WO2019208445A1 - Motor unit and method for manufacturing motor unit - Google Patents

Motor unit and method for manufacturing motor unit Download PDF

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Publication number
WO2019208445A1
WO2019208445A1 PCT/JP2019/016852 JP2019016852W WO2019208445A1 WO 2019208445 A1 WO2019208445 A1 WO 2019208445A1 JP 2019016852 W JP2019016852 W JP 2019016852W WO 2019208445 A1 WO2019208445 A1 WO 2019208445A1
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WO
WIPO (PCT)
Prior art keywords
bus bar
motor unit
opening hole
connecting member
motor
Prior art date
Application number
PCT/JP2019/016852
Other languages
French (fr)
Japanese (ja)
Inventor
陽平 宮田
勇樹 石川
Original Assignee
日本電産株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電産株式会社 filed Critical 日本電産株式会社
Priority to CN201980028059.2A priority Critical patent/CN112075013B/en
Publication of WO2019208445A1 publication Critical patent/WO2019208445A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the present invention relates to a motor unit and a method for manufacturing the motor unit.
  • a motor unit including a motor, an inverter, a bus bar, a housing, and an inverter case.
  • the inverter supplies power to the motor.
  • the bus bar connects the motor and the inverter.
  • the housing houses the motor.
  • the inverter case accommodates the inverter.
  • Patent Document 1 describes an electrical connection structure between an inverter that supplies electric power to a wheel driving motor and a drive train that houses the motor.
  • This type of motor unit has room for improvement in that it prevents foreign matter such as dust from entering the inverter case during assembly.
  • an object of the present invention is to provide a motor unit and a method for manufacturing the motor unit that can prevent foreign matter such as dust from entering the inverter case.
  • One aspect of the motor unit of the present invention includes a motor, an inverter electrically connected to the motor, a portion extending in a first direction, a bus bar connecting the motor and the inverter, and the bus bar
  • the bus bar is passed through the first opening hole of the inverter case in which the inverter is accommodated, and a part of the bus bar is projected from the outer surface of the inverter case.
  • the motor unit and the manufacturing method of the motor unit of one aspect of the present invention it is possible to suppress foreign matters such as dust from entering the inverter case.
  • FIG. 1 is a conceptual diagram of a motor unit according to the first embodiment.
  • FIG. 2 is a schematic side view of the motor unit according to the first embodiment.
  • FIG. 3 is an enlarged cross-sectional view of a portion III in FIG.
  • FIG. 4 is a perspective view showing the vicinity of the first connecting member fixed to the inverter case.
  • FIG. 5 is a perspective view showing the vicinity of the working hole of the housing.
  • FIG. 6 is a perspective view showing the first connecting member and the second connecting member in an assembled state.
  • FIG. 7 is a view of the assembled first and second connecting members as viewed from the first direction.
  • FIG. 8 is a modification of the first embodiment shown in FIG. FIG.
  • FIG. 9 is a cross-sectional view showing a part of the motor unit of the second embodiment, and shows a cross section perpendicular to the motor shaft.
  • FIG. 10 is a perspective view showing the first connecting member and the bus bar of the second embodiment.
  • FIG. 11 is a perspective view showing the first connecting member and the bus bar of the second embodiment.
  • FIG. 12 is a perspective view showing a second connecting member of the second embodiment.
  • FIG. 13 is a cross-sectional view illustrating a bus bar and a wiring member according to a modification of the second embodiment.
  • an XYZ coordinate system is appropriately shown as a three-dimensional orthogonal coordinate system.
  • the Z-axis direction indicates the vertical direction (that is, the vertical direction)
  • the + Z direction is the upper side (opposite to the gravity direction)
  • the ⁇ Z direction is the lower side (gravity direction).
  • the X-axis direction is a direction orthogonal to the Z-axis direction and indicates the front-rear direction of the vehicle on which the motor unit 1 is mounted.
  • the + X direction is the front of the vehicle
  • the ⁇ X direction is the rear of the vehicle.
  • the + X direction may be the rear of the vehicle, and the ⁇ X direction may be the front of the vehicle.
  • the Y-axis direction is a direction orthogonal to both the X-axis direction and the Z-axis direction, and indicates the vehicle width direction (left-right direction).
  • the + Y direction is the left side of the vehicle, and the -Y direction is the right side of the vehicle. is there.
  • the + X direction is the rear of the vehicle
  • the + Y direction may be the right side of the vehicle and the ⁇ Y direction may be the left side of the vehicle. That is, regardless of the X-axis direction, the + Y direction is simply one side of the vehicle left-right direction, and the -Y direction is the other side of the vehicle left-right direction.
  • the direction parallel to the motor axis J2 of the motor 2 (Y-axis direction) is simply referred to as “axial direction”, and the radial direction around the motor axis J2 is simply referred to as “radial direction”.
  • the circumferential direction around the motor shaft J2, that is, the circumference of the motor shaft J2 is simply referred to as “circumferential direction”.
  • the above “parallel direction” includes a substantially parallel direction.
  • FIG. 1 is a conceptual diagram of a motor unit 1 according to the first embodiment.
  • FIG. 2 is a schematic side view of the motor unit 1 as viewed from the side of the vehicle.
  • FIG. 1 is a conceptual diagram to the last, and the arrangement and dimensions of each part are not always the same.
  • the motor unit 1 is mounted on a vehicle using a motor as a power source, such as a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHV), or an electric vehicle (EV), and is used as the power source.
  • a motor such as a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHV), or an electric vehicle (EV), and is used as the power source.
  • HEV hybrid vehicle
  • PHY plug-in hybrid vehicle
  • EV electric vehicle
  • the motor unit 1 of the present embodiment includes a motor (main motor) 2, a gear portion 3, a housing 6, an inverter 7, an inverter case 8, a fixing member 6f,
  • the bus bar 9 the wiring screw portion 18, the lid portion 17, the first connecting member 10, the nut portion 19, the second connecting member 14, the first seal portion 11, the second seal portion 12, and the third A seal portion 13, a first screw member 15, and a second screw member 16 are provided.
  • the motor shaft J2 of the motor 2 extends in a direction orthogonal to a first direction (X-axis direction in the example of the present embodiment) described later.
  • the motor shaft J2 extends in the Y-axis direction.
  • the motor 2 includes a rotor 20 that rotates about the motor shaft J2 and a stator 30 that faces the rotor 20.
  • the stator 30 faces the rotor 20 in the radial direction.
  • a housing space 80 for housing the motor 2 and the gear portion 3 is provided inside the housing 6.
  • the accommodating space 80 is partitioned into a motor chamber 81 that accommodates the motor 2 and a gear chamber 82 that accommodates the gear portion 3.
  • the motor 2 is accommodated in a motor chamber 81 of the housing 6.
  • the motor 2 includes a rotor 20 and a stator 30 that faces the rotor 20 from the outside in the radial direction. That is, the stator 30 of this embodiment is located on the radially outer side of the rotor 20.
  • the motor 2 of the present embodiment is an inner rotor type motor including a stator 30 and a rotor 20 that is rotatably disposed inside the stator 30.
  • the rotor 20 rotates when electric power is supplied from a battery (not shown) to the stator 30 through the inverter 7.
  • the rotor 20 includes a shaft (motor shaft) 21, a rotor core 24, and a rotor magnet (not shown).
  • the rotor 20 (that is, the shaft 21, the rotor core 24, and the rotor magnet) rotates around the motor shaft J2 extending in the horizontal direction.
  • the torque of the rotor 20 is transmitted to the gear unit 3.
  • the shaft 21 extends around a motor shaft J2 extending in the horizontal direction and in the vehicle width direction.
  • the shaft 21 rotates about the motor shaft J2.
  • the shaft 21 is a hollow shaft in which a hollow portion having an inner peripheral surface extending along the motor axis J2 is provided.
  • the shaft 21 extends across the motor chamber 81 and the gear chamber 82 of the housing 6. One end of the shaft 21 protrudes toward the gear chamber 82 side.
  • the first gear 41 is fixed to the end of the shaft 21 protruding into the gear chamber 82.
  • the rotor core 24 is configured by laminating silicon steel plates.
  • the rotor core 24 is a cylindrical body extending along the axial direction.
  • a plurality of rotor magnets are fixed to the rotor core 24.
  • the plurality of rotor magnets are arranged along the circumferential direction with alternating magnetic poles.
  • the stator 30 surrounds the rotor 20 from the outside in the radial direction.
  • the stator 30 includes a stator core 32, a coil 31, an insulator (not shown) interposed between the stator core 32 and the coil 31, and a wiring member 33 that connects the coil 31 and the bus bar 9. That is, the motor 2 has the wiring member 33.
  • the stator 30 is held by the housing 6.
  • the stator core 32 includes an annular yoke and a plurality of magnetic pole teeth extending radially inward from the inner peripheral surface of the yoke.
  • a coil wire (not shown) is wound between the magnetic pole teeth.
  • the coil wire wound around the magnetic pole teeth constitutes the coil 31.
  • the coil wire is connected to the inverter 7 via the wiring member 33 and the bus bar 9.
  • the coil 31 has a coil end 31 a protruding from the axial end surface of the stator core 32.
  • the coil end 31 a protrudes in the axial direction from the end of the rotor core 24 of the rotor 20.
  • the coil end 31 a protrudes on both sides in the axial direction with respect to the rotor core 24.
  • the gear part 3 is accommodated in the gear chamber 82 of the housing 6.
  • the gear unit 3 is connected to the shaft 21 on one axial side of the motor shaft J2.
  • the gear unit 3 includes a speed reduction device 4 and a differential device 5. Torque output from the motor 2 is transmitted to the differential device 5 via the speed reducer 4.
  • the reduction gear 4 is connected to the rotor 20 of the motor 2.
  • the reduction gear 4 has a function of reducing the rotational speed of the motor 2 and increasing the torque output from the motor 2 in accordance with the reduction ratio.
  • the reduction gear 4 transmits the torque output from the motor 2 to the differential device 5.
  • the reduction gear 4 includes a first gear (intermediate drive gear) 41, a second gear (intermediate gear) 42, a third gear (file null drive gear) 43, and an intermediate shaft 45.
  • Torque output from the motor 2 is transmitted to the ring gear (gear) 51 of the differential device 5 via the shaft 21, the first gear 41, the second gear 42, the intermediate shaft 45 and the third gear 43 of the motor 2.
  • the gear ratio of each gear, the number of gears, and the like can be variously changed according to the required reduction ratio.
  • the reduction gear 4 is a parallel shaft gear type reduction gear in which the shaft cores of the respective gears are arranged in parallel to each other.
  • the first gear 41 is provided on the outer peripheral surface of the shaft 21 of the motor 2.
  • the first gear 41 rotates with the shaft 21 around the motor shaft J2.
  • the intermediate shaft 45 extends along an intermediate axis J4 that is parallel to the motor axis J2.
  • the intermediate shaft 45 rotates around the intermediate axis J4.
  • the second gear 42 and the third gear 43 are provided on the outer peripheral surface of the intermediate shaft 45.
  • the second gear 42 and the third gear 43 are connected via an intermediate shaft 45.
  • the second gear 42 and the third gear 43 rotate around the intermediate shaft J4.
  • the second gear 42 meshes with the first gear 41.
  • the third gear 43 meshes with the ring gear 51 of the differential device 5.
  • the third gear 43 is located on the partition wall 61c side (the other side in the axial direction of the motor shaft J2) with respect to the second gear 42.
  • the differential device 5 is connected to the motor 2 via the speed reducer 4.
  • the differential device 5 is a device that transmits torque output from the motor 2 to the wheels of the vehicle.
  • the differential device 5 has a function of transmitting the same torque to the axles 55 of the left and right wheels while absorbing the speed difference between the left and right wheels when the vehicle is turning.
  • the differential 5 includes a ring gear 51, a gear housing (not shown), a pair of pinion gears (not shown), a pinion shaft (not shown), and a pair of side gears (not shown).
  • the ring gear 51 rotates around a differential axis J5 parallel to the motor axis J2. Torque output from the motor 2 is transmitted to the ring gear 51 via the reduction gear 4. That is, the ring gear 51 is connected to the motor 2 via another gear. Of the plurality of gears included in the gear portion 3, the ring gear 51 has the largest outer diameter.
  • the motor shaft J2, the intermediate shaft J4, and the differential shaft J5 extend in parallel to each other along the horizontal direction. As shown in FIG. 2, when viewed from the axial direction of the motor shaft J2, the intermediate shaft J4 and the differential shaft J5 are positioned below the motor shaft J2. Therefore, the speed reduction device 4 and the differential device 5 are located below the motor 2.
  • the vertical position of the intermediate shaft J4 and the vertical position of the differential shaft J5 are substantially the same. However, the present invention is not limited to this, and the vertical position of the differential shaft J5 may be higher than the vertical position of the intermediate shaft J4. In this case, the outer shape of the motor unit 1 in the vertical direction can be suppressed more compactly.
  • the vertical position of the differential shaft J5 may be lower than the vertical position of the intermediate shaft J4.
  • the housing 6 is made of metal such as aluminum alloy. Although not shown, the housing 6 is configured by combining a plurality of members. The housing 6 may be composed of a single member. As shown in FIG. 1, the motor 2 and the gear unit 3 are housed in the housing space 80 provided inside the housing 6. The housing 6 holds the motor 2 and the gear portion 3 in the accommodation space 80. The housing 6 has a partition wall 61c. The housing space 80 of the housing 6 is partitioned into a motor chamber 81 and a gear chamber 82 by a partition wall 61c. The motor 2 is accommodated in the motor chamber 81. The gear chamber 82 accommodates the gear portion 3 (that is, the speed reduction device 4 and the differential device 5).
  • an oil reservoir P in which oil O is accumulated is provided in the lower region in the accommodation space 80.
  • the bottom 81 a of the motor chamber 81 is located above the bottom 82 a of the gear chamber 82.
  • a partition wall opening 68 is provided in the partition wall 61 c that partitions the motor chamber 81 and the gear chamber 82.
  • the partition opening 68 allows the motor chamber 81 and the gear chamber 82 to communicate with each other.
  • the partition opening 68 moves the oil O accumulated in the lower region in the motor chamber 81 to the gear chamber 82.
  • the partition wall 61c is provided with an insertion hole 61f through which the shaft 21 of the motor 2 is inserted in addition to the partition wall opening 68 described above.
  • a part of the differential 5 is immersed in the oil reservoir P.
  • the oil O accumulated in the oil reservoir P is pumped up by the operation of the differential 5 and partly diffuses into the gear chamber 82.
  • the oil O diffused in the gear chamber 82 is supplied to the gears of the reduction gear 4 and the differential device 5 in the gear chamber 82, and spreads the oil O on the gear teeth.
  • the oil O used in the speed reduction device 4 and the differential device 5 is dropped and collected in an oil sump P located below the gear chamber 82.
  • the capacity of the oil reservoir P in the accommodation space 80 is such that a part of the bearing of the differential device 5 is immersed in the oil O when the motor unit 1 is stopped.
  • Oil O circulates in an oil passage (not shown) provided in the housing 6.
  • the oil path is a path of oil O that supplies oil O from the oil reservoir P to the motor 2.
  • the oil path cools the motor 2 by circulating the oil O.
  • Oil O is used for lubricating the speed reducer 4 and the differential 5.
  • the oil O is used for cooling the motor 2.
  • Oil O accumulates in the lower region (namely, oil reservoir P) in the gear chamber 82. Since the oil O functions as a lubricating oil and a cooling oil, it is preferable to use an oil equivalent to a low-viscosity automatic transmission lubricating oil (ATF).
  • ATF automatic transmission lubricating oil
  • the housing 6 has a motor housing portion 6a for housing the motor 2 and a gear housing portion 6b for housing the gear portion 3. That is, the motor 2 is accommodated in the housing 6.
  • the motor housing portion 6a has a substantially cylindrical shape centered on the motor shaft J2.
  • the motor housing portion 6a covers the wall portion 6e facing the inverter case 8, the second opening hole 6c penetrating the wall portion 6e in the X-axis direction, and the top side of the motor housing portion 6a. It has a wall 6h and a work hole 6j that penetrates the top wall 6h in the Z-axis direction. That is, the housing 6 has a second opening hole 6c and a work hole 6j.
  • the second opening 6c is disposed in the wall 6e and opens in the X-axis direction.
  • the second opening hole 6c penetrates the wall 6e in the substantially radial direction.
  • the second opening 6c has an oval shape when viewed from the X-axis direction.
  • the second opening hole 6c has an oval shape extending in the Y-axis direction. That is, when viewed from the X-axis direction, the second opening hole 6c has a larger opening dimension in the Y-axis direction than the opening dimension (inner dimension) in the Z-axis direction.
  • the work hole 6j is disposed in the top wall 6h and opens in the Z-axis direction.
  • the working hole 6j has an oval shape when viewed from the Z-axis direction.
  • the working hole 6j has an oval shape extending in the Y-axis direction. That is, when viewed from the Z-axis direction, the working hole 6j has an opening dimension in the Y-axis direction larger than an opening dimension (inner dimension) in the X-axis direction.
  • a working tool or the like is inserted into the working hole 6j from the outside to the inside of the housing 6.
  • the gear housing portion 6b has an overhang portion 6d that projects in the radial direction with respect to the motor housing portion 6a when viewed from the axial direction.
  • the overhanging portion 6d overhangs the vehicle rear side and the lower side with respect to the motor housing portion 6a.
  • the overhang portion 6 d accommodates a part of the gear portion 3. Specifically, a part of the second gear 42, a part of the third gear 43, and a part of the ring gear 51 are accommodated in the overhanging portion 6d.
  • the overhang portion 6d is provided with an axle passage hole 61e.
  • the axle passage hole 61e penetrates the overhanging portion 6d in the Y-axis direction. As shown in FIG. 1, the axle passage hole 61e is provided in each of a pair of wall portions located at both ends in the Y-axis direction of the overhang portion 6d.
  • the axle 55 is inserted into the axle passage hole 61e.
  • the inverter 7 is electrically connected to the motor 2.
  • the inverter 7 supplies electric power to the motor 2.
  • the inverter 7 is electrically connected to the stator 30 via the bus bar 9 and supplies power to the stator 30.
  • the inverter 7 controls the current supplied to the motor 2.
  • the inverter 7 has a circuit board and a capacitor.
  • the inverter case 8 is a substantially rectangular parallelepiped container.
  • the inverter case 8 is made of a metal such as an aluminum alloy, for example. However, the inverter case 8 may be made of resin.
  • An inverter 7 is accommodated in the inverter case 8.
  • the inverter case 8 is arranged adjacent to the motor housing portion 6a and the motor shaft J2 in the radial direction.
  • the inverter case 8 and the motor housing 6a are adjacent to each other in the horizontal direction.
  • the inverter case 8 has a bottomed cylindrical case body 8d and a case lid 8e that closes the upper opening of the case body 8d.
  • the case main body 8d includes a wall portion 8b facing the motor housing portion 6a, a first opening hole 8c penetrating the wall portion 8b in the X-axis direction, and a case flange portion 8a. That is, the inverter case 8 has the first opening hole 8c.
  • the first opening hole 8c is disposed in the wall portion 8b and opens in the X-axis direction.
  • the first opening hole 8c penetrates the wall portion 8b in the substantially radial direction.
  • the first opening 8c has an oval shape when viewed from the X-axis direction.
  • the first opening hole 8c has an oval shape extending in the Y-axis direction. That is, when viewed from the X-axis direction, the first opening hole 8c has a larger opening dimension in the Y-axis direction than the opening dimension (inner dimension) in the Z-axis direction.
  • the first opening hole 8c is disposed opposite to the second opening hole 6c in a first direction (X-axis direction in the present embodiment) which will be described later. That is, the second opening hole 6c faces the first opening hole 8c in the first direction.
  • the shape of the cross section perpendicular to the X axis of the first opening hole 8c and the shape of the cross section perpendicular to the X axis of the second opening hole 6c are substantially the same.
  • the shape of the first opening hole 8c (the inner peripheral contour) and the shape of the second opening hole 6c substantially coincide with each other.
  • the case flange 8a has a plate shape protruding in the X-axis direction from the upper end of the wall 8b.
  • a plurality of case flanges 8a are provided at the upper end of the wall 8b at equal intervals in the Y-axis direction (see FIG. 5).
  • the plate surface of the case flange 8a faces the Z-axis direction.
  • the case flange 8a is provided with a screw insertion hole 8f that penetrates the case flange 8a in the Z-axis direction.
  • the fixing member 6f is inserted into the screw insertion hole 8f.
  • the fixing member 6f is a screw member such as a bolt.
  • the fixing member 6f extends in the Z-axis direction.
  • the fixing member 6f is tightened into the screw hole 6i of the top wall portion 6h of the motor housing portion 6a.
  • the screw hole 6i is provided in the top wall portion 6h and opens upward.
  • the fixing member 6f is fastened to the housing 6 in the Z-axis direction.
  • a plurality of fixing members 6f are provided.
  • the fixing member 6f is inserted into a plurality of screw insertion holes 8f arranged at equal intervals in the Y-axis direction.
  • the inverter case 8 is fixed to the housing 6 using a fixing member 6f or the like. That is, the fixing member 6 f fixes the inverter case 8 and the housing 6.
  • the inverter case 8 is fixed to the outer peripheral surface facing the radially outer side of the motor housing portion 6a.
  • the bus bar 9 connects the motor 2 and the inverter 7.
  • Bus bar 9 electrically connects stator 30 and inverter 7.
  • the bus bar 9 has a plate shape.
  • a pair of plate surfaces (front surface and back surface) of the bus bar 9 face the Z-axis direction.
  • the bus bar 9 may have a rod shape having a circular cross section, for example.
  • a plurality of bus bars 9 are provided.
  • the plurality of bus bars 9 are arranged at intervals from each other in a direction orthogonal to a first direction (X-axis direction) described later.
  • a plurality (three) of bus bars 9 are provided side by side in a third direction (Y-axis direction) described later.
  • the currents flowing through the three bus bars 9 have different phases.
  • the phase of each current flowing through the three bus bars 9 is the U phase, the V phase, or the W phase.
  • the number of the wiring members 33 of the stator 30 is the same as the number of the bus bars 9, and in this embodiment, there are a plurality. Although not shown, the plurality of wiring members 33 are arranged at intervals from each other in a direction orthogonal to the first direction (X-axis direction). Three wiring members 33 are provided side by side in the Y-axis direction.
  • the wiring member 33 is a wiring member of the motor 2.
  • the wiring member 33 is a wiring member different from the bus bar 9.
  • the wiring member 33 is, for example, a plate-like bus bar. That is, the wiring member 33 has a plate shape.
  • the wiring member 33 is electrically connected to the bus bar 9.
  • the plate surface of the wiring member 33 is in contact with the plate surface of the bus bar 9. That is, the wiring member 33 is in contact with the bus bar 9.
  • the bus bar 9 has a first extending portion 9a, a second extending portion 9b, a through hole 9c, and an end portion 9d.
  • the first extending portion 9 a is a portion that extends in the first direction in the bus bar 9.
  • the second extending portion 9 b is a portion that extends in a direction different from the first direction in the bus bar 9. That is, the bus bar 9 has a portion extending in the first direction and a portion extending in a direction different from the first direction.
  • the “direction different from the first direction” is a direction intersecting the first direction.
  • a pair of first extending portions 9 a are provided apart from each other in the bus bar 9.
  • stretching part 9b is arrange
  • the first direction is the X-axis direction.
  • the first extending portion 9a extends in the X axis direction.
  • the second extending portion 9b extends while inclining in the Z-axis direction as it goes in the X-axis direction.
  • a direction from the first opening hole 8c toward the second opening hole 6c in the first direction is referred to as a first direction one side.
  • one side in the first direction is the + X direction.
  • the direction from the second opening hole 6c toward the first opening hole 8c is referred to as the other side in the first direction.
  • the other side in the first direction is the ⁇ X direction.
  • the up-down direction among the directions orthogonal to the first direction is referred to as a second direction. That is, the second direction is orthogonal to the first direction.
  • the second direction is the Z-axis direction.
  • the left-right direction among the directions orthogonal to the first direction is referred to as a third direction.
  • the third direction is the Y-axis direction.
  • one direction is orthogonal to the other two directions.
  • the bus bar 9 is passed through the first opening 8c.
  • the bus bar 9 extends over the inside and the outside of the inverter case 8 through the first opening hole 8c.
  • the end portion 9d is an end portion on one side of the bus bar 9 in the first direction.
  • An end portion 9d on one side in the first direction of the bus bar 9 protrudes to one side in the first direction from the first opening hole 8c. That is, the end 9 d on the one side in the first direction of the bus bar 9 is located outside the inverter case 8.
  • the end of the bus bar 9 on the other side in the first direction protrudes to the other side in the first direction from the first opening hole 8c. That is, the end of the bus bar 9 on the other side in the first direction is located inside the inverter case 8.
  • the bus bar 9 is supported by a first connecting member 10 described later.
  • the bus bar 9 is fixed to the inverter case 8 via the first connecting member 10.
  • the bus bar 9 is passed through the second opening 6c.
  • the bus bar 9 is passed through the second opening 6c while being fixed to the inverter case 8.
  • the bus bar 9 is inserted into the second opening hole 6c.
  • the bus bar 9 extends through the second opening hole 6c over the inside and the outside of the motor housing portion 6a (housing 6).
  • the end 9d on the one side in the first direction of the bus bar 9 protrudes to the one side in the first direction from the second opening hole 6c. That is, the end 9 d on the one side in the first direction of the bus bar 9 is located inside the housing 6.
  • the end 9d on one side in the first direction of the bus bar 9 and the end 33b on the other side in the first direction of the wiring member 33 overlap each other in the second direction (Z-axis direction).
  • the plate surface facing the + Z direction at the end portion 9d on one side in the first direction of the bus bar 9 and the plate surface facing the ⁇ Z direction at the end portion 33b on the other side in the first direction of the wiring member 33 are mutually in the second direction. Contact. That is, the plate surface of the end portion 9d on one side in the first direction of the bus bar 9 and the plate surface of the end portion 33b on the other side in the first direction of the wiring member 33 are in contact with each other.
  • the direction (+ Z direction) from the end 9d on one side in the first direction of the bus bar 9 toward the end 33b on the other side in the first direction of the wiring member 33 is defined as one side in the second direction.
  • the direction ( ⁇ Z direction) from the end 33b on the other side in the first direction of the wiring member 33 toward the end 9d on the one side in the first direction of the bus bar 9 is referred to as the other side in the second direction.
  • the end of the bus bar 9 on the other side in the first direction protrudes to the other side in the first direction from the second opening 6c. That is, the end of the bus bar 9 on the other side in the first direction is located outside the housing 6.
  • the bus bar 9 is inserted into the housing 6 through a second connecting member 14 described later.
  • the bus bar 9 is inserted into a later-described guide tube portion 14 a of the second connecting member 14.
  • one first extending portion 9a located on one side in the first direction is viewed from the direction orthogonal to the first direction, and the second opening 6c. It is arranged overlapping.
  • the other first extending portion 9a and the second extending portion 9b located on the other side in the first direction are the first opening holes 8c as viewed from the direction orthogonal to the first direction. It is arranged overlapping.
  • the through hole 9 c is formed in the bus bar 9.
  • the through hole 9 c penetrates the bus bar 9 in the Z-axis direction and opens on a pair of plate surfaces of the bus bar 9.
  • the through hole 9 c is disposed at the end 9 d on the one side in the first direction of the bus bar 9.
  • the through-hole 9c is provided in one first extending portion 9a located on one side in the first direction among the pair of first extending portions 9a.
  • the through hole 9 c When viewed from the Z-axis direction, the through hole 9 c is disposed so as to overlap the through hole 33 a of the wiring member 33.
  • the wiring screw portion 18 is passed through the through hole 9c and the through hole 33a.
  • the wiring screw portion 18 is a screw member extending in the Z-axis direction.
  • the wiring screw portion 18 is fastened to a nut portion 19 described later.
  • the bus bar 9 and the wiring member 33 are sandwiched between the wiring screw portion 18 and the nut portion 19 from the Z-axis direction, and are fixed to each other. That is, the wiring screw portion 18 connects the bus bar 9 and the wiring member 33 of the motor 2.
  • the screw shaft SA of the wiring screw portion 18 extends in a direction orthogonal to the first direction. Specifically, the screw shaft SA extends in the second direction (Z-axis direction). According to this embodiment, the bus bar 9 and the wiring member 33 of the motor 2 can be connected without complicating the structure of the bus bar 9.
  • the screw shaft SA of the wiring screw portion 18 may extend along the center axis HA of a work hole 6j described later. In this case, at the end 9d on one side in the first direction of the bus bar 9, the pair of plate surfaces face the central axis HA direction, and the through hole 9c opens in the central axis HA direction. In this case, the wiring screw portion 18 can be stably tightened through the work hole 6j with a work tool or the like.
  • the fixing member 6f and the bus bar 9 are arranged to overlap each other.
  • the fixing member 6f and the bus bar 9 are arranged to overlap each other.
  • one first extending portion 9a located on one side in the first direction overlaps with the fixing member 6f.
  • the working hole 6 j of the housing 6 opens toward the bus bar 9.
  • the working hole 6j opens toward one first extending portion 9a located on one side in the first direction of the pair of first extending portions 9a.
  • the working hole 6j opens in the housing 6 toward the through hole 9c.
  • the wiring screw portion 18 is passed from the working hole portion 6j to the through hole 9c of the bus bar 9 and is tightened to the nut portion 19, whereby the bus bar is formed inside the housing 6. 9 and the wiring member 33 can be connected.
  • the working hole 6j extends incline toward the first direction as it goes in a direction orthogonal to the first direction (second direction in the present embodiment).
  • the working hole 6j extends inclining toward the other side in the first direction as it approaches the bus bar 9 in a direction orthogonal to the first direction (in the present embodiment, as it goes downward). That is, the central axis HA of the working hole 6j extends in an inclined manner toward the first direction as it goes in the direction orthogonal to the first direction. As the center axis HA approaches the bus bar 9 in the direction orthogonal to the first direction, the central axis HA extends while inclining toward the other side in the first direction.
  • the inverter case 8 and the housing 6 can be stably fixed by the plurality of fixing members 6f arranged at equal intervals in the third direction (Y-axis direction). Then, a work tool or the like is inserted into the work hole 6 j so that the bus bar 9 and the wiring member 33 of the motor 2 can be connected in the housing 6. That is, the working hole 6j is inclined toward the second direction and extends toward the bus bar 9, so that the fixing state (fixing strength) of the inverter case 8 and the housing 6 by the fixing member 6f is hindered. The bus bar 9 and the wiring member 33 can be connected.
  • the fixing member 6f may not be disposed at a position overlapping the bus bar 9. That is, if priority is given to the arrangement of the working hole 6j, the fixing member 6f cannot be arranged at a desired position, and the fixing state between the inverter case 8 and the housing 6 may become unstable (fixing strength cannot be secured). . In addition, if priority is given to the arrangement of the fixing member 6f to secure the fixing strength between the inverter case 8 and the housing 6, the working hole 6j and the bus bar 9 do not overlap the fixing member 6f when viewed from the second direction. Must be moved to position.
  • the outer shape of the motor unit 1 increases in the third direction (the axial direction of the motor shaft J2), and the degree of freedom of arrangement of members decreases.
  • the fixing member 6f is arranged at a desired position to stabilize the fixing state between the inverter case 8 and the housing 6 (while ensuring the fixing strength), The outer shape can be kept compact, and the degree of freedom of arrangement of members can be secured.
  • the bus bar 9 can be connected to the wiring member 33 of the motor 2 through the working hole 6j.
  • the work hole 6j is an inclined hole located on the other side in the first direction as it approaches the bus bar 9 along the second direction, the work hole 6j is disposed in the housing 6. It's easy to do.
  • the lid portion 17 has a plate shape. When viewed from the second direction (Z-axis direction), the lid portion 17 has an oval shape extending in the third direction (Y-axis direction). When viewed from the second direction, the lid portion 17 has an oval shape having the third direction as a major axis and the first direction (X-axis direction) as a minor axis.
  • the lid portion 17 closes the work hole 6j.
  • the lid portion 17 is provided on the top wall portion 6h and closes the upper opening of the working hole portion 6j. According to the present embodiment, after the bus bar 9 is wired through the work hole 6j, the work hole 6j can be closed by the lid 17. Through the work hole 6j, the lid 17 can prevent liquid such as water and foreign matter from entering the inside of the housing 6 from inside and leakage of the oil O from the inside of the housing 6 to the outside.
  • the first connecting member 10 is made of resin.
  • the first connecting member 10 is made of, for example, a PPS resin containing an elastomer component.
  • the first connecting member 10 is constituted by a single member.
  • the 1st connection member 10 consists of material etc. which have the thermal expansion coefficient (thermal expansion coefficient) substantially the same as the material of the bus bar 9, for example.
  • the first connecting member 10 is attached to the inverter case 8 and closes the first opening hole 8c.
  • the first connecting member 10 is attached to the wall portion 8b of the case body 8d and closes the opening on the one side in the first direction of the first opening hole 8c.
  • the first connecting member 10 contacts the inverter case 8 in the first direction.
  • the first connecting member 10 is fixed to the inverter case 8 by a plurality of first screw members 15 described later. That is, the first connecting member 10 is fixed to the inverter case 8 and closes the first opening hole 8c.
  • the first connecting member 10 is located between the inverter case 8 and the housing 6 in the first direction, and is provided in the first opening hole 8c.
  • the first connecting member 10 supports the bus bar 9.
  • the first connecting member 10 is resin-insert molded with a part of the bus bar 9.
  • the bus bar 9 is fixed to the first connecting member 10.
  • a plurality of bus bars 9 are provided at intervals in a direction orthogonal to the first direction (a third direction in the present embodiment).
  • the bus bar 9 is inserted into the second opening hole 6 c of the housing 6 and connected to the stator 30 of the motor 2.
  • the motor unit 1 is manufactured by passing the bus bar 9 through the first opening 8 c of the inverter case 8 in which the inverter 7 is accommodated and projecting a part of the bus bar 9 from the outer surface of the inverter case 8.
  • the first connecting member 10 that supports the bus bar 9 is fixed to the inverter case 8, and the first opening 8 c is closed by the first connecting member 10.
  • a part of the bus bar 9 (a part of the bus bar 9 located on one side in the first direction) is separated from the wall 8b of the case body 8d in the first direction. Projected to one side.
  • a part of the bus bar 9 is inserted into the second opening hole 6c toward one side in the first direction.
  • the bus bar 9 and the wiring member 33 of the stator 30 are connected using a work tool or the like inserted from the work hole 6j. That is, the bus bar 9 and the wiring member 33 are connected to each other by the wiring screw portion 18 and the nut portion 19 through the working hole 6 j that opens in the housing 6.
  • the inverter case 8 it is not necessary to open the inverter case 8 when connecting the bus bar 9 and the wiring member 33 of the motor 2 when the motor unit 1 is assembled. That is, it is not necessary to remove the case lid 8e from the case body 8d. Therefore, by fixing the bus bar 9 to the inverter case 8 in advance in a dust-free environment such as a clean room, foreign matter such as dust can be prevented from entering the inverter case 8, and the performance of the inverter 7 can be maintained stably. Is done.
  • the first connecting member 10 has a length in the second direction smaller than a length in the third direction. That is, the first connecting member 10 extends in the third direction.
  • the plurality of bus bars 9 are arranged in the third direction, and accordingly, the first connecting member 10 has an outer shape in the third direction larger than the outer shape in the second direction. For this reason, it is suppressed that the external shape (especially external shape of a 2nd direction) of the 1st connection member 10 becomes larger than necessary.
  • the material cost of the first connecting member 10 can be reduced, and the fixing strength to the inverter case 8 can be easily secured.
  • the first connecting member 10 includes a partition wall portion 10d, an attachment tube portion 10a, an insertion portion 10b, a bus bar fixing portion 10c, a first groove portion 10e, a first flange portion 10h, a nut holding portion 10f, and an insulating member. 10 g of wall parts.
  • the partition wall 10d has a plate shape.
  • the partition wall 10d has a plate shape that extends in a direction perpendicular to the first direction. When viewed from the first direction, the partition wall 10d has an oval shape extending in the third direction. When viewed from the first direction, the partition wall 10d has an oval shape with the third direction as the major axis and the second direction as the minor axis.
  • the outer peripheral part of the partition wall part 10d is opposed from one side in the first direction over the entire periphery of the wall part 8b around the first opening hole 8c.
  • “around the hole of the first opening hole 8c” is an annular portion that is disposed adjacent to the inner periphery of the first opening hole 8c in the wall portion 8b and extends along the inner periphery of the first opening hole 8c. is there.
  • the partition wall portion 10d closes the first opening hole 8c.
  • the partition wall portion 10d closes the opening on the one side in the first direction of the first opening hole 8c. When viewed from the first direction, the partition wall portion 10d overlaps the entire first opening hole 8c and covers the entire first opening hole 8c.
  • the partition wall portion 10d blocks communication between the first opening hole 8c and the second opening hole 6c.
  • the mounting cylinder portion 10a has a cylindrical shape extending from the partition wall portion 10d toward the other side in the first direction. As viewed from the first direction, the mounting cylinder portion 10a has an oval shape extending in the third direction. When viewed from the first direction, the mounting tube portion 10a has an oval shape having the third direction as a major axis and the second direction as a minor axis.
  • the attachment cylinder portion 10a is inserted into the first opening hole 8c. In the present embodiment, the mounting cylinder portion 10a is fitted into the first opening hole 8c. According to this embodiment, the attachment cylinder part 10a fits in the 1st opening hole 8c, and the 1st connection member 10 and the inverter case 8 are positioned and assembled.
  • the bus bar 9 is disposed inside the attachment cylinder part 10a and away from the attachment cylinder part 10a. The insulation between the 1st opening hole 8c and the bus-bar 9 is ensured by the attachment cylinder part 10a.
  • the mounting cylinder part 10a has a plurality of first crush ribs 10n provided on the outer peripheral surface of the mounting cylinder part 10a and extending in the first direction.
  • the plurality of first crush ribs 10n are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the mounting cylinder portion 10a.
  • the first crush rib 10n has a portion facing the one side in the second direction (+ Z direction), a portion facing the other side in the second direction ( ⁇ Z direction), and the axial direction on the outer peripheral surface of the mounting cylinder portion 10a. They are arranged on the part facing the one side (+ Y direction) and the part facing the other side ( ⁇ Y direction) in the axial direction (see FIG. 10).
  • the first crush rib 10n is crushed between the outer peripheral surface of the mounting cylinder portion 10a and the inner peripheral surface of the first opening hole 8c.
  • the first crush rib 10n is crushed in a direction orthogonal to the first direction between the outer peripheral surface of the mounting cylinder portion 10a and the inner peripheral surface of the first opening hole 8c, but the mounting cylinder portion 10a and the first opening hole Relative movement in the first direction with respect to 8c is allowed.
  • the first crush rib 10n can be plastically deformed beyond, for example, an elastic deformation region.
  • the attachment cylinder part 10a is accurately positioned with respect to the first opening hole 8c by the plurality of first crush ribs 10n. That is, the attachment cylinder portion 10a is attached to the first opening hole 8c in a centered posture.
  • the insertion portion 10b has a cylindrical shape extending from the partition wall portion 10d toward one side in the first direction. When viewed from the first direction, the insertion portion 10b has an oval shape extending in the third direction. When viewed from the first direction, the insertion portion 10b has an oval shape with the third direction as the major axis and the second direction as the minor axis.
  • the insertion portion 10b is inserted into a guide tube portion 14a described later of the second connecting member 14.
  • the insertion portion 10b has an outer peripheral tapered surface 10i, an inner peripheral tapered surface 10j, and a third groove portion 10k.
  • illustration of the 3rd groove part 10k is abbreviate
  • the outer peripheral tapered surface 10i is disposed at the end on the one side in the first direction on the outer peripheral surface of the insertion portion 10b.
  • the outer peripheral tapered surface 10i is an inclined surface located toward the inner side of the second opening hole 6c when viewed from the first direction as it goes to the one side in the first direction. That is, as shown in FIG. 3, in a cross-sectional view along the first direction, the outer peripheral tapered surface 10 i extends in an inclined manner toward the inner peripheral surface of the insertion portion 10 b as it goes toward one side in the first direction.
  • the outer peripheral tapered surface 10i is provided at the end portion on the one side in the first direction of the insertion portion 10b, it is easy to insert the insertion portion 10b inside the guide tube portion 14a. Therefore, the first connecting member 10 attached to the inverter case 8 and the second connecting member 14 attached to the housing 6 can be easily assembled.
  • the inner peripheral taper surface 10j is disposed at the end on the one side in the first direction on the inner peripheral surface of the insertion portion 10b. In a cross-sectional view along the first direction, the inner peripheral tapered surface 10j extends while being inclined toward the outer peripheral surface of the insertion portion 10b as it goes toward one side in the first direction. According to the present embodiment, since the inner peripheral tapered surface 10j is provided at the end portion on the one side in the first direction of the insertion portion 10b, the insertion portion 10b is disposed outside the inner cylinder portion 14c described later of the second connecting member 14. Easy to fit. Therefore, the first connecting member 10 attached to the inverter case 8 and the second connecting member 14 attached to the housing 6 can be easily assembled.
  • 3rd groove part 10k is arrange
  • the 3rd groove part 10k is arrange
  • the third groove portion 10k has an annular shape extending along the outer peripheral surface of the insertion portion 10b when viewed from the first direction. When viewed from the first direction, the third groove portion 10k has an oval shape extending along the outer peripheral surface of the insertion portion 10b.
  • the number of bus bar fixing portions 10c is the same as the number of bus bars 9, and a plurality (three) are provided in this embodiment.
  • the three bus bar fixing portions 10c are arranged side by side in the third direction.
  • the bus bar fixing portion 10c has a portion extending from the partition wall portion 10d toward the one side in the first direction.
  • the bus bar fixing portion 10c has a portion extending from the partition wall portion 10d toward the other side in the first direction.
  • the partition wall portion 10d holds the bus bar fixing portion 10c.
  • the bus bar fixing portion 10c is fixed to the partition wall portion 10d.
  • the partition wall portion 10d blocks communication between the first opening hole 8c and the second opening hole 6c that have passed through the insertion portion 10b.
  • a part of the bus bar 9 is embedded and fixed in the bus bar fixing portion 10c.
  • a part of the bus bar 9 is embedded and fixed in the bus bar fixing portion 10c by insert molding or the like using the bus bar 9 as an insert member.
  • the bus bar 9 and the bus bar fixing portion 10c are in close contact with each other, and the sealing performance between the bus bar 9 and the bus bar fixing portion 10c is ensured.
  • the bus bar 9 is stably supported by the bus bar fixing portion 10c.
  • the partition wall 10d prevents the oil O or the like in the housing 6 from entering the inverter case 8 through the second opening hole 6c and the first opening hole 8c.
  • the first opening hole 8c can be sealed with a simple structure.
  • the bus bar fixing portion 10c is embedded with each of the second extending portion 9b of the bus bar 9 and each of the pair of first extending portions 9a connected to (adjacent to) the second extending portion 9b. That is, the bus bar 9 has a portion extending in the first direction (first extending portion 9a) and a portion extending in a direction different from the first direction (second extending portion 9b) embedded and fixed in the bus bar fixing portion 10c.
  • the fixing strength between the bus bar 9 and the bus bar fixing portion 10c is increased, and the sealing property between the bus bar 9 and the bus bar fixing portion 10c is stably secured.
  • 1st groove part 10e is provided in the surface facing the inverter case 8 of the 1st connection member 10. As shown in FIG. When viewed from the first direction, the first groove portion 10e has an annular shape surrounding the first opening hole 8c. The first groove 10e has an oval shape that is long in the third direction when viewed from the first direction.
  • the 1st groove part 10e is arrange
  • the first groove portion 10e is disposed on a surface facing the other side in the first direction in the outer peripheral portion of the partition wall portion 10d, and opens to the other side in the first direction.
  • the first flange portion 10h is located outside the first groove portion 10e when viewed from the first direction.
  • the first flange portion 10h is connected to the outer peripheral portion of the partition wall portion 10d.
  • the first flange portion 10h is plate-shaped.
  • the first flange portion 10h extends in a direction perpendicular to the first direction. Other configurations of the first flange portion 10h will be described later separately.
  • the nut holding part 10f extends along one first extending part 9a located on one side in the first direction among the pair of first extending parts 9a of the bus bar 9.
  • the nut holding part 10 f holds the nut part 19.
  • the nut portion 19 is inserted into the nut holding portion 10f toward the other side in the first direction.
  • the nut portion 19 is disposed to face the through hole 9c.
  • the nut part 19 is arrange
  • the bus bar 9 and the wiring member 33 of the motor 2 can be connected by passing the wiring screw portion 18 through the through hole 9c of the bus bar 9 and tightening the nut screw 19 held by the nut holding portion 10f. .
  • the bus bar 9 and the wiring member 33 can be connected with a simple structure.
  • the degree of freedom for routing the wiring in the housing 6 can be increased.
  • the insulating wall 10g extends from the partition wall 10d toward the one side in the first direction.
  • the insulating wall portion 10g has a plate shape that extends in a direction perpendicular to the third direction.
  • the insulating wall 10g is disposed between the adjacent bus bars 9 and extends in the first direction.
  • a plurality (two) of insulating walls 10g are provided side by side in the third direction.
  • adjacent bus bar fixing portions 10c are connected in the third direction via the insulating wall portion 10g on one side in the first direction of the partition wall portion 10d. According to this embodiment, the insulation between the adjacent bus bars 9 is ensured by the insulating wall 10g.
  • the second connecting member 14 is made of resin.
  • the second connecting member 14 is made of, for example, a PPS resin containing an elastomer component.
  • the 2nd connection member 14 is comprised by the single member.
  • the second connecting member 14 is made of the same material as the first connecting member 10.
  • the second connecting member 14 is attached to the housing 6.
  • the 2nd connection member 14 is attached to the wall part 6e of the motor accommodating part 6a.
  • the second connecting member 14 contacts the housing 6 in the first direction.
  • the second connecting member 14 is fixed to the housing 6 by a plurality of second screw members 16 described later. That is, the second connecting member 14 is fixed to the housing 6.
  • the second connecting member 14 is located between the housing 6 and the inverter case 8 in the first direction, and is provided in the second opening hole 6c.
  • the second connecting member 14 faces the first connecting member 10 in the first direction.
  • the bus bar 9 is passed through the second connecting member 14.
  • the bus bar 9 is inserted into the second connecting member 14 toward one side in the first direction.
  • the end 9d on one side in the first direction of the bus bar 9 protrudes from the second connecting member 14 to one side in the first direction.
  • the second connecting member 14 When viewed from the first direction, the second connecting member 14 has a length in the second direction smaller than a length in the third direction. That is, the second connecting member 14 extends in the third direction.
  • the plurality of bus bars 9 are arranged in the third direction, and accordingly, the outer shape in the third direction of the second connecting member 14 is made larger than the outer shape in the second direction. For this reason, it is suppressed that the external shape (especially external shape of a 2nd direction) of the 2nd connection member 14 becomes large more than necessary.
  • the material cost of the second connecting member 14 can be reduced, and the fixing strength to the housing 6 can be easily secured.
  • the second connecting member 14 includes a mounting wall portion 14b, a guide tube portion 14a, an inner tube portion 14c, a connecting wall portion 14d, a second groove portion 14e, and a second flange portion 14f.
  • the mounting wall portion 14b is plate-shaped.
  • the mounting wall portion 14b has a plate shape that extends in a direction perpendicular to the first direction.
  • the mounting wall portion 14b has an annular shape extending along the inner periphery of the second opening hole 6c.
  • the mounting wall portion 14b When viewed from the first direction, has an oval shape extending in the third direction.
  • the mounting wall portion 14b When viewed from the first direction, has an oval shape with the third direction as the major axis and the second direction as the minor axis. Parts other than the inner peripheral part of the mounting wall part 14b are opposed from the other side in the first direction over the entire circumference of the wall part 6e around the second opening hole 6c.
  • “around the hole of the second opening hole 6c” is an annular portion that is disposed adjacent to the inner periphery of the second opening hole 6c in the wall portion 6e and extends along the inner periphery of the second opening hole 6c. is there.
  • the guide tube portion 14a has a tubular shape extending from the mounting wall portion 14b toward the one side in the first direction.
  • the guide tube portion 14a extends from the inner peripheral portion of the mounting wall portion 14b to one side in the first direction.
  • the guide tube portion 14a has an oval shape extending in the third direction.
  • the guide tube portion 14a has an oval shape with the third direction as the long axis and the second direction as the short axis.
  • the guide cylinder portion 14a is inserted into the second opening hole 6c. In the present embodiment, the guide tube portion 14a is fitted into the second opening hole 6c.
  • the second connecting member 14 and the housing 6 are positioned and assembled by fitting the guide tube portion 14a into the second opening hole 6c. Thereby, the alignment at the time of combining the 2nd connection member 14 and the 1st connection member 10 can be performed stably, and an assembly becomes easy.
  • the bus bar 9 is disposed inside the guide tube portion 14a and away from the guide tube portion 14a. The guide tube portion 14a ensures insulation between the second opening hole 6c and the bus bar 9.
  • the guide tube portion 14a has a plurality of second crush ribs 14k provided on the outer peripheral surface of the guide tube portion 14a and extending in the first direction.
  • the plurality of second crush ribs 14k are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the guide tube portion 14a.
  • the second crush rib 14k is a portion of the outer peripheral surface of the guide tube portion 14a facing the one side in the second direction (+ Z direction), a portion facing the other side in the second direction ( ⁇ Z direction), and the axial direction. Arranged in a portion facing one side (+ Y direction) and a portion facing the other side in the axial direction ( ⁇ Y direction).
  • the second crush rib 14k is crushed between the outer peripheral surface of the guide tube portion 14a and the inner peripheral surface of the second opening hole 6c.
  • the second crush rib 14k is crushed in a direction orthogonal to the first direction between the outer peripheral surface of the guide tube portion 14a and the inner peripheral surface of the second opening hole 6c, but the guide tube portion 14a and the second opening hole
  • the relative movement in the first direction with respect to 6c is allowed.
  • the second crush rib 14k can be plastically deformed beyond, for example, an elastic deformation region.
  • the guide cylinder portion 14a is accurately positioned with respect to the second opening hole 6c by the plurality of second crush ribs 14k. That is, the guide cylinder portion 14a is attached to the second opening hole 6c in a centered posture.
  • the guide tube portion 14a has a receiving tapered surface 14h.
  • the receiving taper surface 14h is disposed in an opening located at the other end in the first direction on the inner peripheral surface of the guide tube portion 14a.
  • the receiving taper surface 14h is an inclined surface positioned toward the outside of the second opening hole 6c when viewed from the first direction as it goes toward the other side in the first direction. That is, as shown in FIG. 3, in a cross-sectional view along the first direction, the receiving tapered surface 14 h extends while being inclined toward the outer peripheral portion of the mounting wall portion 14 b as it goes toward the other side in the first direction.
  • the receiving tapered surface 14h is provided in the opening on the other side in the first direction of the guide tube portion 14a, it is easy to insert the insertion portion 10b inside the guide tube portion 14a. Therefore, the first connecting member 10 attached to the inverter case 8 and the second connecting member 14 attached to the housing 6 can be easily assembled.
  • the inner cylinder part 14c is arranged inside the guide cylinder part 14a. When viewed from the first direction, the inner cylinder portion 14c is disposed away from the guide cylinder portion 14a inward. As viewed from the first direction, the shape of the inner cylinder portion 14c and the shape of the guide cylinder portion 14a are substantially similar to each other. When viewed from the first direction, the bus bar 9 is disposed on the inner side of the inner cylinder portion 14c and away from the inner cylinder portion 14c. The insulation between the 2nd opening hole 6c and the bus-bar 9 is ensured by the inner cylinder part 14c.
  • the inner cylinder portion 14c has a guide taper surface 14g.
  • 14 g of guide taper surfaces are arrange
  • the guide taper surface 14g is an inclined surface located toward the inside of the second opening hole 6c when viewed from the first direction as it goes toward the other side in the first direction. That is, in the cross-sectional view along the first direction, the guide taper surface 14g is inclined and extended toward the inner peripheral surface of the inner cylinder portion 14c as it goes to the other side in the first direction.
  • the guide taper surface 14g is provided at the end portion on the other side in the first direction of the inner cylinder portion 14c, the insertion portion 10b can be easily fitted to the outside of the inner cylinder portion 14c.
  • the end portion on the one side in the first direction of the inner tube portion 14c and the end portion on the one side in the first direction of the guide tube portion 14a are connected via a connecting wall portion 14d.
  • the connecting wall portion 14d has a plate shape.
  • the connecting wall portion 14d has a plate shape extending in a direction perpendicular to the first direction.
  • the connecting wall portion 14d has an annular shape that extends along the inner periphery of the second opening hole 6c.
  • the inner cylinder part 14c is provided inside the insertion part 10b, and the connecting wall part 14d is provided on one side in the first direction of the insertion part 10b, so that the insertion part 10b and the guide cylinder part 14a
  • the oil O in the housing 6 is difficult to reach. Therefore, it is possible to suppress the oil O and the like from leaking from the inside of the housing 6 to the outside through between the insertion portion 10b and the guide tube portion 14a.
  • sticker part 13 mentioned later can be suppressed, and the component lifetime of the 3rd seal
  • the second groove portion 14e is provided on the surface of the second connecting member 14 facing the housing 6. When viewed from the first direction, the second groove portion 14e has an annular shape surrounding the second opening hole 6c. The second groove portion 14e has an oval shape that is long in the third direction when viewed from the first direction. The second groove portion 14e is disposed on the mounting wall portion 14b. The second groove portion 14e has an annular shape extending along the attachment wall portion 14b. The 2nd groove part 14e is arrange
  • the second flange portion 14f is located outside the second groove portion 14e when viewed from the first direction.
  • the second flange portion 14f is connected to the outer peripheral portion of the mounting wall portion 14b.
  • the second flange portion 14f has a plate shape.
  • the second flange portion 14f extends in a direction perpendicular to the first direction. Other configurations of the second flange portion 14f will be described later.
  • the first seal portion 11 is disposed between the inverter case 8 and the first connecting member 10 in the first direction, and contacts the inverter case 8 and the first connecting member 10.
  • sticker part 11 is arrange
  • the first seal part 11 is elastically deformable. According to this embodiment, the space between the inverter case 8 and the first connecting member 10 is sealed by the first seal portion 11. Since the first seal portion 11 is sandwiched between the inverter case 8 and the first connecting member 10 in the first direction, the pressing force in the first direction by the first screw member 15 is evenly distributed over the entire first seal portion 11.
  • the sealing function by the 1st seal part 11 is stabilized.
  • the first seal portion 11 can be prevented from being twisted or damaged.
  • the first seal portion 11 can ensure the sealing performance of the first opening hole 8c.
  • the first seal portion 11 has an annular shape surrounding the first opening hole 8c when viewed from the first direction. When viewed from the first direction, the first seal portion 11 has an oval shape that is long in the third direction.
  • the first seal portion 11 is an O-ring or the like provided as a separate member from the first connecting member 10. According to the present embodiment, the first seal portion 11 can stably prevent liquids such as water and oil and foreign matter from entering the interior of the inverter case 8 through the first opening 8c. A plurality of first screw members 15 to be described later maintain good sealing performance of the first seal portion 11.
  • the first seal part 11 is arranged in the first groove part 10e. According to the present embodiment, it is easy to attach the first seal portion 11 to the first connecting member 10, and the displacement of the first seal portion 11 during and after the assembly of the motor unit 1 is suppressed.
  • the first groove portion 10e ensures the sealing performance of the first seal portion 11 stably.
  • the second seal portion 12 is disposed between the housing 6 and the second connecting member 14 in the first direction, and contacts the housing 6 and the second connecting member 14.
  • the second seal portion 12 is disposed between a surface facing the other side in the first direction of the housing 6 and a surface facing the one side in the first direction of the second connecting member 14 facing the surface.
  • the second seal portion 12 can be elastically deformed. According to the present embodiment, the space between the housing 6 and the second connecting member 14 is sealed by the second seal portion 12. Since the second seal portion 12 is sandwiched between the housing 6 and the second connecting member 14 in the first direction, the pressing force in the first direction by the second screw member 16 acts equally on the entire second seal portion 12. Can be made. Therefore, the sealing function by the second seal portion 12 is stabilized.
  • the second seal portion 12 can ensure the sealing performance of the second opening hole 6c.
  • the second seal part 12 has an annular shape surrounding the second opening hole 6c when viewed from the first direction.
  • the second seal portion 12 When viewed from the first direction, the second seal portion 12 has an oval shape that is long in the third direction.
  • the second seal portion 12 is an O-ring or the like provided as a separate member from the second connecting member 14. According to the present embodiment, liquid such as water and foreign matter enter the inside of the housing 6 from the outside through the second opening 6c, and oil O etc. leaks from the inside of the housing 6 to the outside. It is stably suppressed by the seal portion 12.
  • the sealing performance of the second seal portion 12 is favorably maintained by a plurality of second screw members 16 described later.
  • the second seal portion 12 is disposed in the second groove portion 14e. According to this embodiment, it is easy to attach the second seal portion 12 to the second connecting member 14, and the displacement of the second seal portion 12 during and after the assembly of the motor unit 1 is suppressed. By the second groove portion 14e, the sealing performance of the second seal portion 12 is stably secured.
  • the second seal portion 12 and the first seal portion 11 are disposed so as to overlap each other when viewed from the first direction. That is, when viewed from the first direction, the second groove portion 14e and the first groove portion 10e are disposed so as to overlap each other.
  • the third seal portion 13 seals between the first connecting member 10 and the second connecting member 14.
  • the third seal portion 13 is disposed between the inner peripheral surface of the guide cylinder portion 14a and the outer peripheral surface of the insertion portion 10b facing the inner peripheral surface.
  • the third seal portion 13 contacts the inner peripheral surface of the guide tube portion 14a and the outer peripheral surface of the insertion portion 10b. That is, the third seal portion 13 seals between the inner peripheral surface of the guide tube portion 14a and the outer peripheral surface of the insertion portion 10b.
  • the third seal portion 13 is elastically deformable. According to this embodiment, the space between the first connecting member 10 and the second connecting member 14 is sealed by the third seal portion 13.
  • the insertion portion 10b of the first connection member 10 is inserted into the guide tube portion 14a of the second connection member 14, so that the third seal portion 13 is inserted into the insertion portion 10b.
  • the outer peripheral surface and the inner peripheral surface of the guide tube portion 14a are brought into contact with each other, and the space between these peripheral surfaces is sealed. That is, the third seal portion 13 seals between the insertion portion 10b and the guide tube portion 14a in the radial direction assuming that the portion extending in the first direction of the bus bar 9 is the central axis.
  • the third seal portion 13 it is possible to prevent liquids such as water and foreign matter from entering the inside of the housing 6 and oil O and the like from leaking from the inside of the housing 6 to the outside.
  • the sealing property of the second opening hole 6 c is ensured.
  • the third seal portion 13 has an annular shape extending along the outer peripheral surface of the insertion portion 10b when viewed from the first direction.
  • the third seal portion 13 has an oval shape extending along the outer peripheral surface of the insertion portion 10b when viewed from the first direction.
  • the third seal portion 13 is an O-ring provided as a separate member from the insertion portion 10b.
  • a liquid such as water enters the housing 6 from the outside to the inside through the second opening 6 c between the insertion portion 10 b of the first connecting member 10 and the guide tube portion 14 a of the second connecting member 14.
  • the third seal portion 13 can stably suppress the entry of foreign matter and the like, and the leakage of oil O and the like from the inside of the housing 6 to the outside.
  • the third seal portion 13 is disposed in the third groove portion 10k. According to this embodiment, attachment of the 3rd seal part 13 to insertion part 10b is easy, and position shift of the 3rd seal part 13 at the time of assembly of motor unit 1 and after assembly is controlled. By the third groove portion 10k, the sealing performance of the third seal portion 13 is stably secured.
  • an outer peripheral tapered surface 10i is provided at the distal end portion on one side in the first direction of the outer peripheral surface of the insertion portion 10b, and the insertion portion 10b is inserted into the guide tube portion 14a. Easy to do.
  • a receiving taper surface 14h is provided in the opening on the other side in the first direction of the inner peripheral surface of the guide tube portion 14a, so that the insertion portion 10b can be easily inserted into the guide tube portion 14a.
  • the same effects as described above can be obtained with respect to the inner peripheral tapered surface 10j and the guide tapered surface 14g. Therefore, the first connecting member 10 and the second connecting member 14 can be easily aligned (particularly, positioning in a direction perpendicular to the first direction), and the first connecting member 10 and the second connecting member 14 Easy to assemble.
  • first connecting member 10 and the second connecting member 14 are made of resin, damage to the third seal portion 13 and the like can be suppressed. That is, it is possible to prevent the third seal portion 13 from being twisted, damaged, or the like by providing a hard edge or the like that the third seal portion 13 is caught on the outer peripheral surface of the insertion portion 10b and the inner peripheral surface of the guide tube portion 14a. Can be suppressed. Therefore, the sealing function of the third seal portion 13 is stabilized.
  • the first flange portion 10h is located outside the first seal portion 11 when viewed from the first direction. As shown in FIGS. 6 and 7, the first flange portion 10h includes a first screw hole portion 101 and a first pressing portion 10m. A plurality of first screw hole portions 10l penetrates the first flange portion 10h in the first direction, and are arranged around the hole of the first opening hole 8c at intervals along the inner periphery of the first opening hole 8c. The first screw member 15 is passed through the first screw hole portion 101. The central axis of the first screw hole portion 101 and the screw axis of the first screw member 15 substantially coincide with each other. A metal cylindrical member may be fitted to the inner peripheral portion of the first screw hole portion 101.
  • the first pressing portion 10m has a plate shape.
  • the first pressing portion 10m extends in a direction perpendicular to the first direction.
  • the first pressing portion 10m is located outside the first seal portion 11 between the pair of first screw hole portions 101 adjacent to each other around the first opening hole 8c when viewed from the first direction. According to the present embodiment, the pressing force in the first direction by the first screw member 15 can be efficiently transmitted to the first seal portion 11 by the first pressing portion 10m.
  • the part 11 overlaps at least partly.
  • the pressing force in the first direction by the first screw member 15 can be stably applied to the first seal portion 11. Therefore, the sealing function of the first seal portion 11 is more stable.
  • the second flange portion 14f is located outside the second seal portion 12 when viewed from the first direction.
  • the second flange portion 14f includes a second screw hole portion 14i and a second pressing portion 14j.
  • the second screw hole portion 14i penetrates the second flange portion 14f in the first direction, and a plurality of second screw hole portions 14i are arranged around the hole of the second opening hole 6c and spaced from each other along the inner periphery of the second opening hole 6c.
  • the second screw member 16 is passed through the second screw hole portion 14i.
  • the central axis of the second screw hole portion 14i and the screw axis of the second screw member 16 are substantially coincident with each other.
  • a metallic cylindrical member may be fitted to the inner peripheral portion of the second screw hole portion 14i.
  • the second pressing portion 14j has a plate shape.
  • the second pressing portion 14j extends in a direction perpendicular to the first direction.
  • the second pressing portion 14j is positioned outside the second seal portion 12 between the pair of second screw hole portions 14i adjacent to each other around the second opening hole 6c when viewed from the first direction. According to the present embodiment, the pressing force in the first direction by the second screw member 16 can be efficiently transmitted to the second seal portion 12 by the second pressing portion 14j.
  • a second imaginary line segment L2 connecting a pair of second screw members 16 adjacent to each other around the second opening hole 6c (the screw shafts of the second screw member 16), and a second seal The portion 12 overlaps at least partly.
  • the pressing force in the first direction by the second screw member 16 can be stably applied to the second seal portion 12. Therefore, the sealing function of the second seal portion 12 is more stable.
  • the first screw member 15 extends in the first direction.
  • the first screw member 15 includes a screw shaft portion 15a provided with a male screw portion on the outer periphery, and a screw head portion 15b having a larger outer diameter than the screw shaft portion 15a.
  • the first screw member 15 fixes the first connecting member 10 to the inverter case 8.
  • a plurality of first screw members 15 are provided. The plurality of first screw members 15 are arranged around the first opening hole 8c and spaced apart from each other along the inner periphery of the first opening hole 8c.
  • the second screw member 16 extends in the first direction.
  • the second screw member 16 has a screw shaft portion 16a provided with a male screw portion on the outer periphery, and a screw head portion 16b having an outer diameter larger than that of the screw shaft portion 16a.
  • the second screw member 16 fixes the second connecting member 14 to the housing 6.
  • a plurality of second screw members 16 are provided. The plurality of second screw members 16 are disposed around the second opening hole 6c and spaced from each other along the inner periphery of the second opening hole 6c.
  • the first connecting member 10 is stably fixed to the inverter case 8 by the plurality of first screw members 15.
  • the second connecting member 14 is stably fixed to the housing 6 by the plurality of second screw members 16.
  • the plurality of first screw members 15 and the plurality of second screw members 16 are alternately arranged without overlapping. According to this embodiment, it is suppressed that the space
  • the thickness (length in the first direction) of the screw heads 15b, 16b of either the first screw member 15 or the second screw member 16 can be accommodated. What is necessary is just to ensure the length of the 1st direction. Therefore, the motor unit 1 can be reduced in size.
  • the plurality of first screw members 15 and the plurality of second screw members 16 are arranged in line symmetry with respect to the symmetry axis orthogonal to the first direction.
  • the plurality (four) of first screw members 15 and the plurality of (four) second screw members 16 include the first seal portion 11.
  • the second seal portion 12 may be arranged line-symmetrically.
  • the plurality of first screw members 15 and the plurality of second screw members 16 are arranged in line symmetry with respect to the Y axis (symmetry axis) passing through the center of the first seal portion 11.
  • the 1st flange part 10h of the 1st connection member 10 and the 2nd flange part 14f of the 2nd connection member 14 can be made into a line symmetrical shape seeing from a 1st direction. Therefore, manufacture and assembly of each member become easy.
  • first screw members 15 When viewed from the first direction, the shape connecting the four first screw members 15 with line segments (first imaginary line segments L1) is a parallelogram having the first screw members 15 as corners.
  • second screw members 16 When viewed from the first direction, the shape connecting the four second screw members 16 with a line segment (second imaginary line segment L2) is a parallelogram having each second screw member 16 as a corner.
  • the outer shapes of the first flange portion 10h and the second flange portion 14f can be kept compact.
  • the first screw member 15 can be disposed close to the first seal portion 11, and the sealing function of the first seal portion 11 can be stabilized.
  • the second screw member 16 can be disposed close to the second seal portion 12, and the sealing function of the second seal portion 12 can be stabilized.
  • Each fixing strength by the 1st screw member 15 and the 2nd screw member 16 becomes more stable.
  • FIG. 8 shows a modification of the present embodiment.
  • three first screw members 15 and three second screw members 16 are provided.
  • the shape connecting the three first screw members 15 with a line segment (first imaginary line segment L1) when viewed from the first direction is an isosceles triangle with each first screw member 15 as a corner
  • the shape connecting the two screw members 16 with a line segment (second imaginary line segment L2) is an isosceles triangle with each second screw member 16 as a corner.
  • each quantity of the 1st screw member 15 and the 2nd screw member 16 can be reduced, and an assembly is easy.
  • the assembly of the support structure for the bus bar 9 straddling these members is easy.
  • assembly of the support structure of the bus bar 9 is easy, and the sealing performance of the second opening hole 6c and the first opening hole 8c is ensured.
  • the inverter case 8 and the motor housing 6a are adjacent to each other in the horizontal direction, the external dimension of the motor unit 1 in the vertical direction (gravity direction) can be kept small. For this reason, it is easy to accommodate the motor unit 1 in a limited installation space such as a vehicle.
  • a motor unit 100 according to a second embodiment of the present invention will be described with reference to FIGS.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
  • the description of the same steps as those of the method for manufacturing the motor unit 1 described in the first embodiment is omitted.
  • the motor unit 100 of the present embodiment is different from the motor unit 1 described in the above-described embodiments in the configuration of the first connecting member 10, the second connecting member 14, the third seal portion 13, the bus bar 9, the wiring member 33, and the like. Different.
  • the first connecting member 10 of the present embodiment includes a portion extending from the partition wall portion 10d toward the first direction in the first direction in the bus bar fixing portion 10c, and the insertion portion 10b. They are connected to each other in a direction orthogonal to the first direction. That is, a portion of the bus bar fixing portion 10c that extends from the partition wall portion 10d toward the one side in the first direction and an insertion portion 10b that surrounds the portion from the outside when viewed from the first direction extend in the first direction as a whole. It is provided integrally so as to form one column.
  • the insertion portion 10b has a plurality of guide ribs 10p provided on the outer peripheral surface of the insertion portion 10b and extending in the first direction.
  • the plurality of guide ribs 10p are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the insertion portion 10b.
  • the guide rib 10p is a portion of the outer peripheral surface of the insertion portion 10b facing the one side in the second direction (+ Z direction), a portion facing the other side in the second direction ( ⁇ Z direction), and one side in the axial direction (+ Y Direction) and a portion facing the other side in the axial direction ( ⁇ Y direction).
  • the guide rib 10p has a top surface 10q that faces the outside (the inner peripheral surface side of the second opening hole 6c) when viewed from the first direction.
  • the top surface 10q is planar, for example.
  • the second connecting member 14 of the present embodiment does not have the inner cylinder portion 14c and the connecting wall portion 14d. For this reason, the 2nd connection member 14 is set as a simple structure, and it is easy to manufacture a member.
  • the guide tube portion 14a has a plurality of guide grooves 14m provided on the inner peripheral surface of the guide tube portion 14a and extending in the first direction. The plurality of guide grooves 14m are arranged at intervals from each other along the circumferential direction of the inner peripheral surface of the guide cylinder portion 14a.
  • the guide groove 14m is a portion of the inner peripheral surface of the guide cylinder portion 14a that faces the second direction one side (+ Z direction), a portion that faces the second direction other side ( ⁇ Z direction), and one axial direction. Arranged in a portion facing the side (+ Y direction) and a portion facing the other side in the axial direction ( ⁇ Y direction).
  • the guide groove 14m has a bottom surface 14n facing inward (bus bar 9 side) when viewed from the first direction.
  • the bottom surface 14n has a planar shape, for example.
  • each guide rib 10p When inserting the insertion portion 10b into the guide tube portion 14a, each guide rib 10p is inserted into each guide groove 14m from the first direction. That is, each guide rib 10p is disposed in each guide groove 14m.
  • the top surface 10q and the bottom surface 14n face each other.
  • the size of the gap between the bottom surface 14n of the guide groove 14m and the top surface 10q of the guide rib 10p is smaller than the size of the gap between the inner peripheral surface of the guide cylinder portion 14a and the outer peripheral surface of the insertion portion 10b.
  • the guide rib 10p of the insertion portion 10b is disposed in the guide groove 14m of the guide tube portion 14a, so that the fitting between the guide tube portion 14a and the insertion portion 10b is stabilized and rattling is suppressed. . Further, when fixing the housing 6 and the inverter case 8 by screwing the fixing member 6f from the direction orthogonal to the first direction, the bottom surface 14n of the guide groove 14m and the top surface 10q of the guide rib 10p come into contact with each other, thereby guiding the guide. The size of the gap between the inner peripheral surface of the cylindrical portion 14a and the outer peripheral surface of the insertion portion 10b is kept constant over the entire circumference.
  • this embodiment is compared with a configuration that requires high accuracy such that the fitting tolerance between the inner peripheral surface of the guide tube portion 14a and the outer peripheral surface of the insertion portion 10b is reduced over the entire circumference.
  • it is easy to insert the insertion portion 10b into the guide tube portion 14a, and it is easy to assemble the first connection member 10 and the second connection member 14.
  • it is suppressed that the high precision is requested
  • the third seal portion 13 of the present embodiment is a D ring or the like having a D-shaped cross section. For this reason, it is suppressed that the 3rd seal part 13 twists in the 3rd groove part 10k, and the sealing performance by the 3rd seal part 13 is stabilized more.
  • the end 33b on the other side in the first direction of the wiring member 33 is positioned on one side in the second direction (+ Z direction) as it goes to the other side in the first direction ( ⁇ X direction).
  • at least one of the wiring member 33 and the bus bar 9 can be elastically deformed, and the plate surface of the end portion 33b of the wiring member 33 and the bus bar can be secured by screwing the wiring screw portion 18 and the nut portion 19. 9 is in contact with the plate surface of the end portion 9d.
  • the end portion 9 d on the one side in the first direction of the bus bar 9 can be held by the end portion 33 b on the other side in the first direction of the wiring member 33. It is suppressed. That is, the tip of the end 9d on the one side in the first direction of the bus bar 9 is prevented from hitting the tip of the end 33b on the other side in the first direction of the wiring member 33, and the bus bar 9 is stabilized to a predetermined position in the housing 6. Inserted. Therefore, the assembly workability is good. Further, since at least one of the wiring member 33 and the bus bar 9 can be elastically deformed while improving the assembly workability as described above, by screwing the wiring screw portion 18 to the nut portion 19, A stable contact area with the bus bar 9 is ensured.
  • FIG. 13 shows a modification of the present embodiment.
  • the end 9d on one side in the first direction of the bus bar 9 is positioned on the other side in the second direction ( ⁇ Z direction) as it goes toward the one side in the first direction (+ X direction).
  • the amount of elastic deformation of the wiring member 33 and the bus bar 9 can be kept small while improving the assembly workability as described above. For this reason, the stress which arises in the wiring member 33, the bus bar 9, these peripheral members, etc. is suppressed.
  • the second connecting member 14 has the inner cylinder portion 14c, but is not limited thereto.
  • the second connecting member 14 does not have the inner cylinder portion 14c.
  • the first seal part 11 may not be an O-ring.
  • the first seal portion 11 may be liquid or gel.
  • the first seal portion 11 may be made of silicone resin.
  • the first seal portion 11 may not be elastically deformable.
  • the first seal portion 11 and the first connecting member 10 may be a single member portion produced by two-color molding.
  • the second seal portion 12 may not be an O-ring.
  • the second seal portion 12 may be liquid or gel.
  • the second seal portion 12 may be made of silicone resin.
  • the second seal portion 12 may not be elastically deformable.
  • the second seal portion 12 and the second connecting member 14 may be a single member portion produced by two-color molding.
  • the third seal portion 13 may not be an O-ring.
  • the third seal portion 13 may be liquid or gel.
  • the third seal portion 13 may be made of silicone resin.
  • the third seal portion 13 may not be elastically deformable.
  • the third seal portion 13 and the first connecting member 10 may be a single member portion produced by two-color molding.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

An aspect of a motor unit of the present invention is provided with: a motor; an inverter electrically connected to the motor; a bus bar which has a part extending in a first direction, and connects the motor and the inverter; an inverter case which has a first opening hole, through which the bus bar passes, and in which the inverter is accommodated; a first connecting member which is fixed to the inverter case to block the first opening hole, and supports the bus bar; and a housing which has a second opening hole that is opposite to the first opening hole in a first direction and in which the motor is accommodated. The bus bar is inserted into the second opening hole.

Description

モータユニットおよびモータユニットの製造方法Motor unit and method for manufacturing motor unit
　本発明は、モータユニットおよびモータユニットの製造方法に関する。本願は、２０１８年０４月２５日に出願された日本国特許出願第２０１８－０８４４６５号に基づき優先権を主張し、その内容をここに援用する。 The present invention relates to a motor unit and a method for manufacturing the motor unit. This application claims priority based on Japanese Patent Application No. 2018-084465 filed on Apr. 25, 2018, the contents of which are incorporated herein by reference.
　従来、モータと、インバータと、バスバーと、ハウジングと、インバータケースと、を備えるモータユニットが知られる。インバータは、モータに電力を供給する。バスバーは、モータとインバータとを接続する。ハウジングは、モータを収容する。インバータケースは、インバータを収容する。特許文献１には、車輪駆動用のモータに電力を供給するインバータと、モータを収容するドライブトレインとの電気的接続構造が記載される。 Conventionally, a motor unit including a motor, an inverter, a bus bar, a housing, and an inverter case is known. The inverter supplies power to the motor. The bus bar connects the motor and the inverter. The housing houses the motor. The inverter case accommodates the inverter. Patent Document 1 describes an electrical connection structure between an inverter that supplies electric power to a wheel driving motor and a drive train that houses the motor.
特開２０１３－９７９４６号公報JP 2013-97946 A
　この種のモータユニットでは、組み立て時において、インバータケース内に塵埃等の異物などが入ることを抑制する点に改善の余地があった。 This type of motor unit has room for improvement in that it prevents foreign matter such as dust from entering the inverter case during assembly.
　上記事情に鑑み、本発明は、インバータケース内に塵埃等の異物などが入ることを抑制できるモータユニットおよびモータユニットの製造方法を提供することを目的の一つとする。 In view of the above circumstances, an object of the present invention is to provide a motor unit and a method for manufacturing the motor unit that can prevent foreign matter such as dust from entering the inverter case.
　本発明のモータユニットの一つの態様は、モータと、前記モータと電気的に接続されるインバータと、第１方向に延びる部分を有し、前記モータと前記インバータとを接続するバスバーと、前記バスバーが通される第１開口孔を有し、前記インバータが収容されるインバータケースと、前記インバータケースに固定されて前記第１開口孔を塞ぎ、前記バスバーを支持する第１連結部材と、前記第１開口孔と前記第１方向に対向する第２開口孔を有し、前記モータが収容されるハウジングと、を備え、前記バスバーが、前記第２開口孔に挿入される。 One aspect of the motor unit of the present invention includes a motor, an inverter electrically connected to the motor, a portion extending in a first direction, a bus bar connecting the motor and the inverter, and the bus bar An inverter case in which the inverter is accommodated, a first connecting member fixed to the inverter case to close the first opening hole and supporting the bus bar, A housing having a first opening hole and a second opening hole facing the first direction and accommodating the motor, wherein the bus bar is inserted into the second opening hole.
　また、本発明のモータユニットの製造方法の一つの態様は、インバータが収容されるインバータケースの第１開口孔に、バスバーを通し、前記インバータケースの外面から前記バスバーの一部を突出させて、前記インバータケースに前記バスバーを固定する工程と、モータが収容されるハウジングの第２開口孔に、前記バスバーの一部を挿入する工程と、前記ハウジング内において、前記バスバーと前記モータとを接続する工程と、を含む。 Further, in one aspect of the method for manufacturing a motor unit of the present invention, the bus bar is passed through the first opening hole of the inverter case in which the inverter is accommodated, and a part of the bus bar is projected from the outer surface of the inverter case. The step of fixing the bus bar to the inverter case, the step of inserting a part of the bus bar into the second opening hole of the housing in which the motor is accommodated, and the bus bar and the motor are connected in the housing. And a process.
　本発明の一つの態様のモータユニットおよびモータユニットの製造方法によれば、インバータケース内に塵埃等の異物などが入ることを抑制できる。 According to the motor unit and the manufacturing method of the motor unit of one aspect of the present invention, it is possible to suppress foreign matters such as dust from entering the inverter case.
図１は、第１実施形態のモータユニットの概念図である。FIG. 1 is a conceptual diagram of a motor unit according to the first embodiment. 図２は、第１実施形態のモータユニットの側面模式図である。FIG. 2 is a schematic side view of the motor unit according to the first embodiment. 図３は、図２のIII部の断面拡大図であり、モータ軸に垂直な断面を示す。FIG. 3 is an enlarged cross-sectional view of a portion III in FIG. 図４は、インバータケースに固定された第１連結部材近傍を示す斜視図である。FIG. 4 is a perspective view showing the vicinity of the first connecting member fixed to the inverter case. 図５は、ハウジングの作業用孔部近傍を示す斜視図である。FIG. 5 is a perspective view showing the vicinity of the working hole of the housing. 図６は、組み立てられた状態の第１連結部材および第２連結部材を示す斜視図である。FIG. 6 is a perspective view showing the first connecting member and the second connecting member in an assembled state. 図７は、組み立てられた状態の第１連結部材および第２連結部材を第１方向から見た図である。FIG. 7 is a view of the assembled first and second connecting members as viewed from the first direction. 図８は、図７に示す第１実施形態の変形例である。FIG. 8 is a modification of the first embodiment shown in FIG. 図９は、第２実施形態のモータユニットの一部を示す断面図であり、モータ軸に垂直な断面を表す。FIG. 9 is a cross-sectional view showing a part of the motor unit of the second embodiment, and shows a cross section perpendicular to the motor shaft. 図１０は、第２実施形態の第１連結部材およびバスバーを示す斜視図である。FIG. 10 is a perspective view showing the first connecting member and the bus bar of the second embodiment. 図１１は、第２実施形態の第１連結部材およびバスバーを示す斜視図である。FIG. 11 is a perspective view showing the first connecting member and the bus bar of the second embodiment. 図１２は、第２実施形態の第２連結部材を示す斜視図である。FIG. 12 is a perspective view showing a second connecting member of the second embodiment. 図１３は、第２実施形態の変形例のバスバーおよび配線部材を示す断面図である。FIG. 13 is a cross-sectional view illustrating a bus bar and a wiring member according to a modification of the second embodiment.
＜第１実施形態＞
　以下、図面を参照しながら、本発明の実施形態のモータユニットについて説明する。なお、本発明の範囲は、以下の実施の形態に限定されず、本発明の技術的思想の範囲内で任意に変更可能である。 <First Embodiment>
Hereinafter, a motor unit according to an embodiment of the present invention will be described with reference to the drawings. The scope of the present invention is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical idea of the present invention.
　以下の説明では、モータユニット１が水平な路面上に位置する車両に搭載された場合の位置関係を基に、重力方向を規定して説明する。また、図面においては、適宜３次元直交座標系としてＸＹＺ座標系を示す。ＸＹＺ座標系において、Ｚ軸方向は、鉛直方向（すなわち上下方向）を示し、＋Ｚ方向が上側（重力方向の反対側）であり、－Ｚ方向が下側（重力方向）である。また、Ｘ軸方向は、Ｚ軸方向と直交する方向であってモータユニット１が搭載される車両の前後方向を示し、＋Ｘ方向が車両前方であり、－Ｘ方向が車両後方である。ただし、＋Ｘ方向が車両後方であり、－Ｘ方向が車両前方となることもありうる。Ｙ軸方向は、Ｘ軸方向とＺ軸方向の両方と直交する方向であって、車両の幅方向（左右方向）を示し、＋Ｙ方向が車両左方であり、－Ｙ方向が車両右方である。ただし、＋Ｘ方向が車両後方となる場合には、＋Ｙ方向が車両右方であり、－Ｙ方向が車両左方となることもありうる。すなわち、Ｘ軸の方向に関わらず、単に＋Ｙ方向が車両左右方向の一方側となり、－Ｙ方向が車両左右方向の他方側となる。 In the following description, the direction of gravity will be defined and described based on the positional relationship when the motor unit 1 is mounted on a vehicle located on a horizontal road surface. In the drawings, an XYZ coordinate system is appropriately shown as a three-dimensional orthogonal coordinate system. In the XYZ coordinate system, the Z-axis direction indicates the vertical direction (that is, the vertical direction), the + Z direction is the upper side (opposite to the gravity direction), and the −Z direction is the lower side (gravity direction). The X-axis direction is a direction orthogonal to the Z-axis direction and indicates the front-rear direction of the vehicle on which the motor unit 1 is mounted. The + X direction is the front of the vehicle, and the −X direction is the rear of the vehicle. However, the + X direction may be the rear of the vehicle, and the −X direction may be the front of the vehicle. The Y-axis direction is a direction orthogonal to both the X-axis direction and the Z-axis direction, and indicates the vehicle width direction (left-right direction). The + Y direction is the left side of the vehicle, and the -Y direction is the right side of the vehicle. is there. However, when the + X direction is the rear of the vehicle, the + Y direction may be the right side of the vehicle and the −Y direction may be the left side of the vehicle. That is, regardless of the X-axis direction, the + Y direction is simply one side of the vehicle left-right direction, and the -Y direction is the other side of the vehicle left-right direction.
　以下の説明において特に断りのない限り、モータ２のモータ軸Ｊ２に平行な方向（Ｙ軸方向）を単に「軸方向」と呼び、モータ軸Ｊ２を中心とする径方向を単に「径方向」と呼び、モータ軸Ｊ２を中心とする周方向、すなわち、モータ軸Ｊ２の軸周りを単に「周方向」と呼ぶ。ただし、上記の「平行な方向」は、略平行な方向も含む。 In the following description, unless otherwise specified, the direction parallel to the motor axis J2 of the motor 2 (Y-axis direction) is simply referred to as “axial direction”, and the radial direction around the motor axis J2 is simply referred to as “radial direction”. The circumferential direction around the motor shaft J2, that is, the circumference of the motor shaft J2, is simply referred to as “circumferential direction”. However, the above “parallel direction” includes a substantially parallel direction.
　本発明の例示的な第１実施形態に係るモータユニット（電動駆動装置）１について説明する。
　図１は、第１実施形態のモータユニット１の概念図である。図２は、モータユニット１を車両側方から見た側面模式図である。なお、図１は、あくまで概念図であり、各部の配置および寸法が実際と同じであるとは限らない。 A motor unit (electric drive device) 1 according to an exemplary first embodiment of the present invention will be described.
FIG. 1 is a conceptual diagram of a motor unit 1 according to the first embodiment. FIG. 2 is a schematic side view of the motor unit 1 as viewed from the side of the vehicle. In addition, FIG. 1 is a conceptual diagram to the last, and the arrangement and dimensions of each part are not always the same.
　モータユニット１は、ハイブリッド自動車（ＨＥＶ）、プラグインハイブリッド自動車（ＰＨＶ）、電気自動車（ＥＶ）等、モータを動力源とする車両に搭載され、その動力源として使用される。 The motor unit 1 is mounted on a vehicle using a motor as a power source, such as a hybrid vehicle (HEV), a plug-in hybrid vehicle (PHV), or an electric vehicle (EV), and is used as the power source.
　図１～図５に示すように、本実施形態のモータユニット１は、モータ（メインモータ）２と、ギヤ部３と、ハウジング６と、インバータ７と、インバータケース８と、固定部材６ｆと、バスバー９と、配線ネジ部１８と、蓋部１７と、第１連結部材１０と、ナット部１９と、第２連結部材１４と、第１シール部１１と、第２シール部１２と、第３シール部１３と、第１ネジ部材１５と、第２ネジ部材１６と、を備える。モータ２のモータ軸Ｊ２は、後述する第１方向（本実施形態の例ではＸ軸方向）と直交する方向に延びる。モータ軸Ｊ２は、Ｙ軸方向に延びる。 As shown in FIGS. 1 to 5, the motor unit 1 of the present embodiment includes a motor (main motor) 2, a gear portion 3, a housing 6, an inverter 7, an inverter case 8, a fixing member 6f, The bus bar 9, the wiring screw portion 18, the lid portion 17, the first connecting member 10, the nut portion 19, the second connecting member 14, the first seal portion 11, the second seal portion 12, and the third A seal portion 13, a first screw member 15, and a second screw member 16 are provided. The motor shaft J2 of the motor 2 extends in a direction orthogonal to a first direction (X-axis direction in the example of the present embodiment) described later. The motor shaft J2 extends in the Y-axis direction.
　モータ２は、モータ軸Ｊ２を中心として回転するロータ２０と、ロータ２０と対向するステータ３０と、を備える。ステータ３０は、ロータ２０と径方向に対向する。ハウジング６の内部は、モータ２およびギヤ部３を収容する収容空間８０が設けられる。収容空間８０は、モータ２を収容するモータ室８１と、ギヤ部３を収容するギヤ室８２と、に区画される。 The motor 2 includes a rotor 20 that rotates about the motor shaft J2 and a stator 30 that faces the rotor 20. The stator 30 faces the rotor 20 in the radial direction. A housing space 80 for housing the motor 2 and the gear portion 3 is provided inside the housing 6. The accommodating space 80 is partitioned into a motor chamber 81 that accommodates the motor 2 and a gear chamber 82 that accommodates the gear portion 3.
　モータ２はハウジング６のモータ室８１に収容される。モータ２は、ロータ２０と、ロータ２０に径方向外側から対向するステータ３０と、を備える。すなわち本実施形態のステータ３０は、ロータ２０の径方向外側に位置する。本実施形態のモータ２は、ステータ３０と、ステータ３０の内側に回転自在に配置されるロータ２０と、を備えるインナーロータ型モータである。 The motor 2 is accommodated in a motor chamber 81 of the housing 6. The motor 2 includes a rotor 20 and a stator 30 that faces the rotor 20 from the outside in the radial direction. That is, the stator 30 of this embodiment is located on the radially outer side of the rotor 20. The motor 2 of the present embodiment is an inner rotor type motor including a stator 30 and a rotor 20 that is rotatably disposed inside the stator 30.
　ロータ２０は、図示略のバッテリからインバータ７を通してステータ３０に電力が供給されることで回転する。ロータ２０は、シャフト（モータシャフト）２１と、ロータコア２４と、ロータマグネット（図示略）と、を有する。ロータ２０（すなわち、シャフト２１、ロータコア２４およびロータマグネット）は、水平方向に延びるモータ軸Ｊ２を中心として回転する。ロータ２０のトルクは、ギヤ部３に伝達される。 The rotor 20 rotates when electric power is supplied from a battery (not shown) to the stator 30 through the inverter 7. The rotor 20 includes a shaft (motor shaft) 21, a rotor core 24, and a rotor magnet (not shown). The rotor 20 (that is, the shaft 21, the rotor core 24, and the rotor magnet) rotates around the motor shaft J2 extending in the horizontal direction. The torque of the rotor 20 is transmitted to the gear unit 3.
　シャフト２１は、水平方向かつ車両の幅方向に延びるモータ軸Ｊ２を中心として延びる。シャフト２１は、モータ軸Ｊ２を中心として回転する。シャフト２１は、内部にモータ軸Ｊ２に沿って延びる内周面を有する中空部が設けられた中空シャフトである。 The shaft 21 extends around a motor shaft J2 extending in the horizontal direction and in the vehicle width direction. The shaft 21 rotates about the motor shaft J2. The shaft 21 is a hollow shaft in which a hollow portion having an inner peripheral surface extending along the motor axis J2 is provided.
　シャフト２１は、ハウジング６のモータ室８１とギヤ室８２とを跨いで延びる。シャフト２１の一方の端部は、ギヤ室８２側に突出する。ギヤ室８２に突出するシャフト２１の端部には、第１のギヤ４１が固定されている。 The shaft 21 extends across the motor chamber 81 and the gear chamber 82 of the housing 6. One end of the shaft 21 protrudes toward the gear chamber 82 side. The first gear 41 is fixed to the end of the shaft 21 protruding into the gear chamber 82.
　ロータコア２４は、珪素鋼板を積層して構成される。ロータコア２４は、軸方向に沿って延びる円柱体である。ロータコア２４には、複数のロータマグネットが固定される。複数のロータマグネットは、磁極を交互にして周方向に沿って並ぶ。 The rotor core 24 is configured by laminating silicon steel plates. The rotor core 24 is a cylindrical body extending along the axial direction. A plurality of rotor magnets are fixed to the rotor core 24. The plurality of rotor magnets are arranged along the circumferential direction with alternating magnetic poles.
　ステータ３０は、ロータ２０を径方向外側から囲む。ステータ３０は、ステータコア３２と、コイル３１と、ステータコア３２とコイル３１との間に介在するインシュレータ（図示略）と、コイル３１とバスバー９を接続する配線部材３３と、を有する。つまりモータ２は、配線部材３３を有する。ステータ３０は、ハウジング６に保持される。ステータコア３２は、図示を省略するが、円環状のヨークと、ヨークの内周面から径方向内方に延びる複数の磁極歯とを有する。磁極歯の間には、コイル線（図示略）が掛けまわされる。磁極歯に掛けまわされたコイル線は、コイル３１を構成する。コイル線は、配線部材３３およびバスバー９を介してインバータ７に接続される。コイル３１は、ステータコア３２の軸方向端面から突出するコイルエンド３１ａを有する。コイルエンド３１ａは、ロータ２０のロータコア２４の端部よりも軸方向に突出する。コイルエンド３１ａは、ロータコア２４に対し軸方向両側に突出する。 The stator 30 surrounds the rotor 20 from the outside in the radial direction. The stator 30 includes a stator core 32, a coil 31, an insulator (not shown) interposed between the stator core 32 and the coil 31, and a wiring member 33 that connects the coil 31 and the bus bar 9. That is, the motor 2 has the wiring member 33. The stator 30 is held by the housing 6. Although not shown, the stator core 32 includes an annular yoke and a plurality of magnetic pole teeth extending radially inward from the inner peripheral surface of the yoke. A coil wire (not shown) is wound between the magnetic pole teeth. The coil wire wound around the magnetic pole teeth constitutes the coil 31. The coil wire is connected to the inverter 7 via the wiring member 33 and the bus bar 9. The coil 31 has a coil end 31 a protruding from the axial end surface of the stator core 32. The coil end 31 a protrudes in the axial direction from the end of the rotor core 24 of the rotor 20. The coil end 31 a protrudes on both sides in the axial direction with respect to the rotor core 24.
　ギヤ部３は、ハウジング６のギヤ室８２に収容される。ギヤ部３は、モータ軸Ｊ２の軸方向一方側においてシャフト２１に接続される。ギヤ部３は、減速装置４と差動装置５とを有する。モータ２から出力されるトルクは、減速装置４を介して差動装置５に伝達される。 The gear part 3 is accommodated in the gear chamber 82 of the housing 6. The gear unit 3 is connected to the shaft 21 on one axial side of the motor shaft J2. The gear unit 3 includes a speed reduction device 4 and a differential device 5. Torque output from the motor 2 is transmitted to the differential device 5 via the speed reducer 4.
　減速装置４は、モータ２のロータ２０に接続される。減速装置４は、モータ２の回転速度を減じて、モータ２から出力されるトルクを減速比に応じて増大させる機能を有する。減速装置４は、モータ２から出力されるトルクを差動装置５へ伝達する。 The reduction gear 4 is connected to the rotor 20 of the motor 2. The reduction gear 4 has a function of reducing the rotational speed of the motor 2 and increasing the torque output from the motor 2 in accordance with the reduction ratio. The reduction gear 4 transmits the torque output from the motor 2 to the differential device 5.
　減速装置４は、第１のギヤ（中間ドライブギヤ）４１と、第２のギヤ（中間ギヤ）４２と、第３のギヤ（ファイルナルドライブギヤ）４３と、中間シャフト４５と、を有する。モータ２から出力されるトルクは、モータ２のシャフト２１、第１のギヤ４１、第２のギヤ４２、中間シャフト４５および第３のギヤ４３を介して差動装置５のリングギヤ（ギヤ）５１へ伝達される。各ギヤのギヤ比およびギヤの個数等は、必要とされる減速比に応じて種々に変更可能である。減速装置４は、各ギヤの軸芯が互いに平行に配置される平行軸歯車タイプの減速機である。 The reduction gear 4 includes a first gear (intermediate drive gear) 41, a second gear (intermediate gear) 42, a third gear (file null drive gear) 43, and an intermediate shaft 45. Torque output from the motor 2 is transmitted to the ring gear (gear) 51 of the differential device 5 via the shaft 21, the first gear 41, the second gear 42, the intermediate shaft 45 and the third gear 43 of the motor 2. Communicated. The gear ratio of each gear, the number of gears, and the like can be variously changed according to the required reduction ratio. The reduction gear 4 is a parallel shaft gear type reduction gear in which the shaft cores of the respective gears are arranged in parallel to each other.
　第１のギヤ４１は、モータ２のシャフト２１の外周面に設けられる。第１のギヤ４１は、シャフト２１とともに、モータ軸Ｊ２を中心に回転する。中間シャフト４５は、モータ軸Ｊ２と平行な中間軸Ｊ４に沿って延びる。中間シャフト４５は、中間軸Ｊ４を中心として回転する。第２のギヤ４２および第３のギヤ４３は、中間シャフト４５の外周面に設けられる。第２のギヤ４２と第３のギヤ４３は、中間シャフト４５を介して接続される。第２のギヤ４２および第３のギヤ４３は、中間軸Ｊ４を中心として回転する。第２のギヤ４２は、第１のギヤ４１に噛み合う。第３のギヤ４３は、差動装置５のリングギヤ５１と噛み合う。第３のギヤ４３は、第２のギヤ４２に対して隔壁６１ｃ側（モータ軸Ｊ２の軸方向他方側）に位置する。 The first gear 41 is provided on the outer peripheral surface of the shaft 21 of the motor 2. The first gear 41 rotates with the shaft 21 around the motor shaft J2. The intermediate shaft 45 extends along an intermediate axis J4 that is parallel to the motor axis J2. The intermediate shaft 45 rotates around the intermediate axis J4. The second gear 42 and the third gear 43 are provided on the outer peripheral surface of the intermediate shaft 45. The second gear 42 and the third gear 43 are connected via an intermediate shaft 45. The second gear 42 and the third gear 43 rotate around the intermediate shaft J4. The second gear 42 meshes with the first gear 41. The third gear 43 meshes with the ring gear 51 of the differential device 5. The third gear 43 is located on the partition wall 61c side (the other side in the axial direction of the motor shaft J2) with respect to the second gear 42.
　差動装置５は、減速装置４を介してモータ２に接続される。差動装置５は、モータ２から出力されるトルクを車両の車輪に伝達する装置である。差動装置５は、車両の旋回時に、左右の車輪の速度差を吸収しつつ、左右両輪の車軸５５に同トルクを伝える機能を有する。差動装置５は、リングギヤ５１と、ギヤハウジング（不図示）と、一対のピニオンギヤ（不図示）と、ピニオンシャフト（不図示）と、一対のサイドギヤ（不図示）と、を有する。 The differential device 5 is connected to the motor 2 via the speed reducer 4. The differential device 5 is a device that transmits torque output from the motor 2 to the wheels of the vehicle. The differential device 5 has a function of transmitting the same torque to the axles 55 of the left and right wheels while absorbing the speed difference between the left and right wheels when the vehicle is turning. The differential 5 includes a ring gear 51, a gear housing (not shown), a pair of pinion gears (not shown), a pinion shaft (not shown), and a pair of side gears (not shown).
　リングギヤ５１は、モータ軸Ｊ２と平行な差動軸Ｊ５を中心として回転する。リングギヤ５１には、モータ２から出力されるトルクが減速装置４を介して伝えられる。すなわち、リングギヤ５１は、他のギヤを介してモータ２に接続される。ギヤ部３が有する複数のギヤにおいて、リングギヤ５１は外径が最も大きい。 The ring gear 51 rotates around a differential axis J5 parallel to the motor axis J2. Torque output from the motor 2 is transmitted to the ring gear 51 via the reduction gear 4. That is, the ring gear 51 is connected to the motor 2 via another gear. Of the plurality of gears included in the gear portion 3, the ring gear 51 has the largest outer diameter.
　モータ軸Ｊ２、中間軸Ｊ４および差動軸Ｊ５は、水平方向に沿って互いに平行に延びる。図２に示すようにモータ軸Ｊ２の軸方向から見て、モータ軸Ｊ２に対して中間軸Ｊ４および差動軸Ｊ５は、下側に位置する。したがって、減速装置４および差動装置５は、モータ２より下側に位置する。中間軸Ｊ４の上下方向の位置と、差動軸Ｊ５の上下方向の位置とは、略同じである。ただしこれに限らず、差動軸Ｊ５の上下方向の位置は、中間軸Ｊ４の上下方向の位置より上側でもよい。この場合、モータユニット１の上下方向の外形をよりコンパクトに抑えることができる。なお、差動軸Ｊ５の上下方向の位置は、中間軸Ｊ４の上下方向の位置より下側でもよい。 The motor shaft J2, the intermediate shaft J4, and the differential shaft J5 extend in parallel to each other along the horizontal direction. As shown in FIG. 2, when viewed from the axial direction of the motor shaft J2, the intermediate shaft J4 and the differential shaft J5 are positioned below the motor shaft J2. Therefore, the speed reduction device 4 and the differential device 5 are located below the motor 2. The vertical position of the intermediate shaft J4 and the vertical position of the differential shaft J5 are substantially the same. However, the present invention is not limited to this, and the vertical position of the differential shaft J5 may be higher than the vertical position of the intermediate shaft J4. In this case, the outer shape of the motor unit 1 in the vertical direction can be suppressed more compactly. The vertical position of the differential shaft J5 may be lower than the vertical position of the intermediate shaft J4.
　ハウジング６は、例えばアルミ合金等の金属製である。図示を省略しているが、ハウジング６は、複数の部材を組み合わせて構成される。なおハウジング６は、単一の部材で構成されてもよい。図１に示すように、ハウジング６の内部に設けられた収容空間８０には、モータ２およびギヤ部３が収容される。ハウジング６は、収容空間８０においてモータ２およびギヤ部３を保持する。ハウジング６は、隔壁６１ｃを有する。ハウジング６の収容空間８０は、隔壁６１ｃによってモータ室８１とギヤ室８２とに区画される。モータ室８１には、モータ２が収容される。ギヤ室８２には、ギヤ部３（すなわち、減速装置４および差動装置５）が収容される。 The housing 6 is made of metal such as aluminum alloy. Although not shown, the housing 6 is configured by combining a plurality of members. The housing 6 may be composed of a single member. As shown in FIG. 1, the motor 2 and the gear unit 3 are housed in the housing space 80 provided inside the housing 6. The housing 6 holds the motor 2 and the gear portion 3 in the accommodation space 80. The housing 6 has a partition wall 61c. The housing space 80 of the housing 6 is partitioned into a motor chamber 81 and a gear chamber 82 by a partition wall 61c. The motor 2 is accommodated in the motor chamber 81. The gear chamber 82 accommodates the gear portion 3 (that is, the speed reduction device 4 and the differential device 5).
　収容空間８０内の下部領域には、オイルＯが溜るオイル溜りＰが設けられる。本実施形態では、モータ室８１の底部８１ａは、ギヤ室８２の底部８２ａより上側に位置する。また、モータ室８１とギヤ室８２とを区画する隔壁６１ｃには、隔壁開口６８が設けられる。隔壁開口６８は、モータ室８１とギヤ室８２とを連通させる。隔壁開口６８は、モータ室８１内の下部領域に溜ったオイルＯをギヤ室８２に移動させる。隔壁６１ｃには、上述の隔壁開口６８に加えて、モータ２のシャフト２１を挿通させる挿通孔６１ｆが設けられる。 In the lower region in the accommodation space 80, an oil reservoir P in which oil O is accumulated is provided. In the present embodiment, the bottom 81 a of the motor chamber 81 is located above the bottom 82 a of the gear chamber 82. Further, a partition wall opening 68 is provided in the partition wall 61 c that partitions the motor chamber 81 and the gear chamber 82. The partition opening 68 allows the motor chamber 81 and the gear chamber 82 to communicate with each other. The partition opening 68 moves the oil O accumulated in the lower region in the motor chamber 81 to the gear chamber 82. The partition wall 61c is provided with an insertion hole 61f through which the shaft 21 of the motor 2 is inserted in addition to the partition wall opening 68 described above.
　オイル溜りＰには、差動装置５の一部が浸かる。オイル溜りＰに溜るオイルＯは、差動装置５の動作によってかき上げられて、一部がギヤ室８２内に拡散される。ギヤ室８２に拡散されたオイルＯは、ギヤ室８２内の減速装置４および差動装置５の各ギヤに供給されてギヤの歯面にオイルＯを行き渡らせる。減速装置４および差動装置５に使用されたオイルＯは、滴下してギヤ室８２の下側に位置するオイル溜りＰに回収される。収容空間８０のオイル溜りＰの容量は、モータユニット１の停止時に、差動装置５の軸受の一部がオイルＯに浸かる程度である。 A part of the differential 5 is immersed in the oil reservoir P. The oil O accumulated in the oil reservoir P is pumped up by the operation of the differential 5 and partly diffuses into the gear chamber 82. The oil O diffused in the gear chamber 82 is supplied to the gears of the reduction gear 4 and the differential device 5 in the gear chamber 82, and spreads the oil O on the gear teeth. The oil O used in the speed reduction device 4 and the differential device 5 is dropped and collected in an oil sump P located below the gear chamber 82. The capacity of the oil reservoir P in the accommodation space 80 is such that a part of the bearing of the differential device 5 is immersed in the oil O when the motor unit 1 is stopped.
　オイルＯは、ハウジング６に設けられた油路（図示略）内を循環する。油路は、オイル溜りＰからオイルＯをモータ２に供給するオイルＯの経路である。油路は、オイルＯを循環させてモータ２を冷却する。 Oil O circulates in an oil passage (not shown) provided in the housing 6. The oil path is a path of oil O that supplies oil O from the oil reservoir P to the motor 2. The oil path cools the motor 2 by circulating the oil O.
　オイルＯは減速装置４および差動装置５の潤滑用として使用される。また、オイルＯは、モータ２の冷却用として使用される。オイルＯはギヤ室８２内の下部領域（すなわちオイル溜りＰ）に溜る。オイルＯは、潤滑油および冷却油の機能を奏するため、粘度の低いオートマチックトランスミッション用潤滑油（ＡＴＦ：Automatic Transmission Fluid）と同等のものを用いることが好ましい。 Oil O is used for lubricating the speed reducer 4 and the differential 5. The oil O is used for cooling the motor 2. Oil O accumulates in the lower region (namely, oil reservoir P) in the gear chamber 82. Since the oil O functions as a lubricating oil and a cooling oil, it is preferable to use an oil equivalent to a low-viscosity automatic transmission lubricating oil (ATF).
　図１および図２において、ハウジング６は、モータ２を収容するモータ収容部６ａと、ギヤ部３を収容するギヤ収容部６ｂと、を有する。つまりハウジング６には、モータ２が収容される。モータ収容部６ａは、モータ軸Ｊ２を中心とする略円筒状である。 1 and 2, the housing 6 has a motor housing portion 6a for housing the motor 2 and a gear housing portion 6b for housing the gear portion 3. That is, the motor 2 is accommodated in the housing 6. The motor housing portion 6a has a substantially cylindrical shape centered on the motor shaft J2.
　図３に示すように、モータ収容部６ａは、インバータケース８に対向する壁部６ｅと、壁部６ｅをＸ軸方向に貫通する第２開口孔６ｃと、モータ収容部６ａの上側を覆う頂壁部６ｈと、頂壁部６ｈをＺ軸方向に貫通する作業用孔部６ｊと、を有する。つまりハウジング６は、第２開口孔６ｃと、作業用孔部６ｊとを有する。 As shown in FIG. 3, the motor housing portion 6a covers the wall portion 6e facing the inverter case 8, the second opening hole 6c penetrating the wall portion 6e in the X-axis direction, and the top side of the motor housing portion 6a. It has a wall 6h and a work hole 6j that penetrates the top wall 6h in the Z-axis direction. That is, the housing 6 has a second opening hole 6c and a work hole 6j.
　第２開口孔６ｃは、壁部６ｅに配置されてＸ軸方向に開口する。第２開口孔６ｃは、壁部６ｅを略径方向に貫通する。図示を省略するが、Ｘ軸方向から見て、第２開口孔６ｃは長円形状である。第２開口孔６ｃは、Ｙ軸方向に延びる長円形状である。つまり、Ｘ軸方向から見て、第２開口孔６ｃは、Ｚ軸方向の開口寸法（内寸）よりもＹ軸方向の開口寸法が大きい。 The second opening 6c is disposed in the wall 6e and opens in the X-axis direction. The second opening hole 6c penetrates the wall 6e in the substantially radial direction. Although not shown, the second opening 6c has an oval shape when viewed from the X-axis direction. The second opening hole 6c has an oval shape extending in the Y-axis direction. That is, when viewed from the X-axis direction, the second opening hole 6c has a larger opening dimension in the Y-axis direction than the opening dimension (inner dimension) in the Z-axis direction.
　作業用孔部６ｊは、頂壁部６ｈに配置されてＺ軸方向に開口する。図示を省略するが、Ｚ軸方向から見て、作業用孔部６ｊは長円形状である。作業用孔部６ｊは、Ｙ軸方向に延びる長円形状である。つまり、Ｚ軸方向から見て、作業用孔部６ｊは、Ｘ軸方向の開口寸法（内寸）よりもＹ軸方向の開口寸法が大きい。作業用孔部６ｊには、ハウジング６の外部から内部へ向けて、作業用工具等が挿入される。 The work hole 6j is disposed in the top wall 6h and opens in the Z-axis direction. Although not shown, the working hole 6j has an oval shape when viewed from the Z-axis direction. The working hole 6j has an oval shape extending in the Y-axis direction. That is, when viewed from the Z-axis direction, the working hole 6j has an opening dimension in the Y-axis direction larger than an opening dimension (inner dimension) in the X-axis direction. A working tool or the like is inserted into the working hole 6j from the outside to the inside of the housing 6.
　図２に示すように、ギヤ収容部６ｂは、軸方向から見てモータ収容部６ａに対し径方向に張り出す張出部６ｄを有する。本実施形態において、張出部６ｄは、モータ収容部６ａに対し車両後方側および下側に張り出す。張出部６ｄは、ギヤ部３の一部を収容する。具体的に、張出部６ｄ内には、第２のギヤ４２の一部、第３のギヤ４３の一部およびリングギヤ５１の一部が収容される。張出部６ｄには、車軸通過孔６１ｅが設けられる。車軸通過孔６１ｅは、張出部６ｄをＹ軸方向に貫通する。図１に示すように、車軸通過孔６１ｅは、張出部６ｄのＹ軸方向の両端部に位置する一対の壁部にそれぞれ設けられる。車軸通過孔６１ｅには、車軸５５が挿入される。 As shown in FIG. 2, the gear housing portion 6b has an overhang portion 6d that projects in the radial direction with respect to the motor housing portion 6a when viewed from the axial direction. In the present embodiment, the overhanging portion 6d overhangs the vehicle rear side and the lower side with respect to the motor housing portion 6a. The overhang portion 6 d accommodates a part of the gear portion 3. Specifically, a part of the second gear 42, a part of the third gear 43, and a part of the ring gear 51 are accommodated in the overhanging portion 6d. The overhang portion 6d is provided with an axle passage hole 61e. The axle passage hole 61e penetrates the overhanging portion 6d in the Y-axis direction. As shown in FIG. 1, the axle passage hole 61e is provided in each of a pair of wall portions located at both ends in the Y-axis direction of the overhang portion 6d. The axle 55 is inserted into the axle passage hole 61e.
　インバータ７は、モータ２と電気的に接続される。インバータ７は、モータ２に電力を供給する。インバータ７は、バスバー９を介してステータ３０と電気的に接続され、ステータ３０に電力を供給する。インバータ７は、モータ２に供給される電流を制御する。インバータ７は、回路基板と、コンデンサとを有する。 The inverter 7 is electrically connected to the motor 2. The inverter 7 supplies electric power to the motor 2. The inverter 7 is electrically connected to the stator 30 via the bus bar 9 and supplies power to the stator 30. The inverter 7 controls the current supplied to the motor 2. The inverter 7 has a circuit board and a capacitor.
　図２に示すように、インバータケース８は略直方体状の容器である。インバータケース８は、例えばアルミ合金等の金属製である。ただし、インバータケース８は、樹脂製であってもよい。インバータケース８には、インバータ７が収容される。インバータケース８は、モータ収容部６ａとモータ軸Ｊ２の径方向に隣り合って配置される。インバータケース８とモータ収容部６ａとは、水平方向に隣り合う。インバータケース８は、有底筒状のケース本体８ｄと、ケース本体８ｄの上側開口を塞ぐケース蓋部８ｅと、を有する。 As shown in FIG. 2, the inverter case 8 is a substantially rectangular parallelepiped container. The inverter case 8 is made of a metal such as an aluminum alloy, for example. However, the inverter case 8 may be made of resin. An inverter 7 is accommodated in the inverter case 8. The inverter case 8 is arranged adjacent to the motor housing portion 6a and the motor shaft J2 in the radial direction. The inverter case 8 and the motor housing 6a are adjacent to each other in the horizontal direction. The inverter case 8 has a bottomed cylindrical case body 8d and a case lid 8e that closes the upper opening of the case body 8d.
　図３に示すように、ケース本体８ｄは、モータ収容部６ａに対向する壁部８ｂと、壁部８ｂをＸ軸方向に貫通する第１開口孔８ｃと、ケース鍔部８ａと、を有する。つまりインバータケース８は、第１開口孔８ｃを有する。 As shown in FIG. 3, the case main body 8d includes a wall portion 8b facing the motor housing portion 6a, a first opening hole 8c penetrating the wall portion 8b in the X-axis direction, and a case flange portion 8a. That is, the inverter case 8 has the first opening hole 8c.
　第１開口孔８ｃは、壁部８ｂに配置されてＸ軸方向に開口する。第１開口孔８ｃは、壁部８ｂを略径方向に貫通する。図示を省略するが、Ｘ軸方向から見て、第１開口孔８ｃは長円形状である。第１開口孔８ｃは、Ｙ軸方向に延びる長円形状である。つまり、Ｘ軸方向から見て、第１開口孔８ｃは、Ｚ軸方向の開口寸法（内寸）よりもＹ軸方向の開口寸法が大きい。 The first opening hole 8c is disposed in the wall portion 8b and opens in the X-axis direction. The first opening hole 8c penetrates the wall portion 8b in the substantially radial direction. Although not shown, the first opening 8c has an oval shape when viewed from the X-axis direction. The first opening hole 8c has an oval shape extending in the Y-axis direction. That is, when viewed from the X-axis direction, the first opening hole 8c has a larger opening dimension in the Y-axis direction than the opening dimension (inner dimension) in the Z-axis direction.
　第１開口孔８ｃは、後述する第１方向（本実施形態ではＸ軸方向）において第２開口孔６ｃと対向配置される。つまり第２開口孔６ｃは、第１開口孔８ｃと第１方向に対向する。本実施形態の例では、第１開口孔８ｃのＸ軸に垂直な断面の形状と、第２開口孔６ｃのＸ軸に垂直な断面の形状とが、互いに略同一である。Ｘ軸方向から見て、第１開口孔８ｃの形状（内周の輪郭）と第２開口孔６ｃの形状とは、互いに略一致する。 The first opening hole 8c is disposed opposite to the second opening hole 6c in a first direction (X-axis direction in the present embodiment) which will be described later. That is, the second opening hole 6c faces the first opening hole 8c in the first direction. In the example of this embodiment, the shape of the cross section perpendicular to the X axis of the first opening hole 8c and the shape of the cross section perpendicular to the X axis of the second opening hole 6c are substantially the same. When viewed from the X-axis direction, the shape of the first opening hole 8c (the inner peripheral contour) and the shape of the second opening hole 6c substantially coincide with each other.
　ケース鍔部８ａは、壁部８ｂの上端部からＸ軸方向に突出する板状である。本実施形態の例では、ケース鍔部８ａが、壁部８ｂの上端部にＹ軸方向に互いに等間隔をあけて複数設けられる（図５を参照）。ケース鍔部８ａの板面は、Ｚ軸方向を向く。ケース鍔部８ａには、ケース鍔部８ａをＺ軸方向に貫通するネジ挿入孔８ｆが設けられる。 The case flange 8a has a plate shape protruding in the X-axis direction from the upper end of the wall 8b. In the example of the present embodiment, a plurality of case flanges 8a are provided at the upper end of the wall 8b at equal intervals in the Y-axis direction (see FIG. 5). The plate surface of the case flange 8a faces the Z-axis direction. The case flange 8a is provided with a screw insertion hole 8f that penetrates the case flange 8a in the Z-axis direction.
　固定部材６ｆは、ネジ挿入孔８ｆに挿入される。本実施形態において、固定部材６ｆはボルト等のネジ部材である。固定部材６ｆは、Ｚ軸方向に延びる。固定部材６ｆは、モータ収容部６ａの頂壁部６ｈのネジ穴６ｉに締め込まれる。ネジ穴６ｉは、頂壁部６ｈに設けられて上側に開口する。固定部材６ｆは、ハウジング６に対してＺ軸方向に締め込まれる。固定部材６ｆは、複数設けられる。固定部材６ｆは、Ｙ軸方向に互いに等間隔をあけて配置される複数のネジ挿入孔８ｆに、それぞれ挿入される。インバータケース８は、固定部材６ｆ等を用いてハウジング６に固定される。つまり固定部材６ｆは、インバータケース８とハウジング６とを固定する。インバータケース８は、モータ収容部６ａの径方向外側を向く外周面に固定される。 The fixing member 6f is inserted into the screw insertion hole 8f. In the present embodiment, the fixing member 6f is a screw member such as a bolt. The fixing member 6f extends in the Z-axis direction. The fixing member 6f is tightened into the screw hole 6i of the top wall portion 6h of the motor housing portion 6a. The screw hole 6i is provided in the top wall portion 6h and opens upward. The fixing member 6f is fastened to the housing 6 in the Z-axis direction. A plurality of fixing members 6f are provided. The fixing member 6f is inserted into a plurality of screw insertion holes 8f arranged at equal intervals in the Y-axis direction. The inverter case 8 is fixed to the housing 6 using a fixing member 6f or the like. That is, the fixing member 6 f fixes the inverter case 8 and the housing 6. The inverter case 8 is fixed to the outer peripheral surface facing the radially outer side of the motor housing portion 6a.
　バスバー９は、モータ２とインバータ７とを接続する。バスバー９は、ステータ３０とインバータ７とを電気的に接続する。本実施形態では、バスバー９が板状である。バスバー９の一対の板面（表面および裏面）は、Ｚ軸方向を向く。なお、バスバー９は、例えば断面円形等の棒状でもよい。図４に示すように、バスバー９は複数設けられる。複数のバスバー９は、後述する第１方向（Ｘ軸方向）に直交する方向に、互いに間隔をあけて配列する。本実施形態では、バスバー９が後述する第３方向（Ｙ軸方向）に並んで複数（３つ）設けられる。３つのバスバー９に流れる電流は互いに位相が異なる。３つのバスバー９に流れる各電流の位相は、Ｕ相、Ｖ相またはＷ相である。 The bus bar 9 connects the motor 2 and the inverter 7. Bus bar 9 electrically connects stator 30 and inverter 7. In the present embodiment, the bus bar 9 has a plate shape. A pair of plate surfaces (front surface and back surface) of the bus bar 9 face the Z-axis direction. The bus bar 9 may have a rod shape having a circular cross section, for example. As shown in FIG. 4, a plurality of bus bars 9 are provided. The plurality of bus bars 9 are arranged at intervals from each other in a direction orthogonal to a first direction (X-axis direction) described later. In the present embodiment, a plurality (three) of bus bars 9 are provided side by side in a third direction (Y-axis direction) described later. The currents flowing through the three bus bars 9 have different phases. The phase of each current flowing through the three bus bars 9 is the U phase, the V phase, or the W phase.
　ステータ３０の配線部材３３の数は、バスバー９の数と同一であり、本実施形態では複数である。図示を省略するが、複数の配線部材３３は、第１方向（Ｘ軸方向）に直交する方向に、互いに間隔をあけて配列する。配線部材３３は、Ｙ軸方向に並んで３つ設けられる。配線部材３３は、モータ２の配線部材である。配線部材３３は、バスバー９とは別の配線部材である。配線部材３３は、例えば板状のバスバーである。つまり配線部材３３は、板状である。配線部材３３は、バスバー９と電気的に接続される。配線部材３３の板面は、バスバー９の板面と接触する。つまり配線部材３３は、バスバー９と接触する。 The number of the wiring members 33 of the stator 30 is the same as the number of the bus bars 9, and in this embodiment, there are a plurality. Although not shown, the plurality of wiring members 33 are arranged at intervals from each other in a direction orthogonal to the first direction (X-axis direction). Three wiring members 33 are provided side by side in the Y-axis direction. The wiring member 33 is a wiring member of the motor 2. The wiring member 33 is a wiring member different from the bus bar 9. The wiring member 33 is, for example, a plate-like bus bar. That is, the wiring member 33 has a plate shape. The wiring member 33 is electrically connected to the bus bar 9. The plate surface of the wiring member 33 is in contact with the plate surface of the bus bar 9. That is, the wiring member 33 is in contact with the bus bar 9.
　図３において、バスバー９は、第１延伸部９ａと、第２延伸部９ｂと、貫通孔９ｃと、端部９ｄと、を有する。第１延伸部９ａは、バスバー９において第１方向に延びる部分である。第２延伸部９ｂは、バスバー９において第１方向とは異なる方向に延びる部分である。つまりバスバー９は、第１方向に延びる部分と、第１方向とは異なる方向に延びる部分と、を有する。なお「第１方向とは異なる方向」とは、第１方向と交差する方向である。本実施形態では、第１延伸部９ａが、バスバー９において互いに離れて一対設けられる。第２延伸部９ｂは、一対の第１延伸部９ａ同士の間に配置されて、一対の第１延伸部９ａ同士を繋ぐ。本実施形態において、第１方向は、Ｘ軸方向である。第１延伸部９ａは、Ｘ軸方向に延びる。第２延伸部９ｂは、Ｘ軸方向に向かうにしたがい、Ｚ軸方向に向けて傾斜して延びる。 In FIG. 3, the bus bar 9 has a first extending portion 9a, a second extending portion 9b, a through hole 9c, and an end portion 9d. The first extending portion 9 a is a portion that extends in the first direction in the bus bar 9. The second extending portion 9 b is a portion that extends in a direction different from the first direction in the bus bar 9. That is, the bus bar 9 has a portion extending in the first direction and a portion extending in a direction different from the first direction. The “direction different from the first direction” is a direction intersecting the first direction. In the present embodiment, a pair of first extending portions 9 a are provided apart from each other in the bus bar 9. The 2nd extending | stretching part 9b is arrange | positioned between a pair of 1st extending | stretching parts 9a, and connects a pair of 1st extending | stretching parts 9a. In the present embodiment, the first direction is the X-axis direction. The first extending portion 9a extends in the X axis direction. The second extending portion 9b extends while inclining in the Z-axis direction as it goes in the X-axis direction.
　以下の説明では、第１方向のうち、第１開口孔８ｃから第２開口孔６ｃへ向かう方向を、第１方向一方側と呼ぶ。具体的に、第１方向一方側は、＋Ｘ方向である。第１方向のうち、第２開口孔６ｃから第１開口孔８ｃへ向かう方向を、第１方向他方側と呼ぶ。具体的に、第１方向他方側は、－Ｘ方向である。また、第１方向に直交する方向のうち上下方向を、第２方向と呼ぶ。つまり第２方向は、第１方向と直交する。第２方向は、Ｚ軸方向である。また、第１方向に直交する方向のうち左右方向を、第３方向と呼ぶ。第３方向は、Ｙ軸方向である。第１方向、第２方向および第３方向のうち、１つの方向は、他の２つの方向と直交する。 In the following description, a direction from the first opening hole 8c toward the second opening hole 6c in the first direction is referred to as a first direction one side. Specifically, one side in the first direction is the + X direction. Of the first direction, the direction from the second opening hole 6c toward the first opening hole 8c is referred to as the other side in the first direction. Specifically, the other side in the first direction is the −X direction. Moreover, the up-down direction among the directions orthogonal to the first direction is referred to as a second direction. That is, the second direction is orthogonal to the first direction. The second direction is the Z-axis direction. The left-right direction among the directions orthogonal to the first direction is referred to as a third direction. The third direction is the Y-axis direction. Of the first direction, the second direction, and the third direction, one direction is orthogonal to the other two directions.
　バスバー９は、第１開口孔８ｃに通される。バスバー９は、第１開口孔８ｃを通して、インバータケース８の内部と外部とにわたって延びる。端部９ｄは、バスバー９の第１方向一方側の端部である。バスバー９の第１方向一方側の端部９ｄは、第１開口孔８ｃよりも第１方向一方側に突出する。すなわち、バスバー９の第１方向一方側の端部９ｄは、インバータケース８の外部に位置する。バスバー９の第１方向他方側の端部は、第１開口孔８ｃよりも第１方向他方側に突出する。すなわち、バスバー９の第１方向他方側の端部は、インバータケース８の内部に位置する。バスバー９は、後述する第１連結部材１０に支持される。バスバー９は、第１連結部材１０を介してインバータケース８に固定される。 The bus bar 9 is passed through the first opening 8c. The bus bar 9 extends over the inside and the outside of the inverter case 8 through the first opening hole 8c. The end portion 9d is an end portion on one side of the bus bar 9 in the first direction. An end portion 9d on one side in the first direction of the bus bar 9 protrudes to one side in the first direction from the first opening hole 8c. That is, the end 9 d on the one side in the first direction of the bus bar 9 is located outside the inverter case 8. The end of the bus bar 9 on the other side in the first direction protrudes to the other side in the first direction from the first opening hole 8c. That is, the end of the bus bar 9 on the other side in the first direction is located inside the inverter case 8. The bus bar 9 is supported by a first connecting member 10 described later. The bus bar 9 is fixed to the inverter case 8 via the first connecting member 10.
　バスバー９は第２開口孔６ｃに通される。バスバー９は、インバータケース８と固定された状態で、第２開口孔６ｃに通される。バスバー９は第２開口孔６ｃに挿入される。バスバー９は、第２開口孔６ｃを通して、モータ収容部６ａ（ハウジング６）の内部と外部とにわたって延びる。バスバー９の第１方向一方側の端部９ｄは、第２開口孔６ｃよりも第１方向一方側に突出する。すなわち、バスバー９の第１方向一方側の端部９ｄは、ハウジング６の内部に位置する。バスバー９の第１方向一方側の端部９ｄと、配線部材３３の第１方向他方側の端部３３ｂとは、第２方向（Ｚ軸方向）に互いに重なる。バスバー９の第１方向一方側の端部９ｄにおいて＋Ｚ方向を向く板面と、配線部材３３の第１方向他方側の端部３３ｂにおいて－Ｚ方向を向く板面とは、第２方向において互いに接触する。つまりバスバー９の第１方向一方側の端部９ｄの板面と配線部材３３の第１方向他方側の端部３３ｂの板面とは、互いに接触する。以下の説明では、第２方向のうち、バスバー９の第１方向一方側の端部９ｄから配線部材３３の第１方向他方側の端部３３ｂへ向かう方向（＋Ｚ方向）を第２方向一方側と呼び、配線部材３３の第１方向他方側の端部３３ｂからバスバー９の第１方向一方側の端部９ｄへ向かう方向（－Ｚ方向）を第２方向他方側と呼ぶ。バスバー９の第１方向他方側の端部は、第２開口孔６ｃよりも第１方向他方側に突出する。すなわち、バスバー９の第１方向他方側の端部はハウジング６の外部に位置する。バスバー９は後述する第２連結部材１４に通されて、ハウジング６内に挿入される。バスバー９は第２連結部材１４の後述するガイド筒部１４ａ内に挿入される。 The bus bar 9 is passed through the second opening 6c. The bus bar 9 is passed through the second opening 6c while being fixed to the inverter case 8. The bus bar 9 is inserted into the second opening hole 6c. The bus bar 9 extends through the second opening hole 6c over the inside and the outside of the motor housing portion 6a (housing 6). The end 9d on the one side in the first direction of the bus bar 9 protrudes to the one side in the first direction from the second opening hole 6c. That is, the end 9 d on the one side in the first direction of the bus bar 9 is located inside the housing 6. The end 9d on one side in the first direction of the bus bar 9 and the end 33b on the other side in the first direction of the wiring member 33 overlap each other in the second direction (Z-axis direction). The plate surface facing the + Z direction at the end portion 9d on one side in the first direction of the bus bar 9 and the plate surface facing the −Z direction at the end portion 33b on the other side in the first direction of the wiring member 33 are mutually in the second direction. Contact. That is, the plate surface of the end portion 9d on one side in the first direction of the bus bar 9 and the plate surface of the end portion 33b on the other side in the first direction of the wiring member 33 are in contact with each other. In the following description, in the second direction, the direction (+ Z direction) from the end 9d on one side in the first direction of the bus bar 9 toward the end 33b on the other side in the first direction of the wiring member 33 is defined as one side in the second direction. The direction (−Z direction) from the end 33b on the other side in the first direction of the wiring member 33 toward the end 9d on the one side in the first direction of the bus bar 9 is referred to as the other side in the second direction. The end of the bus bar 9 on the other side in the first direction protrudes to the other side in the first direction from the second opening 6c. That is, the end of the bus bar 9 on the other side in the first direction is located outside the housing 6. The bus bar 9 is inserted into the housing 6 through a second connecting member 14 described later. The bus bar 9 is inserted into a later-described guide tube portion 14 a of the second connecting member 14.
　本実施形態の例では、一対の第１延伸部９ａのうち、第１方向一方側に位置する一方の第１延伸部９ａが、第１方向に直交する方向から見て、第２開口孔６ｃと重なって配置される。一対の第１延伸部９ａのうち、第１方向他方側に位置する他方の第１延伸部９ａ、および第２延伸部９ｂが、第１方向に直交する方向から見て、第１開口孔８ｃと重なって配置される。 In the example of the present embodiment, of the pair of first extending portions 9a, one first extending portion 9a located on one side in the first direction is viewed from the direction orthogonal to the first direction, and the second opening 6c. It is arranged overlapping. Of the pair of first extending portions 9a, the other first extending portion 9a and the second extending portion 9b located on the other side in the first direction are the first opening holes 8c as viewed from the direction orthogonal to the first direction. It is arranged overlapping.
　貫通孔９ｃは、バスバー９に形成される。貫通孔９ｃは、バスバー９をＺ軸方向に貫通して、バスバー９の一対の板面に開口する。貫通孔９ｃは、バスバー９の第１方向一方側の端部９ｄに配置される。貫通孔９ｃは、一対の第１延伸部９ａのうち、第１方向一方側に位置する一方の第１延伸部９ａに設けられる。 The through hole 9 c is formed in the bus bar 9. The through hole 9 c penetrates the bus bar 9 in the Z-axis direction and opens on a pair of plate surfaces of the bus bar 9. The through hole 9 c is disposed at the end 9 d on the one side in the first direction of the bus bar 9. The through-hole 9c is provided in one first extending portion 9a located on one side in the first direction among the pair of first extending portions 9a.
　Ｚ軸方向から見て、貫通孔９ｃは、配線部材３３の貫通孔３３ａと重なって配置される。貫通孔９ｃおよび貫通孔３３ａには、配線ネジ部１８が通される。配線ネジ部１８は、Ｚ軸方向に延びるネジ部材である。配線ネジ部１８は、後述するナット部１９に締め込まれる。バスバー９と配線部材３３とは、配線ネジ部１８およびナット部１９にＺ軸方向から挟まれて、互いに固定される。つまり配線ネジ部１８は、バスバー９と、モータ２の配線部材３３とを接続する。 When viewed from the Z-axis direction, the through hole 9 c is disposed so as to overlap the through hole 33 a of the wiring member 33. The wiring screw portion 18 is passed through the through hole 9c and the through hole 33a. The wiring screw portion 18 is a screw member extending in the Z-axis direction. The wiring screw portion 18 is fastened to a nut portion 19 described later. The bus bar 9 and the wiring member 33 are sandwiched between the wiring screw portion 18 and the nut portion 19 from the Z-axis direction, and are fixed to each other. That is, the wiring screw portion 18 connects the bus bar 9 and the wiring member 33 of the motor 2.
　配線ネジ部１８のネジ軸ＳＡは、第１方向に直交する方向に延びる。具体的に、ネジ軸ＳＡは、第２方向（Ｚ軸方向）に延びる。本実施形態によれば、バスバー９の構造を複雑にすることなく、バスバー９とモータ２の配線部材３３とを接続できる。なお、配線ネジ部１８のネジ軸ＳＡは、後述する作業用孔部６ｊの中心軸ＨＡに沿って延びてもよい。この場合、バスバー９の第１方向一方側の端部９ｄにおいて、一対の板面は中心軸ＨＡ方向を向き、貫通孔９ｃは中心軸ＨＡ方向に開口する。この場合、作業用工具等により、作業用孔部６ｊを通して配線ネジ部１８を安定して締め込むことができる。 The screw shaft SA of the wiring screw portion 18 extends in a direction orthogonal to the first direction. Specifically, the screw shaft SA extends in the second direction (Z-axis direction). According to this embodiment, the bus bar 9 and the wiring member 33 of the motor 2 can be connected without complicating the structure of the bus bar 9. The screw shaft SA of the wiring screw portion 18 may extend along the center axis HA of a work hole 6j described later. In this case, at the end 9d on one side in the first direction of the bus bar 9, the pair of plate surfaces face the central axis HA direction, and the through hole 9c opens in the central axis HA direction. In this case, the wiring screw portion 18 can be stably tightened through the work hole 6j with a work tool or the like.
　第１方向に直交する方向から見て、固定部材６ｆとバスバー９とは、重なって配置される。具体的には、第２方向（Ｚ軸方向）から見て、固定部材６ｆとバスバー９とが、重なって配置される。第２方向から見て、第１方向一方側に位置する一方の第１延伸部９ａと、固定部材６ｆとが重なる。 When viewed from the direction orthogonal to the first direction, the fixing member 6f and the bus bar 9 are arranged to overlap each other. Specifically, when viewed from the second direction (Z-axis direction), the fixing member 6f and the bus bar 9 are arranged to overlap each other. When viewed from the second direction, one first extending portion 9a located on one side in the first direction overlaps with the fixing member 6f.
　ハウジング６の作業用孔部６ｊは、バスバー９に向けて開口する。作業用孔部６ｊは、一対の第１延伸部９ａのうち、第１方向一方側に位置する一方の第１延伸部９ａに向けて開口する。作業用孔部６ｊは、ハウジング６において貫通孔９ｃに向けて開口する。本実施形態によれば、作業用工具等を用いて、作業用孔部６ｊからバスバー９の貫通孔９ｃに配線ネジ部１８を通して、ナット部１９に締め込むことにより、ハウジング６の内部において、バスバー９と配線部材３３とを接続できる。 The working hole 6 j of the housing 6 opens toward the bus bar 9. The working hole 6j opens toward one first extending portion 9a located on one side in the first direction of the pair of first extending portions 9a. The working hole 6j opens in the housing 6 toward the through hole 9c. According to the present embodiment, by using the working tool or the like, the wiring screw portion 18 is passed from the working hole portion 6j to the through hole 9c of the bus bar 9 and is tightened to the nut portion 19, whereby the bus bar is formed inside the housing 6. 9 and the wiring member 33 can be connected.
　作業用孔部６ｊは、第１方向に直交する方向（本実施形態では第２方向）に向かうにしたがい、第１方向に向けて傾斜して延びる。作業用孔部６ｊは、第１方向に直交する方向においてバスバー９に近づくにしたがい（本実施形態では下側に向かうにしたがい）、第１方向他方側に向けて傾斜して延びる。すなわち、作業用孔部６ｊの中心軸ＨＡは、第１方向に直交する方向に向かうにしたがい、第１方向に向けて傾斜して延びる。中心軸ＨＡは、第１方向に直交する方向においてバスバー９に近づくにしたがい、第１方向他方側に向けて傾斜して延びる。 The working hole 6j extends incline toward the first direction as it goes in a direction orthogonal to the first direction (second direction in the present embodiment). The working hole 6j extends inclining toward the other side in the first direction as it approaches the bus bar 9 in a direction orthogonal to the first direction (in the present embodiment, as it goes downward). That is, the central axis HA of the working hole 6j extends in an inclined manner toward the first direction as it goes in the direction orthogonal to the first direction. As the center axis HA approaches the bus bar 9 in the direction orthogonal to the first direction, the central axis HA extends while inclining toward the other side in the first direction.
　本実施形態によれば、第３方向（Ｙ軸方向）に互いに等間隔に配置される複数の固定部材６ｆにより、インバータケース８とハウジング６とを安定して固定できる。そして、作業用孔部６ｊに作業用工具等を挿入して、ハウジング６内においてバスバー９とモータ２の配線部材３３とを接続できる。すなわち、作業用孔部６ｊが、第２方向に対して傾斜してバスバー９に向けて延びているので、インバータケース８とハウジング６との固定部材６ｆによる固定状態（固定強度）を阻害することなく、バスバー９と配線部材３３とを接続できる。 According to the present embodiment, the inverter case 8 and the housing 6 can be stably fixed by the plurality of fixing members 6f arranged at equal intervals in the third direction (Y-axis direction). Then, a work tool or the like is inserted into the work hole 6 j so that the bus bar 9 and the wiring member 33 of the motor 2 can be connected in the housing 6. That is, the working hole 6j is inclined toward the second direction and extends toward the bus bar 9, so that the fixing state (fixing strength) of the inverter case 8 and the housing 6 by the fixing member 6f is hindered. The bus bar 9 and the wiring member 33 can be connected.
　詳しくは、例えば本実施形態とは異なり、作業用孔部６ｊが第２方向（Ｚ軸方向）に沿って延びる場合には、下記の課題が生じる。第２方向から見て、固定部材６ｆをバスバー９と重なる位置に配置できないことがある。すなわち、作業用孔部６ｊの配置を優先すると、固定部材６ｆを所望の位置に配置できず、インバータケース８とハウジング６との固定状態が不安定になる（固定強度が確保できない）ことがある。また、固定部材６ｆの配置を優先して、インバータケース８とハウジング６との固定強度を確保しようとすると、作業用孔部６ｊおよびバスバー９を、第２方向から見て固定部材６ｆと重ならない位置まで移動させて配置しなければならない。このため、モータユニット１の外形が第３方向（モータ軸Ｊ２の軸方向）に大きくなったり、部材の配置の自由度が減る。これに対し、本実施形態によれば、固定部材６ｆを所望の位置に配置して、インバータケース８とハウジング６との固定状態を安定させつつ（固定強度を確保しつつ）、モータユニット１の外形をコンパクトに抑えて、部材の配置の自由度を確保できる。そして、作業用孔部６ｊを通してバスバー９をモータ２の配線部材３３と接続できる。なお、本実施形態では、作業用孔部６ｊが、第２方向に沿ってバスバー９に近づくにしたがい第１方向他方側に位置する傾斜孔であるので、ハウジング６において作業用孔部６ｊを配置しやすい。 Specifically, for example, unlike the present embodiment, when the work hole 6j extends along the second direction (Z-axis direction), the following problems occur. When viewed from the second direction, the fixing member 6f may not be disposed at a position overlapping the bus bar 9. That is, if priority is given to the arrangement of the working hole 6j, the fixing member 6f cannot be arranged at a desired position, and the fixing state between the inverter case 8 and the housing 6 may become unstable (fixing strength cannot be secured). . In addition, if priority is given to the arrangement of the fixing member 6f to secure the fixing strength between the inverter case 8 and the housing 6, the working hole 6j and the bus bar 9 do not overlap the fixing member 6f when viewed from the second direction. Must be moved to position. For this reason, the outer shape of the motor unit 1 increases in the third direction (the axial direction of the motor shaft J2), and the degree of freedom of arrangement of members decreases. On the other hand, according to the present embodiment, the fixing member 6f is arranged at a desired position to stabilize the fixing state between the inverter case 8 and the housing 6 (while ensuring the fixing strength), The outer shape can be kept compact, and the degree of freedom of arrangement of members can be secured. The bus bar 9 can be connected to the wiring member 33 of the motor 2 through the working hole 6j. In the present embodiment, since the work hole 6j is an inclined hole located on the other side in the first direction as it approaches the bus bar 9 along the second direction, the work hole 6j is disposed in the housing 6. It's easy to do.
　蓋部１７は、板状である。第２方向（Ｚ軸方向）から見て、蓋部１７は、第３方向（Ｙ軸方向）に延びる長円形状である。第２方向から見て、蓋部１７は、第３方向を長軸とし、第１方向（Ｘ軸方向）を短軸とする長円形状である。蓋部１７は、作業用孔部６ｊを塞ぐ。蓋部１７は、頂壁部６ｈに設けられて、作業用孔部６ｊの上側の開口を塞ぐ。本実施形態によれば、作業用孔部６ｊを通してバスバー９を配線作業した後、蓋部１７によって作業用孔部６ｊを塞ぐことができる。作業用孔部６ｊを通して、ハウジング６の外部から内部に水等の液体および異物などが入ることや、ハウジング６の内部から外部へオイルＯ等が漏れ出すことを、蓋部１７により抑制できる。 The lid portion 17 has a plate shape. When viewed from the second direction (Z-axis direction), the lid portion 17 has an oval shape extending in the third direction (Y-axis direction). When viewed from the second direction, the lid portion 17 has an oval shape having the third direction as a major axis and the first direction (X-axis direction) as a minor axis. The lid portion 17 closes the work hole 6j. The lid portion 17 is provided on the top wall portion 6h and closes the upper opening of the working hole portion 6j. According to the present embodiment, after the bus bar 9 is wired through the work hole 6j, the work hole 6j can be closed by the lid 17. Through the work hole 6j, the lid 17 can prevent liquid such as water and foreign matter from entering the inside of the housing 6 from inside and leakage of the oil O from the inside of the housing 6 to the outside.
　第１連結部材１０は、樹脂製である。第１連結部材１０は、例えばエラストマー成分を含有するＰＰＳ樹脂等からなる。第１連結部材１０は、単一の部材により構成される。第１連結部材１０は、例えば、バスバー９の材料と略同じ熱膨張率（熱膨張係数）を有する材料等からなる。 The first connecting member 10 is made of resin. The first connecting member 10 is made of, for example, a PPS resin containing an elastomer component. The first connecting member 10 is constituted by a single member. The 1st connection member 10 consists of material etc. which have the thermal expansion coefficient (thermal expansion coefficient) substantially the same as the material of the bus bar 9, for example.
　図３および図４に示すように、第１連結部材１０は、インバータケース８に取り付けられて、第１開口孔８ｃを塞ぐ。第１連結部材１０は、ケース本体８ｄの壁部８ｂに取り付けられて、第１開口孔８ｃの第１方向一方側の開口を塞ぐ。第１連結部材１０は、第１方向においてインバータケース８と接触する。第１連結部材１０は、後述する複数の第１ネジ部材１５により、インバータケース８に固定される。つまり第１連結部材１０は、インバータケース８に固定されて第１開口孔８ｃを塞ぐ。第１連結部材１０は、第１方向においてインバータケース８とハウジング６との間に位置し、第１開口孔８ｃに設けられる。 3 and 4, the first connecting member 10 is attached to the inverter case 8 and closes the first opening hole 8c. The first connecting member 10 is attached to the wall portion 8b of the case body 8d and closes the opening on the one side in the first direction of the first opening hole 8c. The first connecting member 10 contacts the inverter case 8 in the first direction. The first connecting member 10 is fixed to the inverter case 8 by a plurality of first screw members 15 described later. That is, the first connecting member 10 is fixed to the inverter case 8 and closes the first opening hole 8c. The first connecting member 10 is located between the inverter case 8 and the housing 6 in the first direction, and is provided in the first opening hole 8c.
　図３、図４、図６および図７に示すように、第１連結部材１０は、バスバー９を支持する。本実施形態では、第１連結部材１０が、バスバー９の一部と樹脂インサート成形される。バスバー９は、第１連結部材１０に固定される。第１連結部材１０において、バスバー９は、第１方向に直交する方向（本実施形態では第３方向）に互いに間隔をあけて、複数設けられる。バスバー９は、ハウジング６の第２開口孔６ｃに挿入されて、モータ２のステータ３０と接続される。 As shown in FIGS. 3, 4, 6, and 7, the first connecting member 10 supports the bus bar 9. In the present embodiment, the first connecting member 10 is resin-insert molded with a part of the bus bar 9. The bus bar 9 is fixed to the first connecting member 10. In the first connecting member 10, a plurality of bus bars 9 are provided at intervals in a direction orthogonal to the first direction (a third direction in the present embodiment). The bus bar 9 is inserted into the second opening hole 6 c of the housing 6 and connected to the stator 30 of the motor 2.
　ここで、本実施形態のモータユニット１の製造方法について説明する。モータユニット１の製造方法は、インバータ７が収容されるインバータケース８の第１開口孔８ｃに、バスバー９を通し、インバータケース８の外面からバスバー９の一部を突出させて、インバータケース８にバスバー９を固定する工程と、モータ２が収容されるハウジング６の第２開口孔６ｃに、バスバー９の一部を挿入する工程と、ハウジング６内において、バスバー９とモータ２とを接続する工程と、を含む。また、インバータケース８にバスバー９を固定する工程では、バスバー９を支持する第１連結部材１０をインバータケース８に固定して、第１連結部材１０により第１開口孔８ｃを塞ぐ。本実施形態では、インバータケース８にバスバー９を固定する工程において、バスバー９の一部（バスバー９のうち第１方向一方側に位置する部分）が、ケース本体８ｄの壁部８ｂから第１方向一方側に突出させられる。バスバー９の一部を挿入する工程では、バスバー９の一部が、第２開口孔６ｃ内に第１方向一方側へ向けて挿入される。バスバー９とモータ２とを接続する工程では、バスバー９と、ステータ３０の配線部材３３とが、作業用孔部６ｊから挿入される作業用工具等を用いて接続される。すなわち、バスバー９と配線部材３３とが、ハウジング６に開口する作業用孔部６ｊを通して、配線ネジ部１８およびナット部１９により接続される。 Here, the manufacturing method of the motor unit 1 of the present embodiment will be described. The motor unit 1 is manufactured by passing the bus bar 9 through the first opening 8 c of the inverter case 8 in which the inverter 7 is accommodated and projecting a part of the bus bar 9 from the outer surface of the inverter case 8. A step of fixing the bus bar 9, a step of inserting a part of the bus bar 9 into the second opening hole 6c of the housing 6 in which the motor 2 is accommodated, and a step of connecting the bus bar 9 and the motor 2 in the housing 6 And including. In the step of fixing the bus bar 9 to the inverter case 8, the first connecting member 10 that supports the bus bar 9 is fixed to the inverter case 8, and the first opening 8 c is closed by the first connecting member 10. In the present embodiment, in the step of fixing the bus bar 9 to the inverter case 8, a part of the bus bar 9 (a part of the bus bar 9 located on one side in the first direction) is separated from the wall 8b of the case body 8d in the first direction. Projected to one side. In the step of inserting a part of the bus bar 9, a part of the bus bar 9 is inserted into the second opening hole 6c toward one side in the first direction. In the step of connecting the bus bar 9 and the motor 2, the bus bar 9 and the wiring member 33 of the stator 30 are connected using a work tool or the like inserted from the work hole 6j. That is, the bus bar 9 and the wiring member 33 are connected to each other by the wiring screw portion 18 and the nut portion 19 through the working hole 6 j that opens in the housing 6.
　本実施形態によれば、モータユニット１の組み立て時に、バスバー９とモータ２の配線部材３３とを接続する際、インバータケース８を開ける必要がない。すなわち、ケース本体８ｄからケース蓋部８ｅを取り外す必要がない。したがって、あらかじめクリーンルーム等の粉塵が少ない環境で、インバータケース８にバスバー９を固定することにより、インバータケース８内に塵埃等の異物などが入ることを抑制でき、インバータ７の性能が安定して維持される。 According to this embodiment, it is not necessary to open the inverter case 8 when connecting the bus bar 9 and the wiring member 33 of the motor 2 when the motor unit 1 is assembled. That is, it is not necessary to remove the case lid 8e from the case body 8d. Therefore, by fixing the bus bar 9 to the inverter case 8 in advance in a dust-free environment such as a clean room, foreign matter such as dust can be prevented from entering the inverter case 8, and the performance of the inverter 7 can be maintained stably. Is done.
　第１方向から見て、第１連結部材１０は、第２方向の長さが、第３方向の長さよりも小さい。つまり第１連結部材１０は、第３方向に延びる。本実施形態によれば、複数のバスバー９が第３方向に配列し、これに応じて、第１連結部材１０は、第２方向の外形よりも第３方向の外形が大きくされている。このため、第１連結部材１０の外形（特に第２方向の外形）が必要以上に大きくなることが抑えられる。第１連結部材１０の材料費用を削減でき、かつインバータケース８への固定強度を確保しやすくできる。 Referring to the first direction, the first connecting member 10 has a length in the second direction smaller than a length in the third direction. That is, the first connecting member 10 extends in the third direction. According to the present embodiment, the plurality of bus bars 9 are arranged in the third direction, and accordingly, the first connecting member 10 has an outer shape in the third direction larger than the outer shape in the second direction. For this reason, it is suppressed that the external shape (especially external shape of a 2nd direction) of the 1st connection member 10 becomes larger than necessary. The material cost of the first connecting member 10 can be reduced, and the fixing strength to the inverter case 8 can be easily secured.
　第１連結部材１０は、仕切り壁部１０ｄと、取付け筒部１０ａと、挿入部１０ｂと、バスバー固定部１０ｃと、第１溝部１０ｅと、第１フランジ部１０ｈと、ナット保持部１０ｆと、絶縁壁部１０ｇと、を有する。 The first connecting member 10 includes a partition wall portion 10d, an attachment tube portion 10a, an insertion portion 10b, a bus bar fixing portion 10c, a first groove portion 10e, a first flange portion 10h, a nut holding portion 10f, and an insulating member. 10 g of wall parts.
　仕切り壁部１０ｄは、板状である。仕切り壁部１０ｄは、第１方向に垂直な方向に広がる板状である。第１方向から見て、仕切り壁部１０ｄは、第３方向に延びる長円形状である。第１方向から見て、仕切り壁部１０ｄは、第３方向を長軸とし、第２方向を短軸とする長円形状である。仕切り壁部１０ｄの外周部は、壁部８ｂのうち第１開口孔８ｃの孔周りの全周にわたって、第１方向一方側から対向する。本実施形態において「第１開口孔８ｃの孔周り」とは、壁部８ｂにおいて第１開口孔８ｃの内周に隣接配置され、第１開口孔８ｃの内周に沿って延びる環状の部分である。仕切り壁部１０ｄは、第１開口孔８ｃを塞ぐ。仕切り壁部１０ｄは、第１開口孔８ｃの第１方向一方側の開口を塞ぐ。第１方向から見て、仕切り壁部１０ｄは、第１開口孔８ｃの全体と重なり、第１開口孔８ｃ全体を覆う。仕切り壁部１０ｄは、第１開口孔８ｃと第２開口孔６ｃとの連通を遮断する。 The partition wall 10d has a plate shape. The partition wall 10d has a plate shape that extends in a direction perpendicular to the first direction. When viewed from the first direction, the partition wall 10d has an oval shape extending in the third direction. When viewed from the first direction, the partition wall 10d has an oval shape with the third direction as the major axis and the second direction as the minor axis. The outer peripheral part of the partition wall part 10d is opposed from one side in the first direction over the entire periphery of the wall part 8b around the first opening hole 8c. In this embodiment, “around the hole of the first opening hole 8c” is an annular portion that is disposed adjacent to the inner periphery of the first opening hole 8c in the wall portion 8b and extends along the inner periphery of the first opening hole 8c. is there. The partition wall portion 10d closes the first opening hole 8c. The partition wall portion 10d closes the opening on the one side in the first direction of the first opening hole 8c. When viewed from the first direction, the partition wall portion 10d overlaps the entire first opening hole 8c and covers the entire first opening hole 8c. The partition wall portion 10d blocks communication between the first opening hole 8c and the second opening hole 6c.
　取付け筒部１０ａは、仕切り壁部１０ｄから第１方向他方側に向けて延びる筒状である。第１方向から見て、取付け筒部１０ａは、第３方向に延びる長円形状である。第１方向から見て、取付け筒部１０ａは、第３方向を長軸とし、第２方向を短軸とする長円形状である。取付け筒部１０ａは、第１開口孔８ｃ内に挿入される。本実施形態では、取付け筒部１０ａが、第１開口孔８ｃ内に嵌合する。本実施形態によれば、取付け筒部１０ａが第１開口孔８ｃ内に嵌合することにより、第１連結部材１０とインバータケース８とが位置決めされて組み立てられる。これにより、バスバー９とインバータケース８（の端子台等）との位置決めも正確に行える。第１連結部材１０と第２連結部材１４とを組み合わせる際の位置合わせが安定して行え、バスバー９とモータ２の配線部材３３との接続も容易となる。第１方向から見て、バスバー９は、取付け筒部１０ａの内側に、取付け筒部１０ａから離れて配置される。取付け筒部１０ａにより、第１開口孔８ｃとバスバー９との間の絶縁が確保される。 The mounting cylinder portion 10a has a cylindrical shape extending from the partition wall portion 10d toward the other side in the first direction. As viewed from the first direction, the mounting cylinder portion 10a has an oval shape extending in the third direction. When viewed from the first direction, the mounting tube portion 10a has an oval shape having the third direction as a major axis and the second direction as a minor axis. The attachment cylinder portion 10a is inserted into the first opening hole 8c. In the present embodiment, the mounting cylinder portion 10a is fitted into the first opening hole 8c. According to this embodiment, the attachment cylinder part 10a fits in the 1st opening hole 8c, and the 1st connection member 10 and the inverter case 8 are positioned and assembled. Thereby, positioning with the bus-bar 9 and the inverter case 8 (the terminal block etc.) can also be performed correctly. Position alignment when combining the first connecting member 10 and the second connecting member 14 can be performed stably, and the connection between the bus bar 9 and the wiring member 33 of the motor 2 is facilitated. As seen from the first direction, the bus bar 9 is disposed inside the attachment cylinder part 10a and away from the attachment cylinder part 10a. The insulation between the 1st opening hole 8c and the bus-bar 9 is ensured by the attachment cylinder part 10a.
　図６に示すように、取付け筒部１０ａは、取付け筒部１０ａの外周面に設けられ第１方向に延びる複数の第１クラッシュリブ１０ｎを有する。複数の第１クラッシュリブ１０ｎは、取付け筒部１０ａの外周面の周方向に沿って互いに間隔をあけて配置される。本実施形態では第１クラッシュリブ１０ｎが、取付け筒部１０ａの外周面のうち、第２方向一方側（＋Ｚ方向）を向く部分、第２方向他方側（－Ｚ方向）を向く部分、軸方向一方側（＋Ｙ方向）を向く部分および軸方向他方側（－Ｙ方向）を向く部分に、それぞれ配置される（図１０参照）。第１クラッシュリブ１０ｎは、取付け筒部１０ａの外周面と第１開口孔８ｃの内周面との間で潰される。第１クラッシュリブ１０ｎは、取付け筒部１０ａの外周面と第１開口孔８ｃの内周面との間で第１方向と直交する方向に潰されつつも、取付け筒部１０ａと第１開口孔８ｃとの第１方向の相対移動を許容する。第１クラッシュリブ１０ｎは、例えば弾性変形領域を超えて塑性変形可能である。本実施形態によれば、複数の第１クラッシュリブ１０ｎにより、第１開口孔８ｃに対して取付け筒部１０ａが精度よく位置決めされる。つまり第１開口孔８ｃに対して取付け筒部１０ａが、センタリングされた姿勢で取り付けられる。 As shown in FIG. 6, the mounting cylinder part 10a has a plurality of first crush ribs 10n provided on the outer peripheral surface of the mounting cylinder part 10a and extending in the first direction. The plurality of first crush ribs 10n are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the mounting cylinder portion 10a. In the present embodiment, the first crush rib 10n has a portion facing the one side in the second direction (+ Z direction), a portion facing the other side in the second direction (−Z direction), and the axial direction on the outer peripheral surface of the mounting cylinder portion 10a. They are arranged on the part facing the one side (+ Y direction) and the part facing the other side (−Y direction) in the axial direction (see FIG. 10). The first crush rib 10n is crushed between the outer peripheral surface of the mounting cylinder portion 10a and the inner peripheral surface of the first opening hole 8c. The first crush rib 10n is crushed in a direction orthogonal to the first direction between the outer peripheral surface of the mounting cylinder portion 10a and the inner peripheral surface of the first opening hole 8c, but the mounting cylinder portion 10a and the first opening hole Relative movement in the first direction with respect to 8c is allowed. The first crush rib 10n can be plastically deformed beyond, for example, an elastic deformation region. According to this embodiment, the attachment cylinder part 10a is accurately positioned with respect to the first opening hole 8c by the plurality of first crush ribs 10n. That is, the attachment cylinder portion 10a is attached to the first opening hole 8c in a centered posture.
　図３および図４に示すように、本実施形態では挿入部１０ｂが、仕切り壁部１０ｄから第１方向一方側に向けて延びる筒状である。第１方向から見て、挿入部１０ｂは、第３方向に延びる長円形状である。第１方向から見て、挿入部１０ｂは、第３方向を長軸とし、第２方向を短軸とする長円形状である。挿入部１０ｂは、第２連結部材１４の後述するガイド筒部１４ａ内に挿入される。挿入部１０ｂは、外周テーパ面１０ｉと、内周テーパ面１０ｊと、第３溝部１０ｋと、を有する。なお、図４においては、第３溝部１０ｋの図示を省略する。 As shown in FIGS. 3 and 4, in the present embodiment, the insertion portion 10b has a cylindrical shape extending from the partition wall portion 10d toward one side in the first direction. When viewed from the first direction, the insertion portion 10b has an oval shape extending in the third direction. When viewed from the first direction, the insertion portion 10b has an oval shape with the third direction as the major axis and the second direction as the minor axis. The insertion portion 10b is inserted into a guide tube portion 14a described later of the second connecting member 14. The insertion portion 10b has an outer peripheral tapered surface 10i, an inner peripheral tapered surface 10j, and a third groove portion 10k. In addition, in FIG. 4, illustration of the 3rd groove part 10k is abbreviate | omitted.
　外周テーパ面１０ｉは、挿入部１０ｂの外周面のうち、第１方向一方側の端部に配置される。外周テーパ面１０ｉは、第１方向一方側へ向かうにしたがい、第１方向から見て第２開口孔６ｃの内側へ向けて位置する傾斜面である。すなわち図３に示すように、第１方向に沿う断面視において、外周テーパ面１０ｉは、第１方向一方側へ向かうにしたがい、挿入部１０ｂの内周面に向けて傾斜して延びる。本実施形態によれば、挿入部１０ｂの第１方向一方側の端部に外周テーパ面１０ｉが設けられるので、ガイド筒部１４ａの内側に、挿入部１０ｂを挿入しやすい。したがって、インバータケース８に装着された第１連結部材１０と、ハウジング６に装着された第２連結部材１４とを、組み立てやすい。 The outer peripheral tapered surface 10i is disposed at the end on the one side in the first direction on the outer peripheral surface of the insertion portion 10b. The outer peripheral tapered surface 10i is an inclined surface located toward the inner side of the second opening hole 6c when viewed from the first direction as it goes to the one side in the first direction. That is, as shown in FIG. 3, in a cross-sectional view along the first direction, the outer peripheral tapered surface 10 i extends in an inclined manner toward the inner peripheral surface of the insertion portion 10 b as it goes toward one side in the first direction. According to the present embodiment, since the outer peripheral tapered surface 10i is provided at the end portion on the one side in the first direction of the insertion portion 10b, it is easy to insert the insertion portion 10b inside the guide tube portion 14a. Therefore, the first connecting member 10 attached to the inverter case 8 and the second connecting member 14 attached to the housing 6 can be easily assembled.
　内周テーパ面１０ｊは、挿入部１０ｂの内周面のうち、第１方向一方側の端部に配置される。第１方向に沿う断面視において、内周テーパ面１０ｊは、第１方向一方側へ向かうにしたがい、挿入部１０ｂの外周面に向けて傾斜して延びる。本実施形態によれば、挿入部１０ｂの第１方向一方側の端部に内周テーパ面１０ｊが設けられるので、第２連結部材１４の後述する内筒部１４ｃの外側に、挿入部１０ｂを嵌めやすい。したがって、インバータケース８に装着された第１連結部材１０と、ハウジング６に装着された第２連結部材１４とを、組み立てやすい。 The inner peripheral taper surface 10j is disposed at the end on the one side in the first direction on the inner peripheral surface of the insertion portion 10b. In a cross-sectional view along the first direction, the inner peripheral tapered surface 10j extends while being inclined toward the outer peripheral surface of the insertion portion 10b as it goes toward one side in the first direction. According to the present embodiment, since the inner peripheral tapered surface 10j is provided at the end portion on the one side in the first direction of the insertion portion 10b, the insertion portion 10b is disposed outside the inner cylinder portion 14c described later of the second connecting member 14. Easy to fit. Therefore, the first connecting member 10 attached to the inverter case 8 and the second connecting member 14 attached to the housing 6 can be easily assembled.
　第３溝部１０ｋは、挿入部１０ｂの外周面のうちガイド筒部１４ａの内周面と対向する部分に配置される。本実施形態では、第３溝部１０ｋが、挿入部１０ｂの外周面のうち、第１方向一方側の端部と第１方向他方側の端部との間に位置する中間部分に配置される。第３溝部１０ｋは、第１方向から見て、挿入部１０ｂの外周面に沿って延びる環状である。第１方向から見て、第３溝部１０ｋは、挿入部１０ｂの外周面に沿って延びる長円形状である。 3rd groove part 10k is arrange | positioned in the part facing the internal peripheral surface of the guide cylinder part 14a among the outer peripheral surfaces of the insertion part 10b. In this embodiment, the 3rd groove part 10k is arrange | positioned in the intermediate part located between the edge part of the 1st direction one side and the edge part of the 1st direction other side among the outer peripheral surfaces of the insertion part 10b. The third groove portion 10k has an annular shape extending along the outer peripheral surface of the insertion portion 10b when viewed from the first direction. When viewed from the first direction, the third groove portion 10k has an oval shape extending along the outer peripheral surface of the insertion portion 10b.
　バスバー固定部１０ｃの数は、バスバー９の数と同じであり、本実施形態では複数（３つ）設けられる。３つのバスバー固定部１０ｃは、第３方向に並んで配置される。バスバー固定部１０ｃは、仕切り壁部１０ｄから第１方向一方側に向けて延びる部分を有する。バスバー固定部１０ｃは、仕切り壁部１０ｄから第１方向他方側に向けて延びる部分を有する。仕切り壁部１０ｄは、バスバー固定部１０ｃを保持する。バスバー固定部１０ｃは、仕切り壁部１０ｄに固定される。仕切り壁部１０ｄは、挿入部１０ｂ内を通した第１開口孔８ｃと第２開口孔６ｃとの連通を遮断する。バスバー固定部１０ｃには、バスバー９の一部が埋め込まれて固定される。具体的には、バスバー９をインサート部材とするインサート成形等により、バスバー固定部１０ｃに、バスバー９の一部が埋め込まれて固定される。本実施形態によれば、バスバー９とバスバー固定部１０ｃとが密着して、バスバー９とバスバー固定部１０ｃとの間のシール性が確保される。バスバー９が、バスバー固定部１０ｃに安定して支持される。また、仕切り壁部１０ｄによって、ハウジング６内のオイルＯ等が、第２開口孔６ｃおよび第１開口孔８ｃを通して、インバータケース８内に入ることが抑制される。簡素な構造により、第１開口孔８ｃを封止できる。 The number of bus bar fixing portions 10c is the same as the number of bus bars 9, and a plurality (three) are provided in this embodiment. The three bus bar fixing portions 10c are arranged side by side in the third direction. The bus bar fixing portion 10c has a portion extending from the partition wall portion 10d toward the one side in the first direction. The bus bar fixing portion 10c has a portion extending from the partition wall portion 10d toward the other side in the first direction. The partition wall portion 10d holds the bus bar fixing portion 10c. The bus bar fixing portion 10c is fixed to the partition wall portion 10d. The partition wall portion 10d blocks communication between the first opening hole 8c and the second opening hole 6c that have passed through the insertion portion 10b. A part of the bus bar 9 is embedded and fixed in the bus bar fixing portion 10c. Specifically, a part of the bus bar 9 is embedded and fixed in the bus bar fixing portion 10c by insert molding or the like using the bus bar 9 as an insert member. According to the present embodiment, the bus bar 9 and the bus bar fixing portion 10c are in close contact with each other, and the sealing performance between the bus bar 9 and the bus bar fixing portion 10c is ensured. The bus bar 9 is stably supported by the bus bar fixing portion 10c. Further, the partition wall 10d prevents the oil O or the like in the housing 6 from entering the inverter case 8 through the second opening hole 6c and the first opening hole 8c. The first opening hole 8c can be sealed with a simple structure.
　本実施形態では、バスバー固定部１０ｃに、バスバー９の第２延伸部９ｂ、および、一対の第１延伸部９ａのうち第２延伸部９ｂに繋がる（隣接する）各部分が埋め込まれる。つまり、バスバー９は、第１方向に延びる部分（第１延伸部９ａ）、および、第１方向とは異なる方向に延びる部分（第２延伸部９ｂ）がバスバー固定部１０ｃに埋め込まれて固定される。本実施形態によれば、例えばモータユニット１の組み立て時において、バスバー９に第１方向への外力が加わった場合でも、バスバー９がバスバー固定部１０ｃに対して第１方向に移動すること（つまり抜け出し）を抑制できる。バスバー９とバスバー固定部１０ｃとの固定強度が高められ、バスバー９とバスバー固定部１０ｃとの間のシール性が安定して確保される。 In the present embodiment, the bus bar fixing portion 10c is embedded with each of the second extending portion 9b of the bus bar 9 and each of the pair of first extending portions 9a connected to (adjacent to) the second extending portion 9b. That is, the bus bar 9 has a portion extending in the first direction (first extending portion 9a) and a portion extending in a direction different from the first direction (second extending portion 9b) embedded and fixed in the bus bar fixing portion 10c. The According to this embodiment, for example, when the motor unit 1 is assembled, even when an external force in the first direction is applied to the bus bar 9, the bus bar 9 moves in the first direction with respect to the bus bar fixing portion 10c (that is, (Extraction) can be suppressed. The fixing strength between the bus bar 9 and the bus bar fixing portion 10c is increased, and the sealing property between the bus bar 9 and the bus bar fixing portion 10c is stably secured.
　第１溝部１０ｅは、第１連結部材１０のインバータケース８と対向する面に設けられる。第１方向から見て、第１溝部１０ｅは、第１開口孔８ｃを囲む環状である。第１溝部１０ｅは、第１方向から見て、第３方向に長い長円形状である。第１溝部１０ｅは、仕切り壁部１０ｄの外周部に配置される。第１溝部１０ｅは、仕切り壁部１０ｄの外周部に沿って延びる。第１溝部１０ｅは、仕切り壁部１０ｄの外周部において、第１方向他方側を向く面に配置され、第１方向他方側に開口する。 1st groove part 10e is provided in the surface facing the inverter case 8 of the 1st connection member 10. As shown in FIG. When viewed from the first direction, the first groove portion 10e has an annular shape surrounding the first opening hole 8c. The first groove 10e has an oval shape that is long in the third direction when viewed from the first direction. The 1st groove part 10e is arrange | positioned at the outer peripheral part of the partition wall part 10d. The first groove 10e extends along the outer periphery of the partition wall 10d. The first groove portion 10e is disposed on a surface facing the other side in the first direction in the outer peripheral portion of the partition wall portion 10d, and opens to the other side in the first direction.
　第１フランジ部１０ｈは、第１方向から見て、第１溝部１０ｅの外側に位置する。第１フランジ部１０ｈは、仕切り壁部１０ｄの外周部と繋がる。第１フランジ部１０ｈは、板状である。第１フランジ部１０ｈは、第１方向に垂直な方向に広がる。第１フランジ部１０ｈの上記以外の構成については、別途後述する。 The first flange portion 10h is located outside the first groove portion 10e when viewed from the first direction. The first flange portion 10h is connected to the outer peripheral portion of the partition wall portion 10d. The first flange portion 10h is plate-shaped. The first flange portion 10h extends in a direction perpendicular to the first direction. Other configurations of the first flange portion 10h will be described later separately.
　ナット保持部１０ｆは、バスバー９の一対の第１延伸部９ａのうち、第１方向一方側に位置する一方の第１延伸部９ａに沿って延びる。ナット保持部１０ｆは、ナット部１９を保持する。ナット部１９は、ナット保持部１０ｆに、第１方向他方側に向けて差し込まれる。ナット部１９は、ナット保持部１０ｆに保持されたときに、ナット保持部１０ｆに対する第２方向および第３方向への移動が抑制される。ナット部１９は、貫通孔９ｃに対向配置される。本実施形態では、ナット部１９が、バスバー９の下側に配置されて、貫通孔９ｃに下側から対向する。本実施形態によれば、バスバー９の貫通孔９ｃに配線ネジ部１８を通し、ナット保持部１０ｆが保持するナット部１９に締め込むことにより、バスバー９とモータ２の配線部材３３とを接続できる。第１連結部材１０を端子台として利用して、簡素な構造により、バスバー９と配線部材３３とを接続できる。また、ハウジング６内における配線の引き回しの自由度を高めることができる。 The nut holding part 10f extends along one first extending part 9a located on one side in the first direction among the pair of first extending parts 9a of the bus bar 9. The nut holding part 10 f holds the nut part 19. The nut portion 19 is inserted into the nut holding portion 10f toward the other side in the first direction. When the nut portion 19 is held by the nut holding portion 10f, movement in the second direction and the third direction with respect to the nut holding portion 10f is suppressed. The nut portion 19 is disposed to face the through hole 9c. In this embodiment, the nut part 19 is arrange | positioned under the bus-bar 9, and opposes the through-hole 9c from the bottom. According to this embodiment, the bus bar 9 and the wiring member 33 of the motor 2 can be connected by passing the wiring screw portion 18 through the through hole 9c of the bus bar 9 and tightening the nut screw 19 held by the nut holding portion 10f. . By using the first connecting member 10 as a terminal block, the bus bar 9 and the wiring member 33 can be connected with a simple structure. In addition, the degree of freedom for routing the wiring in the housing 6 can be increased.
　絶縁壁部１０ｇは、仕切り壁部１０ｄから第１方向一方側に向けて延びる。絶縁壁部１０ｇは、第３方向に垂直な方向に広がる板状である。絶縁壁部１０ｇは、隣り合うバスバー９同士の間に配置されて、第１方向に延びる。絶縁壁部１０ｇは、第３方向に並んで複数（２つ）設けられる。本実施形態では、隣り合うバスバー固定部１０ｃ同士が、仕切り壁部１０ｄの第１方向一方側において、絶縁壁部１０ｇを介して第３方向に繋がる。本実施形態によれば、絶縁壁部１０ｇによって、隣り合うバスバー９同士の間の絶縁が確保される。 The insulating wall 10g extends from the partition wall 10d toward the one side in the first direction. The insulating wall portion 10g has a plate shape that extends in a direction perpendicular to the third direction. The insulating wall 10g is disposed between the adjacent bus bars 9 and extends in the first direction. A plurality (two) of insulating walls 10g are provided side by side in the third direction. In the present embodiment, adjacent bus bar fixing portions 10c are connected in the third direction via the insulating wall portion 10g on one side in the first direction of the partition wall portion 10d. According to this embodiment, the insulation between the adjacent bus bars 9 is ensured by the insulating wall 10g.
　第２連結部材１４は、樹脂製である。第２連結部材１４は、例えばエラストマー成分を含有するＰＰＳ樹脂等からなる。第２連結部材１４は、単一の部材により構成される。第２連結部材１４は、第１連結部材１０と同じ材料である。 The second connecting member 14 is made of resin. The second connecting member 14 is made of, for example, a PPS resin containing an elastomer component. The 2nd connection member 14 is comprised by the single member. The second connecting member 14 is made of the same material as the first connecting member 10.
　第２連結部材１４は、ハウジング６に取り付けられる。第２連結部材１４は、モータ収容部６ａの壁部６ｅに取り付けられる。第２連結部材１４は、第１方向においてハウジング６と接触する。第２連結部材１４は、後述する複数の第２ネジ部材１６により、ハウジング６に固定される。つまり第２連結部材１４は、ハウジング６に固定される。第２連結部材１４は、第１方向においてハウジング６とインバータケース８との間に位置し、第２開口孔６ｃに設けられる。第２連結部材１４は、第１連結部材１０と第１方向に対向する。第２連結部材１４には、バスバー９が通される。バスバー９は、第２連結部材１４に第１方向一方側へ向けて挿入される。バスバー９の第１方向一方側の端部９ｄは、第２連結部材１４から第１方向一方側に突出する。 The second connecting member 14 is attached to the housing 6. The 2nd connection member 14 is attached to the wall part 6e of the motor accommodating part 6a. The second connecting member 14 contacts the housing 6 in the first direction. The second connecting member 14 is fixed to the housing 6 by a plurality of second screw members 16 described later. That is, the second connecting member 14 is fixed to the housing 6. The second connecting member 14 is located between the housing 6 and the inverter case 8 in the first direction, and is provided in the second opening hole 6c. The second connecting member 14 faces the first connecting member 10 in the first direction. The bus bar 9 is passed through the second connecting member 14. The bus bar 9 is inserted into the second connecting member 14 toward one side in the first direction. The end 9d on one side in the first direction of the bus bar 9 protrudes from the second connecting member 14 to one side in the first direction.
　第１方向から見て、第２連結部材１４は、第２方向の長さが、第３方向の長さよりも小さい。つまり第２連結部材１４は、第３方向に延びる。本実施形態によれば、複数のバスバー９が第３方向に配列し、これに応じて、第２連結部材１４は、第２方向の外形よりも第３方向の外形が大きくされている。このため、第２連結部材１４の外形（特に第２方向の外形）が必要以上に大きくなることが抑えられる。第２連結部材１４の材料費用を削減でき、かつハウジング６への固定強度を確保しやすくできる。 When viewed from the first direction, the second connecting member 14 has a length in the second direction smaller than a length in the third direction. That is, the second connecting member 14 extends in the third direction. According to the present embodiment, the plurality of bus bars 9 are arranged in the third direction, and accordingly, the outer shape in the third direction of the second connecting member 14 is made larger than the outer shape in the second direction. For this reason, it is suppressed that the external shape (especially external shape of a 2nd direction) of the 2nd connection member 14 becomes large more than necessary. The material cost of the second connecting member 14 can be reduced, and the fixing strength to the housing 6 can be easily secured.
　第２連結部材１４は、取付け壁部１４ｂと、ガイド筒部１４ａと、内筒部１４ｃと、連結壁部１４ｄと、第２溝部１４ｅと、第２フランジ部１４ｆと、を有する。 The second connecting member 14 includes a mounting wall portion 14b, a guide tube portion 14a, an inner tube portion 14c, a connecting wall portion 14d, a second groove portion 14e, and a second flange portion 14f.
　取付け壁部１４ｂは、板状である。取付け壁部１４ｂは、第１方向に垂直な方向に広がる板状である。取付け壁部１４ｂは、第２開口孔６ｃの内周に沿って延びる環状である。第１方向から見て、取付け壁部１４ｂは、第３方向に延びる長円形状である。第１方向から見て、取付け壁部１４ｂは、第３方向を長軸とし、第２方向を短軸とする長円形状である。取付け壁部１４ｂの内周部以外の部分は、壁部６ｅのうち第２開口孔６ｃの孔周りの全周にわたって、第１方向他方側から対向する。本実施形態において「第２開口孔６ｃの孔周り」とは、壁部６ｅにおいて第２開口孔６ｃの内周に隣接配置され、第２開口孔６ｃの内周に沿って延びる環状の部分である。 The mounting wall portion 14b is plate-shaped. The mounting wall portion 14b has a plate shape that extends in a direction perpendicular to the first direction. The mounting wall portion 14b has an annular shape extending along the inner periphery of the second opening hole 6c. When viewed from the first direction, the mounting wall portion 14b has an oval shape extending in the third direction. When viewed from the first direction, the mounting wall portion 14b has an oval shape with the third direction as the major axis and the second direction as the minor axis. Parts other than the inner peripheral part of the mounting wall part 14b are opposed from the other side in the first direction over the entire circumference of the wall part 6e around the second opening hole 6c. In the present embodiment, “around the hole of the second opening hole 6c” is an annular portion that is disposed adjacent to the inner periphery of the second opening hole 6c in the wall portion 6e and extends along the inner periphery of the second opening hole 6c. is there.
　ガイド筒部１４ａは、取付け壁部１４ｂから第１方向一方側に向けて延びる筒状である。ガイド筒部１４ａは、取付け壁部１４ｂの内周部から第１方向一方側に延びる。第１方向から見て、ガイド筒部１４ａは、第３方向に延びる長円形状である。第１方向から見て、ガイド筒部１４ａは、第３方向を長軸とし、第２方向を短軸とする長円形状である。ガイド筒部１４ａは、第２開口孔６ｃ内に挿入される。本実施形態では、ガイド筒部１４ａが、第２開口孔６ｃ内に嵌合する。本実施形態によれば、ガイド筒部１４ａが第２開口孔６ｃ内に嵌合することにより、第２連結部材１４とハウジング６とが位置決めされて組み立てられる。これにより、第２連結部材１４と第１連結部材１０とを組み合わせる際の位置合わせが安定して行え、組み立てが容易となる。第１方向から見て、バスバー９は、ガイド筒部１４ａの内側に、ガイド筒部１４ａから離れて配置される。ガイド筒部１４ａにより、第２開口孔６ｃとバスバー９との間の絶縁が確保される。 The guide tube portion 14a has a tubular shape extending from the mounting wall portion 14b toward the one side in the first direction. The guide tube portion 14a extends from the inner peripheral portion of the mounting wall portion 14b to one side in the first direction. When viewed from the first direction, the guide tube portion 14a has an oval shape extending in the third direction. When viewed from the first direction, the guide tube portion 14a has an oval shape with the third direction as the long axis and the second direction as the short axis. The guide cylinder portion 14a is inserted into the second opening hole 6c. In the present embodiment, the guide tube portion 14a is fitted into the second opening hole 6c. According to the present embodiment, the second connecting member 14 and the housing 6 are positioned and assembled by fitting the guide tube portion 14a into the second opening hole 6c. Thereby, the alignment at the time of combining the 2nd connection member 14 and the 1st connection member 10 can be performed stably, and an assembly becomes easy. When viewed from the first direction, the bus bar 9 is disposed inside the guide tube portion 14a and away from the guide tube portion 14a. The guide tube portion 14a ensures insulation between the second opening hole 6c and the bus bar 9.
　図６に示すように、ガイド筒部１４ａは、ガイド筒部１４ａの外周面に設けられ第１方向に延びる複数の第２クラッシュリブ１４ｋを有する。複数の第２クラッシュリブ１４ｋは、ガイド筒部１４ａの外周面の周方向に沿って互いに間隔をあけて配置される。本実施形態では第２クラッシュリブ１４ｋが、ガイド筒部１４ａの外周面のうち、第２方向一方側（＋Ｚ方向）を向く部分、第２方向他方側（－Ｚ方向）を向く部分、軸方向一方側（＋Ｙ方向）を向く部分および軸方向他方側（－Ｙ方向）を向く部分に、それぞれ配置される。第２クラッシュリブ１４ｋは、ガイド筒部１４ａの外周面と第２開口孔６ｃの内周面との間で潰される。第２クラッシュリブ１４ｋは、ガイド筒部１４ａの外周面と第２開口孔６ｃの内周面との間で第１方向と直交する方向に潰されつつも、ガイド筒部１４ａと第２開口孔６ｃとの第１方向の相対移動を許容する。第２クラッシュリブ１４ｋは、例えば弾性変形領域を超えて塑性変形可能である。本実施形態によれば、複数の第２クラッシュリブ１４ｋにより、第２開口孔６ｃに対してガイド筒部１４ａが精度よく位置決めされる。つまり第２開口孔６ｃに対してガイド筒部１４ａが、センタリングされた姿勢で取り付けられる。 As shown in FIG. 6, the guide tube portion 14a has a plurality of second crush ribs 14k provided on the outer peripheral surface of the guide tube portion 14a and extending in the first direction. The plurality of second crush ribs 14k are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the guide tube portion 14a. In the present embodiment, the second crush rib 14k is a portion of the outer peripheral surface of the guide tube portion 14a facing the one side in the second direction (+ Z direction), a portion facing the other side in the second direction (−Z direction), and the axial direction. Arranged in a portion facing one side (+ Y direction) and a portion facing the other side in the axial direction (−Y direction). The second crush rib 14k is crushed between the outer peripheral surface of the guide tube portion 14a and the inner peripheral surface of the second opening hole 6c. The second crush rib 14k is crushed in a direction orthogonal to the first direction between the outer peripheral surface of the guide tube portion 14a and the inner peripheral surface of the second opening hole 6c, but the guide tube portion 14a and the second opening hole The relative movement in the first direction with respect to 6c is allowed. The second crush rib 14k can be plastically deformed beyond, for example, an elastic deformation region. According to the present embodiment, the guide cylinder portion 14a is accurately positioned with respect to the second opening hole 6c by the plurality of second crush ribs 14k. That is, the guide cylinder portion 14a is attached to the second opening hole 6c in a centered posture.
　図３に示すようにガイド筒部１４ａは、受け入れテーパ面１４ｈを有する。受け入れテーパ面１４ｈは、ガイド筒部１４ａの内周面のうち、第１方向他方側の端部に位置する開口部に配置される。受け入れテーパ面１４ｈは、第１方向他方側へ向かうにしたがい、第１方向から見て第２開口孔６ｃの外側へ向けて位置する傾斜面である。すなわち図３に示すように、第１方向に沿う断面視において、受け入れテーパ面１４ｈは、第１方向他方側へ向かうにしたがい、取付け壁部１４ｂの外周部に向けて傾斜して延びる。本実施形態によれば、ガイド筒部１４ａの第１方向他方側の開口部に受け入れテーパ面１４ｈが設けられるので、ガイド筒部１４ａの内側に、挿入部１０ｂを挿入しやすい。したがって、インバータケース８に装着された第１連結部材１０と、ハウジング６に装着された第２連結部材１４とを、組み立てやすい。 As shown in FIG. 3, the guide tube portion 14a has a receiving tapered surface 14h. The receiving taper surface 14h is disposed in an opening located at the other end in the first direction on the inner peripheral surface of the guide tube portion 14a. The receiving taper surface 14h is an inclined surface positioned toward the outside of the second opening hole 6c when viewed from the first direction as it goes toward the other side in the first direction. That is, as shown in FIG. 3, in a cross-sectional view along the first direction, the receiving tapered surface 14 h extends while being inclined toward the outer peripheral portion of the mounting wall portion 14 b as it goes toward the other side in the first direction. According to the present embodiment, since the receiving tapered surface 14h is provided in the opening on the other side in the first direction of the guide tube portion 14a, it is easy to insert the insertion portion 10b inside the guide tube portion 14a. Therefore, the first connecting member 10 attached to the inverter case 8 and the second connecting member 14 attached to the housing 6 can be easily assembled.
　内筒部１４ｃは、ガイド筒部１４ａの内側に配置される。第１方向から見て、内筒部１４ｃは、ガイド筒部１４ａから内側に離れて配置される。第１方向から見て、内筒部１４ｃの形状と、ガイド筒部１４ａの形状とは、互いに略相似である。第１方向から見て、バスバー９は、内筒部１４ｃの内側に、内筒部１４ｃから離れて配置される。内筒部１４ｃにより、第２開口孔６ｃとバスバー９との間の絶縁が確保される。 The inner cylinder part 14c is arranged inside the guide cylinder part 14a. When viewed from the first direction, the inner cylinder portion 14c is disposed away from the guide cylinder portion 14a inward. As viewed from the first direction, the shape of the inner cylinder portion 14c and the shape of the guide cylinder portion 14a are substantially similar to each other. When viewed from the first direction, the bus bar 9 is disposed on the inner side of the inner cylinder portion 14c and away from the inner cylinder portion 14c. The insulation between the 2nd opening hole 6c and the bus-bar 9 is ensured by the inner cylinder part 14c.
　内筒部１４ｃは、案内テーパ面１４ｇを有する。案内テーパ面１４ｇは、内筒部１４ｃの外周面のうち、第１方向他方側の端部に配置される。案内テーパ面１４ｇは、第１方向他方側へ向かうにしたがい、第１方向から見て第２開口孔６ｃの内側へ向けて位置する傾斜面である。すなわち第１方向に沿う断面視において、案内テーパ面１４ｇは、第１方向他方側へ向かうにしたがい、内筒部１４ｃの内周面に向けて傾斜して延びる。本実施形態によれば、内筒部１４ｃの第１方向他方側の端部に案内テーパ面１４ｇが設けられるので、内筒部１４ｃの外側に、挿入部１０ｂを嵌めやすい。 The inner cylinder portion 14c has a guide taper surface 14g. 14 g of guide taper surfaces are arrange | positioned among the outer peripheral surfaces of the inner cylinder part 14c at the edge part of the other side of a 1st direction. The guide taper surface 14g is an inclined surface located toward the inside of the second opening hole 6c when viewed from the first direction as it goes toward the other side in the first direction. That is, in the cross-sectional view along the first direction, the guide taper surface 14g is inclined and extended toward the inner peripheral surface of the inner cylinder portion 14c as it goes to the other side in the first direction. According to this embodiment, since the guide taper surface 14g is provided at the end portion on the other side in the first direction of the inner cylinder portion 14c, the insertion portion 10b can be easily fitted to the outside of the inner cylinder portion 14c.
　内筒部１４ｃの第１方向一方側の端部と、ガイド筒部１４ａの第１方向一方側の端部とは、連結壁部１４ｄを介して繋がる。連結壁部１４ｄは、板状である。連結壁部１４ｄは、第１方向に垂直な方向に広がる板状である。連結壁部１４ｄは、第２開口孔６ｃの内周に沿って延びる環状である。本実施形態によれば、挿入部１０ｂの内側に内筒部１４ｃが設けられ、挿入部１０ｂの第１方向一方側に連結壁部１４ｄが設けられるので、挿入部１０ｂとガイド筒部１４ａとの間に、ハウジング６内のオイルＯ等が到達しにくい。したがって、挿入部１０ｂとガイド筒部１４ａとの間を通して、ハウジング６の内部から外部へオイルＯ等が漏れ出すことを抑制できる。また、後述する第３シール部１３の劣化を抑制して、第３シール部１３の部品寿命を延ばすことができる。 The end portion on the one side in the first direction of the inner tube portion 14c and the end portion on the one side in the first direction of the guide tube portion 14a are connected via a connecting wall portion 14d. The connecting wall portion 14d has a plate shape. The connecting wall portion 14d has a plate shape extending in a direction perpendicular to the first direction. The connecting wall portion 14d has an annular shape that extends along the inner periphery of the second opening hole 6c. According to the present embodiment, the inner cylinder part 14c is provided inside the insertion part 10b, and the connecting wall part 14d is provided on one side in the first direction of the insertion part 10b, so that the insertion part 10b and the guide cylinder part 14a In the meantime, the oil O in the housing 6 is difficult to reach. Therefore, it is possible to suppress the oil O and the like from leaking from the inside of the housing 6 to the outside through between the insertion portion 10b and the guide tube portion 14a. Moreover, deterioration of the 3rd seal | sticker part 13 mentioned later can be suppressed, and the component lifetime of the 3rd seal | sticker part 13 can be extended.
　第２溝部１４ｅは第２連結部材１４のハウジング６と対向する面に設けられる。第１方向から見て、第２溝部１４ｅは第２開口孔６ｃを囲む環状である。第２溝部１４ｅは第１方向から見て、第３方向に長い長円形状である。第２溝部１４ｅは、取付け壁部１４ｂに配置される。第２溝部１４ｅは、取付け壁部１４ｂに沿って延びる環状である。第２溝部１４ｅは、取付け壁部１４ｂの第１方向一方側を向く面に配置され、第１方向一方側に開口する。 The second groove portion 14e is provided on the surface of the second connecting member 14 facing the housing 6. When viewed from the first direction, the second groove portion 14e has an annular shape surrounding the second opening hole 6c. The second groove portion 14e has an oval shape that is long in the third direction when viewed from the first direction. The second groove portion 14e is disposed on the mounting wall portion 14b. The second groove portion 14e has an annular shape extending along the attachment wall portion 14b. The 2nd groove part 14e is arrange | positioned in the surface which faces the 1st direction one side of the attachment wall part 14b, and opens to the 1st direction one side.
　第２フランジ部１４ｆは、第１方向から見て、第２溝部１４ｅの外側に位置する。第２フランジ部１４ｆは、取付け壁部１４ｂの外周部と繋がる。第２フランジ部１４ｆは、板状である。第２フランジ部１４ｆは、第１方向に垂直な方向に広がる。第２フランジ部１４ｆの上記以外の構成については、別途後述する。 The second flange portion 14f is located outside the second groove portion 14e when viewed from the first direction. The second flange portion 14f is connected to the outer peripheral portion of the mounting wall portion 14b. The second flange portion 14f has a plate shape. The second flange portion 14f extends in a direction perpendicular to the first direction. Other configurations of the second flange portion 14f will be described later.
　第１シール部１１は、第１方向においてインバータケース８と第１連結部材１０との間に配置され、インバータケース８および第１連結部材１０に接触する。第１シール部１１は、第１連結部材１０の第１方向他方側を向く面と、この面に対向するインバータケース８の第１方向一方側を向く面との間に配置される。第１シール部１１は、弾性変形可能である。本実施形態によれば、第１シール部１１によって、インバータケース８と第１連結部材１０との間がシールされる。第１シール部１１がインバータケース８と第１連結部材１０との間で第１方向に挟まれるので、第１ネジ部材１５による第１方向の押し付け力を、第１シール部１１全体に均等に作用させることができる。したがって、第１シール部１１によるシール機能が安定する。組み立て時に、第１シール部１１にねじれや損傷等が生じることを抑制できる。第１シール部１１によって、インバータケース８の外部から内部に水やオイル等の液体および異物などが入ることを抑えられる。第１シール部１１により、第１開口孔８ｃのシール性を確保できる。 The first seal portion 11 is disposed between the inverter case 8 and the first connecting member 10 in the first direction, and contacts the inverter case 8 and the first connecting member 10. The 1st seal | sticker part 11 is arrange | positioned between the surface which faces the 1st direction other side of the 1st connection member 10, and the surface which faces the 1st direction one side of the inverter case 8 which opposes this surface. The first seal part 11 is elastically deformable. According to this embodiment, the space between the inverter case 8 and the first connecting member 10 is sealed by the first seal portion 11. Since the first seal portion 11 is sandwiched between the inverter case 8 and the first connecting member 10 in the first direction, the pressing force in the first direction by the first screw member 15 is evenly distributed over the entire first seal portion 11. Can act. Therefore, the sealing function by the 1st seal part 11 is stabilized. During assembly, the first seal portion 11 can be prevented from being twisted or damaged. By the first seal portion 11, it is possible to prevent liquid such as water and oil and foreign matter from entering the inside of the inverter case 8 from the outside. The first seal portion 11 can ensure the sealing performance of the first opening hole 8c.
　第１シール部１１は、第１方向から見て、第１開口孔８ｃを囲む環状である。第１方向から見て、第１シール部１１は、第３方向に長い長円形状である。本実施形態では、第１シール部１１が、第１連結部材１０とは別部材として設けられるＯリング等である。本実施形態によれば、第１開口孔８ｃを通してインバータケース８の外部から内部へ水やオイル等の液体および異物などが入ることを、第１シール部１１により安定して抑えられる。後述する複数の第１ネジ部材１５により、第１シール部１１のシール性が良好に維持される。 The first seal portion 11 has an annular shape surrounding the first opening hole 8c when viewed from the first direction. When viewed from the first direction, the first seal portion 11 has an oval shape that is long in the third direction. In the present embodiment, the first seal portion 11 is an O-ring or the like provided as a separate member from the first connecting member 10. According to the present embodiment, the first seal portion 11 can stably prevent liquids such as water and oil and foreign matter from entering the interior of the inverter case 8 through the first opening 8c. A plurality of first screw members 15 to be described later maintain good sealing performance of the first seal portion 11.
　第１シール部１１は、第１溝部１０ｅに配置される。本実施形態によれば、第１連結部材１０への第１シール部１１の取り付けが容易であり、モータユニット１の組み立て時および組み立て後の第１シール部１１の位置ずれが抑制される。第１溝部１０ｅにより、第１シール部１１のシール性が安定して確保される。 The first seal part 11 is arranged in the first groove part 10e. According to the present embodiment, it is easy to attach the first seal portion 11 to the first connecting member 10, and the displacement of the first seal portion 11 during and after the assembly of the motor unit 1 is suppressed. The first groove portion 10e ensures the sealing performance of the first seal portion 11 stably.
　第２シール部１２は、第１方向においてハウジング６と第２連結部材１４との間に配置され、ハウジング６および第２連結部材１４に接触する。第２シール部１２は、ハウジング６の第１方向他方側を向く面と、この面に対向する第２連結部材１４の第１方向一方側を向く面との間に配置される。第２シール部１２は、弾性変形可能である。本実施形態によれば、第２シール部１２によって、ハウジング６と第２連結部材１４との間がシールされる。第２シール部１２がハウジング６と第２連結部材１４との間で第１方向に挟まれるので、第２ネジ部材１６による第１方向の押し付け力を、第２シール部１２全体に均等に作用させることができる。したがって、第２シール部１２によるシール機能が安定する。組み立て時に、第２シール部１２にねじれや損傷等が生じることを抑制できる。第２シール部１２によって、ハウジング６の外部から内部に水等の液体および異物などが入ることや、ハウジング６の内部から外部へオイルＯ等が漏れ出すことを抑えられる。第２シール部１２により、第２開口孔６ｃのシール性を確保できる。 The second seal portion 12 is disposed between the housing 6 and the second connecting member 14 in the first direction, and contacts the housing 6 and the second connecting member 14. The second seal portion 12 is disposed between a surface facing the other side in the first direction of the housing 6 and a surface facing the one side in the first direction of the second connecting member 14 facing the surface. The second seal portion 12 can be elastically deformed. According to the present embodiment, the space between the housing 6 and the second connecting member 14 is sealed by the second seal portion 12. Since the second seal portion 12 is sandwiched between the housing 6 and the second connecting member 14 in the first direction, the pressing force in the first direction by the second screw member 16 acts equally on the entire second seal portion 12. Can be made. Therefore, the sealing function by the second seal portion 12 is stabilized. It is possible to suppress the second seal portion 12 from being twisted or damaged during assembly. By the second seal portion 12, it is possible to prevent liquids such as water and foreign matter from entering the inside of the housing 6 and oil O and the like from leaking out of the housing 6 to the outside. The second seal portion 12 can ensure the sealing performance of the second opening hole 6c.
　第２シール部１２は、第１方向から見て、第２開口孔６ｃを囲む環状である。第１方向から見て、第２シール部１２は、第３方向に長い長円形状である。本実施形態では、第２シール部１２が、第２連結部材１４とは別部材として設けられるＯリング等である。本実施形態によれば、第２開口孔６ｃを通してハウジング６の外部から内部に水等の液体および異物などが入ることや、ハウジング６の内部から外部へオイルＯ等が漏れ出すことを、第２シール部１２により安定して抑えられる。後述する複数の第２ネジ部材１６により、第２シール部１２のシール性が良好に維持される。 The second seal part 12 has an annular shape surrounding the second opening hole 6c when viewed from the first direction. When viewed from the first direction, the second seal portion 12 has an oval shape that is long in the third direction. In the present embodiment, the second seal portion 12 is an O-ring or the like provided as a separate member from the second connecting member 14. According to the present embodiment, liquid such as water and foreign matter enter the inside of the housing 6 from the outside through the second opening 6c, and oil O etc. leaks from the inside of the housing 6 to the outside. It is stably suppressed by the seal portion 12. The sealing performance of the second seal portion 12 is favorably maintained by a plurality of second screw members 16 described later.
　第２シール部１２は、第２溝部１４ｅに配置される。本実施形態によれば、第２連結部材１４への第２シール部１２の取り付けが容易であり、モータユニット１の組み立て時および組み立て後の第２シール部１２の位置ずれが抑制される。第２溝部１４ｅにより、第２シール部１２のシール性が安定して確保される。なお、本実施形態の例では、第１方向から見て、第２シール部１２と第１シール部１１とが、互いに重なって配置される。すなわち、第１方向から見て、第２溝部１４ｅと第１溝部１０ｅとが、互いに重なって配置される。 The second seal portion 12 is disposed in the second groove portion 14e. According to this embodiment, it is easy to attach the second seal portion 12 to the second connecting member 14, and the displacement of the second seal portion 12 during and after the assembly of the motor unit 1 is suppressed. By the second groove portion 14e, the sealing performance of the second seal portion 12 is stably secured. In the example of the present embodiment, the second seal portion 12 and the first seal portion 11 are disposed so as to overlap each other when viewed from the first direction. That is, when viewed from the first direction, the second groove portion 14e and the first groove portion 10e are disposed so as to overlap each other.
　第３シール部１３は、第１連結部材１０と第２連結部材１４との間を封止する。第３シール部１３は、ガイド筒部１４ａの内周面と、この内周面に対向する挿入部１０ｂの外周面との間に配置される。第３シール部１３は、ガイド筒部１４ａの内周面および挿入部１０ｂの外周面に接触する。つまり第３シール部１３は、ガイド筒部１４ａの内周面と挿入部１０ｂの外周面との間を封止する。第３シール部１３は、弾性変形可能である。本実施形態によれば、第３シール部１３によって、第１連結部材１０と第２連結部材１４との間がシールされる。詳しくは、モータユニット１の組み立て時に、第１連結部材１０の挿入部１０ｂが、第２連結部材１４のガイド筒部１４ａ内に挿入されることで、第３シール部１３が、挿入部１０ｂの外周面とガイド筒部１４ａの内周面とに接触して、これらの周面同士の間がシールされる。つまり、第３シール部１３は、バスバー９の第１方向に延びる部分を中心軸と仮定した場合の径方向において、挿入部１０ｂとガイド筒部１４ａとの間を封止する。第３シール部１３によって、ハウジング６の外部から内部に水等の液体および異物などが入ることや、ハウジング６の内部から外部へオイルＯ等が漏れ出すことを抑えられる。第３シール部１３により、第１連結部材１０と第２連結部材１４との間のシール性を確保することで、第２開口孔６ｃのシール性が確保される。 The third seal portion 13 seals between the first connecting member 10 and the second connecting member 14. The third seal portion 13 is disposed between the inner peripheral surface of the guide cylinder portion 14a and the outer peripheral surface of the insertion portion 10b facing the inner peripheral surface. The third seal portion 13 contacts the inner peripheral surface of the guide tube portion 14a and the outer peripheral surface of the insertion portion 10b. That is, the third seal portion 13 seals between the inner peripheral surface of the guide tube portion 14a and the outer peripheral surface of the insertion portion 10b. The third seal portion 13 is elastically deformable. According to this embodiment, the space between the first connecting member 10 and the second connecting member 14 is sealed by the third seal portion 13. Specifically, when the motor unit 1 is assembled, the insertion portion 10b of the first connection member 10 is inserted into the guide tube portion 14a of the second connection member 14, so that the third seal portion 13 is inserted into the insertion portion 10b. The outer peripheral surface and the inner peripheral surface of the guide tube portion 14a are brought into contact with each other, and the space between these peripheral surfaces is sealed. That is, the third seal portion 13 seals between the insertion portion 10b and the guide tube portion 14a in the radial direction assuming that the portion extending in the first direction of the bus bar 9 is the central axis. By the third seal portion 13, it is possible to prevent liquids such as water and foreign matter from entering the inside of the housing 6 and oil O and the like from leaking from the inside of the housing 6 to the outside. By securing the sealing property between the first connecting member 10 and the second connecting member 14 by the third seal portion 13, the sealing property of the second opening hole 6 c is ensured.
　第３シール部１３は、第１方向から見て、挿入部１０ｂの外周面に沿って延びる環状である。第３シール部１３は、第１方向から見て、挿入部１０ｂの外周面に沿って延びる長円形状である。本実施形態では、第３シール部１３が、挿入部１０ｂとは別部材として設けられるＯリング等である。本実施形態によれば、第１連結部材１０の挿入部１０ｂと第２連結部材１４のガイド筒部１４ａとの間、および第２開口孔６ｃを通して、ハウジング６の外部から内部に水等の液体および異物などが入ることや、ハウジング６の内部から外部へオイルＯ等が漏れ出すことを、第３シール部１３により安定して抑えられる。 The third seal portion 13 has an annular shape extending along the outer peripheral surface of the insertion portion 10b when viewed from the first direction. The third seal portion 13 has an oval shape extending along the outer peripheral surface of the insertion portion 10b when viewed from the first direction. In the present embodiment, the third seal portion 13 is an O-ring provided as a separate member from the insertion portion 10b. According to the present embodiment, a liquid such as water enters the housing 6 from the outside to the inside through the second opening 6 c between the insertion portion 10 b of the first connecting member 10 and the guide tube portion 14 a of the second connecting member 14. In addition, the third seal portion 13 can stably suppress the entry of foreign matter and the like, and the leakage of oil O and the like from the inside of the housing 6 to the outside.
　第３シール部１３は、第３溝部１０ｋに配置される。本実施形態によれば、挿入部１０ｂへの第３シール部１３の取り付けが容易であり、モータユニット１の組み立て時および組み立て後の第３シール部１３の位置ずれが抑制される。第３溝部１０ｋにより、第３シール部１３のシール性が安定して確保される。 The third seal portion 13 is disposed in the third groove portion 10k. According to this embodiment, attachment of the 3rd seal part 13 to insertion part 10b is easy, and position shift of the 3rd seal part 13 at the time of assembly of motor unit 1 and after assembly is controlled. By the third groove portion 10k, the sealing performance of the third seal portion 13 is stably secured.
　また本実施形態では、第１連結部材１０および第２連結部材１４がそれぞれ樹脂製であるので、第１連結部材１０および第２連結部材１４の形状の自由度が増し、第１連結部材１０と第２連結部材１４を組み立てやすくできる。具体的には、本実施形態のように、挿入部１０ｂの外周面のうち、第１方向一方側の先端部に外周テーパ面１０ｉを設けて、挿入部１０ｂをガイド筒部１４ａ内に挿入しやすくできる。また、ガイド筒部１４ａの内周面のうち、第１方向他方側の開口部に受け入れテーパ面１４ｈを設けて、挿入部１０ｂをガイド筒部１４ａ内に挿入しやすくできる。また、内周テーパ面１０ｊおよび案内テーパ面１４ｇについても、上述と同様の作用効果が得られる。したがって、第１連結部材１０と第２連結部材１４との位置合わせ（特に第１方向に垂直な方向への位置決め）を容易に行うことができ、第１連結部材１０と第２連結部材１４とを組み立てやすい。 Moreover, in this embodiment, since the 1st connection member 10 and the 2nd connection member 14 are resin, respectively, the freedom degree of the shape of the 1st connection member 10 and the 2nd connection member 14 increases, and the 1st connection member 10 and The second connecting member 14 can be easily assembled. Specifically, as in the present embodiment, an outer peripheral tapered surface 10i is provided at the distal end portion on one side in the first direction of the outer peripheral surface of the insertion portion 10b, and the insertion portion 10b is inserted into the guide tube portion 14a. Easy to do. Further, a receiving taper surface 14h is provided in the opening on the other side in the first direction of the inner peripheral surface of the guide tube portion 14a, so that the insertion portion 10b can be easily inserted into the guide tube portion 14a. The same effects as described above can be obtained with respect to the inner peripheral tapered surface 10j and the guide tapered surface 14g. Therefore, the first connecting member 10 and the second connecting member 14 can be easily aligned (particularly, positioning in a direction perpendicular to the first direction), and the first connecting member 10 and the second connecting member 14 Easy to assemble.
　また、第１連結部材１０および第２連結部材１４が樹脂製であるので、第３シール部１３の損傷等を抑制できる。すなわち、挿入部１０ｂの外周面およびガイド筒部１４ａの内周面に、第３シール部１３が引っ掛かるような硬いエッジ等が設けられることが抑えられて、第３シール部１３にねじれや損傷等が生じることを抑制できる。したがって、第３シール部１３のシール機能が安定する。 Further, since the first connecting member 10 and the second connecting member 14 are made of resin, damage to the third seal portion 13 and the like can be suppressed. That is, it is possible to prevent the third seal portion 13 from being twisted, damaged, or the like by providing a hard edge or the like that the third seal portion 13 is caught on the outer peripheral surface of the insertion portion 10b and the inner peripheral surface of the guide tube portion 14a. Can be suppressed. Therefore, the sealing function of the third seal portion 13 is stabilized.
　第１フランジ部１０ｈは、第１方向から見て、第１シール部１１の外側に位置する。図６および図７に示すように、第１フランジ部１０ｈは、第１ネジ孔部１０ｌと、第１押さえ部１０ｍと、を有する。第１ネジ孔部１０ｌは、第１フランジ部１０ｈを第１方向に貫通し、第１開口孔８ｃの孔周りに、第１開口孔８ｃの内周に沿って互いに間隔をあけて複数配置される。第１ネジ孔部１０ｌには、第１ネジ部材１５が通される。第１ネジ孔部１０ｌの中心軸と、第１ネジ部材１５のネジ軸とは、互いに略一致する。第１ネジ孔部１０ｌの内周部には、金属製の筒状部材が嵌合されてもよい。 The first flange portion 10h is located outside the first seal portion 11 when viewed from the first direction. As shown in FIGS. 6 and 7, the first flange portion 10h includes a first screw hole portion 101 and a first pressing portion 10m. A plurality of first screw hole portions 10l penetrates the first flange portion 10h in the first direction, and are arranged around the hole of the first opening hole 8c at intervals along the inner periphery of the first opening hole 8c. The The first screw member 15 is passed through the first screw hole portion 101. The central axis of the first screw hole portion 101 and the screw axis of the first screw member 15 substantially coincide with each other. A metal cylindrical member may be fitted to the inner peripheral portion of the first screw hole portion 101.
　第１押さえ部１０ｍは、板状である。第１押さえ部１０ｍは、第１方向に垂直な方向に広がる。第１押さえ部１０ｍは、第１方向から見て、第１開口孔８ｃの孔周りに隣り合う一対の第１ネジ孔部１０ｌ同士の間において、第１シール部１１の外側に位置する。本実施形態によれば、第１押さえ部１０ｍによって、第１ネジ部材１５による第１方向の押し付け力を、第１シール部１１に効率よく伝達できる。 The first pressing portion 10m has a plate shape. The first pressing portion 10m extends in a direction perpendicular to the first direction. The first pressing portion 10m is located outside the first seal portion 11 between the pair of first screw hole portions 101 adjacent to each other around the first opening hole 8c when viewed from the first direction. According to the present embodiment, the pressing force in the first direction by the first screw member 15 can be efficiently transmitted to the first seal portion 11 by the first pressing portion 10m.
　第１方向から見て、第１開口孔８ｃの孔周りに隣り合う一対の第１ネジ部材１５同士（第１ネジ部材１５のネジ軸同士）を結ぶ第１仮想線分Ｌ１と、第１シール部１１とは、少なくとも一部で重なる。本実施形態によれば、第１ネジ部材１５による第１方向の押し付け力を、第１シール部１１に安定して作用させることができる。したがって、第１シール部１１のシール機能がより安定する。 A first imaginary line segment L1 that connects a pair of adjacent first screw members 15 (screw shafts of the first screw members 15) adjacent to each other around the first opening hole 8c when viewed from the first direction, and a first seal The part 11 overlaps at least partly. According to the present embodiment, the pressing force in the first direction by the first screw member 15 can be stably applied to the first seal portion 11. Therefore, the sealing function of the first seal portion 11 is more stable.
　第２フランジ部１４ｆは、第１方向から見て、第２シール部１２の外側に位置する。第２フランジ部１４ｆは、第２ネジ孔部１４ｉと、第２押さえ部１４ｊと、を有する。第２ネジ孔部１４ｉは、第２フランジ部１４ｆを第１方向に貫通し、第２開口孔６ｃの孔周りに、第２開口孔６ｃの内周に沿って互いに間隔をあけて複数配置される。第２ネジ孔部１４ｉには、第２ネジ部材１６が通される。第２ネジ孔部１４ｉの中心軸と、第２ネジ部材１６のネジ軸とは、互いに略一致する。第２ネジ孔部１４ｉの内周部には、金属製の筒状部材が嵌合されてもよい。 The second flange portion 14f is located outside the second seal portion 12 when viewed from the first direction. The second flange portion 14f includes a second screw hole portion 14i and a second pressing portion 14j. The second screw hole portion 14i penetrates the second flange portion 14f in the first direction, and a plurality of second screw hole portions 14i are arranged around the hole of the second opening hole 6c and spaced from each other along the inner periphery of the second opening hole 6c. The The second screw member 16 is passed through the second screw hole portion 14i. The central axis of the second screw hole portion 14i and the screw axis of the second screw member 16 are substantially coincident with each other. A metallic cylindrical member may be fitted to the inner peripheral portion of the second screw hole portion 14i.
　第２押さえ部１４ｊは、板状である。第２押さえ部１４ｊは、第１方向に垂直な方向に広がる。第２押さえ部１４ｊは、第１方向から見て、第２開口孔６ｃの孔周りに隣り合う一対の第２ネジ孔部１４ｉ同士の間において、第２シール部１２の外側に位置する。本実施形態によれば、第２押さえ部１４ｊによって、第２ネジ部材１６による第１方向の押し付け力を、第２シール部１２に効率よく伝達できる。 The second pressing portion 14j has a plate shape. The second pressing portion 14j extends in a direction perpendicular to the first direction. The second pressing portion 14j is positioned outside the second seal portion 12 between the pair of second screw hole portions 14i adjacent to each other around the second opening hole 6c when viewed from the first direction. According to the present embodiment, the pressing force in the first direction by the second screw member 16 can be efficiently transmitted to the second seal portion 12 by the second pressing portion 14j.
　第１方向から見て、第２開口孔６ｃの孔周りに隣り合う一対の第２ネジ部材１６同士（第２ネジ部材１６のネジ軸同士）を結ぶ第２仮想線分Ｌ２と、第２シール部１２とは、少なくとも一部で重なる。本実施形態によれば、第２ネジ部材１６による第１方向の押し付け力を、第２シール部１２に安定して作用させることができる。したがって、第２シール部１２のシール機能がより安定する。 When viewed from the first direction, a second imaginary line segment L2 connecting a pair of second screw members 16 adjacent to each other around the second opening hole 6c (the screw shafts of the second screw member 16), and a second seal The portion 12 overlaps at least partly. According to the present embodiment, the pressing force in the first direction by the second screw member 16 can be stably applied to the second seal portion 12. Therefore, the sealing function of the second seal portion 12 is more stable.
　第１ネジ部材１５は、第１方向に延びる。第１ネジ部材１５は、外周に雄ネジ部が設けられるネジ軸部１５ａと、ネジ軸部１５ａよりも外径が大きいネジ頭部１５ｂと、を有する。第１ネジ部材１５は、第１連結部材１０をインバータケース８に固定する。第１ネジ部材１５は、複数設けられる。複数の第１ネジ部材１５は、第１開口孔８ｃの孔周りに、第１開口孔８ｃの内周に沿って互いに間隔をあけて配置される。 The first screw member 15 extends in the first direction. The first screw member 15 includes a screw shaft portion 15a provided with a male screw portion on the outer periphery, and a screw head portion 15b having a larger outer diameter than the screw shaft portion 15a. The first screw member 15 fixes the first connecting member 10 to the inverter case 8. A plurality of first screw members 15 are provided. The plurality of first screw members 15 are arranged around the first opening hole 8c and spaced apart from each other along the inner periphery of the first opening hole 8c.
　第２ネジ部材１６は、第１方向に延びる。第２ネジ部材１６は、外周に雄ネジ部が設けられるネジ軸部１６ａと、ネジ軸部１６ａよりも外径が大きいネジ頭部１６ｂと、を有する。第２ネジ部材１６は、第２連結部材１４をハウジング６に固定する。第２ネジ部材１６は、複数設けられる。複数の第２ネジ部材１６は、第２開口孔６ｃの孔周りに、第２開口孔６ｃの内周に沿って互いに間隔をあけて配置される。 The second screw member 16 extends in the first direction. The second screw member 16 has a screw shaft portion 16a provided with a male screw portion on the outer periphery, and a screw head portion 16b having an outer diameter larger than that of the screw shaft portion 16a. The second screw member 16 fixes the second connecting member 14 to the housing 6. A plurality of second screw members 16 are provided. The plurality of second screw members 16 are disposed around the second opening hole 6c and spaced from each other along the inner periphery of the second opening hole 6c.
　本実施形態によれば、複数の第１ネジ部材１５によって、第１連結部材１０がインバータケース８に安定して固定される。複数の第２ネジ部材１６によって、第２連結部材１４がハウジング６に安定して固定される。インバータケース８に固定された第１連結部材１０と、ハウジング６に固定された第２連結部材１４とを組み合わせることで、ハウジング６とインバータケース８との組み立てが容易となる。 According to the present embodiment, the first connecting member 10 is stably fixed to the inverter case 8 by the plurality of first screw members 15. The second connecting member 14 is stably fixed to the housing 6 by the plurality of second screw members 16. By combining the first connecting member 10 fixed to the inverter case 8 and the second connecting member 14 fixed to the housing 6, the assembly of the housing 6 and the inverter case 8 is facilitated.
　第１方向から見て、複数の第１ネジ部材１５と複数の第２ネジ部材１６とは、重なり合わず交互に配列する。本実施形態によれば、複数の第１ネジ部材１５同士の間隔が大きく開き過ぎることが抑制されて、インバータケース８に対する第１連結部材１０の固定状態が安定する（固定強度が確保される）。複数の第２ネジ部材１６同士の間隔が大きく開き過ぎることが抑制されて、ハウジング６に対する第２連結部材１４の固定状態が安定する。第１方向から見て、第１ネジ部材１５と第２ネジ部材１６とが重なり合わないため、第１方向においてインバータケース８とハウジング６との間の距離を小さく抑えることができる。すなわち、インバータケース８とハウジング６との間の距離として、第１ネジ部材１５および第２ネジ部材１６のいずれかのネジ頭部１５ｂ，１６ｂの厚さ（第１方向の長さ）を収容可能な第１方向の長さを確保すればよい。したがって、モータユニット１を小型化できる。 When viewed from the first direction, the plurality of first screw members 15 and the plurality of second screw members 16 are alternately arranged without overlapping. According to this embodiment, it is suppressed that the space | interval of several 1st screw members 15 opens too much, and the fixed state of the 1st connection member 10 with respect to the inverter case 8 is stabilized (fixing strength is ensured). . It is suppressed that the space | interval of several 2nd screw members 16 opens too much, and the fixed state of the 2nd connection member 14 with respect to the housing 6 is stabilized. Since the first screw member 15 and the second screw member 16 do not overlap each other when viewed from the first direction, the distance between the inverter case 8 and the housing 6 in the first direction can be kept small. That is, as the distance between the inverter case 8 and the housing 6, the thickness (length in the first direction) of the screw heads 15b, 16b of either the first screw member 15 or the second screw member 16 can be accommodated. What is necessary is just to ensure the length of the 1st direction. Therefore, the motor unit 1 can be reduced in size.
　第１方向から見て、複数の第１ネジ部材１５と、複数の第２ネジ部材１６とは、第１方向に直交する対称軸に関して、線対称に配置される。具体的には、図７に示すように第１方向から見て、複数（４つ）の第１ネジ部材１５と、複数（４つ）の第２ネジ部材１６とは、第１シール部１１（第２シール部１２でもよい）の中心を通るＺ軸（対称軸）に関して、線対称に配置される。また、複数の第１ネジ部材１５と、複数の第２ネジ部材１６とは、第１シール部１１の中心を通るＹ軸（対称軸）に関して、線対称に配置される。本実施形態によれば、第１連結部材１０の第１フランジ部１０ｈと、第２連結部材１４の第２フランジ部１４ｆとを、第１方向から見て線対称形状とすることができる。したがって、各部材の製造および組み立てが容易となる。 When viewed from the first direction, the plurality of first screw members 15 and the plurality of second screw members 16 are arranged in line symmetry with respect to the symmetry axis orthogonal to the first direction. Specifically, as shown in FIG. 7, when viewed from the first direction, the plurality (four) of first screw members 15 and the plurality of (four) second screw members 16 include the first seal portion 11. With respect to the Z axis (symmetric axis) passing through the center of the second seal portion 12, the second seal portion 12 may be arranged line-symmetrically. Further, the plurality of first screw members 15 and the plurality of second screw members 16 are arranged in line symmetry with respect to the Y axis (symmetry axis) passing through the center of the first seal portion 11. According to this embodiment, the 1st flange part 10h of the 1st connection member 10 and the 2nd flange part 14f of the 2nd connection member 14 can be made into a line symmetrical shape seeing from a 1st direction. Therefore, manufacture and assembly of each member become easy.
　本実施形態では、第１ネジ部材１５は４つ設けられる。第１方向から見て、４つの第１ネジ部材１５を線分（第１仮想線分Ｌ１）で結ぶ形状は、各第１ネジ部材１５を角部とする平行四辺形である。第２ネジ部材１６は４つ設けられる。第１方向から見て、４つの第２ネジ部材１６を線分（第２仮想線分Ｌ２）で結ぶ形状は、各第２ネジ部材１６を角部とする平行四辺形である。本実施形態によれば、第１フランジ部１０ｈおよび第２フランジ部１４ｆの各外形をコンパクトに抑えることができる。第１ネジ部材１５を第１シール部１１に近づけて配置でき、第１シール部１１のシール機能を安定させることができる。第２ネジ部材１６を第２シール部１２に近づけて配置でき、第２シール部１２のシール機能を安定させることができる。第１ネジ部材１５および第２ネジ部材１６による各固定強度がより安定する。 In the present embodiment, four first screw members 15 are provided. When viewed from the first direction, the shape connecting the four first screw members 15 with line segments (first imaginary line segments L1) is a parallelogram having the first screw members 15 as corners. Four second screw members 16 are provided. When viewed from the first direction, the shape connecting the four second screw members 16 with a line segment (second imaginary line segment L2) is a parallelogram having each second screw member 16 as a corner. According to the present embodiment, the outer shapes of the first flange portion 10h and the second flange portion 14f can be kept compact. The first screw member 15 can be disposed close to the first seal portion 11, and the sealing function of the first seal portion 11 can be stabilized. The second screw member 16 can be disposed close to the second seal portion 12, and the sealing function of the second seal portion 12 can be stabilized. Each fixing strength by the 1st screw member 15 and the 2nd screw member 16 becomes more stable.
　図８は、本実施形態の変形例を示す。この変形例では、第１ネジ部材１５および第２ネジ部材１６が各３つ設けられる。第１方向から見て、３つの第１ネジ部材１５を線分（第１仮想線分Ｌ１）で結ぶ形状は、各第１ネジ部材１５を角部とする二等辺三角形であり、３つの第２ネジ部材１６を線分（第２仮想線分Ｌ２）で結ぶ形状は、各第２ネジ部材１６を角部とする二等辺三角形である。この場合、第１ネジ部材１５および第２ネジ部材１６の各数量を削減でき、組み立てが容易である。 FIG. 8 shows a modification of the present embodiment. In this modification, three first screw members 15 and three second screw members 16 are provided. The shape connecting the three first screw members 15 with a line segment (first imaginary line segment L1) when viewed from the first direction is an isosceles triangle with each first screw member 15 as a corner, The shape connecting the two screw members 16 with a line segment (second imaginary line segment L2) is an isosceles triangle with each second screw member 16 as a corner. In this case, each quantity of the 1st screw member 15 and the 2nd screw member 16 can be reduced, and an assembly is easy.
　また本実施形態のように、インバータケース８とモータ収容部６ａとが、モータ軸Ｊ２の径方向に隣り合って配置される場合には、これらの部材に跨るバスバー９の支持構造の組み立てを容易にしつつ、第２開口孔６ｃおよび第１開口孔８ｃのシール性を確保することは難しい。本実施形態によれば、バスバー９の支持構造の組み立てが容易であり、かつ、第２開口孔６ｃおよび第１開口孔８ｃのシール性が確保される。 Moreover, when the inverter case 8 and the motor housing portion 6a are arranged adjacent to each other in the radial direction of the motor shaft J2 as in the present embodiment, the assembly of the support structure for the bus bar 9 straddling these members is easy. However, it is difficult to ensure the sealing performance of the second opening hole 6c and the first opening hole 8c. According to this embodiment, assembly of the support structure of the bus bar 9 is easy, and the sealing performance of the second opening hole 6c and the first opening hole 8c is ensured.
　また本実施形態では、インバータケース８とモータ収容部６ａとが、水平方向に隣り合うので、モータユニット１の鉛直方向（重力方向）の外形寸法を小さく抑えられる。このため、モータユニット１を車両等の限られた設置スペースに収容しやすい。 In the present embodiment, since the inverter case 8 and the motor housing 6a are adjacent to each other in the horizontal direction, the external dimension of the motor unit 1 in the vertical direction (gravity direction) can be kept small. For this reason, it is easy to accommodate the motor unit 1 in a limited installation space such as a vehicle.
＜第２実施形態＞
　次に、本発明の第２実施形態のモータユニット１００について、図９～図１３を参照して説明する。なお、第２実施形態では、第１実施形態と同じ構成要素については同じ符号を付して、その説明を省略する。また第２実施形態では、第１実施形態で説明したモータユニット１の製造方法と同じ工程については、その説明を省略する。 Second Embodiment
Next, a motor unit 100 according to a second embodiment of the present invention will be described with reference to FIGS. Note that in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the second embodiment, the description of the same steps as those of the method for manufacturing the motor unit 1 described in the first embodiment is omitted.
　本実施形態のモータユニット１００は、前述の実施形態で説明したモータユニット１とは、第１連結部材１０、第２連結部材１４、第３シール部１３、バスバー９および配線部材３３等の構成が異なる。 The motor unit 100 of the present embodiment is different from the motor unit 1 described in the above-described embodiments in the configuration of the first connecting member 10, the second connecting member 14, the third seal portion 13, the bus bar 9, the wiring member 33, and the like. Different.
　図９～図１１に示すように、本実施形態の第１連結部材１０は、バスバー固定部１０ｃのうち仕切り壁部１０ｄから第１方向一方側に向けて延びる部分と、挿入部１０ｂとが、第１方向と直交する方向において互いに接続する。すなわち、バスバー固定部１０ｃのうち仕切り壁部１０ｄから第１方向一方側に向けて延びる部分と、第１方向から見てこの部分を外側から囲う挿入部１０ｂとが、全体として第１方向に延びる１つの柱状をなすように、一体に設けられる。 As shown in FIGS. 9 to 11, the first connecting member 10 of the present embodiment includes a portion extending from the partition wall portion 10d toward the first direction in the first direction in the bus bar fixing portion 10c, and the insertion portion 10b. They are connected to each other in a direction orthogonal to the first direction. That is, a portion of the bus bar fixing portion 10c that extends from the partition wall portion 10d toward the one side in the first direction and an insertion portion 10b that surrounds the portion from the outside when viewed from the first direction extend in the first direction as a whole. It is provided integrally so as to form one column.
　挿入部１０ｂは、挿入部１０ｂの外周面に設けられ第１方向に延びる複数のガイドリブ１０ｐを有する。複数のガイドリブ１０ｐは、挿入部１０ｂの外周面の周方向に沿って互いに間隔をあけて配置される。本実施形態ではガイドリブ１０ｐが、挿入部１０ｂの外周面のうち、第２方向一方側（＋Ｚ方向）を向く部分、第２方向他方側（－Ｚ方向）を向く部分、軸方向一方側（＋Ｙ方向）を向く部分および軸方向他方側（－Ｙ方向）を向く部分に、それぞれ配置される。ガイドリブ１０ｐは、第１方向から見て外側（第２開口孔６ｃの内周面側）を向く頂面１０ｑを有する。頂面１０ｑは、例えば平面状である。 The insertion portion 10b has a plurality of guide ribs 10p provided on the outer peripheral surface of the insertion portion 10b and extending in the first direction. The plurality of guide ribs 10p are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the insertion portion 10b. In the present embodiment, the guide rib 10p is a portion of the outer peripheral surface of the insertion portion 10b facing the one side in the second direction (+ Z direction), a portion facing the other side in the second direction (−Z direction), and one side in the axial direction (+ Y Direction) and a portion facing the other side in the axial direction (−Y direction). The guide rib 10p has a top surface 10q that faces the outside (the inner peripheral surface side of the second opening hole 6c) when viewed from the first direction. The top surface 10q is planar, for example.
　本実施形態の第２連結部材１４は、内筒部１４ｃおよび連結壁部１４ｄを有さない。このため第２連結部材１４が簡素な構成とされ、部材を製作しやすい。図９および図１２に示すように、ガイド筒部１４ａは、ガイド筒部１４ａの内周面に設けられ第１方向に延びる複数のガイド溝１４ｍを有する。複数のガイド溝１４ｍは、ガイド筒部１４ａの内周面の周方向に沿って互いに間隔をあけて配置される。本実施形態ではガイド溝１４ｍが、ガイド筒部１４ａの内周面のうち、第２方向一方側（＋Ｚ方向）を向く部分、第２方向他方側（－Ｚ方向）を向く部分、軸方向一方側（＋Ｙ方向）を向く部分および軸方向他方側（－Ｙ方向）を向く部分に、それぞれ配置される。ガイド溝１４ｍは、第１方向から見て内側（バスバー９側）を向く底面１４ｎを有する。底面１４ｎは、例えば平面状である。 The second connecting member 14 of the present embodiment does not have the inner cylinder portion 14c and the connecting wall portion 14d. For this reason, the 2nd connection member 14 is set as a simple structure, and it is easy to manufacture a member. As shown in FIGS. 9 and 12, the guide tube portion 14a has a plurality of guide grooves 14m provided on the inner peripheral surface of the guide tube portion 14a and extending in the first direction. The plurality of guide grooves 14m are arranged at intervals from each other along the circumferential direction of the inner peripheral surface of the guide cylinder portion 14a. In the present embodiment, the guide groove 14m is a portion of the inner peripheral surface of the guide cylinder portion 14a that faces the second direction one side (+ Z direction), a portion that faces the second direction other side (−Z direction), and one axial direction. Arranged in a portion facing the side (+ Y direction) and a portion facing the other side in the axial direction (−Y direction). The guide groove 14m has a bottom surface 14n facing inward (bus bar 9 side) when viewed from the first direction. The bottom surface 14n has a planar shape, for example.
　ガイド筒部１４ａ内に挿入部１０ｂを挿入するときに、各ガイドリブ１０ｐは、各ガイド溝１４ｍに第１方向から差し込まれる。つまり各ガイドリブ１０ｐは、各ガイド溝１４ｍに配置される。ガイド筒部１４ａ内に挿入部１０ｂが挿入されると、頂面１０ｑと底面１４ｎとが互いに対向する。ガイド筒部１４ａの内周面と挿入部１０ｂの外周面との隙間の寸法に対して、ガイド溝１４ｍの底面１４ｎとガイドリブ１０ｐの頂面１０ｑとの隙間の寸法は小さい。 When inserting the insertion portion 10b into the guide tube portion 14a, each guide rib 10p is inserted into each guide groove 14m from the first direction. That is, each guide rib 10p is disposed in each guide groove 14m. When the insertion portion 10b is inserted into the guide tube portion 14a, the top surface 10q and the bottom surface 14n face each other. The size of the gap between the bottom surface 14n of the guide groove 14m and the top surface 10q of the guide rib 10p is smaller than the size of the gap between the inner peripheral surface of the guide cylinder portion 14a and the outer peripheral surface of the insertion portion 10b.
　本実施形態では、ガイド筒部１４ａのガイド溝１４ｍに挿入部１０ｂのガイドリブ１０ｐが配置されることにより、ガイド筒部１４ａと挿入部１０ｂとの嵌め合いが安定し、がたつきが抑制される。また、第１方向と直交する方向から固定部材６ｆをねじ込んでハウジング６とインバータケース８とを固定する際に、ガイド溝１４ｍの底面１４ｎとガイドリブ１０ｐの頂面１０ｑとが接触することにより、ガイド筒部１４ａの内周面と挿入部１０ｂの外周面との隙間の寸法が全周にわたり一定に維持される。すなわち、ガイド筒部１４ａの内周面と挿入部１０ｂの外周面との隙間の寸法が、周方向の各位置でばらつくことが抑制される。このため、第３シール部１３によるシール性が全周にわたって安定する。例えば本実施形態とは異なり、ガイド筒部１４ａの内周面と挿入部１０ｂの外周面との嵌め合い公差が全周にわたって小さくされるような高精度を必要とする構成に比べて、本実施形態によれば、ガイド筒部１４ａ内に挿入部１０ｂを挿入しやすく、第１連結部材１０と第２連結部材１４とを組み立てやすい。また第１連結部材１０および第２連結部材１４を成形する各金型に高い精度が要求されることは抑えられて、金型費用が低減される。 In the present embodiment, the guide rib 10p of the insertion portion 10b is disposed in the guide groove 14m of the guide tube portion 14a, so that the fitting between the guide tube portion 14a and the insertion portion 10b is stabilized and rattling is suppressed. . Further, when fixing the housing 6 and the inverter case 8 by screwing the fixing member 6f from the direction orthogonal to the first direction, the bottom surface 14n of the guide groove 14m and the top surface 10q of the guide rib 10p come into contact with each other, thereby guiding the guide. The size of the gap between the inner peripheral surface of the cylindrical portion 14a and the outer peripheral surface of the insertion portion 10b is kept constant over the entire circumference. That is, it is suppressed that the dimension of the clearance gap between the inner peripheral surface of the guide cylinder part 14a and the outer peripheral surface of the insertion part 10b varies at each position in the circumferential direction. For this reason, the sealing performance by the third seal portion 13 is stabilized over the entire circumference. For example, unlike the present embodiment, this embodiment is compared with a configuration that requires high accuracy such that the fitting tolerance between the inner peripheral surface of the guide tube portion 14a and the outer peripheral surface of the insertion portion 10b is reduced over the entire circumference. According to the form, it is easy to insert the insertion portion 10b into the guide tube portion 14a, and it is easy to assemble the first connection member 10 and the second connection member 14. Moreover, it is suppressed that the high precision is requested | required of each metal mold | die which shape | molds the 1st connection member 10 and the 2nd connection member 14, and metal mold | die cost is reduced.
　本実施形態の第３シール部１３は、断面Ｄ字状のＤリング等である。このため、第３シール部１３が第３溝部１０ｋ内においてねじれることは抑制されて、第３シール部１３によるシール性がより安定する。 The third seal portion 13 of the present embodiment is a D ring or the like having a D-shaped cross section. For this reason, it is suppressed that the 3rd seal part 13 twists in the 3rd groove part 10k, and the sealing performance by the 3rd seal part 13 is stabilized more.
　図９に２点鎖線で示すように、配線部材３３の第１方向他方側の端部３３ｂは、第１方向他方側（－Ｘ方向）へ向かうに従い第２方向一方側（＋Ｚ方向）に位置する。本実施形態では配線部材３３およびバスバー９の少なくともいずれかが、弾性変形可能であり、配線ネジ部１８とナット部１９とをねじ止めすることで、配線部材３３の端部３３ｂの板面とバスバー９の端部９ｄの板面とが接触する。 As shown by a two-dot chain line in FIG. 9, the end 33b on the other side in the first direction of the wiring member 33 is positioned on one side in the second direction (+ Z direction) as it goes to the other side in the first direction (−X direction). To do. In this embodiment, at least one of the wiring member 33 and the bus bar 9 can be elastically deformed, and the plate surface of the end portion 33b of the wiring member 33 and the bus bar can be secured by screwing the wiring screw portion 18 and the nut portion 19. 9 is in contact with the plate surface of the end portion 9d.
　本実施形態によれば、バスバー９を第２開口孔６ｃ内に挿入する際、バスバー９の第１方向一方側の端部９ｄが、配線部材３３の第１方向他方側の端部３３ｂにつかえることが抑制される。すなわち、バスバー９の第１方向一方側の端部９ｄの先端が配線部材３３の第１方向他方側の端部３３ｂの先端に当たることが抑えられ、バスバー９がハウジング６内の所定の位置まで安定して挿入される。したがって、組み立て作業性がよい。また上述のように組み立て作業性を高めつつも、配線部材３３およびバスバー９の少なくともいずれかが弾性変形可能であるので、配線ネジ部１８をナット部１９にねじ止めすることにより、配線部材３３とバスバー９との接触面積が安定して確保される。 According to the present embodiment, when the bus bar 9 is inserted into the second opening hole 6 c, the end portion 9 d on the one side in the first direction of the bus bar 9 can be held by the end portion 33 b on the other side in the first direction of the wiring member 33. It is suppressed. That is, the tip of the end 9d on the one side in the first direction of the bus bar 9 is prevented from hitting the tip of the end 33b on the other side in the first direction of the wiring member 33, and the bus bar 9 is stabilized to a predetermined position in the housing 6. Inserted. Therefore, the assembly workability is good. Further, since at least one of the wiring member 33 and the bus bar 9 can be elastically deformed while improving the assembly workability as described above, by screwing the wiring screw portion 18 to the nut portion 19, A stable contact area with the bus bar 9 is ensured.
　図１３は、本実施形態の変形例を示す。この変形例では、バスバー９の第１方向一方側の端部９ｄが、第１方向一方側（＋Ｘ方向）へ向かうに従い第２方向他方側（－Ｚ方向）に位置する。この変形例によれば、上述のように組み立て作業性を高めつつも、配線部材３３およびバスバー９の弾性変形量が小さく抑えられる。このため、配線部材３３、バスバー９およびこれらの周辺部材等に生じる応力が抑制される。 FIG. 13 shows a modification of the present embodiment. In this modification, the end 9d on one side in the first direction of the bus bar 9 is positioned on the other side in the second direction (−Z direction) as it goes toward the one side in the first direction (+ X direction). According to this modification, the amount of elastic deformation of the wiring member 33 and the bus bar 9 can be kept small while improving the assembly workability as described above. For this reason, the stress which arises in the wiring member 33, the bus bar 9, these peripheral members, etc. is suppressed.
　なお、本発明は前述の実施形態に限定されず、例えば下記に説明するように、本発明の趣旨を逸脱しない範囲において構成の変更等が可能である。 It should be noted that the present invention is not limited to the above-described embodiment, and, for example, as described below, the configuration can be changed without departing from the spirit of the present invention.
　前述の第１実施形態では、第２連結部材１４が内筒部１４ｃを有するが、これに限らない。例えば、第２開口孔６ｃの内部がオイルＯに浸かる構成の場合には、第２連結部材１４が内筒部１４ｃを有さないことが好ましい。 In the above-described first embodiment, the second connecting member 14 has the inner cylinder portion 14c, but is not limited thereto. For example, in the case where the inside of the second opening hole 6c is immersed in the oil O, it is preferable that the second connecting member 14 does not have the inner cylinder portion 14c.
　第１シール部１１は、Ｏリングでなくてもよい。第１シール部１１は、液状でもよく、ゲル状でもよい。第１シール部１１は、シリコーン樹脂製でもよい。第１シール部１１は、弾性変形不能でもよい。第１シール部１１と第１連結部材１０とが、２色成形により作製された単一の部材の部分であってもよい。 The first seal part 11 may not be an O-ring. The first seal portion 11 may be liquid or gel. The first seal portion 11 may be made of silicone resin. The first seal portion 11 may not be elastically deformable. The first seal portion 11 and the first connecting member 10 may be a single member portion produced by two-color molding.
　第２シール部１２は、Ｏリングでなくてもよい。第２シール部１２は、液状でもよく、ゲル状でもよい。第２シール部１２は、シリコーン樹脂製でもよい。第２シール部１２は、弾性変形不能でもよい。第２シール部１２と第２連結部材１４とが、２色成形により作製された単一の部材の部分であってもよい。 The second seal portion 12 may not be an O-ring. The second seal portion 12 may be liquid or gel. The second seal portion 12 may be made of silicone resin. The second seal portion 12 may not be elastically deformable. The second seal portion 12 and the second connecting member 14 may be a single member portion produced by two-color molding.
　第３シール部１３は、Ｏリングでなくてもよい。第３シール部１３は、液状でもよく、ゲル状でもよい。第３シール部１３は、シリコーン樹脂製でもよい。第３シール部１３は、弾性変形不能でもよい。第３シール部１３と第１連結部材１０とが、２色成形により作製された単一の部材の部分であってもよい。 The third seal portion 13 may not be an O-ring. The third seal portion 13 may be liquid or gel. The third seal portion 13 may be made of silicone resin. The third seal portion 13 may not be elastically deformable. The third seal portion 13 and the first connecting member 10 may be a single member portion produced by two-color molding.
　その他、本発明の趣旨から逸脱しない範囲において、前述の実施形態、変形例およびなお書き等で説明した各構成（構成要素）を組み合わせてもよく、また、構成の付加、省略、置換、その他の変更が可能である。また本発明は、前述した実施形態によって限定されず、特許請求の範囲によってのみ限定される。 In addition, in the range which does not deviate from the meaning of this invention, you may combine each structure (component) demonstrated by the above-mentioned embodiment, a modification, and a note, etc., addition of a structure, omission, substitution, others It can be changed. Further, the present invention is not limited by the above-described embodiments, but is limited only by the scope of the claims.
　１…モータユニット、２…モータ、６…ハウジング、６ｃ…第２開口孔、６ｆ…固定部材、６ｊ…作業用孔部、７…インバータ、８…インバータケース、８ｃ…第１開口孔、９…バスバー、９ｃ…貫通孔、９ｄ…バスバーの第１方向一方側の端部、１０…第１連結部材、１０ａ…取付け筒部、１０ｂ…挿入部、１０ｃ…バスバー固定部、１０ｄ…仕切り壁部、１０ｅ…第１溝部、１０ｆ…ナット保持部、１０ｎ…第１クラッシュリブ、１０ｐ…ガイドリブ、１０ｑ…頂面、１１…第１シール部、１２…第２シール部、１３…第３シール部、１４…第２連結部材、１４ａ…ガイド筒部、１４ｋ…第２クラッシュリブ、１４ｍ…ガイド溝、１４ｎ…底面、１５…第１ネジ部材、１７…蓋部、１８…配線ネジ部、１９…ナット部、３３…モータの配線部材、３３ｂ…配線部材の第１方向他方側の端部、ＨＡ…作業用孔部の中心軸、ＳＡ…配線ネジ部のネジ軸 DESCRIPTION OF SYMBOLS 1 ... Motor unit, 2 ... Motor, 6 ... Housing, 6c ... 2nd opening hole, 6f ... Fixing member, 6j ... Work hole, 7 ... Inverter, 8 ... Inverter case, 8c ... 1st opening hole, 9 ... Bus bar, 9c ... through hole, 9d ... one end of bus bar in the first direction, 10 ... first connecting member, 10a ... mounting tube portion, 10b ... insertion portion, 10c ... bus bar fixing portion, 10d ... partition wall portion, 10e ... 1st groove part, 10f ... Nut holding part, 10n ... 1st crush rib, 10p ... Guide rib, 10q ... Top surface, 11 ... 1st seal part, 12 ... 2nd seal part, 13 ... 3rd seal part, 14 ... 2nd connection member, 14a ... Guide cylinder part, 14k ... 2nd crush rib, 14m ... Guide groove, 14n ... Bottom face, 15 ... 1st screw member, 17 ... Cover part, 18 ... Wiring screw part, 19 ... Nut part 33 ... of the motor Line member, 33b ... end portion of the first direction other side of the wiring member, HA ... center axis of the working hole, SA ... screw shaft wiring threaded portion

Claims (25)

  1. 　モータと、
    　前記モータと電気的に接続されるインバータと、
    　第１方向に延びる部分を有し、前記モータと前記インバータとを接続するバスバーと、
    　前記バスバーが通される第１開口孔を有し、前記インバータが収容されるインバータケースと、
    　前記インバータケースに固定されて前記第１開口孔を塞ぎ、前記バスバーを支持する第１連結部材と、
    　前記第１開口孔と前記第１方向に対向する第２開口孔を有し、前記モータが収容されるハウジングと、を備え、
    　前記バスバーが、前記第２開口孔に挿入される、モータユニット。     A motor,
    An inverter electrically connected to the motor;
    A bus bar having a portion extending in a first direction and connecting the motor and the inverter;
    An inverter case having a first opening hole through which the bus bar is passed, and accommodating the inverter;
    A first connecting member fixed to the inverter case, closing the first opening hole, and supporting the bus bar;
    A housing having a second opening hole facing the first opening hole in the first direction, and housing the motor;
    The motor unit, wherein the bus bar is inserted into the second opening hole.
  2. 　請求項１に記載のモータユニットであって、
    　前記第１方向において前記インバータケースと前記第１連結部材との間に配置され、前記インバータケースおよび前記第１連結部材に接触する第１シール部を備える、モータユニット。     The motor unit according to claim 1,
    A motor unit provided with the 1st seal part which is arranged between the inverter case and the 1st connecting member in the 1st direction, and contacts the inverter case and the 1st connecting member.
  3. 　請求項２に記載のモータユニットであって、
    　前記第１シール部は、前記第１方向から見て、前記第１開口孔を囲む環状である、モータユニット。     The motor unit according to claim 2,
    The motor unit, wherein the first seal portion is an annular shape surrounding the first opening hole when viewed from the first direction.
  4. 　請求項２または３に記載のモータユニットであって、
    　前記第１方向から見て、前記第１連結部材は、前記第１連結部材の前記インバータケースと対向する面に、前記第１開口孔を囲む環状の第１溝部を有し、
    　前記第１シール部は、前記第１溝部に配置される、モータユニット。     The motor unit according to claim 2 or 3,
    As viewed from the first direction, the first connecting member has an annular first groove portion surrounding the first opening hole on a surface of the first connecting member facing the inverter case,
    The first seal part is a motor unit arranged in the first groove part.
  5. 　請求項１～４のいずれか一項に記載のモータユニットであって、
    　前記第１連結部材は、
    　前記バスバーの一部が埋め込まれて固定されるバスバー固定部と、
    　前記バスバー固定部を保持し、前記第１開口孔を塞ぐ仕切り壁部と、を有する、モータユニット。     The motor unit according to any one of claims 1 to 4,
    The first connecting member is
    A bus bar fixing part in which a part of the bus bar is embedded and fixed;
    A motor unit, comprising: a partition wall portion that holds the bus bar fixing portion and closes the first opening hole.
  6. 　請求項５に記載のモータユニットであって、
    　前記バスバーは、前記第１方向とは異なる方向に延びる部分を有し、
    　前記バスバーは、前記第１方向に延びる部分、および、前記第１方向とは異なる方向に延びる部分が前記バスバー固定部に埋め込まれて固定される、モータユニット。     The motor unit according to claim 5,
    The bus bar has a portion extending in a direction different from the first direction,
    The bus bar is a motor unit in which a portion extending in the first direction and a portion extending in a direction different from the first direction are embedded and fixed in the bus bar fixing portion.
  7. 　請求項１～６のいずれか一項に記載のモータユニットであって、
    　前記第１連結部材を前記インバータケースに固定する複数の第１ネジ部材を備える、モータユニット。     The motor unit according to any one of claims 1 to 6,
    A motor unit comprising a plurality of first screw members for fixing the first connecting member to the inverter case.
  8. 　請求項１～７のいずれか一項に記載のモータユニットであって、
    　前記第１連結部材は、前記第１開口孔内に嵌合する取付け筒部を有する、モータユニット。     The motor unit according to any one of claims 1 to 7,
    The first connecting member is a motor unit having an attachment tube portion that fits into the first opening hole.
  9. 　請求項８に記載のモータユニットであって、
    　前記取付け筒部は、前記取付け筒部の外周面に設けられ前記第１方向に延びる複数の第１クラッシュリブを有し、
    　複数の前記第１クラッシュリブは、前記取付け筒部の外周面の周方向に沿って互いに間隔をあけて配置され、
    　前記第１クラッシュリブは、前記取付け筒部の外周面と前記第１開口孔の内周面との間で潰される、モータユニット。     The motor unit according to claim 8,
    The mounting cylinder part has a plurality of first crush ribs provided on an outer peripheral surface of the mounting cylinder part and extending in the first direction,
    The plurality of first crush ribs are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the mounting cylinder portion,
    The first crush rib is a motor unit that is crushed between an outer peripheral surface of the mounting cylinder and an inner peripheral surface of the first opening hole.
  10. 　請求項１～９のいずれか一項に記載のモータユニットであって、
    　前記バスバーは、前記バスバーを貫通する貫通孔を有し、
    　前記第１連結部材は、前記貫通孔に対向配置されるナット部を保持するナット保持部を有する、モータユニット。     The motor unit according to any one of claims 1 to 9,
    The bus bar has a through-hole penetrating the bus bar,
    The first connecting member is a motor unit having a nut holding portion that holds a nut portion disposed to face the through hole.
  11. 　請求項１～１０のいずれか一項に記載のモータユニットであって、
    　前記第２開口孔に挿入されるガイド筒部を有し、前記ハウジングに固定される第２連結部材と、
    　前記第１方向において前記ハウジングと前記第２連結部材との間に配置され、前記ハウジングおよび前記第２連結部材に接触する第２シール部と、を備え、
    　前記バスバーは、前記ガイド筒部内に挿入される、モータユニット。     The motor unit according to any one of claims 1 to 10,
    A second connecting member having a guide tube portion inserted into the second opening hole and fixed to the housing;
    A second seal portion disposed between the housing and the second connecting member in the first direction and contacting the housing and the second connecting member;
    The bus bar is a motor unit that is inserted into the guide tube portion.
  12. 　請求項１～１１のいずれか一項に記載のモータユニットであって、
    　前記インバータケースと前記ハウジングとを固定する固定部材を備え、
    　前記第１方向に直交する方向から見て、前記固定部材と前記バスバーとが重なって配置され、
    　前記ハウジングは、前記バスバーに向けて開口する作業用孔部を有し、
    　前記作業用孔部は、前記第１方向に直交する方向に向かうにしたがい、前記第１方向に向けて傾斜して延びる、モータユニット。     The motor unit according to any one of claims 1 to 11,
    A fixing member for fixing the inverter case and the housing;
    When viewed from a direction orthogonal to the first direction, the fixing member and the bus bar are arranged to overlap each other,
    The housing has a working hole that opens toward the bus bar;
    The motor unit, wherein the working hole is inclined and extended toward the first direction as it goes in a direction orthogonal to the first direction.
  13. 　請求項１２に記載のモータユニットであって、
    　前記第１方向のうち、前記第１開口孔から前記第２開口孔へ向かう方向を第１方向一方側とし、前記第２開口孔から前記第１開口孔へ向かう方向を第１方向他方側として、
    　前記作業用孔部は、前記第１方向に直交する方向において前記バスバーに近づくにしたがい、前記第１方向他方側に向けて傾斜して延びる、モータユニット。     The motor unit according to claim 12,
    Of the first directions, a direction from the first opening hole toward the second opening hole is a first direction one side, and a direction from the second opening hole to the first opening hole is a first direction other side. ,
    The working unit is a motor unit that extends in an inclined manner toward the other side in the first direction as it approaches the bus bar in a direction orthogonal to the first direction.
  14. 　請求項１２または１３に記載のモータユニットであって、
    　前記バスバーは、前記バスバーを貫通する貫通孔を有し、
    　前記作業用孔部は、前記ハウジングにおいて前記貫通孔に向けて開口する、モータユニット。     The motor unit according to claim 12 or 13,
    The bus bar has a through-hole penetrating the bus bar,
    The work hole is a motor unit that opens toward the through hole in the housing.
  15. 　請求項１２～１４のいずれか一項に記載のモータユニットであって、
    　前記作業用孔部を塞ぐ蓋部を備える、モータユニット。     The motor unit according to any one of claims 12 to 14,
    A motor unit comprising a lid for closing the work hole.
  16. 　請求項１２～１５のいずれか一項に記載のモータユニットであって、
    　前記バスバーと、前記モータの配線部材とを接続する配線ネジ部を備え、
    　前記配線ネジ部のネジ軸が、前記第１方向に直交する方向に延びる、モータユニット。     The motor unit according to any one of claims 12 to 15,
    A wiring screw portion connecting the bus bar and the wiring member of the motor;
    The motor unit, wherein a screw shaft of the wiring screw portion extends in a direction orthogonal to the first direction.
  17. 　請求項１２～１５のいずれか一項に記載のモータユニットであって、
    　前記バスバーと、前記モータの配線部材とを接続する配線ネジ部を備え、
    　前記配線ネジ部のネジ軸が、前記作業用孔部の中心軸に沿って延びる、モータユニット。     The motor unit according to any one of claims 12 to 15,
    A wiring screw portion connecting the bus bar and the wiring member of the motor;
    The motor unit, wherein a screw shaft of the wiring screw portion extends along a central axis of the working hole.
  18. 　請求項１～１７のいずれか一項に記載のモータユニットであって、
    　前記第１連結部材と前記第１方向に対向し、前記ハウジングに固定される第２連結部材を備え、
    　前記第２連結部材は、前記第２開口孔内に嵌合するガイド筒部を有し、
    　前記バスバーは、前記ガイド筒部内に挿入され、
    　前記ガイド筒部は、前記ガイド筒部の外周面に設けられ前記第１方向に延びる複数の第２クラッシュリブを有し、
    　複数の前記第２クラッシュリブは、前記ガイド筒部の外周面の周方向に沿って互いに間隔をあけて配置され、
    　前記第２クラッシュリブは、前記ガイド筒部の外周面と前記第２開口孔の内周面との間で潰される、モータユニット。     The motor unit according to any one of claims 1 to 17,
    A second coupling member facing the first coupling member in the first direction and fixed to the housing;
    The second connecting member has a guide tube portion that fits into the second opening hole,
    The bus bar is inserted into the guide tube portion,
    The guide tube portion has a plurality of second crush ribs provided on an outer peripheral surface of the guide tube portion and extending in the first direction,
    The plurality of second crush ribs are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the guide tube portion,
    The second crush rib is a motor unit that is crushed between an outer peripheral surface of the guide tube portion and an inner peripheral surface of the second opening hole.
  19. 　請求項１～１８のいずれか一項に記載のモータユニットであって、
    　前記第１連結部材と前記第１方向に対向し、前記ハウジングに固定される第２連結部材と、
    　前記第１連結部材と前記第２連結部材との間を封止する第３シール部と、を備え、
    　前記第２連結部材は、前記第２開口孔内に嵌合するガイド筒部を有し、
    　前記第１連結部材は、前記ガイド筒部内に挿入される挿入部を有し、
    　前記第３シール部は、前記ガイド筒部の内周面と前記挿入部の外周面との間を封止する、モータユニット。     The motor unit according to any one of claims 1 to 18,
    A second connecting member facing the first connecting member in the first direction and fixed to the housing;
    A third seal portion for sealing between the first connecting member and the second connecting member,
    The second connecting member has a guide tube portion that fits into the second opening hole,
    The first connecting member has an insertion portion that is inserted into the guide tube portion,
    The third seal portion is a motor unit that seals between an inner peripheral surface of the guide tube portion and an outer peripheral surface of the insertion portion.
  20. 　請求項１９に記載のモータユニットであって、
    　前記ガイド筒部は、前記ガイド筒部の内周面に設けられ前記第１方向に延びる複数のガイド溝を有し、
    　複数の前記ガイド溝は、前記ガイド筒部の内周面の周方向に沿って互いに間隔をあけて配置され、
    　前記挿入部は、前記挿入部の外周面に設けられ前記第１方向に延びる複数のガイドリブを有し、
    　複数の前記ガイドリブは、前記挿入部の外周面の周方向に沿って互いに間隔をあけて配置され、
    　各前記ガイドリブは、各前記ガイド溝に配置され、
    　前記ガイド筒部の内周面と前記挿入部の外周面との隙間の寸法に対して、前記ガイド溝の底面と前記ガイドリブの頂面との隙間の寸法が小さい、モータユニット。     The motor unit according to claim 19,
    The guide tube portion has a plurality of guide grooves provided on an inner peripheral surface of the guide tube portion and extending in the first direction,
    The plurality of guide grooves are arranged at intervals from each other along the circumferential direction of the inner peripheral surface of the guide tube portion,
    The insertion portion has a plurality of guide ribs provided on an outer peripheral surface of the insertion portion and extending in the first direction,
    The plurality of guide ribs are arranged at intervals from each other along the circumferential direction of the outer peripheral surface of the insertion portion,
    Each guide rib is disposed in each guide groove,
    The motor unit, wherein the size of the gap between the bottom surface of the guide groove and the top surface of the guide rib is smaller than the size of the gap between the inner circumferential surface of the guide tube portion and the outer circumferential surface of the insertion portion.
  21. 　請求項１～２０のいずれか一項に記載のモータユニットであって、
    　前記モータは、前記バスバーと接触する板状の配線部材を有し、
    　前記第１方向のうち、前記第１開口孔から前記第２開口孔へ向かう方向を第１方向一方側とし、前記第２開口孔から前記第１開口孔へ向かう方向を第１方向他方側として、
    　前記バスバーの前記第１方向一方側の端部と、前記配線部材の前記第１方向他方側の端部とは、前記第１方向と直交する第２方向に互いに重なり、
    　前記第２方向のうち、前記バスバーの前記第１方向一方側の端部から前記配線部材の前記第１方向他方側の端部へ向かう方向を第２方向一方側とし、前記配線部材の前記第１方向他方側の端部から前記バスバーの前記第１方向一方側の端部へ向かう方向を第２方向他方側として、
    　前記配線部材の前記第１方向他方側の端部は、前記第１方向他方側へ向かうに従い前記第２方向一方側に位置する、モータユニット。     The motor unit according to any one of claims 1 to 20,
    The motor has a plate-like wiring member that contacts the bus bar,
    Of the first directions, a direction from the first opening hole toward the second opening hole is a first direction one side, and a direction from the second opening hole to the first opening hole is a first direction other side. ,
    An end portion on one side in the first direction of the bus bar and an end portion on the other side in the first direction of the wiring member overlap each other in a second direction orthogonal to the first direction,
    Among the second directions, a direction from one end of the bus bar on one side in the first direction to an end on the other side in the first direction of the wiring member is defined as one side in the second direction, and the first of the wiring members. The direction from the end on the other side in one direction to the end on the one side in the first direction of the bus bar is defined as the other side in the second direction.
    The motor unit, wherein an end of the wiring member on the other side in the first direction is positioned on the one side in the second direction as it goes toward the other side in the first direction.
  22. 　請求項２１に記載のモータユニットであって、
    　前記配線部材および前記バスバーの少なくともいずれかが、弾性変形可能であり、
    　前記バスバーの前記第１方向一方側の端部の板面と前記配線部材の前記第１方向他方側の端部の板面とが、互いに接触する、モータユニット。     The motor unit according to claim 21, wherein
    At least one of the wiring member and the bus bar is elastically deformable,
    A motor unit in which a plate surface at one end in the first direction of the bus bar and a plate surface at the other end in the first direction of the wiring member are in contact with each other.
  23. 　請求項２１または２２に記載のモータユニットであって、
    　前記バスバーの前記第１方向一方側の端部は、前記第１方向一方側へ向かうに従い前記
    第２方向他方側に位置する、モータユニット。     The motor unit according to claim 21 or 22,
    An end of the bus bar on one side in the first direction is positioned on the other side in the second direction as it goes toward the one side in the first direction.
  24. 　インバータが収容されるインバータケースの第１開口孔に、バスバーを通し、前記インバータケースの外面から前記バスバーの一部を突出させて、前記インバータケースに前記バスバーを固定する工程と、
    　モータが収容されるハウジングの第２開口孔に、前記バスバーの一部を挿入する工程と、
    　前記ハウジング内において、前記バスバーと前記モータとを接続する工程と、を含む、モータユニットの製造方法。     Passing the bus bar through the first opening hole of the inverter case in which the inverter is accommodated, projecting a part of the bus bar from the outer surface of the inverter case, and fixing the bus bar to the inverter case;
    Inserting a part of the bus bar into the second opening hole of the housing in which the motor is accommodated;
    A method of manufacturing a motor unit, comprising: connecting the bus bar and the motor within the housing.
  25. 　請求項２４に記載のモータユニットの製造方法であって、
    　前記インバータケースに前記バスバーを固定する工程では、前記バスバーを支持する第１連結部材を前記インバータケースに固定して、前記第１連結部材により前記第１開口孔を塞ぐ、モータユニットの製造方法。     It is a manufacturing method of the motor unit according to claim 24,
    In the step of fixing the bus bar to the inverter case, the first connecting member that supports the bus bar is fixed to the inverter case, and the first opening hole is closed by the first connecting member.
PCT/JP2019/016852 2018-04-25 2019-04-19 Motor unit and method for manufacturing motor unit WO2019208445A1 (en)

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