WO2019208445A1 - Motor unit and method for manufacturing motor unit - Google Patents
Motor unit and method for manufacturing motor unit Download PDFInfo
- 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
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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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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
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.
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.
<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、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 amotor 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.
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
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, amotor 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.
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
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)
- 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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. - 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.
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CN112075013B (en) | 2023-08-18 |
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