WO1999041822A1 - Open type electric motor for driving vehicle - Google Patents

Open type electric motor for driving vehicle Download PDF

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Publication number
WO1999041822A1
WO1999041822A1 PCT/JP1999/000617 JP9900617W WO9941822A1 WO 1999041822 A1 WO1999041822 A1 WO 1999041822A1 JP 9900617 W JP9900617 W JP 9900617W WO 9941822 A1 WO9941822 A1 WO 9941822A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
stator
rotor
bracket
open
Prior art date
Application number
PCT/JP1999/000617
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroaki Mita
Seikichi Masuda
Hayato Imai
Original Assignee
Hitachi, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi, Ltd. filed Critical Hitachi, Ltd.
Priority to JP2000531897A priority Critical patent/JP3211826B2/en
Publication of WO1999041822A1 publication Critical patent/WO1999041822A1/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/02Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225Terminal boxes or connection arrangements
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/50Fastening of winding heads, equalising connectors, or connections thereto

Definitions

  • the present invention relates to an open-type electric motor for driving a vehicle, and more particularly to an open-type electric motor for driving a vehicle that is suitable for removing dust contained in cooling air.
  • the former motor is the mainstream of open-type motors for vehicle driving, but recently there have been various demands on this motor, such as prolonged maintenance return and low noise. High demands. This demand is high because, in the former motor, dust that cannot be removed by the filter penetrates into the machine due to the incomplete removal function of the filter, which accumulates in the machine over a long period of operation, and this is removed. This is because it is necessary to disassemble and clean every 5 or 6 years to remove it.
  • the inventor can remove dust without using a filter.
  • the latter motor forms two rooms, it is necessary to increase the size of the motor in the axial direction, and the structure for removing dust becomes complicated, which may increase the fault potential.
  • the dust contained in the cooling air is removed through the two rooms, the room closer to the cabin cannot be omitted. If the room close to the cabin is omitted, the dust contained in the cooling air will enter the cabin and accumulate in the cabin over a long period of operation. Is required.
  • the cooling air intake is opened in a direction perpendicular to the radial direction, so that the incoming cooling air bends in a direction perpendicular to the inlet direction. For this reason, the loss of cooling air increases, and it is necessary to increase the diameter of the cooling fan in order to secure the amount of air required for cooling. If the diameter of the cooling fan is too large, noise will be noticeable.
  • the present invention has been made in view of the above points, and the first of its typical objects is to provide an open-type motor for driving a vehicle, which can extend maintenance return.
  • the second of the typical purposes is to provide a highly reliable open-type motor for vehicle drive that can extend maintenance return without increasing the failure potential.
  • the third typical purpose is to provide an open-type motor for driving a vehicle, which can improve the cooling efficiency of the bearing device on the exhaust side of the cooling air, for example, suppress the temperature rise.
  • An open-type electric motor for driving a vehicle includes a stator provided inside a stator frame, a rotor provided inside the stator, and a rotating shaft of the rotor. Bearing, a bracket provided at an end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket comprises a stator frame and a bearing.
  • the fan has a shape that protrudes toward the anti-core side between the device and the fan. .
  • An open-type motor for driving a vehicle includes a stator provided inside a stator frame, a rotor provided inside the stator, and a bearing device for supporting a rotating shaft of the rotor. And a bracket provided at the end of the stator frame, and a fan provided at the rotating shaft between the rotor and the bearing device.
  • An outer peripheral surface extending toward the direction opposite to the iron core, an inner peripheral surface extending substantially from the connection with the bearing device toward the opposite axial core, and a side surface provided between the outer peripheral surface and the inner peripheral surface.
  • the fan and the fan are provided on the bracket side of the fan main plate, the fan main plate including a portion parallel to the side surface portion of the bracket and an inclined portion from the parallel portion to the connection portion with the rotating shaft, and the outer peripheral surface portion of the bracket. Fan placed in the space surrounded by the inner peripheral surface and side surface It consists of vanes.
  • the open-type motor for driving a vehicle is a bearing device that supports a stator provided inside a stator frame, a rotor provided inside the stator, and a rotating shaft of the rotor. And a bracket provided at an end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket is provided between the stator frame and the bearing device.
  • the fan has a shape protruding toward the anti-core side, and the fan is composed of a fan main plate provided at an angle to the bracket side and a fan van provided at the bracket side of the fan main plate.
  • An open-type motor for driving a vehicle includes a stator provided inside a stator frame, a rotor provided inside the stator, and a rotating shaft of the rotor.
  • Bearing a bracket provided at the end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket comprises a stator frame and a bearing.
  • the fan has a shape that protrudes toward the anti-core side between the fan and the fan.
  • a separation plate for cooling air is provided on the outside diameter side of the.
  • An open-type electric motor for driving a vehicle includes a stator provided inside a stator frame, a rotor provided inside the stator, and a bearing device for supporting a rotating shaft of the rotor. And a bracket provided at an end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket is provided between the stator frame and the bearing device.
  • the fan has a shape protruding toward the anti-core side, and the fan consists of a fan main plate and a fan van provided on the bracket side of the fan main plate and arranged in the space where the bracket overhangs.
  • a cooling air inlet is provided on the side.
  • a vehicle drive-open type electric motor includes a stator provided inside a stator frame, a rotor provided inside the stator, and a bearing device for supporting a rotating shaft of the rotor. And a bracket provided at an end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket is provided between the stator frame and the bearing device.
  • the fan has a shape that protrudes toward the anti-core side, and the fan is composed of a fan main plate and a fan fan provided on the bracket side of the fan main plate and arranged in the space where the bracket protrudes.
  • a cooling air intake port is provided on the side, and an outlet for cooling air containing dust is provided on the outer diameter side of the fan vane.
  • the separation plate is a ring-shaped plate having an inner diameter larger than the outer diameter of the fan main plate.
  • the distance between the inner diameter side of the fan vane and the air inlet is 3 O ram or more.
  • the number of fan vanes and the number of the air inlets are set to numbers that cannot be divided.
  • an auxiliary fan is provided on a cooling air discharge side.
  • the auxiliary fan shall be one whose main plate extends radially along the shape of the bearing cover provided on the cooling air discharge side.
  • An open-type motor for driving a vehicle is a motor having a stator, a rotor provided inside the stator, and a fan provided on a rotating shaft of the rotor.
  • a bracket Closed by a bracket, one side of the bracket is provided with a cooling air inlet, one side of the bracket or the stator frame is provided with a first cooling air outlet, and the other side of the bracket or fixed
  • a second exhaust port for cooling air is provided in the slave frame, and an annular projection is formed on one of the brackets or on the inner periphery of the stator frame so as to face the outer diameter side of the fan.
  • the opening of the first exhaust port is arranged between the part and one of the brackets.
  • An open-type electric motor for driving a vehicle is a motor for driving a stator, which includes a stator, a rotor provided inside the stator, and a fan provided on a rotating shaft of the rotor.
  • a bracket Closed by a bracket, one side of the bracket is provided with a cooling air inlet, one side of the bracket or the stator frame is provided with a first cooling air outlet, and the other side of the bracket or fixed
  • a second exhaust port for cooling air is provided in the slave frame, and an annular protrusion is formed on one side of the bracket or on the inner periphery of the stator frame so as to face the outer diameter side of the fan.
  • the opening of the first exhaust port is located between the first exhaust port and one of the brackets, and the second inlet port provided on the first exhaust port and the second exhaust port side. Communicate them
  • a ventilation tube is provided.
  • the member comprises a separation plate including a separation plate for separating outside air taken in from the air inlet into outside air containing dust and outside air containing no dust.
  • One first outlet is provided on one outer peripheral surface of the bracket.
  • One of the brackets has a concave portion on the center side and a plurality of air inlets on the inner peripheral surface of the concave portion.
  • An open-type motor for driving a vehicle is a bearing device that supports a stator provided inside a stator frame, a rotor provided inside the stator, and a rotating shaft of the rotor. And a bracket provided at the end of the stator frame, a fan provided on the rotating shaft between the rotor and the bearing device, an air inlet for taking in outside air into the machine, It has a first exhaust port for exhausting outside air to the outside of the machine, and a member that extends to the inside diameter is provided at a portion facing the outside diameter of the fan, and this member is also provided inside the machine at the outside portion. A second exhaust port is provided to discharge the outside air taken into the outside of the machine.
  • An open-type electric motor for driving a vehicle includes a stator provided inside a stator frame, a rotor provided inside the stator, and a bearing device for supporting a rotating shaft of the rotor. And a bracket provided at the end of the stator frame, a fan provided on the rotating shaft between the rotor and the bearing device, an air inlet for taking in outside air into the machine, and an air intake into the machine
  • a first exhaust port for discharging outside air to the outside of the machine, a member that extends toward the inside diameter is provided at a portion facing the outside diameter side of the fan, and this member is also an outside portion.
  • a second exhaust port for exhausting outside air taken into the machine to the outside of the machine, and ventilation for communicating the second exhaust port with the second air inlet provided on the first exhaust port side A tube is provided.
  • the member is configured such that the outside air taken in from the air inlet is free of dust and outside air.
  • This is a separation mechanism that includes a separation plate that separates from outside air.
  • the open-type motor for driving a vehicle includes a stator, a rotor positioned inside the stator, one or two fans provided on a rotation shaft of the rotor, and
  • the housing includes a housing formed so as to be housed therein, and a closing member for closing one or both sides of the housing in the axial direction.
  • the closing member may also serve as a part of the housing.
  • Open the trachea open at least two vents or exhaust pipes in the obstruction or housing, place one of the vents or exhaust pipes on the intake or inlet side, and the other exhaust or exhaust pipe. Is installed so that it is located on the opposite side in the axial direction from the air inlet or the air inlet pipe.
  • the air inlet or the exhaust hole on the air inlet side is the second air outlet or the second air hole opened on the exhaust pipe side outside the housing. Communicate with air inlet or air pipe.
  • An open-type electric motor for driving a vehicle includes a stator, a rotor provided inside the stator, a housing surrounding the stator, a rotating shaft of the rotor, and both sides of the housing.
  • An exhaust hole is provided, and a second exhaust hole is provided in the other of the closing member or the housing, and an air flow that travels substantially straight from the intake hole to the first exhaust hole by the fan and an air flow that is diverted to the stator and the rotor It forms a flow.
  • An open-type motor for driving a vehicle includes a stator, a rotor provided inside the stator, a housing surrounding the stator, a rotation shaft of the rotor, and both sides of the housing.
  • One side is provided with an air inlet
  • one of the closing members or the housing is provided with a first exhaust hole
  • the other of the closing member or the housing is provided with a second exhaust hole.
  • the airflow almost going straight to the first exhaust hole contains dust, and the airflow diverted to the stator and the rotor is dust. Not included.
  • the open-type motor for driving a vehicle includes a stator, a rotor provided inside the stator, a stator frame surrounding the stator and the rotor, and both ends of the stator frame. It has a bracket to close, an air inlet provided on one side of the bracket, and an exhaust port provided on the other side of the bracket, and cooling air is blown into the space between one side of the bracket and the stator and rotor.
  • a first fan to be taken into the bracket is arranged, and a second fan is arranged in a space between the other of the brackets and the stator and the rotor.
  • the second fan is attached to the rotating shaft, and is formed so as to become farther from the rotor as the distance from the mounting portion in the radial direction increases. is there.
  • a current plate may be used as the second fan.
  • FIG. 1 is a sectional view showing a configuration of an open-type motor for driving a vehicle according to a first embodiment of the present invention.
  • FIG. 2 is an external view showing the upper external configuration of FIG.
  • FIG. 3 is an external view showing the external configuration of the left side of FIG.
  • Figure 4 shows FIG. 2 is an external view showing an external configuration on the right side of FIG. 1.
  • FIG. 5 is a cross-sectional view showing a configuration of an open-type motor for driving a vehicle according to a second embodiment of the present invention.
  • FIG. 6 is an external view showing an upper external configuration of FIG.
  • FIG. 7 is an external view showing an external configuration on the left side of FIG.
  • FIG. 8 is an external view showing the external configuration on the right side of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIGS. 1 to 4 show an open-type electric motor for driving a vehicle according to a first embodiment of the present invention.
  • the open-type motor for driving a vehicle according to the present embodiment is a three-phase induction motor.
  • reference numeral 1 denotes a cylindrical stator frame (or housing or casing), and a cylindrical stator core 2 is provided on an inner peripheral side thereof.
  • a plurality of slots continuous in the axial direction are formed in the inner peripheral portion of the stator core 2 at predetermined intervals in the circumferential direction, and the stator windings 4 are accommodated therein.
  • a rotor core 3 is provided concentrically with the stator core 2 via a gap.
  • a plurality of slots continuous in the axial direction are formed at predetermined intervals in the circumferential direction on the outer peripheral portion of the rotor core 3, and the rotor windings 5 are housed by a casting method.
  • a rotating shaft 6 is provided on the center axis of the rotor core 3, and is rotatably supported by bearings 9 and 10 provided at both ends of the stator frame 1.
  • annular end bracket 7 On one side of the stator frame 1 (on the inlet side of the cooling air, which is on the left side in the figure toward the iron core), an annular end bracket 7 as a closing member is provided, and on the inner peripheral side of the end bracket.
  • the bearing device 9 is fixedly supported.
  • the end bracket 7 has a shape that protrudes toward the non-core side between the end of the stator frame 1 and the outer peripheral side of the bearing device 9.
  • an outer peripheral surface portion 7a extending substantially in the axial direction and opposite to the core (or substantially horizontal) from a connection portion with the end of the stator frame 1;
  • the inner peripheral surface 7b which extends almost in the axial direction opposite to the iron core (or slightly oblique or almost horizontal with respect to the rotating shaft 6) from the peripheral connection, and the outer peripheral surface and the inner peripheral surface are joined to extend almost vertically And has a side surface portion 7c.
  • the portion corresponding to the outer peripheral surface portion 7a of the end bracket 7 may also serve as the stator frame 1.
  • a main fan 11 is provided on a rotating shaft 6 between the rotor core 3 and the bearing device 9.
  • the main fan 11 includes a fan main plate 11a, a fan vane 11b, and a side plate 11c.
  • the fan main plate 11a extends along the inner peripheral surface of the end bracket 7 to the side opposite to the iron core, is curved, and extends radially outward along the side surface of the end bracket 7. In other words, it is formed so as to move away from the rotor core 3 as it moves radially away from the mounting portion.
  • it has a shape having a parallel portion to the side surface portion of the end platform 7 and an inclined portion which curves from the parallel portion and extends to the connection portion of the rotating shaft 6.
  • a plurality of fan vanes 11b are provided on the end bracket 7 side of the parallel portion of the fan main plate 11a.
  • a side plate 11c is provided on the end bracket 7 side of the fan vane 11b.
  • the end bracket 7 may be used as the side plate 11c.
  • the air inlet 13 (or air inlet or air inlet) for taking in outside air as cooling air is arranged almost linearly with the fan vane 11 b on the inner peripheral surface 7 b of the end bracket 7. As shown in FIG. 1, it is located on the inner diameter side 11 d of the fan 11 b. A space of at least 3 is provided between the inlet 13 and the inner diameter side of the fan vane 1 1b.
  • a dust outlet 14 (or a dust outlet or a dust outlet) for discharging cooling air containing dust is arranged almost linearly with the fan vane 1 1b. And one as shown in Fig. 1.
  • the fan vane 1 1b is located on the outer diameter side 1 1e.
  • the number of fan vanes 1 1b and the number of air inlets 13 are a combination of numbers that are not divisible (no common divisor other than 1).
  • the axial position of the bearing device 9 is on the iron core side or at the same position as the fan vane 11b.
  • a dust separator 17 is provided as one of the separation mechanisms.
  • the outer diameter side refers to the circumferential end side of the outer shape of the fan formed so as to gradually open outward. Therefore, the separating mechanism such as a separating plate is not an end itself, but an annular projection formed so as to face the end, and as shown in FIG. It is located on the outer diameter side of the fan main plate 11a.
  • the dust separating plate 17 is a ring-shaped disk having a larger inner diameter than the outer diameter of the fan main plate 11a.
  • the dust separating plate 17 may be formed integrally with the end bracket 7.
  • the ventilation cross section of the air gap between the outer diameter of the fan main plate 11 a and the inner diameter of the dust separation plate 17 is larger than the ventilation cross section of the dust outlet 14.
  • an annular end bracket 8 as a closing member is formed integrally with the stator frame 1.
  • a bearing device 10 is fixedly supported on the inner peripheral side.
  • a plurality of exhaust ports 15 are provided on the side of the end bracket 8 for discharging the cooling air having cooled the inside of the machine to the outside of the machine.
  • a filter 19 is provided outside the exhaust port 15 so that dust does not enter the machine through the exhaust port 15.
  • the auxiliary fan 12 is provided at the end of the rotor core 3 on the bearing device 10 side.
  • the auxiliary fan 12 includes a fan main plate 12a, a fan vane 12b and a side plate 12c.
  • the fan main plate 12 a is curved along the curved shape of the bearing cover 16 of the bearing device 10, and extends radially outward along the end bracket 8. In other words, it is formed so as to become farther from the rotor core 3 as it becomes farther in the radial direction from the mounting portion.
  • a plurality of fan vanes 12b are provided on the iron core side of the fan main plate 12a.
  • a side plate 12c is provided on the iron core side of the fan vane 12b.
  • the auxiliary fan 12 may omit the side plate 12c.
  • the fan main plate 12 a from which the fan vane 12 b is omitted may be used as a shielding plate.
  • a grease supply device 20 for supplying grease to the bearing device 9 is provided outside the end bracket 7.
  • a grease supply device 21 for supplying grease to the bearing device 10 and a speed detection device 24 for detecting the rotation speed of the rotating shaft 6 are provided outside the end bracket 8.
  • One end of the end portion of the stator winding 4 is connected to three phases of a lead wire 23 penetrating through the stator frame 1 and drawn into the machine.
  • the lead wire 23 is for supplying electric power to the stator winding 4.
  • One of the separated cooling winds contains dust, which flows on the inner surface on the outer peripheral side of the end bracket 7 and flows in the circumferential direction on the inner surface on the outer peripheral side of the end bracket 7 by the rotational force of the main fan 11. It reaches the discharge port 14 and is discharged outside the machine. At this time, the cooling air containing dust does not flow into the machine due to the dust separating plate 17 serving as a wall.
  • the other cooling air that has been separated does not contain dust, and is pushed into the iron core through a gap between the inner diameter side of the dust separation plate 17 and the outer diameter side of the fan main plate 11a.
  • the cooling air pushed in cools one end of the stator core 2 and the rotor core 3, and the gap between the stator core 2 and the rotor core 3 and the axial direction provided in the rotor core 3 are plural. It flows to the exhaust side while cooling the continuous ventilation duct 18.
  • the cooling air that has reached the exhaust side cools the other ends of the stator core 2 and the rotor core 3 and is discharged out of the machine through the exhaust port 15.
  • the auxiliary fan 12 is rotating by the rotation of the rotating shaft 6, air flows in the space at the other end of the stator core 2 and the rotor core 3.
  • the cooling air pushed by the main fan 11 is divided into two cooling airs by the dust separating plate 17, that is, a cooling air containing dust and a cooling air not containing dust.
  • Cooling air containing dust is Dust-free cooling air is discharged from the outlet 14 to the outside of the machine and pushed into the machine through the gap between the inner diameter side of the dust separating plate 17 and the outer diameter side of the fan main plate 11a. Therefore, the inside of the machine can be cooled by the dust-free cooling air, which prevents dust from entering the inside of the machine and accumulating dust due to long-term operation. Therefore, periodic disassembly and cleaning are not required, and maintenance return can be extended.
  • the end bracket 7, the main fan 11, and the end bracket 7 are provided on the end bracket 7 facing the outer diameter side of the fan main plate 11 a of the main fan 11.
  • the cooling air containing dust and the cooling not containing dust can be separated, so that the mechanism for removing dust can be configured more easily than the conventional one.
  • the failure potential can be reduced. Therefore, reliability can be improved.
  • the ventilation cross-sectional area of the gap between the outer diameter side of the fan main plate 11 a and the inner diameter side of the dust separation plate 17 is determined by the ventilation cross-section area of the dust outlet 14.
  • the amount of cooling air pushed into the machine through the gap can be increased and the air speed can be reduced, and the amount of cooling air discharged from the dust outlet 14 can be reduced and the air speed can be increased. . Therefore, the cooling air containing dust can be reliably discharged from the dust outlet 14 having a high wind speed, and the inside of the machine can be cooled by a large amount of cooling air, so that the above effect can be improved.
  • the end bracket 7 has a shape protruding toward the non-iron core side
  • the fan main plate 11 a of the main fan 11 has a shape along the end bracket 7, Since a fan vane 1 lb is provided on the end bracket 7 side of the fan main plate 11a, the main fan 11 can be installed on the rotating shaft 6 between the rotor core 3 and the bearing device 9, and the axial direction The length can be shortened. Therefore, the size and weight of the motor can be reduced.
  • the inlet 13 and the fan van 1 1 b are arranged almost linearly, so that the ventilation loss of the cooling air taken in through the air inlet 13 can be reduced, and the required amount of cooling air can be easily secured even if the diameter of the main fan 11 is reduced. it can. Therefore, the noise of the motor can be reduced.
  • the distance between the inner diameter side of the fan vane 11 b and the air inlet 13 is set to 3 O ram or more.
  • Noise generated in the space between the air inlets 13 can be reduced.
  • the noise of the fan is the sound of the fan vanes cutting the air, which is caused by the air density.
  • the noise of the main fan 11 is generated from the space between the inlet 13 and the fan van 11 b. This is due to the change in air density between the portion with 13 and the portion without the inlet 13.
  • this noise can be reduced by increasing the spatial distance between the inlet 13 and the fan vane 11b, thereby reducing the change in air density. Therefore, in the first embodiment, the above-described effect is improved by leaving a space distance at which the effect of the reduction is remarkable, that is, 30 or more bandages.
  • the number of fan vanes 1 1b and the number of inlets 13 are not divisible by each other (no common divisor other than 1).
  • the level of noise generated in the space between the fan vanes 11 b and the air inlet 13 can be reduced.
  • the number of inlets is 12 and the number of fans is 15 and 17, in the combination of 12 and 15, there are 3 in addition to 1 in common divisor.
  • the positions (phases) of the fan vane and the air inlet become exactly the same, and the noise is strengthened and the noise level is raised.
  • the common divisor since the common divisor does not exist except for 1, the position (phase) of the fan vane and the air inlet are all different at 360 ° around one round, and the noise cannot be strengthened. Noise level can be reduced.
  • the combination of 12 and 15 has a common divisor of 1, 3 and thus generates noise having frequencies of 12, 20, 15, 36, and 45 times.
  • the combination of 12 and 17 has a common divisor of 1 and therefore generates noise with a frequency of 12 times and 17 times.
  • the wavelength of resonance in the tube becomes 4 L, 4 L / 2, 4 L / 3, 4 LZ4...
  • the combination of 12 and 15 with high sound generation frequency tends to resonate easily and increase the noise level.
  • the combination of 12 and 17 with low noise generation frequency can reduce resonance and reduce noise level. Therefore, the above effects can be further improved.
  • the auxiliary fan 12 is provided at the end of the rotor core 3 on the bearing device 10 side, air flows into the space between the core and the end bracket 8. Then, the heat of the high-temperature cooling air can be suppressed from being trapped in the space, and the temperature rise of the bearing device 10 can be suppressed.
  • the fan main plate 12a of the auxiliary fan 12 is formed along the bearing cover 16 of the bearing device 10 so that the fan main plate 12a and the bearing cover 16 are
  • the negative pressure in this air gap can be increased by reducing the air gap between them, increasing the amount of cooling air flowing in the radial direction and increasing the fan main plate 12a. Heat from the bearing cover 16 can be more easily dissipated. Therefore, the temperature rise of the bearing device 10 can be further suppressed.
  • the amount of cooling air flowing in the radial direction can be increased, the diameter of the main fan 11 can be reduced, and the noise can be further reduced.
  • FIGS. 5 to 8 show an open-type motor for driving a vehicle according to a second embodiment of the present invention.
  • the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
  • the end bracket 7 and the dust separation plate 17 which is one of the separation mechanisms described in the first embodiment are integrated, and the end bracket facing the outer diameter side of the fan main plate 11a is integrated.
  • the connecting portion of the Dopplet 7 with the stator frame 1 protrudes toward the inner diameter side. That is, the protrusion 7 d is formed.
  • the side plate of the main fan 11 is omitted, and the side wall 7c of the end bracket 7 is substituted.
  • a dust outlet 14 is provided between the dust outlet 14 provided on the outer peripheral surface of the end bracket 7 and one inlet 29 provided on the outer peripheral portion of the stator frame 1 on the bearing device 10 side.
  • a ventilation tube 30 is provided to supply cooling air containing dust discharged from the space to the space between the iron core and the end bracket 8.
  • the plurality of outlets 15 for the cooling air after cooling the inside of the machine are not provided on the end bracket 8 but on the outer peripheral portion of the stator frame 1 on the same peripheral surface as the inlet 29. Are provided so as to be arranged in the same location.
  • a rectifying plate 31 is provided at the end of the rotor core 3 on the bearing device 10 side instead of the auxiliary fan 12 described in the first embodiment.
  • the current plate 31 has a shape that is inclined radially outward from the end of the rotor core 3 so that the cooling air flowing through the ventilation duct 18 can be guided radially outward. In other words, it is formed so as to move away from the rotor core 3 as it moves radially away from the mounting portion.
  • the dust outlet 14 provided on the outer peripheral surface of the end bracket 7 and the inlet provided on the outer peripheral portion of the stator frame 1 on the bearing device 10 side are provided.
  • the ventilation pipe 30 is provided between the cooling air and the cooling air containing dust.
  • the cooling air can be supplied to the discharge side of the cooling air, that is, the space between the iron core and the end bracket 8 through the pipe 30.
  • the space between the iron core and the end bracket 8 can be cooled by the cooling air containing dust, which has a lower temperature than the cooling air that does not contain the dust and has flown while cooling the inside of the machine.
  • the cooling effect of the part can be improved as compared with the first embodiment. Since the cooling air containing dust has a smaller air volume than the cooling air not containing dust, after cooling the space between the iron core and the end bracket 8, the cooling air containing no dust and the exhaust air 15 Is discharged out of the aircraft via Therefore, in addition to the effects of the first embodiment, the cooling efficiency can be improved.
  • the open-ended motor for vehicle drive which can achieve extension of maintenance return can be provided. Further, it is possible to provide an open-type electric motor for driving a vehicle, which can extend the return to maintenance without increasing the failure potential. Further, it is possible to provide an open-type motor for driving a vehicle, which can improve the cooling efficiency of the bearing device on the exhaust side of the cooling wind, for example, can suppress a rise in temperature.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

An open type electric motor for driving vehicle capable of extending a maintenance circuit, comprising a stator frame (1) storing therein a stator (2), a rotor (3) disposed inside the stator (2), and a fan (11) disposed on a rotating shaft (6) of the rotor (3) and being covered at both axial sides thereof by brackets (7 and 8), respectively, wherein a cooling air inlet (13) is disposed in the bracket (7), a first cooling air exhaust port (14) is disposed in the bracket (7) or rotor frame (1), a second cooling air vent port (15) is disposed in the bracket (8) or rotor frame (1), an annular projected part (17) is formed on the bracket (7) or inner periphery of the rotor frame (1) opposedly to the outside diameter of the fan (11), and the opening part of the first exhaust port (14) is disposed between the projected part (17) and the bracket (7).

Description

明 細 書  Specification
車両駆動用開放型電動機 技術分野  Open motors for vehicle driving
本発明は、 車両駆動用開放型電動機に係り、 特に冷却風に含まれてい る塵埃除去に好適な車両駆動用開放型電動機に関するものである。 背景技術  The present invention relates to an open-type electric motor for driving a vehicle, and more particularly to an open-type electric motor for driving a vehicle that is suitable for removing dust contained in cooling air. Background art
従来の車両駆動用開放型電動機としては、 特開平 6— 6958 号公報, 米 国特許 5, 000,769 号公報に開示のものが知られている。 このうち前者の 電動機は、 冷却風である外気を機内に取込む際に、 入気口に設けたフィ ルターを介して取込み、 冷却風に含まれている塵埃を除去していた。 後 者の電動機は、 冷却風である外気を機内に取込む際に、 複数の丸孔又は ルーバー形状の孔を有する平面板により仕切られた 2つの部屋を介して 取込み、 冷却風に含まれている塵埃を除去していた。 発明の開示  As a conventional open-type motor for driving a vehicle, those disclosed in JP-A-6-6958 and US Pat. No. 5,000,769 are known. When the outside air, which is cooling air, was taken into the machine, the former motor was taken in through a filter provided at the air inlet to remove dust contained in the cooling air. When taking in the outside air, which is cooling air, into the machine, the latter motor is taken in through two rooms separated by a flat plate having a plurality of round holes or louver-shaped holes, and is included in the cooling air. Dust had been removed. Disclosure of the invention
車両駆動用開放型電動機としては、 前者の電動機が主流であるが、 最 近、 この電動機に対して保守回帰の延長化, 低騒音化などの様々な要求 があり、 その中でも保守回帰の延長化の要求が高い。 この要求が高いの は、 前者の電動機では、 フィルタ一の除去機能が完全でないため、 フィ ルターにより除去されない塵埃が機内に侵入し、 それが長期間の運転に より機内に堆積し、 これを取除くために 5, 6年毎に分解掃除を行う必 要があるためであった。  The former motor is the mainstream of open-type motors for vehicle driving, but recently there have been various demands on this motor, such as prolonged maintenance return and low noise. High demands. This demand is high because, in the former motor, dust that cannot be removed by the filter penetrates into the machine due to the incomplete removal function of the filter, which accumulates in the machine over a long period of operation, and this is removed. This is because it is necessary to disassemble and clean every 5 or 6 years to remove it.
そこで、 本発明者は、 フィルタ一を用いることなく塵埃を除去できる 車両駆動用開放型電動機として後者の電動機に着目した。 ところが、 後 者の電動機は、 2つの部屋を形成しているので、 電動機の軸方向の寸法 を大きく とる必要があると共に、 塵埃除去のための構造が複雑化し、 故 障ポテンシャルの増大を招く虞れもある。 また、 2つの部屋を介して冷 却風に含まれている塵埃を除去しているので、 機内に近い方の部屋を省 略できない。 もし機内に近い方の部屋を省略すれば、 冷却風に含まれて いる塵埃が機内に侵入し、 それが長期間の運転により機内に堆積し、 前 者の電動機と同様に定期的な分解清掃が必要になる。 Therefore, the inventor can remove dust without using a filter. We focused on the latter motor as an open-type motor for driving vehicles. However, since the latter motor forms two rooms, it is necessary to increase the size of the motor in the axial direction, and the structure for removing dust becomes complicated, which may increase the fault potential. There is also. In addition, since the dust contained in the cooling air is removed through the two rooms, the room closer to the cabin cannot be omitted. If the room close to the cabin is omitted, the dust contained in the cooling air will enter the cabin and accumulate in the cabin over a long period of operation. Is required.
また、 後者の電動機は、 冷却風の入気ロを径方向に対して垂直な方向 に開口しているので、 入気した冷却風は入気方向に対して直角な方向に 折れ曲がる。 このため、 冷却風の損失が大きぐなり、 冷却に必要な風量 を確保するためには冷却フアンの径を大きくする必要がある。 冷却ファ ンの径を大きく し過ぎると騒音が顕著になる.。  Also, in the latter motor, the cooling air intake is opened in a direction perpendicular to the radial direction, so that the incoming cooling air bends in a direction perpendicular to the inlet direction. For this reason, the loss of cooling air increases, and it is necessary to increase the diameter of the cooling fan in order to secure the amount of air required for cooling. If the diameter of the cooling fan is too large, noise will be noticeable.
また、 後者の電動機は、 冷却風の排気側について全く考慮していない ので、 機内を冷却した高温の冷却風が軸受カバーに直接当たり、 排気側 の軸受装置の温度を上昇させてしまうという課題があった。  Also, since the latter motor does not consider the exhaust side of the cooling air at all, there is a problem that the high-temperature cooling air that has cooled the interior of the machine directly hits the bearing cover and raises the temperature of the bearing device on the exhaust side. there were.
本発明は、 上記の点に鑑みなされたものであって、 その代表的な目的 の 1つ目は、 保守回帰の延長化が図れる車両駆動用開放型電動機を提供 することにある。 代表的な目的の 2つ目は、 故障ポテンシャルの増大を 招くことなく保守回帰の延長化が図れる信頼性の高い車両駆動用開放型 電動機を提供することにある。 代表的な目的の 3つ目は、 冷却風の排気 側の軸受装置の冷却効率の向上、 例えば温度上昇を抑えることができる 車両駆動用開放型電動機を提供することにある。  SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and the first of its typical objects is to provide an open-type motor for driving a vehicle, which can extend maintenance return. The second of the typical purposes is to provide a highly reliable open-type motor for vehicle drive that can extend maintenance return without increasing the failure potential. The third typical purpose is to provide an open-type motor for driving a vehicle, which can improve the cooling efficiency of the bearing device on the exhaust side of the cooling air, for example, suppress the temperature rise.
本願第 1番目の発明に係る車両駆動用開放型電動機は、 固定子枠の内 側に設けた固定子と、 固定子の内側に設けた回転子と、 回転子の回転軸 を支承する軸受装置と、 固定子枠の端部に設けたブラケッ トと、 回転子 と軸受装置との間の回転軸に設けたファンとを有してなり、 ブラケッ 卜 は固定子枠と軸受装置との間で反鉄心側に張出した形状を有し、 ファン はフアン主板と、 ファン主板のブラケッ ト側に設けると共にブラケッ 卜 の張出した空間内に配置したフアンべ一ンからなるものである。 An open-type electric motor for driving a vehicle according to a first invention of the present application includes a stator provided inside a stator frame, a rotor provided inside the stator, and a rotating shaft of the rotor. Bearing, a bracket provided at an end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket comprises a stator frame and a bearing. The fan has a shape that protrudes toward the anti-core side between the device and the fan. .
本願第 2番目の発明に係る車両駆動用開放型電動機は、 固定子枠の内 側に設けた固定子と、 固定子の内側に設けた回転子と、 回転子の回転軸 を支承する軸受装置と、 固定子枠の端部に設けたブラケッ トと、 回転子 と軸受装置との間の回転軸に設けたファンとを有してなり、 ブラケッ ト は固定子枠との接続部からほぼ軸方向反鉄心側に伸びた外周面部と、 軸 受装置との接続部からほぼ軸方向反鉄心側に伸びた内周面部と、 外周面 部と内周面部との間に設けた側面部からなリ、 フアンはブラケッ 卜の側 面部と平行な部分及び平行部分から回転軸との接続部に至る傾斜した部 分からなるファン主板と、 フアン主板のブラケッ 卜側に設けると共にブ ラケッ 卜の外周面部, 内周面部及び側面部によって囲まれた空間内に配 置したファンべ一ンからなるものである。  An open-type motor for driving a vehicle according to a second invention of the present application includes a stator provided inside a stator frame, a rotor provided inside the stator, and a bearing device for supporting a rotating shaft of the rotor. And a bracket provided at the end of the stator frame, and a fan provided at the rotating shaft between the rotor and the bearing device. An outer peripheral surface extending toward the direction opposite to the iron core, an inner peripheral surface extending substantially from the connection with the bearing device toward the opposite axial core, and a side surface provided between the outer peripheral surface and the inner peripheral surface. The fan and the fan are provided on the bracket side of the fan main plate, the fan main plate including a portion parallel to the side surface portion of the bracket and an inclined portion from the parallel portion to the connection portion with the rotating shaft, and the outer peripheral surface portion of the bracket. Fan placed in the space surrounded by the inner peripheral surface and side surface It consists of vanes.
本願第 3番目の発明に係る車両駆動用開放型電動機は、 固定子枠の内 側に設けた固定子と、 固定子の内側に設けた回転子と、 回転子の回転軸 を支承する軸受装置と、 固定子枠の端部に設けたブラケッ トと、 回転子 と軸受装置との間の回転軸に設けたファンとを有してなり、 ブラケッ ト は固定子枠と軸受装置との間で反鉄心側に張出した形状を有し、 ファン はブラッケッ ト側に傾斜させて設けたファン主板と、 ファン主板のブラ ケッ 卜側に設けたファンべーンからなるものである。  The open-type motor for driving a vehicle according to the third invention of the present application is a bearing device that supports a stator provided inside a stator frame, a rotor provided inside the stator, and a rotating shaft of the rotor. And a bracket provided at an end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket is provided between the stator frame and the bearing device. The fan has a shape protruding toward the anti-core side, and the fan is composed of a fan main plate provided at an angle to the bracket side and a fan van provided at the bracket side of the fan main plate.
本願第 4番目の発明に係る車両駆動用開放型電動機は、 固定子枠の内 側に設けた固定子と、 固定子の内側に設けた回転子と、 回転子の回転軸 を支承する軸受装置と、 固定子枠の端部に設けたブラケッ トと、 回転子 と軸受装置との間の回転軸に設けたファンとを有してなり、 ブラケッ ト は固定子枠と軸受装置との間で反鉄心側に張出した形状を有し、 ファン はファン主板と、 ファン主板のブラケッ ト側に設けると共にブラケッ ト の張出した空間内に配置したファンべーンからなり、 ファン主板の外径 側には冷却風の分離板を設けたものである。 An open-type motor for driving a vehicle according to a fourth invention of the present application includes a stator provided inside a stator frame, a rotor provided inside the stator, and a rotating shaft of the rotor. Bearing, a bracket provided at the end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket comprises a stator frame and a bearing. The fan has a shape that protrudes toward the anti-core side between the fan and the fan. A separation plate for cooling air is provided on the outside diameter side of the.
本願第 5番目の発明に係る車両駆動用開放型電動機は、 固定子枠の内 側に設けた固定子と、 固定子の内側に設けた回転子と、 回転子の回転軸 を支承する軸受装置と、 固定子枠の端部に設けたブラケッ トと、 回転子 と軸受装置との間の回転軸に設けたファンとを有してなり、 ブラケッ 卜 は固定子枠と軸受装置との間で反鉄心側に張出した形状を有し、 ファン はフアン主板と、 ファン主板のブラケッ 卜側に設けると共にブラケッ 卜 の張出した空間内に配置したファンべーンからなり、 ファンべ一ンの内 径側には冷却風の入気口を設けたものである。  An open-type electric motor for driving a vehicle according to a fifth invention of the present application includes a stator provided inside a stator frame, a rotor provided inside the stator, and a bearing device for supporting a rotating shaft of the rotor. And a bracket provided at an end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket is provided between the stator frame and the bearing device. The fan has a shape protruding toward the anti-core side, and the fan consists of a fan main plate and a fan van provided on the bracket side of the fan main plate and arranged in the space where the bracket overhangs. A cooling air inlet is provided on the side.
本願第 6番目の発明に係る車両駆動甩開放型電動機は、 固定子枠の内 側に設けた固定子と、 固定子の内側に設けた回転子と、 回転子の回転軸 を支承する軸受装置と、 固定子枠の端部に設けたブラケッ トと、 回転子 と軸受装置との間の回転軸に設けたファンとを有してなり、 ブラケッ 卜 は固定子枠と軸受装置との間で反鉄心側に張出した形状を有し、 ファン はファン主板と、 ファン主板のブラケッ 卜側に設けると共にブラケッ 卜 の張出した空間内に配置したフアンべ一ンからなり、 ファンべ一ンの内 径側には冷却風の入気口を設け、 ファンべ一ンの外径側には塵埃を含む 冷却風の排出口を設けたものである。  A vehicle drive-open type electric motor according to a sixth aspect of the present invention includes a stator provided inside a stator frame, a rotor provided inside the stator, and a bearing device for supporting a rotating shaft of the rotor. And a bracket provided at an end of the stator frame, and a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket is provided between the stator frame and the bearing device. The fan has a shape that protrudes toward the anti-core side, and the fan is composed of a fan main plate and a fan fan provided on the bracket side of the fan main plate and arranged in the space where the bracket protrudes. A cooling air intake port is provided on the side, and an outlet for cooling air containing dust is provided on the outer diameter side of the fan vane.
第 4番目の発明に係る車両駆動用電動機において分離板は、 ファン主 板の外径よりも大きい内径を有するリング状の板である。 第 5番目又は 第 6番目の発明に係る車両駆動用開放型電動機において、 ファンべーン の内径側と入気口との距離を 3 O ram以上としている。 また、 ファンべ一 ンの枚数と前記入気口の個数を互いに割切れない数としている。 第 1番 目乃至第 6番目の発明に係る車両駆動用開放型電動機において、 冷却風 の排出側に補助フアンを設けている。 補助ファンはそのファン主板が冷 却風の排出側に設けた軸受カバーの形状に沿って径方向に伸びたもので める。 In the vehicle driving motor according to the fourth invention, the separation plate is a ring-shaped plate having an inner diameter larger than the outer diameter of the fan main plate. Fifth or In the open-type motor for driving a vehicle according to a sixth aspect of the present invention, the distance between the inner diameter side of the fan vane and the air inlet is 3 O ram or more. Further, the number of fan vanes and the number of the air inlets are set to numbers that cannot be divided. In the open-type motor for driving a vehicle according to the first to sixth inventions, an auxiliary fan is provided on a cooling air discharge side. The auxiliary fan shall be one whose main plate extends radially along the shape of the bearing cover provided on the cooling air discharge side.
本願第 7番目の発明に係る車両駆動用開放型電動機は、 固定子, 固定 子の内側に設けた回転子及び回転子の回転軸に設けたファンを収納した 固定子枠の軸方向の両側をブラケッ 卜により塞いでなり、 ブラケッ 卜の 一方には冷却風の入気口を設け、 ブラケッ 卜の一方又は固定子枠には冷 却風の第 1の排気口を設け、 ブラケッ 卜の他方又は固定子枠には冷却風 の第 2の排気口を設け、 ブラケッ 卜の一方又は前記固定子枠の内周には フアンの外径側と対向するように円環状の突出部を形成し、 この突出部 とブラケッ 卜の一方との間には第 1の排気口の開口部を配置したもので ある。  An open-type motor for driving a vehicle according to a seventh invention of the present application is a motor having a stator, a rotor provided inside the stator, and a fan provided on a rotating shaft of the rotor. Closed by a bracket, one side of the bracket is provided with a cooling air inlet, one side of the bracket or the stator frame is provided with a first cooling air outlet, and the other side of the bracket or fixed A second exhaust port for cooling air is provided in the slave frame, and an annular projection is formed on one of the brackets or on the inner periphery of the stator frame so as to face the outer diameter side of the fan. The opening of the first exhaust port is arranged between the part and one of the brackets.
本願第 8番目の発明に係る車両駆動用開放型電動機は、 固定子, 固定 子の内側に設けた回転子及び回転子の回転軸に設けたファンを収納した 固定子枠の軸方向の両側をブラケッ 卜により塞いでなり、 ブラケッ 卜の 一方には冷却風の入気口を設け、 ブラケッ 卜の一方又は固定子枠には冷 却風の第 1の排気口を設け、 ブラケッ 卜の他方又は固定子枠には冷却風 の第 2の排気口を設け、 ブラケッ 卜の一方又は固定子枠の内周にはファ ンの外径側と対向するように円環状の突出部を形成し、 この突出部とブ ラケッ トの一方との間には第 1の排気口の開口部を配置し、 第 1の排気 口と第 2の排気口側に設けた第 2の入.気口との間にはそれらを連通する 通風管を設けたものである。 An open-type electric motor for driving a vehicle according to an eighth invention of the present application is a motor for driving a stator, which includes a stator, a rotor provided inside the stator, and a fan provided on a rotating shaft of the rotor. Closed by a bracket, one side of the bracket is provided with a cooling air inlet, one side of the bracket or the stator frame is provided with a first cooling air outlet, and the other side of the bracket or fixed A second exhaust port for cooling air is provided in the slave frame, and an annular protrusion is formed on one side of the bracket or on the inner periphery of the stator frame so as to face the outer diameter side of the fan. The opening of the first exhaust port is located between the first exhaust port and one of the brackets, and the second inlet port provided on the first exhaust port and the second exhaust port side. Communicate them A ventilation tube is provided.
第 7番目又は第 8番目の発明に係る車両駆動用開放型電動機において 部材は、 入気口から取込んだ外気を塵埃を含む外気と塵埃を含まない外 気とに分離する分離板を含む分離機構である。 第 1の排出口はブラケッ 卜の一方の外周面に 1つ設けている。 ブラケッ 卜の一方は中心部側に凹 部を有すると共に凹部の内周面に入気口を複数設けている。  In the open-type electric motor for driving a vehicle according to the seventh or eighth invention, the member comprises a separation plate including a separation plate for separating outside air taken in from the air inlet into outside air containing dust and outside air containing no dust. Mechanism. One first outlet is provided on one outer peripheral surface of the bracket. One of the brackets has a concave portion on the center side and a plurality of air inlets on the inner peripheral surface of the concave portion.
本願第 9番目の発明に係る車両駆動用開放型電動機は、 固定子枠の内 側に設けた固定子と、 固定子の内側に設けた回転子と、 回転子の回転軸 を支承する軸受装置と、 固定子枠の端部に設けたブラケッ トと、 回転子 と軸受装置との間の回転軸に設けたファンと、 外気を機内に取込むため の入気口と、 機内に取込んだ外気を機外に排出するための第 1の排気口 とを有してなり、 フアンの外径側と対向する部分に内径側に伸びる部材 を設けると共に、 この部材ょりも外側の部分に機内に取込んだ外気を機 外に排出するための第 2の排気口を設けたものである。  An open-type motor for driving a vehicle according to a ninth invention of the present application is a bearing device that supports a stator provided inside a stator frame, a rotor provided inside the stator, and a rotating shaft of the rotor. And a bracket provided at the end of the stator frame, a fan provided on the rotating shaft between the rotor and the bearing device, an air inlet for taking in outside air into the machine, It has a first exhaust port for exhausting outside air to the outside of the machine, and a member that extends to the inside diameter is provided at a portion facing the outside diameter of the fan, and this member is also provided inside the machine at the outside portion. A second exhaust port is provided to discharge the outside air taken into the outside of the machine.
本願第 1 0番目の発明に係る車両駆動用開放型電動機は、 固定子枠の 内側に設けた固定子と、 固定子の内側に設けた回転子と、 回転子の回転 軸を支承する軸受装置と、 固定子枠の端部に設けたブラケッ トと、 回転 子と軸受装置との間の回転軸に設けたファンと、 外気を機内に取込むた めの入気口と、 機内に取込んだ外気を機外に排出するための第 1 の排気 口とを有してなり、 フアンの外径側と対向する部分に内径側に伸びる部 材を設けると共に、 この部材ょりも外側の部分に機内に取込んだ外気を 機外に排出するための第 2の排気口を設け、 かつ第 2の排気口と第 1 の 排気口側に設けた第 2の入気口とを連通する通風管を設けたものである。 第 9番目又は第 1 0番目の発明に係る車両駆動用開放型電動機におい て部材は、 入気口から取込んだ外気を塵埃を含む外気と塵埃を含まない 外気とに分離する分離板を含む分離機構である。 An open-type electric motor for driving a vehicle according to a tenth aspect of the present invention includes a stator provided inside a stator frame, a rotor provided inside the stator, and a bearing device for supporting a rotating shaft of the rotor. And a bracket provided at the end of the stator frame, a fan provided on the rotating shaft between the rotor and the bearing device, an air inlet for taking in outside air into the machine, and an air intake into the machine A first exhaust port for discharging outside air to the outside of the machine, a member that extends toward the inside diameter is provided at a portion facing the outside diameter side of the fan, and this member is also an outside portion. A second exhaust port for exhausting outside air taken into the machine to the outside of the machine, and ventilation for communicating the second exhaust port with the second air inlet provided on the first exhaust port side A tube is provided. In the open-type motor for driving a vehicle according to the ninth or tenth aspect, the member is configured such that the outside air taken in from the air inlet is free of dust and outside air. This is a separation mechanism that includes a separation plate that separates from outside air.
本願第 1 1番目の発明に係る車両駆動用開放型電動機は、 固定子と、 固定子の内側に位置する回転子と、 回転子の回転軸に設けた 1つ又は 2 つのファンと、 これらを内蔵するように形成したハウジングと、 ハウジ ングの軸方向の片側又は両側を塞ぐ閉塞部材とを備え、 閉塞部材はハウ ジングの一部を兼ねてもよく、 閉塞部材の一方には入気孔又は入気管を 開き、 閉塞部材乃至ハウジングには少なく とも 2つの排気孔又は排気管 を開き、 排気孔又は排気管のうちの 1つは吸気孔又は入気管側に設置し、 他の排気孔又は排気管は入気孔又は入気管とは軸方向にて反対側に位置 するように設置したものである。  The open-type motor for driving a vehicle according to the first invention of the present application includes a stator, a rotor positioned inside the stator, one or two fans provided on a rotation shaft of the rotor, and The housing includes a housing formed so as to be housed therein, and a closing member for closing one or both sides of the housing in the axial direction. The closing member may also serve as a part of the housing. Open the trachea, open at least two vents or exhaust pipes in the obstruction or housing, place one of the vents or exhaust pipes on the intake or inlet side, and the other exhaust or exhaust pipe. Is installed so that it is located on the opposite side in the axial direction from the air inlet or the air inlet pipe.
第 1 1番目の発明に係る車両駆動用開放型電動機において入気孔又は 入気管側の排気孔又は排気管は、 ハウジングの外部を出て第 2の排気孔 又は排気管側に開けた第 2の入気孔又は入気管に連通する。  In the open-type motor for driving a vehicle according to the first invention, the air inlet or the exhaust hole on the air inlet side is the second air outlet or the second air hole opened on the exhaust pipe side outside the housing. Communicate with air inlet or air pipe.
本願第 1 2番目の発明に係る車両駆動用開放型電動機は、 固定子と、 固定子の内側に設けた回転子と、 これらを取り囲むハウジングと、 回転 子の回転軸と、 ハウジングの両側を塞ぐ閉塞部材と、 閉塞部材の一方と 固定子及び回転子との間の回転軸に設けたファンとを備え、 閉塞部材の 一方には入気孔を設け、 閉塞部材の一方又はハウジングには第 1 の排気 孔を設け、 閉塞部材の他方又はハウジングには第 2の排気孔を設けると 共に、 ファンにより入気孔から第 1の排気孔へほぼ直進する空気流と、 固定子及び回転子へ分流する空気流を形成するものである。  An open-type electric motor for driving a vehicle according to the first and second aspects of the present invention includes a stator, a rotor provided inside the stator, a housing surrounding the stator, a rotating shaft of the rotor, and both sides of the housing. A closing member, a fan provided on a rotating shaft between one of the closing members and the stator and the rotor, an air inlet provided on one of the closing members, and a first opening on one of the closing members or the housing. An exhaust hole is provided, and a second exhaust hole is provided in the other of the closing member or the housing, and an air flow that travels substantially straight from the intake hole to the first exhaust hole by the fan and an air flow that is diverted to the stator and the rotor It forms a flow.
本願第 1 3番目の発明に係る車両駆動用開放型電動機は、 固定子と、 固定子の内側に設けた回転子と、 これらを取り囲むハウジングと、 回転 子の回転軸と、 ハウジングの両側を塞ぐ閉塞部材と、 閉塞部材の一方と 固定子及び回転子との間の回転軸に設けたファンとを備え、 閉塞部材の 一方には入気孔を設け、 閉塞部材の一方又はハウジングには第 1 の排気 孔を設け、 閉塞部材の他方又はハウジングには第 2の排気孔を設けると 共に、 ファンにより入気孔から第 1 の排気孔へほぼ直進する空気流と、 固定子及び回転子へ分流する空気流を形成し、 かつ第 1 の排気孔へほぼ 直進する空気流は閉塞部材の他方と固定子及び回転子との間の空間に導 くものである。 An open-type motor for driving a vehicle according to the first to third aspects of the present invention includes a stator, a rotor provided inside the stator, a housing surrounding the stator, a rotation shaft of the rotor, and both sides of the housing. A closing member; and a fan provided on a rotating shaft between one of the closing members and the stator and the rotor. One side is provided with an air inlet, one of the closing members or the housing is provided with a first exhaust hole, and the other of the closing member or the housing is provided with a second exhaust hole. An air flow almost straight to the exhaust hole and an air flow splitting to the stator and the rotor are formed, and the air flow almost straight to the first exhaust hole is between the other of the closing members and the stator and the rotor. It leads to the space of.
第 1 2番目又は第 1 3番目の発明に係る車両駆動用開放型電動機にお いて第 1 の排気孔へほぼ直進する空気流は塵埃を含み、 固定子及び回転 子へ分流する空気流は塵埃を含まない。  In the open-type electric motor for driving a vehicle according to the first or second invention, the airflow almost going straight to the first exhaust hole contains dust, and the airflow diverted to the stator and the rotor is dust. Not included.
本願第 1 4番目の発明に係る車両駆動用開放型電動機は、 固定子と、 固定子の内側に設けた回転子と、 固定子及び回転子を取り囲む固定子枠 と、 固定子枠の両端を塞ぐブラケッ トと、 ブラケッ トの一方に設けた入 気孔と、 ブラケッ トの他方に設けた排気孔とを備え、 ブラケッ トの一方 と固定子及び回転子との間の空間には冷却風を機内に取込む第 1のファ ンを配置し、 ブラケッ 卜の他方と固定子及び回転子との間の空間には第 2のファンを配置したものである。  The open-type motor for driving a vehicle according to the first to fourth aspects of the present invention includes a stator, a rotor provided inside the stator, a stator frame surrounding the stator and the rotor, and both ends of the stator frame. It has a bracket to close, an air inlet provided on one side of the bracket, and an exhaust port provided on the other side of the bracket, and cooling air is blown into the space between one side of the bracket and the stator and rotor. A first fan to be taken into the bracket is arranged, and a second fan is arranged in a space between the other of the brackets and the stator and the rotor.
第 1 4番目の発明に係る車両駆動用開放型電動機において第 2のファ ンは、 回転軸に取付けられ、 この取付部から径方向に遠ざかるにしたが つて回転子から遠ざかるように形成したものである。 第 2のファンとし て整流板を用いてもよい。 図面の簡単な説明  In the open-type electric motor for driving a vehicle according to the first to fourth aspects, the second fan is attached to the rotating shaft, and is formed so as to become farther from the rotor as the distance from the mounting portion in the radial direction increases. is there. A current plate may be used as the second fan. BRIEF DESCRIPTION OF THE FIGURES
第 1 図は本発明の第 1 の実施の形態である車両駆動用開放型電動機の 構成を示す断面図である。 第 2図は第 1 図の上側外観構成を示す外観図 である。 第 3図は第 1 図の左側外観構成を示す外観図である。 第 4図は 第 1図の右側外観構成を示す外観図である。 第 5図は本発明の第 2の実 施の形態である車両駆動用開放型電動機の構成を示す断面図である。 第 6図は第 5図の上側外観構成を示す外観図である。 第 7図は第 5図の左 側外観構成を示す外観図である。 第 8図は第 5図の右側外観構成を示す 外観図である。 発明を実施するための最良の形態 FIG. 1 is a sectional view showing a configuration of an open-type motor for driving a vehicle according to a first embodiment of the present invention. FIG. 2 is an external view showing the upper external configuration of FIG. FIG. 3 is an external view showing the external configuration of the left side of FIG. Figure 4 shows FIG. 2 is an external view showing an external configuration on the right side of FIG. 1. FIG. 5 is a cross-sectional view showing a configuration of an open-type motor for driving a vehicle according to a second embodiment of the present invention. FIG. 6 is an external view showing an upper external configuration of FIG. FIG. 7 is an external view showing an external configuration on the left side of FIG. FIG. 8 is an external view showing the external configuration on the right side of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
本発明の第 1の実施の形態である車両駆動用開放型電動機を第 1図乃 至第 4図に示す。 本実施の形態の車両駆動用開放型電動機は三相誘導電 動機である。 図面において 1は筒状の固定子枠 (又はハウジング若しく はケ一シング) であり、 その内周側には円筒状の固定子鉄心 2を設けて いる。 固定子鉄心 2の内周部には軸方向に連続したスロッ トを周方向に 所定の間隔をもって複数形成し、 固定子巻線 4を収納している。  FIGS. 1 to 4 show an open-type electric motor for driving a vehicle according to a first embodiment of the present invention. The open-type motor for driving a vehicle according to the present embodiment is a three-phase induction motor. In the drawings, reference numeral 1 denotes a cylindrical stator frame (or housing or casing), and a cylindrical stator core 2 is provided on an inner peripheral side thereof. A plurality of slots continuous in the axial direction are formed in the inner peripheral portion of the stator core 2 at predetermined intervals in the circumferential direction, and the stator windings 4 are accommodated therein.
固定子鉄心 2の内周側には空隙を介して固定子鉄心 2と同心円上に回 転子鉄心 3を設けている。 回転子鉄心 3の外周部には軸方向に連続した スロッ 卜を周方向に所定の間隔をもって複数形成し、 回転子卷線 5をダ ィキャス卜方法によリ収納している。 回転子鉄心 3の中心軸上には回転 軸 6 を設けており、 固定子枠 1 の両端部に設けた軸受装置 9, 1 0によ リそれを回転自在に支承している。  On the inner peripheral side of the stator core 2, a rotor core 3 is provided concentrically with the stator core 2 via a gap. A plurality of slots continuous in the axial direction are formed at predetermined intervals in the circumferential direction on the outer peripheral portion of the rotor core 3, and the rotor windings 5 are housed by a casting method. A rotating shaft 6 is provided on the center axis of the rotor core 3, and is rotatably supported by bearings 9 and 10 provided at both ends of the stator frame 1.
固定子枠 1の一方側 (冷却風の入気側であって、 本図では鉄心に向か つて左側) には閉塞部材である環状のェンドブラケッ ト 7 を設けており, その内周側には軸受装置 9を固定支持している。 エンドブラケッ ト 7は 固定子枠 1の端部と軸受装置 9の外周側との間で反鉄心側に張出した形 状のものである。 具体的には固定子枠 1の端部との接続部からほぼ軸方 向反鉄心側 (又はほぼ水平) に伸びた外周面部 7 aと、 軸受装置 9の外 周側の接続部からほぼ軸方向反鉄心側 (又は回転軸 6に対して若干斜め 若しくはほぼ水平) に伸びた内周面部 7 bと、 外周面部と内周面部とを 結合しほぼ垂直に伸びた側面部 7 c とを有する形状のものである。 尚、 ェン ドプラケッ 卜 7の外周面部 7 aに相当する部分は固定子枠 1 が兼ね てもよい。 On one side of the stator frame 1 (on the inlet side of the cooling air, which is on the left side in the figure toward the iron core), an annular end bracket 7 as a closing member is provided, and on the inner peripheral side of the end bracket. The bearing device 9 is fixedly supported. The end bracket 7 has a shape that protrudes toward the non-core side between the end of the stator frame 1 and the outer peripheral side of the bearing device 9. Specifically, an outer peripheral surface portion 7a extending substantially in the axial direction and opposite to the core (or substantially horizontal) from a connection portion with the end of the stator frame 1; The inner peripheral surface 7b, which extends almost in the axial direction opposite to the iron core (or slightly oblique or almost horizontal with respect to the rotating shaft 6) from the peripheral connection, and the outer peripheral surface and the inner peripheral surface are joined to extend almost vertically And has a side surface portion 7c. The portion corresponding to the outer peripheral surface portion 7a of the end bracket 7 may also serve as the stator frame 1.
回転子鉄心 3 と軸受装置 9 との間の回転軸 6上には主フアン 1 1 を設 けている。 主ファン 1 1 はファン主板 1 1 aとファンべ一ン 1 1 bと側 板 1 1 cからなるものである。 ファン主板 1 1 aはエン ドブラッケッ 卜 7の内周面部に沿って反鉄心側に伸びて湾曲し、 ェン ドプラケッ 卜 7の 側面部に沿って径方向外側に伸びた形状のものである。 換言すれば、 そ の取付部から径方向に遠ざかるに従つて回転子鉄心 3から遠ざかるよう に形成したものである。 具体的にはェン ドプラッケ 卜 7の側面部に平行 部と、 この平行部から湾曲し回転軸 6の接続部に伸びる傾斜部とを有す る形状のものである。 ファン主板 1 1 aの平行部のェン ドブラケッ 卜 7 側にはファンべーン 1 1 bを複数設けている。 ファンべ一ン 1 1 bのェ ンドプラケッ 卜 7側には側板 1 1 c を設けている。 尚、 側板 1 1 c とし てエンドブラケッ ト 7 を代用しても構わない。  A main fan 11 is provided on a rotating shaft 6 between the rotor core 3 and the bearing device 9. The main fan 11 includes a fan main plate 11a, a fan vane 11b, and a side plate 11c. The fan main plate 11a extends along the inner peripheral surface of the end bracket 7 to the side opposite to the iron core, is curved, and extends radially outward along the side surface of the end bracket 7. In other words, it is formed so as to move away from the rotor core 3 as it moves radially away from the mounting portion. Specifically, it has a shape having a parallel portion to the side surface portion of the end platform 7 and an inclined portion which curves from the parallel portion and extends to the connection portion of the rotating shaft 6. A plurality of fan vanes 11b are provided on the end bracket 7 side of the parallel portion of the fan main plate 11a. A side plate 11c is provided on the end bracket 7 side of the fan vane 11b. In addition, the end bracket 7 may be used as the side plate 11c.
ェン ドプラケッ 卜 7の内周面部 7 bには冷却風として外気を取込むた めの入気口 1 3 (又は入気孔若しくは入気管) をファンべーン 1 1 bと ほぼ直線配置となるように複数設けており、 第 1 図に示すように、 ファ ンべ一ン 1 1 bの内径側 1 1 dに位置している。 入気口 1 3 とファンべ —ン 1 1 bの内径側との間には 3 以上の間隔をあけている。 エン ド ブラケッ ト 7の外周面部 7 aには塵埃を含む冷却風を排出するための塵 埃排出口 1 4 (又は塵埃排出孔若しくは塵埃排出管) をファンべ一ン 1 1 bとほぼ直線配置となるように 1つ設けており、 第 1図に示すよう に、 ファンべーン 1 1 bの外径側 1 1 eに位置している。 ファンべ一ン 1 1 bの枚数と入気口 1 3の個数は互いに割切れない ( 1以外の公約数 を持たない) 数の組合わせとしている。 軸受装置 9の軸方向の位置はフ アンべ一ン 1 1 bの位置よリも鉄心側又は同じ位置としている。 The air inlet 13 (or air inlet or air inlet) for taking in outside air as cooling air is arranged almost linearly with the fan vane 11 b on the inner peripheral surface 7 b of the end bracket 7. As shown in FIG. 1, it is located on the inner diameter side 11 d of the fan 11 b. A space of at least 3 is provided between the inlet 13 and the inner diameter side of the fan vane 1 1b. On the outer peripheral surface 7a of the end bracket 7, a dust outlet 14 (or a dust outlet or a dust outlet) for discharging cooling air containing dust is arranged almost linearly with the fan vane 1 1b. And one as shown in Fig. 1. The fan vane 1 1b is located on the outer diameter side 1 1e. The number of fan vanes 1 1b and the number of air inlets 13 are a combination of numbers that are not divisible (no common divisor other than 1). The axial position of the bearing device 9 is on the iron core side or at the same position as the fan vane 11b.
ファン主板 1 1 aの外径側 1 1 f には塵埃を含む冷却風と塵埃を含ま ない冷却風とに分離すると共に、 分離した塵埃を含む冷却風が機内に流 れ込まないようにするための分離機構の 1つである塵埃分離板 1 7 を設 けている。 ここで、 外径側とは、 次第に外方に開くように形成されたフ アンの外形の周方向端部側のことをいう。 従って、 分離板等の分離機構 は、 この端部自体ではなく、 この端部に対向するように形成された円環 状の突起物であって、 第 1 図に示すように、 その突起物がファン主板 1 1 aの外径側に位置するのである。  In order to separate the cooling air containing dust and the cooling air containing no dust on the outer diameter side 11 f of the fan main plate 11a, to prevent the cooling air containing the separated dust from flowing into the machine. A dust separator 17 is provided as one of the separation mechanisms. Here, the outer diameter side refers to the circumferential end side of the outer shape of the fan formed so as to gradually open outward. Therefore, the separating mechanism such as a separating plate is not an end itself, but an annular projection formed so as to face the end, and as shown in FIG. It is located on the outer diameter side of the fan main plate 11a.
塵埃分離板 1 7はファン主板 1 1 aの外径よりも大き内径を有するリ ング状の円板である。 尚、 塵埃分離板 1 7はェンドプラケッ 卜 7 と一体 形成してもよい。 ファン主板 1 1 aの外径と塵埃分離板 1 7の内径との 間の空隙の通風断面積は塵埃排出口 1 4の通風断面積よりも大きく して いる。  The dust separating plate 17 is a ring-shaped disk having a larger inner diameter than the outer diameter of the fan main plate 11a. In addition, the dust separating plate 17 may be formed integrally with the end bracket 7. The ventilation cross section of the air gap between the outer diameter of the fan main plate 11 a and the inner diameter of the dust separation plate 17 is larger than the ventilation cross section of the dust outlet 14.
固定子枠 1 の他方側 (冷却風の排気側であって、 本図の鉄心に向かつ て右側) には閉塞部材である環状のェンドプラケッ 卜 8 を固定子枠 1 と 一体形成し設けており、 その内周側には軸受装置 1 0を固定支持してい る。 エンドブラケッ ト 8の側面には機内を冷却し終えた冷却風を機外に 排出するための排気口 1 5 (又は排気孔若しくは排気管) を複数設けて いる。 排気口 1 5の外側には排気口 1 5から塵埃が機内に侵入しないよ うにフィルタ一 1 9 を設けている。 本実施の形態によれば、 固定子枠 1 とェンドプラケッ 卜 8が一体になつた場合について説明したが、 固定子 枠 1 とエンドブラケッ ト 8が別々になっていても構わない。 また、 ェン ドプラケッ 卜 8が固定子枠 1 の一部を兼ねたもの、 すなわち一方が開放 した容器状のものであってもよい。 On the other side of the stator frame 1 (on the exhaust side of the cooling air and on the right side facing the iron core in the figure), an annular end bracket 8 as a closing member is formed integrally with the stator frame 1. A bearing device 10 is fixedly supported on the inner peripheral side. A plurality of exhaust ports 15 (or exhaust holes or exhaust pipes) are provided on the side of the end bracket 8 for discharging the cooling air having cooled the inside of the machine to the outside of the machine. A filter 19 is provided outside the exhaust port 15 so that dust does not enter the machine through the exhaust port 15. According to the present embodiment, the case where the stator frame 1 and the end bracket 8 are integrated has been described. Frame 1 and end bracket 8 can be separate. Further, the end bracket 8 may also serve as a part of the stator frame 1, that is, the end bracket 8 may be a container having one open.
回転子鉄心 3の軸受装置 1 0側の端部には補助フアン 1 2 を設けてい る。 補助ファン 1 2はファン主板 1 2 aとファンべ一ン 1 2 b と側板 1 2 cからなるものである。 ファン主板 1 2 aは軸受装置 1 0の軸受カ バー 1 6の湾曲形状に沿って湾曲し、 ェン ドプラケッ 卜 8に沿って径方 向外側に伸びた形状のものである。 換言すれば、 その取付部から径方向 に遠ざかるに従って回転子鉄心 3から遠ざかるように形成したものであ る。 ファン主板 1 2 aの鉄心側にはファンベーン 1 2 bを複数設けてい る。 ファンべ一ン 1 2 bの鉄心側には側板 1 2 c を設けている。 尚、 補 助ファン 1 2は側板 1 2 c を省略してもよい。 また、 補助フアン 1 2の 代わりにファンべ一ン 1 2 bを省略したファン主板 1 2 aを遮蔽板とし て代用してもよい。  An auxiliary fan 12 is provided at the end of the rotor core 3 on the bearing device 10 side. The auxiliary fan 12 includes a fan main plate 12a, a fan vane 12b and a side plate 12c. The fan main plate 12 a is curved along the curved shape of the bearing cover 16 of the bearing device 10, and extends radially outward along the end bracket 8. In other words, it is formed so as to become farther from the rotor core 3 as it becomes farther in the radial direction from the mounting portion. A plurality of fan vanes 12b are provided on the iron core side of the fan main plate 12a. A side plate 12c is provided on the iron core side of the fan vane 12b. In addition, the auxiliary fan 12 may omit the side plate 12c. Further, instead of the auxiliary fan 12, the fan main plate 12 a from which the fan vane 12 b is omitted may be used as a shielding plate.
エン ドブラケッ ト 7の外側には軸受装置 9にグリ一スを供給するグリ —ス供給装置 2 0を設けている。 エン ドブラケッ ト 8の外側には軸受装 置 1 0にグリースを供給するグリ一ス供給装置 2 1 と、 回転軸 6の回転 速度を検出する速度検出装置 2 4 を設けている。 固定子巻線 4のエン ド 部の一方側には固定子枠 1 を貫いて機内に引込んだリ― ド線 2 3 を三相 分接続している。 リ一ド線 2 3は固定子巻線 4に電力を供給するための ものである。  A grease supply device 20 for supplying grease to the bearing device 9 is provided outside the end bracket 7. A grease supply device 21 for supplying grease to the bearing device 10 and a speed detection device 24 for detecting the rotation speed of the rotating shaft 6 are provided outside the end bracket 8. One end of the end portion of the stator winding 4 is connected to three phases of a lead wire 23 penetrating through the stator frame 1 and drawn into the machine. The lead wire 23 is for supplying electric power to the stator winding 4.
固定子枠 1 の外周部には台車に取付けるための取付部 2 5, 2 6 を設 けている。 また、 固定子枠 1 の外周部にはリー ド線 2 3, インバ一タの 接地線 2 8, 速度検出装置 2 4の信号線を支持するための支持台 2 7 を 設けている。 支持台 2 7には電動機の接地線 2 2 を接続している。 次に、 本実施の形態の車両駆動用開放型電動機の冷却風の流れを説明 する。 尚、 第 1 図に示す矢印は冷却風の流れである。 回転軸 6の回転に より主ファン 1 1が回転すると、 ファンベーン 1 1 bの内径側と入気口 1 3 との間の空間に吸込力が作用し、 入気口 1 3から冷却風である外気 が吸込まれる。 吸込まれた外気は主ファン 1 1 の押込力によってエンド ブラケッ ト 7の外周面部の内面に向かって押込まれる。 この時、 塵埃分 離板 1 7によってファンべーン 1 1 bの外径側とェン ドプラケッ 卜 7 と の空間で 2つの冷却風に分離される。 At the outer periphery of the stator frame 1, mounting parts 25 and 26 for mounting to the bogie are provided. A support stand 27 for supporting the lead wire 23, the ground wire 28 of the inverter, and the signal line of the speed detector 24 is provided on the outer periphery of the stator frame 1. The ground wire 22 of the motor is connected to the support 27. Next, the flow of cooling air in the open-type motor for driving a vehicle according to the present embodiment will be described. The arrows shown in FIG. 1 indicate the flow of cooling air. When the main fan 11 rotates due to the rotation of the rotating shaft 6, a suction force acts on the space between the inner diameter side of the fan vanes 1 1b and the air inlet 13 and cooling air flows from the air inlet 13 through the air inlet 13. Some outside air is sucked in. The sucked outside air is pushed toward the inner surface of the outer peripheral surface of the end bracket 7 by the pushing force of the main fan 11. At this time, the dust separating plate 17 separates the two cooling winds in the space between the outer diameter side of the fan vane 11 b and the end bracket 7.
分離された一方の冷却風には塵埃が含まれており、 エン ドブラケッ 卜 7の外周側内面に流れ、 主ファン 1 1 の回転力によってエン ドブラケッ 卜 7の外周側内面を周方向に流れ、 塵埃排出口 1 4に到達し機外に排出 される。 この時、 塵埃を含む冷却風は塵埃分離板 1 7が壁となって機内 に流れ込むことがない。  One of the separated cooling winds contains dust, which flows on the inner surface on the outer peripheral side of the end bracket 7 and flows in the circumferential direction on the inner surface on the outer peripheral side of the end bracket 7 by the rotational force of the main fan 11. It reaches the discharge port 14 and is discharged outside the machine. At this time, the cooling air containing dust does not flow into the machine due to the dust separating plate 17 serving as a wall.
分離された他方の冷却風は塵埃を含んでおらず、 塵埃分離板 1 7の内 径側とファン主板 1 1 aの外径側との間の間隙を介して鉄心側に押込ま れる。 押込まれた冷却風は固定子鉄心 2及び回転子鉄心 3の一方の端部 を冷却し、 固定子鉄心 2 と回転子鉄心 3 との間の空隙及び回転子鉄心 3 に複数設けた軸方向に連続した通風ダク 卜 1 8 を冷却しながら排気側に 流れる。 排気側に到達した冷却風は固定子鉄心 2及び回転子鉄心 3の他 方の端部を冷却し、 排気口 1 5から機外に排出される。 この時、 回転軸 6の回転により補助ファン 1 2が回転しているので、 固定子鉄心 2及び 回転子鉄心 3の他方の端部の空間には空気の流動が起きる。  The other cooling air that has been separated does not contain dust, and is pushed into the iron core through a gap between the inner diameter side of the dust separation plate 17 and the outer diameter side of the fan main plate 11a. The cooling air pushed in cools one end of the stator core 2 and the rotor core 3, and the gap between the stator core 2 and the rotor core 3 and the axial direction provided in the rotor core 3 are plural. It flows to the exhaust side while cooling the continuous ventilation duct 18. The cooling air that has reached the exhaust side cools the other ends of the stator core 2 and the rotor core 3 and is discharged out of the machine through the exhaust port 15. At this time, since the auxiliary fan 12 is rotating by the rotation of the rotating shaft 6, air flows in the space at the other end of the stator core 2 and the rotor core 3.
以上説明した第 1 の実施の形態によれば、 主ファン 1 1 によって押込 んだ冷却風を塵埃分離板 1 7により 2つの冷却風、 すなわち塵埃を含む 冷却風と塵埃を含まない冷却風とに分灕し、 塵埃を含む冷却風は塵埃排 出口 1 4から機外へ排出し、 塵埃を含まない冷却風は塵埃分離板 1 7の 内径側とファン主板 1 1 aの外径側との間の空隙を介して機内に押込む ようにしたので、 塵埃を含まない冷却風によって機内を冷却でき、 機内 への塵埃進入及び長期間の運転による塵埃堆積を防げる。 従って、 定期 的な分解清掃が不要であり、 保守回帰の延長が図れる。 According to the first embodiment described above, the cooling air pushed by the main fan 11 is divided into two cooling airs by the dust separating plate 17, that is, a cooling air containing dust and a cooling air not containing dust. Cooling air containing dust is Dust-free cooling air is discharged from the outlet 14 to the outside of the machine and pushed into the machine through the gap between the inner diameter side of the dust separating plate 17 and the outer diameter side of the fan main plate 11a. Therefore, the inside of the machine can be cooled by the dust-free cooling air, which prevents dust from entering the inside of the machine and accumulating dust due to long-term operation. Therefore, periodic disassembly and cleaning are not required, and maintenance return can be extended.
また、 第 1 の実施の形態によれば、 エン ドブラケッ ト 7 と、 主ファン 1 1 と、 主ファン 1 1 のファン主板 1 1 aの外径側と対向するェン ドブ ラケッ ト 7部分に設けた塵埃分離板 1 7により囲まれる空間内で、 塵埃 を含む冷却風と塵埃を含まない冷却とに分離できるので、 塵埃除去のた めの機構を従来のものより簡単に構成することができ、 故障ポテンシャ ルの低減が図れる。 従って、 信頼性の向上が図れる。  According to the first embodiment, the end bracket 7, the main fan 11, and the end bracket 7 are provided on the end bracket 7 facing the outer diameter side of the fan main plate 11 a of the main fan 11. In the space surrounded by the dust separating plate 17, the cooling air containing dust and the cooling not containing dust can be separated, so that the mechanism for removing dust can be configured more easily than the conventional one. The failure potential can be reduced. Therefore, reliability can be improved.
また、 第 1 の実施の形態によれば、 ファン主板 1 1 aの外径側と塵埃 分離板 1 7の内径側との間の空隙の通風断面積を塵埃排出口 1 4の通風 断面積よリも大きく したので、 その空隙を介して機内に押込まれる冷却 風の風量を多く、 かつ風速を遅くでき、 塵埃排出口 1 4から排出される 冷却風の風量を少なく、 かつ風速を速くできる。 従って、 塵埃を含む冷 却風を風速の速い塵埃排出口 1 4から確実に排出できると共に、 機内を 多量の冷却風で冷却でき、 上記効果を向上できる。  Further, according to the first embodiment, the ventilation cross-sectional area of the gap between the outer diameter side of the fan main plate 11 a and the inner diameter side of the dust separation plate 17 is determined by the ventilation cross-section area of the dust outlet 14. As the air flow is increased, the amount of cooling air pushed into the machine through the gap can be increased and the air speed can be reduced, and the amount of cooling air discharged from the dust outlet 14 can be reduced and the air speed can be increased. . Therefore, the cooling air containing dust can be reliably discharged from the dust outlet 14 having a high wind speed, and the inside of the machine can be cooled by a large amount of cooling air, so that the above effect can be improved.
また、 第 1 の実施の形態によれば、 エン ドブラケッ ト 7 を反鉄心側に 張出した形状とすると共に、 主ファン 1 1 のファン主板 1 1 aをエン ド ブラケッ ト 7に沿った形状とし、 ファン主板 1 1 aのェンドプラケッ 卜 7側にファンべーン 1 l bを設けたので、 主ファン 1 1 を回転子鉄心 3 と軸受装置 9 との間の回転軸 6上に設置でき、 軸方向の長さを短くでき る。 従って、 電動機の小型軽量化が図れる。  Further, according to the first embodiment, the end bracket 7 has a shape protruding toward the non-iron core side, and the fan main plate 11 a of the main fan 11 has a shape along the end bracket 7, Since a fan vane 1 lb is provided on the end bracket 7 side of the fan main plate 11a, the main fan 11 can be installed on the rotating shaft 6 between the rotor core 3 and the bearing device 9, and the axial direction The length can be shortened. Therefore, the size and weight of the motor can be reduced.
また、 第 1 の実施の形態によれば、 入気口 1 3 とファンべ一ン 1 1 b とをほぼ直線配置としたので、 入気口 1 3 を介して取込む冷却風の通風 損失を小さくでき、 主ファン 1 1 の径を小さく しても必要な冷却風の風 量を容易に確保できる。 従って、 電動機の低騒音化が図れる。 Further, according to the first embodiment, the inlet 13 and the fan van 1 1 b Are arranged almost linearly, so that the ventilation loss of the cooling air taken in through the air inlet 13 can be reduced, and the required amount of cooling air can be easily secured even if the diameter of the main fan 11 is reduced. it can. Therefore, the noise of the motor can be reduced.
また、 第 1の実施の形態によれば、 ファンべ一ン 1 1 bの内径側と入 気口 1 3 との間の間隔を 3 O ram以上あけたので、 ファンべ一ン 1 1 b と 入気口 1 3 との間の空間に発生する騒音を低滅できる。 すなわちファン の騒音はファンベーンが空気を切る音であリ、 その発生は空気の疎密が 原因である。 ここで、 主ファン 1 1 の騒音について考えてみると、 主フ アン 1 1 の騒音は入気口 1 3 とファンべ一ン 1 1 b との間の空間が発生 源であり、 入気口 1 3のある部分と入気口 1 3のない部分との空気の密 度の変化によるものである。 しかし、 この騒音は入気口 1 3 とファンべ —ン 1 1 bとの空間距離を大きくあけることで、 空気の疎密の変化が小 さくなり低減できる。 従って、 第 1の実施の形態ではその低減効果が顕 著になる空間距離、 すなわち 3 0匪以上あけて、 上記効果を向上してい る。  Also, according to the first embodiment, the distance between the inner diameter side of the fan vane 11 b and the air inlet 13 is set to 3 O ram or more. Noise generated in the space between the air inlets 13 can be reduced. In other words, the noise of the fan is the sound of the fan vanes cutting the air, which is caused by the air density. Here, considering the noise of the main fan 11, the noise of the main fan 11 is generated from the space between the inlet 13 and the fan van 11 b. This is due to the change in air density between the portion with 13 and the portion without the inlet 13. However, this noise can be reduced by increasing the spatial distance between the inlet 13 and the fan vane 11b, thereby reducing the change in air density. Therefore, in the first embodiment, the above-described effect is improved by leaving a space distance at which the effect of the reduction is remarkable, that is, 30 or more bandages.
また、 第 1の実施の形態によれば、 ファンべ一ン 1 1 bの枚数と入気 口 1 3 との個数を互いに割切れない ( 1以外の公約数を持たない) 数の 組合わせとしたので、 ファンベーン 1 1 bと入気口 1 3 との間の空間に 発生する騒音のレベルを低減できる。 例えば入気口の個数を 1 2、 ファ ンベーンの枚数を 1 5及び 1 7 としたとき、 1 2 と 1 5の組合わせでは、 公約数が 1 の他に 3が存在するので、 一周 3 6 0 ° のうち 1 2 0 ° の 3 ケ所においてファンべ一ンと入気口の位置 (位相) が全く同じになり、 騒音を強め合い騒音レベルを高めてしまう。 一方、 1 2 と 1 7の組合わ せでは、 公約数が 1以外存在しないので、 一周 3 6 0 ° においてファン ベーンと入気口の位置 (位相) が全て異なり、 騒音を強め合うことがな いので、 騒音レベルを低減できる。 According to the first embodiment, the number of fan vanes 1 1b and the number of inlets 13 are not divisible by each other (no common divisor other than 1). As a result, the level of noise generated in the space between the fan vanes 11 b and the air inlet 13 can be reduced. For example, assuming that the number of inlets is 12 and the number of fans is 15 and 17, in the combination of 12 and 15, there are 3 in addition to 1 in common divisor. At three locations of 120 ° out of 0 °, the positions (phases) of the fan vane and the air inlet become exactly the same, and the noise is strengthened and the noise level is raised. On the other hand, in the combination of 12 and 17, since the common divisor does not exist except for 1, the position (phase) of the fan vane and the air inlet are all different at 360 ° around one round, and the noise cannot be strengthened. Noise level can be reduced.
また、 ファンべ一ンの枚数を N b, 入気口の個数を N s, ファンべ一 ンの枚数と入気口の個数の公約数を M, 回転数を rpm としたとき、 発生 する騒音の周波数 f は、  The noise generated when the number of fan vanes is Nb, the number of inlets is Ns, the common divisor of the number of fan vanes and the number of inlets is M, and the number of revolutions is rpm. The frequency f of
f = N b X rpm X M/ 6 0 (H z )  f = N b X rpm X M / 60 (Hz)
又は、 Or
f = N s X rpm X M/ 6 0 (H z )  f = N s X rpm X M / 60 (H z)
となり、 1 2 と 1 5の組合わせでは、 1, 3の公約数を持つので、 1 2 倍, 1 5倍, 3 6倍, 4 5倍の周波数を有する騒音を発生する。 一方、 1 2 と 1 7の組合わせでは、 1 の公約数を持つので、 1 2倍, 1 7倍の 周波数を有する騒音を発生する。 ここで、 ある部分が管を構成し、 この 管の長さが Lであった場合、 その管における共鳴する波長は、 4 L, 4 L/ 2 , 4 L/ 3 , 4 LZ4…となり、 騷音の発生周波数の多い 1 2 と 1 5の組合わせでは共鳴しやすく、 騒音のレベルを高めやすい。 しか し、 騒音の発生周波数の少ない 1 2 と 1 7の組合わせでは共鳴を少なく でき、 騒音のレベルを低減できる。 従って、 上記効果をさらに向上でき る。 Then, the combination of 12 and 15 has a common divisor of 1, 3 and thus generates noise having frequencies of 12, 20, 15, 36, and 45 times. On the other hand, the combination of 12 and 17 has a common divisor of 1 and therefore generates noise with a frequency of 12 times and 17 times. Here, if a certain portion constitutes a tube, and the length of the tube is L, the wavelength of resonance in the tube becomes 4 L, 4 L / 2, 4 L / 3, 4 LZ4… The combination of 12 and 15 with high sound generation frequency tends to resonate easily and increase the noise level. However, the combination of 12 and 17 with low noise generation frequency can reduce resonance and reduce noise level. Therefore, the above effects can be further improved.
また、 第 1の実施の形態によれば、 回転子鉄心 3の軸受装置 1 0側の 端部に補助ファン 1 2 を設けたので、 鉄心とエン ドブラケッ ト 8 との間 の空間に空気の流動が起き、 高温の冷却風の熱がその空間にこもるのを 抑制でき、 軸受装置 1 0の温度上昇を抑制できる。  Further, according to the first embodiment, since the auxiliary fan 12 is provided at the end of the rotor core 3 on the bearing device 10 side, air flows into the space between the core and the end bracket 8. Then, the heat of the high-temperature cooling air can be suppressed from being trapped in the space, and the temperature rise of the bearing device 10 can be suppressed.
また、 第 1 の実施の形態によれば、 補助ファン 1 2のファン主板 12a を軸受装置 1 0の軸受カバ一 1 6に沿った形状としたので、 ファン主板 1 2 aと軸受カバー 1 6 との間の空隙を小さく してこの空隙の負圧を大 きくでき、 径方向に流れる冷却風の風量を増やしてファン主板 1 2 aと 軸受カバー 1 6 との間の熱をより逃げやすくできる。 従って、 軸受装置 1 0の温度上昇を更に抑制できる。 また、 径方向に流れる冷却風の風量 を増やせるので、 主ファン 1 1の径を小さくでき、 更なる低騒音化を可 能にできる。 According to the first embodiment, the fan main plate 12a of the auxiliary fan 12 is formed along the bearing cover 16 of the bearing device 10 so that the fan main plate 12a and the bearing cover 16 are The negative pressure in this air gap can be increased by reducing the air gap between them, increasing the amount of cooling air flowing in the radial direction and increasing the fan main plate 12a. Heat from the bearing cover 16 can be more easily dissipated. Therefore, the temperature rise of the bearing device 10 can be further suppressed. In addition, since the amount of cooling air flowing in the radial direction can be increased, the diameter of the main fan 11 can be reduced, and the noise can be further reduced.
本発明の第 2の実施の形態である車両駆動用開放型電動機を第 5図乃 至第 8図に示す。 尚、 前述した第 1の実施の形態と同様の部分には同符 号を付し、 その説明を省略する。 本実施の形態では、 エンドブラケッ ト 7 と第 1 の実施の形態で述べた分離機構の 1つである塵埃分離板 1 7 を 一体化し、 フアン主板 1 1 aの外径側と対向するェン ドプラケッ 卜 7の 固定子枠 1 との接続部を内径側に突出させている。 すなわち突出部 7 d を形成している。 尚、 主ファン 1 1 の側板は省略し、 エンドブラケッ ト 7の側面部 7 c を代用している。  FIGS. 5 to 8 show an open-type motor for driving a vehicle according to a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, the end bracket 7 and the dust separation plate 17 which is one of the separation mechanisms described in the first embodiment are integrated, and the end bracket facing the outer diameter side of the fan main plate 11a is integrated. The connecting portion of the Dopplet 7 with the stator frame 1 protrudes toward the inner diameter side. That is, the protrusion 7 d is formed. The side plate of the main fan 11 is omitted, and the side wall 7c of the end bracket 7 is substituted.
エンドブラケッ ト 7の外周面部に設けた塵埃排出口 1 4 と固定子枠 1 の軸受装置 1 0側の外周部に 1つ設けた入気口 2 9 との間には、 塵埃排 出口 1 4から排出される塵埃を含む冷却風を鉄心とェン ドブラケッ ト 8 との間の空間に供給する通風管 3 0を設けている。 尚、 本実施の形態で は、 機内を冷却し終えた冷却風の複数の排出口 1 5 をエン ドブラケッ ト 8ではなく、 固定子枠 1の外周部に入気口 2 9 と同一周面上に配置され るように複数設けている。  A dust outlet 14 is provided between the dust outlet 14 provided on the outer peripheral surface of the end bracket 7 and one inlet 29 provided on the outer peripheral portion of the stator frame 1 on the bearing device 10 side. A ventilation tube 30 is provided to supply cooling air containing dust discharged from the space to the space between the iron core and the end bracket 8. In the present embodiment, the plurality of outlets 15 for the cooling air after cooling the inside of the machine are not provided on the end bracket 8 but on the outer peripheral portion of the stator frame 1 on the same peripheral surface as the inlet 29. Are provided so as to be arranged in the same location.
また、 本実施の形態では、 回転子鉄心 3の軸受装置 1 0側の端部には 第 1の実施の形態で述べた補助フアン 1 2の代わりに、 整流板 3 1 を設 けている。 整流板 3 1 は通風ダク 卜 1 8 を流れてきた冷却風を径方向外 側に案内できるように、 回転子鉄心 3の端部から径方向外側に向かって 傾斜した形状のものである。 換言すれば、 その取付部から径方向に遠ざ かるに従って回転子鉄心 3から遠ざかるように形成したものである。 以上説明した第 2の実施の形態によれば、 エン ドブラケッ ト 7の外周 面部に設けた塵埃排出口 1 4 と固定子枠 1 の軸受装置 1 0側の外周部に 1つ設けた入気口 2 9 との間に通風管 3 0を設けたので、 ェンドプラッ ケッ 卜 7に一体形成した塵埃分離するための突出部分において 2つに分 離された冷却風のうち、 塵埃を含む冷却風を通風管 3 0を介して冷却風 の排出側、 すなわち鉄心とエン ドブラッケト 8 との空間部分に供給でき る。 このようにすれば、 機内を冷却しながら流れてきた塵埃を含まない 冷却風よりも温度の低い塵埃を含む冷却風によって鉄心とェンドプラッ ケ卜 8 との空間部分を冷却することができ、 その空間部分の冷却効果を 第 1 の実施の形態よりも向上できる。 尚、 塵埃を含む冷却風は塵埃を含 まない冷却風よりも風量が少ないので、 鉄心どェン ドブラッケ 卜 8 との 空間部分を冷却した後は塵埃を含まない冷却風と共に、 排気口 1 5 を介 して機外に排出される。 従って、 第 1の実施の形態の効果に加え、 冷却 効率の向上が図れる。 産業上の利用可能性 In the present embodiment, a rectifying plate 31 is provided at the end of the rotor core 3 on the bearing device 10 side instead of the auxiliary fan 12 described in the first embodiment. The current plate 31 has a shape that is inclined radially outward from the end of the rotor core 3 so that the cooling air flowing through the ventilation duct 18 can be guided radially outward. In other words, it is formed so as to move away from the rotor core 3 as it moves radially away from the mounting portion. According to the second embodiment described above, the dust outlet 14 provided on the outer peripheral surface of the end bracket 7 and the inlet provided on the outer peripheral portion of the stator frame 1 on the bearing device 10 side are provided. The ventilation pipe 30 is provided between the cooling air and the cooling air containing dust. The cooling air can be supplied to the discharge side of the cooling air, that is, the space between the iron core and the end bracket 8 through the pipe 30. In this way, the space between the iron core and the end bracket 8 can be cooled by the cooling air containing dust, which has a lower temperature than the cooling air that does not contain the dust and has flown while cooling the inside of the machine. The cooling effect of the part can be improved as compared with the first embodiment. Since the cooling air containing dust has a smaller air volume than the cooling air not containing dust, after cooling the space between the iron core and the end bracket 8, the cooling air containing no dust and the exhaust air 15 Is discharged out of the aircraft via Therefore, in addition to the effects of the first embodiment, the cooling efficiency can be improved. Industrial applicability
本発明によれば、 保守回帰の延長化が図れる車両駆動用開放型電動機 を提供できる。 また、 故障ポテンシャルの増大を招く ことなく保守回帰 の延長化が図れる信頼性の高い車両駆動用開放型電動機を提供できる。 さらに、 冷却風の排気側の軸受装置の冷却効率の向上、 例えば温度上昇 を抑えることができる車両駆動用開放型電動機を提供できる。  ADVANTAGE OF THE INVENTION According to this invention, the open-ended motor for vehicle drive which can achieve extension of maintenance return can be provided. Further, it is possible to provide an open-type electric motor for driving a vehicle, which can extend the return to maintenance without increasing the failure potential. Further, it is possible to provide an open-type motor for driving a vehicle, which can improve the cooling efficiency of the bearing device on the exhaust side of the cooling wind, for example, can suppress a rise in temperature.

Claims

請 求 の 範 囲 The scope of the claims
1 . 固定子枠の内側に設けた固定子と、 該固定子の内側に設けた回転子 と、 該回転子の回転軸を支承する軸受装置と、 該固定子枠の端部に設け たブラケッ 卜と、 前記回転子と前記軸受装置との間の回転軸に設けたフ アンとを有してなる車両駆動用開放型電動機において、 前記ブラケッ 卜 は、 前記固定子枠と前記軸受装置との間で反鉄心側に張出した形状を有 し、 前記ファンは、 ファン主板と、 該ファン主板の前記ブラケッ ト側に 設けると共に前記ブラケッ 卜の張出した空間内に配置したファンべ一ン からなることを特徴とする車両駆動用開放型電動機。  1. A stator provided inside the stator frame, a rotor provided inside the stator, a bearing device for supporting a rotating shaft of the rotor, and a bracket provided at an end of the stator frame. And a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket comprises a stator frame and the bearing device. The fan has a shape projecting toward the anti-iron side, and the fan includes a fan main plate, and a fan van provided on the bracket side of the fan main plate and arranged in a space where the bracket projects. An open electric motor for driving a vehicle.
2 . 固定子枠の内側に設けた固定子と、 該固定子の内側に設けた回転子 と、 該回転子の回転軸を支承する軸受装置と、 該固定子枠の端部に設け たブラケッ 卜と、 前記回転子と前記軸受装置との間の回転軸に設けたフ ァンとを有してなる車両駆動用開放型電動機において、 前記ブラケッ ト は、 前記固定子枠との接続部からほぼ軸方向反鉄心側に伸びた外周面部 と、 前記軸受装置との接続部からほぼ軸方向反鉄心側に伸びた内周面部 と、 前記外周面部と前記内周面部との間に設けた側面部からなり、 前記 ファンは、 前記側面部と平行な部分及び該平行部分から前記回転軸との 接続部に至る傾斜した部分からなるファン主板と、 前記ファン主板の前 記ブラケッ ト側に設けると共に前記外周面部, 前記内周面部及び前記側 面部によって囲まれた空間内に配置したファンべ一ンからなることを特 徴とする車両駆動用開放型合電動機。  2. A stator provided inside the stator frame, a rotor provided inside the stator, a bearing device for supporting a rotating shaft of the rotor, and a bracket provided at an end of the stator frame. And a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket is connected to the stator frame from a connection portion with the stator frame. An outer peripheral surface extending substantially toward the axially opposite core; an inner peripheral surface extending substantially toward the axially opposite core from the connection with the bearing device; and a side surface provided between the outer peripheral surface and the inner peripheral surface. A fan main plate including a portion parallel to the side surface portion and an inclined portion extending from the parallel portion to a connection portion with the rotating shaft; and a fan provided on the bracket side of the fan main plate. The outer peripheral surface, the inner peripheral surface, and the side surface Surrounded by the vehicle-driving open if motor to feature in that it consists of the placed fan base one on to the space.
3 . 固定子枠の内側に設けた固定子と、 該固定子の内側に設けた回転子 と、 該回転子の回転軸を支承する軸受装置と、 該固定子枠の端部に設け たブラケッ 卜と、 前記回転子と前記軸受装置との間の回転軸に設けたフ アンとを有してなる車両駆動用開放型電動機において、 前記ブラケッ 卜 は、 前記固定子枠と前記軸受装置との間で反鉄心側に張出した形状を有 し、 前記ファンは、 前記ブラケッ ト側に傾斜させて設けたファン主板と、 該ファン主板の前記ブラケッ ト側に設けたファンべ一ンからなることを 特徴とする車両駆動用開放型電動機。 3. A stator provided inside the stator frame, a rotor provided inside the stator, a bearing device for supporting a rotating shaft of the rotor, and a bracket provided at an end of the stator frame. An open-type motor for driving a vehicle, comprising: a bracket; and a fan provided on a rotating shaft between the rotor and the bearing device. The fan has a shape projecting to the side opposite to the iron core between the stator frame and the bearing device, the fan includes a fan main plate inclined to the bracket side, and the bracket of the fan main plate. An open-type motor for driving a vehicle, comprising a fan van provided on the side.
4 . 固定子枠の内側に設けた固定子と、 該固定子の内側に設けた回転子 と、 該回転子の回転軸を支承する軸受装置と、 該固定子枠の端部に設け たブラケッ トと、 前記回転子と前記軸受装置との間の回転軸に設けたフ アンとを有してなる車両駆動用開放型電動機において、 前記ブラケッ ト は、 前記固定子枠と前記軸受装置との間で反鉄心側に張出した形状を有 し、 前記ファンは、 ファン主板と、 該ファン主板の前記ブラケッ ト側に 設けると共に前記ブラケッ 卜の張出した空間内に配置したファンべ一ン からなり、 前記ファン主板の外径側には、 冷却風の分離板を設けたこと を特徴とする車両駆動用開放型電動機。  4. A stator provided inside the stator frame, a rotor provided inside the stator, a bearing device for supporting a rotating shaft of the rotor, and a bracket provided at an end of the stator frame. And a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket includes a stator frame and the bearing device. The fan has a shape protruding toward the non-iron side, and the fan includes a fan main plate, and a fan van provided on the bracket side of the fan main plate and arranged in a space where the bracket protrudes, An open-type electric motor for driving a vehicle, wherein a cooling air separating plate is provided on an outer diameter side of the fan main plate.
5 . 固定子枠の内側に設けた固定子と、 該固定子の内側に設けた回転子 と、 該回転子の回転軸を支承する軸受装置と、 該固定子枠の端部に設け たブラケッ トと、 前記回転子と前記軸受装置との間の回転軸に設けたフ アンとを有してなる車両駆動用開放型電動機において、 前記ブラケッ 卜 は、 前記固定子枠と前記軸受装置との間で反鉄心側に張出した形状を有 し、 前記ファンは、 ファン主板と、 該ファン主板の前記ブラケッ ト側に 設けると共に前記ブラケッ 卜の張出した空間内に配置したファンべ一ン からなり、 前記ファンべ一ンの内径側には、 冷却風の入気口を設けたこ とを特徴とする車両駆動用開放型電動機。  5. A stator provided inside the stator frame, a rotor provided inside the stator, a bearing device for supporting a rotating shaft of the rotor, and a bracket provided at an end of the stator frame. And a fan provided on a rotating shaft between the rotor and the bearing device, wherein the bracket comprises a stator frame and the bearing device. The fan has a shape protruding toward the non-iron side, and the fan includes a fan main plate, and a fan van provided on the bracket side of the fan main plate and arranged in a space where the bracket protrudes, An open-type electric motor for driving a vehicle, wherein an inlet for cooling air is provided on the inner diameter side of the fan vane.
6 . 固定子枠の内側に設けた固定子と、 該固定子の内側に設けた回転子 と、 該回転子の回転軸を支承する軸受装置と、 該固定子枠の端部に設け たブラケッ 卜と、 前記回転子と前記軸受装置との間の回転軸に設けたフ アンとを有してなる車両駆動用開放型電動機において、 前記ブラケッ 卜 は、 前記固定子枠と前記軸受装置との間で反鉄心側に張出した形状を有 し、 前記ファンは、 ファン主板と、 該ファン主板の前記ブラケッ ト側に 設けると共に前記ブラケッ 卜の張出した空間内に配置したファンベーン からなり、 前記ファンべーンの内径側には、 冷却風の入気口を設け、 前 記ファンべ一ンの外径側には、 塵埃を含む冷却風の排出口を設けたこと を特徴とする車両駆動用開放型電動機。 6. A stator provided inside the stator frame, a rotor provided inside the stator, a bearing device for supporting a rotating shaft of the rotor, and a bracket provided at an end of the stator frame. And a fan provided on a rotating shaft between the rotor and the bearing device. In the open-type motor for driving a vehicle, the bracket has a shape projecting toward the non-core side between the stator frame and the bearing device, and the fan includes a fan main plate and A fan vane provided on the bracket side of the fan main plate and arranged in a space where the bracket projects, and an inlet for cooling air is provided on the inner diameter side of the fan vane; An open-type motor for driving a vehicle, wherein an outlet for cooling air containing dust is provided on an outer diameter side of the fan vane.
7 . 前記ファンベーンの内径側と入気口との距離を 3 O mm以上としたこ とを特徴とする請求項 5又は 6に記載の車両駆動用開放型電動機。  7. The open-type motor for driving a vehicle according to claim 5, wherein a distance between an inner diameter side of the fan vane and an air inlet is 3 O mm or more.
8 . 前記ファンべ一ンの枚数と前記入気口の個数を互いに割切れない数 としたことを特徴とする請求項 5又は 6に記載の車両駆動用開放型電動 機。 7. The open-type motor for driving a vehicle according to claim 5, wherein the number of the fan vanes and the number of the air inlets are numbers that are not divisible from each other.
9 . 前記分離板は、 前記ファン主板の外径よりも大きい内径を有するリ ング状の板であることを特徴とする請求項 4に記載の車両駆動用開放型  9. The open-type vehicle drive according to claim 4, wherein the separation plate is a ring-shaped plate having an inner diameter larger than an outer diameter of the fan main plate.
1 0 . 冷却風の排出側に補助ファンを設けたことを特徴とする請求項 1 乃至 6のいずれかに記載の車両駆動用開放型電動機。 10. The open-type motor for driving a vehicle according to any one of claims 1 to 6, wherein an auxiliary fan is provided on a cooling air discharge side.
1 1 . 前記補助ファンのファン主板は、 冷却風の排出側に設けた軸受カ バーの形状に沿って径方向に伸びたものであることを特徴とする請求項 11. The fan main plate of the auxiliary fan extends radially along a shape of a bearing cover provided on a cooling air discharge side.
1 0記載の車両駆動用開放型電動機。 10. The open-type electric motor for driving a vehicle according to 10.
1 2 . 固定子, 該固定子の内側に設けた回転子及び該回転子の回転軸に 設けたファンを収納した固定子枠の軸方向の両側をブラケッ 卜により塞 いでなる車両駆動用開放型電動機において、 前記ブラケッ 卜の一方には 冷却風の入気口を設け、 前記ブラケッ 卜の一方又は前記固定子枠には冷 却風の第 1 の排気口を設け、 前記ブラヶッ 卜の他方又は前記固定子枠に は冷却風の第 2の排気口を設け、 前記ブラケッ 卜の一方又は前記固定子 枠の内周には前記ファンの外径側と対向するように円環状の突出部を形 成し、 該突出部と前記ブラケッ 卜の一方との間には前記第 1 の排気口の 開口部を配置してなることを特徴とする車両駆動用開放型電動機。 12. An open vehicle drive type in which both sides in the axial direction of a stator frame containing a stator, a rotor provided inside the stator, and a fan provided on a rotating shaft of the rotor are closed by brackets. In the motor, one of the brackets is provided with an inlet for cooling air, one of the brackets or the stator frame is provided with a first air outlet for cooling air, and the other of the brackets or the On the stator frame Is provided with a second exhaust port for cooling air, and an annular projection is formed on one of the brackets or on the inner periphery of the stator frame so as to face the outer diameter side of the fan. An open-type electric motor for driving a vehicle, wherein an opening of the first exhaust port is arranged between a portion and one of the brackets.
1 3 . 固定子, 該固定子の内側に設けた回転子及び該回転子の回転軸に 設けたファンを収納した固定子枠の軸方向の両側をブラケッ 卜により塞 いでなる車両駆動用開放型電動機において、 前記ブラケッ 卜の一方には 冷却風の入気口を設け、 前記ブラケッ 卜の一方又は前記固定子枠には冷 却風の第 1 の排気口を設け、 前記ブラケッ 卜の他方又は前記固定子枠に は冷却風の第 2の排気口を設け、 前記ブラケッ 卜の一方又は前記固定子 枠の内周には前記フアンの外径側と対向するように円環状の突出部を形 成し、 該突出部と前記ブラケッ 卜の一方との間には前記第 1 の排気口の 開口部を配置し、 前記第 1の排気口と前記第 2の排気口側に設けた第 2 の入気口との間にはそれらを連通する通風管を設けたことを特徴とする 車両駆動用開放型電動機。  13. An open vehicle drive type in which both sides in the axial direction of a stator frame containing a stator, a rotor provided inside the stator, and a fan provided on a rotation shaft of the rotor are closed by brackets. In the electric motor, one of the brackets is provided with an inlet for cooling air, one of the brackets or the stator frame is provided with a first air outlet for cooling air, and the other of the brackets or the A second exhaust port for cooling air is provided in the stator frame, and an annular protrusion is formed on one of the brackets or on the inner periphery of the stator frame so as to face the outer diameter side of the fan. An opening of the first exhaust port is disposed between the protrusion and one of the brackets, and a second inlet provided on the first exhaust port and the second exhaust port side. An open type for driving a vehicle, characterized in that a ventilation pipe is provided between the vent and the vent. Electric motor.
1 4 . 前記部材は、 前記入気口から取込んだ外気を塵埃を含む外気と塵 埃を含まない外気とに分離する分離板を含む分離機構であることを特徴 とする請求項 1 2又は 1 3記載の車両駆動用開放型電動機。  14. The member according to claim 12, wherein the member is a separation mechanism including a separation plate that separates outside air taken from the air inlet into outside air containing dust and outside air containing no dust. 13. An open-type electric motor for driving a vehicle according to item 3.
1 5 . 前記第 1 の排出口は、 前記ブラケッ 卜の一方の外周面に 1つ設け たこと特徴とする請求項 1 2又は 1 3記載の車両駆動用開放型電動機。 15. The open-type electric motor for driving a vehicle according to claim 12, wherein one of the first discharge ports is provided on one outer peripheral surface of the bracket.
1 6 . 前記ブラケッ トの一方は、 中心部側に凹部を有すると共に、 該凹 部の内周面に前記入気口を複数設けたことを特徴とする請求項 1 2又は 1 3に記載の車両駆動用開放型電動機。 16. The device according to claim 12, wherein one of the brackets has a concave portion on a center portion side, and a plurality of the air inlets are provided on an inner peripheral surface of the concave portion. Open motor for driving vehicles.
1 7 . 固定子枠の内側に設けた固定子と、 該固定子の内側に設けた回転 子と、 葭回転子の回転軸を支承する軸受装置と、 該固定子枠の端部に設 けたブラケッ トと、 前記回転子と前記軸受装置との間の回転軸に設けた ファンと、 外気を機内に取込むための入気口と、 機内に取込んだ外気を 機外に排出するための第 1 の排気口とを有してなる車両駆動用開放型電 動機において、 前記フアンの外径側と対向する部分に内径側に伸びる部 材を設けると共に、 該部材よりも外側の部分に機内に取込んだ外気を機 外に排出するための第 2の排気口を設けたことを特徴とする車両駆動用 開放型電動機。 17. A stator provided inside the stator frame, a rotor provided inside the stator, a bearing device for supporting the rotating shaft of the Yoshi rotor, and a stator provided at an end of the stator frame. Beam brackets, a fan provided on the rotating shaft between the rotor and the bearing device, an air inlet for taking in outside air into the machine, and discharging the outside air taken into the machine outside the machine. An open-type motor for driving a vehicle, comprising: a first exhaust port, a member extending to the inner diameter side at a portion facing the outer diameter side of the fan, and a portion extending outside the member. An open-type motor for driving a vehicle, wherein a second exhaust port is provided for discharging outside air taken into the machine to the outside of the machine.
1 8 . 固定子枠の内側に設けた固定子と、 該固定子の内側に設けた回転 子と、 該回転子の回転軸を支承する軸受装置と、 該固定子枠の端部に設 けたブラケッ トと、 前記回転子と前記軸受装置との間の回転軸に設けた ファンと、 外気を機内に取込むための入気口ど、 機内に取込んだ外気を 機外に排出するための第 1 の排気口とを有してなる車両駆動用開放型電 動機において、 前記フアンの外径側と対向する部分に内径側に伸びる部 材を設けると共に、 該部材よりも外側の部分に機内に取込んだ外気を機 外に排出するための第 2の排気口を設け、 かつ該第 2の排気口と前記第 18. A stator provided inside the stator frame, a rotor provided inside the stator, a bearing device for supporting a rotating shaft of the rotor, and provided at an end of the stator frame. A bracket, a fan provided on a rotating shaft between the rotor and the bearing device, an air inlet for taking in outside air into the machine, and an exhaust port for discharging outside air taken into the machine outside the machine. In the open-type motor for driving a vehicle having a first exhaust port, a member extending to the inner diameter side is provided at a portion facing the outer diameter side of the fan, and the in-machine portion is provided at a portion outside the member. A second exhaust port for exhausting outside air taken in to the outside of the machine, and the second exhaust port and the second exhaust port.
1の排気口側に設けた第 2の入気口とを連通する通風管を設けたことを 特徴とする車両駆動用開放型電動機。 An open-type electric motor for driving a vehicle, wherein a ventilation pipe is provided to communicate with a second air inlet provided on an exhaust port side of the first air motor.
1 9 . 前記部材は、 前記入気口から取込んだ外気を塵埃を含む外気と塵 埃を含まない外気とに分離する分離板を含む分離機構であることを特徴 とする請求項 1 7又は 1 8記載の車両駆動用開放型電動機。  19. The member according to claim 17, wherein the member is a separation mechanism including a separation plate that separates outside air taken in from the air inlet into outside air containing dust and outside air containing no dust. 18. An open-type electric motor for driving a vehicle according to item 8.
2 0 . 固定子と、 該固定子の内側に位置する回転子と、 該回転子の回転 軸に設けた 1つ又は 2つのファンと、 これらを内蔵するように形成した ハウジングと、 該ハウジングの軸方向の片側又は両側を塞ぐ閉塞部材と を備え、 該閉塞部材は前記ハウジングの一部を兼ねてもよく、 前記閉塞 部材の一方には入気孔又は入気管を開き、 前記閉塞部材乃至前記ハウジ ングには少なく とも 2つの排気孔又は排気管を開き、 該排気孔又は排気 管のうちの 1つは前記吸気孔又は入気管側に設置し、 他の排気孔又は排 気管は前記入気孔又は入気管とは軸方向にて反対側に位置するように設 置したことを特徴とする車両駆動用開放型電動機。 20. A stator, a rotor positioned inside the stator, one or two fans provided on a rotation shaft of the rotor, a housing formed to incorporate these, and a A closing member that closes one or both sides in the axial direction, the closing member may also serve as a part of the housing, and one of the closing members opens an air inlet or an air inlet pipe, and the closing member or the housing For opening, at least two exhaust holes or exhaust pipes are opened, one of the exhaust holes or exhaust pipes is installed on the intake hole or intake pipe side, and the other exhaust hole or exhaust pipe is installed on the intake port or exhaust pipe. An open-type electric motor for driving a vehicle, wherein the open-type electric motor is provided so as to be located on an opposite side in an axial direction from an intake pipe.
2 1 . 前記入気孔又は入気管側の排気孔又は排気管は、 前記ハウジング の外部を出て前記第 2の排気孔又は排気管側に開けた第 2の入気孔又は 入気管に連通することを特徴とする請求項 2 0に記載の車両駆動用開放 型電動機。  21. The exhaust hole or exhaust pipe on the intake port side or the intake pipe side should exit from the housing and communicate with the second intake port or the intake pipe opened on the second exhaust port or exhaust pipe side. The open-type electric motor for driving a vehicle according to claim 20, characterized in that:
2 2 . 固定子と、 該固定子の内側に設けた回転子と、 これらを取り囲む ハウジングと、 前記回転子の回転軸と、 該ハウジングの両側を塞ぐ閉塞 部材と、 該閉塞部材の一方と前記固定子及び回転子との間の前記回転軸 に設けたファンとを備え、 前記閉塞部材の一方には入気孔を設け、 前記 閉塞部材の一方又はハウジングには第 1の排気孔を設け、 前記閉塞部材 の他方又はハウジングには第 2の排気孔を設けると共に、 前記フアンに より前記入気孔から前記第 1 の排気孔へほぼ直進する空気流と、 前記固 定子及び回転子へ分流する空気流を形成することを特徴とする車両駆動 用開放型電動機。  22. A stator, a rotor provided inside the stator, a housing surrounding the stator, a rotation shaft of the rotor, a closing member for closing both sides of the housing, one of the closing members, A fan provided on the rotating shaft between the stator and the rotor, an air inlet provided on one of the closing members, a first exhaust hole provided on one of the closing members or the housing, A second exhaust hole is provided in the other of the closing member or the housing, and an air flow that is substantially straight from the inlet hole to the first exhaust hole by the fan and an air flow that is diverted to the stator and the rotor. An open-type electric motor for driving a vehicle, characterized in that:
2 3 . 固定子と、 該固定子の内側に設けた回転子と、 これらを取り囲む ハウジングと、 前記回転子の回転軸と、 該ハウジングの両側を塞ぐ閉塞 部材と、 該閉塞部材の一方と前記固定子及び回転子との間の前記回転軸 に設けたファンとを備え、 前記閉塞部材の一方には入気孔を設け、 前記 閉塞部材の一方又はハウジングには第 1 の排気孔を設け、 前記閉塞部材 の他方又はハウジングには第 2の排気孔を設けると共に、 前記フアンに より前記入気孔から前記第 1 の排気孔へほぼ直進する空気流と、 前記固 定子及び回転子へ分流する空気流を形成し、 かつ前記第 1 の排気孔へほ ぼ直進する空気流は、 前記閉塞部材の他方と前記固定子及び回転子との 間の空間に導く ことを特徴とする車両駆動用開放型電動機。 23. A stator, a rotor provided inside the stator, a housing surrounding the stator, a rotation shaft of the rotor, a closing member for closing both sides of the housing, one of the closing members, A fan provided on the rotating shaft between the stator and the rotor, an air inlet provided on one of the closing members, a first exhaust hole provided on one of the closing members or the housing, A second exhaust hole is provided in the other of the closing member or the housing, and an air flow that is substantially straight from the inlet hole to the first exhaust hole by the fan and an air flow that is diverted to the stator and the rotor. And the first exhaust hole is An open-type electric motor for driving a vehicle, wherein an airflow that travels straight is guided to a space between the other of the closing member and the stator and the rotor.
2 4 . 前記第 1 の排気孔へほぼ直進する空気流は塵埃を含み、 前記固定 子及び回転子へ分流する空気流は塵埃を含まないことを特徴とする請求 項 2 2又は 2 3に記載の車両駆動用開放型電動機。 24. The air flow that travels substantially straight to the first exhaust hole contains dust, and the air flow that diverges to the stator and the rotor does not contain dust. Open-type electric motor for driving vehicles.
2 5 . 固定子と、 該固定子の内側に設けた回転子と、 該固定子及び回転 子を取り囲む固定子枠と、 該固定子枠の両端を塞ぐブラケッ トと、 該ブ ラケッ 卜の一方に設けた入気孔と、 前記ブラケッ 卜の他方に設けた排気 孔とを備え、 前記ブラケッ 卜の一方と前記固定子及び回転子との間の空 間には冷却風を機内に取込む第 1 のファンを配置した車両駆動用開放型 電動機において、 前記ブラケッ 卜の他方と前記固定子及び回転子との間 の空間に第 2のファンを配置したことを特徴とする車両駆動用開放型電 動機。  25. A stator, a rotor provided inside the stator, a stator frame surrounding the stator and the rotor, a bracket covering both ends of the stator frame, and one of the brackets A ventilation hole provided on the other side of the bracket and an exhaust hole provided on the other side of the bracket, and a space between one of the brackets and the stator and the rotor for taking in cooling air into the machine. An open-type motor for driving a vehicle, wherein the second fan is disposed in a space between the other of the brackets and the stator and the rotor. .
2 6 . 前記第 2のファンは、 前記回転軸に取付けられ、 該取付部から径 方向に遠ざかるにしたがって前記回転子から遠ざかるように形成したも のであることを特徴とする請求項 2 4に記載の車両駆部動用開放型電動 機。  26. The second fan according to claim 24, wherein the second fan is attached to the rotating shaft, and is formed so as to be distant from the rotor as the radiating distance from the attaching portion is increased. Open-type electric motor for driving the vehicle.
2 7 . 前記第 2のファンとして整流板を用いたことを特徴とする請求項 2 5又は 2 6に記載の車両駆動用開放型電動機。  27. The open-type electric motor for driving a vehicle according to claim 25, wherein a current plate is used as the second fan.
PCT/JP1999/000617 1998-02-13 1999-02-12 Open type electric motor for driving vehicle WO1999041822A1 (en)

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