WO2021176951A1 - Dispositif d'entraînement de moteur-roue - Google Patents

Dispositif d'entraînement de moteur-roue Download PDF

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Publication number
WO2021176951A1
WO2021176951A1 PCT/JP2021/004352 JP2021004352W WO2021176951A1 WO 2021176951 A1 WO2021176951 A1 WO 2021176951A1 JP 2021004352 W JP2021004352 W JP 2021004352W WO 2021176951 A1 WO2021176951 A1 WO 2021176951A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheel
motor drive
outboard side
drive device
wheel bearing
Prior art date
Application number
PCT/JP2021/004352
Other languages
English (en)
Japanese (ja)
Inventor
真也 太向
四郎 田村
Original Assignee
Ntn株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ntn株式会社 filed Critical Ntn株式会社
Publication of WO2021176951A1 publication Critical patent/WO2021176951A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/12—Torque-transmitting axles
    • B60B35/16—Axle housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings

Definitions

  • the present invention relates to an in-wheel motor drive device.
  • the in-wheel motor drive device Since the in-wheel motor drive device is used with the entire device housed inside the wheel, its weight and size affect the unsprung weight of the vehicle and the size of the cabin space, so it is as light as possible. It is desired to be compact. On the other hand, the in-wheel motor drive device requires a large torque to drive the wheels. Therefore, in the in-wheel motor drive device, the rotation of the electric motor is decelerated between the electric motor that generates the driving force and the wheel bearing that rotatably supports the wheel, and the deceleration is output to the wheel bearing. It is common to install a machine.
  • the in-wheel motor drive device described in Patent Document 1 below employs a parallel shaft gear reducer composed of a plurality of gear shafts arranged in parallel with each other.
  • an inner ring rotation type that integrally rotates the output gear shaft of the reducer and the inner ring of the wheel bearing (see FIG. 4 of Patent Document 1 below) and deceleration.
  • An outer ring rotation type (see FIG. 1) that integrally rotates the output gear shaft of the machine and the outer ring of the wheel bearing is known.
  • the in-wheel motor drive device 100 includes an electric motor 110, a parallel shaft gear reducer 120, and a wheel bearing 130, and the output gear shaft 121 of the parallel shaft gear reducer 120 and the wheel bearing 130.
  • the inner member 131 (hub wheel 132 and inner ring 133) rotates integrally.
  • the in-board side end portion (right end in the drawing) of the hub wheel 132 of the wheel bearing 130 is located on the inner circumference of the bearing 122 on the outboard side (left side in the drawing) that supports the output gear shaft 121. ) Is included.
  • the bearing 122 of the parallel shaft gear reducer 120 and the inner member 131 of the wheel bearing 130 are arranged in the overlapping axial region in this way, the axial dimension of the in-wheel motor drive device 100 is shortened. The amount of protrusion of the in-wheel motor drive device 100 from the wheel to the in-board side can be suppressed.
  • the bearings that support the gear shafts particularly the bearings 122 and 123 that support the output gear shafts 121
  • the diameter of the outboard side bearing 122 that supports the output gear shaft 121 is increased to increase the load capacity, in order to avoid interference with the bearing 125 that supports the intermediate gear shaft 124 that meshes with the output gear shaft 121.
  • the radial dimension of the in-wheel motor drive device becomes large, it is necessary to drastically change the design of the parts around the in-wheel motor drive device, such as increasing the diameter of the wheel and modifying the suspension.
  • the inner diameter of the bearing 122 becomes smaller as shown in FIG. It becomes impossible to insert a part of the inner member 131 of the wheel bearing 130 into the inner circumference.
  • the inner member 131 of the wheel bearing 130 has to be arranged on the outboard side of the bearing 122 of the parallel shaft gear reducer 120, the axial dimension of the in-wheel motor drive device becomes large. When such an in-wheel motor drive device is attached to the wheel, the in-wheel motor drive device projects greatly from the wheel toward the inboard side, which may interfere with the vehicle body.
  • the present invention avoids interference between the in-wheel motor drive device and the vehicle body without requiring a significant design change of peripheral parts even when the axial dimension of the in-wheel motor drive device increases.
  • the purpose is.
  • the present invention comprises an electric motor unit that generates a driving force, a wheel bearing unit that rotatably supports wheels, and a wheel bearing unit that decelerates the rotation of the electric motor unit.
  • the wheel bearing portion has an inner member having a double row of raceway surfaces formed on the outer circumference and a double row of raceway surfaces formed on the inner circumference. From a plurality of rolling elements interposed between the outer member having the wheel mounting surface on which the wheel is mounted and the raceway surface on the outboard side of the inner member and the raceway surface on the outboard side of the outer member.
  • the rolling element on the inboard side composed of a plurality of rolling elements interposed between the rolling element row on the outboard side and the raceway surface on the inboard side of the inner member and the raceway surface on the inboard side of the outer member.
  • a parallel with a moving body train the speed reducer portion having an input gear shaft that rotates integrally with the rotation shaft of the electric motor portion, and an output gear shaft that rotates integrally with the outer member of the wheel bearing portion.
  • an in-wheel motor drive device including a shaft gear reducer, wherein the wheel mounting surface of the outer member is arranged on the inboard side of the rolling element row on the outboard side of the wheel bearing portion. do.
  • the in-wheel motor drive device of the present invention is a so-called outer ring rotation type in which the outer member of the wheel bearing portion and the output gear shaft of the reduction gear portion are integrally rotated, and is provided on the outer member.
  • the wheel mounting surface was arranged on the inboard side of the rolling element row on the outboard side.
  • the entire in-wheel motor drive device is arranged at a position shifted to the outboard side with respect to the wheel. Therefore, even when the axial dimension of the in-wheel motor drive device is increased, the amount of protrusion of the in-wheel motor drive device from the wheel to the inboard side can be suppressed.
  • the in-wheel motor drive device if the wheel mounting surface of the outer member is arranged on the inboard side of the rolling element row on the inboard side of the wheel bearing portion, the in-wheel motor from the wheel to the inboard side. The amount of protrusion of the drive device is further suppressed.
  • At least one of the outboard side and the inboard side rolling element rows of the wheel bearing portion is provided on the wheel. It can be placed in the axial region of the wheel disc.
  • the outer member of the wheel bearing portion is arranged on the inner circumference of the output gear shaft, the miniaturization in the axial direction can be achieved (see FIG. 1 of Patent Document 1). ..
  • the pitch circle diameter of the rolling element row of the wheel bearing portion is smaller than the inner diameter of the output gear shaft, the load capacity of the wheel bearing portion may be insufficient.
  • the outer member is arranged on the outboard side of the plurality of bearings that support the output gear shaft, the bearing portion for wheels is arranged regardless of the diameter of the output gear shaft. Since the pitch circle diameter of each rolling element row can be increased (for example, it is made larger than the inner diameter of the bearing that supports the output gear shaft), the load capacity of the wheel bearing portion can be secured.
  • the outer diameter of the wheel bearing portion can be suppressed because the reduction mechanism is not provided on the inner circumference of the wheel bearing portion.
  • the pitch circle diameter of each rolling element row of the wheel bearing portion (the diameter of the circle connecting the rolling element centers of each rolling element row) is set to the output gear provided on the output gear shaft of the speed reducer portion. Can be smaller than the pitch circle diameter of.
  • a shaft portion inserted into the inner circumference of the inner member and coupled to the output gear shaft of the speed reducer portion so as to be able to transmit torque, and the outboard side of the shaft portion.
  • a connecting member extending from the end portion to the outer diameter side and having a flange portion fixed to the outer member can be provided. By connecting the output gear shaft and the outer member with this connecting member, these can be rotated integrally.
  • the present invention even when the axial dimension of the in-wheel motor drive device is increased, the amount of protrusion from the wheel to the inboard side is suppressed, so that interference with the vehicle body can be avoided. ..
  • FIG. 1 It is a side view of the in-wheel motor drive device of FIG. 1 as seen from the outboard side. It is an enlarged view of FIG. It is sectional drawing of the in-wheel motor drive device which concerns on other embodiment.
  • FIG. 1 It is a schematic plan view of an electric vehicle equipped with an in-wheel motor drive device. It is a rear sectional view of the electric vehicle shown in FIG. It is sectional drawing of the in-wheel motor drive device which concerns on a comparative example. It is sectional drawing of the in-wheel motor drive device which concerns on other comparative examples.
  • FIGS. 5 and 6 As shown in FIG. 5, the electric vehicle 11 drives the chassis 12, the pair of front wheels 13 that function as steering wheels, the pair of rear wheels 14 that function as drive wheels, and the left and right rear wheels 14, respectively.
  • a wheel motor drive device 21 is provided.
  • the rear wheel 14 As shown in FIG. 6, the rear wheel 14 is housed inside the wheel housing 15 of the chassis 12 and is fixed to the lower part of the chassis 12 via the suspension device 16.
  • the suspension device 16 supports the rear wheel 14 by a suspension arm extending to the left and right, and absorbs the vibration received by the rear wheel 14 from the road surface by a strut including a coil spring and a shock absorber to suppress the vibration of the chassis 12.
  • the suspension device 16 is preferably an independent suspension type in which the left and right wheels are independently raised and lowered in order to improve the followability to the unevenness of the road surface and efficiently transmit the driving force of the rear wheels 14 to the road surface. The method may be adopted.
  • an in-wheel motor drive device 21 for rotationally driving each of the left and right rear wheels 14 is incorporated inside the left and right wheel housings 15, so that a motor, a drive shaft, a differential device, and the like are mounted on the chassis 12. There is no need to provide it. Therefore, the electric vehicle 11 has an advantage that a large cabin space can be secured and the rotations of the left and right rear wheels 14 can be controlled respectively.
  • the in-wheel motor drive device 21 includes not only a rear-wheel drive type electric vehicle 11 having a rear wheel 14 as a drive wheel, but also a front-wheel drive type electric vehicle 11 having a front wheel 13 as a drive wheel. It can also be applied to a four-wheel drive type electric vehicle in which both the front wheels 13 and the rear wheels 14 are drive wheels.
  • FIG. 1 shows a cross-sectional view of an in-wheel motor drive device 21 according to an embodiment of the present invention.
  • the in-wheel motor drive device 21 includes an electric motor unit A that generates a driving force for driving the wheels, a wheel bearing unit C that rotatably supports the drive wheels (wheels 14), and an electric motor unit A. It is provided with a speed reducer portion B that decelerates rotation and transmits the rotation to the wheel bearing portion C.
  • the electric motor portion A and the speed reducer portion B are housed in the casing 22, and the wheel bearing portion C is attached to the casing 22.
  • the outer side in the vehicle width direction and the inner side in the vehicle width direction are the outboard side and the inboard side, respectively. Called the side.
  • the left side of the paper surface is the outboard side
  • the right side of the paper surface is the inboard side.
  • the electric motor unit A includes a tubular stator 23 fixed to the casing 22, a rotor 24 arranged on the inner circumference of the stator 23 via a radial gap, and a motor rotation shaft 25 having a rotor 24 mounted on the outer circumference. It is provided with a radial gap type electric motor 26 having the above.
  • the motor rotating shaft 25 is rotatably supported with respect to the casing 22 by rolling bearings 40 and 41 arranged at two positions apart from each other in the axial direction, and at a rotation speed of about 10,000 times per minute. It is rotatable.
  • An axial gap type electric motor may be used for the electric motor unit A instead of the radial gap type.
  • the speed reducer unit B includes a parallel shaft gear reducer 30 in which an input gear shaft 35, an intermediate gear shaft 36, and an output gear shaft 37 are arranged in parallel with each other.
  • the input gear shaft 35 has an input gear 31
  • the intermediate gear shaft 36 has an input side intermediate gear 32 and an output side intermediate gear 33
  • the output gear shaft 37 has an output gear 34.
  • the parallel shaft gear reducer 30 reduces the rotation of the motor rotating shaft 25 in two stages and outputs the speed.
  • the input gear shaft 35 is arranged coaxially with the motor rotating shaft 25, and is integrally rotatably connected to the motor rotating shaft 25 by spline fitting.
  • the input gear shaft 35 is rotatably supported by rolling bearings 42 and 43
  • the intermediate gear shaft 36 is rotatably supported by rolling bearings 44 and 45
  • the output gear shaft 37 is rotatably supported by rolling bearings 46 and 47 with respect to the casing 22. ..
  • the input gear 31, both intermediate gears 32, 33, and the output gear 34 all use helical gears in which tooth streaks are formed in a spiral line shape (tooth streaks are inclined with respect to the axial direction). There is.
  • the meshing portion between the input gear 31 and the input side intermediate gear 32 and the meshing portion between the output side intermediate gear 33 and the output gear 34 are subjected to a load in the rotational direction or radial.
  • Axial loads act as well as loads. These loads are mainly supported by rolling bearings 42-47 that support the gear shafts 35-37. Therefore, for the rolling bearings 42 to 47, bearings capable of receiving both radial load and axial load, for example, deep groove ball bearings are used.
  • the gear shaft arrangement angle ⁇ shown in FIG. 2 (a straight line connecting the input gear shaft 35 and the rotation centers O1 and O2 of the intermediate gear shaft 36)
  • ⁇ 37 are arranged.
  • the wheel bearing portion C is composed of a so-called outer ring rotation type wheel bearing 50.
  • the wheel bearing 50 of the present embodiment includes an inner member 51 on the fixed side, an outer member 52 on the rotating side provided on the outer periphery of the inner member 51, and an outer member.
  • the inner member 51 has a main body 56 and an inner ring 57.
  • the main body 56 integrally has a cylindrical portion 56a and a flange portion 56b extending from the inboard side end portion of the cylindrical portion 56a to an outer diameter.
  • the inner ring 57 is fitted and fixed to the outer peripheral surface of the cylindrical portion 56a of the main body 56.
  • the flange portion 56b of the main body 56 is fixed to the casing 22 via the attachment 58. Double rows of raceway surfaces 59 and 60 are formed on the outer peripheral surface of the inner member 51.
  • the raceway surface 59 on the inboard side is formed on the outer peripheral surface of the cylindrical portion 56a of the main body 56, and the raceway surface 60 on the outboard side is formed on the outer peripheral surface of the inner ring 57.
  • a crimping portion formed by crimping and fixing the inner ring 57 in order to apply a preload to the wheel bearing 50 is formed.
  • the configuration of the inner member 51 is not limited to the above, and for example, the raceway surface 59 on the inboard side may be formed on another inner ring provided separately from the main body 56.
  • the outer member 52 includes an outer ring 61 and a hub ring 62. Double rows of raceway surfaces 63 and 64 are formed on the inner peripheral surface of the outer ring 61.
  • the hub ring 62 has a cylindrical portion 62a and a flange portion 62b extending from the cylindrical portion 62a to an outer diameter.
  • the outer ring 61 is fitted and fixed to the inner peripheral surface of the cylindrical portion 62a of the hub ring 62.
  • the brake disc 66 and the wheel 67 are attached to the flange portion 62b of the hub wheel 62 by bolts 65.
  • the side surface of the flange portion 62b of the hub wheel 62 on the outboard side is the wheel mounting surface S to which the brake disc 66 and the wheel 67 are mounted.
  • the configuration of the outer member 52 is not limited to the above, and for example, the outer ring 61 and the hub ring 62 may be integrally formed.
  • the connecting member 53 has a shaft portion 53a and a flange portion 53b extending from the outboard side end portion of the shaft portion 53a to the outer diameter side.
  • the shaft portion 53a is arranged coaxially with the output gear shaft 37 of the speed reducer portion B, and is inserted into the inner circumference of the inner member 51.
  • the inboard side end of the shaft portion 53a is connected to the output gear shaft 37 so as to be able to transmit torque by spline fitting.
  • the flange portion 53b is provided so as to wrap around the outboard side of the inner member 51, and its outer diameter end is fixed to the hub ring 62 of the outer member 52 by a bolt 68.
  • the configuration of the connecting member 53 is not limited to the above, and for example, the shaft portion 53a and the flange portion 53b may be formed separately.
  • the shaft portion 53a and the output gear shaft 37 may be integrally formed, or the hub wheel 62 and the flange portion 53b may be integrally formed.
  • a plurality of balls 54 are arranged between the raceway surface 59 on the inboard side of the inner member 51 and the raceway surface 63 on the inboard side of the outer member 52, and the plurality of balls 54 are provided on the inboard side.
  • the rolling element row L1 is formed.
  • a plurality of balls 55 are arranged between the raceway surface 60 on the outboard side of the inner member 51 and the raceway surface 64 on the outboard side of the outer member 52, and the outboard is formed by these plurality of balls 55.
  • a side rolling element row L2 is formed.
  • the internal space of the wheel bearing 50 is filled with grease as a lubricant.
  • Seal members 69 and 70 are provided at both ends of the space between the inner member 51 and the outer member 52 in the axial direction in order to prevent foreign matter from entering the inner space of the bearing and leakage of grease to the outside of the bearing. There is.
  • the wheel mounting surface S (the side surface of the flange portion 62b of the hub wheel 62 on the outboard side) provided on the outer member 52 of the wheel bearing portion C is at least an outboard. It is arranged on the inboard side of the rolling element row L2 on the side, and in the illustrated example, it is arranged on the inboard side of the rolling element row L1 on the inboard side.
  • the wheel mounting surface S' provided on the hub wheel 132 of the wheel bearing 130 is the rolling element row L2 on the outboard side. It is located on the outboard side rather than'.
  • the wheel mounting surface S is arranged on the inboard side of the comparative product, the wheel mounting surface S is located on the outboard side of the comparative product when mounted on the wheel 67. It is installed at the shifted position. As a result, the amount of protrusion Q (see FIG. 1) of the in-wheel motor drive device 21 from the wheel 67 to the inboard side is suppressed.
  • the bearings 46 and 47 that support the output gear shaft 37 of the speed reducer portion B have relatively large diameter balls (for example, the ball 54 of the wheel bearing portion C). It has a ball with a diameter larger than 55).
  • the outer member 52 of the wheel bearing portion C must be arranged on the outboard side of the bearing 47. Therefore, in the in-wheel motor drive device 21, the axial dimension of the protruding portion P (see FIG. 1) protruding from the casing 22 to the outboard side becomes large, but the wheel mounting surface S is set to the inboard side as described above.
  • most of the wheel bearing portion C is the axial region X of the wheel disc 67a of the wheel 67 (see FIG. 1). Is placed in. Specifically, at least one of the rolling element rows L1 and L2 of the wheel bearing portion C is arranged in the axial region X of the wheel disc 67a. In the illustrated example, the entire rolling element row L2 on the outboard side and a part of the rolling element row L1 on the inboard side are arranged in the axial region X of the wheel disc 67a.
  • the rolling element row L2 on the outboard side is arranged in the axial region X of the wheel disc 67a, or the entire rolling element rows L1 and L2 are arranged in the axial direction region X of the wheel disc 67a. You may.
  • the outer member 52 of the wheel bearing 50 on the outboard side of the bearing 47 on the outboard side that supports the output gear shaft 37 of the parallel shaft gear reducer 30, the output is obtained.
  • the size (diameter) of the wheel bearing 50 can be set regardless of the diameter of the gear shaft 37.
  • the pitch circle diameter D1 of the rolling element rows L1 and L2 of the wheel bearing 50 is larger than the inner diameter D2 of the bearing 47 on the outboard side that supports the output gear shaft 37. ing.
  • the pitch circle diameter D1 of each rolling element row L1 and L2 of the wheel bearing 50 can be made smaller than the pitch circle diameter D3 of the output gear 34 provided on the output gear shaft 37.
  • the overall operation mode of the in-wheel motor drive device 21 having the above configuration will be briefly described.
  • the electric motor unit A when an alternating current is supplied to the stator 23 of the electric motor 26, the rotor 24 and the motor rotating shaft 25 are integrally rotated by the electromagnetic force generated by the alternating current.
  • the rotation of the motor rotating shaft 25 is decelerated by the parallel shaft gear reducer 30 of the speed reducer unit B and then transmitted to the wheel bearing 50, whereby the outer member 52 (outer ring 61 and hub wheel) of the wheel bearing 50 is transmitted.
  • the brake disc 66 and the wheel 14 (wheel 67) rotate integrally.
  • the in-wheel motor drive device 21 has a lubrication mechanism for supplying lubricating oil to each part of the electric motor part A and the speed reducer part B. Then, while the in-wheel motor drive device 21 is being driven, each part of the electric motor part A is cooled by the lubricating oil supplied from the lubrication mechanism, and each part of the speed reducer part B is lubricated and cooled.
  • FIG. 4 shows an example in which the present invention is applied to an in-wheel motor drive device 21 that employs a one-stage reduction type (two-axis type) parallel shaft gear reduction gear 30.
  • the intermediate gear shaft 36 of the parallel shaft gear reducer 30 is omitted, and the input gear 31 of the input gear shaft 35 and the output gear 34 of the output gear shaft 37 are directly meshed with each other.
  • an in-wheel motor drive device (not shown) that employs a parallel shaft gear reducer with three or more stages in which two or more intermediate gear shafts 36 are arranged between the input gear shaft 35 and the output gear shaft 37.
  • the present invention can also be applied to.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un dispositif d'entraînement de moteur-roue 21 comprenant une partie moteur électrique A, une partie roulement de roue C et une partie décélérateur B. La partie roulement de roue C comprend : un élément interne 51; un élément externe 52 ayant une surface de fixation de roue S sur laquelle une roue 67 est fixée; et des rangées d'éléments de roulement L1, L2 composées d'une pluralité de billes 54, 55 interposées entre l'élément interne 51 et l'élément externe 52. La surface de fixation de roue S de l'élément externe 52 est disposée plus près du côté intérieur que la rangée d'éléments de roulement L2 sur le côté extérieur de la partie roulement de roue C.
PCT/JP2021/004352 2020-03-04 2021-02-05 Dispositif d'entraînement de moteur-roue WO2021176951A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-036683 2020-03-04
JP2020036683A JP2021138248A (ja) 2020-03-04 2020-03-04 インホイールモータ駆動装置

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WO2021176951A1 true WO2021176951A1 (fr) 2021-09-10

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0211419A (ja) * 1988-06-29 1990-01-16 Aisin Aw Co Ltd 減速機付モータ駆動装置及び電動車両
JP2007221947A (ja) * 2006-02-17 2007-08-30 Honda Motor Co Ltd 電動モータ
JP2007331476A (ja) * 2006-06-13 2007-12-27 Toyota Motor Corp 車輪駆動装置
JP2016111753A (ja) * 2014-12-03 2016-06-20 日産自動車株式会社 車両用電動駆動装置
JP2018053927A (ja) * 2016-09-26 2018-04-05 Ntn株式会社 インホイールモータ駆動装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0211419A (ja) * 1988-06-29 1990-01-16 Aisin Aw Co Ltd 減速機付モータ駆動装置及び電動車両
JP2007221947A (ja) * 2006-02-17 2007-08-30 Honda Motor Co Ltd 電動モータ
JP2007331476A (ja) * 2006-06-13 2007-12-27 Toyota Motor Corp 車輪駆動装置
JP2016111753A (ja) * 2014-12-03 2016-06-20 日産自動車株式会社 車両用電動駆動装置
JP2018053927A (ja) * 2016-09-26 2018-04-05 Ntn株式会社 インホイールモータ駆動装置

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