WO2021201102A1 - Dispositif d'entraînement électrique pour véhicule - Google Patents

Dispositif d'entraînement électrique pour véhicule Download PDF

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Publication number
WO2021201102A1
WO2021201102A1 PCT/JP2021/013841 JP2021013841W WO2021201102A1 WO 2021201102 A1 WO2021201102 A1 WO 2021201102A1 JP 2021013841 W JP2021013841 W JP 2021013841W WO 2021201102 A1 WO2021201102 A1 WO 2021201102A1
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WO
WIPO (PCT)
Prior art keywords
motor
pair
vehicle
transmission
shaft
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Application number
PCT/JP2021/013841
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English (en)
Japanese (ja)
Inventor
吉見拓也
齊藤大輔
Original Assignee
アイシン・エィ・ダブリュ株式会社
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Application filed by アイシン・エィ・ダブリュ株式会社 filed Critical アイシン・エィ・ダブリュ株式会社
Publication of WO2021201102A1 publication Critical patent/WO2021201102A1/fr

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    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing

Definitions

  • the present invention relates to an electric drive device for a vehicle.
  • Patent Document 1 includes a motor, a transmission gear mechanism for decelerating, a differential gear mechanism, a drive shaft, and an axle case, and is coupled to a rudder frame of the vehicle via a suspension device.
  • Electric drive device for use is disclosed.
  • the motor shaft of the motor and the shaft of the transmission gear mechanism are arranged along the width direction of the vehicle.
  • Patent Document 2 discloses an electric drive device for a vehicle in which a motor is attached to the rear side of the vehicle with respect to the axle case and a transmission gear mechanism is attached to the front side of the vehicle with respect to the axle case. There is.
  • the motor shaft of the motor and the shaft of the transmission gear mechanism are arranged along the front-rear direction of the vehicle.
  • the motor shaft of the motor and the shaft of the transmission gear mechanism are arranged along the width direction of the vehicle, and the motor and the transmission gear mechanism are the width of the vehicle. Since they are arranged side by side in the direction, the size of the motor and the transmission gear mechanism portion in the vehicle width direction becomes large. Therefore, in order to arrange the motor and the transmission gear mechanism so as not to interfere with the pair of side rails of the ladder frame during the operation of the suspension device, it is necessary to set a wide distance between the pair of side rails in the vehicle width direction. It should be noted that the positional relationship of the electric drive device for vehicles disclosed in Patent Document 2 with respect to the frame of the vehicle body is not shown.
  • the characteristic configuration of the electric drive device for a vehicle is an axle case coupled to a vehicle body frame included in the vehicle via a suspension device, a motor having a motor shaft, and an input in which power is transmitted from the motor shaft.
  • a transmission gear mechanism having a shaft, an output shaft, a plurality of gears that are interposed between the input shaft and the output shaft and transmit the power, and a pair of drives that transmit the power transmitted from the output shaft.
  • a differential gear mechanism that distributes and transmits to the shaft is provided, and the axle case accommodates the differential gear mechanism and at least a part of the pair of drive shafts, and supports the motor and the transmission gear mechanism.
  • the vehicle body frame is provided with a pair of side rails that are arranged at intervals in the width direction of the vehicle and extend in the front-rear direction of the vehicle, and the motor shaft, the input shaft, and the output shaft are the vehicle.
  • the motor and the transmission gear mechanism are arranged between the pair of side rails in the vertical direction, so as to extend in the first direction along the front-rear direction in the vertical direction. There is a point.
  • the vehicle 1000 includes an electric drive device 1 for a vehicle, wheels 18L and 18R, drive shafts 15L and 15R driven and connected to the wheels 18L and 18R, and a vehicle body frame 1001.
  • a suspension device 1002 is provided.
  • the vehicle 1000 also includes a body 1008 (see FIGS. 3 and 4) that surrounds a containment chamber for accommodating occupants and luggage.
  • the accommodation chamber includes a passenger compartment for accommodating occupants and a luggage compartment for accommodating luggage. The passenger compartment and the luggage compartment may be connected or separated.
  • the vehicle 1000 is, for example, a four-wheel drive vehicle for traveling on a rough road, an SUV (sport utility vehicle), a truck, a bus, or the like.
  • the vehicle 1000 is not limited to the above.
  • the front-rear direction of the vehicle 1000 is simply referred to as the front-rear direction X
  • the width direction of the vehicle 1000 is simply referred to as the width direction Y
  • the vertical direction of the vehicle 1000 is simply referred to as the up-down direction Z.
  • the front-rear direction X, the width direction Y, and the vertical direction Z are orthogonal to each other.
  • 1, 2, and 5 to 7 is the front side in the front-rear direction X
  • the right side in the figure is the rear side in the front-rear direction X
  • the right side facing the front side in the front-rear direction X is the right side in the width direction Y
  • the opposite side is the left side in the width direction Y.
  • the "driving connection” refers to a state in which two rotating elements are connected so as to be able to transmit a driving force, and a state in which the two rotating elements are connected so as to rotate integrally, or It is used as a concept including a state in which the two rotating elements are connected so as to be able to transmit a driving force via one or more transmission members.
  • Such transmission members include various members that transmit rotation at the same speed or at different speeds, and include, for example, shafts, gear mechanisms, belts, chains, and the like. Further, such a transmission member may include an engaging device that selectively transmits rotation and driving force, for example, a friction engaging device, a meshing type engaging device, and the like.
  • the body frame 1001 is configured to support the body 1008 from below.
  • the vehicle body frame 1001 has a structure that supports the body 1008 from below by being connected to the lower part of the body 1008.
  • the vehicle body frame 1001 is configured as, for example, a ladder frame.
  • the vehicle body frame 1001 has a pair of side rails 1003L and 1003R and a plurality of cross members 1004.
  • the pair of side rails 1003L and 1003R are arranged so as to be arranged at intervals in the width direction Y and extend in the front-rear direction X.
  • the side rails 1003L and 1003R are also referred to as side frames and side members.
  • the one arranged on the left side in the width direction Y is referred to as the left side rail 1003L
  • the one arranged on the right side in the width direction Y is referred to as the right side rail 1003R.
  • a plurality of cross members 1004 are lined up at intervals in the front-rear direction X, and a pair of side rails 1003L and 1003R are connected in the width direction Y.
  • each cross member 1004 is arranged so as to extend in the width direction Y.
  • Each of the plurality of cross members 1004 is hung on a pair of side rails 1003L and 1003R to connect the side rails 1003L and 1003R.
  • the plurality of cross members 1004 are a first cross member 1004A arranged on the front side in the front-rear direction X with respect to the vehicle electric drive device 1, and a first cross member 1004A arranged on the rear side in the front-rear direction X with respect to the vehicle electric drive device 1. Includes 2 crossmembers 1004B and. These first cross member 1004A and second cross member 1004B correspond to two cross members 1004 adjacent to each other in the front-rear direction X.
  • the suspension device 1002 suspends the vehicle electric drive device 1 on the vehicle body frame 1001. That is, the suspension device 1002 couples the vehicle electric drive device 1 to the vehicle body frame 1001.
  • the axle case 10 constituting the electric drive device 1 for a vehicle is coupled to a pair of side rails 1003L and 1003R via a suspension device 1002.
  • the suspension device 1002 has a pair of laminated leaf springs 1005L and 1005R and a pair of shock absorbers 1006L and 1006R.
  • the laminated leaf springs 1005L and 1005R are composed of a plurality of laminated leaf springs.
  • the laminated leaf springs 1005L and 1005R are also referred to as leaf springs.
  • Each of the pair of laminated leaf springs 1005L and 1005R is formed so as to extend along the front-rear direction X.
  • the one arranged on the left side in the width direction Y is the left side laminated leaf spring 1005L
  • the one arranged on the right side in the width direction Y is the right side laminated plate. It is called a spring 1005R.
  • the lap leaf springs 1005L and 1005R are examples of spring devices included in the suspension device 1002.
  • fixed portions 1005La and 1005Ra fixed to the vehicle body frame 1001 are provided at both ends of the laminated leaf springs 1005L and 1005R in the front-rear direction X, respectively.
  • connecting portions 1005Lb and 1005Rb connected to the axle case 10 are provided between the pair of fixing portions 1005La and 1005Ra X in the front-rear direction X of the laminated leaf springs 1005L and 1005R.
  • both ends of the left side laminated leaf spring 1005L arranged on the left side in the width direction Y are supported by the left side rail 1003L.
  • left-side fixing portions 1005La fixed to the vehicle body frame 1001 are provided at both ends of the left-side laminated leaf spring 1005L in the front-rear direction X. Further, both ends of the right side laminated leaf spring 1005R arranged on the right side in the width direction Y are supported by the right side rail 1003R. More specifically, right-side fixing portions 1005Ra fixed to the vehicle body frame 1001 are provided at both ends of the right-side laminated leaf spring 1005R in the front-rear direction X. Then, the electric drive device 1 for a vehicle is coupled to each intermediate portion of the pair of laminated leaf springs 1005R and 1005L.
  • a left side connecting portion 1005Lb connected to the axle case 10 is provided between the pair of left side fixing portions 1005La in the left side laminated leaf spring 1005L in the front-rear direction X.
  • a right side connecting portion 1005Rb connected to the axle case 10 is provided between the pair of right side fixing portions 1005Ra in the right side laminated leaf spring 1005R in the front-rear direction X.
  • both ends of the pair of laminated leaf springs 1005R and 1005L are connected to the cross member 1004 (here, the first cross member 1004A and the second cross member 1004B), and the side rails are connected via the cross member 1004. It is supported by 1003L and 1003R. More specifically, one of the pair of cross members 1004 (here, the first cross member 1004A), one of the pair of left side fixing portions 1005La (here, the front left side fixing portion 1005La), and the pair of right side fixing portions 1005Ra. One (here, the right side fixing portion 1005Ra on the front side) is fixed.
  • each of the first cross member 1004A and the second cross member 1004B protrudes to the left side of the left side rail 1003L, and the left side fixing portion 1005La is fixed to the protruding portion.
  • Each of the first cross member 1004A and the second cross member 1004B protrudes to the right side of the right side rail 1003R, and the right side fixing portion 1005Ra is fixed to the protruding portion.
  • the left side connecting portion 1005Lb is provided at the central portion between the pair of left side fixing portions 1005La in the front-rear direction X.
  • the "central portion" between the pair of left side fixing portions 1005La in the front-rear direction X refers to a region in the front-rear direction X including the central position between the pair of left-side fixing portions 1005La in the front-rear direction X.
  • the central region of the pair of left side fixing portions 1005La in the left side laminated leaf spring 1005L divided into three equal parts in the front-rear direction X is referred to as the "central portion" between the pair of left side fixing portions 1005La in the front-rear direction X. can do.
  • the right side connecting portion 1005Rb is provided at the central portion between the pair of right side fixing portions 1005Ra in the front-rear direction X.
  • the "central portion" between the pair of right side fixing portions 1005Ra in the front-rear direction X refers to a region in the front-rear direction X including the central position between the pair of right-side fixing portions 1005Ra in the front-rear direction X.
  • the central region of the pair of right-side fixing portions 1005Ra in the right-side laminated leaf spring 1005R that is divided into three equal parts in the front-rear direction X is referred to as the "central portion" between the pair of right-side fixing portions 1005Ra in the front-rear direction X. can do.
  • each of the left side connecting portion 1005Lb and the right side connecting portion 1005Rb is fixed so as not to rotate relative to the axle case.
  • Such a configuration can be realized by using, for example, a bolt or the like.
  • the upper end of the left side shock absorber 1006L arranged on the left side in the width direction Y is supported by the left side rail 1003L via a support member (not shown).
  • the upper end of the right side shock absorber 1006R arranged on the right side in the width direction Y is supported by the right side rail 1003R via a support member (not shown).
  • a vehicle electric drive device 1 (here, an axle case 10) is coupled to the lower ends of each of the pair of shock absorbers 1006L and 1006R.
  • the shock absorbers 1006L and 1006R are, for example, oil type.
  • the shock absorbers 1006L and 1006R are examples of damping devices included in the suspension device 1002. The damping device is not limited to the above.
  • both of the pair of shock absorbers 1006L and 1006R are arranged between the pair of side rails 1003L and 1003R (between the width direction Y). Further, the pair of shock absorbers 1006L and 1006R are arranged so as to be spaced apart from each other in the width direction Y. Therefore, these pair of shock absorbers 1006L and 1006R correspond to the pair of inner arrangement portions 1007L and 1007R (see FIG. 1) of the suspension device 1002. In addition to the shock absorbers 1006L and 1006R, a portion of the suspension device 1002 arranged between the pair of side rails 1003L and 1003R (between the width directions Y) and spaced apart from each other in the width direction Y.
  • the portion also corresponds to a pair of inner arrangement portions 1007L and 1007R.
  • Examples of such a portion include a connecting mechanism between the shock absorbers 1006L and 1006R and the laminated leaf springs 1005L and 1005R and the electric drive device 1 for a vehicle, and a support mechanism for the shock absorbers 1006L and 1006R and the laminated leaf springs 1005L and 1005R. Can be included.
  • the vehicle electric drive device 1 rotationally drives the wheels 18L and 18R via the drive shafts 15L and 15R.
  • the electric drive device 1 for a vehicle is also referred to as an electric axle device.
  • each of the pair of drive shafts 15L and 15R is drive-connected to the rear wheels of the vehicle 1000. That is, the wheels 18L and 18R in this embodiment are the rear wheels of the vehicle 1000.
  • the electric drive device 1 for a vehicle includes an axle case 10, a motor 11, a connection mechanism 12, a transmission 13, a differential gear mechanism 14, a parking lock gear 17, and a parking brake (Not shown) and.
  • the power output from the motor 11 is transmitted to the drive shafts 15L and 15R via the connection mechanism 12, the transmission 13, and the differential gear mechanism 14.
  • the axle case 10 is also referred to as a banjo.
  • the electric drive device 1 for a vehicle includes a drive unit 100 and a transmission unit 200.
  • the drive unit 100 includes a motor 11, a connection mechanism 12, and a drive housing 101.
  • the drive unit 100 is arranged on one side of the axle case 10 in the front-rear direction X.
  • the drive unit 100 is arranged on the front side of the axle case 10 in the front-rear direction X, and is detachably attached to the axle case 10. Therefore, the drive unit 100 extends from the axle case 10 to the front side in the front-rear direction X.
  • the drive unit 100 projects from the axle case 10 to the front side in the front-rear direction X. Therefore, the motor 11 is also arranged on the front side in the front-rear direction X with respect to the axle case 10.
  • the transmission unit 200 includes a transmission 13, a differential gear mechanism 14, a parking lock gear 17, a parking brake, and a transmission housing 201.
  • the transmission unit 200 is arranged on the other side of the axle case 10 in the front-rear direction X.
  • the transmission unit 200 is arranged on the rear side of the axle case 10 in the front-rear direction X, and is detachably attached to the axle case 10.
  • the transmission unit 200 extends from the axle case 10 to the rear side in the front-rear direction X.
  • the transmission unit 200 projects from the axle case 10 to the rear side in the front-rear direction X. Therefore, the transmission 13 (transmission gear mechanism) is also arranged on the rear side of the axle case 10 in the front-rear direction X.
  • the drive unit 100 has the motor 11 and is arranged on one side of the axle case 10 in the front-rear direction X.
  • the transmission unit 200 has a transmission 13 and is arranged on the other side of the axle case 10 in the front-rear direction X. That is, the motor 11 and the transmission 13 (transmission gear mechanism) are arranged on opposite sides of the axle case 10 in the front-rear direction X of the vehicle 1000.
  • the drive unit 100 and the transmission unit 200 are attached to the axle case 10 independently of each other.
  • the drive unit 100 and the transmission unit 200 are separately attached to the axle case 10. That is, the motor 11 and the transmission 13 are attached to the axle case 10 independently of each other.
  • the drive unit 100 and the transmission unit 200 are arranged so as to be aligned with the laminated leaf springs 1005L and 1005R in the width direction Y.
  • the drive unit 100 and the transmission unit 200 are arranged so as to overlap the laminated leaf springs 1005L and 1005R in the width direction along the width direction Y.
  • the drive unit 100 and the transmission unit 200 have substantially the same size in the width direction Y.
  • the transmission unit 200 is located between the pair of shock absorbers 1006L and 1006R (between the width direction Y). That is, in the present embodiment, shock absorbers 1006L and 1006R are provided on the rear side of the axle case 10 in the front-rear direction X.
  • "overlapping in a specific direction” means that a virtual straight line parallel to the line-of-sight direction is moved in each direction orthogonal to the virtual straight line. It means that there is a region where the virtual straight line intersects both of the two members.
  • the axle case 10 is a case of the electric drive device 1 for a vehicle, and houses a differential gear mechanism 14 and at least a part of a pair of drive shafts 15L and 15R. Further, the axle case 10 supports the motor 11 and the transmission 13.
  • the drive unit 100 and the transmission unit 200 are attached to the axle case 10, respectively, so that the motor 11 included in the drive unit 100 and the transmission 13 included in the transmission unit 200 are included. Is supported by the axle case 10.
  • the motor 11 and the transmission 13 are fixed to the axle case 10.
  • the axle case 10 is configured as a rigid axle case.
  • the axle case 10 is composed of a combination of a plurality of members. Specifically, the axle case 10 has a base member 91 and a pair of tubular members 93R and 93L.
  • the base member 91 is formed in a frame shape (endless shape).
  • the base member 91 has a cylindrical outer peripheral surface around the axis along the front-rear direction X and a first annular plate formed so as to extend radially inward from the front end portion of the outer peripheral surface. It has a shaped portion and a second annular plate-shaped portion formed so as to extend radially inward from the rear end portion of the outer peripheral surface.
  • the surface of the first annular plate-shaped portion facing the front side in the front-rear direction X is the first mating surface 91a
  • the surface of the second annular plate-shaped portion facing the rear side of the front-rear direction X is the second mating surface. It becomes 91b.
  • a storage chamber for accommodating the differential gear mechanism 14 is formed inside the base member 91. That is, the base member 91 is configured to accommodate at least a part of the differential gear mechanism 14. Further, the pair of tubular members 93R and 93L are arranged so as to extend from the base member 91 along the width direction Y in opposite directions.
  • the right cylindrical member 93R arranged on the right side in the width direction Y is arranged so as to extend from the base member 91 to the right side in the width direction Y, and is arranged on the left side in the width direction Y.
  • the 93L is arranged so as to extend from the base member 91 to the left side in the width direction Y.
  • the pair of tubular members 93R and 93L are integrally formed with the base member 91, or are formed of a member different from the base member 91 and fixed to the base member 91 by a binder such as a screw or a bolt, welding, or the like. ing.
  • a storage chamber for accommodating the drive shafts 15L and 15R is formed in each of the pair of tubular members 93R and 93L.
  • the pair of tubular members 93R and 93L are configured to accommodate at least a part of the drive shafts 15L and 15R, respectively.
  • the means for fixing the members of the axle case 10 is not limited to the above.
  • the axle case 10 is also referred to as a case or a rigid axle case.
  • the base member 91 has a pair of mating surfaces 91a and 91b.
  • the first mating surface 91a is an end surface of the base member 91 on the front side in the front-rear direction X, and faces the front side in the front-rear direction X.
  • the second mating surface 91b is an end surface of the base member 91 on the rear side in the front-rear direction X, and faces the rear side in the front-rear direction X.
  • the mating surfaces 91a and 91b are formed in a flat shape.
  • the vertical Z dimension L6 of the base member 91 is larger than the vertical Z dimension L7 of the tubular members 93R and 93L.
  • the base member 91 is arranged between the pair of side rails 1003L and 1003R (between the width direction Y).
  • the drive shafts 15L and 15R are arranged so as to extend in the width direction Y.
  • the pair of drive shafts 15L and 15R are arranged coaxially with each other at intervals in the width direction Y.
  • a differential gear mechanism 14 is arranged between the pair of drive shafts 15L and 15R in the width direction Y. At least a part of each of the pair of drive shafts 15L and 15R is housed in the axle case 10.
  • the right side portion of the left drive shaft 15L arranged on the left side in the width direction Y with respect to the differential gear mechanism 14 and the right side portion in the width direction Y with respect to the differential gear mechanism 14 and the width direction Y with respect to the differential gear mechanism 14.
  • the left side portion in the width direction Y of the right side drive shaft 15R arranged on the right side of the axle case 10 is housed in each of the pair of tubular members 93R and 93L of the axle case 10. Further, the pair of drive shafts 15L and 15R are supported by the axle case 10 via bearings so as to be rotatable around the first central axis Ax1.
  • the first central axis Ax1 is arranged along the width direction Y.
  • the drive housing 101 of the drive unit 100 includes a base member 102 and a motor case 11a.
  • the base member 102 has a mating surface 102a.
  • the mating surface 102a is an end surface on the rear side in the front-rear direction X, and faces the rear side in the front-rear direction X.
  • the mating surface 102a of the base member 102 is overlapped with the first mating surface 91a of the axle case 10.
  • the base member 102 is arranged on the front side in the front-rear direction X with respect to the base member 91 of the axle case 10, and is fixed to the base member 91 by a connector such as a screw or a bolt in a state of being overlapped with the base member 91.
  • the base member 102 is formed with a part of the accommodating chamber for accommodating the connection mechanism 12 and a part of the accommodating chamber for accommodating the differential gear mechanism 14 and the like.
  • the motor case 11a is arranged on the front side of the base member 102 in the front-rear direction X, and is fixed to the base member 102 by a binder such as a screw or a bolt in a state of being overlapped with the base member 102.
  • a storage chamber for accommodating the first gear 71 and the second gear 72 of the connection mechanism 12 is formed between the base member 102 and the cover member 11f of the motor case 11a.
  • the motor 11 has a stator 11d, a rotor 11c rotatably supported by the stator 11d, and a motor shaft 11b connected so as to rotate integrally with the rotor 11c.
  • the motor 11 further has a motor case 11a that houses the stator 11d and the rotor 11c.
  • the motor case 11a houses at least a part of the motor shaft 11b, the rotor 11c, and the stator 11d.
  • the motor case 11a has a concave main body 11e and a cover member 11f that covers the opening of the main body 11e.
  • the main body 11e is formed in a bottomed cylindrical shape.
  • the cover member 11f is provided with an opening 11g that penetrates the cover member 11f.
  • the cover member 11f is fixed to the main body 11e.
  • the cover member 11f is removable from the main body 11e.
  • the rotor 11c and the stator 11d are housed in a space surrounded by the main body 11e and the cover member 11f.
  • the motor case 11a is supported (fixed) to the axle case 10. Specifically, the motor case 11a is supported (fixed) to the axle case 10 via the base member 102. The motor case 11a is detachably attached to the base member 102 by screws or the like. That is, the motor 11 is detachably attached to the axle case 10.
  • the motor shaft 11b is arranged so as to extend in the first direction D1 along the front-rear direction X in the vertical direction view along the vertical direction Z of the vehicle 1000. Therefore, the motor shaft 11b is arranged parallel to the side rails 1003L and 1003R in the vertical direction.
  • the first direction D1 is a direction along the front-rear direction X even in the width direction view along the width direction Y. That is, the first direction D1 in the present embodiment coincides with the front-rear direction X.
  • the motor shaft 11b is rotatably supported by the motor case 11a around the second central axis Ax2.
  • the second central axis Ax2 is along the first direction D1, in this example, the front-rear direction X.
  • a part of the motor shaft 11b projects from the opening 11g to the outside of the motor case 11a, that is, to the rear side of the cover member 11f in the front-rear direction X. Further, the portion of the motor shaft 11b protruding from the cover member 11f is rotatably supported by two bearings B1 and B2.
  • the two bearings B1 and B2 are arranged at intervals in the first direction D1.
  • the two bearings B1 and B2 are supported by the cover member 11f and the base member 102, respectively. That is, the portion of the motor shaft 11b protruding from the cover member 11f is rotatably supported by the cover member 11f and the base member 102 via the two bearings B1 and B2.
  • the motor shaft 11b in this example is supported by the bearing B12 on the front side (left side in FIG. 5) of the rotor 11c in the front-rear direction X, and is behind the first gear 71 described later in the front-rear direction X.
  • the portion supported by the bearing B2 on the side (right side in FIG. 5) corresponds to the motor shaft 11b.
  • the dimension L1 of the first direction D1 of the motor shaft 11b is larger than the dimension L2 in the direction orthogonal to the first direction D1 of the motor 11 (that is, the radial direction of the motor 11). Therefore, in the electric drive device 1 for a vehicle, the arrangement area occupied by the motor 11 is larger than the dimension in the direction in which the dimension in the first direction D1 is orthogonal to the dimension in the first direction D1. This also applies to the drive unit 100. That is, the dimension of the drive unit 100 in the first direction D1 is larger than the dimension in the direction orthogonal to the first direction D1 of the drive unit 100 (that is, the radial direction).
  • the rotor 11c rotates integrally with the motor shaft 11b.
  • the stator 11d is arranged so as to surround the outer circumference of the rotor 11c and is fixed to the motor case 11a.
  • the motor 11 applies torque (power) around the second central axis Ax2 to the motor shaft 11b by being supplied with electric power. That is, the motor shaft 11b outputs the power of the motor 11. The power output from the motor shaft 11b is input to the transmission 13 via the connection mechanism 12.
  • the motor 11 also functions as a generator by being rotated by the power transmitted from the wheels 18L and 18R. That is, the motor 11 according to the present embodiment is a rotary electric machine that functions as both an electric machine and a generator, if necessary.
  • the connecting mechanism 12 has a first gear 71, a second gear 72, a transmission shaft 73, and a connecting shaft 82.
  • the connection mechanism 12 includes a reduction mechanism that decelerates the rotation input from the motor shaft 11b to the first gear 71 and outputs the rotation from the second gear 72.
  • the connection mechanism 12 may include, for example, a speed-increasing mechanism that accelerates the rotation input to the first gear 71 and outputs it from the second gear 72, and is a mechanism that neither decelerates nor accelerates. You may.
  • the connection mechanism 12 is also referred to as a coupling mechanism or a power transmission mechanism.
  • the transmission shaft 73 is separated from the motor shaft 11b of the motor 11 in a direction orthogonal to the first direction D1 and is arranged in parallel.
  • the transmission shaft 73 is arranged so as to extend in the first direction D1 and is rotatably supported by the drive housing 101 around the third central axis Ax3.
  • the third central axis Ax3 is arranged side by side at intervals in a direction parallel to the second central axis Ax2 and orthogonal to the first direction D1 with respect to the second central axis Ax2.
  • the transmission shaft 73 is rotatably supported by two bearings B3 and B4.
  • the two bearings B3 and B4 are arranged at intervals in the first direction D1.
  • the two bearings B3 and B4 are supported by the cover member 11f and the base member 102, respectively. That is, the transmission shaft 73 is rotatably supported by the cover member 11f and the base member 102 via two bearings B3 and B4.
  • the first gear 71 is fixed to the motor shaft 11b of the motor 11 and rotates integrally with the motor shaft 11b around the second central shaft Ax2. More specifically, the first gear 71 is fixed to a portion of the motor shaft 11b that protrudes rearward of the cover member 11f in the front-rear direction X.
  • the second gear 72 is fixed to the transmission shaft 73 and rotates integrally with the transmission shaft 73 around the third central axis Ax3.
  • the connecting shaft 82 is a shaft that is arranged coaxially with the input shaft 21 of the transmission 13 and that drives and connects the input shaft 21, the motor shaft, and 11b.
  • the connecting shaft 82 is arranged coaxially with the input shaft 21 and is connected so as to rotate integrally with the input shaft 21.
  • the connecting shaft 82 is integrally formed with the input shaft 21.
  • the connecting shaft 82 is arranged coaxially with the transmission shaft 73.
  • the connecting shaft 82 is arranged so as to extend in the first direction D1 and is rotatably supported around the third central axis Ax3.
  • the transmission shaft 73 and the connecting shaft 82 are connected to each other by a connecting portion 80. The configuration of the connecting portion 80 will be described later.
  • the transmission housing 201 of the transmission unit 200 has a differential housing 202 and a transmission housing 24 described later.
  • the transmission housing 24 is also referred to as a transmission case.
  • the differential housing 202 has a pair of mating surfaces 202a and 202b.
  • the first mating surface 202a is an end surface on the front side in the front-rear direction X, and faces the front side in the front-rear direction X.
  • the first mating surface 202a is overlapped with the mating surface 91b of the axle case 10.
  • the second mating surface 202b is an end surface on the rear side in the front-rear direction X, and faces the rear side in the front-rear direction X.
  • the second mating surface 202b is included in the partition wall 202c of the differential housing 202. These mating surfaces 202a and 202b are formed in a plane shape.
  • the differential housing 202 is arranged on the rear side of the base member 91 of the axle case 10 in the front-rear direction X, and is fixed to the base member 91 by a connector such as a screw or a bolt in a state of being overlapped with the base member 91. ..
  • the differential housing 202 is formed with a part of a storage chamber for accommodating the differential gear mechanism 14 and the like.
  • the transmission 13 is arranged on the side opposite to the motor 11 with respect to the first central axis Ax1 which is the rotation axis of the ring gear 52 and the drive shafts 15L and 15R. That is, the first central axis Ax1 is located between the motor 11 and the transmission 13. More specifically, the motor 11 and the transmission 13 are arranged in the first direction D1 (here, the front-rear direction X) with the first central axis Ax1 in between. Further, the motor 11 and the transmission 13 (transmission gear mechanism) are arranged on opposite sides to the axle case 10.
  • the transmission 13 is configured to shift the rotation transmitted from the side of the motor 11 and transmit it to the side of the differential gear mechanism 14.
  • the transmission 13 includes an input shaft 21 to which power is transmitted from the motor shaft 11b, an output shaft 22, and a plurality of gears intervening between the input shaft 21 and the output shaft 22 to transmit power.
  • the transmission 13 includes an input shaft 21, an output shaft 22, a plurality of gears 33, 34, 35, 36 for forming a plurality of gear stages 30, a gear connection mechanism 23, and a transmission. It has a housing 24 and.
  • the input shaft 21, the output shaft 22, the plurality of gears 33, 34, 35, 36, and the gear connecting mechanism 23 are housed in the transmission housing 24.
  • the transmission 13 switches between a deceleration stage that decelerates the rotation (power) input to the input shaft 21 and a speed increase stage that accelerates the rotation (power) input to the input shaft 21. It is a possible configuration.
  • the plurality of gear stages 30 of the transmission 13 may be only the reduction stage for decelerating or only the speed increasing stage for increasing the speed. That is, the transmission 13 may be configured to perform at least one of deceleration and acceleration.
  • the transmission 13 is an example of a transmission gear mechanism.
  • the transmission housing 24 has a mating surface 24a.
  • the mating surface 24a is an end surface on the front side in the front-rear direction X, and faces the front side in the front-rear direction X.
  • the mating surface 24a of the transmission housing 24 is overlapped with the mating surface 202b of the differential housing 202.
  • the transmission housing 24 is supported (fixed) to the axle case 10. Specifically, the transmission housing 24 is supported (fixed) to the axle case 10 via the differential housing 202.
  • the transmission housing 24 is detachably attached to the differential housing 202 by a binder such as a screw or a bolt. That is, the transmission 13 is detachably attached to the axle case 10.
  • the input shaft 21 and the output shaft 22 are arranged so as to extend in the first direction D1. Further, the input shaft 21 and the output shaft 22 are arranged side by side at intervals in the direction orthogonal to the first direction D1. In this example, the input shaft 21 and the output shaft 22 are arranged parallel to each other. Therefore, the input shaft 21 and the output shaft 22 are arranged in parallel with the side rails 1003L and 1003R in the vertical direction.
  • the input shaft 21 is rotatably supported by the transmission housing 24 around the third central axis Ax3 along the first direction D1.
  • the third central axis Ax3 is arranged along a direction orthogonal to the first central axis Ax1 in the vertical view.
  • the input shaft 21 is rotatably supported by two bearings B5 and B6.
  • the two bearings B5 and B6 are arranged at intervals in the first direction D1.
  • the bearing B5 is arranged on the front side of the bearing B6 in the front-rear direction X.
  • the two bearings B5 and B6 are supported by the transmission housing 201. That is, the input shaft 21 is rotatably supported by the transmission housing 201 via two bearings B5 and B6.
  • the bearing B5 is fitted in the opening 202d provided in the partition wall 202c of the differential housing 202 and supported by the differential housing 202.
  • the bearing B6 is supported by the transmission housing 24.
  • the input shaft 21 passes through the opening 202d and penetrates the partition wall 202c of the differential housing 202.
  • the input shaft 21 and the connecting shaft 82 are integrally formed. Therefore, in this example, among such integrally formed shaft members, the portion on the rear side of the axle case 10 in the front-rear direction X is designated as the input shaft 21, and the portion on the front side of the input shaft 21 in the front-rear direction X is used. Is the connecting shaft 82. That is, in this example, the portion from the portion on the rear side of the front-rear direction X to the portion supported by the bearing B6 from the surface on the rear side (right side in FIG. 5) of the axle case 10 corresponds to the input shaft 21. do.
  • the output shaft 22 is rotatably supported by the transmission housing 24 around the fourth central axis Ax4 along the first direction D1.
  • the fourth central axis Ax4 is arranged along a direction orthogonal to the first central axis Ax1 in the vertical view.
  • the fourth central axis Ax4 is arranged side by side with the third central axis Ax3 in a direction parallel to the third central axis Ax3 and orthogonal to the first direction D1.
  • the output shaft 22 is rotatably supported by two bearings B7 and B8.
  • the two bearings B7 and B8 are arranged at intervals in the first direction D1.
  • the bearing B7 is arranged on the front side in the front-rear direction X with respect to the bearing B8.
  • the bearing B7 is the one of the two bearings B7 and B8 that is closer to the differential gear mechanism 14.
  • the two bearings B7 and B8 are supported by the transmission housing 201. That is, the output shaft 22 is rotatably supported by the transmission housing 201 via two bearings B7 and B8. More specifically, the bearing B7 is fitted in the opening 202e provided in the partition wall 202c of the differential housing 202 and supported by the differential housing 202. Further, the bearing B7 is composed of a combination of two bearings B7a and B7b.
  • the bearing B8 is supported by the transmission housing 24.
  • the output shaft 22 passes through the opening 202e and penetrates the partition wall 202c of the differential housing 202.
  • the opening 202d and the opening 202e are separated from each other in a direction orthogonal to the first direction D1. Further, the opening 202d and the opening 202e and the opening 11g are separated from each other in both the directions orthogonal to the first direction D1 and the first direction D1.
  • the central axes Ax1 to Ax4 are also referred to as rotation axes.
  • the power of the motor 11 is input to the input shaft 21 via the connection mechanism 12, and the input shaft 21 is rotated by the power.
  • Each of the plurality of gear stages 30 is a constantly meshing type gear stage, and is provided over the input shaft 21 and the output shaft 22.
  • the gear stage is also called a gear pair.
  • the gear ratio is also called the gear ratio.
  • the plurality of gear stages 30 include the first speed gear stage 31 and the second speed gear stage 32.
  • the first speed gear stage 31 and the second speed gear stage 32 are arranged at intervals in the first direction D1.
  • the gear ratio of the second speed gear stage 32 is relatively smaller than the gear ratio of the first speed gear stage 31.
  • the reduction mechanism 41 is composed of the first speed gear stage 31, the input shaft 21, and the output shaft 22.
  • the speed reduction mechanism 41 decelerates the rotation input to the input shaft 21 and outputs the rotation from the output shaft 22.
  • the speed increasing mechanism 42 is composed of the second speed gear stage 32, the input shaft 21 and the output shaft 22.
  • the speed-increasing mechanism 42 accelerates the rotation input to the input shaft 21 and outputs it from the output shaft 22.
  • the speed reduction mechanism 41 and the speed increase mechanism 42 are supported by the axle case 10 via the transmission housing 24 and the differential housing 202.
  • the first speed gear stage 31 is also referred to as a low gear
  • the second speed gear stage 32 is also referred to as a high gear.
  • the configuration of the plurality of gear stages 30 is not limited to the above.
  • both the first speed gear stage 31 and the second speed gear stage 32 may be speed reduction mechanisms, and both the first speed gear stage 31 and the second speed gear stage 32 are speed increase mechanisms. You may. Further, the number of gear stages 30 may be 3 or more.
  • the first speed gear stage 31 has a drive gear 33 and a driven gear 34 that mesh with each other
  • the second speed gear stage 32 has a drive gear 35 and a driven gear 36 that mesh with each other.
  • the drive gears 33, 35 and the driven gears 34, 36 are examples of a plurality of gears included in the transmission gear mechanism.
  • the drive gears 33 and 35 are fixed to the input shaft 21 and rotate integrally with the input shaft 21 around the third central axis Ax3.
  • the driven gears 34 and 36 are supported by the output shaft 22 via bearings so as to be rotatable relative to the output shaft 22, and rotate around the fourth central axis Ax4.
  • the driven gears 34 and 36 can rotate relative to the output shaft 22 when they are not connected to the output shaft 22 by the gear connecting mechanism 23. Further, the driven gears 34 and 36 are restricted from moving in the axial direction of the fourth central axis Ax4.
  • the output shaft 22 is provided with a final gear 38.
  • the final gear 38 is fixed to the output shaft 22 and rotates integrally with the output shaft 22 around the fourth central axis Ax4.
  • the front end (left side in FIG. 5) of the output shaft 22 in the front-rear direction X coincides with the front end of the final gear 38 in the front-rear direction X. That is, in this example, the rear end of the front-rear direction X in the portion of the final gear 38 protruding from the front end of the front-rear direction X to the rear side (right side in FIG. 5) of the front-rear direction X with respect to the bearing B8. Corresponds to the output shaft 22.
  • the arrangement area occupied by the transmission 13 is larger than the dimension in the direction in which the dimension in the first direction D1 is orthogonal to the dimension in the first direction D1.
  • This also applies to the transmission unit 200. That is, the dimension of the transmission unit 200 in the first direction D1 is larger than the dimension in the direction orthogonal to the first direction D1 of the transmission unit 200 (that is, the radial direction).
  • the gear connection mechanism 23 is provided between the driven gear 34 of the first speed gear stage 31 and the driven gear 36 of the second speed gear stage 32.
  • the gear connection mechanism 23 selects a connection state (coupled state) and a cutoff state (non-coupling state) between the output shaft 22 and the driven gear 34 of the first speed gear stage 31 and the driven gear 36 of the second speed gear stage 32. Switch to. That is, the gear connection mechanism 23 switches the transmission state of rotation between the output shaft 22 and the driven gears 34 and 36.
  • the gear connection mechanism 23 is also referred to as a switching mechanism or a selection mechanism.
  • the gear connection mechanism 23 has a hub 43 and a sleeve 44.
  • the hub 43 is coupled to the output shaft 22 and rotates integrally with the output shaft 22 around the fourth central axis Ax4.
  • the sleeve 44 is engaged with the hub 43 by spline engagement, rotates integrally with the hub 43 around the fourth central axis Ax4, and is axially oriented with respect to the hub 43 (that is, the first direction D1). It is possible to move to.
  • the sleeve 44 has a first coupling position that is coupled to the driven gear 34 of the first speed gear stage 31, a second coupling position that is coupled to the driven gear 36 of the second speed gear stage 32, a first coupling position, and a first coupling position. It is configured to be movable between the neutral position (FIG. 5) between the two coupling positions. By moving the sleeve 44 in the axial direction of the output shaft 22 by an actuator and a moving mechanism (not shown), the sleeve 44 is selectively arranged in one of the first coupling position, the second coupling position, and the neutral position. When the sleeve 44 is arranged at the first coupling position, the output shaft 22 and the driven gear 34 are integrally rotated.
  • the output shaft 22 and the driven gear 36 are in a state of being integrally rotated.
  • the drive gear 35 and the driven gear 36 of the second speed gear stage 32 from the motor shaft 11b of the motor 11, to the connection mechanism 12, the drive gear 35 and the driven gear 36 of the second speed gear stage 32, the output shaft 22, the final gear 38, the differential gear mechanism 14, and the drive shafts 15L and 15R.
  • a transmission path for the second speed rotation to reach is constructed.
  • the driven gears 34 and 36 can rotate (idle) relative to the output shaft 22.
  • the differential gear mechanism 14 distributes the rotation transmitted from the transmission 13 to the pair of drive shafts 15L and 15R.
  • the differential gear mechanism 14 distributes and transmits the power transmitted from the output shaft 22 to the pair of drive shafts 15L and 15R.
  • the differential gear mechanism 14 has a differential gear case 51, a ring gear 52, and a differential mechanism (not shown).
  • the differential gear case 51 is housed in the differential housing 202.
  • the differential gear case 51 is rotatably supported by the differential housing 202 via bearings B9 and B10 so as to be rotatable around the first central axis Ax1.
  • the ring gear 52 is fixed to the differential gear case 51 and rotates integrally with the differential gear case 51 around the first central axis Ax1. That is, the ring gear 52 is rotatably supported by the differential housing 202 via the bearing B7 around the first central axis Ax1. Further, the ring gear 52 meshes with the final gear 38, and power is transmitted from the final gear 38.
  • the final gear 38 and the ring gear 52 form a reduction gear ratio (so-called final reduction ratio).
  • the differential mechanism is housed in the differential gear case 51.
  • the differential mechanism has, for example, a pinion shaft, a pair of pinion gears, and a pair of side gears.
  • the pinion shaft extends in a direction orthogonal to the first central axis Ax1.
  • the pinion shaft is supported by the differential gear case 51.
  • the pinion gear is supported by the pinion shaft so as to be rotatable around the pinion shaft.
  • the pinion shaft and the pinion gear rotate around the first central shaft Ax1 integrally with the differential gear case 51.
  • the pair of side gears mesh with the pair of pinion gears in a state where they are connected to the ends of the drive shafts 15L and 15R so as to rotate integrally with each other.
  • the differential gear mechanism 14 having the above configuration, when the ring gear 52 rotates, the differential gear case 51 rotates integrally with the pinion shaft.
  • the pinion shaft revolves the pinion gear around the first central axis Ax1.
  • the side gear rotates around the first central axis Ax1, and the drive shafts 15L and 15R rotate.
  • the pinion gear rotates around the pinion shaft to absorb the differential rotation.
  • the transmission unit 200 having the above configuration is composed of a combination of a plurality of units. Specifically, the transmission unit 200 has a differential unit 203 and a gear unit 204.
  • the differential unit 203 has a differential gear mechanism 14 and a differential housing 202.
  • the gear unit 204 has a transmission 13 (including a transmission housing 24).
  • the gear unit 204 is detachably attached to the differential unit 203.
  • the transmission shaft 73 and the connecting shaft 82 are arranged coaxially and are connected to each other by the connecting portion 80.
  • the connecting shaft 82 and the input shaft 21 are arranged coaxially and are connected so as to rotate integrally.
  • the transmission shaft 73, the coupling portion 80, and the connecting shaft 82 are arranged so as to extend in the first direction D1 and form a through drive shaft 81 that transmits power between the motor 11 and the transmission 13.
  • the through drive shaft 81 is rotatable around the third central axis Ax3, is arranged so as to extend from the front side of the axle case 10 in the front-rear direction X to the rear side of the axle case 10 in the front-rear direction X, and is arranged so as to extend from the front side of the axle case 10 to the rear side of the front-rear direction X.
  • the power output from is transmitted.
  • the through drive shaft 81 is housed in the axle case 10 and is supported by the axle case 10 via bearings B3 to B6 so as to be rotatable around the third central axis Ax3.
  • the through drive shaft 81 is also referred to as a coupling shaft.
  • the transmission shaft 73 is also referred to as the first portion of the through drive shaft 81, and the connecting shaft 82 is also referred to as the second portion of the through drive shaft 81.
  • the through drive shaft 81 is arranged so as to overlap with any of the differential gear mechanism 14 and the pair of drive shafts 15L and 15R in the vertical direction.
  • the through drive shaft 81 is located at a position separated from the left drive shaft 15L (first central axis Ax1) in a direction orthogonal to the width direction Y, specifically, the vertical direction of the first central axis Ax1. On the upper side of Z, it is arranged so as to extend in the first direction D1. Therefore, in the vertical view, the through drive shaft 81 is arranged so as to overlap the left drive shaft 15L, in other words, to cross over.
  • the through drive shaft 81 may be arranged above the right drive shaft 15R or the differential gear mechanism 14, or may be arranged above the right drive shaft 15R, the left drive shaft 15L, or the differential gear mechanism 14. It may be arranged below.
  • the coupling portion 80 separately couples the transmission shaft 73 and the connecting shaft 82.
  • the coupling portion 80 is housed in the base member 102 of the drive housing 101.
  • the coupling portion 80 is located closer to the second gear 72 of the second gear 72 of the connection mechanism 12 and the drive gear 33 of the reduction mechanism 41 in the transmission 13.
  • the coupling portion 80 is arranged on the front side in the front-rear direction X with respect to the axle case 10.
  • the position of the connecting portion 80 is not limited to the above.
  • the connecting portion 80 connects the transmission shaft 73 and the connecting shaft 82 by spline engagement.
  • the coupling portion 80 has a male spline portion 80a provided on the transmission shaft 73 and a female spline portion 80b provided on the connecting shaft 82 and spline-engaged with the male spline portion 80a.
  • the transmission shaft 73 and the connecting shaft 82 can be separated from each other by separating the transmission shaft 73 and the connecting shaft 82 along the axial direction (first direction D1) of the third central axis Ax3.
  • the transmission shaft 73 and the connecting shaft 82 can be coupled to each other by bringing the transmission shaft 73 and the connecting shaft 82 close to each other along the axial direction of the third central axis Ax3.
  • the connecting shaft 82 may be provided with a male spline portion 80a, and the transmission shaft 73 may be provided with a female spline portion 80b. Further, the connecting portion 80 may separately connect the transmission shaft 73 and the connecting shaft 82 with a connecting tool such as a screw or a bolt.
  • the drive unit 100 has a bearing B11 that rotatably supports the coupling portion 80.
  • the bearing B11 supports the outer circumference of the female spline portion 80b provided on the connecting shaft 82.
  • the bearing B11 is supported by the base member 102 of the drive housing 101.
  • the bearing B11 is a bearing different from the bearings B3 to B6. In the illustrated example, the diameter of the bearing B11 is smaller than the diameter of the bearings B3 to B6.
  • the drive unit 100 has a drive housing 101 that houses the motor 11 and the transmission shaft 73, and the coupling portion 80 is housed in the drive housing 101.
  • the parking lock gear 17 and the parking brake are provided on the output shaft 22 of the transmission 13.
  • the position of the parking lock gear 17 is not limited to this, and may be provided on the input shaft 21 or the like.
  • the motor 11 and the transmission 13 are arranged on opposite sides to the axle case 10.
  • the motor 11 and the transmission 13 transmission gear mechanism
  • the motor 11 and the transmission 13 are arranged on opposite sides of the ring gear 52 and the first central shaft Ax1 which is the rotation axis of the drive shafts 15L and 15R. That is, the first central axis Ax1 is located between the motor 11 and the transmission 13. More specifically, the motor 11 and the transmission 13 are arranged in the front-rear direction X with the first central axis Ax1 in between.
  • the power output from the motor shaft 11b of the motor 11 is input to the input shaft 21 of the transmission 13 via the connection mechanism 12.
  • the power input to the transmission 13 is input to the ring gear 52 of the differential gear mechanism 14 via one of the plurality of gear stages 30 selected (first speed gear stage 31 or second speed gear stage 32).
  • NS The power input to the ring gear 52 is input to the drive shafts 15L and 15R via the differential mechanism.
  • the axle case 10 is coupled to the pair of side rails 1003L and 1003R of the vehicle body frame 1001 via the suspension device 1002.
  • the axle case 10 is coupled to the pair of stacked leaf springs 1005L, 1005R and the pair of shock absorbers 1006L, 1006R of the suspension device 1002 by a known coupling tool.
  • the suspension device 1002 is arranged between the pair of side rails 1003L and 1003R (between the width directions Y), and the pair of shock absorbers 1006L and 1006R arranged at intervals in the width direction Y. It has. Then, as shown in FIG. 1, in the vehicle electric drive device 1, the motor 11 and the transmission 13 (transmission gear mechanism) are arranged inside the pair of shock absorbers 1006L and 1006R in the width direction Y. There is. In the present embodiment, the transmission unit 200 including the motor 11 and the transmission unit 200 including the transmission 13 (transmission gear mechanism) are also arranged inside the pair of shock absorbers 1006L and 1006R in the width direction Y. There is.
  • the motor shaft 11b, the input shaft 21, and the output shaft 22 extend in the first direction D1 along the front-rear direction X in the vertical direction along the vertical direction Z. Have been placed. Therefore, it is easy to reduce the size of the motor 11 and the transmission 13 (an example of the transmission gear mechanism) in the width direction Y.
  • the motor 11 and the transmission 13 are arranged between the pair of side rails (here, the left side rail 1003L and the right side rail 1003R) in the vertical direction.
  • the motor 11 and the transmission 13 are in the front-rear direction X of two cross members (here, the first cross member 1004A and the second cross member 1004B) adjacent to each other in the front-rear direction X in the vertical direction. It is placed in between.
  • the motor 11 and the transmission 13 are surrounded by a pair of side rails 1003L and 1003R and two cross members 1004A and 1004B in the vertical direction. It is arranged so that it fits within the area.
  • the motor 11 and the transmission 13 can be arranged so as to avoid interference with the transmission 13 body frame 1001, specifically, the side rails 1003L and 1003R and the cross members 1004A and 1004B.
  • FIG. 6 and 7 show how the pair of laminated leaf springs 1005L and 1005R vibrate.
  • FIG. 6 shows an example of the first vibration mode of the pair of laminated leaf springs 1005L and 1005R.
  • FIG. 7 shows an example of the second vibration mode of the pair of laminated leaf springs 1005L and 1005R.
  • the left side leaf spring 1005L will be described among the pair of leaf springs 1005L and 1005R.
  • the left side leaf spring 1005L vibrates in a relatively large cycle (primary vibration mode).
  • primary vibration mode when the left side connecting portion 1005Lb is displaced below the reference position, the left side laminated leaf spring 1005L is deformed in a U shape.
  • the left side connecting portion 1005Lb is displaced above the reference position, the left side stacking leaf spring 1005L is deformed so as to approach a straight line (not shown).
  • the moment acting on the axle case 10 is also relatively small.
  • the amount of displacement due to vibration is emphasized more than it actually is.
  • the front side portion and the rear side portion of the left side laminated leaf spring 1005L in the front-rear direction X vibrate in different phases (secondary vibration mode).
  • the left side leaf spring 1005L is deformed so as to undulate in an S shape.
  • the axle case 10 connected to the left side connecting portion 1005Lb is in a state of repeatedly swinging around the first central axis Ax1 where the drive shafts 15L and 15R are located.
  • the weight balance of the electric drive device 1 for the vehicle is greatly deviated between the front side and the rear side in the front-rear direction X with respect to the swing axis of the axle case 10 (here, the first central axis Ax1).
  • the inclination of the axle case 10 tends to increase, and the moment acting on the axle case 10 also tends to increase.
  • the motor 11 and the transmission 13 are supported by the axle case 10 in a state where the axle case 10 is located between them in the front-rear direction X.
  • the weight balance of the axle case 10 in the front-rear direction X is biased with respect to the swing axis of the axle case 10 as compared with the case where the motor 11 and the transmission 13 are arranged on the same side of the axle case 10 in the front-rear direction X. It can be made smaller. Therefore, the moment acting on the axle case 10 can be suppressed to be small due to the weight of the motor 11 and the transmission 13, and the inclination of the axle case 10 during vibration can be suppressed to be small. By doing so, the vibration in the swing direction of the electric drive device 1 for vehicles can be suppressed to be small, so that the displacement amount, speed, and acceleration of each part of the electric drive device 1 for vehicles can be easily suppressed to be small. ing.
  • FIG. 8 is an exemplary plan view of a portion of the vehicle 1000 according to the second embodiment.
  • the drive unit 100 and the transmission unit 200 are arranged on opposite sides of the axle case 10. Further, the drive unit 100 and the transmission unit 200 have different sizes in the width direction Y from each other. In this example, the size of the transmission unit 200 in the width direction Y is smaller than the size of the drive unit 100 in the width direction Y. Further, the smaller of the drive unit 100 and the transmission unit 200 in the width direction Y, in this example, the transmission unit 200 is a pair of inner arrangement portions 1007L and 1007R of the suspension device 1002, specifically, a pair of shock absorbers 1006L. , 1006R are arranged between the width directions Y. Also in this embodiment, the axle case 10 is connected to the side rails 1003L and 1003R via the suspension device 1002.
  • the drive unit 100 when the drive unit 100 has a smaller size in the width direction Y among the drive unit 100 and the transmission unit 200, the drive unit 100 is a pair of inner arrangement portions 1007L, 1007R, specifically.
  • the vehicle electric drive device 1 is arranged so as to be arranged between the pair of shock absorbers 1006L and 1006R in the width direction Y.
  • a pair of inner arrangement portions 1007L and 1007R (a pair of shock absorbers 1006L, which are a part of the suspension device 1002). Even when the 1006R) is arranged, the size of the unit (drive unit 100 or transmission unit 200) arranged between the pair of inner arrangement portions 1007L and 1007R in the width direction Y is small. It can be suppressed. Therefore, in such a case, it is easy to arrange the drive unit 100 and the transmission unit 200 of the vehicle electric drive device 1 while avoiding interference with the suspension device 1002.
  • the motor 11 (drive unit 100) is arranged on the front side in the front-rear direction X with respect to the axle case 10, and the transmission 13 (transmission unit 200) is arranged with respect to the axle case 10.
  • An example of the arrangement on the rear side of the front-rear direction X is shown, but the present invention is not limited to this. That is, the motor 11 (drive unit 100) is arranged on the rear side of the axle case 10 in the front-rear direction X, and the transmission 13 (transmission unit 200) is arranged on the front side of the axle case 10 in the front-rear direction X. You may.
  • the first direction D1 may be inclined with respect to the front-rear direction X. That is, the first direction D1 may be a direction along the front-rear direction X in the vertical direction, and may be a direction along the direction inclined with respect to the front-rear direction X in the width direction.
  • the first direction D1 may be inclined in the downward direction of the vertical direction Z toward the rear side of the front-rear direction X, or may be inclined in the downward direction of the vertical direction Z toward the rear side of the front-rear direction X. It may be inclined in the upward direction. Further, the first direction D1 does not have to be strictly parallel to the front-rear direction X even in the vertical view, and if the direction is substantially along the front-rear direction X in the vertical view, the front-rear direction X in the vertical view. The direction may be inclined to some extent. FIG. 9 shows one such alternative embodiment.
  • the motor 11 is arranged on the front side of the front-rear direction X with respect to the transmission 13 (transmission gear mechanism), and the first direction D1 is on the lower side of the vertical direction Z as it goes to the rear side of the front-rear direction X. It is inclined in the direction toward. Further, in the illustrated example, the size of the motor 11 and the drive unit 100 in the vertical direction Z is smaller than the size of the transmission 13 (transmission gear mechanism) and the transmission unit 200 in the vertical direction Z. With such a configuration, it is easy to arrange the motor 11 and the transmission 13 (transmission gear mechanism) so as not to interfere with the vehicle body floor (not shown) fixed to the pair of side rails 1003L and 1003R.
  • the transmission gear mechanism may be a speed reducer or a speed increaser having a fixed gear ratio, that is, having only one gear.
  • the transmission gear mechanism may have a configuration in which the rotation speed of the input shaft 21 and the rotation speed of the output shaft 22 are the same, that is, a configuration in which deceleration and acceleration are not performed.
  • the transmission 13 as the transmission gear mechanism is composed of the parallel shaft gear mechanism
  • the transmission 13 may have a configuration using a planetary gear mechanism or a configuration using another known gear mechanism.
  • the configuration is not limited to the configuration in which the input shaft 21 and the output shaft 22 are arranged on different shafts, and the input shaft 21 and the output shaft 22 may be arranged coaxially.
  • the vehicle body frame 1001 is a ladder frame, but the present invention is not limited to this. If the vehicle body frame 1001 substantially includes a configuration corresponding to a pair of side rails extending in the front-rear direction X of the vehicle 1000, and a configuration corresponding to a plurality of cross members connecting these side rails in the width direction Y. , Other types of frames may be used.
  • the vehicle body frame 1001 may be a monocoque frame, an X-shaped frame, a truss frame, or the like.
  • the vehicle body frame 1001 is usually configured to support the body 1008 from below.
  • examples of the laminated leaf springs 1005L and 1005R are shown as the spring device included in the suspension device 1002, but the present invention is not limited thereto.
  • the spring device included in the suspension device 1002 may be a coil spring, an air spring, or the like.
  • the shock absorbers 1006L and 1006R are arranged behind the axle case 10 in the front-rear direction X, but the present invention is not limited to this.
  • the shock absorbers 1006L and 1006R may be arranged on the front side of the axle case 10 in the front-rear direction X, or may be arranged on both the front side and the rear side of the axle case 10 in the front-rear direction X.
  • the pair of left side fixing portions 1005La are fixed to the left end of the pair of cross members 1004, and the pair of right side fixing portions 1005Ra are fixed to the right end of the pair of cross members 1004.
  • a pair of fixing portions may be fixed to portions other than both ends of the pair of cross members 1004.
  • a pair of left side fixing portions 1005La may be fixed to the left side rail 1003L
  • a pair of right side fixing portions 1005Ra may be fixed to the right side rail 1003R.
  • the dimension L1 of the first direction D1 of the motor shaft 11b is larger than the dimension L2 in the direction orthogonal to the first direction D1 of the motor 11 (that is, the radial direction of the motor 11).
  • the dimension L1 of the first direction D1 of the motor shaft 11b may be smaller than the dimension L2 in the direction orthogonal to the first direction D1 of the motor 11 (that is, the radial direction of the motor 11).
  • both the dimension L3 of the first direction D1 of the input shaft 21 and the dimension L4 of the first direction D1 of the output shaft 22 are orthogonal to the first direction D1 of the transmission 13 (transmission gear mechanism).
  • the configuration larger than the dimension L5 in the direction that is, the radial direction of the transmission 13
  • the present invention is not limited to this.
  • At least one of the dimension L3 of the first direction D1 of the input shaft 21 and the dimension L4 of the first direction D1 of the output shaft 22 is orthogonal to the first direction D1 of the transmission 13 (transmission gear mechanism) (that is, the transmission 13). It may be smaller than the dimension L5 (in the radial direction of).
  • a configuration in which a plurality of body frames 1001 are arranged at intervals in the front-rear direction X and a pair of side rails 1003L and 1003R are connected in the width direction Y is provided as an example.
  • the vehicle body frame 1001 may be configured to include only one cross member 1004 or not to include the cross member 1004.
  • each of the pair of drive shafts 15L and 15R is driven and connected to the rear wheels of the vehicle 1000 has been described as an example, but the present invention is not limited thereto.
  • Each of the pair of drive shafts 15L and 15R may be drive-connected to the front wheels of the vehicle 1000.
  • the motor 11 is arranged on the rear side of the axle case 10 in the front-rear direction X, it is preferable because the motor 11 can be easily protected even when the vehicle 1000 collides with an obstacle in front. be.
  • the electric power drive device (1) for a vehicle is a motor (11b) having an axle case (10) coupled to a vehicle body frame (1001) included in the vehicle (1000) via a suspension device (1002) and a motor shaft (11b). 11), an input shaft (21) to which power is transmitted from the motor shaft (11b), an output shaft (22), and the input shaft (21) and the output shaft (22).
  • a transmission gear mechanism (13) having a plurality of gears (33, 34, 35, 36) for transmitting power, and a pair of drive shafts (15L, 15R) for transmitting the power transmitted from the output shaft (22).
  • the axle case (10) accommodates the differential gear mechanism (14) and at least a part of the pair of drive shafts (15L, 15R).
  • the motor (11) and the transmission gear mechanism (13) are supported, and the vehicle body frame (1001) is arranged at intervals in the width direction (Y) of the vehicle (1000).
  • a pair of side rails (1003L, 1003R) extending in the front-rear direction (X) of (1000) are provided, and the motor shaft (11b), the input shaft (21), and the output shaft (22) are the vehicle (1000).
  • ) Is arranged so as to extend in the first direction (D1) along the front-rear direction (X) in the vertical view along the vertical direction (Z), and the motor (11) and the transmission gear mechanism (13) are arranged. It is arranged between the pair of side rails (1003L, 1003R) in the vertical view.
  • the motor shaft (11b) of the motor (11) and the input shaft (21) and the output shaft (22) of the transmission gear mechanism (13) are along the vertical direction (Z) of the vehicle (1000). Since it is arranged so as to extend in the first direction (D1) along the front-rear direction (X) in the vertical direction, the size of the motor (11) and the transmission gear mechanism (13) in the width direction (Y) is reduced. Cheap. Therefore, according to this configuration, it is not necessary to widen the distance between the pair of side rails (1003L, 1003R), and the motor (11) and the transmission gear mechanism (13) of the electric drive device (1) for the vehicle can be replaced with the vehicle (1000). ), It is easy to arrange the vehicle body frame (1001) while avoiding interference with the side rails (1003L, 1003R).
  • the dimension (L1) of the motor shaft (11b) in the first direction (D1) is larger than the dimension (L2) of the motor (11) in the direction orthogonal to the first direction (D1).
  • the dimension (L3) of the input shaft (21) in the first direction (D1) and the dimension (L4) of the output shaft (22) in the first direction (D1) are the dimensions (L4) of the transmission gear mechanism (13). It is preferable that it is larger than the dimension (L5) in the direction orthogonal to the first direction (D1).
  • the arrangement area occupied by the motor (11) is larger in the dimension in the first direction (D1) than the dimension in the direction orthogonal to the first direction (D1).
  • the arrangement area occupied by the transmission gear mechanism (13) is larger than the dimension in the first direction (D1) in the direction orthogonal to the first direction (D1). Therefore, as described above, the motor shaft (11b), the input shaft (21), and the output shaft (22) are arranged so as to extend in the first direction (D1) along the front-rear direction (X) in the vertical direction. Therefore, it is easy to reduce the size of the motor (11) and the transmission gear mechanism (13) in the width direction (Y).
  • the vehicle body frame (1001) is a cross member (1004A, 1004B) in which a plurality of the vehicle body frames (1001) are arranged at intervals in the front-rear direction (X) and a pair of the side rails (1003L, 1003R) are connected in the width direction (Y).
  • the motor (11) and the transmission gear mechanism (13) are arranged in the front-rear direction (1004A, 1004B) of two cross members (1004A, 1004B) adjacent to each other in the front-rear direction (X) in the vertical direction. It is preferable that it is arranged between X).
  • the motor (11) and the transmission gear mechanism (13) of the electric drive device (1) for a vehicle are used as side rails (1003L, 1003R) and cross members (1003L, 1003R) in a vehicle body frame (1001) of the vehicle (1000). It is easy to arrange it while avoiding interference with 1004A and 1004B).
  • the motor (11) and the transmission gear mechanism (13) are arranged on opposite sides to the axle case (10).
  • the motor (11) supported by the axle case (10) and the transmission gear mechanism (13) are arranged on the same side with respect to the axle case (10), as compared with the case where the motor (11) is arranged on the same side. ) And the moment acting on the axle case (10) to support the weight of the transmission gear mechanism (13) can be kept small. Therefore, the strength required for the axle case (10) can be kept small.
  • the suspension device (1002) includes a lap leaf spring (1005L, 1005R), and the lap leaf spring (1005L, 1005R) extends along the front-rear direction (X) of the vehicle (1000).
  • Fixed portions (1005La, 1005Ra) fixed to the vehicle body frame (1001) are provided at both ends of the laminated leaf springs (1005L, 1005R) in the front-rear direction (X).
  • Connecting portions (1005Lb, 1005Rb) connected to the axle case (10) are provided between the front-rear direction (X) of the pair of fixing portions (1005La, 1005Ra) in the leaf springs (1005L, 1005R). It is preferable to have it.
  • the vehicle includes a body (1008) surrounding a storage chamber for accommodating occupants and luggage, and the vehicle body frame (1001) is configured to support the body (1008) from below. ..
  • the vehicle body frames (1001) that support the body (1008) from below are arranged at intervals in the width direction (Y) of the vehicle (1000) and are arranged in the front-rear direction (X) of the vehicle (1000). It is often configured to have a pair of side rails (1003L, 1003R) extending to.
  • the above configuration is particularly suitable for a vehicle (1000) including such a body frame (1001).
  • a drive unit (100) having the motor (11) and a transmission unit (200) having the transmission gear mechanism (13) are provided, and the drive unit (100) and the transmission unit (200) are provided.
  • the suspension device (1002) which is coupled to the side rails (1003L, 1003R), is a portion of the pair of side rails (1003L, 1003R) arranged between the width directions (Y) and the width direction.
  • (Y) is provided with a pair of damping devices (1006L, 1006R) arranged at intervals from each other, and the motor (11) and the transmission gear mechanism (13) are combined with the pair of damping devices (1006L, 1006R).
  • the smaller one of the drive unit (100) and the transmission unit (200) in the width direction (Y) is the pair of the damping devices, which are arranged inside the width direction (Y). It is preferable that it is arranged between (1006L, 1006R).
  • the damping device (1006L, 1006R) has a narrower spacing in the width direction (Y) than the spacing in the width direction (Y) of the pair of side rails (1003L, 1003R).
  • the motor (11) and the transmission gear mechanism (13) are arranged inside the device (1006L, 1006R) in the width direction (Y). Therefore, the motor (11) and the transmission gear mechanism (13) can be arranged while avoiding interference with the pair of damping devices (1006L, 1006R). Further, according to this configuration, even when a pair of damping devices (1006L, 1006R) which are a part of the suspension device (1002) are arranged between the pair of side rails (1003L, 1003R).
  • the size of the unit (drive unit (100) or transmission unit (200)) arranged between the pair of damping devices (1006L, 1006R) in the width direction (Y) can be suppressed to a small size. Therefore, in such a case, the drive unit (100) and the transmission unit (200) of the electric drive device (1) for the vehicle should be avoided from interfering with the suspension device (1002), particularly the damping device (1006L, 1006R). It is easy to arrange.
  • each of the pair of drive shafts (15L, 15R) is driven and connected to the rear wheels of the vehicle (1000), and the motor (11) is driven in the front-rear direction (X) with respect to the axle case (10).
  • axle case (10) is more than a pair of cylindrical members (93R, 93L) accommodating at least a part of the drive shafts (15L, 15R) and the tubular members (93R, 93L).
  • a base member (91) having a large dimension in the vertical direction (Z) and accommodating at least a part of the differential gear mechanism (14) is provided, and the base member (91) is a pair of the side rails (1003L, It is preferable that it is arranged between 1003R).
  • the base member (91) having a larger vertical (Z) dimension than the tubular member (93R, 93L) is arranged between the pair of the side rails (1003L, 1003R), so that the axle While avoiding the case (10) from interfering with the side rails (1003L, 1003R), it is easy to arrange the axle case (10) close to the side rails (1003L, 1003R) in the vertical direction (Z). Therefore, it is easy to secure a large minimum ground clearance for the electric drive device (1) for a vehicle.
  • the motor (11) is arranged on the front side in the front-rear direction (X) with respect to the transmission gear mechanism (13), and the first direction (D1) faces the rear side in the front-rear direction (X). Therefore, it is preferable that the vehicle is inclined downward in the vertical direction (Z).
  • the vehicle electric drive device (1) includes a drive unit (100) having the motor (11) and a transmission unit (200) having the transmission gear mechanism (13), and the axle case. (10) is coupled to the side rails (1003L, 1003R) via the suspension device (1002), and the drive unit (100) and the transmission unit (200) are included in the suspension device (1002). It is preferable that the spring device (1005L, 1005R) and the spring device (1005L, 1005R) are arranged so as to overlap each other in the width direction along the width direction (Y).
  • the drive unit (100) and the transmission unit (200) and the transmission unit (200) are compared with the case where the drive unit (100) and the transmission unit (200) are arranged below the spring device (1005L, 1005R). It is easy to secure a large distance from the road surface. This makes it easier to secure a large minimum ground clearance for the electric drive device (1) for vehicles.
  • the input shaft (21) and the transmission gear mechanism (13) of the transmission gear mechanism (13) and the transmission gear mechanism (13) are arranged.
  • the output shafts (22) are arranged side by side at intervals in a direction orthogonal to the first direction (D1), are arranged coaxially with the input shaft (21), and are arranged with the input shaft (21).
  • a through drive shaft (81) for driving and connecting the motor shaft (11b) is further provided, and the through drive shaft (81) is any of the differential gear mechanism (14) and the pair of the drive shafts (15L, 15R). It is preferable that the shafts are arranged so as to overlap each other in the vertical direction.
  • the dimension of the transmission gear mechanism (13) in the first direction (D1) can be suppressed to be smaller than that of the configuration in which the transmission gear mechanism (13) is arranged side by side in one direction (D1).
  • the motor (11) and the transmission gear mechanism (13) arranged on opposite sides to the axle case (10) are appropriately driven and connected via the through drive shaft (81). can do.
  • the through drive shaft (81) is arranged coaxially with the input shaft (21), such a drive connection structure can be realized with a small number of axes.
  • This configuration is particularly suitable when the transmission gear mechanism (13) is configured by using the parallel shaft gear mechanism.
  • the connecting portion (1005Lb, 1005Rb) is a pair of the above. It is preferable that the fixed portion (1005La, 1005Ra) is provided at the central portion between the front-rear direction (X).
  • the connecting portion (1005Lb, 1005Rb) is fixed to the axle case (10) so as not to rotate relative to the axle case (10).
  • the reaction force in the direction of suppressing the rotation of the electric drive device (1) for the vehicle is applied. It can be easily generated in the laminated leaf springs (1005L, 1005R). Therefore, the rotation of the electric drive device (1) for a vehicle can be effectively suppressed.
  • the vehicle body frame (1001) includes a pair of cross members (1004) connecting the pair of side rails (1003L, 1003R) in the width direction (Y), the pair of cross members (1004).
  • the pair of cross members (1004) When one of the pair of the fixing portions (1005La, 1005Ra) is fixed to one of them, and the other of the pair of the fixing portions (1005La, 1005Ra) is fixed to the other of the pair of the cross members (1004). Suitable.
  • a pair of side rails (1003L, 1003R) and a pair of cross members (1004) are connected so as to intersect each other to form a vehicle body frame (1001). This makes it easy to secure the rigidity of the vehicle body frame (1001). Since the fixed portions (1005La, 1005Ra) of the laminated leaf springs (1005L, 1005R) are fixed to the cross member (1004), the laminated leaf springs (1005L, 1005R) are appropriately attached to the vehicle body frame (1001). Can be supported.
  • 1 Electric drive device for vehicles, 10 ... Axle case, 11 ... Motor, 11b ... Motor shaft, 13 ... Transmission (transmission gear mechanism), 14 ... Differential gear mechanism, 15L, 15R ... Drive shaft, 21 ... Input shaft, 22 ... Output shaft, 33, 35 ... Drive gear (gear), 34, 36 ... Driven gear (gear), 81 ... Through drive shaft, 91 ... Base member, 93R, 93L ... Cylindrical member, 100 ... Drive unit, 200 ... Transmission unit, 1000 ... Vehicle, 1001 ... Body frame, 1002 ... Suspension device, 1003L, 1003R ... Side rail, 1005L, 1005R ...
  • Laminated leaf spring (spring device), 1005La, 1005Ra ... Fixed part, 1005Lb, 1005Rb ... Connecting part , 1006L, 1006R ... Shock absorber (damping device), 1007L, 1007R ... Inner arrangement part, 1008 ... Body, D1 ... First direction, X ... Front and rear direction, Y ... Width direction, Z ... Vertical direction, L1 ... Motor shaft First direction dimension, L2 ... dimension in the direction orthogonal to the first direction of the motor, L3 ... dimension in the first direction of the input shaft, L4 ... dimension in the first direction of the output shaft, L5 ... first in the transmission gear mechanism Dimensions in the direction orthogonal to the direction, L6 ... Dimensions of the base member in the vertical direction X, L7 ... Dimensions of the tubular member in the vertical direction X

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

Abstract

Un dispositif d'entraînement électrique (1) pour un véhicule comprend : un carter d'essieu (10) accouplé à un châssis de carrosserie de véhicule (1001) par l'intermédiaire d'un dispositif de suspension (1002) ; un moteur (11) ; un mécanisme d'engrenage de transmission (13) ; et un mécanisme d'engrenage différentiel. Le carter d'essieu (10) abrite le mécanisme différentiel et une paire d'arbres d'entraînement (15L, 15R), et supporte le moteur (11) et le mécanisme d'engrenage de transmission (13). Un arbre de moteur et un arbre d'entrée et un arbre de sortie du mécanisme d'engrenage de transmission (13) sont disposés de façon à s'étendre dans une première direction (D1) le long d'une direction avant-arrière X, dans une vue dans le sens vertical. Le moteur (11) et le mécanisme d'engrenage de transmission (13) sont disposés entre une paire de rails latéraux (1003L, 1003R), dans une vue dans le sens vertical.
PCT/JP2021/013841 2020-03-31 2021-03-31 Dispositif d'entraînement électrique pour véhicule WO2021201102A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2020-065301 2020-03-31
JP2020065301 2020-03-31
JP2020094622 2020-05-29
JP2020-094622 2020-05-29

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WO2021201102A1 true WO2021201102A1 (fr) 2021-10-07

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508609U (fr) * 1973-05-21 1975-01-29
JPH02133910U (fr) * 1989-04-15 1990-11-07
JPH06270626A (ja) * 1993-03-22 1994-09-27 Hino Motors Ltd 後車軸の取付け構造
WO2014005698A1 (fr) * 2012-07-04 2014-01-09 Audi Ag Dispositif d'entraînement pour véhicules à moteur, notamment systèmes d'entraînement pouvant être désaccouplés
US20160207396A1 (en) * 2015-01-19 2016-07-21 Borgwarner Inc. E-assist with torque vectoring
CN108194581A (zh) * 2017-12-27 2018-06-22 合肥工业大学 一种由人字形齿轮构成的电动汽车两挡变速装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508609U (fr) * 1973-05-21 1975-01-29
JPH02133910U (fr) * 1989-04-15 1990-11-07
JPH06270626A (ja) * 1993-03-22 1994-09-27 Hino Motors Ltd 後車軸の取付け構造
WO2014005698A1 (fr) * 2012-07-04 2014-01-09 Audi Ag Dispositif d'entraînement pour véhicules à moteur, notamment systèmes d'entraînement pouvant être désaccouplés
US20160207396A1 (en) * 2015-01-19 2016-07-21 Borgwarner Inc. E-assist with torque vectoring
CN108194581A (zh) * 2017-12-27 2018-06-22 合肥工业大学 一种由人字形齿轮构成的电动汽车两挡变速装置

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