WO2024034489A1 - 車両用駆動装置 - Google Patents
車両用駆動装置 Download PDFInfo
- Publication number
- WO2024034489A1 WO2024034489A1 PCT/JP2023/028267 JP2023028267W WO2024034489A1 WO 2024034489 A1 WO2024034489 A1 WO 2024034489A1 JP 2023028267 W JP2023028267 W JP 2023028267W WO 2024034489 A1 WO2024034489 A1 WO 2024034489A1
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- WO
- WIPO (PCT)
- Prior art keywords
- specific
- radial direction
- bevel gear
- bevel
- shaft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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Classifications
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- 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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
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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
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- 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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
- F16H48/40—Constructional details characterised by features of the rotating cases
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/037—Gearboxes for accommodating differential gearings
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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
- B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
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- 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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
- F16H48/40—Constructional details characterised by features of the rotating cases
- F16H2048/405—Constructional details characterised by features of the rotating cases characterised by features of the bearing of the rotating case
Definitions
- the present invention provides an input member drivingly connected to a driving force source, a pair of output shafts each drivingly connected to a wheel, a speed reducer that decelerates the rotation of the input member, and a drive force transmitted through the speed reducer.
- the present invention relates to a vehicle drive device including a differential gear device that distributes rotation of an input member to a pair of output shafts.
- Patent Document 1 An example of such a vehicle drive device is disclosed in Patent Document 1 below.
- the reference numerals in Patent Document 1 will be cited in parentheses.
- the differential gear device (5) of the vehicle drive device (1) of Patent Document 1 includes a differential case (50) and a differential gear mechanism housed in the differential case.
- the differential gear mechanism includes a shaft member (51) formed to extend in the radial direction, a first bevel gear (52) rotatably supported by the shaft member, and a shaft member (51).
- a pair of second bevel gears (54A, 54B) are arranged separately on both sides in the axial direction and mesh with the first bevel gear (52).
- One second bevel gear (54A) is connected to rotate integrally with the first drive shaft (9A), and the other second bevel gear (54B) is connected integrally with the second drive shaft (9B). It is connected so that it can rotate.
- the other second bevel gear (54B) includes a bevel tooth portion that meshes with the first bevel gear (52), and a bevel tooth portion that is integrally formed with the bevel tooth portion.
- the cylindrical shaft portion (540) is supported from the outside in the radial direction by a differential case cylindrical portion (72) included in the differential case (50). Further, the bevel support portion is supported in the axial direction with respect to the inner surface of the differential case (50) via a washer inserted through the cylindrical shaft portion (540). In this way, the other second bevel gear (54B) is supported not only in the radial direction but also in the axial direction. Therefore, the axial dimension of the other second bevel gear (54B) tends to increase.
- cylindrical shaft portion (540) is connected to rotate integrally with a second drive shaft (9B) disposed radially inside of the cylindrical shaft portion (540).
- the cylindrical shaft portion (540) has an engaged portion connected to an engaging portion formed at the distal end portion of the second drive shaft (9B) by spline engagement, and a second drive shaft (9B). 9B) into which a portion adjacent in the axial direction is fitted.
- the cylindrical shaft part (540) has its relative rotation with respect to the second drive shaft (9B) regulated by the engaged part, and the rotation axis of the other second bevel gear (54B) by the fitting part.
- the cylindrical shaft portion (540) has a configuration in which the engaged portion and the fitting portion are arranged side by side in the axial direction. Therefore, the axial dimension of the other second bevel gear (54B) tends to increase.
- the configuration of the second bevel gear as described above has led to an increase in the size of the vehicle drive device. Therefore, it is desired to realize a vehicle drive device that is easy to downsize in a configuration that includes a bevel gear type differential gear device.
- the characteristic configuration of the vehicle drive device is as follows: an input member drivingly connected to the driving force source; a pair of output shafts each drivingly connected to a wheel; a reducer that reduces rotation of the input member;
- a vehicle drive device comprising: a differential gear device that distributes rotation of the input member transmitted via the speed reducer to the pair of output shafts;
- the direction along the output rotation axes that are the rotation axes of the pair of output shafts is defined as an axial direction, one side in the axial direction is defined as a first axial side, and the other side in the axial direction is defined as a second axial side.
- the differential gear device includes a differential case and a differential gear mechanism housed in the differential case,
- the differential gear mechanism includes a shaft member formed to extend along the radial direction, and a plurality of first shaft members rotatably supported by the shaft member and arranged separately in the circumferential direction.
- the pair of second bevel gears are each coupled to rotate integrally with the pair of output shafts, Of the pair of second bevel gears, the one disposed on the second side in the axial direction with respect to the shaft member is defined as a specific bevel gear, and rotates integrally with the specific bevel gear of the pair of output shafts.
- the one that does is set as the specific output shaft,
- the engaging portion provided on the specific output shaft and the engaged portion provided on the specific bevel gear control the relative movement of the specific output shaft and the specific bevel gear in the circumferential direction and the radial direction. engaged with each other in a restricting manner;
- the specific bevel gear is supported in the axial direction with respect to the differential case, but is not supported in the radial direction.
- the specific bevel gear is not supported in the radial direction with respect to the differential case, but is supported in the radial direction by an alignment effect caused by meshing between the specific bevel gear and the plurality of first bevel gears. ing. Therefore, it is possible to eliminate the need for a bearing or a fitting portion for supporting the specific bevel gear in the radial direction with respect to the differential case. Further, according to this characteristic configuration, the engaging portion of the specific output shaft and the engaged portion of the specific bevel gear are configured to restrict relative movement in the circumferential direction and relative movement in the radial direction.
- a cross-sectional view along the axial direction of a vehicle drive device according to an embodiment.
- Skeleton diagram of a vehicle drive device according to an embodiment A partially enlarged view of a cross-sectional view along the axial direction of the vehicle drive device according to the embodiment
- the vehicle drive device 100 includes an input member 10 drivingly connected to a driving force source D, and a pair of output shafts 2 each drivingly connected to a wheel W (see FIG. 2). , a reducer 3 that decelerates the rotation of the input member 10, and a differential gear device 4 that distributes the rotation of the input member 10 transmitted via the reducer 3 to the pair of output shafts 2. .
- the direction along the output rotation axis X which is the rotation axis of the pair of output shafts 2, will be referred to as the "axial direction L.”
- One side in the axial direction L is defined as the “first axial side L1”, and the other side in the axial direction L is defined as the “second axial side L2”.
- the direction perpendicular to the output rotation axis X is defined as the "radial direction R”.
- the side of the output rotation axis X is defined as the “radially inner side R1”
- the opposite side is defined as the "radially outer side R2".
- the direction of rotation around the output rotation axis X is defined as a "circumferential direction C.”
- the input member 10, the pair of output shafts 2, the reduction gear 3, and the differential gear device 4 are arranged coaxially. That is, the input member 10, the pair of output shafts 2, the reducer 3, and the differential gear device 4 are arranged on the output rotation axis X. Further, in this embodiment, the input member 10, the speed reducer 3, and the differential gear device 4 are arranged in the order described from the first axial side L1 to the second axial side L2.
- the vehicle drive device 100 further includes an outer case 9 that houses the input member 10, the reduction gear 3, and the differential gear device 4.
- the outer case 9 includes a first case member 91, a second case member 92, a support member 93, and a cover member 94.
- the first case member 91 includes a first side wall portion 911 and a first peripheral wall portion 912.
- the first side wall portion 911 is formed to extend along the radial direction R.
- the first side wall portion 911 is arranged to cover the differential gear device 4 from the second axial side L2.
- the first peripheral wall portion 912 is formed into a cylindrical shape having an axis along the axial direction L.
- the first peripheral wall portion 912 is arranged to cover the reducer 3 and the differential gear device 4 from the radially outer side R2.
- the first side wall 911 and the first A peripheral wall portion 912 is integrally formed.
- the first case member 91 is formed into a bottomed cylindrical shape that opens on the first axial side L1.
- the second case member 92 is configured as a separate member from the first case member 91.
- the second case member 92 is joined to the first case member 91 from the first axial side L1.
- the second case member 92 includes a second peripheral wall portion 921 .
- the second peripheral wall portion 921 is formed into a cylindrical shape having an axis along the axial direction L.
- the second peripheral wall portion 921 is arranged to cover the rotating electrical machine 1 from the radially outer side R2.
- the second peripheral wall portion 921 is joined to the first peripheral wall portion 912 of the first case member 91 from the first axial side L1.
- the support member 93 is configured as a separate member from the first case member 91 and the second case member 92.
- the support member 93 is formed to extend along the radial direction R.
- the support member 93 is arranged so as to partition, in the axial direction L, a region in which the rotating electrical machine 1 is arranged and a region in which the reducer 3 and the differential gear device 4 are arranged inside the outer case 9 . That is, the support member 93 is arranged between the rotating electric machine 1 and the reduction gear 3 in the axial direction L.
- the support member 93 is fixed to the first case member 91. In this embodiment, the support member 93 is fixed to the first peripheral wall portion 912 so as to extend radially inward R1 with respect to the first peripheral wall portion 912.
- the cover member 94 is configured as a separate member from the first case member 91, the second case member 92, and the support member 93.
- the cover member 94 includes a second side wall portion 941 and a third peripheral wall portion 942.
- the second side wall portion 941 is formed to extend along the radial direction R.
- the second side wall portion 941 is arranged to cover the rotating electrical machine 1 from the first axial side L1.
- the third peripheral wall portion 942 is formed into a cylindrical shape having an axis along the axial direction L.
- the third peripheral wall portion 942 is joined to the second peripheral wall portion 921 of the second case member 92 from the first axial side L1.
- the second side wall 941 and the third side A peripheral wall portion 942 is integrally formed. That is, the cover member 94 is formed into a bottomed cylindrical shape that is open to the second axial side L2.
- the driving force source D is the rotating electric machine 1 including the stator 11 and the rotor 12.
- the rotating electric machine 1 functions as a driving force source for a pair of wheels W (see FIG. 2).
- the rotating electric machine 1 has a function as a motor (electric motor) that receives power supply and generates power, and a function as a generator (generator) that receives power supply and generates power.
- the rotating electrical machine 1 is electrically connected to a power storage device (not shown) such as a battery or a capacitor. Then, the rotating electric machine 1 performs power running using the electric power stored in the power storage device to generate driving force. Further, the rotating electric machine 1 generates power using the driving force transmitted from the pair of wheels W to charge the power storage device.
- the stator 11 of the rotating electrical machine 1 includes a cylindrical stator core 11a.
- the stator core 11a is fixed to the outer case 9 (here, the second peripheral wall portion 921 of the second case member 92).
- the rotor 12 of the rotating electric machine 1 includes a cylindrical rotor core 12a.
- Rotor core 12a is rotatably supported relative to stator core 11a.
- the rotor core 12a is connected to the rotor shaft 12b so as to rotate integrally with the rotor shaft 12b.
- the rotor shaft 12b corresponds to the input member 10.
- the rotor shaft 12b is formed into a cylindrical shape coaxial with the rotor core 12a.
- the rotor shaft 12b is arranged so as to protrude from the rotor core 12a on both sides in the axial direction L.
- a portion of the rotor shaft 12b that protrudes from the rotor core 12a toward the first axial side L1 is rotatably supported by the first support portion 943 provided in the cover member 94 of the outer case 9 via the first bearing B1. has been done.
- the first support portion 943 is formed in a cylindrical shape that protrudes from the second side wall portion 941 toward the second axial side L2 and covers the rotor shaft 12b from the radial outer side R2.
- the first bearing B1 is arranged between the first support portion 943 and the rotor shaft 12b in the radial direction R. Further, in this embodiment, a portion of the rotor shaft 12b that protrudes from the rotor core 12a toward the second axial side L2 is arranged to penetrate the support member 93 of the outer case 9 in the axial direction L. A portion of the rotor shaft 12b that protrudes from the rotor core 12a toward the second axial side L2 is rotatably supported by the support member 93 via the second bearing B2.
- the rotating electrical machine 1 is an inner rotor type rotating electrical machine. Therefore, the rotor core 12a is arranged on the radially inner side R1 with respect to the stator core 11a. Further, the rotor shaft 12b is arranged on the radially inner side R1 with respect to the rotor core 12a.
- the rotating electrical machine 1 is a rotating field type rotating electrical machine. Therefore, the stator 11 further includes a stator coil 11b. In this embodiment, the stator coil 11b is wound around the stator core 11a so that coil end portions protruding from both sides of the stator core 11a in the axial direction L are formed. Although not shown, the rotor core 12a is provided with a permanent magnet.
- the reducer 3 is a planetary gear mechanism including a sun gear SG, a carrier CR, a first ring gear RG1, and a second ring gear RG2.
- sun gear SG is connected to rotor 12 so as to rotate integrally with it.
- the sun gear SG is connected to the rotor shaft 12b by welding or the like so as to rotate integrally with the rotor shaft 12b.
- the carrier CR is configured to rotatably support the first pinion gear PG1 and the second pinion gear PG2.
- the first pinion gear PG1 and the second pinion gear PG2 are connected to rotate integrally with each other.
- First pinion gear PG1 meshes with sun gear SG and first ring gear RG1.
- the second pinion gear PG2 meshes with the second ring gear RG2.
- the second pinion gear PG2 is formed to have a smaller diameter than the first pinion gear PG1.
- the first ring gear RG1 is fixed to the outer case 9.
- the first ring gear RG1 is fixed to a support member 93 of the outer case 9.
- the differential gear device 4 includes a differential case 5 and a differential gear mechanism 6 housed in the differential case 5.
- the differential gear device 4 is a bevel gear type differential gear device.
- the differential case 5 is configured to rotate around the output rotation axis X.
- Differential case 5 is an input element of differential gear device 4 .
- the differential case 5 is connected by welding or the like so as to rotate integrally with the second ring gear RG2 of the reducer 3.
- the differential gear mechanism 6 includes a shaft member 61, a plurality of first bevel gears 62, and a pair of second bevel gears 63.
- the shaft member 61 is supported by the differential case 5 so as to rotate integrally with the differential case 5.
- the shaft member 61 is formed to extend along the radial direction R.
- the shaft member 61 has a radial configuration along the radial direction R (for example, a cross-shaped configuration when viewed in the axial direction along the axial direction L).
- the plurality of first bevel gears 62 are arranged separately in the circumferential direction C.
- the plurality of first bevel gears 62 are rotatably supported by the shaft member 61. More specifically, each of the plurality of first bevel gears 62 is configured to be freely rotatable (rotate) about its axis and rotatably (revolution) about the output rotation axis X. In this example, four first bevel gears 62 are provided.
- the pair of second bevel gears 63 are arranged separately on both sides of the shaft member 61 in the axial direction L.
- the pair of second bevel gears 63 mesh with the plurality of first bevel gears 62.
- the pair of second bevel gears 63 are configured to rotate around the output rotation axis X.
- the pair of second bevel gears 63 are each connected to the pair of output shafts 2 so as to rotate integrally therewith.
- the one disposed on the second axial side L2 with respect to the shaft member 61 will be referred to as a "specific bevel gear 63S".
- the one disposed on the first axial side L1 with respect to the shaft member 61 is referred to as a "non-specific bevel gear 63N.”
- the one that rotates integrally with the specific bevel gear 63S is referred to as a "specific output shaft 2S.”
- the one that rotates integrally with the non-specific bevel gear 63N is referred to as the "non-specific output shaft 2N.”
- the specific output shaft 2S is a drive shaft.
- the non-specific output shaft 2N includes a transmission shaft 21 and a drive shaft 22.
- the transmission shaft 21 is connected to the non-specific bevel gear 63N so as to rotate together with the non-specific bevel gear 63N.
- the transmission shaft 21 is inserted into the radially inner side R1 of the non-specific bevel gear 63N from the first axial side L1, and is connected to the non-specific bevel gear 63N by spline engagement.
- the transmission shaft 21 is connected to a drive shaft 22 so as to rotate integrally therewith.
- the transmission shaft 21 includes a connecting portion 211 connected to the drive shaft 22.
- the connecting portion 211 is arranged at the end of the transmission shaft 21 on the first axial side L1.
- the connecting portion 211 is formed in a cylindrical shape that opens toward the first axial side L1.
- the drive shaft 22 is inserted into the radially inner side R1 of the connecting portion 211 from the first axial side L1, and the drive shafts 22 are connected to each other by spline engagement.
- the connecting portion 211 is rotatably supported by the second support portion 944 provided in the cover member 94 of the outer case 9 via the third bearing B3.
- the second support portion 944 is formed in a cylindrical shape that protrudes from the second side wall portion 941 toward the first side L1 in the axial direction and covers the connecting portion 211 from the outside R2 in the radial direction.
- a third bearing B3 is disposed between the second support portion 944 and the connecting portion 211 in the radial direction R.
- the first seal member 71 is provided between the connecting portion 211 and the second support portion 944 in the radial direction R.
- the first seal member 71 is arranged to provide an oil-tight seal between the outer peripheral surface of the connecting portion 211 and the inner peripheral surface of the second support portion 944.
- the specific bevel gear 63S includes a bevel tooth portion 631, a bevel tooth support portion 632, and a cylindrical shaft portion 633.
- the bevel tooth portion 631 is formed to mesh with the plurality of first bevel gears 62.
- the bevel tooth portion 631 is composed of a plurality of tooth portions arranged at equal intervals in the circumferential direction C.
- the bevel tooth support portion 632 is configured to support the bevel tooth portion 631.
- the bevel tooth support portion 632 is integrally formed with the bevel tooth portion 631. More specifically, the bevel tooth support portion 632 has a truncated conical side surface facing the first axial side L1 and the radial outer side R2, and the bevel tooth portion 631 is formed on the surface.
- the bevel support portion 632 is located between the surface of the bevel support portion 632 facing the second axial side L2 and the portion of the inner surface of the differential case 5 facing the first axial side L1. It is rotatably supported with respect to the differential case 5 via the disposed washer WS. In this way, the specific bevel gear 63S is supported in the axial direction L with respect to the differential case 5.
- the cylindrical shaft portion 633 is formed in a cylindrical shape extending from the bevel support portion 632 to the second axial side L2. In the example shown in FIG. 3, the cylindrical shaft portion 633 is integrally formed with the bevel tooth support portion 632.
- the differential case 5 includes a differential case cylindrical portion 51.
- the differential case cylindrical portion 51 is formed into a cylindrical shape.
- the differential case cylindrical portion 51 is arranged to cover the cylindrical shaft portion 633 of the specific bevel gear 63S from the radially outer side R2.
- a first clearance C1 which is a gap in the radial direction R, is provided between the outer peripheral surface of the cylindrical shaft portion 633 and the inner peripheral surface of the differential case cylindrical portion 51.
- the specific bevel gear 63S is not supported in the radial direction R with respect to the differential case 5.
- the specific bevel gear 63S is supported in the radial direction R by an alignment effect caused by meshing with the plurality of first bevel gears 62.
- the specific output shaft 2S includes an engaging portion 2a.
- the specific bevel gear 63S includes an engaged portion 6a with which the engaging portion 2a is engaged.
- the engaging portion 2a and the engaged portion 6a are engaged with each other so as to restrict the relative movement of the specific output shaft 2S and the specific bevel gear 63S in the circumferential direction C and the radial direction R.
- a portion of the specific output shaft 2S on the second axial side L2 from the portion where the engaging portion 2a is formed is spaced apart from the specific bevel gear 63S (specifically, the cylindrical shaft portion 633). It is arranged as follows. Further, in this embodiment, the specific output shaft 2S is arranged apart from the differential case 5. In the example shown in FIG.
- the portion of the specific output shaft 2S that faces the differential case cylindrical portion 51 in the radial direction R is a cylindrical portion disposed with a gap in the radial direction R from the differential case cylindrical portion 51. It is covered by the shaft portion 633 from the radially outer side R2.
- each of the engaging portion 2a and the engaged portion 6a is constituted by a plurality of spline teeth distributed in the circumferential direction C.
- the specific output shaft 2S is inserted from the second axial side L2 into the radially inner side R1 of the cylindrical shaft portion 633 of the specific bevel gear 63S.
- An engaging portion 2a is formed on the outer circumferential surface of a portion of the specific output shaft 2S that is inserted into the cylindrical shaft portion 633, and an engaged portion 6a is formed on the inner circumferential surface of the cylindrical shaft portion 633.
- the vehicle drive device 100 is an input member 10 drivingly connected to a driving force source D; a pair of output shafts 2 each drivingly connected to a wheel W; a reducer 3 that decelerates the rotation of the input member 10;
- a vehicle drive device 100 comprising a differential gear device 4 that distributes rotation of an input member 10 transmitted via a speed reducer 3 to a pair of output shafts 2,
- the differential gear device 4 includes a differential case 5 and a differential gear mechanism 6 housed in the differential case 5,
- the differential gear mechanism 6 includes a shaft member 61 formed to extend along the radial direction R, and a plurality of shaft members rotatably supported by the shaft member 61 and arranged separately in the circumferential direction C.
- the pair of second bevel gears 63 are each coupled to rotate integrally with the pair of output shafts 2,
- the one disposed on the second axial side L2 with respect to the shaft member 61 is defined as a specific bevel gear 63S, and is integrated with the specific bevel gear 63S of the pair of output shafts 2.
- the rotating side is designated as the specific output shaft 2S
- the engaging portion 2a provided on the specific output shaft 2S and the engaged portion 6a provided on the specific bevel gear 63S are relative to each other in the circumferential direction C and the radial direction R between the specific output shaft 2S and the specific bevel gear 63S. engaged with each other so as to restrict movement;
- the specific bevel gear 63S is supported in the axial direction L with respect to the differential case 5, but is not supported in the radial direction R.
- the specific bevel gear 63S is not supported in the radial direction R with respect to the differential case 5, and the radial diameter is It is supported in direction R. Therefore, it is possible to eliminate the need for a bearing or a fitting part for supporting the specific bevel gear 63S in the radial direction R with respect to the differential case 5. Further, according to this configuration, the engaging portion 2a of the specific output shaft 2S and the engaged portion 6a of the specific bevel gear 63S restrict relative movement in the circumferential direction C and relative movement in the radial direction R.
- the specific bevel gear 63S includes a bevel tooth portion 631 that meshes with the plurality of first bevel gears 62, and a bevel tooth portion 631 that is integrally formed with the bevel tooth portion 631.
- the differential case 5 includes a differential case cylindrical portion 51 formed in a cylindrical shape and arranged to cover the cylindrical shaft portion 633 from the radially outer side R2, A first clearance C1, which is a gap in the radial direction R, is provided between the outer peripheral surface of the cylindrical shaft portion 633 and the inner peripheral surface of the differential case cylindrical portion 51.
- a second clearance C2 which is a gap in the radial direction R, is provided between each tooth surface of the plurality of first bevel gears 62 and the tooth surface of the specific bevel gear 63S. It is being The first clearance C1 is larger than the second clearance C2.
- the tooth surface of the first bevel gear 62 is an uneven surface forming teeth of the first bevel gear 62, and is a surface facing outward in a direction perpendicular to the rotation axis of the first bevel gear 62.
- the tooth surface of the specific bevel gear 63S is an uneven surface forming the teeth of the specific bevel gear 63S, and is a surface facing one side in the axial direction L (here, the first axial side L1).
- the second clearance C2 is the interval in the radial direction R between the tooth surfaces of each of the plurality of first bevel gears 62 and the tooth surface of the specific bevel gear 63S facing each other in the radial direction R.
- a part of the tooth top surface of the first bevel gear 62 and a part of the tooth bottom surface of the specific bevel gear 63S are arranged to face each other in the radial direction R.
- each of the tooth top surface of the first bevel gear 62 and the tooth bottom surface of the specific bevel gear 63S has an inclination that gradually slopes toward the axially first side L1 as it goes toward the radially inner side R1. It has a department. A second clearance C2 is provided between these inclined portions in the radial direction R.
- the outer case 9 further includes an outer support portion 914.
- the outer support portion 914 is arranged on the outer side R2 in the radial direction with respect to the differential case cylindrical portion 51.
- the outer support portion 914 is formed to protrude from the end portion of the first side wall portion 911 of the first case member 91 on the radially inner side R1 to the radially inner side R1.
- the outer support portion 914 is formed in an annular shape having the output rotation axis X as its axis.
- the differential case 5 further includes a radially extending portion 52.
- the radial extending portion 52 is formed to extend along the radial direction R.
- the radially extending portion 52 is disposed on the first axial side L1 with respect to the outer support portion 914.
- the radially extending portion 52 is supported in the axial direction L between the surface of the radially extending portion 52 facing the second axial side L2 and the surface of the outer support portion 914 facing the first axial side L1.
- a thrust bearing B4 is provided.
- thrust bearing B4 is a needle roller bearing.
- the above-mentioned A washer WS is provided.
- a radial bearing B5 that supports the differential case cylindrical portion 51 in the radial direction R is provided between the outer circumferential surface of the differential case cylindrical portion 51 and the inner circumferential surface of the outer support portion 914. ing.
- the radial bearing B5 is a bush.
- the present embodiment further includes the outer case 9 that houses the input member 10, the reducer 3, and the differential gear device 4,
- the outer case 9 includes an outer support portion 914 disposed on the radially outer side R2 with respect to the differential case cylindrical portion 51
- the differential case 5 further includes a radially extending portion 52 formed to extend along the radial direction R and disposed on the first axial side L1 with respect to the outer support portion 914,
- the radially extending portion 52 is supported in the axial direction L between the surface of the radially extending portion 52 facing the second axial side L2 and the surface of the outer support portion 914 facing the first axial side L1.
- a thrust bearing B4 is provided
- a radial bearing B5 that supports the differential case cylindrical portion 51 in the radial direction R is provided between the outer circumferential surface of the differential case cylindrical portion 51 and the inner circumferential surface of the outer support portion 914.
- the bearings that support the differential case 5 with respect to the outer case 9 are divided into the thrust bearing B4 that supports in the axial direction L and the radial bearing B5 that supports in the radial direction R. It is easy to downsize the bearing B5. Therefore, the structure around the radial bearing B5 in the differential case 5 and the outer case 9 can also be easily downsized.
- the outer case 9 further includes an outer case cylindrical portion 915.
- the outer case cylindrical portion 915 is formed into a cylindrical shape.
- the outer case cylindrical portion 915 is arranged to cover the cylindrical shaft portion 633 from the radially outer side R2.
- the outer case cylindrical portion 915 is formed to protrude from the radially inner end R1 of the first side wall portion 911 of the first case member 91 toward the second axial side L2.
- a second seal member 72 is provided to provide an oil-tight seal between the outer circumferential surface of the cylindrical shaft portion 633 and the inner circumferential surface of the outer case cylindrical portion 915.
- the cylindrical shaft portion 633 has a protrusion that protrudes toward the second axial side L2 with respect to the differential case cylindrical portion 51, and the outer periphery of the protrusion of the cylindrical shaft portion 633.
- a second seal member 72 is disposed between the surface and the inner peripheral surface of the outer case cylindrical portion 915. The second seal member 72 is arranged so as to overlap the engaged portion 6a of the specific bevel gear 63S when viewed in the radial direction R.
- overlapping when viewed in a specific direction means that when a virtual straight line parallel to the line of sight is moved in each direction orthogonal to the virtual straight line, the virtual straight line becomes two Refers to the existence of at least a part of the area that intersects both of the two elements.
- the present embodiment further includes the outer case 9 that houses the input member 10, the reducer 3, and the differential gear device 4,
- the outer case 9 further includes an outer case cylindrical portion 915 formed in a cylindrical shape and arranged to cover the cylindrical shaft portion 633 from the radially outer side R2,
- a second seal member 72 is provided to provide an oil-tight seal between the outer circumferential surface of the cylindrical shaft portion 633 and the inner circumferential surface of the outer case cylindrical portion 915.
- the second seal member 72 is arranged so as to overlap the engaged portion 6a when viewed in the radial direction R.
- this configuration is because the specific bevel gear 63S is not provided with a fitting part for regulating the deviation or inclination between the rotational axis of the specific output shaft 2S and the rotational axis of the specific bevel gear 63S. It is now possible. According to this configuration, the size of the vehicle drive device 100 in the axial direction L can be kept small compared to a configuration in which the second seal member 72 is disposed offset in the axial direction L from the engaged portion 6a. It is possible to appropriately restrict leakage of oil inside the outer case 9 from the gap in the radial direction R between the outer circumferential surface of the cylindrical shaft portion 633 and the inner circumferential surface of the outer case cylindrical portion 915.
- This embodiment further includes an outer case 9 that accommodates the input member 10, the reducer 3, and the differential gear device 4,
- the outer case 9 includes an outer support portion 914 disposed on the radially outer side R2 with respect to the differential case cylindrical portion 51,
- the outer support portion 914, the differential case cylindrical portion 51, and the engaged portion 6a are arranged so as to overlap each other when viewed in the radial direction R.
- the axial direction L of the vehicle drive device 100 is Easy to keep dimensions small.
- the configuration in which the driving force source D drivingly connected to the input member 10 is the rotating electric machine 1 has been described as an example.
- the driving force source D may be an internal combustion engine without being limited to such a configuration.
- the input member 10, the pair of output shafts 2, the reducer 3, and the differential gear device 4 are arranged coaxially, and the input member 10, the reducer 3, and the differential gear device 4 are arranged coaxially.
- the configuration in which the components are arranged in the order described from the first axial side L1 to the second axial side L2 has been described as an example.
- the present invention is not limited to such a configuration, and a configuration may be adopted in which at least one of the input member 10, the pair of output shafts 2, the speed reducer 3, and the differential gear device 4 are arranged on separate shafts.
- the order in which the input member 10, the speed reducer 3, and the differential gear device 4 are arranged in the axial direction L may be different from the above order.
- the reduction gear 3 is a planetary gear mechanism disposed on the output rotation axis X as an example.
- the reduction gear 3 may be a counter gear mechanism instead of a planetary gear mechanism.
- the counter gear mechanism is arranged across the output rotation axis X and an axis different from the output rotation axis X.
- the structure in which the speed reducer 3 is a planetary gear mechanism including the sun gear SG, the carrier CR, the first ring gear RG1, and the second ring gear RG2 has been described as an example.
- the reducer 3 may be a single pinion type planetary gear mechanism.
- the second seal member 72 is arranged so as to overlap the engaged portion 6a when viewed in the radial direction R.
- the second seal member 72 may be disposed on the second axial side L2 with respect to the engaged portion 6a.
- the outer support portion 914, the differential case cylindrical portion 51, and the engaged portion 6a are arranged so as to overlap each other when viewed in the radial direction R.
- the engaged portion 6a may be disposed on the second axial side L2 relative to the outer support portion 914 and the differential case cylindrical portion 51.
- the vehicle drive device (100) includes: an input member (10) drivingly coupled to a driving force source (D); a pair of output shafts (2) each drivingly connected to a wheel (W); a reducer (3) that reduces the rotation of the input member (10);
- a vehicle drive device (100) comprising: a differential gear device (4) that distributes rotation of the input member (10) transmitted via the speed reducer (3) to a pair of the output shafts (2); ),
- the direction along the output rotation axis (X), which is the rotation axis of the pair of output shafts (2), is defined as the axial direction (L), and one side of the axial direction (L) is defined as the first axial side (L1).
- the differential gear device (4) includes a differential case (5) and a differential gear mechanism (6) housed in the differential case (5), The differential gear mechanism (6) is rotatably supported by a shaft member (61) formed to extend along the radial direction (R) and the shaft member (61).
- a pair of second bevel gears (63) meshing with the bevel gear (62), The pair of second bevel gears (63) are each coupled to rotate integrally with the pair of output shafts (2), Of the pair of second bevel gears (63), the one disposed on the second axial side (L2) with respect to the shaft member (61) is defined as a specific bevel gear (63S), and the pair of output shafts Among (2), the one that rotates integrally with the specific bevel gear (63S) is defined as the specific output shaft (2S), The engaging portion (2a) provided on the specific output shaft (2S) and the engaged portion (6a) provided on the specific bevel gear (63S) are connected to the specific output shaft (2S) and the specific bevel gear (63S).
- the specific bevel gear (63S) is supported in the axial direction (L) with respect to the differential case (5), but is not supported in the radial direction (R).
- the specific bevel gear (63S) is not supported in the radial direction (R) with respect to the differential case (5), and the specific bevel gear (63S) and the plurality of first bevel gears (62 ) is supported in the radial direction (R) by the alignment effect caused by meshing with Therefore, it is possible to eliminate the need for a bearing or a fitting part for supporting the specific bevel gear (63S) in the radial direction (R) with respect to the differential case (5). Further, according to this configuration, the engaging portion (2a) of the specific output shaft (2S) and the engaged portion (6a) of the specific bevel gear (63S) are moved relative to each other in the circumferential direction (C) and in the radial direction.
- the specific bevel gear (63S) includes a bevel tooth portion (631) that meshes with the plurality of first bevel gears (62), and a bevel tooth portion that is integrally formed with the bevel tooth portion (631). (631); and a cylindrical shaft portion (633) extending from the bevel support portion (632) toward the second axial side (L2). and,
- the differential case (5) is formed in a cylindrical shape and includes a differential case cylindrical portion (51) arranged to cover the cylindrical shaft portion (633) from the outside (R2) in the radial direction (R). ), A first clearance (C1), which is a gap in the radial direction (R), is provided between the outer circumferential surface of the cylindrical shaft portion (633) and the inner circumferential surface of the differential case cylindrical portion (51). It is preferable if
- a second clearance (C2) which is a gap in the radial direction (R), is provided between each tooth surface of the plurality of first bevel gears (62) and the tooth surface of the specific bevel gear (63S).
- the first clearance (C1) is preferably larger than the second clearance (C2).
- the vehicle drive device (100) further includes an outer case (9) that houses the input member (10), the speed reducer (3), and the differential gear device (4),
- the outer case (9) includes an outer case cylindrical part (915) formed in a cylindrical shape and arranged to cover the cylindrical shaft part (633) from the outside (R2) in the radial direction (R).
- a sealing member (72) is provided to provide an oil-tight seal between the outer circumferential surface of the cylindrical shaft portion (633) and the inner circumferential surface of the outer case cylindrical portion (915),
- the sealing member (72) is preferably arranged to overlap the engaged portion (6a) when viewed in the radial direction (R).
- the fitting part for regulating the deviation or inclination between the rotation axis of the specific output shaft (2S) and the rotation axis of the specific bevel gear (63S) is attached to the specific bevel gear (63S). This is possible because it is not provided.
- the second seal member (72) is disposed deviated from the engaged portion (6a) in the axial direction (L)
- the axial direction of the vehicle drive device (100) While keeping the dimension in the direction (L) small, the outer case (9) is removed from the gap in the radial direction (R) between the outer peripheral surface of the cylindrical shaft portion (633) and the inner peripheral surface of the outer case cylindrical portion (915). It is possible to appropriately control the leakage of the oil inside.
- the vehicle drive device (100) further includes an outer case (9) that houses the input member (10), the speed reducer (3), and the differential gear device (4),
- the outer case (9) includes an outer support part (914) disposed on the outer side (R2) in the radial direction (R) with respect to the differential case cylindrical part (51),
- the outer support portion (914), the differential case cylindrical portion (51), and the engaged portion (6a) are arranged so as to overlap each other when viewed in a radial direction along the radial direction (R). It is preferable to have one.
- the technology according to the present disclosure includes an input member drivingly connected to a driving force source, a pair of output shafts each drivingly connected to a wheel, a reducer that decelerates the rotation of the input member, and
- the present invention can be used in a vehicle drive device including a differential gear device that distributes the transmitted rotation of an input member to a pair of output shafts.
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Abstract
Description
駆動力源に駆動連結される入力部材と、
それぞれが車輪に駆動連結される一対の出力軸と、
前記入力部材の回転を減速する減速機と、
前記減速機を介して伝達される前記入力部材の回転を一対の前記出力軸に分配する差動歯車装置と、を備えた車両用駆動装置であって、
一対の前記出力軸の回転軸心である出力回転軸心に沿う方向を軸方向とし、前記軸方向の一方側を軸方向第1側とし、前記軸方向の他方側を軸方向第2側とし、前記出力回転軸心に直交する方向を径方向とし、前記出力回転軸心を周回する方向を周方向として、
前記差動歯車装置は、差動ケースと、前記差動ケースに収容された差動歯車機構と、を備え、
前記差動歯車機構は、前記径方向に沿って延在するように形成された軸部材と、前記軸部材によって回転自在に支持されていると共に前記周方向に分かれて配置された複数の第1傘歯車と、前記軸部材に対して前記軸方向の両側に分かれて配置されて複数の前記第1傘歯車に噛み合う一対の第2傘歯車と、を備え、
一対の前記第2傘歯車は、それぞれ一対の前記出力軸と一体的に回転するように連結され、
一対の前記第2傘歯車のうち、前記軸部材に対して前記軸方向第2側に配置された方を特定傘歯車とし、一対の前記出力軸のうち、前記特定傘歯車と一体的に回転する方を特定出力軸として、
前記特定出力軸に設けられた係合部と、前記特定傘歯車に設けられた被係合部とが、前記特定出力軸と前記特定傘歯車との前記周方向及び前記径方向の相対移動を規制するように、互いに係合され、
前記特定傘歯車は、前記差動ケースに対して前記軸方向に支持されているが、前記径方向に支持されていない点にある。
また、本特徴構成によれば、特定出力軸の係合部と特定傘歯車の被係合部とが、周方向の相対移動と径方向の相対移動とを規制するように構成している。そのため、特定出力軸が嵌合し、特定出力軸の回転軸心と特定傘歯車の回転軸心とのずれや傾きを規制するための嵌合部を特定傘歯車に設ける必要がない。
以上のように、本特徴構成によれば、差動ケースに対する特定傘歯車及び特定出力軸の支持構造の小型化を図り易い。したがって、傘歯車式の差動歯車装置を備えた構成において、車両用駆動装置の小型化を図り易い。
図1及び図2に示すように、車両用駆動装置100は、駆動力源Dに駆動連結される入力部材10と、それぞれが車輪W(図2参照)に駆動連結される一対の出力軸2と、入力部材10の回転を減速する減速機3と、当該減速機3を介して伝達される入力部材10の回転を一対の出力軸2に分配する差動歯車装置4と、を備えている。
駆動力源Dに駆動連結される入力部材10と、
それぞれが車輪Wに駆動連結される一対の出力軸2と、
入力部材10の回転を減速する減速機3と、
減速機3を介して伝達される入力部材10の回転を一対の出力軸2に分配する差動歯車装置4と、を備えた車両用駆動装置100であって、
差動歯車装置4は、差動ケース5と、当該差動ケース5に収容された差動歯車機構6と、を備え、
差動歯車機構6は、径方向Rに沿って延在するように形成された軸部材61と、当該軸部材61によって回転自在に支持されていると共に周方向Cに分かれて配置された複数の第1傘歯車62と、軸部材61に対して軸方向Lの両側に分かれて配置されて複数の第1傘歯車62に噛み合う一対の第2傘歯車63と、を備え、
一対の第2傘歯車63は、それぞれ一対の出力軸2と一体的に回転するように連結され、
一対の第2傘歯車63のうち、軸部材61に対して軸方向第2側L2に配置された方を特定傘歯車63Sとし、一対の出力軸2のうち、特定傘歯車63Sと一体的に回転する方を特定出力軸2Sとして、
特定出力軸2Sに設けられた係合部2aと、特定傘歯車63Sに設けられた被係合部6aとが、特定出力軸2Sと特定傘歯車63Sとの周方向C及び径方向Rの相対移動を規制するように、互いに係合され、
特定傘歯車63Sは、差動ケース5に対して軸方向Lに支持されているが、径方向Rに支持されていない。
また、本構成によれば、特定出力軸2Sの係合部2aと特定傘歯車63Sの被係合部6aとが、周方向Cの相対移動と径方向Rの相対移動とを規制するように構成している。そのため、特定出力軸2Sが嵌合し、特定出力軸2Sの回転軸心と特定傘歯車63Sの回転軸心とのずれや傾きを規制するための嵌合部を特定傘歯車63Sに設ける必要がない。
以上のように、本構成によれば、差動ケース5に対する特定傘歯車63S及び特定出力軸2Sの支持構造の小型化を図り易い。したがって、傘歯車式の差動歯車装置4を備えた構成において、車両用駆動装置100の小型化を図り易い。
差動ケース5は、筒状に形成されて筒状軸部633を径方向外側R2から覆うように配置された差動ケース筒状部51を備え、
筒状軸部633の外周面と差動ケース筒状部51の内周面との間に、径方向Rの隙間である第1クリアランスC1が設けられている。
外側ケース9は、差動ケース筒状部51に対して径方向外側R2に配置された外側支持部914を備え、
差動ケース5は、径方向Rに沿って延在するように形成されて外側支持部914に対して軸方向第1側L1に配置された径方向延在部52を更に備え、
径方向延在部52における軸方向第2側L2を向く面と、外側支持部914における軸方向第1側L1を向く面との間に、径方向延在部52を軸方向Lに支持するスラスト軸受B4が設けられ、
差動ケース筒状部51の外周面と、外側支持部914の内周面との間に、差動ケース筒状部51を径方向Rに支持するラジアル軸受B5が設けられている。
外側ケース9は、筒状に形成されて筒状軸部633を径方向外側R2から覆うように配置された外側ケース筒状部915を更に備え、
筒状軸部633の外周面と外側ケース筒状部915の内周面との間を油密状にシールする第2シール部材72が設けられ、
第2シール部材72は、径方向Rに沿う径方向視で、被係合部6aと重複するように配置されている。
外側ケース9は、差動ケース筒状部51に対して径方向外側R2に配置された外側支持部914を備え、
外側支持部914と差動ケース筒状部51と被係合部6aとが、径方向Rに沿う径方向視で互いに重複するように配置されている。
(1)上記の実施形態では、入力部材10に駆動連結される駆動力源Dが回転電機1である構成を例として説明した。しかし、そのような構成に限定されることなく、駆動力源Dが内燃機関であっても良い。この場合において、回転電機1が設けられず、内燃機関の駆動力のみを利用して車輪Wが駆動される構成とすることが可能である。或いは、内燃機関及び回転電機の双方の駆動力を利用して車輪Wが駆動される構成、つまり、車両用駆動装置100がハイブリッド自動車用の駆動装置である構成とすることも可能である。
以下では、上記において説明した車両用駆動装置(100)の概要について説明する。
駆動力源(D)に駆動連結される入力部材(10)と、
それぞれが車輪(W)に駆動連結される一対の出力軸(2)と、
前記入力部材(10)の回転を減速する減速機(3)と、
前記減速機(3)を介して伝達される前記入力部材(10)の回転を一対の前記出力軸(2)に分配する差動歯車装置(4)と、を備えた車両用駆動装置(100)であって、
一対の前記出力軸(2)の回転軸心である出力回転軸心(X)に沿う方向を軸方向(L)とし、前記軸方向(L)の一方側を軸方向第1側(L1)とし、前記軸方向(L)の他方側を軸方向第2側(L2)とし、前記出力回転軸心(X)に直交する方向を径方向(R)とし、前記出力回転軸心(X)を周回する方向を周方向(C)として、
前記差動歯車装置(4)は、差動ケース(5)と、前記差動ケース(5)に収容された差動歯車機構(6)と、を備え、
前記差動歯車機構(6)は、前記径方向(R)に沿って延在するように形成された軸部材(61)と、前記軸部材(61)によって回転自在に支持されていると共に前記周方向(C)に分かれて配置された複数の第1傘歯車(62)と、前記軸部材(61)に対して前記軸方向(L)の両側に分かれて配置されて複数の前記第1傘歯車(62)に噛み合う一対の第2傘歯車(63)と、を備え、
一対の前記第2傘歯車(63)は、それぞれ一対の前記出力軸(2)と一体的に回転するように連結され、
一対の前記第2傘歯車(63)のうち、前記軸部材(61)に対して前記軸方向第2側(L2)に配置された方を特定傘歯車(63S)とし、一対の前記出力軸(2)のうち、前記特定傘歯車(63S)と一体的に回転する方を特定出力軸(2S)として、
前記特定出力軸(2S)に設けられた係合部(2a)と、前記特定傘歯車(63S)に設けられた被係合部(6a)とが、前記特定出力軸(2S)と前記特定傘歯車(63S)との前記周方向(C)及び前記径方向(R)の相対移動を規制するように、互いに係合され、
前記特定傘歯車(63S)は、前記差動ケース(5)に対して前記軸方向(L)に支持されているが、前記径方向(R)に支持されていない。
また、本構成によれば、特定出力軸(2S)の係合部(2a)と特定傘歯車(63S)の被係合部(6a)とが、周方向(C)の相対移動と径方向(R)の相対移動とを規制するように構成している。そのため、特定出力軸(2S)が嵌合し、特定出力軸(2S)の回転軸心と特定傘歯車(63S)の回転軸心とのずれや傾きを規制するための嵌合部を特定傘歯車(63S)に設ける必要がない。
以上のように、本構成によれば、差動ケース(5)に対する特定傘歯車(63S)及び特定出力軸(2S)の支持構造の小型化を図り易い。したがって、傘歯車式の差動歯車装置(4)を備えた構成において、車両用駆動装置(100)の小型化を図り易い。
前記差動ケース(5)は、筒状に形成されて前記筒状軸部(633)を前記径方向(R)の外側(R2)から覆うように配置された差動ケース筒状部(51)を備え、
前記筒状軸部(633)の外周面と前記差動ケース筒状部(51)の内周面との間に、前記径方向(R)の隙間である第1クリアランス(C1)が設けられていると好適である。
複数の前記第1傘歯車(62)のそれぞれの歯面と前記特定傘歯車(63S)の歯面との間に、前記径方向(R)の隙間である第2クリアランス(C2)が設けられ、
前記第1クリアランス(C1)は、前記第2クリアランス(C2)よりも大きいと好適である。
前記外側ケース(9)は、筒状に形成されて前記筒状軸部(633)を前記径方向(R)の外側(R2)から覆うように配置された外側ケース筒状部(915)を更に備え、
前記筒状軸部(633)の外周面と前記外側ケース筒状部(915)の内周面との間を油密状にシールするシール部材(72)が設けられ、
前記シール部材(72)は、前記径方向(R)に沿う径方向視で、前記被係合部(6a)と重複するように配置されていると好適である。
前記外側ケース(9)は、前記差動ケース筒状部(51)に対して前記径方向(R)の外側(R2)に配置された外側支持部(914)を備え、
前記外側支持部(914)と前記差動ケース筒状部(51)と前記被係合部(6a)とが、前記径方向(R)に沿う径方向視で互いに重複するように配置されていると好適である。
Claims (5)
- 駆動力源に駆動連結される入力部材と、
それぞれが車輪に駆動連結される一対の出力軸と、
前記入力部材の回転を減速する減速機と、
前記減速機を介して伝達される前記入力部材の回転を一対の前記出力軸に分配する差動歯車装置と、を備えた車両用駆動装置であって、
一対の前記出力軸の回転軸心である出力回転軸心に沿う方向を軸方向とし、前記軸方向の一方側を軸方向第1側とし、前記軸方向の他方側を軸方向第2側とし、前記出力回転軸心に直交する方向を径方向とし、前記出力回転軸心を周回する方向を周方向として、
前記差動歯車装置は、差動ケースと、前記差動ケースに収容された差動歯車機構と、を備え、
前記差動歯車機構は、前記径方向に沿って延在するように形成された軸部材と、前記軸部材によって回転自在に支持されていると共に前記周方向に分かれて配置された複数の第1傘歯車と、前記軸部材に対して前記軸方向の両側に分かれて配置されて複数の前記第1傘歯車に噛み合う一対の第2傘歯車と、を備え、
一対の前記第2傘歯車は、それぞれ一対の前記出力軸と一体的に回転するように連結され、
一対の前記第2傘歯車のうち、前記軸部材に対して前記軸方向第2側に配置された方を特定傘歯車とし、一対の前記出力軸のうち、前記特定傘歯車と一体的に回転する方を特定出力軸として、
前記特定出力軸に設けられた係合部と、前記特定傘歯車に設けられた被係合部とが、前記特定出力軸と前記特定傘歯車との前記周方向及び前記径方向の相対移動を規制するように、互いに係合され、
前記特定傘歯車は、前記差動ケースに対して前記軸方向に支持されているが、前記径方向に支持されていない、車両用駆動装置。 - 前記特定傘歯車は、複数の前記第1傘歯車に噛み合う傘歯部と、前記傘歯部と一体的に形成されて前記傘歯部を支持する傘歯支持部と、前記傘歯支持部から前記軸方向第2側に延出する筒状に形成された筒状軸部と、を備え、
前記差動ケースは、筒状に形成されて前記筒状軸部を前記径方向の外側から覆うように配置された差動ケース筒状部を備え、
前記筒状軸部の外周面と前記差動ケース筒状部の内周面との間に、前記径方向の隙間である第1クリアランスが設けられている、請求項1に記載の車両用駆動装置。 - 複数の前記第1傘歯車のそれぞれの歯面と前記特定傘歯車の歯面との間に、前記径方向の隙間である第2クリアランスが設けられ、
前記第1クリアランスは、前記第2クリアランスよりも大きい、請求項2に記載の車両用駆動装置。 - 前記入力部材、前記減速機、及び前記差動歯車装置を収容する外側ケースを更に備え、
前記外側ケースは、筒状に形成されて前記筒状軸部を前記径方向の外側から覆うように配置された外側ケース筒状部を更に備え、
前記筒状軸部の外周面と前記外側ケース筒状部の内周面との間を油密状にシールするシール部材が設けられ、
前記シール部材は、前記径方向に沿う径方向視で、前記被係合部と重複するように配置されている、請求項2又は3に記載の車両用駆動装置。 - 前記入力部材、前記減速機、及び前記差動歯車装置を収容する外側ケースを更に備え、
前記外側ケースは、前記差動ケース筒状部に対して前記径方向の外側に配置された外側支持部を備え、
前記外側支持部と前記差動ケース筒状部と前記被係合部とが、前記径方向に沿う径方向視で互いに重複するように配置されている、請求項2又は3に記載の車両用駆動装置。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23852456.5A EP4502425A4 (en) | 2022-08-12 | 2023-08-02 | VEHICLE DRIVE DEVICE |
| JP2024540417A JP7711849B2 (ja) | 2022-08-12 | 2023-08-02 | 車両用駆動装置 |
| CN202380049078.XA CN119404028A (zh) | 2022-08-12 | 2023-08-02 | 车用驱动装置 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-128806 | 2022-08-12 | ||
| JP2022128806 | 2022-08-12 |
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| Publication Number | Publication Date |
|---|---|
| WO2024034489A1 true WO2024034489A1 (ja) | 2024-02-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/028267 Ceased WO2024034489A1 (ja) | 2022-08-12 | 2023-08-02 | 車両用駆動装置 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4502425A4 (ja) |
| JP (1) | JP7711849B2 (ja) |
| CN (1) | CN119404028A (ja) |
| WO (1) | WO2024034489A1 (ja) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10213209A (ja) * | 1997-01-30 | 1998-08-11 | Aisin Aw Co Ltd | 自動変速機 |
| WO2019074120A1 (ja) * | 2017-10-13 | 2019-04-18 | アイシン・エィ・ダブリュ株式会社 | 車両用駆動装置 |
| JP2021107737A (ja) | 2019-12-30 | 2021-07-29 | ジヤトコ株式会社 | 動力伝達装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4778648B2 (ja) * | 2001-09-14 | 2011-09-21 | Gknドライブラインジャパン株式会社 | 電動モータ用動力伝達装置及びその組み付け方法 |
| EP4428399A4 (en) * | 2022-03-25 | 2025-04-23 | Aisin Corporation | VEHICLE DRIVE DEVICE |
-
2023
- 2023-08-02 EP EP23852456.5A patent/EP4502425A4/en active Pending
- 2023-08-02 JP JP2024540417A patent/JP7711849B2/ja active Active
- 2023-08-02 CN CN202380049078.XA patent/CN119404028A/zh active Pending
- 2023-08-02 WO PCT/JP2023/028267 patent/WO2024034489A1/ja not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10213209A (ja) * | 1997-01-30 | 1998-08-11 | Aisin Aw Co Ltd | 自動変速機 |
| WO2019074120A1 (ja) * | 2017-10-13 | 2019-04-18 | アイシン・エィ・ダブリュ株式会社 | 車両用駆動装置 |
| JP2021107737A (ja) | 2019-12-30 | 2021-07-29 | ジヤトコ株式会社 | 動力伝達装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4502425A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7711849B2 (ja) | 2025-07-23 |
| CN119404028A (zh) | 2025-02-07 |
| EP4502425A4 (en) | 2025-09-03 |
| EP4502425A1 (en) | 2025-02-05 |
| JPWO2024034489A1 (ja) | 2024-02-15 |
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