JP2021160466A - Vehicle drive device - Google Patents

Abstract

To realize a vehicle drive device capable of ensuring versatility by appropriately configuring a return oil path for returning oil, which has been supplied to each of a transmission and a rotary electric machine, to each oil pump when equipped with oil pumps corresponding to each of the transmission and the rotary electric machine.SOLUTION: A first case part 41 comprises: a case body part 45 that has an opening 45a formed at a lower part thereof; and a receiving member 46 that is attached to the case body part 45 so as to close the opening 45a and forms an oil storage part 30 in a first chamber S1. A first pump supplies oil sucked from the oil storage part 30 to a transmission 4, and a second pump P2 supplies the oil sucked from the oil storage part 30 to a rotary electric machine 6. The oil supplied to the transmission 4 returns to the oil storage part 30 through the inside of the first chamber S1, and the oil supplied to the rotary electric machine 6 returns from the second chamber S2 to the oil storage part 30 through a communication hole formed on a partition wall 43.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle drive device including a transmission and a rotary electric machine.

An example of a vehicle drive device as described above is disclosed in US Patent Application Publication No. 2008/202829 (Patent Document 1). Hereinafter, the reference numerals shown in parentheses in the description of the background technology are those of Patent Document 1. In FIGS. 1 to 3 of Patent Document 1, the transmission (32) and the rotary electric machine (34) are axially connected to the power transmission path connecting the internal combustion engine and the drive shaft (36) from the side of the internal combustion engine. Arranged along the order of description, the configuration in which these are housed in a case is disclosed.

U.S. Patent Application Publication No. 2008/202829

In the vehicle drive device as described above, it is necessary to supply oil to the transmission to operate the transmission, lubricate and cool each part, and also supply oil to the rotary electric machine. It is necessary to lubricate and cool each part. Here, since the amount of oil and oil supplied to the transmission is often different from the amount of oil and oil supplied to the rotary electric machine, it may be desirable to provide an oil pump corresponding to each. In this way, when the oil pumps corresponding to the transmission and the rotary electric machine are provided, the return oil path for returning the oil after supplying to each oil pump must be appropriately configured. , The structure for forming the return route may become large or complicated. In such a case, the change from the existing vehicle in which only the internal combustion engine is used as the driving force source for the wheels becomes large, and the versatility of the vehicle driving device is lowered. However, Patent Document 1 does not describe any oil supply path for the transmission and the rotary electric machine and the return oil path after the supply.

Therefore, when an oil pump corresponding to each of the transmission and the rotary electric machine is provided, the return oil path for returning the oil after being supplied to each of the transmission and the rotary electric machine to each oil pump is appropriate. It is desired to realize a vehicle drive device that can ensure versatility by configuring the above.

The vehicle drive device according to the present disclosure is provided in a first power transmission path connecting an input member that is driven and connected to an internal combustion engine, an output member that is driven and connected to wheels, and the input member and the output member. A transmission that shifts the rotation transmitted from the input member side and transmits the rotation to the shift output member, and a second power transmission path on the output member side of the shift output member in the first power transmission path. From the rotary electric machine capable of transmitting the driving force via the rotary electric machine, the case accommodating the transmission and the rotary electric machine, the first pump driven by the power transmitted through the first power transmission path, and the first power transmission path. A second pump driven by an independent power source is provided, and the rotary electric machine is arranged on the side of the output member with respect to the transmission in the axial direction and coaxially with the speed change output member, and the case. Refers to a first case portion that forms a first chamber in which the transmission is housed, a second case portion that is joined to the first case portion and forms a second chamber in which the rotary electric machine is housed, and the above. A partition wall for partitioning the first chamber and the second chamber is provided, and a communication hole for communicating the first chamber and the second chamber is formed in the partition wall, and the first case portion is formed with a communication hole. The first pump includes a case main body having an opening formed in a lower portion and a receiving member attached to the case main body so as to close the opening and forming an oil storage portion in the first chamber. The oil sucked from the oil storage unit is supplied to the transmission, the second pump supplies the oil sucked from the oil storage unit to the rotary electric machine, and the oil supplied to the transmission is the first. It returns to the oil storage unit through the inside of the chamber, and the oil supplied to the rotary electric machine returns to the oil storage unit from the second chamber through the communication hole.

According to this configuration, in a vehicle drive device coaxially equipped with a transmission and a rotary electric machine, oil can be supplied to the transmission by the first pump and oil can be supplied to the rotary electric machine by the second pump. , The transmission and the rotary electric machine can be appropriately supplied with oil. Further, a communication hole is formed in the partition wall that separates the first chamber in which the transmission is housed and the second room in which the rotary electric machine is housed, and the oil supplied to the transmission passes through the inside of the first chamber. It is configured to return to the oil storage unit formed in the first chamber, and the oil supplied to the rotary electric machine returns to the oil storage unit from the second chamber through the communication hole. Therefore, it is not necessary to provide an oil storage unit for each of the first pump and the second pump, and one oil storage unit formed in the first chamber can be shared by the first pump and the second pump.

As a result, the second case portion in which the rotary electric machine is housed can have a simple configuration that does not need to include an oil storage portion. On the other hand, even in an existing vehicle in which only an internal combustion engine is used as a driving force source for wheels, an oil storage unit for storing oil to be supplied to the transmission is usually provided in a case where the transmission is housed. Therefore, according to this configuration, the configuration of the first case portion in which the transmission is housed can be similar to the case of the transmission of the existing vehicle, or the case of the transmission of the existing vehicle can be used as it is. As described above, according to this configuration, the second case portion in which the rotary electric machine, which is an additional element for the existing vehicle, is housed can be simplified, and the first case in which the transmission is housed can be simplified. Since the configuration of the unit can be similar to that of an existing vehicle, it can be easily mounted on various vehicles, and a highly versatile vehicle drive device can be realized.

Further features and advantages of the vehicle drive will be clarified from the following description of embodiments described with reference to the drawings.

Schematic diagram showing a schematic configuration of a vehicle drive device A cross-sectional view showing a part of a vehicle drive device in a simplified manner. Partially enlarged view of FIG. Axial view of the first case from the first side in the axial direction Axial view of the second case from the second side in the axial direction Schematic diagram showing a schematic configuration of a hydraulic circuit

An embodiment of a vehicle drive device will be described with reference to the drawings. In the following description, unless otherwise specified, the "axial direction L", "diameter direction R", and "circumferential direction" are the rotation axis A (virtual axis, drawing) of the rotary electric machine 6 described later. 3) is defined as a reference. The rotary electric machine 6 (specifically, the rotor 60 described later) and the rotary member (specifically, the speed change output member 23 and the like described later) arranged coaxially with the rotary electric machine 6 rotate around the rotation axis A. Then, one side of the axial direction L is defined as "the first side L1 in the axial direction", and the other side of the axial direction L (the side opposite to the first side L1 in the axial direction L1 in the axial direction) is "the second side L2 in the axial direction". And. Further, the outer side of the radial direction R is referred to as "diameter outer side R1", and the inner side of the radial direction R is referred to as "diameter inner side R2" (see FIG. 3). The direction of each member in the following description represents the direction in which they are assembled to the vehicle drive device 1. The terms related to the dimensions, the arrangement direction, the arrangement position, and the like for each member are concepts including a state in which there is a difference due to an error (an error to an extent that can be tolerated in manufacturing).

Further, in the following description, the vertical direction V means the vertical direction in the used state of the vehicle drive device 1, that is, the vertical direction when the vehicle drive device 1 is arranged in the direction in the used state. Since the vehicle drive device 1 is mounted on the vehicle and used, the vertical direction V is the vertical direction when the vehicle drive device 1 is mounted on the vehicle, more specifically, the vehicle drive device 1 is used. It coincides with the vertical direction when the vehicle is mounted on a vehicle and the vehicle is stopped on a flat road (road along a horizontal plane). The upper side V1 (upper side) means the upper side (upper side) in the vertical direction V, and the lower side V2 (lower side) means the lower side (lower side) in the vertical direction V.

As used herein, the term "driving connection" refers to a state in which two rotating elements are connected so as to be able to transmit a driving force (synonymous with torque), and the two rotating elements are connected so as to rotate integrally. This includes 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 (for example, shafts, gear mechanisms, belts, chains, etc.) that transmit rotation at the same speed or at different speeds. The transmission member may include an engaging device (for example, a friction engaging device, a meshing type engaging device, etc.) that selectively transmits rotation and driving force.

Further, in the present specification, "rotary electric machine" is used as a concept including any of a motor (motor), a generator (generator), and, if necessary, a motor / generator that functions as both a motor and a generator. There is. Further, in the present specification, with respect to the arrangement of the two members, "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 at least a part of the region where the virtual straight line intersects both of the two members. Further, in the present specification, with respect to the arrangement of the two members, "the arrangement areas in the specific directions overlap" means that at least the arrangement area of the other member in the specific direction is within the arrangement area of one member in the specific direction. Means that some are included.

As shown in FIGS. 1 and 2, the vehicle drive device 1 includes an input member 20 that is driven and connected to the internal combustion engine 2, an output member 27 that is driven and connected to the wheels 3, a transmission 4, and a rotary electric machine 6. And a case 40 for accommodating the transmission 4 and the rotary electric machine 6. The vehicle drive device 1 transmits the output torque of one or both of the internal combustion engine 2 and the rotary electric machine 6 to the wheels 3 via the output member 27 to drive the vehicle.

As shown in FIG. 1, in the present embodiment, in the vehicle on which the vehicle drive device 1 is mounted, the rotation transmitted from the output member 27 side is distributed to the first output member 21A and the second output member 21B. A transfer 84 is provided. The first output member 21A is drive-connected to the rear wheel 3A, which is the rear wheel 3 of the vehicle, and the second output member 21B is drive-connected to the front wheel 3B, which is the front wheel 3 of the vehicle. In the example shown in FIG. 1, the first output member 21A is drive-connected to the two left and right rear wheels 3A via the rear wheel differential gear mechanism 5A, and the second output member 21B is the front wheel differential gear mechanism 5B. It is driven and connected to the two front wheels 3B on the left and right via. That is, in the present embodiment, the vehicle drive device 1 is a four-wheel drive system drive device that drives four wheels 3 (two left and right rear wheels 3A and two left and right front wheels 3B). As described above, in the present embodiment, the output member 27 is drive-connected to the rear wheels 3A and the front wheels 3B, and in the example shown in FIG. 1, the output member 27 is drive-connected to the two left and right rear wheels 3A and the two left and right front wheels 3B. Specifically, the output member 27 is drive-connected to the two left and right rear wheels 3A via the transfer 84, the first output member 21A, and the rear wheel differential gear mechanism 5A, and the transfer 84 and the second output. It is driven and connected to the two left and right front wheels 3B via the member 21B and the front wheel differential gear mechanism 5B.

The first output member 21A is connected to the rear wheel differential gear mechanism 5A via, for example, a flexible coupling or a propeller shaft, and the second output member 21B is connected to the rear wheel differential gear mechanism 5A via, for example, a flexible coupling or a propeller shaft. It is connected to the front wheel differential gear mechanism 5B. The rear wheel differential gear mechanism 5A distributes the driving force transmitted from the side of the first output member 21A to the left and right two rear wheels 3A, and the front wheel differential gear mechanism 5B is on the side of the second output member 21B. The driving force transmitted from the vehicle is distributed to the two front wheels 3B on the left and right. The rear wheel differential gear mechanism 5A and the front wheel differential gear mechanism 5B are, for example, bevel gear type or planetary gear type differential gear mechanisms.

The input member 20 is driven and connected to an output member (crankshaft or the like) of the internal combustion engine 2. The input member 20 is connected so as to rotate integrally with the output member of the internal combustion engine 2, for example. In the present embodiment, the input member 20 is arranged coaxially with the shift output member 23 on the second side L2 in the axial direction with respect to the shift output member 23. The internal combustion engine 2 is a prime mover (for example, a gasoline engine, a diesel engine, etc.) that is driven by combustion of fuel inside the engine to extract power.

The transmission 4 is provided in the first power transmission path T1 connecting the input member 20 and the output member 27. The transmission 4 shifts the rotation transmitted from the input member 20 side and transmits the rotation to the shift output member 23. Specifically, the transmission 4 shifts the rotation transmitted from the input member 20 side to the shift input member 22 and transmits it to the shift output member 23. The speed change input member 22 is a member for inputting rotation from the input member 20 side to the transmission 4, and the speed change output member 23 is a member for outputting rotation from the transmission 4 to the output member 27 side. be. In the present embodiment, the shift input member 22 is arranged coaxially with the shift output member 23 on the second side L2 in the axial direction with respect to the shift output member 23. The transmission 4 is configured so that the gear ratio, which is the ratio of the rotational speed of the gear shifting input member 22 to the rotational speed of the gear shifting output member 23, can be changed stepwise or steplessly, and the rotation of the gear shifting input member 22 can be changed at present. The speed is changed according to the speed change ratio of, and the speed is transmitted to the speed change output member 23.

In the present embodiment, the transmission 4 is configured so that the gear ratio can be changed according to the flood pressure supplied from the hydraulic control device 8 (see FIG. 2). Therefore, the transmission 4 includes, for example, a hydraulically driven type shifting engagement device. Although the details will be described later, the vehicle drive device 1 includes a first pump P1 that supplies the oil sucked from the oil storage unit 30 to the transmission 4, and the oil discharged from the first pump P1 is hydraulically controlled. It is supplied to the transmission 4 via the device 8. The oil supplied from the hydraulic control device 8 to the transmission 4 is used for lubrication and operation of the transmission 4. That is, the hydraulic control device 8 supplies the oil discharged from the first pump P1 to the transmission 4 (specifically, the gear shifting engaging device) as hydraulic oil, and at the same time, the transmission 4 (specifically). Is supplied as lubricating oil to parts that require lubrication such as gears and bearings.

In the present embodiment, a torque converter 7 (an example of a fluid coupling) is provided in the power transmission path between the input member 20 and the speed change input member 22. A damper may be provided in addition to the torque converter 7 in the power transmission path between the input member 20 and the speed change input member 22, or a damper may be provided in place of the torque converter 7. Further, the torque converter 7 is not provided in the power transmission path between the input member 20 and the shift input member 22, and the input member 20 and the shift input member 22 are connected so as to rotate integrally, or the input. The member 20 and the shift input member 22 may be integrally formed (that is, the input member 20 functions as a shift input member). Further, for example, a second rotary electric machine that functions as a driving force source for the wheels 3 is provided separately from the rotary electric machine 6, and the input member 20 is provided in the power transmission path between the input member 20 and the speed change input member 22. A power distribution mechanism (planetary gear mechanism or the like) for distributing the torque transmitted from the side of the second rotary electric machine and the speed change input member 22 may be provided. When the torque converter 7 is provided in the power transmission path between the input member 20 and the shift input member 22, this power distribution mechanism is, for example, in the power transmission path between the torque converter 7 and the shift input member 22. It will be provided.

The rotary electric machine 6 includes a stator 61 fixed to a case 40 (specifically, a second case portion 42 described later) and a rotor 60 rotatably supported by the stator 61. The stator 61 includes a stator core 62 and a coil 63 wound around the stator core 62. The stator 61 includes a first coil end portion 64A projecting from the stator core 62 to the first side L1 in the axial direction, and a second coil end portion 64B projecting from the stator core 62 to the second side L2 in the axial direction. The portion of the coil 63 protruding from the stator core 62 to the first side L1 in the axial direction forms the first coil end portion 64A, and the portion of the coil 63 protruding from the stator core 62 to the second side L2 in the axial direction is the second coil end portion 64B. Is forming. In the present embodiment, the rotary electric machine 6 is an inner rotor type rotary electric machine, and the rotor 60 is a radial inner R2 with respect to the stator 61 and overlaps with the stator 61 in a radial direction along the radial direction R. Is located in. The rotor 60 is connected so as to rotate integrally with the rotor shaft 25. The rotor shaft 25 is formed in a tubular shape (specifically, a cylindrical shape) extending in the axial direction L. Here, the rotor shaft 25 is arranged so as to penetrate the radial inner side R2 of the rotor 60 in the axial direction L, and the rotor 60 is fixed to the outer peripheral surface of the rotor shaft 25.

The rotary electric machine 6 is arranged coaxially with the transmission output member 23 on the side of the output member 27 with respect to the transmission 4 in the axial direction L (that is, on the first side L1 in the axial direction with respect to the transmission 4). .. The rotary electric machine 6 can transmit a driving force to the output member 27 side of the speed change output member 23 in the first power transmission path T1 connecting the input member 20 and the output member 27 via the second power transmission path T2. It is provided. In the present embodiment, the driving force of the rotary electric machine 6 is transmitted to the intermediate member 24 provided in the power transmission path between the speed change output member 23 and the output member 27 via the second power transmission path T2. In the present embodiment, the second power transmission path T2 is a power transmission path connecting the rotary electric machine 6 and the intermediate member 24. In the present embodiment, the intermediate member 24 is a shaft member formed in a tubular shape (specifically, a cylindrical shape) extending in the axial direction L. In the present embodiment, the intermediate member 24 is connected so as to rotate integrally with the speed change output member 23, and is also connected so as to rotate integrally with the output member 27. That is, the intermediate member 24 connects the speed change output member 23 and the output member 27 so as to rotate integrally with each other.

In the example shown in FIG. 3, in the connecting portion between the intermediate member 24 and the speed change output member 23, the spline teeth formed on the inner peripheral surface of the end portion of the second side L2 in the axial direction of the intermediate member 24 and the speed change output member 23. The spline teeth formed on the outer peripheral surface of the end portion of the first side L1 in the axial direction in the above direction are spline-engaged. Further, in the example shown in FIG. 3, in the connecting portion between the intermediate member 24 and the output member 27, the spline teeth formed on the outer peripheral surface of the end portion of the first side L1 in the axial direction of the intermediate member 24 and the connecting member 26. The spline teeth formed on the inner peripheral surface of the portion of the second side L2 in the axial direction are spline-engaged, and the spline formed on the outer peripheral surface of the end portion of the second side L2 in the axial direction in the output member 27. The teeth and the spline teeth formed on the inner peripheral surface of the portion of the connecting member 26 on the first side L1 in the axial direction are spline-engaged. That is, in the example shown in FIG. 3, the intermediate member 24 is connected to the output member 27 via the connecting member 26.

The transfer 84 distributes the rotation transmitted from the output member 27 side to the first output member 21A and the second output member 21B. That is, the transfer 84 includes a distribution unit 200 that distributes the rotation transmitted from the output member 27 side to the first output member 21A and the second output member 21B. Here, "distributing the rotation to the first output member 21A and the second output member 21B" means that the distribution ratio to one of the first output member 21A and the second output member 21B is 100 [%], and the second It is used as a concept including the case where the distribution ratio of the 1 output member 21A and the 2nd output member 21B to the other is 0 [%]. In the example shown in FIG. 1, the output member 27 functions as an input member of the transfer 84. As the distribution unit 200, any type of distribution unit such as a part-time type, a full-time type, and a composite type thereof can be adopted. That is, the distribution unit 200 may include a mechanism (center differential mechanism, differential limiting mechanism, etc.) not shown in FIG.

In the example shown in FIG. 1, a part-time type distribution unit is adopted as the distribution unit 200. That is, the distribution unit 200 shown in FIG. 1 drives both the two-wheel drive state in which only one of the rear wheels 3A and the front wheels 3B (here, only the rear wheels 3A) is driven, and the rear wheels 3A and the front wheels 3B 4 It is configured to switch between the wheel drive state and the wheel drive state. Specifically, the distribution unit 200 shown in FIG. 1 includes a second sleeve member 201 that is movable in the axial direction L, and a winding transmission mechanism 202. The winding transmission mechanism 202 includes a first rotating body 202A (for example, a sprocket), a second rotating body 202B (for example, a sprocket) arranged on a different axis from the first rotating body 202A, the first rotating body 202A, and the first rotating body 202A. It includes a transmission member 202C (for example, a chain) wound around the second rotating body 202B. In the example shown in FIG. 1, the rotation of the output member 27 after shifting by the transmission unit 100, which will be described later, is transmitted to the transfer intermediate member 28, and the distribution unit 200 transmits the rotation of the transfer intermediate member 28 to the first output member 21A. And the second output member 21B. In the example shown in FIG. 1, the transfer intermediate member 28 is connected to the first output member 21A so as to rotate integrally.

As shown in FIG. 1, when the second sleeve member 201 is located at the two-wheel drive position Z3, the first rotating body 202A is separated from the transfer intermediate member 28 (in other words, the connection with the transfer intermediate member 28 is released. Will be). On the other hand, in the state where the second sleeve member 201 is located at the four-wheel drive position Z4, the first rotating body 202A is connected to the transfer intermediate member 28 (here, the transfer intermediate member is connected so as to rotate integrally). 28 is connected to the second output member 21B via the winding transmission mechanism 202. The second rotating body 202B is connected so as to rotate integrally with the second output member 21B. Therefore, the two-wheel drive state is realized when the second sleeve member 201 is located at the two-wheel drive position Z3, and the four-wheel drive state is realized when the second sleeve member 201 is located at the four-wheel drive position Z4. Will be done.

In the present embodiment, the transfer 84 can change the ratio of the rotation speed transmitted from the output member 27 side to the rotation speed distributed to the first output member 21A and the second output member 21B in a stepwise manner. It is configured in. This ratio can be, for example, the ratio of the rotation speed of the output member 27 to the rotation speed of the first output member 21A. In the example shown in FIG. 1, the transfer 84 includes a transmission unit 100 (sub transmission) in the power transmission path between the output member 27 and the distribution unit 200. The transmission unit 100 shifts the rotation of the output member 27 and transmits it to the transfer intermediate member 28. Therefore, the above ratio can be the ratio of the rotation speed of the output member 27 to the rotation speed of the transfer intermediate member 28. As described above, in the present embodiment, the transfer 84 includes the transmission unit 100 and the distribution unit 200 connected in series, but the transfer 84 includes a mechanism in which the transmission unit 100 and the distribution unit 200 are combined. It can also be configured.

In the example shown in FIG. 1, the speed change unit 100 includes a first sleeve member 101 that is movable in the axial direction L, and a speed change mechanism 102 whose gear ratio is switched according to the position of the first sleeve member 101 in the axial direction L. It has. The transmission mechanism 102 is configured by using a single pinion type planetary gear mechanism including a sun gear connected to an output member 27, a carrier, and a ring gear fixed to a case 40 or another non-rotating member. There is. Then, as shown in FIG. 1, when the first sleeve member 101 is located at the first position Z1, the sun gear of the planetary gear mechanism constituting the speed change mechanism 102 rotates integrally with the transfer intermediate member 28. In a state where the first sleeve member 101 is connected and is located at the second position Z2, the carrier of the planetary gear mechanism constituting the transmission mechanism 102 is connected so as to rotate integrally with the transfer intermediate member 28. Therefore, in the state where the first sleeve member 101 is located at the first position Z1, the rotation of the output member 27 is transmitted to the transfer intermediate member 28 at the same rotational speed, and the first sleeve member 101 is located at the second position Z2. In the state, the rotation of the output member 27 is decelerated and transmitted to the transfer intermediate member 28.

As described above, in the example shown in FIG. 1, the transfer 84 determines the power transmission state in the transfer 84 as the ratio of the rotation speed of the output member 27 to the rotation speed of the transfer intermediate member 28 (or the ratio of the rotation speed of the first output member 21A). It is configured to switch between a state in which the ratio of the rotation speed of the output member 27 to the rotation speed is relatively small (high gear state) and a state in which the ratio is relatively large (low gear state). Unlike such a configuration, the transfer 84 may have a configuration in which the above ratio cannot be changed (for example, the transfer 84 does not include the transmission unit 100).

The transfer 84 is arranged on the first side L1 in the axial direction with respect to the transmission 4. The output member 27 is arranged coaxially with the speed change output member 23 on the first side L1 in the axial direction with respect to the transmission 4. The rotary electric machine 6 is arranged coaxially with the speed change output member 23 between the transmission 4 and the transfer 84 in the axial direction L. The intermediate member 24 is arranged coaxially with the speed change output member 23 on the first side L1 in the axial direction with respect to the transmission 4. In the present embodiment, as shown in FIG. 3, the outer peripheral surface of the intermediate member 24 is formed to have a diameter smaller than the inner peripheral surface of the rotor shaft 25, and the intermediate member 24 is radially inside the rotor shaft 25. It is R2 and is arranged at a position overlapping the rotor shaft 25 in the radial direction. In the present embodiment, the vehicle drive device 1 is mounted on the vehicle with the second axial side L2 facing the front side of the vehicle body.

In the present embodiment, the vehicle drive device 1 includes a speed reducer 83. The speed reducer 83 is provided in the second power transmission path T2, decelerates the rotation transmitted from the side of the rotary electric machine 6 and transmits the rotation to the side of the first power transmission path T1. In the present embodiment, the speed reducer 83 is arranged coaxially with the speed change output member 23 between the transmission 4 and the rotary electric machine 6 in the axial direction L. In the present embodiment, the second power transmission path T2 connecting the rotary electric machine 6 and the intermediate member 24 is not provided with a transmission mechanism other than the speed reducer 83, and the rotation of the rotary electric machine 6 is carried out by the gear of the speed reducer 83. It is decelerated according to the ratio and transmitted to the intermediate member 24. Further, in the present embodiment, the second power transmission path T2 is not provided with an engaging device that selectively connects the rotary electric machine 6 and the intermediate member 24, and the rotary electric machine 6 is always connected to the intermediate member 24. It rotates in conjunction.

In the present embodiment, the speed reducer 83 includes a sun gear 11 connected to the rotary electric machine 6, a carrier 12 connected to the intermediate member 24, and a case 40 (specifically, a second case portion 42 described later, more specifically. Specifically, it is configured by using a planetary gear mechanism 10 provided with a ring gear 13 fixed to a support member 44). The carrier 12 rotatably supports a pinion gear 14 that meshes with both the sun gear 11 and the ring gear 13. As shown in FIG. 3, the pinion gear 14 is supported by a pinion shaft 15 held by the carrier 12. In the present embodiment, the sun gear 11 is connected so as to rotate integrally with the rotary electric machine 6, and the carrier 12 is connected so as to rotate integrally with the intermediate member 24. The planetary gear mechanism 10 is a single pinion type planetary gear mechanism. Therefore, the rotation input from the rotary electric machine 6 to the sun gear 11 is decelerated according to the gear ratio of the planetary gear mechanism 10 and output from the carrier 12 to the intermediate member 24. The vehicle drive device 1 may not be provided with the speed reducer 83 (for example, the rotation of the rotary electric machine 6 is transmitted to the intermediate member 24 at the same rotation speed).

As shown in FIG. 6, the vehicle drive device 1 includes a first pump P1 and a second pump P2. The first pump P1 is a pump driven by power transmitted through the first power transmission path T1. That is, the first pump P1 is a so-called mechanical pump. In the present embodiment, the first pump P1 is configured to be driven by the rotation of the input member 20. That is, the first pump P1 is driven by the internal combustion engine 2. The second pump P2 is a pump driven by a driving force source M (see FIG. 2) independent of the first power transmission path T1. Since the second power transmission path T2 is a power transmission path connected to the first power transmission path T1, the driving force source M independent of the first power transmission path T1 is also independent of the second power transmission path T2. ing. In the present embodiment, the driving force source M is an electric motor (for example, an AC motor driven by a plurality of phases of AC power such as three phases), and the second pump P2 is a so-called electric pump. As shown in FIG. 6, in the present embodiment, the vehicle drive device 1 further includes a third pump P3 driven by a drive force source (not shown) independent of the first power transmission path T1. .. In the present embodiment, the driving force source for driving the third pump P3 is an electric motor (for example, an AC motor driven by a plurality of phases of AC power such as three phases). As the first pump P1, the second pump P2, and the third pump P3, for example, an internal gear pump, an external gear pump, a vane pump, or the like can be used.

The first pump P1 supplies the oil sucked from the oil storage unit 30 to the transmission 4, and the second pump P2 supplies the oil sucked from the oil storage unit 30 to the rotary electric machine 6. That is, in the vehicle drive device 1, the oil inside the case 40 is shared between the transmission 4 and the rotary electric machine 6. In the present embodiment, the oil discharged from the first pump P1 is supplied to the transmission 4 via the hydraulic control device 8, and the oil discharged from the second pump P2 rotates without going through the hydraulic control device 8. It is supplied to the electric machine 6. Although the details will be described later, the rotary electric machine 6 is cooled by the oil supplied from the second pump P2 to the rotary electric machine 6.

The hydraulic control device 8 includes a solenoid valve, a switching valve, a pressure regulating valve, and the like. The oil pressure control device 8 controls the oil pressure of the oil discharged from the first pump P1 and supplies it to each part of the transmission 4. For example, the hydraulic control device 8 generates a line pressure and supplies oil of the line pressure to a hydraulic drive unit (hydraulic servo mechanism or the like) of a speed change engaging device included in the transmission 4. The engagement state of the speed change engaging device is controlled according to the oil pressure (operating oil pressure) supplied to the hydraulic drive unit of the speed change engaging device. Further, the hydraulic control device 8 uses, for example, the oil of the lubricating pressure that is secondarily generated when the line pressure is generated, at a portion requiring cooling in the transmission 4 (for example, the friction plate of the gear shifting engaging device), or the transmission 4 Supply to parts that require lubrication (for example, gears and bearings). In FIG. 6, regarding the oil flow between the hydraulic control device 8 and the transmission 4, the flow of hydraulic oil (hydraulic oil) is omitted, and the flow of lubricating oil (lubricating cooling oil) is simplified. Shown. As shown in FIG. 6, the lubricating cooling oil is supplied from the hydraulic control device 8 to the transmission 4 via an oil cooler 9 which is a heat exchanger for cooling the oil.

As described above, in the present embodiment, the vehicle drive device 1 includes the third pump P3, and the third pump P3 supplies the oil sucked from the oil storage unit 30 to the transmission 4. FIG. 6 illustrates a mode in which the discharge oil passage connected to the discharge port of the first pump P1 and the discharge oil passage connected to the discharge port of the third pump P3 merge and are connected to the flood control device 8. ing. In FIG. 6, the check valve and the like are omitted. The third pump P3 is driven, for example, when the first pump P1 is stopped or when the rotation speed of the first pump P1 is equal to or less than a specified value. As a result, for example, during the execution of the idle stop control of the internal combustion engine 2 or the execution of the electric traveling mode in which the vehicle is driven only by the driving force of the rotary electric machine 6, the oil pressure required in the transmission 4 (for example, for shifting) The hydraulic pressure for maintaining the engaging pressure of the engaging device at the standby pressure such as the stroke end pressure) can be generated by driving the third pump P3.

The first pump P1 and the second pump P2 suck the oil of the oil storage unit 30 through the strainer that filters the oil. In the present embodiment, a strainer for filtering the oil sucked from the oil storage unit 30 by the first pump P1 and a strainer for filtering the oil sucked from the oil storage unit 30 by the second pump P2 are separately provided. .. Specifically, the first strainer 31 is connected to the first suction port P1a which is the suction port of the first pump P1, and the first strainer 31 is connected to the second suction port P2a which is the suction port of the second pump P2. Is connected to another second strainer 32. That is, the first pump P1 sucks oil from the oil storage unit 30 via the first strainer 31, and the second pump P2 sucks oil from the oil storage unit 30 via the second strainer 32. In the present embodiment, the first strainer 31 is connected to the third suction port P3a, which is the suction port of the third pump P3, and the third pump P3 is oiled from the oil storage unit 30 via the first strainer 31. Inhale. In the present embodiment, the first suction port P1a corresponds to the "suction port of the first pump", and the second suction port P2a corresponds to the "suction port of the second pump".

As shown in FIG. 2, the case 40 has a first case portion 41 forming the first chamber S1 in which the transmission 4 is housed and a second case portion forming the second chamber S2 in which the rotary electric machine 6 is housed. 42 and. The first chamber S1 and the second chamber S2 are arranged adjacent to each other in the axial direction L. The second chamber S2 is arranged adjacent to the first side L1 in the axial direction with respect to the first chamber S1. A part of the first chamber S1 may be formed by the second case portion 42, or a part of the second chamber S2 may be formed by the first case portion 41. In the example shown in FIG. 3, a part of the axial second side L2 in the second chamber S2 is arranged on the axial second side L2 with respect to the joint surface 40a between the first case portion 41 and the second case portion 42. A part of the second side L2 in the axial direction in the second chamber S2 is formed by the first case portion 41.

A device or member other than the transmission 4 may be housed in the first chamber S1, and in the present embodiment, the hydraulic control device 8, the first pump P1 (see FIG. 6), the first strainer 31, and the second. The strainer 32 is housed in the first chamber S1. Specifically, an oil storage unit 30 is formed in the first chamber S1, and the first strainer 31 and the second strainer 32 are arranged in the oil storage unit 30. Further, devices and members other than the rotary electric machine 6 may be housed in the second chamber S2, and in the present embodiment, the speed reducer 83 and the rotation sensor 80 are housed in the second room S2. Although FIGS. 2 and 6 exemplify a form in which the second pump P2 is arranged outside the case 40, for example, the second pump P2 is inside the second case portion 42 (for example, the second chamber). It can also be configured to be arranged in S2). Further, FIG. 6 illustrates a form in which the third pump P3 is arranged inside the first case portion 41 (specifically, the first chamber S1), but the third pump P3 is outside the case 40. It can also be configured to be placed in.

The second case portion 42 is joined to the first case portion 41. Specifically, the second case portion 42 is joined to the first side L1 in the axial direction of the first case portion 41. The first case portion 41 and the second case portion 42 are joined by using, for example, fastening bolts. The intermediate member 24 is connected to the speed change output member 23 in a state where the second case portion 42 is joined to the first case portion 41. In the example shown in FIG. 3, the end of the first side L1 in the axial direction of the shift output member 23 is arranged in the second chamber S2, and the intermediate member 24 is connected to the shift output member 23 in the second chamber S2. ..

In the present embodiment, the second case portion 42 is joined to a transfer case (not shown) which is a case of the transfer 84. Specifically, the second case portion 42 is joined to the second side L2 in the axial direction of the transfer case. The second case portion 42 and the transfer case are joined using, for example, fastening bolts. The intermediate member 24 is connected to the output member 27 in a state where the second case portion 42 is joined to the transfer case.

As shown in FIG. 2, the first case portion 41 is attached to a case main body portion 45 having an opening 45a formed in the lower portion and a case main body portion 45 so as to close the opening 45a, and an oil storage portion is provided in the first chamber S1. It includes a receiving member 46 forming 30 and a receiving member 46. The receiving member 46 is an oil pan that forms a part of the first case portion 41. The receiving member 46 is formed in a tank shape that opens upward. That is, the receiving member 46 includes a bottom surface portion and a peripheral wall portion extending from the periphery of the bottom surface portion to the upper V1. The oil storage unit 30 is a part of the first chamber S1, specifically, a part of the lower V2 in the first chamber S1. For example, the entire portion of the first chamber S1 that may be below the oil level 30a and V2 can be defined as the oil storage portion 30.

The case 40 further includes a partition wall 43 that separates the first chamber S1 and the second chamber S2. The partition wall 43 partitions the first chamber S1 and the second chamber S2 in the axial direction L. In the present specification, the term "compartment wall" is used as a concept including both the singular and the plural, except when the number is specified or when the singular and the plural are distinguished. The partition wall 43 is provided on either one or both of the first case portion 41 and the second case portion 42. As shown in FIGS. 2 and 3, in the present embodiment, the partition wall 43 is provided only in the first case portion 41. That is, in the present embodiment, the case 40 includes one partition wall 43, and the one partition wall 43 is provided in the first case portion 41. When the case 40 includes one partition wall 43, the one partition wall 43 may be provided in the second case portion 42.

Further, for example, the case 40 may be provided with two partition walls 43, one partition wall 43 may be provided in the first case portion 41, and the other partition wall 43 may be provided in the second case portion 42. .. In this case, the first chamber S1 and the second chamber S2 are partitioned by two partition walls 43 arranged in the axial direction L. As will be described later, in the present embodiment, the second case portion 42 includes the support member 44. For example, by providing the partition wall 43 instead of the support member 44, the case 40 includes two partition walls 43. Can be. In this case, a speed reducer 83, which is different from the first chamber S1 and the second chamber S2, is accommodated between the partition wall 43 included in the first case portion 41 and the partition wall 43 included in the second case portion 42. The third chamber is formed.

As shown in FIG. 4, a communication hole 50 that communicates the first chamber S1 and the second chamber S2 is formed in the partition wall 43. The communication hole 50 is formed so as to penetrate the partition wall 43 in the axial direction L. In the example shown in FIG. 4, two communication holes 50 are formed in the partition wall 43. The two communication holes 50 are arranged at different positions in the horizontal direction (left-right direction in FIG. 4) orthogonal to the axial direction L. Specifically, the two communication holes 50 are arranged on opposite sides of the rotation axis A in the horizontal direction. In the present embodiment, the case 40 includes one partition wall 43, but when the case 40 includes a plurality of (for example, two) partition walls 43, communication holes 50 are formed in each of the partition walls 43. ..

As shown briefly in FIG. 6, the oil supplied to the transmission 4 passes through the inside of the first chamber S1 and returns to the oil storage unit 30, and the oil supplied to the rotary electric machine 6 is from the second chamber S2. It returns to the oil storage unit 30 through the communication hole 50. As described above, the transmission 4 is supplied with oil from the first pump P1, and in the present embodiment, the transmission 4 is also supplied with oil from the third pump P3. Since the transmission 4 is arranged in the first chamber S1, the oil supplied to the transmission 4 such as the lubricating cooling oil flows to the lower V2 under the action of gravity and returns to the oil storage unit 30. ..

As described above, oil is supplied to the rotary electric machine 6 from the second pump P2. Since the rotary electric machine 6 is arranged in the second chamber S2, the oil supplied to the rotary electric machine 6 is affected by gravity and heads toward the second bottom portion S2a (see FIG. 5) which is the bottom of the second chamber S2. Flows to the lower V2. Here, the second bottom portion S2a is arranged above the first bottom portion S1a (see FIG. 2), which is the bottom portion of the first chamber S1 (here, the bottom portion of the oil storage portion 30). The communication hole 50 opens to the second bottom S2a on the second chamber S2 side. Therefore, the oil supplied to the rotary electric machine 6 flows from the second bottom portion S2a through the communication hole 50 to the first chamber S1 side, and returns to the oil storage portion 30 formed in the first chamber S1. The communication hole 50 "opens in the second bottom S2a" means that the communication hole 50 opens at a position adjacent to the upper V1 with respect to the bottom surface of the second bottom S2a. As described above, the vehicle drive device 1 includes a return oil passage 72 (see FIG. 6) for returning the oil supplied to the rotary electric machine 6 to the oil storage unit 30, and the return oil passage 72 is the second. The chamber S2 and the first chamber S1 (specifically, the oil storage unit 30) are formed so as to communicate with each other through the communication hole 50. The oil level 30a of the oil storage unit 30 is located below the lowermost part of the communication hole 50 at least when the second pump P2 is driven. In the present embodiment, the first bottom portion S1a corresponds to the "bottom of the oil storage portion", and the second bottom portion S2a corresponds to the "bottom of the second chamber".

As shown in FIGS. 2 and 3, in the present embodiment, the second case portion 42 includes a support member 44 on the second side L2 in the axial direction with respect to the rotary electric machine 6. The support member 44 is a separate member from the peripheral wall portion 47, which is a portion of the second case portion 42 that surrounds the rotary electric machine 6 from the radial outer side R1. The support member 44 is arranged on the inner side R2 in the radial direction with respect to the peripheral wall portion 47, and is integrally connected to the peripheral wall portion 47. The support member 44 is fixed to the peripheral wall portion 47 or a member fixed to the peripheral wall portion 47 by using, for example, a fastening bolt. As shown in FIG. 5, the support member 44 has a notch in V2 below the rotation axis A, which is a portion of the support member 44 that overlaps with the rotary electric machine 6 in the axial direction along the axial direction L. The part 44b is provided. The cutout portion 44b is formed in a part of the circumferential direction with respect to the rotation axis A as a reference. By providing such a notch 44b, an oil passage (passage) for allowing the oil supplied to the rotary electric machine 6 to flow toward the second side L2 in the axial direction to the partition wall 43 in which the communication hole 50 is formed. It is possible to properly secure.

In the present embodiment, the speed reducer 83 is arranged on the second side L2 in the axial direction with respect to the support member 44. Here, the speed reducer 83 is arranged between the support member 44 and the partition wall 43 in the axial direction L, facing the support member 44 and the partition wall 43 in the axial direction L. That is, the speed reducer 83 is housed in the portion of the second side L2 in the axial direction with respect to the support member 44 in the second chamber S2. Further, in the present embodiment, a rotation sensor 80 for detecting the rotation of the rotor 60 is arranged between the rotor 60 and the support member 44 in the axial direction L. In the present embodiment, the rotation sensor 80 is a resolver, and the rotation sensor 80 is a sensor stator fixed to a case 40 (specifically, a second case portion 42, more specifically, a support member 44). It includes a sensor rotor fixed to a rotor shaft 25.

Here, a state in which both the first pump P1 and the second pump P2 are stopped (in the present embodiment, a state in which the third pump P3 is further stopped) is defined as a state in which all pumps are stopped. For example, when the vehicle is stopped, all pumps are stopped. FIG. 2 shows an example of the oil level 30a of the oil storage unit 30 when all pumps are stopped. That is, the oil level 30a shown in FIG. 2 represents the highest oil level 30a in the change range of the oil level 30a of the oil storage unit 30. Here, it is assumed that the oil level 30a is along the horizontal plane, such as when the vehicle is stopped. In the present embodiment, the oil level 30a of the oil storage unit 30 when all pumps are stopped is located below the lower end 82a of the clutch drum 82 included in the clutch 81. The clutch 81 is a transmission engaging device included in the transmission 4. In the present embodiment, the clutch drum 82 shown in FIG. 2 is a rotating body in which the lower end of the rotating body included in the transmission 4 is arranged at the lowermost V2. Further, in the present embodiment, the oil level 30a of the oil storage unit 30 in the all pump stopped state is located below the lower end of the rotor 60. When the rotating body whose lower end is arranged at the lowermost V2 of the rotating bodies included in the transmission 4 is a rotating body different from the clutch drum 82 (hereinafter, referred to as "target rotating body"). It is preferable that the oil level 30a of the oil storage unit 30 in the state where all the pumps are stopped is located below the lower end of the target rotating body included in the transmission 4. In this embodiment, the clutch drum 82 corresponds to a "rotating body".

As shown in FIG. 2, the case 40 includes a mounting portion 1a that is attached to a mount 86 fixed to the vehicle body 85. In the example shown in FIG. 2, a mount 86 (rubber mount) provided with a rubber pedestal is fixed to the cross member 85a included in the vehicle body 85. A member (stay or the like) fixed to the mount 86 or the mount 86 is attached to the attachment portion 1a provided on the case 40 by using, for example, a fastening bolt. In the present embodiment, the end portion of the second side L2 in the axial direction of the case 40 (specifically, the first case portion 41) is connected to the internal combustion engine 2 in the axial direction of the vehicle drive device 1. The end of the second side L2 is supported by the vehicle body 85 via a mount (not shown) attached to the internal combustion engine 2. That is, the vehicle drive device 1 is supported by the vehicle body 85 at at least two locations (for example, only two locations), one at which the mounting portion 1a is provided and the other at the end of the second side L2 in the axial direction.

In the present embodiment, the second case portion 42 is provided with the mounting portion 1a. Here, the mounting portion 1a is provided at a position overlapping the rotary electric machine 6 in a radial direction along the radial direction R. The mounting portion 1a is arranged so as to overlap with the rotary electric machine 6 in the radial direction in a part of the circumferential direction. That is, the mounting portion 1a is arranged so that the arrangement region in the axial direction L overlaps with the rotary electric machine 6. In the example shown in FIG. 2, the portion of the mounting portion 1a on the first side L1 in the axial direction is arranged so as to overlap the second coil end portion 64B (see FIG. 3) in the radial direction.

Here, the rotary electric machine 6 is removed from the vehicle drive device 1 of the present embodiment, and the adapter portion (corresponding to the second case portion 42 of the vehicle drive device 1 of the present embodiment) that connects the transmission 4 and the transfer 84. A vehicle drive device provided with a mounting portion to be attached to the mount is considered as an existing vehicle drive device. As described above, in the vehicle drive device 1 of the present embodiment, the mounting portion 1a is provided in the second case portion 42. Therefore, when the rotary electric machine 6 is added (that is, hybridized) to such an existing vehicle drive device to realize the vehicle drive device 1 of the present embodiment, the position of the mounting portion 1a is existing. It is not necessary to make a significant change from the vehicle drive device, and for example, the position of the mounting portion 1a can be made common with the existing vehicle drive device. As a result, when the existing vehicle drive device 1 is realized by hybridizing the existing vehicle drive device, the scale of change on the vehicle body 85 side can be suppressed to a small size.

Next, the oil supply structure for the rotary electric machine 6 in the vehicle drive device 1 of the present embodiment will be described. As shown in FIG. 6, the vehicle drive device 1 includes a suction oil passage 70 that connects the oil storage unit 30 and the second suction port P2a. As shown in FIG. 3, in the present embodiment, the suction oil passage 70 is formed so as to penetrate the joint surface 40a (matching surface) between the first case portion 41 and the second case portion 42. In the present embodiment, the suction oil passage 70 corresponds to an "oil passage connecting the oil storage unit and the suction port of the second pump".

Specifically, the suction oil passage 70 includes a first oil passage 91 and a second oil passage 92. The first oil passage 91 is an end surface (first case portion) of the oil storage portion 30 (specifically, the second strainer 32 arranged in the oil storage portion 30) and the axial first side L1 in the first case portion 41. It is an oil passage connecting the joint surface 40a) on the 41 side. The downstream end of the first oil passage 91 is open to the end surface of the axial first side L1 in the first case 41 (see FIG. 4). Here, the upstream portion of the first oil passage 91 is formed inside the suction pipe 51 whose one end is connected to the second strainer 32, and the downstream portion of the first oil passage 91 is formed in the first case portion 41. It is formed. Further, the second oil passage 92 is an oil passage that connects the end surface of the second side L2 in the axial direction (the joint surface 40a on the side of the second case portion 42) of the second case portion 42 and the second suction port P2a. The upstream end of the second oil passage 92 is open to the end face of the second L2 in the axial direction in the second case 42 (see FIG. 5). Here, only the upstream portion of the second oil passage 92 is formed in the second case portion 42. Then, the downstream end of the first oil passage 91 and the upstream end of the second oil passage 92 are arranged so as to face the axial direction L on the joint surface 40a (see FIG. 3), so that the first oil The downstream end of the road 91 and the upstream end of the second oil passage 92 communicate with each other to connect the first oil passage 91 and the second oil passage 92. As a result, the suction oil passage 70 is formed so as to penetrate the joint surface 40a.

As shown in FIG. 6, the vehicle drive device 1 includes a discharge oil passage 71 that supplies the oil discharged from the second pump P2 to the rotary electric machine 6. In the present embodiment, the discharge oil passage 71 is not provided with an oil cooler which is a heat exchanger for cooling the oil, but the oil temperature of the oil storage unit 30 in which the second pump P2 sucks the oil is described above. The presence of the oil cooler 9 keeps the temperature below a predetermined temperature. Therefore, even if the discharge oil passage 71 is not provided with an oil cooler in this way, the rotary electric machine 6 can be appropriately cooled. An oil cooler may be provided in the discharge oil passage 71. In the present embodiment, the discharge oil passage 71 corresponds to "an oil passage for supplying the oil discharged from the second pump to the rotary electric machine".

As shown in FIG. 3, in the present embodiment, the discharge oil passage 71 is formed so as to penetrate the joint surface 40a between the first case portion 41 and the second case portion 42. Specifically, the discharge oil passage 71 includes a fourth oil passage 94 and a sixth oil passage 96. The fourth oil passage 94 is an oil passage to which the oil discharged by the second pump P2 is supplied, and the downstream end portion of the fourth oil passage 94 is the end surface of the first side L1 in the axial direction in the first case portion 41. It is open to. Here, the entire fourth oil passage 94 is formed in the first case portion 41. Further, the sixth oil passage 96 is an oil passage to which oil is supplied from the fourth oil passage 94, and the upstream end portion of the sixth oil passage 96 is the axial second side L2 in the second case portion 42. It is open to the end face (see FIG. 5). Here, the entire sixth oil passage 96 is formed in the support member 44 (specifically, the cylindrical portion 44a extending in the axial direction L in the support member 44). Then, the downstream end of the fourth oil passage 94 and the upstream end of the sixth oil passage 96 are arranged so as to face the axial direction L on the joint surface 40a (see FIG. 3), so that the fourth oil The downstream end of the road 94 and the upstream end of the sixth oil passage 96 communicate with each other to connect the fourth oil passage 94 and the sixth oil passage 96. As a result, the discharge oil passage 71 is formed so as to penetrate the joint surface 40a.

In the present embodiment, the oil in the sixth oil passage 96 is supplied to the rotary electric machine 6 from the radial outer side R1. Specifically, as shown in FIG. 3, the vehicle drive device 1 includes an eighth oil passage 98 that supplies oil to the rotary electric machine 6 from the radial outer side R1, and the sixth oil passage 96. The downstream end is connected to the upstream end of the eighth oil passage 98. Therefore, the oil supplied from the sixth oil passage 96 to the eighth oil passage 98 is supplied to the rotary electric machine 6 from the radial outer side R1. Here, the eighth oil passage 98 is formed inside the cooling pipe 52 arranged on the upper side V1 with respect to the stator 61. The end of the second side L2 in the axial direction of the cooling pipe 52 is supported by a support member 44 (specifically, a tubular portion 44a) so that the eighth oil passage 98 communicates with the sixth oil passage 96. .. The cooling pipe 52 is formed with a discharge hole that communicates the inner peripheral surface and the outer peripheral surface of the cooling pipe 52, and the oil in the eighth oil passage 98 is discharged from the discharge hole toward the stator 61. , The stator 61 is cooled. In the example shown in FIG. 3, as discharge holes, a first discharge hole 52a for discharging oil toward the first coil end portion 64A and a second discharge hole 52b for discharging oil toward the second coil end portion 64B. A third discharge hole 52c for discharging oil toward the stator core 62 is formed.

In the present embodiment, the discharge oil passage 71 further includes a third oil passage 93, a fifth oil passage 95, a seventh oil passage 97, and a ninth oil passage 99. The third oil passage 93 is an oil passage arranged on the upstream side of the fourth oil passage 94 in the discharge oil passage 71. As shown in FIG. 3, the third oil passage 93 uses the oil (see FIG. 2) discharged from the second pump P2 and introduced into the first case portion 41 from the outside of the first case portion 41 as the fourth oil. Supply to road 94. Here, the entire third oil passage 93 is formed in the first case portion 41. The fifth oil passage 95 is connected to the third oil passage 93 in parallel with the fourth oil passage 94. That is, the oil discharged from the second pump P2 and supplied to the third oil passage 93 is distributed to the fourth oil passage 94 and the fifth oil passage 95. Here, the entire fifth oil passage 95 is formed on the partition wall 43. Specifically, the fifth oil passage 95 is formed so as to extend from the connection portion with the third oil passage 93 to the inside of the partition wall 43 toward the inner side R2 in the radial direction. A through hole that penetrates the partition wall 43 in the axial direction L is formed in the central portion of the partition wall 43 in the radial direction R, and the fifth oil passage 95 is opened on the inner peripheral surface of the through hole. .. The shift output member 23 is inserted through the above-mentioned through hole formed in the partition wall 43, and the oil in the fifth oil passage 95 is supplied to the seventh oil passage 97 formed in the shift output member 23.

The seventh oil passage 97 is an oil passage extending in the axial direction L, and is formed inside the speed change output member 23. The seventh oil passage 97 is partitioned by the inner peripheral surface of the speed change output member 23. The speed change output member 23 is formed with a supply hole 23a that communicates the inner peripheral surface and the outer peripheral surface of the speed change output member 23, and the oil in the fifth oil passage 95 passes through the seventh oil passage through the supply hole 23a. It is supplied to 97. The ninth oil passage 99 is an oil passage extending in the axial direction L, and is formed inside the intermediate member 24. The ninth oil passage 99 is partitioned by the inner peripheral surface of the intermediate member 24. The seventh oil passage 97 is formed so as to open on the first side L1 in the axial direction, and the ninth oil passage 99 is formed so as to open on the second side L2 in the axial direction. Therefore, the oil in the seventh oil passage 97 flows toward the first side L1 in the axial direction and is supplied to the ninth oil passage 99.

The oil in the ninth oil passage 99 is supplied to the rotary electric machine 6 from the radial inner side R2. Specifically, the intermediate member 24 is formed with a first supply hole 24a that communicates the inner peripheral surface and the outer peripheral surface of the intermediate member 24, and the oil in the ninth oil passage 99 is the first supply hole 24a. Is supplied to the inner peripheral surface of the rotor shaft 25. The oil supplied to the inner peripheral surface of the rotor shaft 25 flows in the axial direction L, and the rotor 60 is cooled from the radial inner side R2 by the heat exchange between the oil and the rotor shaft 25 performed at this time. In the example shown in FIG. 3, the rotor shaft 25 is formed with a first discharge hole 25a and a second discharge hole 25b for discharging the oil inside the rotor shaft 25 to the outside of the rotor shaft 25. The first discharge hole 25a and the second discharge hole 25b are formed so as to communicate the inner peripheral surface and the outer peripheral surface of the rotor shaft 25. The first discharge hole 25a is arranged on the first side L1 in the axial direction with respect to the first supply hole 24a, and the oil flowing inside the rotor shaft 25 toward the first side L1 in the axial direction is discharged first. It is discharged from the hole 25a to the outside of the rotor shaft 25. The second discharge hole 25b is arranged on the second side L2 in the axial direction with respect to the first supply hole 24a, and the oil flowing inside the rotor shaft 25 toward the second side L2 in the axial direction is discharged second. It is discharged from the hole 25b to the outside of the rotor shaft 25.

In the present embodiment, the oil discharged from the first discharge hole 25a is supplied from the radial inner side R2 to the first coil end portion 64A, and the oil discharged from the second discharge hole 25b is the second coil end. It is supplied from the radial inner side R2 with respect to the portion 64B. As described above, in the present embodiment, the oil after cooling the rotor 60 is supplied to the first coil end portion 64A and the second coil end portion 64B, and the first coil end portion 64A and the second coil end portion 64B are supplied. It is configured to cool.

In the example shown in FIG. 3, a second supply hole 24b that communicates the inner peripheral surface and the outer peripheral surface of the intermediate member 24 is formed on the second side L2 in the axial direction with respect to the first supply hole 24a in the intermediate member 24. The oil in the ninth oil passage 99 is also supplied to the inner peripheral surface of the rotor shaft 25 from the second supply hole 24b. Further, the rotor shaft 25 is formed with a third discharge hole 25c for discharging the oil supplied from the second supply hole 24b to the inner peripheral surface of the rotor shaft 25 to the outside of the rotor shaft 25. The third discharge hole 25c is formed so as to communicate the inner peripheral surface and the outer peripheral surface of the rotor shaft 25. The oil discharged from the third discharge hole 25c to the outside of the rotor shaft 25 is supplied to a bearing (ball bearing in the example shown in FIG. 3) that rotatably supports the rotor shaft 25 with respect to the support member 44. Then, the bearing is lubricated. Further, the oil discharged to the outside of the rotor shaft 25 from the end of the second side L2 in the axial direction of the rotor shaft 25 and the oil discharged to the outside of the rotor shaft 25 from the third discharge hole 25c cause the speed reducer 83. By supplying the bearing to the supporting bearing (for example, the bearing supporting the sun gear 11), the bearing is lubricated.

As shown in FIG. 3, in the present embodiment, the speed change output member 23 and the intermediate member 24, which are connected so as to rotate integrally with each other, penetrate the reduction gear 83 in the radial direction R2 in the axial direction L. And are arranged. Then, in the present embodiment, as shown in FIG. 3, the vehicle drive device 1 causes the oil discharged from the second pump P2 to be radially inside R2 with respect to the speed reducer 83 via the supply oil passage 73. It is configured to supply from. In the example shown in FIG. 3, the supply oil passage 73 is an oil passage extending in the axial direction L along the shift output member 23 (specifically, the outer peripheral surface of the shift output member 23), and the oil is the supply oil. It flows along the road 73 toward the first side L1 in the axial direction. Here, the supply oil passage 73 is formed between the inner peripheral surface of the through hole formed in the central portion of the partition wall 43 in the radial direction R and the outer peripheral surface of the speed change output member 23 in the radial direction R. , A part of the oil of the fifth oil passage 95 is supplied to the supply oil passage 73 from the second side L2 in the axial direction through the groove portion extending in the axial direction L formed on the inner peripheral surface of the through hole. NS. In the present embodiment, the speed change output member 23 and the intermediate member 24 correspond to a "shaft member" that penetrates the speed reducer in the radial direction in the axial direction, and the supply oil passage 73 is "an oil passage along the shaft member". Corresponds to.

The oil in the supply oil passage 73 is supplied from the radial inner side R2 to the speed reducer 83. Specifically, the oil in the supply oil passage 73 is supplied from the radially inner R2 to the oil receiver 53 attached to the carrier 12, and the oil collected by the oil receiver 53 is formed inside the pinion shaft 15. The pinion bearing that rotatably supports the pinion gear 14 with respect to the pinion shaft 15 is lubricated by being guided by the lubricated oil passage. In the example shown in FIG. 3, the oil in the supply oil passage 73 is supplied to a bearing (thrust bearing) provided between the intermediate member 24 and the partition wall 43 in the axial direction L, and the oil after lubricating the bearing. Is collected by the oil receiver 53.

[Other Embodiments]
Next, other embodiments of the vehicle drive device will be described.

(1) In the above embodiment, the supply oil passage 73 for supplying oil from the radial inner side R2 to the speed reducer 83 extends in the axial direction L along the outer peripheral surface of the speed change output member 23. The configuration formed in is described as an example. However, the present disclosure is not limited to such a configuration, and for example, the supply oil passage 73 may be formed so as to extend in the axial direction L along the inner peripheral surface of the speed change output member 23. can. In this case, the supply oil passage 73 is composed of the seventh oil passage 97 in the above embodiment. In this case, for example, the oil in the supply oil passage 73 (7th oil passage 97) communicates with the inner peripheral surface and the outer peripheral surface of the speed change output member 23 (in the first side L1 in the axial direction with respect to the supply hole 23a). It can be configured to be supplied from the radial inner side R2 to the speed reducer 83 (specifically, the oil receiver 53) through the formed hole).

(2) In the above embodiment, the configuration in which the discharge oil passage 71 is formed so as to penetrate the joint surface 40a between the first case portion 41 and the second case portion 42 has been described as an example. However, the present disclosure is not limited to such a configuration, and for example, when the oil discharged from the second pump P2 is introduced into the second case portion 42 from the outside of the second case portion 42, the discharge oil passage 71 Can be configured so as not to penetrate the joint surface 40a.

(3) In the above embodiment, the configuration in which the suction oil passage 70 is formed so as to penetrate the joint surface 40a between the first case portion 41 and the second case portion 42 has been described as an example. However, the present disclosure is not limited to such a configuration, and for example, when the second pump P2 is arranged in the second chamber S2, the suction oil passage 70 is not formed so as to penetrate the joint surface 40a. You can also do it.

(4) In the above embodiment, the configuration in which the second strainer 32 is arranged in the oil storage unit 30 has been described as an example. However, the present disclosure is not limited to such a configuration, and the second strainer 32 is arranged outside the oil storage unit 30 in the oil flow path between the oil storage unit 30 and the second suction port P2a. It can also be configured.

(5) In the above embodiment, the first strainer 31 is connected to the first suction port P1a which is the suction port of the first pump P1, and the second suction port P2a which is the suction port of the second pump P2 is connected to the first strainer 31. A configuration in which a second strainer 32 different from the first strainer 31 is connected has been described as an example. However, the present disclosure is not limited to such a configuration, and a second strainer 32 different from the first strainer 31 may not be provided, and the first strainer 31 may be connected to the second suction port P2a. can. That is, the first pump P1 and the second pump P2 suck the oil of the oil storage unit 30 through a common strainer (the first strainer 31 in the above embodiment) arranged in the oil storage unit 30. It can also be.

(6) In the above embodiment, the configuration in which the oil discharged from the second pump P2 is supplied to the rotary electric machine 6 without going through the hydraulic control device 8 has been described as an example. However, the present disclosure is not limited to such a configuration, and the oil discharged from the second pump P2 is adjusted via the hydraulic control device 8 (for example, after the pressure is adjusted by the hydraulic control device 8), and the rotary electric machine 6 It can also be configured to be supplied to.

(7) In the above embodiment, the oil level 30a of the oil storage unit 30 in the fully stopped state in which both the first pump P1 and the second pump P2 are stopped is among the rotating bodies included in the transmission 4. The configuration in which the lower end is located below the lower end of the rotating body (in the above embodiment, the lower end 82a of the clutch drum 82) arranged at the lowermost V2 has been described as an example. However, the present disclosure is not limited to such a configuration, and the oil level 30a of the oil storage unit 30 in the state where all pumps are stopped is a rotation in which the lower end of the rotating body included in the transmission 4 is arranged at the lowermost V2. It can also be configured to be placed above the lower end of the body.

(8) In the above embodiment, a configuration in which the mounting portion 1a is provided on the second case portion 42 has been described as an example. However, the present disclosure is not limited to such a configuration, and a configuration in which the mounting portion 1a is not provided in the second case portion 42, for example, a configuration in which the mounting portion 1a is provided in the transfer case may be used.

(9) In the above embodiment, the configuration in which the speed reducer 83 is arranged coaxially with the speed change output member 23 between the transmission 4 and the rotary electric machine 6 in the axial direction L has been described as an example. However, the present disclosure is not limited to such a configuration, and for example, the speed reducer 83 is configured to be arranged coaxially with the speed change output member 23 between the rotary electric machine 6 and the transfer 84 in the axial direction L. You can also.

(10) In the above embodiment, the planetary gear mechanism 10 has a sun gear 11 connected to the rotary electric machine 6, a carrier 12 connected to the intermediate member 24, and a ring gear 13 fixed to the second case portion 42. The configuration to be provided has been described as an example. However, the present disclosure is not limited to such a configuration, and the planetary gear mechanism 10 is connected to the sun gear 11 fixed to the second case portion 42, the carrier 12 connected to the intermediate member 24, and the rotary electric machine 6. A ring gear 13 may be provided. Further, a double pinion type planetary gear mechanism can also be used as the planetary gear mechanism 10. In this case, the planetary gear mechanism 10 is fixed to the sun gear 11 connected to the rotary electric machine 6 and the second case portion 42. A carrier 12 and a ring gear 13 connected to an intermediate member 24 are provided, or a sun gear 11 in which a planetary gear mechanism 10 is fixed to a second case portion 42 and a carrier 12 connected to a rotary electric machine 6 are provided. , A ring gear 13 connected to the intermediate member 24 may be provided.

(11) In the above embodiment, the case where the vehicle drive device 1 is a four-wheel drive system drive device has been described as an example. However, the present disclosure is not limited to such a configuration, and the vehicle drive device 1 is a drive device (two-wheel drive system drive device) that drives a pair of left and right rear wheels 3A or a pair of left and right front wheels 3B. You can also. For example, the transfer 84 may not be provided, and the output member 27 may be connected so as to rotate integrally with the first output member 21A. Further, the vehicle drive device 1 can be used as a drive device for driving one wheel 3.

(12) The configurations disclosed in each of the above-described embodiments shall be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction between the embodiments described as the other embodiments. (Including combinations) is also possible. With respect to other configurations, the embodiments disclosed herein are merely exemplary in all respects. Therefore, various modifications can be made as appropriate without departing from the gist of the present disclosure.

[Outline of the above embodiment]
Hereinafter, the outline of the vehicle drive device described above will be described.

The vehicle drive device (1) includes an input member (20) that is driven and connected to the internal combustion engine (2), an output member (27) that is driven and connected to the wheels (3), the input member (20), and the above. A transmission (4) provided in the first power transmission path (T1) connecting the output member (27) to shift the rotation transmitted from the input member (20) side and transmit it to the shift output member (23). ) And the rotation capable of transmitting the driving force to the output member (27) side of the speed change output member (23) in the first power transmission path (T1) via the second power transmission path (T2). The electric machine (6), the case (40) accommodating the transmission (4) and the rotary electric machine (6), and the first pump (P1) driven by the power transmitted through the first power transmission path (T1). And a second pump (P2) driven by a driving force source (M) independent of the first power transmission path (T1), the rotary electric machine (6) is said to have the axial direction (L). A first case (40) in which the transmission (4) is housed is arranged coaxially with the speed change output member (23) on the side of the output member (27) with respect to the transmission (4). A first case portion (41) forming a chamber (S1) and a second case joined to the first case portion (41) to form a second chamber (S2) in which the rotary electric machine (6) is housed. A section (42), a partition wall (43) for partitioning the first chamber (S1) and the second chamber (S2), and the partition wall (43) are provided with the first chamber (S1). A communication hole (50) is formed to communicate with the second chamber (S2), and the first case portion (41) has a case main body portion (45) having an opening (45a) formed in the lower portion and the case body portion (45). The first pump is provided with a receiving member (46) attached to the case main body (45) so as to close the opening (45a) and forming an oil storage portion (30) in the first chamber (S1). (P1) supplies the oil sucked from the oil storage unit (30) to the transmission (4), and the second pump (P2) rotates the oil sucked from the oil storage unit (30). The oil supplied to the electric machine (6) and supplied to the transmission (4) passes through the inside of the first chamber (S1) and returns to the oil storage unit (30) to the rotary electric machine (6). The supplied oil returns from the second chamber (S2) to the oil storage unit (30) through the communication hole (50).

According to this configuration, in a vehicle drive device (1) provided with a transmission (4) and a rotary electric machine (6) coaxially, oil is supplied to the transmission (4) by a first pump (P1). Since oil can be supplied to the rotary electric machine (6) by the second pump (P2), oil can be appropriately supplied to each of the transmission (4) and the rotary electric machine (6). Further, a communication hole (50) is formed in the partition wall (43) that divides the first chamber (S1) in which the transmission (4) is housed and the second room (S2) in which the rotary electric machine (6) is housed. The oil supplied to the transmission (4) passes through the inside of the first chamber (S1) and returns to the oil storage unit (30) formed in the first chamber (S1), and returns to the rotary electric machine (6). The oil supplied to the oil is configured to return from the second chamber (S2) to the oil storage unit (30) through the communication hole (50). Therefore, it is not necessary to provide an oil storage unit for each of the first pump (P1) and the second pump (P2), and the first pump (P1) and the second pump (P2) are used in the first chamber (S1). One formed oil reservoir (30) can be shared.

As a result, the second case portion (42) in which the rotary electric machine (6) is housed can have a simple configuration that does not need to include the oil storage portion (30). On the other hand, even in an existing vehicle in which only an internal combustion engine is used as a driving force source for wheels, an oil storage unit for storing oil to be supplied to the transmission is usually provided in a case where the transmission is housed. Therefore, according to this configuration, the configuration of the first case portion (41) in which the transmission (4) is housed is similar to the case of the transmission of the existing vehicle, or the case of the transmission of the existing vehicle is used as it is. Can be used. As described above, according to this configuration, the second case portion (42) in which the rotary electric machine (6), which is an additional element for the existing vehicle, is housed can be simplified, and the transmission (transmission) ( Since the configuration of the first case portion (41) in which 4) is housed can be similar to that of an existing vehicle, it can be easily mounted on various vehicles and has a highly versatile vehicle drive device (1). ) Can be realized.

Here, the oil discharged from the first pump (P1) is supplied to the transmission (4) via the hydraulic control device (8), and the oil discharged from the second pump (P2) is It is preferable that the oil is supplied to the rotary electric machine (6) without going through the hydraulic control device (8).

According to this configuration, the transmission (4) can be appropriately controlled by the hydraulic control device (8) using the oil from the first pump (P1), and the rotary electric machine (6) is used for cooling and lubrication. ), Since the oil is not supplied through the hydraulic control device (8), the pressure loss can be suppressed to be small and the oil can be efficiently supplied. Further, even in such a configuration, as described above, the oil storage unit (30) can be shared by the first pump (P1) and the second pump (P2).

Further, the bottom portion (S2a) of the second chamber (S2) is arranged above the bottom portion (S1a) of the oil storage portion (30), and the communication hole (50) is the second chamber (S2). It is preferable that the second chamber (S2) has an opening at the bottom (S2a) on the side.

According to this configuration, the oil in the second chamber (S2) is located in the first chamber (S1) from the bottom (S2a) of the second chamber (S2) through the communication hole (50). The flow flowing to the side of (30) can be appropriately formed. Therefore, the oil after being supplied to the rotary electric machine (6) can be appropriately returned to the oil storage unit (30).

Further, a first strainer (31) connected to the suction port (P1a) of the first pump (P1) and a second strainer (32) connected to the suction port (P2a) of the second pump (P2). Is preferably arranged in the oil storage unit (30).

According to this configuration, even if the first pump (P1) and the second pump (P2) are provided with strainers independently, the first pump (P1) and the first pump (P1) and the second pump (P2) and the second pump (P1) and the second pump (P2) are provided through the respective strainers. 2 The pump (P2) can appropriately suck oil from the oil storage unit (30). Further, since the second strainer (32) is arranged in the oil storage portion (30) formed in the first chamber (S1), it is not necessary to arrange the strainer on the side of the second case portion (42). Therefore, it is easy to reduce the size of the second case portion (42) in which the rotary electric machine (6) is housed, or to make the configuration even simpler.

Further, the oil passage (70) connecting the oil storage portion (30) and the suction port (P2a) of the second pump (P2) is the first case portion (41) and the second case portion (42). ), It is preferable that it is formed so as to penetrate the joint surface (40a).

According to this configuration, even when the second pump (P2) is attached to the side of the second case portion (42), the oil storage portion (30) and the second pump formed in the first chamber (S1). The suction port (P2a) of (P2) can be appropriately connected.

Further, the oil passage (71) for supplying the oil discharged from the second pump (P2) to the rotary electric machine (6) is a combination of the first case portion (41) and the second case portion (42). It is preferable that it is formed so as to penetrate the joint surface (40a).

According to this configuration, the oil discharged from the second pump (P2) can be supplied to the rotary electric machine (6) via the oil passage formed in the first case portion (41). Therefore, for example, a connecting oil passage (93) communicating with the oil passage arranged outside or inside in the radial direction (R) with respect to the rotary electric machine (6) is provided on the side of the first case portion (41). Even if there is, oil can be appropriately supplied to the rotary electric machine (6) through the connecting oil passage (93).

Further, it is preferable that the second case portion (42) is provided with a mounting portion (1a) to be attached to a mount (86) fixed to the vehicle body (85).

Generally, the mounting portion (1a) attached to the mount (86) is provided with a fastening hole for a fastening member for connecting to the mount (86). If an oil storage portion is provided in the portion of the case where such a fastening hole is provided, a seal structure for preventing oil from leaking from the fastening hole is required, or the fastening hole is used as oil for the case. It is necessary to take measures such as attaching the case to the mount (86) via another member in order to separate it from the storage portion. According to this configuration, as described above, since the oil storage portion (30) is not provided in the second case portion (42), such measures are not required and the configuration of the mounting portion (1a) is simplified. be able to. Further, according to this configuration, the case (40) can be supported by the vehicle body (85) at a position close to the rotating electric machine (6), which tends to generate torsional vibration of the drive system. Therefore, it is easy to reduce the torsional vibration of the drive system and suppress the vibration of the vehicle body (85) caused by the torsional vibration.

Further, a speed reducer (83) provided in the second power transmission path (T2) that decelerates the rotation transmitted from the rotary electric machine (6) side and transmits the rotation to the first power transmission path (T1) side. ) And shaft members (23, 24) that penetrate the inside of the speed reducer (83) in the radial direction (R) in the axial direction (L), and discharge from the second pump (P2). The oil is supplied to the speed reducer (83) from the inside in the radial direction (R) via an oil passage (73) along the shaft members (23, 24). Is suitable.

According to this configuration, oil can be supplied to the speed reducer (83) that operates together with the rotary electric machine (6) from the second pump (P2) that is common to the rotary electric machine (6). Therefore, it is easy to supply oil appropriately according to the operation of the speed reducer (83). Further, since centrifugal force acts on the rotating body, the oil is supplied to the place where it is necessary to supply the oil from the inside of the radial direction (R) rather than the oil from the outside of the radial direction (R). easy. According to this configuration, oil is supplied from the inside in the radial direction (R) to the speed reducer (83) provided with such a rotating body, so that the oil is appropriately supplied to the necessary parts of the speed reducer (83). can do.

Further, the oil level (30a) of the oil storage unit (30) in a state where both the first pump (P1) and the second pump (P2) are stopped is rotated by the transmission (4). It is preferable that the body (82) is located below the lower end (82a).

According to this configuration, the rotating body (82) included in the transmission (4) can be prevented from being immersed in oil even when the oil level (30a) of the oil storage unit (30) is high. Therefore, it is possible to suppress an increase in the rotational resistance of the rotating body (82) due to the oil in the oil storage portion (30).

The vehicle drive device according to the present disclosure may be capable of exerting at least one of the above-mentioned effects.

1: Vehicle drive device 1a: Mounting part 2: Internal combustion engine 3: Wheel 4: Transmission 6: Rotating electric machine 8: Flood control device 20: Input member 23: Speed change output member (shaft member)
24: Intermediate member (shaft member)
27: Output member 30: Oil storage part 30a: Oil level 31: First strainer 32: Second strainer 40: Case 40a: Joint surface 41: First case part 42: Second case part 43: Section wall 45: Case body Part 45a: Opening 46: Receiving member 50: Communication hole 70: Suction oil passage (oil passage connecting the oil storage portion and the suction port of the second pump)
71: Discharge oil passage (oil passage that supplies the oil discharged from the second pump to the rotary electric machine)
73: Supply oil passage (oil passage along the shaft member)
82: Clutch drum (rotating body)
82a: Lower end 83: Reducer 85: Body 86: Mount L: Axial direction M: Driving force source P1: First pump P1a: First suction port (suction port of first pump)
P2: Second pump P2a: Second suction port (suction port of the second pump)
R: Radial direction S1: First chamber S1a: First bottom (bottom of oil storage)
S1: Second chamber S2a: Second bottom (bottom of second chamber)
T1: 1st power transmission path T2: 2nd power transmission path

Claims (9)

Input members that are driven and connected to the internal combustion engine
The output member that is driven and connected to the wheel
A transmission provided in the first power transmission path connecting the input member and the output member to shift the rotation transmitted from the input member side and transmit the rotation to the shift output member.
A rotary electric machine capable of transmitting a driving force via a second power transmission path to the output member side of the speed change output member in the first power transmission path.
A case for accommodating the transmission and the rotary electric machine,
A first pump driven by power transmitted through the first power transmission path, and
A second pump driven by a driving force source independent of the first power transmission path is provided.
The rotary electric machine is arranged coaxially with the speed change output member on the side of the output member with respect to the transmission in the axial direction.
The case includes a first case portion that forms a first chamber in which the transmission is housed, and a second case portion that is joined to the first case portion to form a second chamber in which the rotary electric machine is housed. A partition wall that separates the first room and the second room is provided.
A communication hole for communicating the first chamber and the second chamber is formed in the partition wall.
The first case portion includes a case main body portion having an opening formed in a lower portion, and a receiving member attached to the case main body portion so as to close the opening and forming an oil storage portion in the first chamber. ,
The first pump supplies the oil sucked from the oil storage unit to the transmission.
The second pump supplies the oil sucked from the oil storage unit to the rotary electric machine.
The oil supplied to the transmission returns to the oil storage unit through the inside of the first chamber, and the oil supplied to the rotary electric machine passes through the communication hole from the second chamber to the oil storage unit. A vehicle drive that returns to. The oil discharged from the first pump is supplied to the transmission via the hydraulic control device, and is supplied to the transmission.
The vehicle drive device according to claim 1, wherein the oil discharged from the second pump is supplied to the rotary electric machine without going through the hydraulic control device. The bottom of the second chamber is located above the bottom of the oil reservoir.
The vehicle drive device according to claim 1 or 2, wherein the communication hole opens at the bottom of the second chamber on the second chamber side. Any of claims 1 to 3, wherein the first strainer connected to the suction port of the first pump and the second strainer connected to the suction port of the second pump are arranged in the oil storage portion. The vehicle drive device according to item 1. Claims 1 to 4 are formed so that an oil passage connecting the oil storage portion and the suction port of the second pump penetrates a joint surface between the first case portion and the second case portion. The vehicle drive device according to any one of the above. Claims 1 to 5 are formed so that an oil passage for supplying the oil discharged from the second pump to the rotary electric machine penetrates a joint surface between the first case portion and the second case portion. The vehicle drive device according to any one of the above. The vehicle drive device according to any one of claims 1 to 6, wherein the second case portion is provided with a mounting portion to be attached to a mount fixed to a vehicle body. A speed reducer provided in the second power transmission path, which decelerates the rotation transmitted from the rotary electric machine side and transmits the rotation to the side of the first power transmission path, and the inside in the radial direction with respect to the speed reducer. A shaft member penetrating in the axial direction is provided.
Any of claims 1 to 7, wherein the oil discharged from the second pump is supplied to the speed reducer from the inside in the radial direction via an oil passage along the shaft member. The vehicle drive device according to item 1. Claims 1 to 8 wherein the oil level of the oil storage portion in a state where both the first pump and the second pump are stopped is located below the lower end of the rotating body included in the transmission. The vehicle drive device according to any one of the above.

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