Vehicle drive device

Abstract

To achieve a vehicle drive device that can supply oil to parts of a drive mechanism that require lubrication with a simple configuration.SOLUTION: A vehicle drive device comprises an engagement device having a drive mechanism 45 that drives a driven member 41. A target place, which is at least a part of places of the drive mechanism 45 that require lubrication, is arranged radially outside relative to a first rotating electric machine, and is arranged so that the arrangement region of the target place in an axial direction B overlaps with the arrangement region of the first rotating electric machine in the axial direction B. An oil supply passage for supplying a part of oil in a case to the target place is formed using the case.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle drive system having an engagement device. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2013-087779 (Patent Document 1) describes an engagement device including a drive mechanism (90). The drive mechanism (90) includes a drive gear (100) and a driven gear (93) disposed within an actuator case (98). The actuator case is fixed to the outer peripheral surface of a transmission case (11) with bolts. The drive mechanism (90) also includes a pinion (94a) and a rack (95a). The pinion (94a) and the rack (95a) are disposed within the transmission case (11) at positions relatively close to the outer peripheral wall of the transmission case. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-087779 Summary of the Invention [Problem to be solved by the invention]

[0004] In the vehicle drive system of Patent Document 1, it is considered necessary to supply lubricating oil to each part of the drive mechanism. However, as described above, the drive mechanism is often located far from the power transmission mechanism, such as near the outer wall of the transmission case or on the outside. In such cases, it is difficult to ensure that the oil scooped up by the gears of the power transmission mechanism reaches each part of the drive mechanism, and a hydraulic device such as an oil pump may be required to supply oil to each part of the drive mechanism. However, such a configuration requires an oil pump, hydraulic circuits, etc., which can easily complicate the configuration of the vehicle drive system.

[0005] Therefore, it is desirable to realize a vehicle drive device that can supply oil to parts of the drive mechanism that require lubrication with a simple configuration. [Means for solving the problem]

[0006] The vehicle drive device of the present disclosure comprises a rotating electric machine having a rotor, an output member drivingly connected to a wheel, a power transmission mechanism that transmits power between the rotor and the output member, and a case that houses the rotating electric machine and the power transmission mechanism, wherein the power transmission mechanism comprises a meshing engagement device, and the engagement device comprises a driven member that is driven to switch the transmission state of the driving force in the power transmission mechanism, and a drive mechanism that drives the driven member, with the direction along the rotational axis of the rotor being the axial direction and the direction perpendicular to the rotational axis being the radial direction, and target locations that are at least some of the locations of the drive mechanism that require lubrication are arranged radially outward from the rotating electric machine, and the axial arrangement area of ​​the target locations is arranged so as to overlap with the axial arrangement area of ​​the rotating electric machine, and an oil supply passage for supplying some of the oil in the case to the target locations is formed using the case.

[0007] In the vehicle drive device of this configuration, the target location of the drive mechanism is located radially outward from the rotating electric machine, and the target location's location area in the rotational axis direction overlaps with the target location area of ​​the rotating electric machine in the rotational axis direction, so, for example, oil scooped up by gears included in the power transmission mechanism is unlikely to reach the target location. However, with this configuration, the case is used to form an oil supply passage for supplying a portion of the oil inside the case to the target location, making it easy to supply oil to the drive mechanism's locations requiring lubrication with a simple configuration. [Brief explanation of the drawings]

[0008] [Figure 1] Schematic diagram of a vehicle drive device according to an embodiment [Figure 2] FIG. 2 is an enlarged cross-sectional view of a portion of the vehicle drive device of FIG. 1; [Figure 3] FIG. 2 is a perspective view of the engagement device of FIG. 1; [Figure 4] A diagram showing the space in which the drive gear and driven gear in Figure 3 fit. [Figure 5] FIG. 4 is a cross-sectional view of the case along the rotation axis of the gear rotor of FIG. 3. [Figure 6] FIG. 2 is a cross-sectional view of an axial oil supply passage in the vehicle drive device of FIG. 1; [Figure 7] 2 is a diagram showing an inlet of an axial oil supply passage in the vehicle drive device of FIG. 1; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] A vehicle drive device 10 according to an embodiment will be described below with reference to the drawings. Fig. 1 is a diagram showing an example of a vehicle drive device 10 and a vehicle 100 on which the vehicle drive device 10 is mounted.

[0010] The vehicle 100 is equipped with a wheel drive source 11 that drives the wheels 18. Examples of the wheel drive source 11 include an internal combustion engine such as a gasoline engine or a diesel engine, a rotating electric machine, and the like.

[0011] Examples of vehicle 100 include a two-wheel vehicle, a four-wheel vehicle, a vehicle that uses only an internal combustion engine or a rotating electric motor as the wheel drive source 11, a hybrid electric vehicle (HEV) that uses one internal combustion engine and one rotating electric motor as the wheel drive source 11, and a vehicle that uses an in-wheel motor as the wheel drive source 11.

[0012] In this embodiment, the vehicle drive device 10 is mounted on a vehicle 100, which is a hybrid electric vehicle equipped with a wheel drive source 11, a first rotating electric machine MG1, and a second rotating electric machine MG2. In this embodiment, the wheel drive source 11 is a prime mover (such as a gasoline engine or a diesel engine) that is driven by the combustion of fuel to extract power.

[0013] Each of the first rotating electric machine MG1 and the second rotating electric machine MG2 has a function as a motor (electric motor) that receives a supply of electric power to generate power, and a function as a generator (electric power generator) that receives a supply of power to generate power. In this embodiment, the first rotating electric machine MG1 corresponds to the "rotating electric machine", but the second rotating electric machine MG2 may also correspond to the "rotating electric machine". In this embodiment, the "first rotor RT1" corresponds to the "rotor", but the "second rotor RT2" may also correspond to the "rotor".

[0014] The first rotating electrical machine MG1 includes a first stator ST1 and a first rotor RT1. The first stator ST1 is fixed to a non-rotating member. The first rotor RT1 is supported rotatably relative to the first stator ST1. In the illustrated example, the non-rotating member is a case 16, which will be described later.

[0015] The second rotating electrical machine MG2 includes a second stator ST2 and a second rotor RT2. The second stator ST2 is fixed to a non-rotating member. The second rotor RT2 is supported rotatably relative to the second stator ST2. In the illustrated example, the non-rotating member is a case 16, which will be described later.

[0016] The vehicle drive device 10 includes an input member 13. The input member 13 is drivingly connected to a wheel drive source 11 that is a drive source for wheels 18. In this embodiment, the input member 13 is an input shaft formed to extend along the axial direction B.

[0017] In this embodiment, the input member 13 is drivingly connected to the wheel drive source 11 via a damper device 12. The damper device 12 transmits the rotation of the output shaft of the wheel drive source 11 to the input member 13 while damping torsional vibrations from the output shaft of the wheel drive source 11.

[0018] The vehicle drive device 10 includes an output member 15. The output member 15 is drivingly connected to wheels 18. In the illustrated example, a differential input gear functions as the output member 15, but it may also be a drive shaft of an in-wheel motor.

[0019] Here, in this application, 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, and includes a state in which the two rotating elements are connected so as to rotate integrally, or a state in which the two rotating elements are connected so as to be able to transmit a driving force via one or more transmission members. Such transmission members include various members that transmit rotation at the same speed or at a variable speed, such as shafts, gear mechanisms, belts, and chains. Note that transmission members may also include engagement devices that selectively transmit rotation and driving force, such as friction engagement devices and meshing engagement devices. However, when the term "driving connection" is used to refer to the rotating elements of a planetary gear mechanism, it refers to a state in which they are connected to each other without any other rotating elements passing through them.

[0020] Here, the rotational axis of the first rotor of the first rotating electric machine MG1 is defined as the rotational axis X1. In this embodiment, the input member 13 rotates around the rotational axis X1. Hereinafter, the direction along the rotational axis X1 will be referred to as the "axial direction B." One side of the axial direction B will be referred to as the "axial first side B1," and the other side of the axial direction B will be referred to as the "axial second side B2." Furthermore, the direction perpendicular to the rotational axis X1 will be referred to as the "radial direction R."

[0021] The vehicle drive device 10 includes a power transmission mechanism 20. In this embodiment, the power transmission mechanism 20 is the power transmission mechanism 20 of the vehicle 100, which is a hybrid electric vehicle, but it may also be the power transmission mechanism 20 of a vehicle 100 in which only an internal combustion engine or a rotating electric machine serves as the wheel drive source 11. The power transmission mechanism 20 is configured to transmit driving force between an input member 13 and an output member 15. The power transmission mechanism 20 is configured to transmit power between the first rotor RT1 and the output member 15.

[0022] The vehicle drive device 10 includes a case 16 that houses the first rotating electric machine MG1 and the power transmission mechanism 20. The case 16 includes a first housing chamber 16a. The first housing chamber 16a houses the first rotating electric machine MG1. The case 16 includes a second housing chamber 16b. The second housing chamber 16b houses at least a part of a reduction mechanism 47, which will be described later. In this embodiment, the second housing chamber 16b houses a rack gear 49 and a pinion 53, which will be described later. The second housing chamber 16b communicates with the first housing chamber 16a.

[0023] The case 16 includes a third housing chamber 16c that houses at least a part of the power transmission mechanism 20. In this embodiment, the third housing chamber 16c houses the input member 13, the output member 15, and an output differential gear mechanism 38 (described later). The third housing chamber 16c communicates with the second housing chamber 16b.

[0024] The power transmission mechanism 20 includes a first member 21 and a second member 22. The first member 21 and the second member 22 are arranged coaxially with each other. In this embodiment, the first member 21 and the second member 22 are arranged on the rotation axis X1. In this embodiment, the first member 21 is formed in a cylindrical shape with the rotation axis X1 as its axis.

[0025] The power transmission mechanism 20 includes a meshing engagement device 30. The engagement device 30 is a meshing engagement device that engages and disengages the first member 21 and the second member 22. Therefore, when the first member 21 and the second member 22 are engaged, the first member 21 and the second member 22 are connected to each other so as to rotate integrally. On the other hand, when the engagement between the first member 21 and the second member 22 is released, the first member 21 and the second member 22 are allowed to rotate relatively to each other.

[0026] The engagement device 30 includes a first engaged portion 31. The first engaged portion 31 is provided on the first member 21. In this embodiment, the first engaged portion 31 is a plurality of splines that extend along the axial direction B and are distributed in the circumferential direction around the rotation axis X1.

[0027] The engagement device 30 includes a second engaged portion 32. The second engaged portion 32 is provided on the second member 22. In this embodiment, the second engaged portion 32 is a plurality of splines that extend along the axial direction B and are distributed around the rotation axis X1 in the circumferential direction.

[0028] The engagement device 30 includes a rotating member 35. The rotating member 35 is rotatable about a rotation axis X1. The rotating member 35 is movable in the axial direction B relative to the first engaged portion 31 and the second engaged portion 32.

[0029] The rotating member 35 has engaging portions 35d that engage with the first engaged portion 31 and the second engaged portion 32. In this embodiment, the rotating member 35 is formed in a cylindrical shape with the rotation axis X1 as its axis. The engaging portions 35d are provided on the inner circumferential surface of the rotating member 35. In this embodiment, the engaging portions 35d are a plurality of splines that extend along the axial direction B and are distributed around the rotation axis X1.

[0030] The power transmission mechanism 20 includes a first gear G1, a second gear G2, a third gear G3, and a fourth gear G4. The first gear G1 is disposed on the rotation axis X1.

[0031] In this embodiment, a first engaged portion 31 is formed on the outer peripheral surface of the first member 21. In this embodiment, the first gear G1 is disposed adjacent to the first member 21 on the first axial side B1. A second engaged portion 32 is provided on the first gear G1. In this embodiment, the first gear G1 corresponds to the second member 22.

[0032] The second gear G2 is disposed on a second axis X2 that is separate from the rotation axis X1 and the fourth axis X4. The second gear G2 meshes with the first gear G1.

[0033] The third gear G3 is disposed on the second axis X2. The third gear G3 is connected to the second gear G2 so as to rotate integrally with the second gear G2. The third gear G3 meshes with a differential input gear that functions as the output member 15. In this embodiment, the third gear G3 is formed to have a smaller diameter than the second gear G2. The third gear G3 is also disposed closer to the second axial side B2 than the second gear G2.

[0034] The fourth gear G4 is disposed on a third axis X3, which is separate from the rotation axis X1, the fourth axis X4, and the second axis X2. The fourth gear G4 meshes with the second gear G2. The fourth gear G4 is drivingly connected to the second rotating electrical machine MG2.

[0035] The power transmission mechanism 20 includes a distribution differential gear mechanism 37. The distribution differential gear mechanism 37 includes a first rotating element E1, a second rotating element E2, and a third rotating element E3. The order of rotational speeds of these rotating elements is first rotating element E1, second rotating element E2, and third rotating element E3. Here, the "order of rotational speeds" refers to the order of rotational speeds in the rotational state of each rotating element. The rotational speed of each rotating element changes depending on the state of the differential gear mechanism, but the order of high and low rotational speeds of each rotating element is constant because it is determined by the structure of the differential gear mechanism.

[0036] The first rotating element E1 is drivingly connected to the first rotating electric machine MG1. The second rotating element E2 is drivingly connected to the input member 13. The third rotating element E3 is drivingly connected to the output member 15 via the power transmission mechanism 20.

[0037] In this embodiment, the distribution differential gear mechanism 37 is configured as a planetary gear mechanism, and the first rotating element E1, the second rotating element E2, and the third rotating element E3 are a sun gear, a carrier, and a ring gear, respectively.

[0038] In this embodiment, the distribution differential gear mechanism 37 is configured as a single-pinion planetary gear mechanism. The second rotating element E2 as a carrier supports a pinion gear that meshes with both the first rotating element E1 as a sun gear and the third rotating element E3 as a ring gear.

[0039] In this embodiment, the first rotor RT1 and the first rotating element E1 are connected to rotate integrally. In this embodiment, the second rotor RT2 and the fourth gear G4 are connected to rotate integrally.

[0040] The power transmission mechanism 20 includes a third member 23. In this embodiment, the case 16 includes a side wall portion adjacent to the first axial side B1 of the first member 21. In this embodiment, this side wall portion corresponds to the third member 23.

[0041] The third member 23 is provided with a third engaged portion 33. In this embodiment, the third engaged portion 33 is a plurality of splines that extend along the axial direction B and are distributed in the circumferential direction around the rotation axis X1. In this embodiment, the second member 22, the first member 21, and the third member 23 are arranged side by side in the axial direction B in the order described.

[0042] In this embodiment, the power transmission mechanism 20 has a pair of engagement devices 30 arranged side by side in the axial direction B. The pair of engagement devices 30 share a first engaged portion 31 and a rotating member 35. In the illustrated example, the second engaged portion 32, the first engaged portion 31, and the third engaged portion 33 are arranged side by side in the axial direction B in the order shown.

[0043] The rotating member 35 changes between a first state and a third state by moving in the axial direction B. The "first state" is a state in which the rotating member 35 is engaged with both the first engaged portion 31 and the second engaged portion 32. The "third state" is a state in which the engagement between the rotating member 35 and the second engaged portion 32 is released.

[0044] In this embodiment, the rotating member 35 changes between a second state and a fourth state by moving in the axial direction B. The "second state" is a state in which the rotating member 35 is engaged with both the first engaged portion 31 and the third engaged portion 33. The "fourth state" is a state in which the engagement between the rotating member 35 and the third engaged portion 33 is released.

[0045] Here, of the pair of engagement devices 30, the one arranged on the first axial side B1 is referred to as the first engagement device 30a, and the one arranged on the second axial side B2 is referred to as the second engagement device 30b. In this embodiment, when the first engagement device 30a is in the first state, the second engagement device 30b is in the fourth state. Also, when the second engagement device 30b is in the second state, the first engagement device 30a is in the third state.

[0046] In this embodiment, when the engaging portion 35d of the rotating member 35 is engaged with both the first engaged portion 31 and the second engaged portion 32 (first state), the engaging portion 35d is disengaged from the third engaged portion 33. In this case, the third rotating element E3 and the first gear G1 of the distribution differential gear mechanism 37 are coupled to rotate integrally. As a result, the driving force of the internal combustion engine is transmitted by the distribution differential gear mechanism 37 to the first rotating electric machine MG1 and also to the output member 15 via the first gear G1, the second gear G2, and the third gear G3. In addition, the driving force of the second rotating electric machine MG2 is transmitted to the output member 15 via the fourth gear G4, the second gear G2, and the third gear G3.

[0047] In this embodiment, when the engaging portion 35d of the rotating member 35 is in a state (second state) in which it is engaged with both the first engaged portion 31 and the third engaged portion 33, the engaging portion 35d is disengaged from the second engaged portion 32. In this case, power transmission between the third rotating element E3 and the first gear G1 of the distribution differential gear mechanism 37 is interrupted, and the third rotating element E3 is fixed to the case 16. As a result, the driving force of the internal combustion engine is transmitted to the first rotating electric machine MG1 via the distribution differential gear mechanism 37 without being transmitted to the output member 15, and the first rotating electric machine MG1 generates electricity using this driving force. In addition, the driving force of the second rotating electric machine MG2 is transmitted to the output member 15 via the fourth gear G4, the second gear G2, and the third gear G3.

[0048] In this embodiment, the rotating member 35 is configured to move in the axial direction B while maintaining a state in which the engaging portion 35d is engaged with the first engaged portion 31. The rotating member 35 is configured to be able to enter a state in which the engaging portion 35d is disengaged from both the second engaged portion 32 and the third engaged portion 33. In other words, the first engaging device 30a can be in the third state, and the second engaging device 30b can be in the fourth state.

[0049] The vehicle drive device 10 includes an output differential gear mechanism 38. The output differential gear mechanism 38 is configured to distribute the rotation of the output member 15 to a pair of wheels 18. The output differential gear mechanism 38 is disposed on a fourth axis X4 that is separate from the rotation axis X1. In this embodiment, the output differential gear mechanism 38 includes a differential input gear. The differential input gear functions as the output member 15.

[0050] 2 is a diagram showing an example of a cross section of the vehicle drive device 10 taken along the axial direction B. The case 16 houses the first rotating electric machine MG1 and the power transmission mechanism 20. The engagement device 30 includes a detent mechanism 39 for maintaining the position of the rotating member 35 in the axial direction B. The detent mechanism 39 includes a detent groove portion 39a, a spherical body 39b, and a biasing member 39c.

[0051] 3 is a perspective view showing an example of the engagement device 30. The engagement device 30 includes a driven member 41. The driven member 41 is driven to switch the transmission state of the driving force in the power transmission mechanism 20.

[0052] The driven member 41 includes the above-described rotating member 35 (see FIG. 1). The rotating member 35 is rotatable about a rotation axis X1, and switches the transmission state of the driving force in the power transmission mechanism 20 by moving in the axial direction B. In this embodiment, the rotating member 35 is a sleeve.

[0053] The driven member 41 includes a moving member 43. The moving member 43 is engaged with the rotating member 35 in a state where relative movement therebetween in the axial direction B is restricted. The moving member 43 is allowed to rotate relative to the rotating member 35 about the rotation axis X1. In this embodiment, the moving member 43 is a shift fork.

[0054] The engagement device 30 includes a drive mechanism 45 that drives the driven member 41. The drive mechanism 45 drives the driven member 41 in the axial direction B. The drive mechanism 45 drives the moving member 43 of the driven member 41 in the axial direction B, thereby moving the rotating member 35 in the axial direction B via the moving member 43.

[0055] The drive mechanism 45 includes an engagement drive source 46 that is a drive source for the engagement device 30. Examples of the engagement drive source 46 include a rotating electric machine, an electromagnetic solenoid, a hydraulic cylinder, and a pneumatic cylinder.

[0056] The drive mechanism 45 includes a speed reduction mechanism 47. The speed reduction mechanism 47 reduces the driving force of the engagement drive source 46 and transmits the reduced driving force to the driven member 41. The speed reduction mechanism 47 includes a drive gear 48. The drive gear 48 is driven by the engagement drive source 46. In this embodiment, the rotation axis A1 of the drive gear 48 and the rotation axis of the output shaft of the engagement drive source 46 are coaxial, but they may be different axes.

[0057] The reduction mechanism 47 includes a rack gear 49. The rack gear 49 is connected to the driven member 41. In this embodiment, the rack gear 49 is a straight gear, and the drive gear 48 is a spur gear.

[0058] The reduction mechanism 47 includes a gear rotor 50. Here, the direction along the rotation axis A2 of the gear rotor 50 is referred to as the reduction axis direction L, one side of the reduction axis direction L is referred to as the first reduction axis direction side L1, and the other side of the reduction axis direction L is referred to as the second reduction axis direction side L2. In this embodiment, the reduction axis direction L and the axial direction B are perpendicular to each other, but they do not have to be perpendicular. In this embodiment, the rotation axis A2 of the gear rotor 50 and the rotation axis A1 of the drive gear 48 are parallel to each other, but they do not have to be parallel to each other.

[0059] The gear rotor 50 includes a driven gear 51 that meshes with the drive gear 48. In this embodiment, the driven gear 51 is a spur gear. The gear rotor 50 includes a pinion 53 that meshes with the rack gear 49. In this embodiment, the pinion 53 is a spur gear.

[0060] The gear rotor 50 is disposed on the second side L2 in the reduction shaft direction relative to the engagement drive source 46. The gear rotor 50 is disposed so as to overlap with the engagement drive source 46 when viewed in the axial direction along the reduction shaft direction L. In this embodiment, at least a portion of the gear rotor 50 and at least a portion of the engagement drive source 46 overlap when viewed in the axial direction.

[0061] Fig. 4 is a diagram showing an example of a space 90 that accommodates the driven gear 51. In Fig. 4, the drive gear 48 that meshes with the driven gear 51 and the engagement drive source 46 are shown by two-dot chain lines.

[0062] Here, the direction connecting the rotational axis A1 of the drive gear 48 and the rotational axis A2 of the gear rotor 50 as viewed in the axial direction along the reduction shaft L is defined as the meshing direction Y. The side of the drive gear 48 on which the driven gear 51 is arranged in the meshing direction Y is defined as the meshing direction first side Y1. The side of the drive gear 48 on which the driven gear 51 is arranged in the meshing direction Y is defined as the meshing direction second side Y2. The direction perpendicular to the meshing direction Y as viewed in the axial direction is defined as the meshing direction orthogonal direction V. In this embodiment, the rotational axis A1 is arranged on the upper side Z1 in the vertical direction Z than the rotational axis A2.

[0063] Fig. 5 is a diagram showing an example of a cross section of the case 16 along the rotation axis A2 of the gear rotor 50. Fig. 6 is a diagram showing an example of a cross section of the case 16 and the restricting member 60, and is a diagram showing a cross section on the first axial side B1 than Fig. 5. Fig. 7 is a diagram showing an example of a cross section of the case 16, and is a diagram showing a cross section on the first axial side B1 than Fig. 6.

[0064] 5, the gear rotor 50 includes a connecting shaft 52 that connects a driven gear 51 and a pinion 53. In this embodiment, the connecting shaft 52 is supported by a support portion 16h formed on the case 16 so as to be rotatable about a rotation axis A2.

[0065] A second end 50b of the gear rotor 50, which is an end on the second side L2 in the reduction shaft direction, is rotatably supported about the rotation axis A2 by the case 16. The second end 50b is supported by the case 16 by being inserted into a hole or recess formed in the wall surface of the case 16. In this embodiment, the gear rotor 50 and the case 16 slide against each other to be rotatably supported about the rotation axis A2, but the gear rotor 50 may also be rotatably supported about the rotation axis A2 by the case 16 via a bearing.

[0066] The gear rotor 50 is rotatably supported in a state where movement toward the second side L2 in the reduction shaft direction is restricted relative to the case 16 that houses the power transmission mechanism 20. In this embodiment, a restricting portion 16e that restricts movement of the gear rotor 50 toward the second side L2 in the reduction shaft direction is provided on the case 16. The restricting portion 16e is a wall surface that faces the side surface of the driven gear 51 on the second side L2 in the reduction shaft direction.

[0067] As shown in Fig. 6, the reduction gear mechanism 47 includes a restricting member 60 that restricts movement of the gear rotor 50 toward the first side L1 in the reduction shaft direction. In the example shown in Fig. 3, the restricting member 60 is a plate-shaped member. The restricting member 60 is disposed so as to overlap with the drive gear 48 when viewed along the meshing direction Y.

[0068] In this embodiment, the restricting member 60 is arranged so as not to overlap with the rotation axis A1 of the drive gear 48 when viewed in the axial direction along the reduction shaft direction L. In the illustrated example, the restricting member 60 is arranged so as not to overlap with the drive gear 48 when viewed in the axial direction along the reduction shaft direction L.

[0069] 6, the restricting member 60 is disposed between the gear rotor 50 and the engagement drive source 46 in the reduction shaft direction L so as to face a first end 50a, which is an end of the gear rotor 50 on a first side L1 in the reduction shaft direction. Depending on the shape of the gear rotor 50, examples of the first end 50a include an end face of the driven gear 51, an end face of the connecting shaft 52, and an end face of the pinion 53.

[0070] 3 and 4, the regulating member 60 is disposed so as to surround the drive gear 48 from the first side Y1 in the meshing direction. In this embodiment, the regulating member 60 is formed in an L-shape when viewed in the axial direction, but may be formed in a V-shape, an arc shape, or the like.

[0071] The restricting member 60 is disposed so as not to surround at least a portion of the second meshing direction side Y2 of the drive gear 48. The restricting member 60 has an opening 61 that opens toward the first meshing direction side Y1 of the drive gear 48. The dimension of the opening 61 in the meshing orthogonal direction V is larger than the outer diameter of the drive gear 48.

[0072] The restricting member 60 has a fixed portion 63. The fixed portion 63 is fixed to a non-rotating member. Examples of the fixed portion 63 include a fastening portion, a welded portion, an adhesive portion, and a fitting portion. Examples of the non-rotating member include the case 16, the case of a rotating electrical machine, a stator, etc.

[0073] The regulating member 60 has a plurality of fixing portions 63. In this embodiment, the regulating member 60 has a pair of fixing portions 63 arranged separately on both sides of the drive gear 48 in the meshing orthogonal direction V when viewed in the axial direction along the reduction shaft direction L. The pair of fixing portions 63 are fixed to a case 16 that houses the power transmission mechanism 20. In this embodiment, the fixing portions 63 are fixed to protrusions 16g provided on a wall surface 16f of the case 16.

[0074] In this embodiment, at least a portion of the fixed portion 63 overlaps with at least a portion of the drive gear 48 when viewed in the meshing orthogonal direction V. In the illustrated example, at least a portion of the fixed portion 63 overlaps with the rotation axis A1 of the drive gear 48 when viewed in the meshing orthogonal direction.

[0075] 6, the restricting member 60 includes a support portion 65 disposed at a position overlapping with the rotation axis A2 of the gear rotor 50 when viewed in the axial direction along the reduction shaft direction L. The support portion 65 is disposed so as to come into contact with the first end portion 50a when the gear rotor 50 moves to the first side L1 in the reduction shaft direction. In the illustrated example, the support portion 65 is disposed so as to face the first end portion 50a of the gear rotor 50.

[0076] In this embodiment, the support portion 65 is formed in a plate shape along a direction perpendicular to the rotation axis A2 of the gear rotor 50. The support portion 65 is disposed at a position overlapping at least a portion of the gear rotor 50 when viewed in the axial direction along the reduction shaft L.

[0077] The support portion 65 is arranged closer to the first side L1 in the reduction shaft direction than the surface of the second side L2 in the reduction shaft direction of the fixed portion 63. In this embodiment, the support portion 65 is arranged closer to the first side L1 in the reduction shaft direction than the surface of the first side L1 in the reduction shaft direction of the fixed portion 63. The support portion 65 is arranged closer to the first side L1 in the reduction shaft direction than the surface of the gear rotating body 50 on the first side L1 in the reduction shaft direction.

[0078] The restricting member 60 has a convex portion 68 that protrudes toward the second side L2 in the reduction shaft direction. The convex portion 68 is disposed at a position overlapping with the rotation axis A2 of the gear rotor 50 when viewed in the axial direction along the reduction shaft direction L. In this embodiment, the most protruding position of the convex portion 68 and the rotation axis A2 of the gear rotor 50 are disposed coaxially. In this embodiment, the support portion 65 has the convex portion 68.

[0079] The restricting member 60 is formed in a plate shape along a direction perpendicular to the rotation axis A1 of the drive gear 48. In this embodiment, a concave portion is formed on the surface of the plate-shaped support portion 65 on the first side L1 in the reduction shaft direction, and a convex portion 68 is formed on the surface of the support portion 65 on the second side L2 in the reduction shaft direction.

[0080] In this embodiment, the gear rotor 50 is positioned so that the first end 50a, which is the end on the first side L1 in the reduction shaft direction, is lower in the vertical direction Z2 than the second end 50b, which is the end on the second side L2 in the reduction shaft direction.

[0081] The drive mechanism 45 has parts that require lubrication. Examples of parts of the drive mechanism 45 that require lubrication include at least a part of the engagement drive source 46, at least a part of the reduction mechanism 47, at least a part of the gear rotor 50, etc.

[0082] In the present embodiment, target locations, which are at least some of the locations requiring lubrication of the drive mechanism 45, are disposed radially outward from the first rotating electrical machine MG1 in the radial direction R. In the present embodiment, the drive gear 48, the rack gear 49, the first end 50a, the second end 50b, the driven gear 51, the connecting shaft 52, and the pinion 53 are disposed radially outward from the first rotating electrical machine MG1, but the target locations may be any one or two of these. In the example shown in FIG. 2, the rack gear 49 and the pinion 53 are disposed radially outward from the first rotating electrical machine MG1 in the radial direction R.

[0083] In the present embodiment, the arrangement areas in the axial direction B of target locations, which are at least some of the locations requiring lubrication of the drive mechanism 45, are arranged so as to overlap with the arrangement area in the axial direction B of the first rotating electric machine MG1. In the present embodiment, the arrangement areas in the axial direction B of the drive gear 48, rack gear 49, driven gear 51, connecting shaft 52, and pinion 53 shown in FIG. 5 are arranged so as to overlap with the arrangement area in the axial direction B of the first rotating electric machine MG1. Note that the arrangement areas of any one or two of the drive gear 48, rack gear 49, driven gear 51, connecting shaft 52, and pinion 53 may be arranged so as to overlap with the arrangement area in the axial direction B of the first rotating electric machine MG1. In the example shown in FIG. 2, the arrangement areas in the axial direction B of the rack gear 49 and pinion 53 are arranged so as to overlap with the arrangement area in the axial direction B of the first rotating electric machine MG1.

[0084] In this embodiment, the first rotating electric machine MG1 and the second rotating electric machine MG2 are arranged on one side in the axial direction B with respect to the distribution differential gear mechanism 37 of the power transmission mechanism 20. In the example shown in Fig. 2, the first rotating electric machine MG1 is arranged on a first axial side B1 with respect to the distribution differential gear mechanism 37 of the power transmission mechanism 20. In this embodiment, the arrangement area of ​​the target location in the axial direction B and the arrangement area of ​​the distribution differential gear mechanism 37 in the axial direction B do not overlap.

[0085] In this embodiment, an oil supply passage 70 for supplying oil to a target location is formed using the case 16. The entire oil supply passage 70 may be formed by the case 16, or at least a portion of the oil supply passage 70 may be formed by the case 16. Examples of the oil supply passage 70 formed in the case 16 include a through hole formed in the case 16, a groove formed in the case 16, etc.

[0086] The oil supply passage 70 supplies a portion of the oil in the case 16 to a target location. In this embodiment, the oil supply passage 70 supplies a portion of the oil supplied to the first rotating electrical machine MG1 in the first housing chamber 16a to the target location. The oil supply passage 70 supplies a portion of the oil supplied to the first rotor RT1 or the first stator ST1 of the first rotating electrical machine MG1 to the target location.

[0087] 5, the oil supply passage 70 includes a restriction portion supply oil passage 72 that supplies oil to a gap 78 between the restriction portion 16e and the gear rotor 50. Oil is supplied to the gap 78 via a groove 72a that the restriction portion supply oil passage 72 has.

[0088] 5, the oil supply passage 70 includes a first oil supply passage 70a that supplies oil to the target location, that is, the driven gear 51. In this embodiment, the first oil supply passage 70a is configured to supply oil to the target locations, that is, the drive gear 48, the driven gear 51, and the connecting shaft 52. In this embodiment, the first oil supply passage 70a includes a restriction portion supply passage 72, and a portion of the oil that has passed through the gap 78 is supplied between the connecting shaft 52 and the support portion 16h.

[0089] 5, the first oil supply passage 70a is configured to supply oil stored in a driven gear side reservoir 80a (described later) to a target location, and the first oil supply passage 70a is configured to supply oil to a second reservoir 82 (described later).

[0090] 6 and 7, the oil supply passage 70 includes a second oil supply passage 70b that supplies oil to the target location, that is, the pinion 53. In this embodiment, the second oil supply passage 70b supplies oil to the target locations, that is, the rack gear 49, the pinion 53, and the second end portion 50b. The second oil supply passage 70b is configured to supply oil stored in a pinion-side reservoir 80b (described later) to the target location.

[0091] As shown in FIG. 7, the vehicle drive device 10 includes a first storage section 80 that stores oil. In this embodiment, the first storage section 80 is formed in the first housing chamber 16a. The first storage section 80 is formed by the case 16. The first storage section 80 stores oil supplied to the first rotating electric machine MG1. In this embodiment, a portion of the oil in the case 16 is supplied to the first storage section 80 by the centrifugal force of the first rotor RT1. The oil supply passage 70 is configured to supply the oil stored in the first storage section 80 to a target location.

[0092] The first storage section 80 is disposed at a height Z1 above the target locations in the first storage chamber 16a. In the present embodiment, the first storage section 80 is disposed at a height Z1 above at least one of the target locations, but the first storage section 80 may be disposed at a height Z1 above all of the target locations. In the present embodiment, the driven gear 51 is disposed below the first storage section 80 Z2, but a portion of the driven gear 51 may be disposed above the first storage section 80 Z1.

[0093] 5, the first reservoir 80 includes a driven gear side reservoir 80a for supplying oil to the driven gear 51. The driven gear side reservoir 80a is disposed on the second side L2 in the reduction shaft direction relative to the driven gear 51. The driven gear side reservoir 80a is disposed at a height Z1 above the driven gear 51.

[0094] 7, the first reservoir 80 includes a pinion-side reservoir 80b for supplying oil to the pinion 53. The pinion-side reservoir 80b is disposed on the second side L2 in the reduction shaft direction relative to the pinion 53. The pinion-side reservoir 80b is disposed at a height Z1 above the rack gear 49.

[0095] 4 and 5, the vehicle drive device 10 includes a second reservoir 82 that stores oil supplied from the oil supply passage 70 in a space 90 that accommodates the drive gear 48 and the driven gear 51. The space 90 is a space sandwiched between the wall surface 16f of the case 16, which rotatably supports the connecting shaft 52, and the engagement drive source 46. The second reservoir 82 is formed by making at least a portion of the space 90 oil-tight between the wall surface 16f of the case 16 and a case (not shown) of the engagement drive source 46. At least a portion of the second reservoir 82 is formed by the case 16.

[0096] The second reservoir 82 stores the oil that has passed through the first reservoir 80. In this embodiment, the second reservoir 82 stores the oil that has passed through the driven gear side reservoir 80a. The oil stored in the second reservoir 82 is scooped up by one of the drive gear 48 and the driven gear 51 and supplied to the other.

[0097] The second reservoir 82 stores the oil that has passed through the gap 78. In the present embodiment, the oil supplied between the connecting shaft 52 and the support portion 16h is also stored in the second reservoir 82, but the oil may be supplied to the pinion 53 side without being stored in the second reservoir 82.

[0098] As shown in Figures 4 and 5, the space 90 is a space between the wall surface 16f of the case 16 and the engagement drive source 46 in the reduction shaft direction L. A discharge hole 83 for discharging oil from the space 90 is provided in the space 90. The discharge hole 83 is arranged on the upper side Z1 of at least a part of the drive gear 48 or at least a part of the driven gear 51. The discharge hole 83 is arranged on the lower side Z2 of the rotation axis A1 of the drive gear 48 or the rotation axis A2 of the driven gear 51. The oil discharged from the discharge hole 83 is supplied to the first housing chamber 16a, the third housing chamber 16c, a drain, etc. The discharge hole 83 is a hole for discharging oil from the space 90 when the oil level in the space 90 rises.

[0099] According to the above-mentioned vehicle drive device 10, even if the target location is far from the rotating elements of the power transmission mechanism 20 (e.g., the first rotating element E1, the second rotating element E2, the third rotating element E3, and the rotating member 35) via the oil supply passage 70, the oil supplied to the first rotating electric machine MG1 can be efficiently collected in the first housing 16a and supplied to the target location.

[0100] According to the vehicle drive device 10 described above, the case 16 and the restricting member 60 can be separate bodies. This increases the degree of freedom in arranging the gear rotor 50 relative to the case 16. Furthermore, for example, after the pinion 53 of the gear rotor 50 is meshed with the rack gear 49, the restricting member 60 can restrict movement of the gear rotor 50 toward the first side L1 in the reduction shaft direction before closing a lid or the like of the case 16, thereby increasing the degree of freedom in the assembly process of the vehicle drive device 10.

[0101] According to the vehicle drive device 10 described above, the case 16 and the restricting member 60 can be made of different materials. In this way, for example, by forming the restricting member 60 from a material that is more wear-resistant than the case 16, it is easy to suppress the generation of wear powder due to the rotation of the gear rotating body 50.

[0102] According to the vehicle drive device 10 described above, for example, the case of the engagement drive source 46 and the regulating member 60 can be made of different materials. In this way, by forming the regulating member 60 from a material that is more wear-resistant than the case of the engagement drive source 46, it is easier to suppress the generation of wear powder due to the rotation of the gear rotating body 50.

[0103] Other Embodiments Next, other embodiments of the vehicle drive device 10 will be described.

[0104] (1) In the above embodiment, the rotational axis of the first rotor RT1 of the first rotating electric machine MG1 is the rotational axis X1, and the input member 13 and the rotating member 35 rotate around the rotational axis X1. However, without being limited to such an example, for example, the rotational axis of the input member 13 may be different from the rotational axis X1. Furthermore, for example, the rotational axis of the second rotor RT2 of the second rotating electric machine MG2 may be the rotational axis X1, and the rotational axis of the first rotor RT1 of the rotating member 35 may be different from the rotational axis X1.

[0105] (2) In the above embodiment, the first storage section 80 is disposed at a height above Z1 the target location in the first storage chamber 16a. However, the present invention is not limited to such an example. For example, the first storage section 80 may be disposed at the same height as the target location or below Z2 the target location. Furthermore, for example, the first storage section 80 may be disposed in the third storage chamber 16c. Furthermore, for example, the vehicle drive device 10 may not include the first storage section 80.

[0106] (3) In the above embodiment, a configuration has been described as an example in which the target location, which is at least a part of the reduction mechanism 47, is accommodated in the second accommodation chamber 16b, which is disposed outside the first accommodation chamber 16a in the radial direction R. However, the present invention is not limited to such an example. For example, at least a part of the reduction mechanism 47 may not be accommodated in the second accommodation chamber 16b. Furthermore, for example, the drive mechanism 45 may not include the reduction mechanism 47.

[0107] (4) In the above embodiment, the second reservoir 82 that stores oil supplied from the oil supply passage 70 is formed in the space 90 sandwiched between the wall of the case 16 and the engagement drive source 46 in the reduction shaft direction L. However, the present invention is not limited to such an example. For example, the second reservoir 82 does not have to be formed in the space 90. Also, for example, the space 90 that houses the drive gear 48 and the driven gear 51 may be a space sandwiched between two walls of the case 16 that are opposed to each other in the reduction shaft direction L. Also, for example, the vehicle drive device 10 does not have to include the second reservoir 82.

[0108] (5) In the above embodiment, the case 16 has been described as having the first housing chamber 16a, the second housing chamber 16b, and the third housing chamber 16c. However, the present invention is not limited to such an example. For example, the power transmission mechanism 20 and the reduction mechanism 47 may be housed in the first housing chamber 16a housing the first rotating electric machine MG1. Furthermore, for example, the case 16 may not have the second housing chamber 16b or the third housing chamber 16c.

[0109] (6) In the above embodiment, the oil supply passage 70 supplies a portion of the oil supplied to the first rotor RT1 or the first stator ST1 of the first rotating electrical machine MG1 in the first housing chamber 16a to the target location. However, the present invention is not limited to such an example. For example, the oil supply passage 70 may supply a portion of the oil supplied to the power transmission mechanism 20 in the third housing chamber 16c to the target location. Furthermore, for example, the oil supply passage 70 may be branched to supply a portion of the oil intended for the first rotating electrical machine MG1 or the power transmission mechanism 20 to the target location.

[0110] (7) In the above embodiment, a configuration has been described as an example in which a portion of the gear rotor 50 and a portion of the engagement drive source 46 overlap in the axial direction. However, the present invention is not limited to such an example. For example, the entire gear rotor 50 and a portion of the engagement drive source 46 may overlap in the axial direction. Furthermore, the gear rotor 50 and the engagement drive source 46 do not have to overlap in the axial direction.

[0111] (8) In the above embodiment, an example has been described in which the target location is disposed radially outward from the first rotating electric machine MG1, and the arrangement area of ​​the target location in the axial direction B is arranged to overlap with the arrangement area of ​​the first rotating electric machine MG1 in the axial direction B. However, the present invention is not limited to such an example, and for example, the arrangement area of ​​the target location in the axial direction B may be arranged so as not to overlap with the arrangement area of ​​the first rotating electric machine MG1 and the arrangement area of ​​the power transmission mechanism 20 in the axial direction B of the first rotating electric machine MG1.

[0112] (9) In the above embodiment, a configuration has been described as an example in which a portion of the oil in the case 16 is supplied to the first storage section 80 by the centrifugal force of the first rotor RT1. However, the present invention is not limited to such an example. For example, a portion of the oil in the case 16 may be supplied to the first storage section 80 by the centrifugal force of a rotating member included in the second rotor RT2 or the power transmission mechanism 20. Furthermore, for example, a portion of the oil in the case 16 may be scooped up by a gear or the like included in any of the first rotor RT1, the second rotor RT2, or the power transmission mechanism 20 and supplied to the first storage section 80.

[0113] (10) In the above embodiment, the gear rotor 50 is disposed so that the first end 50a is located below the second end 50b on the Z2 side. However, the present invention is not limited to such an example. For example, the gear rotor 50 may be disposed so that the first end 50a is located above the second end 50b on the Z1 side. Furthermore, for example, the first end 50a and the second end 50b may be disposed at the same height.

[0114] (11) The configurations disclosed in the above-described embodiments may be combined with configurations disclosed in other embodiments as long as no contradictions arise. Regarding other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications may be made as appropriate within the scope of the present disclosure.

[0115] Summary of the above embodiment Hereinafter, a vehicle drive device according to the present disclosure will be described.

[0116] In one aspect, a vehicle drive device (10) includes rotating electric machines (MG1, MG2) having rotors (RT1, RT2), an output member (15) drivingly connected to wheels (18), a power transmission mechanism (20) that transmits power between the rotors (RT1, RT2) and the output member (15), and a case (16) that houses the rotating electric machines (MG1, MG2) and the power transmission mechanism (20). The power transmission mechanism (20) includes a meshing engagement device (30). The engagement device (30) includes a driven member (41) that is driven to switch the transmission state of the driving force in the power transmission mechanism (20), and a case (16) that houses the driven member (41). The case (16) is provided with a drive mechanism (45) that drives the rotors (RT1, RT2) (41), and the direction along the rotation axis of the rotors (RT1, RT2) is defined as the axial direction (B), and the direction perpendicular to the rotation axis is defined as the radial direction (R). Target locations that are at least some of the locations of the drive mechanism (45) that require lubrication are arranged outside the radial direction (R) relative to the rotating electric machines (MG1, MG2), and the axial (B) placement area of ​​the target locations is arranged so as to overlap with the axial (B) placement area of ​​the rotating electric machines (MG1, MG2). An oil supply passage (70) for supplying some of the oil in the case (16) to the target locations is formed using the case (16).

[0117] In the vehicle drive device (10) of this configuration, the target location of the drive mechanism (45) is disposed radially outward from the rotating electric machines (MG1, MG2) in the R direction, and the target location's axial (B) area is disposed so as to overlap with the axial (B) area of ​​the rotating electric machines (MG1, MG2). Therefore, for example, oil scooped up by gears included in the power transmission mechanism (20) is unlikely to reach the target location. However, according to this configuration, the oil supply passage (70) for supplying a portion of the oil in the case (16) to the target location is formed using the case (16). Therefore, the supply of oil to the drive mechanism (45)'s locations requiring lubrication can be easily achieved with a simple configuration.

[0118] In one embodiment, the oil supply system further includes a first storage section (80) for storing oil, the case (16) includes a first storage chamber (16a) for accommodating a rotating electric machine (MG1), the first storage section (80) is positioned at a height in the first storage chamber (16a) that is above (Z1) the target location, and the oil supply passage (70) is configured to supply the oil stored in the first storage section (80) to the target location.

[0119] According to this configuration, oil in the first housing chamber (16a) housing the rotary electric machine (MG1) can be supplied to the target location through the oil supply passage (70), thereby facilitating appropriate lubrication of the target location.

[0120] In one embodiment, the case (16) has a first storage chamber (16a) that stores the rotating electric machine (MG1), and the drive mechanism (45) has an engagement drive source (46) that is a drive source for the engagement device (30), and a reduction mechanism (47) that reduces the drive force of the engagement drive source (46) and transmits it to the driven member (41), and at least a part of the reduction mechanism (47) is the target location, which is stored in a second storage chamber (16b) that is arranged radially outward from the first storage chamber (16a) in the radial direction (R).

[0121] According to this configuration, oil can be appropriately supplied through the oil supply passage (70) to the target locations of the reduction gear (47) disposed in the second storage chamber (16b), where the oil scooped up by the gears of the power transmission mechanism (20) has difficulty reaching, to lubricate the target locations.

[0122] In one aspect, the drive mechanism (45) includes an engagement drive source (46) that is a drive source for the engagement device (30), and a speed reduction mechanism (47) that reduces the speed of the drive force of the engagement drive source (46) and transmits it to the driven member (41). The speed reduction mechanism (47) includes a drive gear (48) driven by the engagement drive source (46), a rack gear (49) connected to the driven member (41), and a gear rotor (50). The gear rotor (50) is meshed with the drive gear (48). The case (16) includes a driven gear (51) that meshes with the rack gear (49), a pinion (53) that meshes with the rack gear (49), and a connecting shaft (52) that connects the driven gear (51) and the pinion (53). A second reservoir (82) that stores oil supplied from the oil supply passage (70) is formed in a space (90) that is sandwiched between a wall of the case (16) that rotatably supports the connecting shaft (52) and the engagement drive source (46) and that houses the drive gear (48) and the driven gear (51).

[0123] According to this configuration, the drive gear (48) and the driven gear (51) of the reduction gear mechanism (47) can be appropriately lubricated.

[0124] It is sufficient for the vehicle drive device according to the present disclosure to achieve at least one of the above-described effects. [Explanation of symbols]

[0125] 10: vehicle drive device, 15: output member, 16: case, 16a: first housing chamber, 16b: second housing chamber, 18: wheel, 20: power transmission mechanism, 30: engagement device, 41: driven member, 45: drive mechanism, 46: engagement drive source, 47: reduction mechanism, 48: drive gear, 49: rack gear, 50: gear rotor, 51: driven gear, 52: connecting shaft, 53: pinion, 70: supply oil passage, 80: first storage section, 82: second storage section, 90: space, 100: vehicle, A1: rotation axis, A2: rotation axis, B: axial direction, R: radial direction, MG1: first rotating electric machine (rotating electric machine), RT1: first rotor (rotor), X1: rotation axis

Claims

1. a rotating electric machine having a rotor; an output member drivingly connected to the wheels; a power transmission mechanism that transmits power between the rotor and the output member; a case that accommodates the rotating electric machine and the power transmission mechanism; Equipped with the power transmission mechanism includes a meshing engagement device; the engagement device includes a driven member that is driven to switch a transmission state of the driving force in the power transmission mechanism, and a drive mechanism that drives the driven member, A direction along the rotation axis of the rotor is defined as an axial direction, and a direction perpendicular to the rotation axis is defined as a radial direction, a target location that is at least a part of a location requiring lubrication of the drive mechanism is disposed radially outward with respect to the rotating electric machine, and an axial arrangement area of ​​the target location is disposed so as to overlap with an axial arrangement area of ​​the rotating electric machine; A vehicle drive device, wherein an oil supply passage for supplying a portion of the oil in the case to the target location is formed using the case.

2. Further provided is a first reservoir that stores oil, the case includes a first housing chamber in which the rotating electric machine is housed, The first storage section is disposed at a height above the target location in the first storage chamber, The vehicle drive device according to claim 1 , wherein the oil supply passage is configured to supply oil stored in the first storage portion to the target location.

3. the case includes a first housing chamber in which the rotating electric machine is housed, the drive mechanism includes an engagement drive source that is a drive source for the engagement device, and a speed reduction mechanism that reduces the speed of the drive force of the engagement drive source and transmits the reduced speed to the driven member, At least a part of the reduction mechanism is the target location, The vehicle drive device according to claim 1 or 2, wherein the target location is accommodated in a second accommodation chamber that is disposed radially outward relative to the first accommodation chamber.

4. the drive mechanism includes an engagement drive source that is a drive source for the engagement device, and a speed reduction mechanism that reduces the speed of the drive force of the engagement drive source and transmits the reduced speed to the driven member, the reduction mechanism includes a drive gear driven by the engagement drive source, a rack gear connected to the driven member, and a gear rotor; the gear rotor includes a driven gear that meshes with the drive gear, a pinion that meshes with the rack gear, and a connecting shaft that connects the driven gear and the pinion, 3. The vehicle drive device according to claim 1, wherein a second reservoir for storing oil supplied from the oil supply passage is formed in a space sandwiched between the wall of the case that rotatably supports the connecting shaft and the engagement drive source, the space containing the drive gear and the driven gear.

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