JP6964509B2 - Vehicle drive - Google Patents

Description

The present invention is a drive from a rotary electric machine that is a driving force source for a plurality of wheels, an input member that is driven and connected to the rotary electric machine, a counter gear mechanism, and a rotary electric machine that is transmitted via the input member and the counter gear mechanism. The present invention relates to a vehicle drive device including a differential gear device for distributing force to a plurality of wheels and a parking gear.

In Patent Document 1 below, a rotary electric machine (vehicle drive motor 10) serving as a driving force source for a plurality of wheels and an input member (input shaft 33) driven and connected to the rotary electric machine (vehicle drive motor 10) are described. , A differential gear device (differential mechanism) that distributes the driving force from the counter gear mechanism and the rotary electric machine (vehicle drive motor 10) transmitted via the input member (input shaft 33) and the counter gear mechanism to a plurality of wheels. A vehicle drive device (power transmission device 1) including a parking gear (parking operation gear 35) and a parking gear (3) is disclosed. The member names and symbols shown in parentheses in the description of the background technology are those of the references.

In the vehicle drive device (power transmission device 1) of Patent Document 1, a large-diameter gear (first large gear 34) and a small-diameter gear (second small gear 36) provided on the counter shaft (counter shaft 37) of the counter gear mechanism are provided. ), A parking gear (parking operation gear 35) is arranged. That is, three gears, a large-diameter gear (first large gear 34), a small-diameter gear (second small gear 36), and a parking gear (parking operation gear 35), are arranged side by side along the axial direction of the counter gear mechanism. There is. Therefore, the axial length (length in the axial direction) of the counter shaft (counter shaft 37) tends to increase, which may lead to an increase in the size of the vehicle drive device (power transmission device 1) in the axial direction. Further, increasing the size of the vehicle drive device in the axial direction may deteriorate the mountability on the vehicle.

Japanese Unexamined Patent Publication No. 8-230489 (Fig. 1)

Therefore, it is desired to reduce the size of the vehicle drive device in the axial direction.

In view of the above, the characteristic configuration of the vehicle drive device is
A rotating electric machine that is a driving force source for multiple wheels,
With the input member driven and connected to the rotary electric machine,
A counter gear mechanism having a first gear and a second gear,
A differential gear device having a differential input gear and distributing the driving force from the rotary electric machine transmitted to the differential input gear via the input member and the counter gear mechanism to the plurality of wheels.
A drive gear and a parking gear provided on the input member are provided.
The rotary electric machine and the input member are arranged on the first axis, and the rotary electric machine and the input member are arranged on the first axis.
The counter gear mechanism is arranged on a second axis different from the first axis.
The differential gear device is arranged on a third axis different from the first axis and the second axis.
The first gear meshes with the drive gear and
The second gear meshes with the differential input gear and
The parking gear is located at a position overlapping the counter gear mechanism in a radial direction with respect to the first axis.

According to this characteristic configuration, since the parking gear is provided on the input member having the drive gear instead of the counter gear mechanism having the first gear and the second gear, the axial length of the counter gear mechanism is suppressed to be short. It becomes easy. Further, since the parking gear provided on the input member is arranged at a position overlapping the counter gear mechanism in the radial direction with respect to the first axis, the parking gear is installed in the axial direction of the vehicle drive device. There is no increase in length. Therefore, the vehicle drive device can be miniaturized in the axial direction.

The figure which shows the drive device for a vehicle which concerns on embodiment Cross-sectional view of the vehicle drive device according to the embodiment in a plane along a direction orthogonal to the axial direction.

Hereinafter, the vehicle drive device 100 according to the embodiment will be described with reference to the drawings. The vehicle drive device 100 is, for example, a drive device mounted on a hybrid vehicle in which an internal combustion engine and a rotary electric machine are used as a driving force source for a plurality of wheels, and an electric vehicle in which a rotary electric machine is used as a driving force source for a plurality of wheels. .. In the present embodiment, as shown in FIG. 1, the vehicle drive device 100 includes only a rotary electric machine 1 as a drive force source for the first wheel W1 and the second wheel W2. In the case of a two-wheel drive four-wheel drive vehicle, this makes it possible to realize an electric vehicle. Further, in the case of a four-wheel drive four-wheel vehicle, a hybrid vehicle can be realized by driving the other two wheels with the driving force of an internal combustion engine. Of course, in the case of a four-wheel drive four-wheel drive vehicle, a four-wheel drive electric vehicle can also be realized by applying the vehicle drive device 100 of the present embodiment to the other two wheels.

In the present application, "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. Further, in the present application, the "driving connection" refers to a state in which two rotating elements are connected so as to be able to transmit a driving force, and a state in which the two rotating elements are connected so as to rotate integrally, or the second. Includes a state in which one rotating element is mutably connected via one or more transmission members so that a driving force can be transmitted. Such transmission members include various members that transmit rotation at the same speed or at different speeds, such as shafts, gear mechanisms, belts, chains, and the like. The transmission member may include an engaging device that selectively transmits rotation and driving force, for example, a friction engaging device, a meshing type engaging device, and the like.

As shown in FIG. 1, the vehicle drive device 100 includes a rotary electric machine 1 that is a driving force source for the first wheel W1 and the second wheel W2, an input member 2 that is driven and connected to the rotary electric machine 1, and a counter gear mechanism. 3 and a differential gear device 4 that distributes the driving force from the rotary electric machine 1 transmitted via the input member 2 and the counter gear mechanism 3 to each of the first wheel W1 and the second wheel W2. .. In the present embodiment, the rotary electric machine 1, the input member 2, the counter gear mechanism 3, and the differential gear device 4 are housed in the case 5.

The rotary electric machine 1 and the input member 2 are arranged on the first axis A1 as their rotation axis, and the counter gear mechanism 3 is arranged on the second axis A2 as its rotation axis. 4 is arranged on the third axis A3 as its rotation axis. The first axis A1, the second axis A2, and the third axis A3 are virtual axes that are different from each other and are arranged in parallel with each other.
In the following description, the direction parallel to the axes A1 to A3 will be referred to as the "axial direction L" of the vehicle drive device 100. Then, in the axial direction L, the side from the rotary electric machine 1 toward the input member 2 is referred to as "axial direction first side L1", and the side from the input member 2 toward the rotary electric machine 1 is referred to as "axial direction second side L2". Further, the direction orthogonal to each of the first axis A1, the second axis A2, and the third axis A3 is defined as the "diameter direction R" with respect to each axis. When it is not necessary to distinguish which axis is used as a reference, or when it is clear which axis is used as a reference, it may be simply described as "diameter direction R". FIG. 1 shows the radial direction R with respect to the first axis A1. Here, the direction of each member represents the direction in which they are assembled to the vehicle drive device 100.

The case 5 houses a rotary electric machine 1, an input member 2, a counter gear mechanism 3, and a differential gear device 4 inside. The case 5 has a peripheral wall portion 51 that surrounds the outside in these radial directions R. Further, as shown in FIG. 1, the case 5 has a first wall portion 52, a second wall portion 53, and a third wall portion 54 extending along the radial direction R. The first wall portion 52 is arranged on the first side L1 in the axial direction with respect to the input member 2 and the counter gear mechanism 3. The second wall portion 53 is arranged on the second side L2 in the axial direction with respect to the rotary electric machine 1. The third wall portion 54 is arranged between the first wall portion 52 and the second wall portion 53. The internal space of the case 5 formed between the first wall portion 52 and the second wall portion 53 is partitioned by the third wall portion 54. In the space between the first wall portion 52 and the third wall portion 54, the main portion of the input member 2 and the counter gear mechanism 3 are arranged. On the other hand, the rotary electric machine 1 is arranged in the space between the second wall portion 53 and the third wall portion 54.

The rotary electric machine 1 is a driving force source for the first wheel W1 and the second wheel W2. The rotary electric machine 1 includes a stator 11 and a rotor 12. The stator 11 has a cylindrical stator core 111 fixed to the case 5. The rotor 12 has a cylindrical rotor core 121 that is rotatable with respect to the stator 11. In the present embodiment, since the rotary electric machine 1 is a rotating field type rotary electric machine, the stator core 111 is wound with a coil 112, and the rotor core 121 is provided with a permanent magnet. Further, in the present embodiment, since the rotary electric machine 1 is an inner rotor type rotary electric machine, the rotor core 121 is arranged inside the stator core 111 in the radial direction R. Further, a cylindrical rotor shaft 13 extending along the axial direction L is connected to the inner peripheral surface of the rotor core 121. Here, the "cylindrical shape" means that the approximate shape as a whole is a cylinder even if it has a slightly deformed portion (hereinafter, the shape and the like are used with a "shape". The same applies to the expression of).

The rotor shaft 13 rotates around the first shaft A1 integrally with the rotor 12. The rotor shaft 13 extends along the axial direction L so as to project from both end faces of the rotor core 121 in the axial direction L. The end portion of the rotor shaft 13 on the first side L1 in the axial direction is rotatably supported by the third wall portion 54 of the case 5 via the first rotor bearing 91. The end portion of the rotor shaft 13 on the second side L2 in the axial direction is rotatably supported by the second wall portion 53 of the case 5 via the second rotor bearing 92. An input member 2 is connected to the rotor shaft 13, and the rotor shaft 13 and the input member 2 rotate integrally.

The input member 2 is drive-connected to the rotary electric machine 1. Then, the input member 2 rotates around the first shaft A1 integrally with the rotor shaft 13 of the rotary electric machine 1. That is, the rotary electric machine 1 and the input member 2 are arranged on the first axis A1. Further, the input member 2 has a shaft portion 21 and a drive gear 22.

The shaft portion 21 is formed in a cylindrical shape and extends along the axial direction L. The end of the axial second side L2 of the shaft portion 21 is connected to the end of the rotor shaft 13 on the axial first side L1. In the present embodiment, the end of the axial second side L2 of the shaft portion 21 is the end of the axial first side L1 of the rotor shaft 13 so that the shaft portion 21 is located inside the radial direction R of the rotor shaft 13. It is inserted into a portion, and the ends thereof are connected to each other by spline engagement. The end portion of the shaft portion 21 on the first side L1 in the axial direction is rotatably supported by the first wall portion 52 of the case 5 via the first input bearing 93. Further, the portion of the shaft portion 21 on the first side L1 in the axial direction with respect to the connecting portion with the rotor shaft 13 is rotatably supported by the third wall portion 54 of the case 5 via the second input bearing 94. There is.

The drive gear 22 is a gear that transmits the driving force from the rotary electric machine 1 to the counter gear mechanism 3. The drive gear 22 is provided on the shaft portion 21. The drive gear 22 is arranged between the first input bearing 93 and the second input bearing 94. In the present embodiment, the drive gear 22 is arranged so as to be adjacent to the second side L2 in the axial direction with respect to the first input bearing 93. Then, in the present embodiment, the drive gear 22 is integrally formed with the shaft portion 21. Further, the shaft portion 21 of the input member 2 is provided with a parking gear 6 in addition to the drive gear 22. The detailed configuration of the parking gear 6 will be described later.

The counter gear mechanism 3 is arranged between the input member 2 and the differential gear device 4 in the driving force transmission path. The counter gear mechanism 3 rotates around a second axis A2, which is different from the first axis A1 which is the rotation axis of the rotary electric machine 1 and the input member 2. That is, the counter gear mechanism 3 is arranged on the second axis A2, which is different from the first axis A1. The counter gear mechanism 3 has a counter shaft 31, a first gear 32, and a second gear 33.

The counter shaft 31 extends along the axial direction L. The end portion of the counter shaft 31 on the first side L1 in the axial direction is rotatably supported by the first wall portion 52 of the case 5 via the first counter bearing 95. The end portion of the counter shaft 31 on the second side L2 in the axial direction is rotatably supported by the third wall portion 54 of the case 5 via the second counter bearing 96.

The first gear 32 is an input element of the counter gear mechanism 3. The first gear 32 meshes with the drive gear 22 of the input member 2. The first gear 32 is provided on the counter shaft 31 so as to rotate integrally with the counter shaft 31. In the present embodiment, the first gear 32 is connected to the counter shaft 31 by spline engagement so as to rotate integrally with the counter shaft 31. The first gear 32 is located between the first counter bearing 95 and the second counter bearing 96, and is arranged on the first side L1 in the axial direction with respect to the second gear 33. In the present embodiment, the first gear 32 is arranged so as to be adjacent to the second side L2 in the axial direction with respect to the first counter bearing 95.

The second gear 33 is an output element of the counter gear mechanism 3. The second gear 33 meshes with the differential input gear 41 of the differential gear device 4 described later. In the present embodiment, the second gear 33 is formed to have a smaller diameter than the first gear 32. The second gear 33 is provided on the counter shaft 31 so as to rotate integrally with the counter shaft 31. In the present embodiment, the second gear 33 is integrally formed with the counter shaft 31. The second gear 33 is arranged so as to be coaxial with the first gear 32. Further, the second gear 33 is located between the first counter bearing 95 and the second counter bearing 96, and is arranged on the second side L2 in the axial direction with respect to the first gear 32. In the present embodiment, the second gear 33 is arranged so as to be adjacent to the first side L1 in the axial direction with respect to the second counter bearing 96.

The differential gear device 4 transmits the driving force from the rotary electric machine 1 transmitted via the input member 2 and the counter gear mechanism 3 to the first wheels via the first drive shaft DS1 and the second drive shaft DS2, respectively. It is distributed to W1 and the second wheel W2. The differential gear device 4 includes a differential input gear 41, a differential case 42, a pinion shaft 43, a pair of pinion gears 44, and a first side gear 45 and a second side gear 46. In the present embodiment, the pair of pinion gears 44, and the first side gear 45 and the second side gear 46 are all bevel gears. That is, the differential gear device 4 is a bevel gear type differential gear device.

The differential input gear 41 is an input element of the differential gear device 4. The differential input gear 41 meshes with the second gear 33 of the counter gear mechanism 3. The differential input gear 41 rotates around a third axis A3, which is different from the first axis A1 which is the rotation axis of the rotary electric machine 1 and the input member 2 and the second axis A2 which is the rotation axis of the counter gear mechanism 3. do. The differential input gear 41 is connected to the differential case 42 so as to rotate integrally with the differential case 42.

The differential case 42 rotates around the third axis A3 integrally with the differential input gear 41. The differential case 42 is a hollow member, and a pinion shaft 43, a pair of pinion gears 44, a first side gear 45, and a second side gear 46 are housed therein. The first side gear 45 is connected to the first drive shaft DS1 driven and connected to the first wheel W1, and the second side gear 46 is connected to the second drive shaft DS2 driven and connected to the second wheel W2. There is.

In the differential gear device 4 configured as described above, the differential input gear 41 and the differential case 42 rotate around the third axis A3 as described above. That is, the differential gear device 4 is arranged on the third axis A3, which is different from the first axis A1 and the second axis A2.

Hereinafter, the detailed configuration of the parking gear 6 will be described.
The parking gear 6 is provided on the shaft portion 21 so as to rotate integrally with the shaft portion 21 of the input member 2. In this embodiment, the parking gear 6 is connected to the shaft portion 21 by spline engagement.

The parking gear 6 is arranged at a position overlapping the counter gear mechanism 3 in a radial R view with respect to the first axis A1. In the present embodiment, the parking gear 6 is arranged at a position overlapping the second gear 33 of the counter gear mechanism 3 in a radial R view with respect to the first axis A1. Here, "overlapping" in a specific directional view means that, with respect to the arrangement of two members, when a virtual straight line parallel to the line-of-sight direction is moved in each direction orthogonal to the virtual straight line, the two virtual straight lines are two. It means that there is at least a part of the area where both members intersect. Specifically, when the parking gear 6 overlaps with the second gear 33 in the radial direction R with respect to the first axis A1 as in the present embodiment, the parking gear 6 has one end to the other end of the axial direction L. The arrangement area up to (hereinafter referred to as "first arrangement area") and the arrangement area from one end to the other end of the axial direction L in the second gear 33 (hereinafter referred to as "second arrangement area") are At least partly coincides in the axial direction L. In the example shown in FIG. 1, the first arrangement area is narrower than the second arrangement area. In such a case, in the axial direction L, the entire area of the first arrangement area may be included in the second arrangement area, or only a part of the first arrangement area may be included in the second arrangement area. ..

Further, as shown in FIG. 2, the vehicle drive device 100 includes a parking lock mechanism 7. The parking lock mechanism 7 has a parking pole 71 and a parking cam 72.

The parking pole 71 functions as an "engagement member" that selectively engages with the parking gear 6. The parking pole 71 is located between the engaging position shown by the solid line in FIG. 2 for engaging with the parking gear 6 and the non-engaging position shown by the two-dot chain line in FIG. 2 for disengaging the parking gear 6. It is configured to be displaceable. When the parking pole 71 is in the engaging position, the engaging portion 71a of the parking pole 71 engages with the tooth groove of the parking gear 6, and the parking gear 6 is in a non-rotatable locked state. Further, when the parking pole 71 is in the non-engaged position, the engagement portion 71a of the parking pole 71 and the tooth groove of the parking gear 6 are disengaged, and the parking gear 6 is in a rotatable non-locked state. ..

The parking cam 72 is a member for displacing the parking pole 71 between the engaged position and the non-engaged position. The parking cam 72 is formed in a truncated cone shape, and moves until the portion having the maximum diameter thereof contacts the parking pole 71, thereby pressing the parking pole 71 so as to engage with the parking gear 6. In this way, the parking pole 71 is maintained in the engaged position. Further, the parking cam 72 moves so that the portion having the maximum diameter thereof is separated from the parking pole 71, so that the parking pole 71 is moved from the engaged position to the non-engaged position side by the urging force of the urging member (not shown). Move to. In this way, the parking pole 71 is maintained in the non-engaged position.

As shown in FIG. 2, in the present embodiment, the parking pole 71 of the parking lock mechanism 7 is arranged on one side of the virtual plane P including the first axis A1 and the third axis A3, and the second side is on the other side. The axis A2 is arranged. That is, the parking pole 71 of the parking lock mechanism 7 is arranged in the area of the internal space of the case 5 opposite to the side where the counter gear mechanism 3 is arranged with respect to the virtual plane P. In this example, the entire parking lock mechanism 7 is arranged in the area. The difference between the outer diameter of the differential gear device 4 and the outer diameter of the input member 2 in the region of the internal space of the case 5 opposite to the side where the counter gear mechanism 3 is arranged with respect to the virtual plane P. And there is a space created by the difference in the shaft position, and the counter gear mechanism 3 is not arranged, so that there is a large space margin. Therefore, in the present embodiment, the parking lock mechanism 7 is arranged in this area to reduce the size of the vehicle drive device 100.

[Other Embodiments]
(1) In the above embodiment, the parking gear 6 provided on the input member 2 is arranged at a position overlapping the second gear 33 of the counter gear mechanism 3 in the radial R view with respect to the first axis A1. The configuration was described as an example. However, the configuration is not limited to such a configuration, and the parking gear 6 may be arranged at a position overlapping the counter gear mechanism 3 in the radial R view. For example, the parking gear 6 may be arranged on the first side L1 in the axial direction with respect to the drive gear 22 of the input member 2.

(2) In the above embodiment, a configuration in which the parking gear 6 is connected to the shaft portion 21 of the input member 2 by spline engagement has been described as an example. However, the configuration is not limited to such a configuration, and the parking gear 6 may be provided on the input member 2 so as to rotate integrally with the input member 2. For example, the parking gear 6 may be connected to the shaft portion 21 of the input member 2 by a fastening member such as a bolt or a nut, or the parking gear 6 may be integrally formed with the shaft portion 21 of the input member 2. It may be a configured configuration.

(3) In the above embodiment, the configuration in which the second gear 33 of the counter gear mechanism 3 has a smaller diameter than the first gear 32 has been described as an example. However, the configuration is not limited to such a configuration, and the second gear 33 may have a larger diameter than the first gear 32 or the same diameter as the first gear 32.

(4) In the above embodiment, the parking pole 71 of the parking lock mechanism 7 is arranged on one side of the virtual plane P including the first axis A1 and the third axis A3, and the second axis A2 is on the other side. The arranged configuration has been described as an example. However, the configuration is not limited to such a configuration, and the parking pole 71 may be arranged on the side where the counter gear mechanism 3 is arranged with respect to the virtual plane P.

(5) The configurations disclosed in each of the above-described embodiments can be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction. 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 (100) described above will be described.

The vehicle drive device (100)
A rotary electric machine (1) that is a driving force source for a plurality of wheels (W1, W2), and
With the input member (2) driven and connected to the rotary electric machine (1),
A counter gear mechanism (3) having a first gear (32) and a second gear (33),
A driving force from a rotary electric machine (1) having a differential input gear (41) and transmitted to the differential input gear (41) via the input member (2) and the counter gear mechanism (3). With the differential gear device (4) that distributes the above to the plurality of wheels (W1, W2).
A drive gear (22) and a parking gear (6) provided on the input member (2) are provided.
The rotary electric machine (1) and the input member (2) are arranged on the first axis (A1).
The counter gear mechanism (3) is arranged on a second axis (A2) different from the first axis (A1).
The differential gear device (4) is arranged on a third axis (A3) different from the first axis (A1) and the second axis (A2).
The first gear (32) meshes with the drive gear (22) and
The second gear (33) meshes with the differential input gear (41) and
The parking gear (6) is arranged at a position overlapping the counter gear mechanism (3) in a radial (R) view with respect to the first axis (A1).

According to this configuration, the parking gear (6) is provided on the input member (2) having the drive gear (22) instead of the counter gear mechanism (3) having the first gear (32) and the second gear (33). Therefore, it becomes easy to keep the length of the counter gear mechanism (3) in the axial direction (L) short. Further, the parking gear (6) provided on the input member (2) is arranged at a position overlapping the counter gear mechanism (3) in the radial (R) view with respect to the first axis (A1). Therefore, the length of the vehicle drive device (100) in the axial direction (L) is not increased by installing the parking gear (6). Therefore, the vehicle drive device (100) can be miniaturized in the axial direction (L).

Here, it is preferable that the parking gear (6) is arranged at a position overlapping the second gear (33) in the radial direction (R) view.

Since the second gear (33) of the counter gear mechanism (3) meshes with the differential input gear (41) of the differential gear device (4), there is a gap between the input member (2) and the second gear (33). Excess space is likely to occur. According to this configuration, this surplus space can be used to arrange the parking gear (6). Therefore, it is possible to suppress the increase in size of the vehicle drive device (100) due to the arrangement of the parking gear (6).

Further, in a configuration in which the parking gear (6) is arranged at a position overlapping the second gear (33) in the radial direction (R), the second gear (33) is the first gear (32). ) Is smaller than the diameter.

According to this configuration, a space for arranging the parking gear (6) can be easily formed between the input member (2) and the second gear (33) of the counter gear mechanism (3). Therefore, the parking gear (6) can be arranged at a position overlapping the second gear (33) in the radial (R) view without widening the distance between the input member (2) and the counter gear mechanism (3). can. Therefore, it is possible to suppress the increase in size of the vehicle drive device (100) in the radial direction (R).

Further, a parking lock mechanism (7) having an engaging member (71) that selectively engages with the parking gear (6) is further provided.
The engaging member is arranged on one side of the virtual plane (P) including the first axis (A1) and the third axis (A3), and the second axis (A2) is arranged on the other side. It is preferable to have.

According to this configuration, the region of the vehicle drive device (100) opposite to the side on which the counter gear mechanism (3) is arranged with respect to the virtual plane (P), that is, the counter gear mechanism (3) The engaging member (71) of the parking lock mechanism (7) can be arranged in a region where there is a relatively large margin. Therefore, it is possible to further suppress the increase in size of the vehicle drive device (100).

The vehicle drive device according to the present disclosure is transmitted via a rotary electric machine that is a driving force source for a plurality of wheels, an input member that is driven and connected to the rotary electric machine, a counter gear mechanism, an input member, and a counter gear mechanism. It can be used for a vehicle drive device including a differential gear device that distributes the driving force from the rotary electric machine to a plurality of wheels and a parking gear.

100: Vehicle drive device 1: Rotating electric machine 2: Input member 22: Drive gear 3: Counter gear mechanism 32: 1st gear 33: 2nd gear 4: Differential gear device 41: Differential input gear 6: Parking gear 7 : Parking lock mechanism 71: Parking pole (engagement member)
A1: 1st axis A2: 2nd axis A3: 3rd axis P: Virtual plane L: Axial direction R: Radial direction

Claims (3)

A rotating electric machine that is a driving force source for multiple wheels,
With the input member driven and connected to the rotary electric machine,
A counter gear mechanism having a first gear and a second gear,
A differential gear device having a differential input gear and distributing the driving force from the rotary electric machine transmitted to the differential input gear via the input member and the counter gear mechanism to the plurality of wheels.
A drive gear and a parking gear provided on the input member are provided.
The rotary electric machine and the input member are arranged on the first axis, and the rotary electric machine and the input member are arranged on the first axis.
The counter gear mechanism is arranged on a second axis different from the first axis.
The differential gear device is arranged on a third axis different from the first axis and the second axis.
The first gear meshes with the drive gear and
The second gear meshes with the differential input gear and
The parking gear is arranged at a position overlapping the counter gear mechanism in a radial direction with respect to the first axis .
A parking lock mechanism having an engaging member that selectively engages with the parking gear is further provided.
The engaging member is arranged on one side of the virtual plane including the first axis and the third axis.
The second axis is arranged on the other side,
The engaging member is arranged below the virtual plane, and the second axis is arranged above.
A vehicle drive device in which the engaging member is arranged at a position that does not overlap with the differential gear device and overlaps with the counter gear mechanism in a vertical view. The vehicle drive device according to claim 1, wherein the parking gear is arranged at a position overlapping the second gear in the radial direction. The vehicle drive device according to claim 2, wherein the second gear has a smaller diameter than the first gear.

Images