JP2019111920A - Driving device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive device for a vehicle which is miniaturized in the axial direction. A vehicle drive device 100 includes a rotary electric machine 1, an 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, and a differential input gear. The differential gear device 4 having 41 and the 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, and the counter gear mechanism 3 is the first. The differential gear device 4 is arranged on the second axis A2 different from the axis A1, the differential gear device 4 is arranged on the third axis A3 different from the first axis A1 and the second axis A2, and the first gear 32 is an input member. The second gear 33 meshes with the differential input gear 41, and the parking gear 6 is positioned so as to overlap the counter gear mechanism 3 in a radial R view with respect to the first axis A1. Have been placed. [Selection diagram] Fig. 1

Description

  The present invention is driven by a rotating electrical machine serving as a driving force source for a plurality of wheels, an input member drivingly connected to the rotating electrical machine, a counter gear mechanism, and a rotating electrical machine transmitted through the input member and the counter gear mechanism. The present invention relates to a drive device for a vehicle including a differential gear that distributes power to a plurality of wheels and a parking gear.

  In Patent Document 1 below, a rotating electrical machine (vehicle drive motor 10) serving as a driving force source for a plurality of wheels, and an input member (input shaft 33) drivingly connected to the rotating electrical machine (vehicle drive motor 10) , And a differential gear device (differential mechanism) that distributes the driving force from the rotating electric machine (vehicle drive motor 10) transmitted through the counter gear mechanism, the input member (input shaft 33) and the counter gear mechanism to a plurality of wheels There is disclosed a vehicle drive system (power transmission system 1) provided with 3) and a parking gear (a parking operation gear 35). In addition, the member name and code | symbol which are shown in parenthesis in description of background art are things of the document to which it refers.

  In the vehicle drive device (power transmission device 1) of Patent Document 1, the large diameter gear (first large gear 34) and the small diameter gear (second small gear 36) provided on the counter shaft (counter shaft 37) of the counter gear mechanism. And a parking gear (a parking operation gear 35). That is, three gears of 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 aligned along the axial direction of the counter gear mechanism. There is. Therefore, the axial length (length in the axial direction) of the countershaft (counter shaft 37) tends to be large, which may lead to an increase in the size of the vehicle drive device (power transmission device 1) in the axial direction. And the enlargement of the axial direction of the drive device for vehicles has the possibility of worsening the installation nature to vehicles.

JP-A-8-230489 (FIG. 1)

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

The characteristic configuration of the vehicle drive device in view of the above is
A rotating electrical machine that is a driving force source for multiple wheels,
An input member drivingly connected to the rotating electrical 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 rotating electrical 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;
The rotating electrical machine and the input member are disposed on a first axis,
The counter gear mechanism is disposed on a second shaft different from the first shaft,
The differential gear device is disposed on a third axis different from the first axis and the second axis,
The first gear meshes with the drive gear,
The second gear meshes with the differential input gear,
The parking gear is disposed at a position overlapping with the counter gear mechanism in a radial direction with reference to the first shaft.

  According to this feature configuration, since the parking gear is provided not on the counter gear mechanism having the first gear and the second gear but on the input member having the drive gear, the axial length of the counter gear mechanism can be shortened. Becomes easy. Further, since the parking gear provided on the input member is disposed at a position overlapping the counter gear mechanism in a radial direction with reference to the first axis, the axial direction of the vehicle drive device by the installation of the parking gear There is no increase in length. Therefore, the vehicle drive device can be miniaturized in the axial direction.

A figure showing a drive for vehicles concerning an embodiment Sectional drawing in the surface along the direction orthogonal to the axial direction of the vehicle drive device which concerns on embodiment

  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 car using an internal combustion engine and a rotating electric machine as a driving force source for a plurality of wheels, or an electric car using a rotating electric machine 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 the rotary electric machine 1 as a driving force source of the first wheel W1 and the second wheel W2. In the case of a two-wheel drive four-wheeled vehicle, this makes it possible to realize an electric vehicle. Further, in the case of a four-wheel drive four-wheeled vehicle, a hybrid vehicle can be realized by driving the other two wheels by the driving force of the internal combustion engine. As a matter of course, in the case of a four-wheel drive four-wheeled vehicle, a four-wheel drive electric vehicle can also be realized by applying the vehicle drive device 100 of this embodiment to the other two wheels.

  In the present application, “rotary electric machine” is used as a concept including any of a motor (electric motor), a generator (generator), and a motor generator that functions as both a motor and a generator as required. Further, in the present application, “drive 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 to rotate integrally or It includes a state in which the two rotating elements are communicablely connected with one another via one or more transmission members. Such transmission members include various members that transmit rotation at the same speed or at different speeds, such as a shaft, a gear mechanism, a belt, a chain, and the like. Note that, as the transmission member, an engagement device that selectively transmits the rotation and the driving force, for example, a friction engagement device, a meshing engagement device, or the like may be included.

  As shown in FIG. 1, the vehicle drive device 100 includes a rotating electric machine 1 serving as a driving force source for the first wheel W1 and the second wheel W2, an input member 2 drivingly connected to the rotating electric machine 1, and a counter gear mechanism. And a differential gear device 4 for distributing the driving force from the rotating electric machine 1 transmitted through 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 rotating electrical machine 1, the input member 2, the counter gear mechanism 3, and the differential gear device 4 are accommodated in a case 5.

The rotary electric machine 1 and the input member 2 are disposed on a first axis A1 as their rotational axis, and the counter gear mechanism 3 is disposed on a second axis A2 as its rotational axis, and a differential gear unit 4 is disposed on a third axis A3 as its rotational axis. The first axis A1, the second axis A2, and the third axis A3 are virtual axes different from each other, and are arranged in parallel to each other.
In the following description, the direction parallel to the above-described axes A1 to A3 is taken as the “axial direction L” of the vehicle drive device 100. And in axial direction L, let the side which goes to input member 2 from rotation electrical machinery 1 be "axial direction 1st side L1", and let the side which goes to rotation electrical machinery 1 from input member 2 be "axial direction second side L2." Moreover, let the direction orthogonal to each of said 1st axis A1, 2nd axis A2, and 3rd axis A3 be "radial direction R" on the basis of each axis. In the case where it is not necessary to distinguish which axis is the reference, or when it is clear that the axis is the reference, it may be simply described as “radial direction R”. FIG. 1 shows a radial direction R based on the first axis A1. Here, the directions of the respective members represent the directions in the state where they are assembled to the vehicle drive device 100.

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

  The rotary electric machine 1 is a drive power source of 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 rotatable with respect to the stator 11. In the present embodiment, since the rotary electric machine 1 is a rotary field type rotary electric machine, the coil 112 is wound around the stator core 111, 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 disposed on the inner side of 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, "cylindrical" means that the general shape of the whole as a whole is a cylinder even if it has some odd-shaped parts (hereinafter, "other" is used with a "shape" with respect to the shape etc. The same applies to the expression of

  The rotor shaft 13 rotates around the first axis A1 integrally with the rotor 12. The rotor shaft 13 extends along the axial direction L so as to protrude from both end surfaces of the rotor core 121 in the axial direction L. An end of the first axial side L 1 of the rotor shaft 13 is rotatably supported by the third wall 54 of the case 5 via the first rotor bearing 91. An end of the second axial side L 2 of the rotor shaft 13 is rotatably supported by the second wall 53 of the case 5 via a second rotor bearing 92. The 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 drivingly connected to the rotary electric machine 1. Then, the input member 2 rotates around the first axis 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 disposed on the first axis A1. The input member 2 also has a shaft 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 L 2 of the shaft portion 21 is connected to the end of the axial first side L 1 of the rotor shaft 13. In the present embodiment, the end of the second axial side L2 of the axial portion 21 is the end of the first axial side L1 of the rotor shaft 13 so that the axial portion 21 is positioned inside the radial direction R of the rotor shaft 13 The ends are connected by spline engagement. The end of the axial first side L 1 of the shaft 21 is rotatably supported by the first wall 52 of the case 5 via the first input bearing 93. Further, the portion on the first side L 1 in the axial direction of the shaft portion 21 relative to the connection 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 driving gear 22 is a gear for transmitting the driving force from the rotating electrical machine 1 to the counter gear mechanism 3. The drive gear 22 is provided on the shaft portion 21. The drive gear 22 is disposed between the first input bearing 93 and the second input bearing 94. In the present embodiment, the drive gear 22 is disposed adjacent to the second input side 93 with respect to the first input bearing 93. Further, in the present embodiment, the drive gear 22 is integrally formed with the shaft portion 21. In addition to the drive gear 22, a parking gear 6 is provided on the shaft portion 21 of the input member 2. The detailed configuration of the parking gear 6 will be described later.

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

  The countershaft 31 extends along the axial direction L. The end of the first axial side L 1 of the counter shaft 31 is rotatably supported by the first wall 52 of the case 5 via the first counter bearing 95. The end of the second axial side L 2 of the counter shaft 31 is rotatably supported by the third wall 54 of the case 5 via a 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 coupled to the counter shaft 31 by spline engagement so as to rotate integrally with the counter shaft 31. The first gear 32 is disposed between the first counter bearing 95 and the second counter bearing 96 and on the axially first side L 1 relative to the second gear 33. In the present embodiment, the first gear 32 is disposed adjacent to the second counter side 95 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 a differential input gear 41 of the differential gear device 4 described later. In the present embodiment, the second gear 33 is formed smaller in 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 countershaft 31. The second gear 33 is arranged to be coaxial with the first gear 32. Furthermore, the second gear 33 is disposed between the first counter bearing 95 and the second counter bearing 96, and on the second axial side L2 in the axial direction with respect to the first gear 32. In the present embodiment, the second gear 33 is disposed adjacent to the second counter bearing 96 on the first axial side L1.

  The differential gear device 4 transmits the driving force from the rotating electrical machine 1 transmitted through the input member 2 and the counter gear mechanism 3 to the first wheel via the first drive shaft DS1 and the second drive shaft DS2, respectively. It distributes to W1 and the 2nd wheel W2. The differential gear device 4 has 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 about a third axis A3 different from the first axis A1 which is the rotational axis of the rotary electric machine 1 and the input member 2 and the second axis A2 which is the rotational axis of the counter gear mechanism 3 Do. The differential input gear 41 is coupled 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 the pinion shaft 43, the pair of pinion gears 44, and the first side gear 45 and the second side gear 46 are accommodated therein. The first side gear 45 is connected to a first drive shaft DS1 drivingly connected to the first wheel W1, and the second side gear 46 is connected to a second drive shaft DS2 drivingly connected to the second wheel W2. There is.

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

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

  The parking gear 6 is disposed at a position overlapping the counter gear mechanism 3 in the radial direction R with reference to the first axis A1. In the present embodiment, the parking gear 6 is disposed at a position overlapping the second gear 33 of the counter gear mechanism 3 in the radial direction R with reference to the first axis A1. Here, “overlap” in the specific direction view means that, with regard to the arrangement of the two members, when the virtual straight line parallel to the viewing direction is moved in each direction orthogonal to the virtual straight line, the virtual straight line is two. It refers to the presence of at least a part of the area intersecting with both of the members. Specifically, as in the present embodiment, when the parking gear 6 overlaps the second gear 33 in the radial direction R with reference to the first axis A1, one end to the other end of the parking gear 6 in the axial direction L The arrangement region up to (hereinafter referred to as “first arrangement region”) and the arrangement region from one end to the other end of the second gear 33 in the axial direction L (hereinafter referred to as “second arrangement region”) It agrees at least partially 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, the entire first arrangement area may be included in the second arrangement area in the axial direction L, 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 the parking gear 6. The parking pole 71 is shown in FIG. 2 as a solid line between an engaging position for engaging with the parking gear 6 and a non-engaging position for releasing the engagement with the parking gear 6 shown in FIG. It is configured to be displaceable. When the parking pole 71 is in the engaged position, the engaging portion 71a of the parking pole 71 engages with the toothed 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-engaging position, the engagement between the engaging portion 71a of the parking pole 71 and the toothed groove of the parking gear 6 is released, and the parking gear 6 becomes rotatable. .

  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 of the largest diameter contacts the parking pole 71, thereby pressing the parking pole 71 to engage with the parking gear 6. Thus, the parking pole 71 is maintained at the engaged position. In addition, the parking cam 72 moves so that the portion of the largest diameter is separated from the parking pole 71, so that the parking pole 71 moves from the engaged position to the non-engaged position side by the biasing force of the biasing member (not shown). Move to Thus, the parking pole 71 is maintained in the disengaged position.

  As shown in FIG. 2, in the present embodiment, the parking pole 71 of the parking lock mechanism 7 is disposed on one side across the virtual plane P including the first axis A1 and the third axis A3, and the second side on the other side. An axis A2 is arranged. That is, the parking pole 71 of the parking lock mechanism 7 is disposed in the area on the opposite side to the side where the counter gear mechanism 3 is disposed with respect to the virtual plane P in the internal space of the case 5. In this example, the entire parking lock mechanism 7 is disposed 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 on the side opposite to the side where the counter gear mechanism 3 is disposed with respect to the virtual plane P in the internal space of the case 5 There is a space generated by the difference of the shaft position and the shaft position, and there is a large space margin because the counter gear mechanism 3 is not disposed. So, in this embodiment, size reduction of the drive device 100 for vehicles is achieved by arrange | positioning the parking lock mechanism 7 in this area | region.

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

(2) In the above embodiment, the 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 present invention 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 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 21 of the input member 2 The configuration may be different.

(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 present invention is not limited to such a configuration, and the second gear 33 may have a diameter larger than that of the first gear 32 or may have the same diameter as that of the first gear 32.

(4) In the above embodiment, the parking pole 71 of the parking lock mechanism 7 is disposed on one side across 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 arrangement configuration has been described as an example. However, the configuration is not limited to such a configuration, and the parking pole 71 may be disposed on the side where the counter gear mechanism 3 is disposed with respect to the virtual plane P.

(5) Note that the configurations disclosed in the above-described embodiments can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises. As for the other configurations, the embodiments disclosed herein are merely illustrative in all respects. Therefore, various modifications can be made as appropriate without departing from the spirit of the present disclosure.

[Summary of the above embodiment]
Hereinafter, an outline of the vehicle drive device (100) described above will be described.

The vehicle drive unit (100) is
A rotating electrical machine (1) serving as a driving force source for a plurality of wheels (W1, W2);
An input member (2) drivingly connected to the rotating electric machine (1);
A counter gear mechanism (3) having a first gear (32) and a second gear (33);
Driving force from the rotating electrical machine (1) having a differential input gear (41) and transmitted to the differential input gear (41) through the input member (2) and the counter gear mechanism (3) A differential gear (4) for distributing the plurality of wheels (W1, W2);
A drive gear (22) and a parking gear (6) provided on the input member (2);
The rotating electrical machine (1) and the input member (2) are disposed on a first axis (A1),
The counter gear mechanism (3) is disposed on a second shaft (A2) different from the first shaft (A1),
The differential gear (4) is disposed 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),
The second gear (33) meshes with the differential input gear (41),
The parking gear (6) is disposed at a position overlapping the counter gear mechanism (3) in a radial direction (R) with respect to the first shaft (A1).

  According to this configuration, the parking gear (6) is provided to the input member (2) having the drive gear (22), not the counter gear mechanism (3) having the first gear (32) and the second gear (33). Thus, it is easy to reduce the length of the counter gear mechanism (3) in the axial direction (L). In addition, the parking gear (6) provided on the input member (2) is disposed at a position overlapping the counter gear mechanism (3) in the radial direction (R) with respect to the first shaft (A1) Therefore, the axial length (L) of the vehicle drive device (100) does not increase due to the installation of the parking gear (6). Therefore, the vehicle drive device (100) can be miniaturized in the axial direction (L).

  Here, preferably, the parking gear (6) is disposed at a position overlapping the second gear (33) in the radial direction (R).

  Since the second gear (33) of the counter gear mechanism (3) meshes with the differential input gear (41) of the differential gear (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, the enlargement of the vehicle drive device (100) due to the disposition of the parking gear (6) can be suppressed.

  Further, in the configuration in which the parking gear (6) is disposed at a position overlapping the second gear (33) in the radial direction (R), the second gear (33) corresponds to the first gear (32). It is preferable that the diameter be smaller than that).

  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, without increasing the distance between the input member (2) and the counter gear mechanism (3), the parking gear (6) may be disposed at a position overlapping the second gear (33) in the radial direction (R). it can. Therefore, the enlargement of the vehicle drive device (100) in the radial direction (R) can be suppressed.

The parking lock mechanism (7) further includes an engagement member (71) selectively engaged with the parking gear (6).
The engaging member is disposed on one side across an imaginary plane (P) including the first axis (A1) and the third axis (A3), and the second axis (A2) is disposed on the other side. Is preferable.

  According to this configuration, in the vehicle drive device (100), an area on the opposite side to the side on which the counter gear mechanism (3) is disposed 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 disposed in an area where there is a relatively large margin. Therefore, the increase in size of the vehicle drive device (100) can be further suppressed.

  The vehicle drive device according to the present disclosure is transmitted via a rotating electric machine serving as a driving force source for a plurality of wheels, an input member drivingly connected to the rotating machine, a counter gear mechanism, an input member and a counter gear mechanism. The present invention can be used for a vehicle drive device provided with a differential gear device that distributes a driving force from a rotating electrical 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: First gear 33: Second gear 4: Differential gear device 41: Differential input gear 6: Parking gear 7 : Parking lock mechanism 71: Parking pole (engagement member)
A1: first axis A2: second axis A3: third axis P: imaginary plane L: axial direction R: radial direction

Claims (4)

A rotating electrical machine that is a driving force source for multiple wheels,
An input member drivingly connected to the rotating electrical 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 rotating electrical 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;
The rotating electrical machine and the input member are disposed on a first axis,
The counter gear mechanism is disposed on a second shaft different from the first shaft,
The differential gear device is disposed on a third axis different from the first axis and the second axis,
The first gear meshes with the drive gear,
The second gear meshes with the differential input gear,
The parking gear is disposed at a position overlapping with the counter gear mechanism in a radial direction with reference to the first shaft.   The vehicle drive device according to claim 1, wherein the parking gear is disposed at a position overlapping the second gear in the radial direction.   The vehicle drive device according to claim 2, wherein the second gear is smaller in diameter than the first gear. A parking lock mechanism having an engagement member selectively engaged with the parking gear;
The engaging member is disposed on one side of an imaginary plane including the first axis and the third axis, and the second axis is disposed on the other side. The vehicle drive device according to any one of the above.

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