JP2023047794A - Vehicular drive device - Google Patents

Abstract

To achieve simplification of a structure and equalization of left and right revolving characteristics in a vehicular drive device including a single rotary electric machine as a driving force source for traveling.SOLUTION: A vehicular drive device (1) includes: a rotary electric machine (10); a first output member (50) which is connected to a first wheel (W1) in a manner that enables transmission of a driving force; a second output member (60) which is connected to a second wheel (W2) in a manner that enables transmission of a driving force; and a planetary gear mechanism (20). A first rotary element (21) of the planetary gear mechanism (20) is connected to the rotary electric machine (10) in a manner that enables transmission of a driving force; a third rotary element (23) is connected to a first relay gear (30) in a manner that enables transmission of a driving force; and a second rotary element (22) is connected to a second relay gear (40) in a manner that enables transmission of a driving force. The first relay gear (30) engages with a first output gear (55) which rotates integrally with the first output member (50). The vehicular drive device (1) further includes a third relay gear (45) which engages with the second relay gear (40) and a second output gear (65) which integrally rotates with the second output member (60).SELECTED DRAWING: Figure 1

Description

The present invention relates to a vehicle drive system.

Due to the recent heightened awareness of the environment, electric vehicles that only have a rotating electrical machine as a driving force source for running are becoming popular. In many cases, only one rotating electrical machine is provided so as to commonly drive the left and right wheels, and in this case, a differential gear device is provided to absorb the rotation difference between the two wheels. A differential gear device generally includes a pair of bevel gears that mesh with each other. ).

The vehicle drive device of Patent Document 1 includes a single rotary electric machine (motor 4), a first output member (first drive shaft 8) drivingly connected to a first wheel (left front wheel LF), a second wheel It has a second output member (second drive shaft 9) drivingly connected to (right front wheel RF), and a planetary gear mechanism (planetary gear mechanism 5) for absorbing the rotational difference between the two wheels. The planetary gear device includes a first rotating element (sun gear 10), a second rotating element (ring gear 13), and a third rotating element (planetary carrier 12), and the first rotating element rotates integrally with the rotor of the rotating electric machine. The third rotating element is drivingly connected to the first output member via the first intermediate gear (helical gear 6) and the first output gear (helical gear 7), and the second rotating element is connected to the second output member. connected to rotate together.

In the vehicle drive device of Patent Document 1, the second output member is arranged coaxially with the planetary gear device, while the first output member is arranged on a separate shaft from the planetary gear device through a gear pair. , the first output member and the second output member are out of alignment. As a result, the axis centers of the left and right wheels are also misaligned, and there is a problem that the turning characteristics may differ between left turning and right turning.

JP 2018-167769 A

Therefore, in a vehicle drive device having a single rotating electric machine as a driving force source for running, it is desired to equalize left and right turning characteristics while achieving simplification of the structure.

A vehicle driving device according to the present disclosure includes:
a rotating electric machine having a rotor;
a first output member drivingly connected to the first wheel;
a second output member drivingly connected to the second wheel;
A first rotating element, a second rotating element, and a third rotating element are provided, and the rotation speeds of the first rotating element, the second rotating element, and the third rotating element are arranged in the order described. and a planetary gear mechanism,
the first rotating element is coupled to rotate integrally with the rotor;
the third rotating element is coupled to rotate integrally with the first intermediate gear;
the second rotating element is coupled to rotate integrally with the second intermediate gear;
the first relay gear meshes with a first output gear that rotates integrally with the first output member;
further comprising a third intermediate gear meshing with the second intermediate gear and the second output gear that rotates integrally with the second output member;
the rotating electric machine, the planetary gear mechanism, the first relay gear, and the second relay gear are arranged coaxially;
The first output member and the second output member are arranged on an axis different from that of the rotating electric machine, and the first output member and the second output member are arranged coaxially.

According to this configuration, by using a planetary gear mechanism in which the three rotating elements are drivingly connected to the rotor, the first output member, and the second output member of the rotating electrical machine, respectively, it is possible to absorb the rotation difference between the two wheels. , the structure can be simplified. In such a configuration, both the first output member and the second output member are drivingly connected to corresponding rotating elements of the planetary gear mechanism via one or more gear pairs, respectively. The degree of freedom of arrangement of the second output member is high. The first output member and the second output member are coaxially arranged by taking advantage of the high degree of freedom of arrangement. As a result, the left and right wheels are arranged coaxially, making it easier to equalize the left and right turning characteristics.

Further features and advantages of the technology according to the present disclosure will become clearer from the following description of exemplary and non-limiting embodiments described with reference to the drawings.

Skeleton diagram of a vehicle drive system Cross-sectional view of a vehicle drive system Layout diagram of the vehicle driving device viewed from the axial direction Velocity diagram of planetary gear mechanism

An embodiment of a vehicle drive system will be described with reference to the drawings. As shown in FIGS. 1 and 2, the vehicle drive system 1 includes a rotating electric machine 10, a first output member 50 drivingly connected to a first wheel W1, and a second output member drivingly connected to a second wheel W2. A member 60 and a planetary gear mechanism 20 are provided. The vehicle drive device 1 also includes a first intermediate gear 30 , a second intermediate gear 40 , a third intermediate gear 45 , a first output gear 55 and a second output gear 65 . These are housed in a case (driving device case) 9 . Part of the first output member 50 and the second output member 60 are exposed outside the case 9 .

In this embodiment, the term "rotary electric machine" is used as a concept including motors (electric motors), generators (generators), and motor-generators that function as both motors and generators as necessary.

In addition, the term "driving connection" means a state in which two rotating elements are connected so as to be able to transmit driving force. This concept includes a state in which two rotating elements are connected so as to rotate together, and a state in which two rotating elements are connected so as to be able to transmit driving force via one or more transmission members. . Such transmission members include various members (shafts, gear mechanisms, belts, chains, etc.) that transmit rotation at the same speed or at different speeds, and engagement devices that selectively transmit rotation and driving force. (friction engagement device, mesh engagement device, etc.) may be included.

The rotating electric machine 10 is arranged on the first axis X1. The planetary gear mechanism 20, the first intermediate gear 30, and the second intermediate gear 40 are also arranged on the first axis X1. That is, the planetary gear mechanism 20 , the first intermediate gear 30 , and the second intermediate gear 40 are arranged coaxially with the rotary electric machine 10 . The first output member 50, the first output gear 55, the second output member 60, and the second output gear 65 are arranged on the second axis X2 different from the first axis X1. The third intermediate gear 45 is arranged on a third axis X3 different from the first axis X1 and the second axis X2.

These first axis X1, second axis X2, and third axis X3 are virtual axes different from each other, and are arranged parallel to each other. In this embodiment, the direction parallel to the first axis X1, the second axis X2, and the third axis X3 is defined as "axial direction L". One side in the axial direction L (in this example, the side on which the planetary gear mechanism 20 is arranged with respect to the rotary electric machine 10) is defined as the "first axial side L1", and the opposite side of the axial direction L is The other side (the side on which the rotating electric machine 10 is arranged with respect to the planetary gear mechanism 20) is referred to as "second axial side L2".

The rotating electrical machine 10 includes a stator 11 fixed to a case 9 that is a non-rotating member, and a rotor 12 rotatably supported radially inward of the stator 11 . A rotor shaft 15 extending along the axial direction L is connected to the rotor 12 so as to rotate integrally therewith. The rotor shaft 15 is configured as a hollow shaft. The rotor shaft 15 extends from the rotor 12 toward the axial second side L2. In this example, a sun gear as the first rotating element 21 of the planetary gear mechanism 20 is formed at the end of the rotor shaft 15 on the second side L2 in the axial direction.

The rotor 12 and the rotor shaft 15 are rotatably supported with respect to the case 9 at two points in the axial direction L. As shown in FIG. As shown in FIG. 2, the rotor 12 and the rotor shaft 15 are rotatably supported by a first rotor bearing 81 on the axial first side L1 with respect to the rotor 12, and are axially supported with respect to the rotor 12. It is rotatably supported by a second rotor bearing 82 on the second side L2.

A parking gear 17 is also provided on the axial first side L<b>1 with respect to the rotor 12 . The parking gear 17 is arranged on the axial first side L1 of the first rotor bearing 81 and on the axial second side L2 of the planetary gear mechanism 20 . A rotation sensor 18 for detecting the rotational position of the rotor 12 is also provided on the second side L2 in the axial direction with respect to the rotor 12 . In this embodiment, the second rotor bearing 82 and the rotation sensor 18 are constructed integrally.

The planetary gear mechanism 20 functions to distribute the torque of the rotating electric machine 10 to the two wheels W1, W2 while absorbing the rotation difference between the two wheels W1, W2. The planetary gear mechanism 20 has a first rotating element 21 , a second rotating element 22 and a third rotating element 23 . In this embodiment, the first rotating element 21 is a sun gear, the second rotating element 22 is a carrier, and the third rotating element 23 is a ring gear. Further, the planetary gear mechanism 20 of the present embodiment is configured as a single pinion type, and the rotation of the first rotating element 21 (sun gear), the second rotating element 22 (carrier), and the third rotating element 23 (ring gear) is The order of speed is the order of description.

It should be noted that "the order of rotational speed" means the order of rotational speed in the rotating state of each rotating element. The rotation speed of each rotating element changes depending on the rotation state of the planetary gear mechanism, but the order of the rotation speed of each rotating element is fixed because it is determined by the structure of the differential gear mechanism. Note that "the order of the rotation speed of each rotating element" is equal to the order of arrangement in the velocity diagram (nominal chart, see FIG. 4) of each rotating element.

The first rotating element 21 (sun gear) is connected to rotate integrally with the rotor 12 . In this embodiment, the first rotating element 21 is formed at the end of the rotor shaft 15 on the second side L2 in the axial direction. It is connected to the rotor 12 so as to rotate integrally.

The third rotating element 23 (ring gear) is connected to rotate integrally with the first intermediate gear 30 . In this embodiment, the third rotating element 23 is connected to the first intermediate gear 30 via the connecting member 25 so as to rotate integrally therewith. The connecting member 25 has a cylindrical portion 25A, a plate-like portion 25B, and a shaft portion 25C. A third rotating element 23 is formed on the inner peripheral surface of the tubular portion 25A. The plate-like portion 25B extends radially inward along the planetary gear mechanism 20 from the end portion of the cylindrical portion 25A on the axial first side L1. The shaft portion 25C extends from the central portion of the plate-like portion 25B toward the first side L1 in the axial direction. The shaft portion 25C is rotatably supported with respect to the case 9 by a pair of first relay bearings 83 . A first relay gear 30 is formed between a pair of first relay bearings 83 in the axial direction L on the outer peripheral surface of the shaft portion 25C.

Thus, the first relay gear 30 is arranged coaxially with the planetary gear mechanism 20 on the first side L1 in the axial direction with respect to the planetary gear mechanism 20 . The first intermediate gear 30 meshes with the first output gear 55 . In this embodiment, the first output gear 55 is formed to have a larger diameter than the first intermediate gear 30 . The first output gear 55 is rotatably supported with respect to the case 9 by a pair of first output bearings 85 . The first output gear 55 is connected to rotate integrally with the first output member 50 drivingly connected to the first wheel W1.

The second rotating element 22 (carrier) is connected to rotate integrally with the second intermediate gear 40 . In this embodiment, the second rotating element 22 is connected to the second relay gear 40 via the connecting shaft 35 so as to rotate integrally therewith. The connecting shaft 35 extends from the radial center portion of the second rotating element 22 toward the axial second side L2. The connecting shaft 35 penetrates the hollow rotor shaft 15 and extends from the rotary electric machine 10 to the second side L2 in the axial direction. A second relay gear 40 is connected to the end portion of the connecting shaft 35 on the second side L2 in the axial direction so as to rotate integrally therewith. The end portion of the connecting shaft 35 on the axial second side L2 is rotatably supported with respect to the case 9 by a pair of second intermediate bearings 84 arranged on both sides of the second intermediate gear 40 .

Thus, the second intermediate gear 40 is arranged on the second axial side L2 opposite to the first intermediate gear 30 with respect to the planetary gear mechanism 20 . The second intermediate gear 40 meshes with the third intermediate gear 45 . The third relay gear 45 is also arranged on the second side L2 in the axial direction with respect to the planetary gear mechanism 20 . Also, the third relay gear 45 meshes with the second output gear 65 . In this embodiment, the third intermediate gear 45 is formed with a larger diameter than the second intermediate gear 40 , and the second output gear 65 is formed with a larger diameter than the third intermediate gear 45 . The second output gear 65 is rotatably supported with respect to the case 9 by a pair of second output bearings 86 . The second output gear 65 is connected to rotate integrally with the second output member 60 drivingly connected to the second wheel W2.

In this embodiment, a second output gear 65 that rotates integrally with the second output member 60 is provided, and a third relay gear 45 that meshes with both the second relay gear 40 and the second output gear 65 is additionally provided. Thus, the degree of freedom of arrangement of the second output member 60 can be increased. As a result, for example, the second output member 60 can be arranged coaxially with the first output member 50. In this embodiment, the first output member 50 and the second output member 60 are actually arranged coaxially. ing.

In this way, the vehicle drive system 1
a rotating electric machine 10 having a rotor 12;
a first output member 50 drivingly connected to the first wheel W1;
a second output member 60 drivingly connected to the second wheel W2;
A first rotating element 21, a second rotating element 22, and a third rotating element 23 are provided. a planetary gear mechanism 20 configured as
The first rotating element 21 is coupled to rotate integrally with the rotor 12,
The third rotating element 23 is connected to rotate integrally with the first intermediate gear 30,
The second rotating element 22 is connected to rotate integrally with the second intermediate gear 40,
The first relay gear 30 meshes with the first output gear 55 that rotates integrally with the first output member 50,
further comprising a third relay gear 45 that meshes with the second relay gear 40 and a second output gear 65 that rotates integrally with the second output member 60,
The rotary electric machine 10, the planetary gear mechanism 20, the first intermediate gear 30, and the second intermediate gear 40 are coaxially arranged,
The first output member 50 and the second output member 60 are arranged on an axis different from that of the rotary electric machine 10, and the first output member 50 and the second output member 60 are arranged coaxially.

According to this configuration, using the planetary gear mechanism 20 in which the three rotating elements are drivingly connected to the rotor 12, the first output member 50, and the second output member 60 of the rotary electric machine 10, the two wheels W1, W2 are rotated. The structure can be simplified while being able to absorb the difference in rotation. In such a configuration, both the first output member 50 and the second output member 60 are drivingly connected to corresponding rotating elements of the planetary gear mechanism 20 via one or more gear pairs, respectively. The degree of freedom in arrangement of the output member 50 and the second output member 60 is increased. The first output member 50 and the second output member 60 are arranged coaxially by taking advantage of the high degree of freedom of arrangement. As a result, the left and right wheels W1 and W2 are also arranged coaxially, making it easy to equalize the left and right turning characteristics.

Here, the rotation of the rotary electric machine 10 (rotor 12) is decelerated by the planetary gear mechanism 20, and the first intermediate gear 30 and the second rotary element 22 that rotate integrally with the third rotary element 23 are integrally rotated. is transmitted to the second intermediate gear 40 that rotates to In this embodiment, the left and right two systems of rotation are further decelerated through one or more gear pairs, respectively, and transmitted to the first output member 50 and the second output member 60, and thus to the two wheels W1 and W2. . Therefore, in each of the left and right two systems, the first speed reduction by the planetary gear mechanism 20 and the second speed reduction by one or more pairs of gears (one pair on the side of the first wheel W1 and two pairs on the side of the second wheel W2). 2, a large total reduction ratio can be ensured. Therefore, it is possible to secure a large driving force without changing the size of the rotating electrical machine 10, or it is possible to reduce the size of the rotating electrical machine 10 while securing an equivalent driving force. Of course, they can also be balanced according to the desired properties.

The speed reduction ratio from the first relay gear 30 to the first output member 50 (here, "σ1") and the speed reduction ratio from the second relay gear 40 to the second output member 60 (here, "σ2") ) is the ratio (σ1/σ2) between the reduction ratio from the rotor 12 to the second relay gear 40 (here, “ρ2”) and the reduction ratio from the rotor 12 to the first relay gear 30 ( Here, it is set to be equal to the ratio (.rho.2/.rho.1) to ".rho.1"). As a result, the total reduction ratio (ρ1·σ1) from the rotor 12 to the first output member 50 and the reduction ratio (ρ2·σ2) from the rotor 12 to the second output member 60 are the same.

in this way,
It is preferable that the reduction ratio from the rotor 12 to the first output member 50 and the reduction ratio from the rotor 12 to the second output member 60 are the same.

According to this configuration, the rotational speeds and driving forces of the two wheels W1 and W2 can be equalized. Therefore, the straight running stability of the vehicle can be improved.

again,
The direction along the rotation axis of the rotor 12 is defined as an axial direction L, the side of the rotor 12 on which the planetary gear mechanism 20 is arranged in the axial direction L is defined as an axial first side L1, and the opposite side is defined as an axial second side. As side L2,
The first relay gear 30 is arranged on the first side L1 in the axial direction with respect to the planetary gear mechanism 20,
It is preferable that the second relay gear 40 and the third relay gear 45 are arranged on the axial second side L2 with respect to the rotor 12 .

According to this configuration, by arranging the gear pair having the greater number on the opposite side of the rotating electrical machine 10 from the planetary gear mechanism 20, the weight balance on both sides of the rotating electrical machine 10 in the axial direction L is evenly distributed. can get closer.

The left side of FIG. 3 is a layout diagram showing the arrangement configuration of each shaft viewed from the axial direction first side L1, and the right side is a layout diagram showing the arrangement configuration of each shaft viewed from the axial direction second side L2. be. As shown in this figure, the second axis X2 is arranged below the first axis X1. In this embodiment, the second axis X2 is arranged vertically below the first axis X1. As described above, in the present embodiment, the first output member 50 and the second output member 60 have a high degree of freedom in arrangement. is fixed, the rotating electric machine 10 and the planetary gear mechanism 20 can be arranged with a high degree of freedom. When viewed centering on the first output member 50 and the second output member 60 arranged on the second axis X2, the rotary electric machine 10 and the planetary gear mechanism 20 arranged on the first axis X1 are vertically upward. are placed. Thereby, the minimum ground clearance can be easily ensured.

As shown in FIG. 3 , the first output gear 55 is arranged so as to overlap the planetary gear mechanism 20 when viewed along the axial direction L (in the axial direction). In this embodiment, the rotary electric machine 10 and the planetary gear mechanism 20 are formed to have approximately the same size in the radial direction. Therefore, the first output gear 55 is arranged so as to overlap with the rotary electric machine 10 as viewed in the axial direction. The first output gear 55 is arranged so that most of the upper side including the center (the position of the second axis X2) overlaps with the planetary gear mechanism 20 and the rotary electric machine 10 when viewed in the axial direction, and a part of the lower side is The planetary gear mechanism 20 and the rotary electric machine 10 do not overlap.

Further, the third intermediate gear 45 and the second output gear 65 are arranged so as to overlap with the rotary electric machine 10 when viewed in the axial direction. The third relay gear 45 is arranged so as to entirely overlap with the rotary electric machine 10 when viewed in the axial direction. The second output gear 65 is arranged so that most of the upper side including the center (the position of the second axis X2) overlaps with the rotating electric machine 10 when viewed in the axial direction, and a part of the lower side is different from the rotating electric machine 10. Not duplicated.

in this way,
Assuming that the direction along the rotation axis of the rotor 12 is the axial direction L,
It is preferable that both the first output gear 55 and the second output gear 65 are arranged so as to overlap with the rotary electric machine 10 when viewed in the axial direction along the axial direction L.

According to this configuration, it is easy to reduce the size of the vehicle drive device 1 in the radial direction.

By the way, as shown in FIGS. 2 and 3, on the second side L2 in the axial direction with respect to the rotating electrical machine 10, at a position above the second intermediate gear 40 and overlapping the rotating electrical machine 10 in axial view, , no drive components are arranged. Therefore, in this embodiment, the power line 71 for driving the rotary electric machine 10 is arranged using the space. The power line 71 is for connecting the rotary electric machine 10 and a power supply device (not shown), and is composed of a bus bar, a conductor wire, or the like.

Further, as described above, the rotation sensor 18 is also provided on the second side L2 in the axial direction with respect to the rotary electric machine 10 . That is, both the power line 71 and the rotation sensor 18, which are electrical system components, are arranged on the second side L2 in the axial direction with respect to the rotary electric machine 10. As shown in FIG. Therefore, the wiring of the rotation sensor 18 can be put out of the case 9 together with the power line 71 . Therefore, wiring layout is facilitated.

A parking gear 17 is provided on a first axial side L<b>1 opposite to the power line 71 and the rotation sensor 18 with respect to the rotating electric machine 10 . The parking gear 17 is arranged between the rotating electric machine 10 and the planetary gear mechanism 20 in the axial direction L. As shown in FIG. The vehicle drive system 1 also includes a parking lock mechanism 73 that can be engaged with the parking gear 17 . The parking lock mechanism 73 prevents the rotation of the rotor shaft 15 while being engaged with the parking gear 17, thereby preventing the rotation of the two wheels W1 and W2.

in this way,
The direction along the rotation axis of the rotor 12 is defined as an axial direction L, the side of the rotor 12 on which the planetary gear mechanism 20 is arranged in the axial direction L is defined as an axial first side L1, and the opposite side is defined as an axial second side. As side L2,
A power line 71 connecting the rotating electric machine 10 and the power supply device is arranged on the second side L2 in the axial direction with respect to the rotor 12,
A parking gear 17 is preferably arranged on the axial first side L<b>1 with respect to the rotor 12 .

According to this configuration, it is possible to avoid interference between the power line 71 and the mechanism for locking the wheels W1 and W2 when the vehicle is stopped.

[Other embodiments]
(1) In the above embodiment, the first intermediate gear 30 is arranged on the planetary gear mechanism 20 side with respect to the rotating electrical machine 10 , and the second intermediate gear 40 and the third intermediate gear 45 are arranged on the planetary gear mechanism 20 side with respect to the rotating electrical machine 10 . The configuration in which the gear mechanism 20 is arranged on the opposite side has been described as an example. However, without being limited to such a configuration, for example, the arrangement of the rotary electric machine 10 and the planetary gear mechanism 20 in the axial direction L is switched, and the second relay gear 40 and the third relay gear 45 are on the planetary gear mechanism 20 side. , and the first intermediate gear 30 may be arranged on the opposite side.

(2) In the above embodiment, the configuration in which the power line 71 is arranged on the second side L2 in the axial direction with respect to the rotary electric machine 10 has been described as an example. However, without being limited to such a configuration, the power line 71 may be arranged on the first side L1 in the axial direction with respect to the rotary electric machine 10 . In this case, the parking gear 17 may be arranged on the second axial side L<b>2 opposite to the power line 71 with respect to the rotary electric machine 10 .

(3) In the above embodiment, the power line 71 and the parking gear 17 are arranged separately on both sides in the axial direction L with respect to the rotary electric machine 10, as an example. However, without being limited to such a configuration, the power line 71 and the parking gear 17 may be collectively arranged on one side in the axial direction L with respect to the rotary electric machine 10 .

(4) In the above embodiment, the configuration in which the parking gear 17 is arranged between the rotating electric machine 10 and the planetary gear mechanism 20 in the axial direction L has been described as an example. However, without being limited to such a configuration, the parking gear 17 may be arranged on the first side L1 in the axial direction of the planetary gear mechanism 20 .

(5) In the above embodiment, the configuration in which the rotation sensor 18 is arranged on the second side L2 in the axial direction with respect to the rotating electric machine 10 has been described as an example. However, without being limited to such a configuration, the rotation sensor 18 may be arranged on the first side L1 in the axial direction with respect to the rotating electric machine 10 .

(6) In the above embodiment, an example in which the planetary gear mechanism 20 is configured as a single pinion type has been described. However, without being limited to such a configuration, the planetary gear mechanism 20 may be configured in a double pinion type.

(7) The configurations disclosed in each of the above-described embodiments (including the above-described embodiments and other embodiments; the same applies hereinafter) are applied in combination with the configurations disclosed in other embodiments unless there is a contradiction. It is also possible to Regarding other configurations, the embodiments disclosed in this specification are examples in all respects, and can be modified as appropriate without departing from the scope of the present disclosure.

1: Vehicle Drive Device 2: Left and Right 9: Case 10: Rotating Electric Machine 11: Stator 12: Rotor 15: Rotor Shaft 17: Parking Gear 18: Rotation Sensor 20: Planetary Gear Mechanism 21 : first rotating element, 22: second rotating element, 23: third rotating element, 25: connecting member, 25A: cylindrical portion, 25B: plate-like portion, 25C: shaft portion, 30: first relay gear, 35 : connecting shaft 40: second intermediate gear 45: third intermediate gear 50: first output member 55: first output gear 60: second output member 65: second output gear 71: power line , 73: parking lock mechanism, 81: first rotor bearing, 82: second rotor bearing, 83: first relay bearing, 84: second relay bearing, 85: first output bearing, 86: second output bearing, L : axial direction, L1: axial direction first side, L2: axial direction second side, W1: first wheel, W2: second wheel, X1: first shaft, X2: second shaft, X3: third shaft

Claims (5)

a rotating electric machine having a rotor;
a first output member drivingly connected to the first wheel;
a second output member drivingly connected to the second wheel;
A first rotating element, a second rotating element, and a third rotating element are provided, and the rotation speeds of the first rotating element, the second rotating element, and the third rotating element are arranged in the order described. and a planetary gear mechanism,
the first rotating element is coupled to rotate integrally with the rotor;
the third rotating element is coupled to rotate integrally with the first intermediate gear;
the second rotating element is coupled to rotate integrally with the second intermediate gear;
the first relay gear meshes with a first output gear that rotates integrally with the first output member;
further comprising a third intermediate gear meshing with the second intermediate gear and the second output gear that rotates integrally with the second output member;
the rotating electric machine, the planetary gear mechanism, the first relay gear, and the second relay gear are arranged coaxially;
For a vehicle, wherein the first output member and the second output member are arranged on an axis different from that of the rotating electric machine, and the first output member and the second output member are arranged coaxially. drive. A direction along the rotation axis of the rotor is defined as an axial direction, a side of the rotor on which the planetary gear mechanism is arranged in the axial direction is defined as an axial first side, and an opposite side thereof is defined as an axial second side. ,
The first intermediate gear is arranged on the first side in the axial direction with respect to the planetary gear mechanism,
2. The vehicle driving device according to claim 1, wherein said second intermediate gear and said third intermediate gear are arranged on said axial second side with respect to said rotor. With the direction along the rotation axis of the rotor as the axial direction,
3. The vehicle driving device according to claim 1, wherein both said first output gear and said second output gear are arranged so as to overlap with said rotating electric machine when viewed in an axial direction along said axial direction. The vehicle drive device according to any one of claims 1 to 3, wherein a reduction ratio from said rotor to said first output member and a reduction ratio from said rotor to said second output member are the same. A direction along the rotation axis of the rotor is defined as an axial direction, a side of the rotor on which the planetary gear mechanism is arranged in the axial direction is defined as an axial first side, and an opposite side thereof is defined as an axial second side. ,
a power line connecting the rotating electric machine and a power supply device is arranged on the second side in the axial direction with respect to the rotor;
The vehicle drive device according to any one of claims 1 to 4, wherein a parking gear is arranged on the first side in the axial direction with respect to the rotor.

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