US 11,833,904 B2
Vehicle drive device
Keishi Morita, Kariya (JP); and Hiroshi Ishiyama, Kariya (JP)
Assigned to AISIN CORPORATION, Kariya (JP)
Appl. No. 17/622,148
Filed by AISIN CORPORATION, Aichi (JP)
PCT Filed Sep. 27, 2019, PCT No. PCT/JP2019/038285
§ 371(c)(1), (2) Date Dec. 22, 2021,
PCT Pub. No. WO2021/059510, PCT Pub. Date Apr. 1, 2021.
Prior Publication US 2022/0242221 A1, Aug. 4, 2022
Int. Cl. B60K 6/48 (2007.10); B60K 6/26 (2007.10); B60K 6/387 (2007.10)
CPC B60K 6/48 (2013.01) [B60K 6/26 (2013.01); B60K 6/387 (2013.01); B60K 2006/4825 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vehicle drive device comprising:
an input member drivingly connected to an internal combustion engine;
a rotary electric machine including a stator and a rotor that is disposed on an inner side in a radial direction with respect to the stator, and functioning as a driving force source for wheels;
a transmission that changes a speed of rotation transmitted from the rotary electric machine side;
a rotor support member that supports the rotor;
a first engagement device and a second engagement device disposed side by side in an axial direction on the inner side in the radial direction with respect to the rotor,
the first engagement device being disposed in a power transmission path between the input member and the rotary electric machine, and
the second engagement device being disposed in a power transmission path between the rotary electric machine and the transmission, wherein:
the vehicle drive device further includes a first bearing that rotatably supports the rotor support member, and a first inner support member that supports a first friction member of the first engagement device from the inner side of the first friction member in the radial direction;
the first inner support member includes a tubular support portion having a tubular shape extending along the axial direction and supporting the first friction member, and a radially extending support portion provided to extend to the inner side in the radial direction from the tubular support portion;
the radially extending support portion is connected to the input member such that the input member and the first inner support member rotate integrally;
when in the axial direction, a side on which the first engagement device is disposed with respect to the second engagement device is defined as a first side in the axial direction, and a side opposite to the first side in the axial direction is defined as a second side in the axial direction; and
the first bearing is disposed on the first side in the axial direction with respect to the rotor and is disposed on an outer side in the radial direction with respect to the tubular support portion;
a case for accommodating part of the input member, the rotary electric machine, the transmission, the rotor support member, the first engagement device, and the second engagement device; and
a second inner support member that supports a second friction member of the second engagement device from the inner side in the radial direction, wherein:
the case includes a radially extending portion disposed on the second side in the axial direction with respect to the rotor support member and provided to extend along the radial direction, and a tubular protruding portion having a tubular shape protruding in the axial direction from the radially extending portion and disposed so as to extend on the inner side in the radial direction with respect to the rotor support member;
the second inner support member is provided with a second communication hole that passes through the second inner support member in the radial direction; and
the tubular protruding portion is provided with a second lubricating oil passage that is connected to a first radial oil passage provided in the radially extending portion and that supplies oil for lubricating the second friction member to the second communication hole.