US 12,449,032 B2
Vehicle drive device
Kazushige Mitsuhashi, Kariya (JP); Mitsuhiko Kato, Kariya (JP); Takuya Watanabe, Kariya (JP); and Tsubasa Deguchi, Kariya (JP)
Assigned to AISIN CORPORATION, Kariya (JP)
Appl. No. 18/726,320
Filed by AISIN CORPORATION, Aichi (JP)
PCT Filed Mar. 27, 2023, PCT No. PCT/JP2023/012206
§ 371(c)(1), (2) Date Jul. 2, 2024,
PCT Pub. No. WO2023/190347, PCT Pub. Date Oct. 5, 2023.
Claims priority of application No. 2022-059334 (JP), filed on Mar. 31, 2022.
Prior Publication US 2025/0155013 A1, May 15, 2025
Int. Cl. F16H 57/04 (2010.01); B60K 1/00 (2006.01); B60K 17/16 (2006.01); F16H 37/08 (2006.01)
CPC F16H 57/0471 (2013.01) [B60K 1/00 (2013.01); B60K 17/165 (2013.01); F16H 37/082 (2013.01); F16H 57/043 (2013.01); F16H 57/0476 (2013.01); F16H 57/0483 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A vehicle drive device comprising:
a shaft member to which a driving force of a drive source is input; and
a speed reducer that reduces a speed of rotation of the shaft member and outputs the rotation to an output member drivingly connected to a wheel, wherein
the speed reducer is a planetary gear mechanism including a planetary gear including a first gear portion and a second gear portion, and a carrier that rotatably supports the planetary gear,
assuming that a direction along a rotation axis of the carrier is an axial direction, one side in the axial direction is a first axial side, the other side in the axial direction is a second axial side, a direction orthogonal to the rotation axis of the carrier is a carrier radial direction, and a direction orthogonal to a rotation axis of the planetary gear is a planetary radial direction,
the first gear portion and the second gear portion are disposed side by side in the axial direction with the first gear portion and the second gear portion meshing with different gears,
the carrier includes a support shaft disposed so as to extend in the axial direction through an inner side of the planetary gear in the planetary radial direction, a first oil receiving portion, and a second oil receiving portion,
a planetary bearing is disposed between an outer peripheral shaft surface that is an outer peripheral surface of the support shaft and an inner peripheral gear surface that is an inner peripheral surface of the planetary gear,
the carrier is provided with a first oil passage and a second oil passage that are separated from each other and the first oil passage and the second oil passage do not communicate with each other within the carrier,
the first gear portion is disposed on the first axial side of the second gear portion,
the first oil passage is formed so as to communicate a first side surface opening that is open to a first carrier side surface that is a side surface of the carrier oriented to the first axial side with a first outer peripheral opening that is open to the outer peripheral shaft surface,
the first outer peripheral opening is disposed so as to overlap the first gear portion in a planetary radial view along the planetary radial direction,
the second oil passage is formed so as to communicate a second side surface opening that is open to a second carrier side surface that is a side surface of the carrier oriented to the second axial side with a second outer peripheral opening that is open to the outer peripheral shaft surface on the second axial side of the first outer peripheral opening,
the second outer peripheral opening is disposed so as to overlap the second gear portion in the planetary radial view,
the first oil receiving portion is provided so as to protrude from the first carrier side surface to the first axial side, and is formed so as to guide oil supplied from an inner side in the carrier radial direction to the first side surface opening, and
the second oil receiving portion is provided so as to protrude from the second carrier side surface to the second axial side, and is formed so as to guide the oil supplied from the inner side in the carrier radial direction to the second side surface opening.