US 12,233,706 B2
Vehicle drive system
Yuya Yamaoka, Aki-gun (JP); Ryuichiro Amano, Aki-gun (JP); Yoshiaki Noguchi, Aki-gun (JP); Masaaki Kashimoto, Aki-gun (JP); Yusuke Oki, Aki-gun (JP); Li-Hsuan Huang, Taichung (TW); and Sheng-Wei Chang, Taichung (TW)
Assigned to Mazda Motor Corporation, Hiroshima (JP)
Filed by Mazda Motor Corporation, Hiroshima (JP)
Filed on Dec. 7, 2022, as Appl. No. 18/062,722.
Claims priority of application No. 2021-207831 (JP), filed on Dec. 22, 2021.
Prior Publication US 2023/0191898 A1, Jun. 22, 2023
Int. Cl. B60K 11/04 (2006.01); B60K 6/405 (2007.10)
CPC B60K 11/04 (2013.01) [B60K 6/405 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A vehicle drive system comprising:
a vehicle travel motor having a motor shaft that extends in a first direction orthogonal to an up-down direction;
a generator that is located on a side of the motor in the first direction and generates electricity to be supplied to the motor;
a reduction drive that is located between the motor and the generator in the first direction and meshes with the motor shaft to reduce output of the motor; and
a housing that accommodates the motor, the reduction drive, and the generator, wherein
at a position above the motor shaft, an oil passage, through which oil is supplied to each of the motor, the reduction drive, and the generator, is integrally formed with the housing,
the housing has an oil reservoir for storing the oil in a lower portion of the housing,
an oil pipe that is attached to the housing within the housing and supplies the oil from the oil reservoir to the oil passage is further provided,
at a position between the motor and the generator, the reduction drive is offset from the motor shaft in a second direction that is orthogonal to the first direction,
the oil pipe is located between the motor and the generator in the first direction, and at least part of the oil pipe is located on an opposite side of the reduction drive with the motor shaft being interposed therebetween in the second direction, and
at least a portion of the oil pipe is arranged to overlap the motor when viewed from the first direction.