Power transmission unit
AssigneeKanzaki Kokyukoki Mfg. Co., Ltd.
InventorsKoji Kiyooka, Ryo Motooka, Ken Morishita, Hitoshi Sawada, Akihiro Ima
Life of this patent
Estimating the term…
Abstract
Disclosed is a power transmission unit including a motor case that is provided on the same side as a second axle with respect to a center between a first axle and the second axle, separated to right and left, in a right-left direction and that houses the electric motor, a first axle case housing a reduction gear mechanism, a differential gear mechanism, and the first axle, and a second axle case that is fixed to the first axle case in a separable manner and houses the second axle.
Claims5
An electric-vehicle power transmission unit in which power of an electric motor is transmitted to a first axle and a second axle separated to right and left through a reduction gear mechanism and a differential gear mechanism, the electric-vehicle power transmission unit comprising:
- a motor case that is provided on a same side as the second axle with respect to a center between the first axle and the second axle in a right-left direction and that houses the electric motor;
- a first axle case housing the reduction gear mechanism, the differential gear mechanism, and the first axle;
- and
- a second axle case housing the second axle that is longer than the first axle that is fixed to the first axle case in a separable manner and houses the second axle;
- wherein
- a recessed portion is formed in a portion of the second axle case opposed to the motor case, and
- part of the motor case enters the recessed portion.
An electric-vehicle power transmission unit in which power of an electric motor is transmitted to a first axle and a second axle separated to right and left through a reduction gear mechanism and a differential gear mechanism, the electric-vehicle power transmission unit comprising:
- a motor case that is provided on a same side as the second axle with respect to a center between the first axle and the second axle in a right-left direction and that houses the electric motor;
- a first axle case housing the reduction gear mechanism, the differential gear mechanism, and the first axle;
- and
- a second axle case that is fixed to the first axle case in a separable manner and houses the second axle, wherein
- a thrust washer is provided between the first axle case and a side bevel gear assembled to the second axle so as not to be rotatable relative thereto, and
- the thrust washer has higher hardness than the first axle case and is prevented from rotating by an engagement recessed portion formed in the first axle case.
Dependencies are inferred from the claim text.