Patent ID: 11859707
Assignee: JATCO LTD
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC F

Claim 0:
1. A power transmission device comprising:
a motor;
a planetary gear mechanism having a portion that overlaps the motor in an axial direction;
an axial direction wall part having a portion positioned between the planetary gear mechanism and the motor;
a plate provided between the axial direction wall part and a pinion gear of the gear mechanism; and
a box in which the motor, the planetary gear mechanism, the axial direction wall part, and the plate are housed, wherein
the box defines a breather hole that communicates with a breather chamber,
the box has a radial direction wall part having a portion positioned between the plate and the breather chamber in a radial direction, and
the plate has a portion positioned between the pinion gear and the breather hole.