公开(公告)号：US20240128828A1

公开(公告)日：2024-04-18

申请号：US18273124

申请日：2021-09-13

申请人： Hitachi Astemo, Ltd.

发明人： Kenta SUZUKI ,  Shogo MIYAMOTO ,  Takaki ITAYA ,  Kosaku ONO

IPC分类号： H02K5/20 ,  F16H57/04 ,  H02K9/197

CPC分类号： H02K5/203 ,  F16H57/0423 ,  F16H57/0476 ,  H02K9/197 ,  H02K5/1732

摘要： Provided is a vehicle drive motor capable of maintaining lubrication of a bearing even in a case where an electric vehicle is not operated for a long period of time. The vehicle drive motor includes a casing in which a cylindrical stator coil is fixed to an inner peripheral surface and an oil passage is provided in an upper portion, an output shaft arranged in the casing and having a rotor fixed to a position facing the stator coil, a bearing that supports the output shaft, and an oil retaining portion that is arranged to face the bearing and stores oil supplied from the oil passage. The oil retaining portion is a pocket-shaped receptacle in which an upper side is lower than a lower end of the output shaft and a lower side is along a lower outer periphery of the bearing as viewed from an axial direction of the output shaft in front view.