公开(公告)号：US20220209625A1

公开(公告)日：2022-06-30

申请号：US17563437

申请日：2021-12-28

Applicant: Nidec Corporation

Inventor： Kengo TAKAMURA ,  Hibiki TAKADA ,  Shohei FUJIMOTO

IPC: H02K9/19 ,  H02K5/20 ,  H02K7/10

Abstract: A drive device includes a motor including a rotor rotatable about a central axis, a transmission connected to the motor, and a housing including a motor housing accommodating the motor and a transmission housing accommodating the transmission. A first fluid is accommodated in the transmission housing. The housing includes a first flow path through which the first fluid flows and a second flow path through which the second fluid flows. The first flow path includes a supply flow path that supplies the first fluid in the transmission housing to the inside of the motor housing, and a collection flow path that extends from the inside of the motor housing to the inside of the transmission housing. At least a portion of the second flow path is located radially outside the motor. At least a portion of the collection flow path is located radially outside the second flow path.

公开(公告)号：US20220205529A1

公开(公告)日：2022-06-30

申请号：US17562209

申请日：2021-12-27

Applicant: Nidec Corporation

Inventor： Hibiki TAKADA ,  Kengo TAKAMURA

IPC: F16H57/04 ,  H02K7/116 ,  H02K7/08

Abstract: A drive device includes a motor housing and a transmission housing fixed to one side in an axial direction of the motor housing that includes a first housing and a second housing fixed to another side in the axial direction of the first housing. The transmission housing includes a third housing fixed to the first housing and a fourth housing fixed to one side in the axial direction of the third housing. The first housing includes a first opposing wall axially opposing the transmission housing, and a bearing holding portion on the first opposing wall. The third housing includes a second opposing wall opposing the first opposing wall. The housing includes an oil supply path extending axially through the second opposing wall from the inside of the transmission housing. The oil supply path includes a supply port to supply oil to the bearing.