公开(公告)号：US20230313886A1

公开(公告)日：2023-10-05

申请号：US18174650

申请日：2023-02-27

Applicant: NIDEC CORPORATION

Inventor： Hideaki MATSUO ,  Mitsuhiro HARA ,  Keisuke ASO ,  Naohiro WADA ,  Yusuke MAKINO

IPC: F16H63/34

CPC classification number: F16H63/3466 ,  F16H63/3425

Abstract: A drive apparatus includes a housing including a motor, a power transmission unit, a parking mechanism, and a gear accommodation portion. The parking mechanism includes a parking gear, a pawl, a transmission unit, and a sleeve. The transmission unit includes a cam rod and a cam attached to the cam rod to operate the pawl. The cam is guided by the sleeve. The gear accommodation portion has first and second housing members, a breather, and a dividing wall partitioning a space where the breather opens inside the gear accommodation portion. The second housing member is provided with a holding recess that opens to a first side in an axial direction and holds the sleeve. The first housing member is provided with a retaining wall that covers a surface facing a second side in the axial direction of the sleeve. The retaining wall is a part of the dividing wall.

公开(公告)号：US20230204102A1

公开(公告)日：2023-06-29

申请号：US18066283

申请日：2022-12-15

Applicant: NIDEC CORPORATION

Inventor： Hideaki MATSUO ,  Mitsuhiro HARA ,  Masashi YUBOKU

IPC: F16H63/34

CPC classification number: F16H63/3416 ,  F16H63/3466

Abstract: A parking mechanism includes an actuator having a manual shaft rotating around the first axis, a flange provided on an outer periphery of the manual shaft, a cam rod having a coupling portion coupled to the flange and a rod body moveable along a second axis orthogonal to the first axis with a movement of the flange, a coil spring attached to the rod body, a cam that is attached to the rod body and moves along the second axis by motion of the rod body transmitting via the coil spring, a pawl member having a meshing portion and operating with a movement of the cam, and a parking gear having a tooth portion with which the meshing portion meshes. The self-holding torque of the actuator is larger than the torque applied to the manual shaft at the time of maximum compression of the coil spring.