公开(公告)号：US20230003292A1

公开(公告)日：2023-01-05

申请号：US17944558

申请日：2022-09-14

Applicant: DENSO CORPORATION

Inventor： Tsuyoshi IMAI

IPC: F16H57/027

Abstract: A breather structure of an actuator includes: a breathing hole that extends through a rear housing between an inside and an outside of the rear housing; a filter that is configured to permit a flow of gas through the breathing hole via the filter while limiting a flow of liquid and a flow of solid through the breathing hole between the inside and the outside of the housing; and a blocker. The blocker is configured to block a portion of a path extending from an outer opening, which is an opening of the breathing hole opened to an outside space, to the filter to limit arrival of the liquid and the solid from the outside space to the filter.

公开(公告)号：US20200332874A1

公开(公告)日：2020-10-22

申请号：US16847816

申请日：2020-04-14

Applicant: DENSO CORPORATION

Inventor： Tsuyoshi IMAI ,  Hiroyuki KADO ,  Mikine KUME

IPC: F16H55/32 ,  F16H63/34

Abstract: A rotary actuator is used in a shift-by-wire system for a vehicle. A speed reducer includes a ring gear and a sun gear and reduces a rotational speed of the motor. An output shaft outputs rotation of the motor at a reduced rotational speed by the speed reducer. A regulating pin is disposed in a fixing member and allows the sun gear to revolve around a rotational axis of the motor and to rotate about an eccentric axis. The regulating pin is a separate member from the fixing member. The regulating pin has a strength equal to or greater than a maximum torque reaction force received from the sun gear. A first difference in hardness between an engaging portion and the sun gear is set to be less than a second difference in hardness between the fixing member and the sun gear.