公开(公告)号：US20220099161A1

公开(公告)日：2022-03-31

申请号：US17427230

申请日：2020-09-01

Applicant: DENSO CORPORATION

Inventor： Kazuki MARUO ,  Masahito SAKAI ,  Fumihiro SHIMIZU

IPC: F16H1/32 ,  H02K7/116

Abstract: A speed reducer includes a helical gear, an eccentric shaft and a slider plate. The speed reducer also includes a transmission gear and an output gear body. The transmission gear is supported at a first support part, transmission gear spinning is restricted by engagement with the slider plate, and the transmission gear revolves by the helical gear rotating with the eccentric shaft. The output gear body rotates by the transmission gear revolving. The transmission gear includes a pair of restricting protrusions protruding toward the slider plate side. The restricting protrusions have engaging surfaces that touch the slider plate wherein the engaging surfaces oppose the slider plate in a radial direction of the transmission gear. Surfaces at opposite sides of the restricting protrusions from the slider plate are formed, as seen in the axis direction of the transmission gear, to be convex to the opposite sides thereof from the slider plate.

公开(公告)号：US20210324942A1

公开(公告)日：2021-10-21

申请号：US17258912

申请日：2019-07-08

Applicant: DENSO CORPORATION

Inventor： Masahito SAKAI ,  Kazuki MARUO ,  Tomoki YAMASHITA ,  Fumihiro SHIMIZU ,  Hiroyuki OKADA

IPC: F16H1/32 ,  H02K7/116

Abstract: A speed reducer including: a first gear; an eccentric shaft joined to the first gear, the eccentric shaft has first and second supporting portions offset in a rotation radial direction with respect to a first gear rotation shaft; a fixed gear at an eccentric shaft radial direction outer side, and whose rotation is restricted; a transmitting gear supported at the first supporting portion and meshes with the fixed gear, and the transmitting gear revolves around the first gear rotation shaft and rotates around its own axis; an outputting portion rotating due to the transmitting gear revolving and rotating around its own axis; and a locking gear supported at the second supporting portion and meshes with the fixed gear, and the locking gear revolves around the first gear rotation shaft and rotates around its own axis, and rotation of the outputting portion is restricted.