公开(公告)号：US20180172118A1

公开(公告)日：2018-06-21

申请号：US15527894

申请日：2016-04-12

Applicant: NSK LTD.

Inventor： Ryosuke FUJITA ,  Hiroshi KAWAHARA ,  Hiroyasu YOSHIOKA

IPC: F16H13/14 ,  F16H13/08

CPC classification number: F16H13/14 ,  F16H13/06 ,  F16H13/08

Abstract: A pivot holder of a friction-roller-type reduction gear has a pair of bearing parts configured to support a rotational shaft of an intermediate roller and having a pivot axis at an eccentric position from a center of the rotational shaft, and a bridging part configured to integrally couple the pair of bearing parts. A carrier has a holder support part configured to rotatably support the bearing parts. An interaxial distance between a center of the pivot axis and the center of the rotational shaft is equal to or smaller than a maximum radius of an outer diameter of the intermediate roller, and the center of the pivot axis is located on an applying line of a torque reaction force of transmission torque to be applied to the pivot holder.