公开(公告)号：US11892060B2

公开(公告)日：2024-02-06

申请号：US17926873

申请日：2021-12-03

Applicant: NSK LTD.

Inventor： Hiroshi Kawahara ,  Hiroki Hashiguchi ,  Hirofumi Itagaki ,  Azusa Hidaka ,  Hiroki Nishida ,  Naofumi Fujita ,  Hikari Yoshimi ,  Naohiro Hitomi ,  Masahiro Kita

IPC: F16H13/08 ,  F16H13/14 ,  F16H57/04

CPC classification number: F16H13/08 ,  F16H13/14 ,  F16H57/043 ,  F16H57/0486

Abstract: A frictional roller reducer having a sun roller; a ring roller; a plurality of intermediate rollers having rolling surfaces coming in rolling contact with the sun roller and the ring roller; the sun roller or the ring roller having a pair of roller elements including inclined surface portions on a circumferential surface coming in rolling with rolling surfaces, the inclined surface portions inclined in directions going toward the intermediate rollers in a radial direction as going away from each other in the axial direction; a pressing device pressing the pair of roller elements in directions going closer to each other, and an elastic member arranged between the pair of roller elements, the elastic member urging the pair of roller elements in directions going away from the rolling surface of the intermediate rollers.