公开(公告)号：US20230193984A1

公开(公告)日：2023-06-22

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.

公开(公告)号：US20210277964A1

公开(公告)日：2021-09-09

申请号：US17053902

申请日：2019-04-26

Applicant: NSK LTD.

Inventor： Yuya DAIKOKU ,  Hirotaka KISHIDA ,  Hiroki HASHIGUCHI ,  Toshirou TOYODA

IPC: F16D45/00 ,  F16H25/22 ,  F16D43/18

Abstract: Provided is a reverse input blocking clutch capable of easily releasing a state in which rotation of an output member is prevented or suppressed.
The reverse input blocking clutch 5 includes an input member 14, an output member 15, a pressed member 16, and an engaging member 17. When a rotational torque is inputted to the input member 14, the engaging member 17 moves in a direction away from a pressed surface 28 of the pressed member 16 due to engagement with the input member 14, and transmits the rotational torque inputted to the input member 14 to the output member 15 due to engagement with the output member 15; and when rotational torque is reversely inputted to the output member 15, moves in the direction closer to the pressed surface 28 based on engagement with the output member 15, and by being pressed against the pressed surface 28 does not transmit the rotational torque reversely inputted to the output member 15 to the input member 14, or transmits only part thereof to the input member 14 due to engagement with the input member 14.