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.

公开(公告)号：US11365764B2

公开(公告)日：2022-06-21

申请号：US17262911

申请日：2019-07-22

Applicant: NSK LTD.

Inventor： Daisuke Gunji ,  Hiroyasu Kumagai ,  Naohiro Hitomi ,  Ricardo Rodriguez Lopez

IPC: F16C41/00 ,  B60B27/00 ,  F16C33/72

Abstract: A rolling bearing unit includes: an inner ring member having a recess on a first side in an axial direction along a rotation axis, which is recessed toward a second side in the axial direction; an outer ring member on an outer peripheral side of the inner ring member; a rolling body between the inner ring member and the outer ring member; a non-contact transmitter using electric field coupling capable of transmitting at least one of an electric power or a signal and including a stationary-side transmission part including a stationary-side electrode and a rotary-side transmission part including a rotary-side electrode facing the stationary-side electrode; and a covering member supported by the first side of the outer ring member in the axial direction, covering the first side of the inner ring member in the axial direction, and fixing the stationary-side transmission part to the first side in the axial direction.

公开(公告)号：US11421736B2

公开(公告)日：2022-08-23

申请号：US17257154

申请日：2019-07-03

Applicant: NSK LTD.

Inventor： Naohiro Hitomi ,  Daisuke Gunji ,  Hiroyasu Kumagai ,  Ricardo Rodriguez Lopez

IPC: F16C41/00 ,  F16C33/72 ,  B60B27/00

Abstract: A rolling bearing unit includes: an inner ring member having a recess on a first side in an axial direction, the recess being recessed toward a second side in the axial direction; an outer ring member disposed on the outer periphery side of the inner ring member; a rolling body disposed between the inner ring member and the outer ring member and rotatably supporting the inner ring member with respect to the outer ring member; a transmitter capable of transmitting at least one of electric power or a signal, at least a part of the transmitter being accommodated inside the recess of the inner ring member; and a covering member that is supported by the first side of the outer ring member in the axial direction, covers the first side of the inner ring member in the axial direction, and fixes the transmitter.