公开(公告)号：US20240421679A1

公开(公告)日：2024-12-19

申请号：US18701163

申请日：2022-07-08

Applicant: NHK SPRING CO., LTD.

Inventor： Yohei KAMEDA ,  Yoshikazu MINEDA ,  Soichi NAKAYAMA

IPC: H02K15/12 ,  H02K1/2733 ,  H02K1/30 ,  H02K15/03

Abstract: In the present rotor manufacturing method, when manufacturing a rotor including a rotor shaft, a permanent magnet held on the outer circumference of the rotor shaft via a resin, and a magnet reinforcing pipe formed in a cylindrical shape and covering the permanent magnet from the outer circumferential side, the liquid resin is filled between the rotor shaft and the permanent magnet, and the permanent magnet is broken and the magnet reinforcing pipe is expanded in diameter by the filling pressure of the resin.

公开(公告)号：US20220193932A1

公开(公告)日：2022-06-23

申请号：US17601425

申请日：2020-04-10

Applicant: NHK SPRING CO., LTD.

Inventor： Motoyuki OTSUKA ,  Takafumi HIRATA ,  Shimpei KUROKAWA ,  Soichi NAKAYAMA ,  Masahiro INABA

IPC: B25J18/06 ,  A61B17/29 ,  F16F1/32

Abstract: Provided is a flexible member that can exhibit excellent load resistance and flexibility while achieving a reduction in size. This flexible member includes: a main body part which has multiple wave washers stacked in an axial direction and joined to each other, and the main body part is able to be bent with respect to the axial direction due to elastic deformation of the wave washers; and a linking member that is elastically deformable, the linking member being provided at an end part of the main body part and being linked to other member. A deformation amount of the linking member is smaller than a deformation amount of the wave washer, when the main body part is bent.