公开(公告)号：US20230339124A1

公开(公告)日：2023-10-26

申请号：US17799384

申请日：2021-02-12

Applicant: NHK SPRING CO., LTD.

Inventor： Motoyuki OTSUKA ,  Takafumi HIRATA ,  Shimpei KUROKAWA ,  Yuki HOTODA

IPC: B25J18/06

CPC classification number: B25J18/06 ,  A61M25/0138

Abstract: Provided are a bending structure and a joint function part, capable of stabilizing bending operation and simplifying a structure. An inner coiled part is located into an outer coiled part. The outer coiled part and the inner coiled part have a plurality of gaps distancing adjacent coils in an axial direction, and the coils of the inner coiled part fit between the adjacent coils of the outer coiled part while being in contact with the adjacent coils. A dimension P is set in a range meeting πR/4N≤P

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.