Title:
COUPLING BODY, METHOD FOR MANUFACTURING COUPLING BODY AND BUFFER
Document Type and Number:
Japanese Patent JP2023125628
Kind Code:
A
Abstract:
To provide a coupling body capable of improving the strength of a connection part between a rod-shaped member and a mate member, a method for manufacturing a coupling body, and a buffer using them.SOLUTION: Since a finished surface roughness (surface roughness) of surface roughness adjustment parts 57, 58 is larger (rougher) than a finished surface roughness of pressure receiving surfaces 55A, 56A before surface roughness adjustment or a finished surface roughness of pressure receiving surfaces 55B, 56B without surface roughness adjustment, a frictional force (frictional resistance) generated between a material of a solenoid case 31 (mate member) that has flowed into first annular grooves 55, 56 and the inner surfaces of the first annular grooves 55, 56 of a piston rod 51 (rod-shaped member) increases, so that it is possible to improve the strength of a connection part 12 between the piston rod 51 and the solenoid case 31.SELECTED DRAWING: Figure 4
Inventors:
YABE CHIHIRO
KATAYAMA SHIGERO
ISHIMARU YU
KATAYAMA SHIGERO
ISHIMARU YU
Application Number:
JP2022029841A
Publication Date:
September 07, 2023
Filing Date:
February 28, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD
International Classes:
F16B4/00; B21D39/00; B21J5/06; F16F9/32
Attorney, Agent or Firm:
Patent Attorney Corporation Hanabusa Patent and Trademark Office