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1. (WO2018180453) BUFFER

Pub. No.:    WO/2018/180453    International Application No.:    PCT/JP2018/009665
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Mar 14 00:59:59 CET 2018
IPC: F16F 9/32
F16B 39/16
F16F 9/50
Inventors: CHO Gai
張 凱
MIWA Masahiro
三輪 昌弘
A buffer (D) is provided with: a piston rod (3) on the outer periphery of which a first thread groove (3a) and a second thread groove (3b) different in pitch are formed; a first nut (5) that is engaged with the first thread groove (3a) so as to fix a piston (2) to the piston rod (3); and a second nut (61) that is engaged with the second thread groove (3b) so as to fix a damping force adjustment part (4) to the piston rod (3), wherein the piston nut (5) and the nut member (61) are integrated in such a manner that the relative rotations thereof in the circumferential direction are blocked by a connection means.