公开(公告)号：US12222018B2

公开(公告)日：2025-02-11

申请号：US17640857

申请日：2020-09-25

Applicant: Hitachi Astemo, Ltd.

Inventor： Kazuya Yamada ,  Kentaro Yamada ,  Reiji Nakagawa ,  Hiroyasu Sato ,  Sadatomo Matsumura ,  Wataru Takagi

IPC: F16F9/32 ,  B60G13/08 ,  F16F9/18

Abstract: This shock absorber includes a piston main body and a piston band. The piston main body has, at an outer peripheral portion thereof, a stepped portion including a large-diameter surface portion, a stepped surface portion and a small-diameter surface portion. The piston band has, at an outer peripheral portion thereof, a large diameter portion, a medium diameter portion formed so as to have a smaller diameter than the large diameter portion, and a small diameter portion formed between the large diameter portion and the medium diameter portion so as to have a smaller diameter than the medium diameter portion, in a state before being disposed in a cylinder. At one end on the side close to a tip portion of a piston rod, an inner peripheral surface is inclined toward the piston main body side from the large-diameter surface portion to a small-diameter surface portion of the stepped portion.