公开(公告)号：US20240360885A1

公开(公告)日：2024-10-31

申请号：US18139969

申请日：2023-04-27

Applicant: Hitachi Astemo, Ltd.

Inventor： Markus STEEB ,  Shivanand SANKARAN ,  Andrew Feldkamp

IPC: F16F9/348

CPC classification number: F16F9/3484 ,  F16F9/3481 ,  F16F2222/126

Abstract: This shock absorber includes a cylinder having an inner chamber; a cage body partitioning the inner chamber into first and second chambers, and includes a first passage allowing communication between the first and second chambers, a first seat part, a second passage allowing communication between the first and second chambers, and a second seat part. A first valve which is a first valve coming into contact with the first seat part to close the first passage and being separated from the first seat part to open the first passage, and in which a communication hole communicating with the second passage is formed. A second valve comes into contact with the second seat part to close the second passage and is separated from the second seat part to open the second passage. A passage adjusting disc is provided between the first valve and the cage body.