公开(公告)号：US11761509B2

公开(公告)日：2023-09-19

申请号：US17900418

申请日：2022-08-31

Applicant: Hitachi Astemo, Ltd.

Inventor： Gota Nakano ,  Chikara Yanagisawa

IPC: F16F9/46 ,  F16F9/18 ,  F16F9/34 ,  F16F9/348 ,  F16F9/516 ,  B60G13/08 ,  B60G17/08 ,  F16F9/512

CPC classification number: F16F9/46 ,  F16F9/18 ,  F16F9/185 ,  F16F9/34 ,  F16F9/348 ,  F16F9/3484 ,  F16F9/3485 ,  F16F9/516 ,  B60G13/08 ,  B60G17/08 ,  B60G2202/24 ,  B60G2206/41 ,  B60G2500/114 ,  B60G2800/162 ,  F16F9/5126 ,  F16F2222/12 ,  F16F2226/04 ,  F16F2228/066 ,  F16F2232/08 ,  F16F2234/02

Abstract: A damping force generating mechanism includes: a flow passage formation part that forms a flow passage through which a liquid flows; and a valve that is configured to control a flow of the liquid in the flow passage. The flow passage formation part includes a first seat part that is provided radially outward of a flow passage port of the flow passage, protrudes from the flow passage port and contacts the valve, a second seat part that is provided radially outward of the first seat part, protrudes from the flow passage port and contacts the valve, and a circulation part having an orifice that allows the liquid to flow from the flow passage port toward the second seat part in a state in which the valve is in contact with the first seat part.