Title:
SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2019/008902
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a shock absorber with which the spring strength of a spring member that impels a valve body in a control valve can be more freely set. This shock absorber comprises a control valve that: controls fluid flow generated inside a cylinder by movement of a piston slidably fitted inside the cylinder; and generates damping force. The control valve has: a valve body and a valve seat that, together, form an opening/closing section of a flow path; an actuator that generates a force that moves the valve body in response to an electric current; and a spring device (60) that impels the valve body in the direction opposite to the direction in which the actuator moves the valve body. The spring device has: a spring member (60) having a first spring section (60b) and a second spring section (60c); and a restricting section that restricts spring displacement of the first spring section (60b) relative to at least a prescribed spring displacement of the spring member (60).
Inventors:
SETO SHINJI (JP)
YAMAOKA FUMIYUKI (JP)
YAMASHITA MIKIO (JP)
YUNO OSAMU (JP)
YAMAOKA FUMIYUKI (JP)
YAMASHITA MIKIO (JP)
YUNO OSAMU (JP)
Application Number:
PCT/JP2018/018496
Publication Date:
January 10, 2019
Filing Date:
May 14, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/46; B60G17/015; F16F1/32; F16F9/34; F16K31/06
Foreign References:
| JP2014199076A | 2014-10-23 | |||
| EP1536169A1 | 2005-06-01 | |||
| US4771808A | 1988-09-20 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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