Title:
SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2020/261683
Kind Code:
A1
Abstract:
This shock absorber has a cylinder in which a working fluid is sealed, a piston that is provided to be capable of sliding inside the cylinder and that divides the cylinder interior into two chambers, a piston rod linked to the piston and extended to the exterior of the cylinder, a first passage and a second passage through which the working fluid flows out due to the movement of the piston, a first damping force generation mechanism that is provided in the first passage and that generates damping force, and a second damping force generation mechanism that is provided in the second passage and that generates damping force. The second damping force generation mechanism has a sub valve provided on one side of the second passage, and a volume-variable mechanism that changes the volume of a volume chamber provided in parallel with the second passage.
Inventors:
YAMASHITA MIKIO (JP)
KOTANI TAKAMASA (JP)
KOTANI TAKAMASA (JP)
Application Number:
PCT/JP2020/013424
Publication Date:
December 30, 2020
Filing Date:
March 25, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/32; F16F9/348; F16F9/508; F16F9/516
Foreign References:
| JP2013053683A | 2013-03-21 | |||
| US20140048365A1 | 2014-02-20 | |||
| JP2015059621A | 2015-03-30 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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