Title:
SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2022/024766
Kind Code:
A1
Abstract:
This shock absorber comprises: a first passage (92) through which a working fluid flows into a chamber (23) on the downstream side from a chamber on the upstream side, as a result of the movement of a piston (21); a first damping force generation mechanism (41) that is provided in the first passage (92) and generates a damping force; a second passage (182) provided separately from the first passage (92); a second damping force generation mechanism (183) that is provided in the second passage (182) and opens a valve and generates damping force when the piston speed is lower than for the first damping force generation mechanism (41); a third passage (512) provided separately from the second passage (182); a variable volume mechanism (186) provided in the third passage (512); a fourth passage (521) provided separately from the third passage (512); and a relief mechanism (522) that is provided in the fourth passage (521) and opens after the second damping force generation mechanism (183) opens.
Inventors:
KOTANI TAKAMASA (JP)
Application Number:
PCT/JP2021/026490
Publication Date:
February 03, 2022
Filing Date:
July 14, 2021
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F16F9/34; F16F9/48; F16F9/50
Foreign References:
| JP2012067880A | 2012-04-05 | |||
| JP2018514728A | 2018-06-07 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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