Title:
DAMPER AND FREQUENCY-DEPENDENT MECHANISM
Document Type and Number:
WIPO Patent Application WO/2022/249542
Kind Code:
A1
Abstract:
This damper has: a piston (18) fitted into a cylinder (2) and dividing the inside of the cylinder (2); a first passage (210) through which a working fluid flows in the cylinder (2) owing to the movement of the piston (18); a damping valve (63) that is disposed in the first passage (210) and that changes the flow path area on the basis of the flow of the working fluid; a second passage (181) communicating with the upstream side of the damping valve (63) via a throttle (198); a third passage (173) communicating with the downstream side of the damping valve (63); a passage section (171) provided between the second passage (181) and the third passage (173); and an elastic member (73) having rubber elasticity and disposed in the passage section (171). The elastic member (73) is provided with: a seal part (191, 192) for preventing the working fluid from flowing from the second passage (181) to the third passage (173); and a pressure receiving part (193) for receiving pressure from the second passage (181).
Inventors:
NAGAYAMA HIDEO (JP)
Application Number:
PCT/JP2022/002714
Publication Date:
December 01, 2022
Filing Date:
January 25, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F16F9/32; F16F9/50
Foreign References:
| JP2020002976A | 2020-01-09 | |||
| JP2008069940A | 2008-03-27 | |||
| JP2021055850A | 2021-04-08 | |||
| JP2015090212A | 2015-05-11 | |||
| KR20140081158A | 2014-07-01 | |||
| US20150247545A1 | 2015-09-03 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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