Title:
DAMPING FORCE ADJUSTABLE SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2020/246316
Kind Code:
A1
Abstract:
In a third passage, a compression-side ultra-low velocity valve, which allows oil liquid to pass through from a bottom chamber (second chamber) of a cylinder to a top chamber (first chamber) thereof, is disposed so as to be parallel to an extension-side ultra-low velocity valve. This can expand oil liquid in the top chamber (first chamber) in an ultra-low velocity zone of a compression step, which causes a differential pressure between the top chamber side and the bottom chamber side (second chamber) in the ultra-low velocity valve on the compression side (fifth low-velocity valve). As a result, the ultra-low velocity valve on the compression side opens in the ultra-low velocity zone, which can cause a damping force of a valve characteristic of the ultra-low velocity valve.
Inventors:
KADOKURA KOSUKE (JP)
YAMASHITA MIKIO (JP)
YAMASHITA MIKIO (JP)
Application Number:
PCT/JP2020/020751
Publication Date:
December 10, 2020
Filing Date:
May 26, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/348; F16F9/46; F16F9/508
Foreign References:
| JP2016102574A | 2016-06-02 | |||
| JP2019027460A | 2019-02-21 | |||
| JP2016065559A | 2016-04-28 |
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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