Title:
DAMPING FORCE ADJUSTMENT-TYPE SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2021/020192
Kind Code:
A1
Abstract:
According to the present invention, a valve spool and a valve spring fixing member are coupled by configuring, as separate bodies, a valve spool (valve body) and a valve spring fixing member that receives an inner circumferential edge section of a fail-safe spring (valve spring) and by press-fitting a slidable section of the valve spool into a shaft hole of the valve spring fixing member, and thus, the slidable section can serve as the outermost diameter section in the valve spool. Accordingly, the slidable section can be finished via centerless grinding, the productivity of the valve spool and the damping force adjustment-type shock absorber can be improved, and the manufacturing costs can be reduced.
Inventors:
YUNO OSAMU (JP)
Application Number:
PCT/JP2020/028033
Publication Date:
February 04, 2021
Filing Date:
July 20, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16F9/34; F16F9/46
Domestic Patent References:
| WO2019049844A1 | 2019-03-14 |
Foreign References:
| JPS5749573A | 1982-03-23 | |||
| JPS5937309A | 1984-02-29 | |||
| JP2008089044A | 2008-04-17 |
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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