Title:
DAMPING VALVE AND SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2022/070642
Kind Code:
A1
Abstract:
A damping valve (1) is provided with: a disk (2) having a port (2a) and a valve seat (2b) which surrounds the port (2a); a leaf valve (3) which opens and closes the port (2a) as a result of a front surface side thereof being seated on and removed from the valve seat (2b); a cylindrical housing (4) which is provided to a rear surface side of the leaf valve (3); an annular spool (6) which abuts the rear surface of the leaf valve (3) and is slidably inserted into the inner circumference of the housing (4), and which forms a back pressure chamber (5) that, together with the housing (4), inwardly applies back pressure to the leaf valve (3); an annular spring supporting section (4g) which is on the rear surface side of the leaf valve (3) and faces the inside of the back pressure chamber (5), and in which an outer circumference is smaller than an inner circumference of the spool (6); and an annular leaf spring (7) that is interposed between the spring supporting section (4g) and one end, of the spool (6), which is the end opposite the leaf valve side, and that biases the spool (6) in a direction so as to abut the leaf valve (3).
Inventors:
ABE TOMOYASU (JP)
KOBAYASHI YOSHIFUMI (JP)
MORI TOSHIHIRO (JP)
KOBAYASHI YOSHIFUMI (JP)
MORI TOSHIHIRO (JP)
Application Number:
PCT/JP2021/030034
Publication Date:
April 07, 2022
Filing Date:
August 17, 2021
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F16K17/02; F16F9/348; F16F9/46; F16K17/04
Domestic Patent References:
| WO2018155293A1 | 2018-08-30 |
Foreign References:
| JPH084818A | 1996-01-12 | |||
| JP2010151272A | 2010-07-08 | |||
| JP2010025186A | 2010-02-04 |
Attorney, Agent or Firm:
ISHIKAWA Ken (JP)
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