Title:
CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2020/090587
Kind Code:
A1
Abstract:
This control valve (100) is provided with: a receiving hole (1A) that is formed in a housing (1) and open in an end surface of the housing (1); a spool (10) slidably inserted into the receiving hole (1A); a cap (30) that seals the opening of the receiving hole (1A); a spring (35) that biases the spool (10) in one direction; a switching part (40) that is provided to the cap (30) and moves the spool (10) against a biasing force of the spring (35) by a manual operation; a pilot pressure chamber (50) which is formed inside the cap (30) and to which a pilot pressure that biases the spool (10) against the biasing force of the spring (35) is induced; a drain passage (70) for releasing the pressure inside the pilot pressure chamber (50); and a throttle passage (72) that is provided to the drain passage (70) and imparts resistance to the flow of a working oil passing therethrough.
Inventors:
OGAYA YOSHIKAZU (JP)
Application Number:
PCT/JP2019/041544
Publication Date:
May 07, 2020
Filing Date:
October 23, 2019
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F16K31/14; F15B11/08; F16K3/26
Domestic Patent References:
| WO2016047322A1 | 2016-03-31 |
Foreign References:
| JPS6256602A | 1987-03-12 | |||
| JPS60219198A | 1985-11-01 | |||
| US20160130787A1 | 2016-05-12 | |||
| JPS5925753U | 1984-02-17 | |||
| JPS57107484A | 1982-07-03 | |||
| JPS5374732U | 1978-06-22 | |||
| JP2013190075A | 2013-09-26 | |||
| JPH1172171A | 1999-03-16 | |||
| JPS52130131U | 1977-10-03 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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