Title:
CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2019/053783
Kind Code:
A1
Abstract:
A lock valve 50 comprising a poppet valve body 52 which is disposed within a spring chamber 61, a spring 53 which biases the poppet valve body 52 leftward, and a valve seat 51 which comes into contact with the poppet valve body 52 is disposed in a cavity formed in a valve body 30 to mount a relief valve 41 therein and is positioned further inward than the sleeve 44 of the relief valve 41. The outer peripheral portion of the poppet valve body 52 has hole portions 55 formed therein at regular intervals. The outer peripheral portion of the valve seat 51, too, has hole portions 54 formed therein at regular intervals. The valve portion of a solenoid valve is disposed between a passage 62 which is in communication with the spring chamber 61 and a passage 64 which is in communication with a second flow passage open to a low-pressure region such as a hydraulic tank.
Inventors:
KAKIO MASAFUMI (JP)
Application Number:
PCT/JP2017/032879
Publication Date:
March 21, 2019
Filing Date:
September 12, 2017
Export Citation:
Assignee:
SHIMADZU CORP (JP)
International Classes:
F15B11/00; B66F9/18; B66F9/22
Foreign References:
| JP2008303909A | 2008-12-18 | |||
| JP2526813Y2 | 1997-02-26 |
Attorney, Agent or Firm:
OTSUBO Takashi (JP)
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