Title:
CONTROL VALVE
Document Type and Number:
Japanese Patent JP2019157949
Kind Code:
A
Abstract:
To improve responsiveness of a check valve.SOLUTION: A control valve 100 includes first and second pilot chambers 14, 15 facing both ends of a spool 12, a signal pressure passage 18 for guiding pilot pressures of the first and second pilot chambers 14, 15 as a signal pressure of the other apparatus, a communication groove 19 for communicating the first pilot chamber 14 to the signal pressure passage 18, a communication hole 20 for communicating the second pilot chamber 15 to the signal pressure passage 18, and a check valve 21 disposed in the communication hole 20. The check valve 21 further has a poppet valve 50 for opening and closing the communication hole 20, and a spacer 60 for restricting a moving amount to an opening direction, of the poppet valve 50, and further includes a movement restricting portion 80 for restricting the movement toward the poppet valve 50, of the spacer 60.SELECTED DRAWING: Figure 2
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Inventors:
KITANI TOSHIYUKI
Application Number:
JP2018043142A
Publication Date:
September 19, 2019
Filing Date:
March 09, 2018
Export Citation:
Assignee:
KYB CORP
International Classes:
F16K3/26; F15B11/00; F16K11/07; F16K15/06; F16K31/383
Domestic Patent References:
| JPH09159036A | 1997-06-17 |
Foreign References:
| WO2012124386A1 | 2012-09-20 |
Attorney, Agent or Firm:
Goto Patent Office