Title:
CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2023/238560
Kind Code:
A1
Abstract:
A control valve (101) comprises a solenoid proportional valve-equipped cap (100) that has a pilot cap (10) including: a primary pressure passage (41) that guides a working fluid at a primary pressure to the solenoid proportional valve; a secondary pressure passage that guides the working fluid, which has been pressure-reduced to a secondary pressure by the solenoid proportional valve, to a pilot chamber; and a drain passage that discharges the working fluid discharged from the solenoid proportional valve (50). A valve housing (102) of the control valve (101) has: a primary pressure confluence passage (30) that establishes mutual communication with the primary pressure passage (41) in the cap (100) fitted with solenoid proportional valve; and a drain confluence passage that establishes mutual communication with the drain passage in the cap (100) fitted with solenoid proportional valve. The primary pressure confluence passage (30) supplies hydraulic fluid of a pump through a supply port (21) provided to the valve housing (102). A discharge port, which is provided to the valve housing (102) and which communicates with a tank, communicates with the drain passage.
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Inventors:
SHIBUYA KOSUKE (JP)
Application Number:
PCT/JP2023/017160
Publication Date:
December 14, 2023
Filing Date:
May 02, 2023
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F15B11/00; F16K27/00; F16K11/07; F16K27/04; F16K31/42
Foreign References:
| JP2021092227A | 2021-06-17 | |||
| JP2020133692A | 2020-08-31 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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