Title:
SELECTOR VALVE, ELECTRO-HYDRAULIC CIRCUIT AND AIRCRAFT
Document Type and Number:
WIPO Patent Application WO/2021/149416
Kind Code:
A1
Abstract:
Provided are a selector valve, an electro-hydraulic circuit and an aircraft that are lightweight and capable of suppressing an overload. A selector valve 30, an electro-hydraulic circuit 1 and an aircraft comprise a sleeve 32, which is provided with a plurality of ports, a spool 34, which is provided inside the sleeve 32 and moved in an axial direction AD by a pilot hydraulic pressure, and switches a switching oil passage that is a flow passage 30a of hydraulic oil, the flow passage 30a being formed by connecting the plurality of ports, a first biasing means 36, which biases the spool 34 against the pilot hydraulic pressure, a relief hole 34d, which is formed in the spool 34 and discharges the hydraulic oil, the hydraulic oil producing the pilot hydraulic pressure, a valve body 42, which closes the relief hole 34d, and a second biasing means 44, which biases the valve body 42 to the relief hole 34d of the spool 34 against the pilot hydraulic pressure and opens the relief hole 34d when the pilot hydraulic pressure exceeds a predetermined value.
Inventors:
TAKEUCHI MOTOYASU (JP)
ABE TOSHINORI (JP)
SUZUKI KAZUYUKI (JP)
NIWA HIDEKI (JP)
ABE TOSHINORI (JP)
SUZUKI KAZUYUKI (JP)
NIWA HIDEKI (JP)
Application Number:
PCT/JP2020/047103
Publication Date:
July 29, 2021
Filing Date:
December 17, 2020
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
NABTESCO CORP (JP)
NABTESCO CORP (JP)
International Classes:
B64C13/40; F15B11/08; F16K11/07; F16K31/122
Foreign References:
| JP2019143719A | 2019-08-29 | |||
| JP2019007515A | 2019-01-17 | |||
| JP2007046790A | 2007-02-22 | |||
| JP2007046790A | 2007-02-22 |
Other References:
See also references of EP 4079633A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Download PDF: