Title:
SPOOL VALVE
Document Type and Number:
WIPO Patent Application WO/2021/060146
Kind Code:
A1
Abstract:
The present invention provides a spool valve that allows smooth control of a spool regardless of whether the fluid pressure is high or low. The spool valve has: a spool (23) that is disposed inside a sleeve (21) so as to be longitudinally movable; a first port (24) through which fluid is supplied from a fluid supply hole (8b) of a housing (8); and a second port (25) through which the fluid is discharged to the outside. A supply groove (4) is formed on the outer circumference of the sleeve (21). The supply groove (4) is formed from: an inflow space (T) into which the fluid flows from the fluid supply hole (8b); and an outflow space (R) that, in the axial direction, is formed to the first port (24) side of the inflow space (T).
Inventors:
NISHIMURA NAOKI (JP)
KAWATO TADANOBU (JP)
HOSHI MASAKI (JP)
KAWATO TADANOBU (JP)
HOSHI MASAKI (JP)
Application Number:
PCT/JP2020/035283
Publication Date:
April 01, 2021
Filing Date:
September 17, 2020
Export Citation:
Assignee:
EAGLE IND CO LTD (JP)
International Classes:
F16K3/24; F16K47/08
Foreign References:
| JP2012522201A | 2012-09-20 | |||
| JP2018013184A | 2018-01-25 | |||
| JP2011017381A | 2011-01-27 | |||
| JP2015102150A | 2015-06-04 | |||
| JP2009236310A | 2009-10-15 |
Other References:
See also references of EP 4036444A4
Attorney, Agent or Firm:
SHIGENOBU Kazuo et al. (JP)
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