Title:
SOLENOID VALVE
Document Type and Number:
WIPO Patent Application WO/2019/221171
Kind Code:
A1
Abstract:
A spool (501) is contained in a containing member (301) so as to be slidable on the inner peripheral surface (45) of the containing member (301). The spool (501) has formed on the outer peripheral surfaces of the lands (54, 56) thereof: a first continuous displacement section (543) having a clearance relative to the inner peripheral surface (45) of the containing member (301), the clearance continuously decreasing from a supply port (35) on the high-pressure side toward an output port (33) on the low-pressure side; and a second continuous displacement section (563) having a clearance relative to the inner peripheral surface (45) of the containing member (301), the clearance continuously decreasing from the supply port (35) on the high-pressure side toward a feedback port (37) on the low-pressure side. A small annular groove (65) is formed between a first small-diameter end (542) which is the supply port (35)-side end of the first continuous displacement section (543) and a second small-diameter end (562) which is the supply port (35)-side end of the second continuous displacement section (563), the diameter of the bottom of the small annular groove (65) being smaller than the outer diameters of the first and second small-diameter ends (542, 562).
Inventors:
WATANABE MASAMICHI (JP)
Application Number:
PCT/JP2019/019278
Publication Date:
November 21, 2019
Filing Date:
May 15, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F16K31/06; F16K3/314
Foreign References:
| JPS53125360U | 1978-10-05 | |||
| JPS5590856U | 1980-06-23 | |||
| JP2006194351A | 2006-07-27 | |||
| JP2006038109A | 2006-02-09 |
Attorney, Agent or Firm:
HATTORI Masaki (JP)
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