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Title:
NORMALLY-OPEN SOLENOID VALVE
Document Type and Number:
Japanese Patent JP2011064267
Kind Code:
A
Abstract:

To provide a solenoid valve restrained in size increase while restrained in the oscillation of a plunger.

The plunger 4 is a non-magnetic body formed of resin, and one end side of the plunger 4 is connected to an armature 3. The other end side of the plunger 4 is formed with a spring receiving part 4a to which the end of a coil spring 11 is mounted. The plunger 4 is formed to be tapered from the spring receiving part 4a toward the other end side, and the tip is formed with a valve element 4b abutting on the seat 5a of a valve seat 5. The valve element 4b is formed into a substantially hemispherical shape. A pressure receiving part 4c is formed between the valve element 4b and the spring receiving part 4a. The plunger 4 is formed through injection-molding of resin using a molding die whose parting line is formed in the position of the pressure receiving part 4c.


Inventors:
YOSHIDA KEIGO
SAIDA NORIHIRO
DOI SATOSHI
YOKOTA TADAHARU
Application Number:
JP2009215628A
Publication Date:
March 31, 2011
Filing Date:
September 17, 2009
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
F16K31/06; B60T15/36
Domestic Patent References:
JPH08230636A1996-09-10
JPH08230636A1996-09-10
JP2004255615A2004-09-16
JPH11500678A1999-01-19
JP2000517263A2000-12-26
Foreign References:
US6679567B12004-01-20
Attorney, Agent or Firm:
Masamichi Ayata



 
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