To improve a normally closed solenoid valve device provided with a damper chamber for reducing the vibration of the mover to minimize the entry of air into the damper chamber to thereby stabilize the damping performance of the damper chamber.
A cylinder 9 which has one end open and has an inner diameter smaller than the outer diameter of a barrel section 6a of a mover and a piston 10 which is displaced relative to a cylinder 9 by the movement of the mover 6 are provided to the valve housing 2 and the mover 6 of a normally closed solenoid valve in such a manner that cylinder 9 and the piston 10 correspond to the valve housing 2 and the mover 6. This forms a damper chamber 11 between the cylinder 9 and the piston 10 inserted in the opening of the cylinder 9. A restriction flow path 12 for allowing a working liquid within a valve chamber 4 to enter and exit from the damper chamber 11 is provided between the damper chamber 11 and the valve chamber 4.
SASAKI SHIN
KOBAYASHI KAZUYUKI
MIYAGI TAKAHIRO
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Higashio Masahiro
Takayoshi Tagawa