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Electromagnetic valve device and manufacturing method thereof

  • US 20030116739A1
  • Filed: 12/12/2002
  • Published: 06/26/2003
  • Est. Priority Date: 12/13/2001
  • Status: Active Grant
First Claim
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1. An electromagnetic valve device, comprising:

  • a moving member;

    a valve member reciprocating together with said moving member, for controlling a flow rate of a fluid passing through a fluid path;

    an energizing means for energizing said moving member in a first reciprocating direction;

    a coil portion for generating a magnetic force to attract said moving member in a second reciprocating direction;

    a stator for forming a magnetic circuit with said moving member, the stator having a tube portion covering an outer periphery of said moving member and a suction portion forming a gap between said tube portion and itself in the first and second reciprocating directions of said moving member, the suction member attracting said moving member in the second reciprocating direction; and

    a non-magnetic member provided at an inner circumference of said tube portion, for movably supporting said moving member in a reciprocating manner, the non-magnetic member covering an end of said moving member in one of the reciprocating directions, the non-magnetic member extending to said suction portion to cover an outer periphery of said suction portion, wherein said moving member has a hard portion with a hardness close to a hardness of said non-magnetic member at a sliding part against said non-magnetic member.

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