Patent ID: 6722627
Filing Date: 2004-04-20
Classification: F16K,H01F,Y10T

Abstract:
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 portion 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.