| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a solenoid valve device for a high-pressure fluid capable of being physically miniaturized while blocking or permitting flow of the high pressure fluid.SOLUTION: A movable core 30 reciprocating in a guide cylinder 20 has a small outer diameter portion 301, a large outer diameter portion 302 and a projecting portion 303. When a magnetic circuit is formed by power distribution to a coil 41, magnetic attraction force inclined with respect to a central axisφis generated between the guide cylinder 20 and the movable core 30, and the movable core 30 is attracted to a fixed core 35. The movable core 30 is brought into contact with an inner peripheral face of the guide cylinder 20 at a sliding portion 33 disposed on an outer periphery of the small diameter portion 301 and the projecting portion 303, and a clearance gap is formed between an outer peripheral face of the movable core 30 excluding the projecting portion 303, and an inner peripheral face of the guide cylinder 20. Thus, magnetic attraction force generated vertically to the central axisφis reduced, and frictional resistance with respect to the guide cylinder 20 of the movable core 30 is reduced. Therefore, a valve can be opened with small magnetic attraction force, so a coil assembly 40 can be miniaturized.</p> |
