| 摘要 |
PROBLEM TO BE SOLVED: To comprise an electromagnetic valve mechanism in a gas supply system in a gas torch or a plasma torch. SOLUTION: The torch A is intended for a target machining by jetting a supplied gas from the tip end to a workpiece and is provided with the electromagnetic valve mechanism B including: a gas connecting part 3 installed in the torch body 1; a base 11 which has a vertically piercing gas through hole 11b and which has on one side a screw part 11c formed connectable to the gas connecting part 3 and on the other side a nozzle 17 formed; a core 12 which has a passage 16 attached to a nozzle 17 side and pierced along an axis 12d coinciding with the axis 11a and which has a screw part 12f formed for connecting a terminal 22; a plunger 13 which is arranged so as to make it slidable in the passage 16; a spring 14 pressing the plunger 13 in a manner shielding the nozzle 17; and a coil 15 which is fitted in the core 12 and which drives the plunger 13 to separate from the nozzle 17. COPYRIGHT: (C)2007,JPO&INPIT
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