| 摘要 |
PROBLEM TO BE SOLVED: To eliminate deformations and diagonal insertion of a hinged spring in assembling a movable iron piece and generation of resin wastes due to burrs by forming a bent part guided to a guide part in the side edge of the hinged spring provided in the movable iron piece. SOLUTION: The center of a rectangular sheet spring is cut into an approximately H-shape by press working, one end of a hinged spring 36 folded into an L-shape is calked to a movable iron piece 30, the other end has a lock claw 37 cut and raised therefrom, and a bent part 36a with a curved face is formed so as to position burrs generated in press working in the inside. In assembling, the bend part 36a is inserted in a guide groove part formed in the base, and its side face is brought in contact with the outside inner face of the groove, to position the hinged spring 36 and the movable iron piece in the width direction. Then, since the burrs are positioned inside and are be prevented from contacting with the groove and eliminate resin waste from being generated from the base, and the bent part 36 is provided with strength and elasticity to stabilize the positioning state.
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