| 摘要 |
PROBLEM TO BE SOLVED: To provide an assembly structure for an instantaneous device that facilitates assembly and can reduce manufacturing cost by reducing the number of components. SOLUTION: A protrusion 6 having a generally oval-shaped cross section that is to be an axis of rotation support is formed in one of a fixed yoke 3 and a movable electromagnetic piece at a position inside both side surfaces of the fixed yoke 3 or outside both side surfaces of the movable electromagnetic piece, while a cut-out part 5 to be a bearing of the protrusion 6 is formed in the other of the fixed yoke 3 and the electromagnetic piece at a position corresponding to the protrusion 6, the cut-out part 5 comprising a circular part 9 having a diameter slightly greater than a major axis 7 of the protrusion 6 and an insertion part 10 having a width smaller than the major axis 7 of the protrusion 6 but greater than a minor axis 8 of the protrusion 6. In addition, an elastic arm 11 is provided to extend on both sides or one side of one of the fixed yoke 3 and the movable electromagnetic piece, while a positioning protrusion 12 is formed in the other of the fixed yoke 3 and the movable electromagnetic piece at a position corresponding to the elastic arm 11. COPYRIGHT: (C)2008,JPO&INPIT
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