| 摘要 |
PROBLEM TO BE SOLVED: To enable reduction of the part cost of a slide cam and a restoring spring therefor and facilitation of assembling in a push button switch used for a piano handle type switch.SOLUTION: A slide cam 33 is positioned between a push button handle 34 and a spring piece 35 in a height direction (Z direction). The spring piece 35 is fixed to the push button handle 34 under the above state, whereby the slide cam 33, the spring piece 35 and the push button handle 34 are integrated with one another. The slide cam 33 has slant portions 33b at both end portions thereof in a longitudinal direction (X direction), the slant portions 33b abutting against reversing handles. The spring piece 35 has a rectangular opening 35a which is long in the longitudinal direction and through which the slant portions 33b of the slide cam 33 protrude to the reversing handle side. Second restoring springs 40 fold, in the height direction, both the end portions 35b in the width direction (Y direction) of the spring piece 35. The second restoring springs 40 are two leaf springs which are bent in parallel to each other so as to form a predetermined angle with respect to the width direction, and press both side surfaces 33c in the longitudinal direction of the slide cam 33.SELECTED DRAWING: Figure 2 |
