| 摘要 |
PROBLEM TO BE SOLVED: To provide a push-button switch alleviating lifting force by an adhesive sheet acting on an erecting part of a movable contact at pressing of that contact. SOLUTION: The push-button switch is provided with: a movable contact 4 conducting electricity into a peripheral fixed contact 3 all the time and selectively conducting it into a center fixed contact 2, and an adhesive sheet 5 to make the movable contact 4 retained in a housing 1. The movable contact 4 includes an invertible expansion part 4a, and an erecting part 4b formed on a peripheral edge of the expansion part 4a, and also is provided with a cutting part 5b1 penetrating the adhesive sheet 5 at a position corresponding to the movable contact 4 of the adhesive sheet 5. The cutting part 5b1 is formed, for example, of an edge part placed at a peripheral edge part 5d1 side of the adhesive sheet 5 of an arc-shaped long hole 5b. The adhesive sheet 5 includes a coupling part 5i for coupling a pressing part 5d with pressing force granted and a peripheral edge part 5d1 of the adhesive sheet 5. COPYRIGHT: (C)2009,JPO&INPIT
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