| 摘要 |
PROBLEM TO BE SOLVED: To provide a structurally simple pushbutton switch which can perform on/off operations of a contact together with a clicking operation without flowing electric current through a spring material generating the clicking operation. SOLUTION: A pushbutton switch of the present invention includes a case 1 receiving a fixed contact and a moving contact; fixed contacts 3, 4 and 5 formed on the bottom of the case; a contact spring 14 having moving contacts 15, 16, 19 and 20, the contact spring serving to connect the fixed contact to each other in a pressed state while, in a non-pressed state, being self-restored to make electric circuits between the fixed contacts an off state; a click spring plate 23 formed from a resilient metallic thin film into a circle-curved plate shape, the click spring plate 23 being subjected to a clicking operation by pressing its top portion while being deformed so that it presses the underlying contact spring 13 having the moving contacts, thereby connecting the fixed contacts to each other using the moving contacts; a protrusion 10 being in contact with the moving contacts and the click spring plate during the deformation motion and serving to prevent the click spring from being deformed beyond its dead point; and an actuator serving to press the top point of the click spring 23.
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