Switch with double snap action for operation of electrical equipment, has plastic support which is provided under silicone mat, and actuating keys are arranged under printed circuit board, by which movement of bubbles is pressurized

摘要

The switch has a push rods (73,74) whose pressure is acted upon at a position that is not equidistant from the starting points of the effect of silicone bubbles (81,82) on the platelets (71,72), so that the linear movement of pressed-down pressure rods is converted into rotary sliding movement of platelets. A plastic support (9) with through holes (91) is provided underneath the silicone mat (8), in accordance with the overlying bubble pairs, and actuating keys (62) is arranged underneath the printed circuit board (6), by which the movement of the bubbles is pressurized.