Patent ID: 8008593
Filing Date: 2011-08-30
Classification: H01H

Abstract:
1. A switch pushed down so as to conduct a fixed contact formed on a circuit board comprising: a key top to be pushed down; an operation knob pushed down by the key top to rotate around a pivot point, having a working portion; and a contact rubber switch pushed down by the working portion of the operation knob, wherein the rubber switch is provided with a push-button portion having an upper surface pushed down by the working portion of the operation knob and an under surface formed with a movable contact; and a skirt portion extending obliquely downward from an edge of the push-button portion, in which the skirt portion has a thinner portion on the side of the pivot point of the operation knob and a thicker portion on the opposite side of the pivot point of the operation knob and the push-button portion has an upper surface inclined upward toward the side of the pivot point of the operation knob, wherein the working portion of the operation knob contacts the edge of the push-button portion of the rubber switch, on the side of the pivot point of the operation knob, to deform the skirt portion on the side of the pivot point at the initial step of the push down operation, and then the working portion contacts the edge of the push-button portion of the rubber switch, on the opposite side of the pivot point, to be pushed down and to deform the skirt portion on the opposite side of the pivot point.