Patent ID: 6756554
Filing Date: 2004-06-29
Classification: H01H

Abstract:
A tact switch comprising:an insulative housing having a bottom wall; a plurality of fixed contacts retained in the insulative housing, each fixed contact having a contact portion exposed on the bottom wall of the insulative housing; a top cover mounted onto a top surface of the housing and having an engaging plate projecting downwardly therefrom; a movable contact positioned between the fixed contacts and the top cover, the movable contact having a central portion and a declining portion bent downwardly from side edges of the central portion, the central portion having a substantially circular shape and defining a circular opening, a plurality of projecting tabs projecting inwardly and downwardly from a peripheral edge of the opening and extending into the opening; and an actuator having a press portion slideably mounted between the top cover and the movable contact; wherein when the actuator is pressed inwardly, the engaging plate drives the press portion downwardly to depress the movable contact, and the plurality of projecting tabs of the movable contact move downwardly to contact with the plurality of contact portions.