Patent ID: 6689977
Filing Date: 2004-02-10
Classification: H01H

Abstract:
A keyswitch comprising:a pair of lever members which are rotatably linked at a portion where the lever members cross each other; a keytop supported by the pair of lever members so as to be movable upward and downward; an elastic member for elastically biasing the keytop upward; and a switch element which is subjectable to a switching operation with the upward and downward movement of the keytop; wherein an actuator is engaged by a top end of each of the pair of lever members; wherein the keytop is held by the actuator; wherein the elastic member directly elastically biases the keytop; wherein, with the upward and downward movement of the keytop, the pair of lever members are movable upward and downward through the actuator; wherein a prismatic protrusion is formed at a portion of the keytop that is stopped by the actuator, and side surfaces formed at a periphery of the prismatic protrusion are formed flat; and wherein the actuator has a dislodging preventing stopper portion capable of preventing the actuator from becoming dislodged by being press-contacted to the side surfaces at the periphery of the protrusion, a plurality of press-contact portions supported in a cantilever manner being provided at the dislodging-preventing stopper portion, and the press-contact portions being press-contacted to the corresponding side surfaces at the protrusion in order to stop the keytop by the actuator.