Abstract: A support plate having a top end edge defining a central convex portion which is the highest in the center thereof is vertically secured in the case to the bottom panel of the case, and a movable contact blade is supported on the top end edge of the support plate for rotating movement. Attached to the movable contact blade at one end thereof are two movable contacts spaced apart in the direction of the pivot axis of the blade. Two fixed contact blades are disposed on the bottom panel and each has a fixed contact attached thereto in opposition to a corresponding one of the movable contacts with the end portion of each fixed contact blade extending out through the bottom panel to define a terminal.

Abstract: In a tact switch in which pressing operation on an operating portion of an actuator member will cause the forward end portion of the actuator member to be pushed toward the bottom surface of a housing while being guided by an inclined surface so that the forward end portion (flexible portion) of the actuator member is flexed to press down on the marginal regions of a movable contact piece whereby the curved section of the movable contact piece is flipped over, a cam defining the inclined surface is provided separately from the housing. The movable contact piece, the actuator member, the cam and a top lid may be assembled together simply by stacking them sequentially from above onto the housing.

Abstract: A pushbutton switch is formed by: an insulating body molded of an insulating material and into a box-like shape having an opening at on end, a pair of fixed contact pieces to be electrically connected to and disconnected from each other being embedded in the inner bottom surface of the box-shaped insulating body; a rotary actuator rotatably supported at one end in the insulating body and formed at the other end as a unitary structure with a push button which projects out of the insulating body; and a plate spring formed by a retaining contact piece engaged at one end with the free end of the rotary actuator and a movable contact piece sliding at one end on the inner bottom surface and coupled at the other end with the retaining contact piece in such a manner as to define a V-letter shape between them, the plate spring resiliently biasing by the reaction force from the inner bottom surface of the insulating body the push button in the direction in which it projects out through the opening of the insulating bod