Pushbutton switch

A pushbutton switch comprising:

• an insulating body molded of an insulating material and having a boxlike shape consisting of a pair of opposed side panels, a pair of opposed front and rear panels and a bottom panel, said insulating body having an opening at one end, and a pair of contact pieces to be electrically connected to and disconnected from each other being embedded in an inner bottom surface of said bottom panel of said insulating body;
• a rotary actuator rotatably held at one end in said insulating body at a position higher than said inner bottom surface and carrying at another end a push button projecting outwardly of said insulating body;
• a plate spring having a retaining contact piece engaged at one end with the another end of said rotary actuator and a movable contact piece for sliding at one end into or out of contact with said pair of fixed contact pieces on said inner bottom surface of said bottom panel of said insulating body, said retaining contact piece and said movable contact piece being coupled together at remaining ends thereof to form a V-letter shape, and said plate spring being disposed between said rotary actuator and said inner bottom surface of said bottom panel and resiliently biasing by reaction force from said inner bottom surface the another end portion of said rotary actuator in a direction in which to project out said push button from said opening of said insulating body;
• and
• a cover covering said opening of said insulating body but having a window through which said push button projects out of said insulating body.