Patent ID: 6717085
Filing Date: 2004-04-06
Classification: H01H

Abstract:
A press-button switch comprising:a housing formed in a hollow body and open at one side thereof, the open side of said housing being covered by a side plate, an opening being disposed at a top of said housing so that a press button is fitted thereinto, and resilient elements being provided for restoring said press button back to an original position; connecting terminals fitted into said housing and arranged at a bottom thereof, a switching element being provided to perform an on-off control of said connecting terminals, a control unit installed within said housing and controlled by said press button to perform an on-off control of the switch by means of said switching element, wherein an improvement is characterized by: said control unit having a rotary body and a push-pull rod; said rotary body having a rotary shaft fitted into a through hole at an inner side of said housing so that said rotary body is located within said housing in rotatable state, said rotary body further having a first actuating element and a second actuating element both of which intersects in a cross shape, said second actuating element being interposed between said rotary body and said first actuating element, and said rotary body having an eccentric hole at an outside face thereof; said push-pull rod having a top arm and a bottom member, said top arm being rotatably arranged in said eccentric hole of said rotary body while said bottom member is formed in U-shape and a front projection of said switching element is connected to an indentation of the bottom member; said first and second actuating elements being controlled by a push element and a hook member both of which are coupled with said press button; said push element disposed at a top of said first actuating element so that, when said press button is pressed downward, said first actuating element is pushed to turn the rotary body; said hook member arranged to the side of said second actuating element so that, when said press button is raised back to the original position, said second actuating element will be pulled to enable said rotary body to continuously rotate in a turning direction driven by said first actuating element; and said rotary body rotating approximately at an angle of 180 degrees in pressing said press button once so that said eccentric hole moves said push-pull rod upwards or downwards in order for said switching element to perform the on-off control.