A push-button switch having an interlocking device.

摘要

An interlocking device for a push-button switch comprises a locking lever 13 which is pivotally disposed in a slot 10 extending between two push-buttons. The two end portions of the lever are engaged in recesses in the respective push-buttons and a projection 13a which acts as a fulcrum is formed at the centre of the underside of the lever 13. A pin 12 which engages the projection or fulcrum of the lever is rotatably fitted in journal grooves and extends transversely of the slot. When either of the two push-buttons is depressed, the lever pivots into an inclined position and locks the other push-button against being pressed downward.