Patent ID: 6674033
Filing Date: 2004-01-06
Classification: H01H

Abstract:
A press button type safety switch comprising:a housing, said housing having a top opening; spring means mounted inside said housing; at least two terminals mounted in said housing for connecting to a power source; a switching mechanism; a press button mounted in the top opening of said housing and supported on said spring means for pressing by hand; and an actuating structure controlled by said press button to switch said switching mechanism between on and off positions; wherein: said actuating structure including two sliding tracks respectively formed of a plurality of sliding rails and arranged in parallel, and a push member pivoted to said press button at a bottom side and forming with said press button a linkage, said push member comprising two bottom push portions respectively supported on said switching mechanism for synchronous movement with said push member to move said switching mechanism between said on and off positions, two guide rods extended from two opposite lateral sides thereof and respectively slidably coupled to said sliding tracks for guiding movement of said push member to switch said switching mechanism between said on and off positions, and a stop device provided on an inside above said bottom push portions; said switching mechanism including a plank disposed in contact with said bottom push portions of said push member for switching said at least two terminals between said on and off positions, an overcurrent protective conducting plate for automatically tripping off the circuit of said terminals upon an overcurrent, and a stop device upwardly extended from said plank for hooking up with the stop device of said push member when said switching mechanism is switched on, said plank being linked to said overcurrent protective conducting plate and forcible by said overcurrent protective conducting plate to change a tilting angle and to disengage said stop device from the stop device of said push member for enabling said press button to be pushed upwards by said spring means when said overcurrent protective conducting plate is tripped off upon an overcurrent.