Push button switch with override interruption structure

A push button switch with override interruption switch, comprising:

• a switch box;
• a push button disposed at upper end of the switch box, a bottom of the push button being disposed with a pressing projection, whereby the push button can be depressed or moved upward to close or open a circuit;
• a front cover disposed at front end of the switch box;
• a base disposed at the bottom of the switch box and formed with a receptacle and multiple insertion channels for respectively inserting therein two conducting plates and a second conducting board;
• a support rod having an upper end abutting against a lower end of the pressing projection of the push button and having a lower end fitted in the receptacle of the base, a restoring spring being disposed under the support rod for upward pushing the support rod;
• an electric contact;
• a second conducting board disposed with a second contact point;
• and
• an override interruption switch, said push button being characterized in that an override interruption structure is disposed with a first conducting board having a first contact point, one end of a bimetal blade being connected with the first conducting board, the other end of the bimetal blade being able to form a circuit together with the conducting plate inserted on the base, the override interruption switch being further disposed with a shaft seat and a power cutting member, whereby when the push button is depressed to close the circuit, the shaft seat is engaged with the power cutting member which is downward moved along with the push button, in the case of override, the bimetal blade being thermally deformed to act on the shaft seat so as to disengage from the power cutting member, whereby the power cutting member and the push button and electric contact are upward restored into a power cut state.