Patent ID: 6858812

Claim:
A push button switch in which a push button portion and a switch portion are housed in a case so as to open or close the switch portion by pushing in the push button portion, comprising: a lever-link mechanism having a pair of lever members which rock about a rocking fulcrum by interlocking with the push button portion when the push button portion is pushed in and are arranged so as to face each other, in which the both lever members are arranged relative to each other so that they can be folded and slid at their facing ends to face each other; and a switch operating member for opening or closing the switch portion when the lever link mechanism is rocked because the push button portion is pushed in, and wherein one of the lever members is fixed to one joint member at the facing end of one arm and the facing end of the other arm is slidably connected to the other joint, the other lever member is fixed to the other joint member at the facing end of the one arm and the facing end of the other arm is slidably connected to the one joint, and a lever folding point is formed on a straight line connecting the facing end of the other arm of the one lever member with the facing end of the other arm of the other lever member.