Patent ID: 7547858

Claim:
A push button switch comprising: a housing formed by a base in which a fixed contact is disposed on a bottom face of the base and a cover assembled to the base; an operating member slidably inserted in the housing parallel to the bottom face of the base; a guiding part formed on the cover, extending obliquely inwards from a ceiling face of the cover at an edge of a through hole formed in the ceiling face of the cover, wherein a tip of an operating piece of the operating member slides is operable to slide along the guiding part; a movable contact disposed in the housing and operable to be pressed against the fixed contact, thereby opening a circuit; and a reinforcing part extending obliciuely inwards from the ceiling face of the cover at the edge of the through hole, wherein the guiding part and the reinforcing part are contiguous wherein the movable contact has a circular thin dome shape.