Patent ID: 7030726

Claim:
A switch device comprising: a case having an open top and a switch member pivotably engaged with the open top of the case, a connection port connected to the switch member; a first terminal and a second terminal respectively extending through a bottom of the case, a bimetallic plate having a first end fixed to the first terminal and a first contact point connected to a second end of the bimetallic plate, a second contact point connected to the second terminal and located beneath the first contact point; and a protection mechanism including a pull member which has a first rod at an upper end thereof pivotably connected to a hole in the connection port of the switch member, the second end of the bimetallic plate located above a lower hook end of the pull member, a push member located above the bimetallic plate and pivotably connected to the pull member, the push member being in contact with the second end of the bimetallic plate at an angle when the switch member is pivoted to “ON” status; wherein the push member has a ring located at a top end thereof, and a second rod of the pull member is inserted through a hole of the ring of the push member.