Patent ID: 7034650

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 member 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 pivotable member which is pivotably connected to the connection member of the switch member, two rods extending from a first side of the pivotable member and a tongue pivotably connected to the pivotable member and located above the two rods, the second end of the bimetallic plate located between the tongue and the two rods; wherein the second end of the bimetallic plate is lifted by the two rods to set the switch device to “OFF” position when the switch member is pressed on an “OFF” side, the second end of the bimetallic plate is pushed downward by the tongue to set the switch device to “ON” position and the pivotable member is pivoted an angle to move the tongue away from the second end of the bimetallic plate when the switch member is pressed on an “ON” side, and the second end of the bimetallic plate can be deformed upward without being stopped by the tongue when the switch device is in “ON” position and overloaded.