Patent ID: 7659805

Claim:
A thermostat having a fixed contact on an insulating plate and a movable plate with a moving contact at a position that faces the fixed contact, and making/breaking an external electrical circuit connected to the fixed contact and the moving contact by driving the movable plate with a bimetal that counter turns at a prescribed temperature, wherein the movable plate comprises: a spring unit for pressing the moving contact on the fixed contact with a prescribed contact force; a securing plate connected in series with the spring unit; the movable plate being formed into a U-shape by bending a root portion connected in series between the spring unit and the securing plate; a securing unit for placing the bimetal between the spring unit and the securing plate, the securing unit forming a securing point provided on the securing plate connected in series with the spring unit for securing the movable plate on the insulating plate; a supporting unit that is formed into a pin-shape by being bent about a fold point of the securing plate at a right angle, supports the bimetal by inserting the pin-shaped supporting unit through a hole provided in the center of the bimetal, and is formed so that the distal end of the pin-shaped supporting unit protrudes outward from the hole provided on the bimetal when the moving contact is in contact with the fixed contact; a blade point that is part of the spring unit, the blade point for pressing the bimetal onto the surface of the insulating plate; and a terminal unit for connecting the external electrical circuit, and wherein the movable plate is comprised by a single plate.