| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermosensitive operation element capable of cutting off a circuit in response to a temperature rise and an excessive current. SOLUTION: A bimetal 8 is installed in a space formed between a fixed electrode 2 and a movable electrode 3 brought into contact with the fixed electrode 2 through a contact 3a formed at one end. When the bimetal 8 is deformed by temperature rise, the movable electrode 3 is pressed up to separate the contact 3a from the fixed electrode 2. When this thermosensitive operation element 1 is installed with the movable electrode 3 and the fixed electrode 2 serially connected to a circuit, the circuit can be cut off when temperature rises. When an excessive current flows through the circuit, the movable electrode 3 generates heat by its electric resistance and the heat is transmitted to the bimetal 8, whereby the movable electrode 3 is separated from the fixed electrode 2 by its contact 3a by deformation of the bimetal 8, so that the excessive current flowing through the circuit is cut off. COPYRIGHT: (C)2005,JPO&NCIPI
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