| 摘要 |
PROBLEM TO BE SOLVED: To provide a proposal for expanding selection of a thermosensitive materials capable of adjusting heat deformation temperature as operating temperature of a thermosensitive pellet type thermal fuse and capable of restraining troubles such as deformation and deterioration even though exposed at a severe environment; and to provide a thermal fuse with low costs, which can widen a range of choices of operating temperature, can improve insulation resistance after it is operated, can accelerate response speed at the time of its operation and can enhance strength of a thermosensitive pellet. SOLUTION: In the thermosensitive pellet type thermal fuse, thermosensitive pellet 3 using a thermoplastic resin being a polymer material as a thermosensitive material is airtightly sealed by storing in a metal case 1 of an outer envelope together with a strong compression spring 6 and a weak compression spring 8 of a spring member while its heat deformation temperature is adjusted by a temperature setting means. COPYRIGHT: (C)2009,JPO&INPIT
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