| 摘要 |
PURPOSE: A repetitive type fuse is provided to reduce manufacturing time and manufacturing costs by producing optimum design measurement regarding a shaped memory alloy spring and a bias spring. CONSTITUTION: A repetitive type fuse comprises a shaped memory alloy spring(510) and a bias spring(520). The diameter of a wire of the shaped memory alloy spring is 0.15mm to 0.50mm. The number of turning of the wire of the shaped memory alloy spring is 3.5 to 7.0. The external diameter of the shaped memory alloy spring is 7.0-8.5times the size the diameter of the wire of the shaped memory alloy spring. The average pitch spacing of the shaped memory alloy spring is 1.0mm to 1.5mm. The diameter of a wire of the bias spring is 60-65% of the diameter of the wire of the shaped memory alloy spring.
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