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    • 1. 发明授权
    • Delayed-fusion fuse
    • 延时融合保险丝
    • US5546066A
    • 1996-08-13
    • US296582
    • 1994-08-25
    • Hiroki KondoMitsuhiko TotsukaToshiharu KudoHisashi Hanazaki
    • Hiroki KondoMitsuhiko TotsukaToshiharu KudoHisashi Hanazaki
    • H01H85/08H01H85/0445H01H85/06H01H85/11H01H85/04H01H69/02H01H71/20
    • H01H85/11Y10T29/49107
    • The present invention provides a delayed-fusion fuse by which its predetermined durability can be reliably ensured, and its stable pre-arcing time-current characteristics can be obtained, even when a current exceeding the steady-state current such as a motor lock current frequently flows in the fuse. The delayed-fusion fuse includes a pair of electric connecting sections formed on both sides of a fusible section having a narrow fusing portion made of an electrically conductive metal. Also, the delayed-fusion fuse includes a metallic chip made of low fusing point metal for absorbing heat generated in the fusible section, and a covering and adhering section for holding the metallic chip on the fusible section. A thin metallic layer forms a solid solution with the low fusing point metal, where the solid solution requires an energy of formation which is higher than that of the formation of a solid solution made of the electrically conductive metal and the low fusing point metal. This thin metallic layer is interposed between a surface of the covering and adhering section and a surface of the low fusing point metallic chip. Specifically, the thin metallic layer is provided on a surface of the fusible section in the form of a plating layer.
    • 本发明提供一种可以可靠地确保其预定的耐久性的延迟熔断保险丝,并且即使当电流超过诸如马达锁定电流的稳态电流的电流频繁地时,也可以获得其稳定的预电弧时间 - 电流特性 保险丝流入。 延迟融合保险丝包括形成在具有由导电金属制成的窄熔点部分的可熔部分的两侧上的一对电连接部分。 此外,延迟熔断保险丝包括用于吸收在可熔部分中产生的热的低熔点金属制成的金属片,以及用于将金属片保持在可熔部上的覆盖和粘附部。 薄金属层与低熔点金属形成固溶体,其中固溶体需要比由导电金属和低熔点金属形成的固溶体形成的能量。 该薄金属层插入在覆盖层的表面和粘接部之间以及低熔点金属芯片的表面之间。 具体地,薄金属层以镀层的形式设置在可熔部的表面上。