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    • 12. 发明授权
    • Protective device
    • 保护装置
    • US5712610A
    • 1998-01-27
    • US562685
    • 1995-11-27
    • Motohide TakeichiNorikazu IwasakiYuji Furuuchi
    • Motohide TakeichiNorikazu IwasakiYuji Furuuchi
    • H01H85/046H01H85/048H01H85/04
    • H01H85/048H01H85/046H01H2085/466Y10T29/49107
    • To obtain a protective device that can prevent overvoltage and at the same time has an excellent safety and also to make chip type protective devices smaller in size, this invention provides a protective device comprising a substrate, a heating element provided on the substrate, an insulating layer that covers the surface of the heating element, and a low-melting metal piece provided on the insulating layer. Particularly preferably the substrate and the heating element are each formed of an inorganic material. This protective device may be used in combination with a voltage detecting means making use of a zener diode, in such a way that the heating element of the protective device is electrically excited to generate heat when the voltage detecting means detects a voltage exceeding the rated voltage, whereby an overvoltage protector can be set up.
    • 为了获得可以防止过电压的保护装置,并且同时具有良好的安全性并且还使芯片型保护装置的尺寸更小,本发明提供一种保护装置,其包括基板,设置在基板上的加热元件,绝缘体 覆盖加热元件表面的层,以及设置在绝缘层上的低熔点金属片。 特别优选基板和加热元件由无机材料形成。 该保护装置可以与使用齐纳二极管的电压检测装置组合使用,使得当电压检测装置检测到超过额定电压的电压时,保护装置的加热元件被电激励以产生热量 ,由此可以设置过电压保护器。