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Piezo-resistance with metal type temperature fuse wire

A technology of thermal fuse and varistor, applied in varistor, overvoltage protection resistor, etc., can solve the problems of easy failure, weak ability to withstand large current impact, slow response speed of thermal insurance, etc., to achieve a wide range of applications , Easy to install, fast thermal response

Inactive Publication Date: 2006-08-02
徐忠厚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Existing varistors with over-temperature protection are either complex in structure, such as traditional modular thermal tripping devices and Chinese Patent No.02222055.0 devices; or the response speed of the temperature insurance as an over-temperature protection structure is too slow or it can withstand large currents The impact ability is weak and easy to fail, such as the external alloy type thermal fuse and the Chinese patent No.00237913.9 device, the traditional shrapnel type thermal tripping device, the external organic type thermal fuse; etc.

Method used

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  • Piezo-resistance with metal type temperature fuse wire

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Embodiment Construction

[0010] As shown in Figure 1 and Figure 2, the surface of the varistor 2 and the fuse alloy 5 are placed close to each other in the cavity 1, and the gap and the cavity 1 are filled with an alloy flux 8, and then sealed with epoxy resin 9 Seal the opening of the cavity 1, and the varistor pins 3 and 4 and the fuse pins 6 and 7 protrude from the opening of the cavity 1, wherein the varistor pin 3 adjacent to the fuse alloy can be connected to the fuse pin 6 connect them. When the varistor 2 generates heat due to various factors, the heat can be transferred to the surrounding alloy flux 8 through its surface layer, and then the alloy flux 8 will transfer the heat to the alloy fuse 5 until the alloy is heated and melted And under the action of the alloy flux 8, it quickly shrinks to the two fuse pins 6 and 7, thereby cutting off the circuit and separating the deteriorating piezoresistor 2 from the circuit, and the thermal response speed is very fast. Its structure is simple and co...

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Abstract

This invention puts forward a piezo-resistor with a alloy temperature fuse characterizing that the piezo-resistor and the alloy temperature fuse are set in a closed cavity and their surfaces are close to each other, their lead pins extend to outside of the cavity and alloy fluxing agent is in the cavity, which puts the piezo-resistor and the fuse together to be convenient for use.

Description

technical field [0001] The patent of the present invention relates to a varistor with an alloy temperature fuse, which forms an overvoltage protection device with its own failure protection. Background technique [0002] Existing varistors with over-temperature protection are either complex in structure, such as traditional modular thermal tripping devices and Chinese Patent No.02222055.0 devices; or the response speed of the temperature insurance as an over-temperature protection structure is too slow or it can withstand large currents The impact ability is weak and easy to fail, such as the external alloy type thermal fuse and the Chinese patent No. 00237913.9 device, the traditional shrapnel type thermal tripping device, the external organic type thermal fuse; etc. Contents of the invention [0003] The patent of this invention aims to propose a varistor with an alloy type temperature fuse, which is integrated in one body. It has a simple and compact structure and a fas...

Claims

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Application Information

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IPC IPC(8): H01C7/10H01C7/12
Inventor 徐忠厚
Owner 徐忠厚