Zinc oxide piezoresistor with safety protection device

Abstract

The invention discloses a zinc oxide piezoresistor with a safety protection device. The piezoresistor comprises a piezoresistor main body, an epoxy resin wrapping layer, a protective cover, a clampingblock, a pole piece, a heat dissipation cover, a convex block, a heat dissipation plate, a first connecting rod, an arc-shaped block, a fixed block, a connecting pipe, a connecting plate, a protective pipe, connecting pieces, a connecting groove, a screw pipe, a second connecting rod, a fixed ring, a connecting column, a heat conduction rod, a bonding pad, limiting grooves and limiting strips. According to the invention, the connecting groove is formed, so the connecting pieces are conveniently broken, so that the length of the connecting pieces is conveniently adjusted according to differentmounting positions, the mounting efficiency is improved, meanwhile, the heat conduction rod, the heat dissipation plate and the heat dissipation cover are used for conducting heat dissipation treatment on the device, the epoxy resin wrapping layer is wrapped by the mounted heat dissipation cover and protective cover, therefore, the piezoresistor main body, the pole piece, the bonding pad, the connecting column and the heat conducting rod are protected, and the device is protected.

Description

technical field [0001] The invention relates to the technical field of varistors, in particular to a zinc oxide varistor with a safety protection device. Background technique [0002] The varistor is a solid-state voltage sensitive element that has nonlinear volt-ampere characteristics and suppresses transient overvoltage. When the terminal voltage is lower than a certain threshold, the current of the varistor is almost equal to zero; when it exceeds this threshold, the current value increases sharply with the increase of the terminal voltage. The nonlinear volt-ampere characteristic of the varistor is caused by the change of the voltage drop of the varistor, so it is also called a nonlinear resistor. The table lists the common types of varistors. Among them, the varistor includes the zinc oxide varistor, but when the traditional varistor is fixed, it is not conducive to adjusting the length of the connecting pin, which reduces the installation efficiency of the zinc oxide...

AI Technical Summary

Problems solved by technology

Among them, the varistor includes the zinc oxide varistor, but when the traditional varistor is fixed, it is not conducive to adjusting the length of the connecting pin, which reduces the installation efficiency of the zinc oxide varistor, and at the same time The process of using zinc oxide varistors is not conducive to the heat dissipation treatment of zinc oxide varistors, which can easily lead to damage of zinc oxide varistors, thereby reducing the service life. At the same time, traditional zinc oxide varistors directly Exposed on the surface, not conducive to the protection of zinc oxide varistors

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