Protector of inductive circuit with dual-temperature

Abstract

A contact spring plate and a thermal cut-off device are set between two contact terminals of circuit. When current is overload or the circuit is overheated, the contact spring plate is distortion and has reverse bended to cause circuit in off state. The thermal cut-off device has fusible alloy, when the contact spring plate is failure, the fusible alloy will be heated and broken to cut off the circuit.

Description

technical field [0001] The invention relates to a double temperature induction circuit protector, which is provided with a contact shrapnel and a thermal cutoff device in the circuit circuit; when the current is overloaded or the circuit is overheated, the contact shrapnel is deformed and reversely bent and tripped by heat, or thermal The melting of the fusible alloy of the fuse circuit breaker breaks the thermal fuse circuit breaker, and the circuit is in an OFF state, which has the effect of double temperature induction to achieve the circuit circuit breaker. Background technique [0002] The use of electricity has become an indispensable part of modern human society. The equipment that uses electricity surrounds the surroundings of life, especially the computerized and informationized industries, homes, transportation, education, entertainment, etc., without electricity. [0003] The use of electricity and its equipment has created a convenient modern life. Relatively, th...

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to solve the shortcomings of the temperature-sensing power-off protector in the prior art on temperature sensing, especially because the thickness, curvature and structural characteristics of each contact shrapnel cannot be completely the same, resulting in contact shrapnel The reaction temperature value of reverse bending and bouncing due to thermal deformation cannot be effectively controlled, and the error of the induction temperature value of setting power-off is large. When the current is overloaded and overheated, the contact shrapnel cannot jump off the power in time or the trip is incomplete, so that the circuit still remains. If it is in a conduction state, it will cause overheating of the electronic product and the overall circuit, or generate sparks, causing danger, or repeated power-on and power-off, resulting in unstable current, causing the electronic product to crash or fail to operate normally, shortening the use of lifespan, or even complete damage

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