Miniature breaker

Abstract

The invention discloses a miniature circuit breaker, which is characterized in that: two terminals of a circuit are connected by a contacting spring plate, and leads the two terminals to be electrically connected, thus leading the circuit to be communicated; wherein, one end of the contacting spring plate, a fixed one, is fixedly connected with one terminal, and the other end of the contacting spring plate is a free one; the contacting spring plate close to the fixed end is bent and extends along a direction away from the free end, to form an elastic arc section; the elastic arc section takes the fixed end as a pivot and is provided with elastic-restoring forces. Through the setup of the elastic arc section, the contacting spring plate can be provided with elastic forces, the spatial lengths of the contacting spring plate can be effectively reduced, and the sizes of the contacting spring plate can be decreased, so as to realize the purpose of the miniaturization of the circuit breakers.

Description

technical field [0001] The invention relates to an electric device, in particular to a miniature breaker. Background technique [0002] Generally speaking, in the overall circuit circuit of the power supply and individual switch circuit circuits, electrical components such as fuses, breakers, and thermal relays are used to protect the circuit to prevent wires from igniting due to current overload and overheating, and to ensure electricity safety. . [0003] In some single electronic and electrical products, such as: high-priced electronic products, information equipment for processing data, or electric heating appliances with high power consumption, the circuit protection of temperature-sensing breakers is usually installed on the power line or inside the body. structure, to protect the single electronic and electrical product, so that the single electronic and electrical product itself can sense and cut off the power in real time when the current is overloaded or the circu...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the shortcomings of the arc-shaped contact shrapnel of the aforementioned existing temperature-sensing circuit breaker, such as: the reaction temperature value of the contact shrapnel that is deformed by heat and reversely bends and bounces cannot be effectively controlled; the error of setting the induction temperature value is large, It is not easy to control the production quality; the sensitivity is not high, so it cannot be tripped in time when overloaded and overheated, so as to protect electronic products; the space length and size of the contact shrapnel cannot be reduced, resulting in the size and overall Relatively bulky; unable to reduce material, or reduce product manufacturing costs

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