Convenient-to-judge detection type over-current protection device

Abstract

The invention discloses a convenient-to-judge detection type over-current protection device which comprises a box body. An electrifying plate is embedded in the inner wall of the top of the box body,a conductive column is rotatably connected to the inner wall of the bottom of the box body through a bearing, and a rotating plate made of an insulating material is coaxially welded to the upper end of the conductive column. Memory metal is fixedly connected between the rotating plate and the electrifying plate, and a circular connecting plate is coaxially welded to the lower end of the conductivecolumn. The device has the advantages that overload current in a household circuit and a short circuit problem of an electric appliance can be timely responded, the household circuit and the electricappliance are protected, the storage battery electric appliances in the box body are connected in series, by utilizing the characteristic that the phase resistance value of the internal circuit of the short-circuited electric appliance is small, the current of the storage battery enables the indicating lamp to emit a comparative amount of light, a user can quickly discover which electrical appliance is short-circuited, so that the problem can be conveniently solved in time.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a detection-type overcurrent protection device for easy judgment. Background technique [0002] Overcurrent refers to the amount of current passing through a conductor in excess of what is expected, resulting in excessive heating, and the risk of fire or damage. Possible causes of overcurrent include short circuits, excessive loads, improper design or ground faults, usually using fuses , circuit breaker, temperature sensor and current limiter to control the risk of overcurrent [0003] The device that consumes electrical energy in the circuit is called an electrical appliance (also called a load). The function of an electrical appliance is to convert electrical energy into other forms of energy. In the use of household electrical appliances, overcurrents that may generally occur are divided into overload currents and short-circuit currents. , while in the prior art...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that although the fuse fuse or leakage protector adopted in the prior art can cut off the power in time to protect the household circuit, it is impossible to judge which electrical appliance has the short circuit problem, and it is troublesome to check one by one for maintenance, and Affecting the normal use of other electrical appliances, a detection-type over-current protection device that is easy to judge is proposed

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