Electric leakage protection socket with function of reverse wiring protection

Abstract

The invention provides an electric leakage protection socket with a function of reverse wiring protection, and the socket comprises a main loop switch and an electromagnetic release mechanism, and also comprises a lifting part. Two sides of the lifting part are respectively provided with a metal rod in a sleeving manner. The lower end of the metal rod is sleeved by a reset spring, and the upper end of the metal rod is in contact connection with a movable metal piece. The reset spring of a zero line metal rod and a static metal piece form a reverse wiring loop switch. The lifting part is cooperatively provided with a locking part, and the head of the locking part abuts against a side wall of the lifting part. The electromagnetic release mechanism comprises an iron core, and the iron core is provided with a driving disc. During reverse wiring, the iron core pulls the lifting part downwards, and the head of the locking part covers the top of the lifting part under the action of an elastic resetting mechanism. The beneficial effects of the invention are that a main loop switching mechanism is reasonable and ingenious in structure, and is quick in response; during reverse wiring, the lifting part is driven by the iron core to sinks for automatic releasing; moreover, the locking part automatically locks the lifting part; the reset button cannot achieve the resetting; the socket is safe for use.

Description

technical field [0001] The invention relates to the field of power sockets, in particular to a leakage protection socket with reverse wiring protection function. Background technique [0002] Existing leakage protection sockets, for example (invention patent with patent number 201010248157.8), generally include a housing, an output conductor, a power input terminal, and a power output terminal, which are used to close the main circuit switch and cooperate with the locking mechanism to maintain the closed state of the main circuit switch. Furthermore, the reset button that keeps the power supply input terminal, the power supply output terminal and the output conductor conducting, and the electromagnetic tripping mechanism used to disconnect the main circuit switch when a leakage current is generated, etc., the metal sheets drawn from the input terminal and the output terminal must be at least one For the elastic metal sheet, the length of the elastic metal sheet is long and o...

AI Technical Summary

Problems solved by technology

The mains power supply includes neutral wire and live wire. The elastic metal sheets must appear in pairs. It is difficult to achieve the same bending degree of the two elastic metal sheets during processing, and the repeated elastic lifting of the free end will easily lead to strain and deformation after long-term use. The left and right elastic metal sheets are difficult to keep consistent and the repeated elastic lifting will lead to difficulty in ensuring the reliability of the contact and conduction, and there are certain safety hazards; moreover, the processing and assembly process of the elastic metal sheets is relatively complicated, using a lot of materials, and the yield is relatively low

[0003] The invention patent application with the application number of 201410499136.1 discloses an improved earth leakage protection socket. The movable metal sheet is elastically arranged in the lifting plate, and after the reset button cooperates with the lock buckle, it bounces up and drives the lifting plate to lift so that the moving metal sheet is in contact with the static socket. The contact end is connected to conduction, and this structure still has certain limitations: 1. Lifting and closing, high processing and assembly process precision requirements; 2. Need to connect flexible wires and transition metal sheets, etc., the structure is more complicated and the processing cost is high; 3. Lifting The closed on-off method needs to overcome the resistance of the reset spring on the reset button to close, which takes a relatively long time and is easy to cause spring strain; 4. The lock lock is block-shaped, without an anti-extrusion structure, and it is easy to dislodge from the lock installation seat. out

Another invention patent application with application number 201510036392.1 has improved the above problems, but these leakage protection sockets with reverse wiring protection function are all realized through electrical structures (control chips, thyristors, etc. must be intact) when reverse wiring. Tripping, if the thyristor and other components are damaged and the main circuit switch is in the closed state, it will not be able to protect against reverse wiring, and there is no mechanical forced tripping function, which poses a safety hazard

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