Built-in leakage protection module

Abstract

A built-in electric leakage protection module comprises the components of a base which is provided with a base chamber; a foundation which is provided with a push rod actuating mechanism accommodating chamber; a circuit board and a push rod actuating mechanism; an upper cover and a push rod, wherein the upper cover is provided with a resetting button and an experiment button, and the push rod is provided with a resetting hook plate and a push rod spring; a dynamic contact mechanism which comprises a first dynamic contact, a second dynamic contact, a first wire outlet terminal and a second wire outlet terminal; a static contact mechanism which comprises a first static contact, a second static contact, a first wire inlet terminal and a second wire inlet terminal; a zero-sequence current transformer which is connected with a circuit board; and a transverse arm rack which is arranged in the base chamber. The built-in electric leakage protection module is characterized in that the lower part of the push rod is provided with push rod hanging pins; the upper part of the transverse arm rack is provided with push rod hanging pin matching chambers; the first wire outlet terminal and the second wire outlet terminal are fixed to the back side of the upper cover; the first wire inlet terminal and the second wire inlet terminal are fixed to the front side of the upper cover; the left side of the base is provided with a first dynamic contact head force-application spring seat; the base chamber is provided with a first dynamic contact force-application spring; the right side of the foundation is provided with a second dynamic contact force-application spring seat; and the seat chamber is internally provided with a second dynamic contact force-application spring. The built-in electric leakage protection module has advantages of high action reliability, small base size, high convenience in wiring and mounting, and high safety.

Description

technical field [0001] The invention belongs to the technical field of safety devices for low-voltage electrical appliances, and in particular relates to a built-in leakage protection module. Background technique [0002] The built-in concept mentioned above means that it is equipped with electrical components such as power strips (also called "power wiring boards") in use. In the published Chinese patent literature, not only the technical information of the leakage protection plug can be seen, but also the technical information of the leakage protection socket. The former integrates the leakage protection mechanism on the plug to protect the electrical appliances using the plug. Functions, typically such as "a leakage protection plug capable of waterproofing" recommended by CN203326256U, "a leakage protection plug that can be switched between three poles and two poles" provided by CN103887660B, and "a leakage protection plug capable of forced tripping" introduced by CN10493...

AI Technical Summary

Problems solved by technology

[0004] The "tripping mechanism of the earth leakage circuit breaker" recommended by the Chinese patent authorization announcement number CN2528101Y can be installed in the electrical components such as the aforementioned power strips, and can objectively fulfill the technical effects described in the technical effect column of the manual ( paragraph 5 on page 1 of the text of the instruction manual), but there are the following shortcomings: First, since the push rod acts on the cross-arm frame through the lock, that is, the push rod does not directly act on the cross-arm frame, so the force transmission link There are many, which affect the stability and reliability of the action; secondly, because a pair of incoming line terminals and a pair of outgoing line terminals are respectively arranged at both ends of the base, which not only increases the size of the base, but also is relatively troublesome to install; thirdly, Since the separation of the moving contacts at the free ends of a pair of moving contacts from the static contacts of a pair of static contacts is achieved without external force by the self-elasticity of a pair of moving contacts, once a pair of moving contacts If the self-elasticity becomes fatigued due to a long time, the separation effect of the moving contact and the static contact will be affected, and even cannot be completely separated, which will affect the cutting off of the circuit in the state of leakage and even cause safety accidents

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