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CN-224217454-U - Leakage protector

CN224217454UCN 224217454 UCN224217454 UCN 224217454UCN-224217454-U

Abstract

The application discloses a leakage protector which comprises a support, a first contact piece, a first elastic piece, a second contact piece, a second elastic piece, a limiting piece, an electromagnetic driver, a pull rod, a reset spring, a current transformer and a circuit board, wherein the first contact piece, the first elastic piece, the second contact piece, the second elastic piece, the limiting piece and the circuit board are arranged on the support, a first fixing groove, a second fixing groove, a first clamping groove, a second clamping groove, a limiting groove and a guide groove are formed in the support along a first direction, the first contact piece is embedded in the first fixing groove, the first contact piece is provided with a first contact part, the first elastic piece is provided with a first swing end, a first clamping part and a first U-shaped part, the first clamping part is clamped in the first clamping groove, the first swing end is connected with the first contact part, the second contact piece is embedded in the second fixing groove, the second contact piece is provided with a second swing end, the second clamping part and the second clamping part is connected with the second contact part. The leakage protector provided by the application has the advantages of simple structure, convenience in assembly and high automation degree.

Inventors

  • ZHOU HUAN

Assignees

  • 安兴智能电器(宁波)有限公司

Dates

Publication Date
20260508
Application Date
20250509

Claims (10)

  1. 1. The leakage protector is characterized by comprising a support, a first contact piece, a first elastic piece, a second contact piece, a second elastic piece, a limiting piece, an electromagnetic driver, a pull rod, a reset spring, a current transformer and a circuit board; The support is provided with a first fixing groove, a second fixing groove, a first clamping groove, a second clamping groove, a limiting groove and a guide groove along a first direction; the first contact piece is embedded in the first fixing groove and is provided with a first contact part; The first elastic piece is provided with a first swinging end, a first clamping and embedding part and a first U-shaped part which are sequentially arranged, the first clamping and embedding part is clamped and embedded in the first clamping and embedding groove, and the first swinging end is detachably connected with the first contact part; The second contact piece is embedded in a second fixing groove on the support, and the second contact piece is provided with a second contact part; The second elastic piece is provided with a second swinging end, a second clamping and embedding part and a second U-shaped part which are sequentially arranged, the second clamping and embedding part is clamped and embedded in the second clamping and embedding groove, and the second swinging end is detachably connected with the second contact part; The limiting piece is rotatably arranged in the limiting groove, a first limiting arm, a second limiting arm and a first hooking part are arranged on the limiting piece, in the first direction, the first limiting arm and the first contact part are positioned on two sides of the first swinging end, the second limiting arm and the second contact part are positioned on two sides of the second swinging end, and the limiting piece can move along the first direction; The pull rod is embedded in the guide groove, the reset spring is compressed between the pull rod and the guide groove along the first direction, a second hooking part is arranged on the pull rod, and the second hooking part is detachably clamped with the first hooking part; the first U-shaped part and the second U-shaped part penetrate through the current transformer, and the first U-shaped part, the second U-shaped part, the current transformer and the electromagnetic driver are respectively connected with the circuit board.
  2. 2. The earth leakage protector of claim 1, wherein the support is provided with a limit post along the first direction, the limit post is provided with a locking hook, the circuit board is provided with a limit hole, the circuit board is buckled on the support along the first direction, the limit post is arranged in the limit hole in a penetrating manner, and the locking hook is hooked on the circuit board.
  3. 3. The earth leakage protector of claim 2, further comprising a first tab and a second tab; The first lug is electrically connected with the tail end of the first U-shaped part, and the second lug is electrically connected with the tail end of the second U-shaped part.
  4. 4. The leakage protector of claim 3, wherein the first lug and the first U-shaped part are respectively positioned at two sides of the circuit board, and a first locking groove is formed on the circuit board, and the first lug is embedded in the first locking groove; The second wiring lugs and the second U-shaped parts are respectively positioned at two sides of the circuit board, a second locking groove is formed in the circuit board, and the second wiring lugs are clamped in the second locking grooves.
  5. 5. The earth leakage protector of claim 4, wherein the connection sides of the first and second lugs are each connected with a terminal.
  6. 6. The earth leakage protector of claim 2, wherein the support is provided with a positioning post, and the current transformer is sleeved on the positioning post.
  7. 7. The earth leakage protector of claim 1, wherein the first and second fixing grooves are configured as through holes penetrating the support, the first contact portion is penetrated through the first fixing groove, the first contact portion abuts against a notch of the first fixing groove, the second contact portion is penetrated through the second fixing groove, and the second contact portion abuts against a notch of the second fixing groove.
  8. 8. The earth leakage protector of claim 1, wherein said electromagnetic drive comprises an electromagnet coil and an electromagnet float pin; The electromagnet coil is arranged on the support and is electrically connected with the circuit board; the electromagnet floating pin is movably arranged in the electromagnet coil and is connected with the limiting piece.
  9. 9. The earth leakage protector of claim 8, wherein the limiting member is provided with a chute along the first direction, the end of the electromagnet floating pin is embedded in the chute, and the end of the electromagnet floating pin slides relative to the chute.
  10. 10. The earth leakage protector of any one of claims 1-9, wherein the first swing end, the first contact portion, the second swing end, and the second contact portion are suspended from the support.

Description

Leakage protector Technical Field The application belongs to the technical field of leakage protection devices, and particularly relates to a leakage protector. Background The leakage protector is an electric safety device for detecting abnormal leakage working condition of a circuit and cutting off a power supply, and is mainly applied to equipment leakage protection and personal electric shock protection. The common leakage protector mainly comprises a detection unit, an intermediate amplification unit and a circuit breaking execution unit, wherein the detection unit mainly comprises a current transformer for monitoring the current balance state of a live wire and a zero wire in real time and particularly monitoring the current difference value between the live wire and the zero wire, namely leakage current, the intermediate amplification unit receives a leakage current signal and transmits the leakage current signal to the circuit breaking execution unit after amplification, and the circuit breaking execution unit mainly comprises an electromagnetic unhooking device for cutting off a power supply circuit. The current type leakage protector realizes leakage detection based on ‌ kirchhoff current law, the leakage protector is provided with a leakage threshold value, such as 30mA, when the detected leakage current exceeds the leakage threshold value, a detection signal amplified by the intermediate amplifying unit can drive the circuit breaking executing unit to act, and the structure of a contact, a pin and the like in a contact connection state in a power supply circuit is disconnected, so that the circuit breaking operation is realized. In general, in normal state ‌, the live wire current is equal to zero line current, the magnetic field of the transformer counteracts, no signal is output, in abnormal ‌ leakage state, the live wire current is larger than zero line current, the leakage current is larger than or equal to a preset leakage threshold, and the signal output by the transformer triggers the electromagnetic release to implement power-off action. The current leakage protector mainly comprises a shell, a support, various action executing structures such as action elements and various electric elements such as conductive contact pieces, terminals and electronic elements, the structure and the composition of the whole current leakage protector are complex, the requirement on assembly operation is high, flaws and even defective products are easy to occur, the assembly difficulty is high, a large number of manual participation links are often needed, the automatic assembly degree is low, and the overall assembly efficiency is not ideal. Disclosure of Invention The application provides a leakage protector, which aims to solve the technical problems of complex internal structure, high assembly difficulty, high manual participation degree, low automation degree and non-ideal overall assembly efficiency of the current type leakage protector to at least a certain extent. For this purpose, The embodiment of the application provides a leakage protector, which comprises a support, a first contact piece, a first elastic piece, a second contact piece, a second elastic piece, a limiting piece, an electromagnetic driver, a pull rod, a reset spring, a current transformer and a circuit board, wherein the support is provided with a first contact piece and a second contact piece; The support is provided with a first fixing groove, a second fixing groove, a first clamping groove, a second clamping groove, a limiting groove and a guide groove along a first direction; the first contact piece is embedded in the first fixing groove and is provided with a first contact part; The first elastic piece is provided with a first swinging end, a first clamping and embedding part and a first U-shaped part which are sequentially arranged, the first clamping and embedding part is clamped and embedded in the first clamping and embedding groove, and the first swinging end is detachably connected with the first contact part; The second contact piece is embedded in a second fixing groove on the support, and the second contact piece is provided with a second contact part; The second elastic piece is provided with a second swinging end, a second clamping and embedding part and a second U-shaped part which are sequentially arranged, the second clamping and embedding part is clamped and embedded in the second clamping and embedding groove, and the second swinging end is detachably connected with the second contact part; The limiting piece is arranged in the limiting groove in a deflectable way, a first limiting arm, a second limiting arm and a first hooking part are arranged on the limiting piece, in the first direction, the first limiting arm block and the first contact part are positioned at two sides of the first swinging end, the second limiting arm and the second contact part are positioned at two sides of the second swinging end, and t