Fault indication mechanism of residual-current circuit breaker

Abstract

The utility model relates to a fault indication mechanism of a residual-current circuit breaker, which comprises a shell, an L-line circuit breaker unit and an N-line leakage protection unit, the N-line leakage protection unit comprises a handle, an N-line contact frame, an N-line jump pin, a connecting rod, an N-line lock catch, a leakage tripper and a tripping rod, and the L-line circuit breaker unit comprises a rotating frame, an L-line contact frame, an L-line jump pin, an L-line lock catch and an L-line tripping piece. A fault indicating piece is arranged on the shell in a sliding mode, a protruding block matched with the fault indicating piece is arranged on the rotating frame, a poking piece matched with the protruding block is arranged on the fault indicating piece, the protruding block acts along with the rotating frame and abuts against the poking piece, linkage matching of the fault indicating piece and the protruding block is formed, and a poking block matched with the poking piece is arranged on the N-line jump pin. The shifting block acts along with the N-line jump pin and abuts against the shifting piece, and linkage matching of the fault indicating piece and the shifting block is formed. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and reliable indication.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a fault indicating mechanism of a leakage circuit breaker. Background Art

[0002] The leakage circuit breaker is suitable for lines with an AC frequency of 50 / 60Hz, a rated voltage range of 230 / 400V, and a rated current not exceeding 125A. Its main function is to protect the line from overload and short circuit. At the same time, under normal circumstances, it can also be used as a non-frequent operation conversion tool for the line. The leakage circuit breaker is widely used in various places such as industry, commerce, high-rise buildings and residential buildings. When the leakage current in the circuit exceeds the preset value, or a short circuit, overload, etc. occurs, the leakage circuit breaker can automatically trigger the action to ensure the safety of people and electrical equipment.

[0003] The small leakage circuit breaker includes a housing, an L-line circuit breaker unit arranged in the housing, and an N-line leakage protection module arranged in the housing. The existing small leakage circuit breaker has a leakage indication function. When leakage occurs in the main circuit, the leakage indicator changes color following the action of the operating mechanism, thereby achieving the purpose of protecting the circuit. However, the fault indication mechanism of the existing small leakage circuit breaker has a complex structural design, is relatively cumbersome to assemble, and has the defect of unreliable indication. Summary of the invention

[0004] The utility model aims to overcome the defects of the prior art and provide a fault indicating mechanism for a leakage circuit breaker with simple structure, stable and reliable performance, convenient assembly and reliable indication.

[0005] To achieve the above-mentioned purpose, the utility model adopts a fault indication mechanism of a leakage circuit breaker, comprising a shell, an L-line circuit breaker unit, and an N-line leakage protection unit, wherein the shell is respectively formed with a circuit breaker accommodating chamber and a leakage protection accommodating chamber, wherein the L-line circuit breaker unit is placed in the circuit breaker accommodating chamber, and the N-line leakage protection unit is placed in the leakage protection accommodating chamber, wherein the N-line leakage protection unit comprises a handle rotatably arranged on the shell, an N-line contact frame rotatably arranged in the leakage protection accommodating chamber, an N-line tripping buckle rotatably arranged on the N-line contact frame, a connecting rod connected between the N-line tripping buckle and the handle, an N-line lock buckle rotatably arranged on the N-line contact frame and engaged with the N-line tripping buckle, a leakage releaser arranged in the leakage protection accommodating chamber, and a tripping rod used to drive the N-line lock buckle and cooperate with the leakage releaser, wherein the L-line circuit breaker unit comprises a handle rotatably arranged in the circuit breaker accommodating chamber, an N-line contact frame rotatably arranged in the leakage protection accommodating chamber, an N-line tripping buckle rotatably arranged on the N-line contact frame, a connecting rod connected between the N-line tripping buckle and the handle, an N-line lock buckle rotatably arranged on the N-line contact frame and engaged with the N-line tripping buckle, a leakage releaser arranged in the leakage protection accommodating chamber, and a tripping rod used to drive the N-line lock buckle and cooperate with the leakage releaser. A rotating frame inside and linked with the N line contact frame, an L line contact frame linked with the rotating frame, an L line jump buckle rotatably arranged on the rotating frame, an L line lock buckle rotatably arranged on the rotating frame and buckled with the L line jump buckle, an L line release member arranged on the L line lock buckle and linked with the N line lock buckle, a fault indicator is slidably arranged on the shell corresponding to the rotating frame and the L line jump buckle, an indication hole is arranged on the shell corresponding to the fault indicator, a protrusion matched with the fault indicator is arranged on the rotating frame, a paddle matched with the protrusion is arranged on the fault indicator, the protrusion moves with the rotating frame and abuts on the paddle, and constitutes a linkage cooperation between the fault indicator and the protrusion, a toggle block matched with the paddle is arranged on the N line jump buckle, the toggle block moves with the N line jump buckle and abuts on the paddle, and constitutes a linkage cooperation between the fault indicator and the toggle block.

[0006] The beneficial effect of the above structure is that a fault indicator that cooperates with the rotating frame and the N-line jumper is arranged in the housing, and the rotating frame and the N-line jumper can drive the fault indicator respectively, so as to realize the working state indication of the fault indicator. During operation, the handle drives the N-line jumper to engage with the N-line lock, and drives the N-line contact frame to perform the closing action, the N-line contact frame drives the rotating frame to move, the rotating frame drives the L-line jumper to engage with the L-line lock, and the rotating frame drives the L-line contact frame to perform the closing action, and the protrusion of the rotating frame toggles the fault indicator to move, so as to realize the closing indication of the fault indicator. When leakage occurs in the line, the leakage releaser drives the release part, the release part drives the N-line lock to move, the N-line lock and the N-line jumper are unlocked, the N-line lock drives the L-line lock block to move through the L-line release part, the L-line lock and the L-line jumper are unlocked, the toggle block on the L-line jumper toggle the fault indicator to move, and the fault indicator slides to the fault indication position, thereby realizing the leakage fault indication of the leakage circuit breaker. Therefore, the fault indication mechanism of the leakage circuit breaker has the advantages of simple structure, stable and reliable performance, convenient assembly, and reliable indication.

[0007] In particular, an elastic arm is provided on both sides of the fault indicator, two positioning grooves matching with the elastic arm are provided in the housing, and the elastic arm moves with the fault indicator and switches back and forth between the two positioning grooves. The elastic arm of the fault indicator matches with the two positioning grooves in the housing, thereby ensuring that the fault indicator can reliably move on the housing, which is conducive to improving the indication reliability of the fault indicator.

[0008] In particular, a clamping plate is provided at one end of the rotating frame, a clamping groove is provided on the N-line contact frame, the clamping plate is clamped in the clamping groove, and a clamping fit between the clamping plate and the N-line contact frame is formed. The rotating frame is clamped on the N-line contact frame through the clamping plate, thereby facilitating the assembly of the rotating frame and the N-line contact frame, and ensuring that the transmission between the rotating frame and the N-line contact frame is more reliable.

[0009] In particular, the L-line lock buckle is provided with a slot that matches the L-line release member, and one end of the L-line release member is provided with a snap-in block that matches the slot, and the snap-in block is snapped into the slot to form a snap-in fit between the L-line lock buckle and the L-line release member. The L-line lock buckle and the L-line release member are connected by snap-in fit, thereby facilitating the assembly of the L-line lock buckle and the L-line release member, and achieving higher assembly efficiency.

[0010] In particular, a driving block that matches the N-line lock buckle is provided on the other end of the L-line release member, and a toggle arm that matches the driving block is provided on the N-line lock buckle. The toggle arm moves with the N-line lock buckle and contacts the driving block, and forms a linkage cooperation between the L-line release member and the toggle arm. The N-line lock buckle drives the L-line release member to move through the toggle arm, thereby ensuring that the N-line lock buckle pushes the L-line lock buckle to move through the L-line release member, thereby realizing the unlocking of the L-line lock block and the L-line jump buckle, and the release action is more sensitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a three-dimensional diagram of the internal structure of an embodiment of the utility model from the first viewing angle.

[0012] Figure 2 This is a stereoscopic diagram of the internal structure of an embodiment of the utility model from a second viewing angle.

[0013] Figure 3 This is an exploded view of an embodiment of the utility model.

[0014] Figure 4 This is the internal structure of an embodiment of the utility model.

[0015] Figure 5 It is a three-dimensional diagram of the housing of an embodiment of the utility model. DETAILED DESCRIPTION

[0016] like Figures 1 to 5As shown, the embodiment of the utility model is a fault indication mechanism of a leakage circuit breaker, comprising a housing 10, an L-line circuit breaker unit 20, and an N-line leakage protection unit 30, wherein the housing 10 is respectively formed with a circuit breaker accommodating chamber 100 and a leakage protection accommodating chamber 101, wherein the L-line circuit breaker unit 20 is placed in the circuit breaker accommodating chamber 100, and the N-line leakage protection unit 30 is placed in the leakage protection accommodating chamber 101, and the N-line leakage protection unit 30 comprises a handle 31 rotatably arranged on the housing 10, a handle 31 rotatably arranged on the leakage protection chamber 101, and a handle 31 rotatably arranged on the leakage protection chamber 101. The N-line contact frame 32 in the cavity 101, the N-line tripping buckle 33 rotatably arranged on the N-line contact frame 32, the connecting rod 34 connected between the N-line tripping buckle 33 and the handle 31, the N-line lock buckle 35 rotatably arranged on the N-line contact frame 32 and buckled with the N-line tripping buckle 33, the leakage release 36 arranged in the leakage protection accommodating cavity 101, and the tripping rod 37 for driving the N-line lock buckle 35 and cooperating with the leakage release 36. The L-line circuit breaker unit 20 includes a N-line contact frame 32 rotatably arranged in the circuit breaker accommodating cavity 100 and connected with the N-line contact frame 32. The rotating frame 21 is rotatably matched, the L-line contact frame 22 is linked with the rotating frame 21, the L-line jumper 23 is rotatably set on the rotating frame 21, the L-line lock 24 is rotatably set on the rotating frame 21 and buckled with the L-line jumper 23, and the L-line release member 25 is set on the L-line lock 24 and linked with the N-line lock 35. A fault indicator 26 is slidably set on the housing 10 corresponding to the position between the rotating frame 21 and the L-line jumper 23, and an indicator hole 1000 is set on the housing 10 corresponding to the fault indicator 26. The rotating frame 2 1 is provided with a protrusion 211 matched with the fault indicator 26, and the fault indicator 26 is provided with a paddle 261 matched with the protrusion 211, and the protrusion 211 moves with the rotating frame 21 and contacts the paddle 261, and constitutes the linkage cooperation between the fault indicator 26 and the protrusion 211, and the N line jump buckle 23 is provided with a toggle block 231 matched with the paddle 261, and the toggle block 231 moves with the N line jump buckle 23 and contacts the paddle 261, and constitutes the linkage cooperation between the fault indicator 26 and the toggle block 231. An elastic arm 262 is respectively provided on both sides of the fault indicator 26, and two positioning grooves 1001 matched with the elastic arm 262 are provided in the housing 10, and the elastic arm 262 moves with the fault indicator 26 and switches back and forth between the two positioning grooves 1001. The elastic arm of the fault indicator cooperates with the two positioning grooves in the housing, so as to ensure that the fault indicator can reliably operate on the housing, which is beneficial to improving the indication reliability of the fault indicator. A clamping plate 212 is provided at one end of the rotating frame 21, and a clamping groove 321 is provided on the N line contact frame 32. The clamping plate 212 is clamped in the clamping groove 321, and the clamping plate 212 and the N line contact frame 32 are clamped together.The rotating frame is clamped on the N-line contact frame through a clamping plate, thereby facilitating the assembly of the rotating frame and the N-line contact frame and ensuring that the transmission of the rotating frame and the N-line contact frame is more reliable.

[0017] like Figures 1 to 3 As shown, the L-line lock buckle 24 is provided with a slot 241 that matches the L-line release member 25, and one end of the L-line release member 25 is provided with a snap-in block 251 that matches the slot 241. The snap-in block 251 is snapped into the slot 241, and constitutes the snap-in cooperation between the L-line lock buckle 24 and the L-line release member 25. The L-line lock buckle and the L-line release member are connected by snap-in cooperation, so as to facilitate the assembly of the L-line lock buckle and the L-line release member, and the assembly efficiency is higher. The other end of the L-line release member 25 is provided with a driving block 252 that matches the N-line lock buckle 35, and the N-line lock buckle 35 is provided with a toggle arm 351 that matches the driving block 252. The toggle arm 351 moves with the N-line lock buckle 35 and contacts the driving block 252, and constitutes the linkage cooperation between the L-line release member 25 and the toggle arm 351. The N-line lock buckle drives the L-line tripping piece to move through the toggle arm, thereby ensuring that the N-line lock buckle pushes the L-line lock buckle to move through the L-line tripping piece, thereby realizing the tripping (unlocking) of the L-line locking block and the L-line jump buckle, and the tripping action is more sensitive.

[0018] A fault indicator that matches the rotating frame and the N-line jumper is arranged in the housing. The rotating frame and the N-line jumper can drive the fault indicator respectively, so as to realize the working state indication of the fault indicator. During operation, the handle drives the N-line jumper to engage with the N-line lock, and drives the N-line contact frame to perform the closing action, the N-line contact frame drives the rotating frame to move, the rotating frame drives the L-line jumper to engage with the L-line lock, and the rotating frame drives the L-line contact frame to perform the closing action, and the protrusion of the rotating frame toggles the fault indicator to move, so as to realize the closing indication of the fault indicator. When leakage occurs in the line, the leakage releaser drives the release member, the release member drives the N-line lock to move, the N-line lock and the N-line jumper are unlocked, the N-line lock drives the L-line lock block to move through the L-line release member, the L-line lock and the L-line jumper are unlocked, the toggle block on the L-line jumper toggles the fault indicator to move, and the fault indicator slides to the fault indication position, so as to realize the leakage fault indication of the leakage circuit breaker. Therefore, the fault indication mechanism of the leakage circuit breaker has the advantages of simple structure, stable and reliable performance, convenient assembly and reliable indication.

Claims

1. A fault indication mechanism of a leakage circuit breaker, comprising a housing, an L-line circuit breaker unit, and an N-line leakage protection unit, characterized in that: The invention comprises a housing in which a circuit breaker accommodating chamber and a leakage protection accommodating chamber are respectively formed, wherein the L-line circuit breaker unit is placed in the circuit breaker accommodating chamber, and the N-line leakage protection unit is placed in the leakage protection accommodating chamber, wherein the N-line leakage protection unit comprises a handle rotatably arranged on the housing, an N-line contact frame rotatably arranged in the leakage protection accommodating chamber, an N-line tripping buckle rotatably arranged on the N-line contact frame, a connecting rod connected between the N-line tripping buckle and the handle, an N-line lock rotatably arranged on the N-line contact frame and engaged with the N-line tripping buckle, a leakage releaser arranged in the leakage protection accommodating chamber, and a tripping rod for driving the N-line lock and cooperating with the leakage releaser, wherein the L-line circuit breaker unit comprises a rotating frame rotatably arranged in the circuit breaker accommodating chamber and cooperating with the N-line contact frame, and a connecting rod arranged in linkage with the rotating frame. An L-line contact frame, an L-line jumper rotatably arranged on the rotating frame, an L-line locker rotatably arranged on the rotating frame and buckled with the L-line jumper, and an L-line release member arranged on the L-line locker and linked with the N-line locker, a fault indicator is slidably arranged on the shell corresponding to the rotating frame and the L-line jumper, an indication hole is arranged on the shell corresponding to the fault indicator, a protrusion matched with the fault indicator is arranged on the rotating frame, a paddle matched with the protrusion is arranged on the fault indicator, the protrusion moves with the rotating frame and abuts on the paddle, and constitutes a linkage cooperation between the fault indicator and the protrusion, a toggle block matched with the paddle is arranged on the N-line jumper, the toggle block moves with the N-line jumper and abuts on the paddle, and constitutes a linkage cooperation between the fault indicator and the toggle block.

2. The fault indication mechanism of the leakage circuit breaker according to claim 1, characterized in that: An elastic arm is respectively arranged on both sides of the fault indicator, and two positioning grooves matching with the elastic arm are arranged in the shell. The elastic arm moves with the fault indicator and switches back and forth between the two positioning grooves.

3. The fault indication mechanism of the leakage circuit breaker according to claim 1 or 2, characterized in that: A clamping plate is arranged at one end of the rotating frame, a clamping groove is arranged on the N-line contact frame, the clamping plate is clamped in the clamping groove, and a clamping fit between the clamping plate and the N-line contact frame is formed.

4. The fault indication mechanism of the leakage circuit breaker according to claim 1 or 2, characterized in that: The L-line lock buckle is provided with a slot matching with the L-line release piece, and one end of the L-line release piece is provided with a connecting block matching with the slot. The connecting block is engaged in the slot and constitutes a connecting fit between the L-line lock buckle and the L-line release piece.

5. The fault indication mechanism of the leakage circuit breaker according to claim 4, characterized in that: A driving block cooperating with the N line lock is arranged on the other end of the L line release member, and a toggle arm cooperating with the driving block is arranged on the N line lock. The toggle arm moves with the N line lock and contacts the driving block, and constitutes the linkage cooperation between the L line release member and the toggle arm.

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