Electric leakage fault indication mechanism of electric leakage circuit breaker

Abstract

The utility model relates to an electric leakage fault indicating mechanism of an electric leakage circuit breaker, which comprises a shell, a handle, a contact frame, a jump pin, a lock catch, a U-shaped pull rod, an electric leakage tripper and a tripping piece, the tripping piece acts along with an ejector rod of the electric leakage tripper and abuts against the lock catch, linkage matching of the lock catch and the tripping piece is formed, and a tripping indicating piece is arranged on the shell in a sliding mode. An indicating hole is formed in the position, corresponding to the tripping indicating piece, of the shell, the tripping indicating piece is provided with a linkage piece extending between the jump pin and the contact frame, the jump pin is provided with a protruding block matched with the linkage piece, the protruding block acts along with the jump pin and abuts against one side of the linkage piece, and linkage matching of the tripping indicating piece and the jump pin is formed. The contact frame is provided with a protruding strip matched with the linkage piece, the protruding strip acts along with the contact frame and abuts against the other side of the linkage piece, and linkage matching of the tripping indicating piece and the contact frame is formed. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and accurate indication.

Description

Technical Field

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

[0002] A leakage circuit breaker, also known as a leakage protector or leakage switch, is a device for protecting electrical safety. It is mainly used to cut off the power supply when a leakage fault occurs in the equipment, thereby protecting people from electric shock. The working principle of the leakage circuit breaker is based on current balance. When the residual current in the line exceeds the preset maximum value, it will automatically disconnect, playing a role in protecting the power supply and preventing safety accidents. Leakage circuit breakers are widely used in many fields. In household electrical safety, leakage circuit breakers are widely used in households because household electrical facilities may have problems such as aging and poor quality. Leakage circuit breakers also play an important role in commercial places due to their large power load and complex and diverse equipment. In the industrial field, leakage circuit breakers can protect the safety of various production equipment and production lines, and avoid dangers to personnel and equipment due to leakage accidents. In addition, leakage circuit breakers are also indispensable in public places such as shopping malls, schools, hospitals, hotels, etc. because of the large power load and safety.

[0003] 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 leakage fault indication mechanism of the existing small leakage circuit breaker has a complex structure design, is relatively cumbersome to assemble, and has the defect of unreliable indication. Summary of the invention

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

[0005] To achieve the above-mentioned purpose, the utility model adopts a leakage fault indication mechanism of a leakage circuit breaker, comprising a housing, a handle rotatably arranged on the housing, a contact frame rotatably arranged in the housing, a trip button rotatably arranged on the contact frame, a lock button rotatably arranged on the contact frame and engaged with the trip button, a U-shaped pull rod arranged between the handle and the trip button, a leakage release device arranged in the housing, and a tripping piece rotatably arranged in the housing and linked with the leakage release device, wherein the tripping piece moves with the top rod of the leakage release device and contacts the lock button, and constitutes a linkage arrangement between the lock button and the tripping piece. A trip indicator is slidably provided on the shell, an indicator hole is provided on the shell corresponding to the trip indicator, a linkage piece extending between the trip button and the contact frame is provided on the trip indicator, the trip button has a convex block matched with the linkage piece, the convex block moves with the trip button and abuts on one side of the linkage piece, and constitutes a linkage cooperation between the trip indicator and the trip button, and a convex strip matched with the linkage piece is provided on the contact frame, the convex strip moves with the contact frame and abuts on the other side of the linkage piece, and constitutes a linkage cooperation between the trip indicator and the contact frame.

[0006] The beneficial effect of the above structure is that a trip indicator that matches the trip button and the contact bracket is provided in the housing, and the trip button and the contact bracket can drive the trip indicator respectively, so as to realize the working status indication of the trip indicator. During operation, the handle drives the trip button to engage with the lock button, and drives the contact bracket to perform the closing action, and the convex strip of the contact bracket drives the trip indicator to move, so as to realize the closing indication of the trip indicator. When leakage occurs in the line, the leakage release drives the tripping part, the tripping part drives the lock button to move, the lock button and the trip button are unlocked, and the convex block on the trip button drives the trip indicator to move, so as to realize the leakage fault indication of the leakage circuit breaker. Therefore, the leakage fault indication mechanism of the leakage circuit breaker has the advantages of simple structure, stable and reliable performance, convenient assembly, and accurate indication.

[0007] In particular, a sliding groove matching with the trip indicator is provided on the housing, and the trip indicator is slidably arranged in the sliding groove. A sliding groove matching with the trip indicator is provided in the housing, so that the trip indicator can slide reliably in the sliding groove, which is conducive to improving the indication reliability of the trip indicator.

[0008] In particular, an elastic arm is provided on both sides of the trip indicator, a limiting convex block matching with the elastic arm is provided in the sliding groove, two positioning grooves are formed on both sides of the corresponding limiting convex block in the sliding groove, and the elastic arm moves with the trip indicator and switches back and forth between the two positioning grooves. The elastic arm of the trip indicator can move back and forth in the two positioning grooves, thereby ensuring that the trip indicator can reliably move in the sliding groove, which is conducive to improving the working reliability of the leakage fault indication mechanism.

[0009] In particular, one end of the lock has a linkage part extending toward the direction of the release member, the linkage part is provided with a load-bearing convex arc surface matching with the release member, one end of the release member is provided with a driving part matching with the linkage part, the driving part is provided with a driving plane matching with the load-bearing convex arc surface, the driving plane moves with the release member and contacts with the load-bearing convex arc surface. The release member pushes the linkage part of the lock to move through the driving part, thereby ensuring that the release member can reliably push the lock to move, thereby ensuring the transmission reliability of the release member and the lock.

[0010] In particular, a positioning hole is provided at the other end of the release member, a positioning shaft is provided in the housing, the positioning shaft is inserted into the positioning hole, and a rotational connection is formed between the release member and the positioning shaft. The positioning hole of the release member is engaged with the positioning shaft in the housing, so that the assembly of the release member and the housing is facilitated, and the assembly is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the internal structure of an embodiment of the utility model.

[0012] Figure 2 It is the front view of the internal structure of the embodiment of the utility model.

[0013] Figure 3 It is a three-dimensional diagram of a trip indicator according to an embodiment of the utility model.

[0014] Figure 4 It is a three-dimensional diagram of the housing of an embodiment of the utility model. DETAILED DESCRIPTION

[0015] like Figures 1 to 4As shown, the embodiment of the utility model is a leakage fault indication mechanism of a leakage circuit breaker, comprising a housing 10, a handle 11 rotatably arranged on the housing 10, a contact frame 12 rotatably arranged in the housing 10, a tripping buckle 13 rotatably arranged on the contact frame 12, a lock buckle 14 rotatably arranged on the contact frame 12 and engaged with the tripping buckle 13, a U-shaped pull rod 15 arranged between the handle 11 and the tripping buckle 13, a leakage release 16 arranged in the housing 10, and a tripping member 17 rotatably arranged in the housing 10 and linked with the leakage release 16, wherein the tripping member 17 moves with the top rod 161 of the leakage release 16 and contacts the lock buckle 14, and constitutes a linkage cooperation between the lock buckle 14 and the tripping member 17, and the housing A trip indicator 18 is slidably provided on the housing 10, an indicating hole 101 is provided on the housing 10 corresponding to the trip indicator 18, a linkage piece 181 extending between the trip button 13 and the contact frame 12 is provided on the trip indicator 18, the trip button 13 has a convex block 131 matched with the linkage piece 181, the convex block 131 moves with the trip button 13 and abuts on one side of the linkage piece 181, and constitutes the linkage cooperation between the trip indicator 18 and the trip button 13, and a convex strip 121 is provided on the contact frame 12 to match the linkage piece 181, the convex strip 121 moves with the contact frame 12 and abuts on the other side of the linkage piece 181, and constitutes the linkage cooperation between the trip indicator 18 and the contact frame 12. A sliding groove 102 matched with the trip indicator 18 is provided on the housing 10, and the trip indicator 18 is slidably provided in the sliding groove 102. A sliding groove matched with the trip indicator is provided in the housing, so as to ensure that the trip indicator can slide reliably in the sliding groove, which is beneficial to improve the indication reliability of the trip indicator. An elastic arm 182 is provided on both sides of the trip indicator 18, and a limiting protrusion 103 matched with the elastic arm 182 is provided in the sliding groove 102. Two positioning grooves 104 are formed on both sides of the corresponding limiting protrusion 103 in the sliding groove 102, and the elastic arm 182 moves with the trip indicator 18 and switches back and forth between the two positioning grooves 104. The elastic arm of the trip indicator can reciprocate in the two positioning grooves, so as to ensure that the trip indicator can reliably move in the sliding groove, which is beneficial to improve the working reliability of the leakage fault indication mechanism.

[0016] like Figure 1 and 2As shown, the lock buckle 14 has a linkage part 141 extending toward the release member 17 at one end, and a load-bearing convex arc surface 142 matching with the release member 17 is arranged on the linkage part 141. The release member 17 has a driving part 171 matching with the linkage part 141 at one end, and a driving plane 172 matching with the load-bearing convex arc surface 142 is arranged on the driving part 171. The driving plane 172 moves with the release member 17 and contacts with the load-bearing convex arc surface 142. The release member pushes the linkage part of the lock buckle to move through the driving part, so that the release member can reliably push the lock buckle to move, thereby ensuring the transmission reliability of the release member and the lock buckle. The release member 17 has a positioning hole 173 at the other end, and a positioning shaft 105 is arranged in the housing 10. The positioning shaft 105 is inserted in the positioning hole 173 and constitutes a rotational connection cooperation between the release member 17 and the positioning shaft 105. The positioning hole of the release member is engaged with the positioning shaft in the housing, thereby facilitating the assembly of the release member and the housing, and making the assembly more convenient.

[0017] A trip indicator that matches the trip button and the contact bracket is arranged in the housing. The trip button and the contact bracket can drive the trip indicator respectively, so as to realize the working status indication of the trip indicator. During operation, the handle drives the trip button to engage with the lock button, and drives the contact bracket to perform the closing action. The convex strip of the contact bracket drives the trip indicator to move, so as to realize the closing indication of the trip indicator. When leakage occurs in the line, the leakage release drives the tripping part, the tripping part drives the lock button to move, the lock button and the trip button are unlocked, and the convex block on the trip button drives the trip indicator to move, so as to realize the leakage fault indication of the leakage circuit breaker. Therefore, the leakage fault indication mechanism of the leakage circuit breaker has the advantages of simple structure, stable and reliable performance, convenient assembly and accurate indication.

Claims

1. A leakage fault indication mechanism of a leakage circuit breaker, characterized in that: The invention comprises a housing, a handle rotatably arranged on the housing, a contact frame rotatably arranged in the housing, a trip button rotatably arranged on the contact frame, a lock button rotatably arranged on the contact frame and engaged with the trip button, a U-shaped pull rod arranged between the handle and the trip button, a leakage release device arranged in the housing, and a tripping piece rotatably arranged in the housing and coordinated with the leakage release device, wherein the tripping piece moves with the top rod of the leakage release device and contacts the lock button, and forms a linkage cooperation between the lock button and the tripping piece, and a tripping finger is slidably arranged on the housing. An indicator member, an indicator hole is provided on the shell corresponding to the trip indicator member, the trip indicator member is provided with a linkage piece extending between the trip button and the contact frame, the trip button has a convex block matched with the linkage piece, the convex block moves with the trip button and abuts on one side of the linkage piece, and constitutes the linkage cooperation between the trip indicator and the trip button, the contact frame is provided with a convex strip matched with the linkage piece, the convex strip moves with the contact frame and abuts on the other side of the linkage piece, and constitutes the linkage cooperation between the trip indicator and the contact frame.

2. The leakage fault indication mechanism of the leakage circuit breaker according to claim 1, characterized in that: The housing is provided with a sliding groove matched with the trip indicator, and the trip indicator is slidably arranged in the sliding groove.

3. The leakage fault indication mechanism of the leakage circuit breaker according to claim 2, characterized in that: An elastic arm is respectively arranged on both sides of the trip indicator, a limiting protrusion matching with the elastic arm is arranged in the sliding groove, two positioning grooves are respectively formed on both sides of the corresponding limiting protrusion in the sliding groove, and the elastic arm moves with the trip indicator and switches back and forth between the two positioning grooves.

4. The leakage fault indication mechanism of the leakage circuit breaker according to claim 1 or 2, characterized in that: One end of the lock buckle has a linkage part extending toward the direction of the release member, and the linkage part is provided with a load-bearing raised arc surface cooperating with the release member. One end of the release member is provided with a driving part cooperating with the linkage part, and the driving part is provided with a driving plane cooperating with the load-bearing raised arc surface, and the driving plane moves with the release member and contacts the load-bearing raised arc surface.

5. The leakage fault indication mechanism of the leakage circuit breaker according to claim 4, characterized in that: A positioning hole is arranged at the other end of the release member, a positioning shaft is arranged in the shell, the positioning shaft is inserted into the positioning hole, and a rotation connection cooperation is formed between the release member and the positioning shaft.

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