Combined leakage protection circuit breaker

Abstract

The utility model discloses a combined electric leakage protection circuit breaker, and particularly relates to the technical field of electric leakage protection circuit breakers, the combined electric leakage protection circuit breaker comprises a first circuit breaker and a second circuit breaker, the first circuit breaker is arranged at one side of the second circuit breaker, and a connecting mechanism is arranged between the first circuit breaker and the second circuit breaker. The connecting mechanism comprises a first reinforcing plate arranged at the bottom of the first circuit breaker, a mounting strip is movably clamped in the first reinforcing plate, a connecting block is connected to one side of the first reinforcing plate through a hinge, the surface of the connecting block is in a hook shape, and a second reinforcing plate is arranged at the bottom of the second circuit breaker. A mounting groove is formed in the second reinforcing plate, and a connecting frame is arranged on one side of the second reinforcing plate. According to the utility model, the stability of the combined leakage protection circuit breaker after assembly can be enhanced, and rapid and accurate assembly and combination can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of leakage protection circuit breakers, and more specifically, to a combined leakage protection circuit breaker. Background Art

[0002] The leakage protection circuit breaker, once called the leakage circuit breaker, is a switching electrical appliance to prevent electric shock to the human body or electric leakage causing fire and explosion accidents in low-voltage circuits. Its function is to quickly cut off the power supply circuit when electric shock to the human body or equipment leakage occurs, thus avoiding harm to the human body and equipment.

[0003] When the existing leakage protection circuit breaker is in use, it is installed on the mounting rack in the control box and connected to the corresponding cables for use. However, when multiple leakage protection circuit breakers are used in combination, they cannot be spliced and assembled for use, which is not conducive to the synchronous installation and disassembly of multiple leakage protection circuit breakers, and there are certain limitations in use.

[0004] After retrieval, a Chinese patent with the authorization announcement number CN218274465U discloses a spliced and combined leakage protection circuit breaker. Through the provided connection structure, the leakage protection circuit breakers can be spliced and combined for use, ensuring the stability of the leakage protection circuit breaker after splicing. By using a rotary connecting plate, when the leakage protection circuit breaker is used alone, it can be stored and does not occupy extra space. Through the provided positioning parts, used in cooperation with the positioning holes, the accuracy of splicing the leakage protection circuit breaker can be ensured.

[0005] However, when this structure is actually in use, by rotating the connecting bolt into the threaded hole of the circuit breaker body and then using screws for fixation, this installation method is rather cumbersome during installation. An auxiliary tool, a screwdriver, is needed for installation, which is also time-consuming and laborious, affecting the use effect of the leakage protection circuit breaker. Summary of the Utility Model

[0006] In order to overcome the above-mentioned defects of the prior art, the present utility model provides a combined leakage protection circuit breaker to solve the problems raised in the above background art.

[0007] To achieve the above object, the present utility model provides the following technical solution:

[0008] A combined leakage protection circuit breaker, comprising a first circuit breaker and a second circuit breaker, the first circuit breaker is arranged on one side of the second circuit breaker, and a connection mechanism is arranged between the first circuit breaker and the second circuit breaker;

[0009] The connection mechanism includes a first reinforcement plate arranged at the bottom of the first circuit breaker. An installation strip is movably clamped inside the first reinforcement plate. One side of the first reinforcement plate is hinged to a connection block, and the surface of the connection block is in a hooked shape. A second reinforcement plate is arranged at the bottom of the second circuit breaker. An installation groove is formed inside the second reinforcement plate. A connection frame is arranged on one side of the second reinforcement plate. Two first springs are arranged on one side of the connection frame, and an extrusion plate is arranged on one side of each of the two first springs.

[0010] By adopting the above technical solutions: in order to strengthen the stability of the combined leakage protection circuit breaker after assembly and also achieve fast and accurate assembly.

[0011] As a further description of the above technical solutions: The installation strip is matched with the installation groove. The connection block is movably clamped with the connection frame. A second spring is arranged on one side of the installation strip. A plug-in plate is arranged on one side of the first circuit breaker. A bolt is arranged on one side of the plug-in plate and penetrates through the plug-in plate and extends into the first circuit breaker. An auxiliary mechanism is installed on the upper surface of the first circuit breaker. The auxiliary mechanism includes an auxiliary block arranged at the top of the first circuit breaker. A fixing groove is formed inside the auxiliary block, and an auxiliary rod is movably clamped inside the fixing groove.

[0012] By adopting the above technical solutions: in order to facilitate individual use and meet the requirements of modularization, easy disassembly and assembly.

[0013] As a further description of the above technical solutions: A fixing plate is arranged at the top of the second circuit breaker. A stabilizing plate is arranged on one side of the fixing plate. One end of the auxiliary rod is provided with a handle. A third spring is sleeved on the auxiliary rod. An anti-misoperation block is arranged on one side of the handle. A guiding frame is arranged on the surface of the first circuit breaker. A guiding block is arranged at the top of the second circuit breaker. The guiding frame is matched with the guiding block. Switches are arranged on both the first circuit breaker and the second circuit breaker, and test buttons are arranged on both the first circuit breaker and the second circuit breaker.

[0014] By adopting the above technical solutions: in order to ensure the smooth and safe transmission of current and also adopt standard interface dimensions and positioning structures to ensure the precise docking between components.

[0015] The technical effects and advantages of the present utility model:

[0016] By setting up the connection mechanism, compared with the prior art, the installation strip at the bottom of the first reinforcement plate is inserted into the installation groove opened on the surface of the second reinforcement plate, and then the connection block is inserted into the interior of the connection frame. While moving, the extrusion plate is extruded to move, thereby driving the first spring to deform and be extruded, so as to fix the connection block. At the same time, the guiding block at the top is also inserted into the interior of the guiding frame to play a guiding role, so that the first circuit breaker and the second circuit breaker are fitted together for preliminary fixation, and the overall stability and strength are also enhanced. The clamping method can be used to quickly assemble multiple leakage protection circuit breakers, improving the efficiency of installation and disassembly;

[0017] By setting up the auxiliary mechanism, compared with the prior art, pulling the handle drives the auxiliary rod to move. The auxiliary rod drives the third spring to be extruded and deformed, enabling the auxiliary rod to move inside the stabilizing plate and the fixing plate. Then the auxiliary rod is inserted into the fixing groove opened on the surface of the auxiliary block, and then the anti-misoperation block is inserted into the interior of the second circuit breaker for limiting to prevent misoperation and for fixation, thereby improving the use effect, further connecting and fixing the two circuit breakers, and ensuring the precise docking between components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2 It is a schematic diagram of the structure of the connection mechanism of the present utility model.

[0020] Figure 3 It is a schematic diagram of the structure when the first circuit breaker of the present utility model is used alone.

[0021] Figure 4 It is a schematic diagram of the structure of the auxiliary mechanism of the present utility model.

[0022] Figure 5 It is a schematic diagram of the working state of the present utility model.

[0023] Reference numerals are: 1, first circuit breaker; 2, second circuit breaker; 3, first reinforcement plate; 4, installation strip; 5, connection block; 6, second reinforcement plate; 7, connection frame; 8, first spring; 9, extrusion plate; 10, second spring; 11, pin plate; 12, bolt; 13, auxiliary block; 14, auxiliary rod; 15, fixing plate; 16, stabilizing plate; 17, handle; 18, third spring; 19, anti-misoperation block; 20, guiding frame; 21, guiding block; 22, switch; 23, test button. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] The embodiments of the present application disclose a combined leakage protection circuit breaker as Figures 1-5 shown, which includes a first circuit breaker 1 and a second circuit breaker 2. The first circuit breaker 1 is arranged on one side of the second circuit breaker 2, and a connecting mechanism is arranged between the first circuit breaker 1 and the second circuit breaker 2;

[0026] The connecting mechanism includes a first reinforcing plate 3 arranged at the bottom of the first circuit breaker 1. An installation strip 4 is movably clamped inside the first reinforcing plate 3. A connecting block 5 is hinged to one side of the first reinforcing plate 3. The surface of the connecting block 5 is in a hook shape. A second reinforcing plate 6 is arranged at the bottom of the second circuit breaker 2. An installation groove is opened inside the second reinforcing plate 6. A connecting frame 7 is arranged on one side of the second reinforcing plate 6. Two first springs 8 are arranged on one side of the connecting frame 7. A pressing plate 9 is arranged on one side of each of the two first springs 8. First, insert the installation strip 4 at the bottom of the first reinforcing plate 3 into the installation groove opened on the surface of the second reinforcing plate 6, and then insert the connecting block 5 into the inside of the connecting frame 7. While moving, the pressing plate 9 is squeezed to move, so as to drive the first spring 8 to deform and be squeezed, thereby fixing the connecting block 5. At the same time, the guiding block 21 at the top also inserts into the guiding frame 20 to play a guiding role, so that the first circuit breaker 1 and the second circuit breaker 2 are attached together for preliminary fixing.

[0027] Referring to Figures 2-3 as shown, the installation strip 4 matches the installation groove, the connecting block 5 is movably clamped with the connecting frame 7. A second spring 10 is arranged on one side of the installation strip 4. A plug-in plate 11 is arranged on one side of the first circuit breaker 1. A bolt 12 is arranged on one side of the plug-in plate 11. The bolt 12 penetrates through the plug-in plate 11 and extends into the first circuit breaker 1. An auxiliary mechanism is installed on the upper surface of the first circuit breaker 1. The auxiliary mechanism includes an auxiliary block 13 arranged at the top of the first circuit breaker 1. A fixing groove is opened inside the auxiliary block 13. An auxiliary rod 14 is movably clamped inside the fixing groove. A fixing plate 15 is arranged at the top of the second circuit breaker 2. A stabilizing plate 16 is arranged on one side of the fixing plate 15. When the first circuit breaker 1 is used alone, push the installation strip 4 into the first reinforcing plate 3, so as to squeeze the second spring 10 on one side of the installation strip 4 to deform. Then move the connecting block 5 towards the side close to the first reinforcing plate 3. Then insert the plug-in plate 11 into one side of the connecting block 5, and then fix and connect it through the bolt 12.

[0028] Referring toFigures 4-5 As shown, a handle 17 is provided at one end of the auxiliary rod 14. A third spring 18 is sleeved on the auxiliary rod 14. An anti-misoperation block 19 is provided on one side of the handle 17. A guiding frame 20 is provided on the surface of the first circuit breaker 1. A guiding block 21 is provided at the top of the second circuit breaker 2. The guiding frame 20 matches the guiding block 21. Switches 22 are provided on both the first circuit breaker 1 and the second circuit breaker 2, and test buttons 23 are provided on both the first circuit breaker 1 and the second circuit breaker 2. Pull the handle 17 to drive the auxiliary rod 14 to move. The auxiliary rod 14 drives the third spring 18 to be squeezed and deformed, so that the auxiliary rod 14 moves inside the stabilizing plate 16 and the fixing plate 15. Then insert the auxiliary rod 14 into the fixing groove formed on the surface of the auxiliary block 13. Then insert the anti-misoperation block 19 into the inside of the second circuit breaker 2 for limiting to prevent misoperation and fix it, thereby improving the use effect, so as to further connect and fix the two circuit breakers. The multiple leakage protection circuit breakers can be quickly assembled by means of clamping, improving the installation and disassembly efficiency. When in use, turn on the switch 22 and then conduct a preliminary test through the test button 23.

[0029] The working principle of the present utility model:

[0030] The present utility model patent mainly designs a combined leakage protection circuit breaker. When the device is in use, first insert the installation strip 4 at the bottom of the first reinforcement plate 3 into the installation groove formed on the surface of the second reinforcement plate 6. Then insert the connection block 5 into the inside of the connection frame 7. While moving, squeeze the extrusion plate 9 to move, thereby driving the first spring 8 to be deformed and squeezed, so as to fix the connection block 5. At the same time, the guiding block 21 at the top also inserts into the inside of the guiding frame 20 to play a guiding role, so that the first circuit breaker 1 and the second circuit breaker 2 are fitted together for preliminary fixation;

[0031] At the same time, pull the handle 17 to drive the auxiliary rod 14 to move. The auxiliary rod 14 drives the third spring 18 to be squeezed and deformed, so that the auxiliary rod 14 moves inside the stabilizing plate 16 and the fixing plate 15. Then insert the auxiliary rod 14 into the fixing groove formed on the surface of the auxiliary block 13. Then insert the anti-misoperation block 19 into the inside of the second circuit breaker 2 for limiting to prevent misoperation and fix it, thereby improving the use effect, so as to further connect and fix the two circuit breakers. The multiple leakage protection circuit breakers can be quickly assembled by means of clamping, improving the installation and disassembly efficiency;

[0032] At the same time, when the first circuit breaker 1 is used alone, push the installation strip 4 towards the inside of the first reinforcement plate 3, thereby squeezing the second spring 10 on one side of the installation strip 4 to be deformed. Then move the connection block 5 towards the side close to the first reinforcement plate 3. Then insert the pin plate 11 into one side of the connection block 5, and then fix and connect it through the bolt 12;

[0033] After installation, when in use, turn on the switch 22 and then conduct a preliminary test through the test button 23. Based on the detection and control of the zero-sequence current transformer and the leakage trip, the zero-sequence current transformer detects the instantaneous values of the currents in the phase wire and the neutral wire in the circuit. When the leakage current exceeds the preset value, the leakage trip will actuate, triggering the circuit breaker to cut off the circuit and directly operating the main switch through the trip.

[0034] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. The combined leakage protection circuit breaker includes a first circuit breaker (1) and a second circuit breaker (2), and is characterized in that: The first circuit breaker (1) is arranged on one side of the second circuit breaker (2), and a connecting mechanism is arranged between the first circuit breaker (1) and the second circuit breaker (2); The connecting mechanism includes a first reinforcing plate (3) arranged at the bottom of the first circuit breaker (1). An installation strip (4) is movably clamped inside the first reinforcing plate (3). One side of the first reinforcing plate (3) is hinged to a connecting block (5). The surface of the connecting block (5) is in a hooked shape. A second reinforcing plate (6) is arranged at the bottom of the second circuit breaker (2). An installation groove is formed inside the second reinforcing plate (6). A connecting frame (7) is arranged on one side of the second reinforcing plate (6). Two first springs (8) are arranged on one side of the connecting frame (7). A pressing plate (9) is arranged on one side of each of the two first springs (8).

2. The combined leakage protection circuit breaker according to claim 1, wherein: The installation strip (4) is matched with the installation groove. The connecting block (5) is movably clamped with the connecting frame (7). A second spring (10) is arranged on one side of the installation strip (4). A plug-in plate (11) is arranged on one side of the first circuit breaker (1). A bolt (12) is arranged on one side of the plug-in plate (11). The bolt (12) penetrates through the plug-in plate (11) and extends into the first circuit breaker (1).

3. The combined leakage protection circuit breaker according to claim 1, characterized in that: An auxiliary mechanism is installed on the upper surface of the first circuit breaker (1). The auxiliary mechanism includes an auxiliary block (13) arranged at the top of the first circuit breaker (1). A fixing groove is formed inside the auxiliary block (13). An auxiliary rod (14) is movably clamped inside the fixing groove.

4. The combined leakage protection circuit breaker according to claim 1, characterized in that: A fixing plate (15) is arranged at the top of the second circuit breaker (2). A stabilizing plate (16) is arranged on one side of the fixing plate (15).

5. The combined leakage protection circuit breaker according to claim 3, wherein: One end of the auxiliary rod (14) is provided with a handle (17). A third spring (18) is sleeved on the auxiliary rod (14). An anti-misoperation block (19) is arranged on one side of the handle (17).

6. The combined leakage protection circuit breaker according to claim 1, wherein: A guiding frame (20) is arranged on the surface of the first circuit breaker (1). A guiding block (21) is arranged at the top of the second circuit breaker (2). The guiding frame (20) is matched with the guiding block (21).

7. The combined leakage protection circuit breaker according to claim 1, wherein: Switches (22) are arranged on both the first circuit breaker (1) and the second circuit breaker (2), and test buttons (23) are arranged on both the first circuit breaker (1) and the second circuit breaker (2).

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