Combined residual-current circuit breaker

Abstract

The utility model relates to the technical field of combined residual-current circuit breakers, in particular to a combined residual-current circuit breaker, which comprises circuit breaker main bodies, adjacent circuit breaker main bodies are connected to form a combined residual-current circuit breaker assembly, a mounting plate is arranged on the rear side of each circuit breaker main body, and a plurality of connecting mechanisms are arranged between each mounting plate and the corresponding circuit breaker main body. According to the utility model, the plurality of circuit breaker main bodies can be conveniently and rapidly connected and fixed in advance and then installed and fixed on the installation plate together, so that the connection stability between the circuit breaker main bodies is improved, and the installation of the circuit breaker main bodies is facilitated. And when a plurality of circuit breaker main bodies are mounted on the mounting plate, more convenience and time saving can be realized, the working efficiency of mounting operation is effectively improved, and the handle is shielded and protected through the arranged protection plate, so that the handle is prevented from being mistakenly touched when the handle is not required to be used.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of combined residual current circuit breaker, specifically is a combined residual current circuit breaker. BACKGROUND

[0002] The combined residual current circuit breaker is an electrical device that combines the functions of a combined switch and a residual current circuit breaker. It not only has the function of a normal switch, but also automatically cuts off the circuit when detecting a leakage, thereby providing additional safety protection.

[0003] In the prior art, such as the combined residual current circuit breaker disclosed in patent application number "CN202321979587.6", the application clamps several circuit breakers on an insulating shell. The circuit breakers are easy to disassemble and assemble, and are isolated from each other by a magnetic shielding plate to avoid mutual interference. The connection between the circuit breakers and the fire zero line can be achieved using a wire, making the use convenient.

[0004] However, in the above-mentioned patent application, when connecting several circuit breakers on the insulating shell, it is necessary to clamp them one by one on the insulating shell, which is relatively troublesome to operate and has low installation efficiency. Moreover, it cannot guarantee the stability of the connection between the multiple circuit breakers, affecting the normal use of the combined residual current circuit breaker. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a combined residual current circuit breaker to solve the problems raised in the background art.

[0006] The utility model can achieve the above-mentioned purposes through the following technical solutions:

[0007] A combined residual current circuit breaker includes a circuit breaker body, adjacent circuit breaker bodies are connected to form a combined residual current circuit breaker assembly, the circuit breaker body rear side is provided with a mounting plate, a plurality of connecting mechanisms are arranged between the mounting plate and the circuit breaker body, a handle is installed on the outer wall of each circuit breaker body, and a protection mechanism is arranged on the outer wall of each circuit breaker body.

[0008] The connecting mechanism includes a connecting plate one, a connecting plate two, and two L-shaped slots. The connecting plate one and the connecting plate two are fixedly connected to the back surfaces of the two circuit breaker bodies, respectively. The two L-shaped slots are both arranged on the outer wall of the mounting plate, and an L-shaped plug is inserted into each L-shaped slot. One L-shaped plug is fixedly connected to the connecting plate one, and the other L-shaped plug is fixedly connected to the connecting plate two.

[0009] Preferably, one outer side wall of the connecting plate is provided with an insertion block, one end of the insertion block is fixedly connected with the second connecting plate, an outer side wall of the insertion block is rotationally connected with a connecting shaft, a distal end of the connecting shaft is fixedly connected with a circular plate, and two limiting insertion rods are inserted into an outer side wall of the circular plate.

[0010] Preferably, two fixing holes are formed in the outer side wall of the insertion block, the fixing holes are matched with the limiting insertion rods, and one end of each of the two limiting insertion rods is fixedly connected with a pull plate.

[0011] Preferably, a baffle is fixedly connected to an outer wall of the connecting shaft, a sliding rod is fixedly installed on each of upper and lower outer side walls of the baffle, the limiting insertion rods are slidably connected with the sliding rods, and a supporting spring is sleeved on an outer portion of the sliding rod.

[0012] Preferably, a long plate is rotationally connected to an outer side wall of the mounting plate through a shaft rod, two connecting rods are fixedly connected to one end of the long plate, a telescopic rod is inserted into each of the two connecting rods, and a reset spring is installed between one end of the telescopic rod and an inner wall of the connecting rod.

[0013] One end of each of the two telescopic rods is fixedly connected with an L-shaped clamping plate, a U-shaped connecting plate is fixedly installed on the outer side wall of the mounting plate close to one end of the L-shaped clamping plate, a fixed block is fixedly connected to an inner wall of the L-shaped clamping plate, a fixed groove is formed in an outer side wall of the fixed block in a penetrating mode, and the fixed groove is matched with the fixed block.

[0014] Preferably, the protection mechanism comprises two L-shaped connecting blocks, a horizontal shaft is rotationally connected between the two L-shaped connecting blocks, a protection plate is fixedly connected to an outer wall of the horizontal shaft and located between the two L-shaped connecting blocks, and limiting tension springs are sleeved on an outer portion of the horizontal shaft and located close to both sides of the protection plate.

[0015] Preferably, a movable groove is formed in an outer side wall of the protection plate, a buffer plate is inserted into the movable groove, and a plurality of buffer springs are installed between an inner wall of the buffer plate and an inner wall of the movable groove.

[0016] A limiting block is fixedly connected to an outer side wall of the circuit breaker body close to one end of the protection plate, and one end of the limiting block is matched.

[0017] The utility model discloses the beneficial effect that:

[0018] 1. The utility model discloses a connecting plate one and connecting plate two are set up, cooperate baffle, support spring and spacing plug rod, make baffle resist one side, can limit the position between connecting plate one and connecting plate two, make connecting plate one and connecting plate two connect together to fix two circuit breaker main bodies, and the same reason can fix a plurality of circuit breaker main bodies, be convenient for the connection assembly of a plurality of circuit breaker main bodies, guarantee the connection stability between a plurality of circuit breaker main bodies, the each L shape plugboard that connects on connecting plate one and connecting plate two is inserted into each L shape insertion slot on mounting panel respectively, rotates long board and L shape card board again, make long board and L shape card board be in horizontal state, press down and fix to each connecting plate one and connecting plate two, can fix a plurality of circuit breaker main bodies together and install on mounting panel through above-mentioned operation, can conveniently fix a plurality of circuit breaker main bodies in advance and install together on mounting panel, not only improve the connection stability between each circuit breaker main body, also make when installing a plurality of circuit breaker main bodies on mounting panel, do not need to install individually in proper order, make installation operation can be more convenient and time-saving, effectively improve the work efficiency of installation operation.

[0019] 2. The utility model discloses a protective plate is shielded to handle, avoids when not needing using handle, to handle is mistaken to touch, influences the normal operation of combined residual-current circuit breaker, and when the impact force of external environment acts on the protective plate, can pass through buffer and buffer spring elastic force buffering, make buffer to the outside movement of movable groove to initial position, thereby can buffer the impact of external environment, improve the protection effect of protective plate to handle. DRAWINGS

[0020] In order to make the technical scheme of the embodiments of the utility model or the prior art clearer, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, other drawings can be obtained by the drawings for the ordinary skill in the art without creative labor;

[0021] Figure 1 It is the whole structure schematic diagram of the utility model;

[0022] Figure 2 It is another angle structure schematic diagram of the utility model;

[0023] Figure 3 It is the structure schematic diagram of circuit breaker main body, connecting plate one and connecting plate two in the utility model;

[0024] Figure 4 It is the sectional view of connecting plate one in the utility model;

[0025] Figure 5 It is the structure schematic diagram of mounting panel and long board in the utility model;

[0026] Figure 6 This is a cross-sectional view of the U-shaped connecting plate in this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the circuit breaker body and the handle of this utility model;

[0028] Figure 8 This is a cross-sectional view of the buffer plate in this utility model.

[0029] The attached figures are labeled as follows:

[0030] 1. Circuit breaker body; 2. Mounting plate; 3. Handle; 4. Connecting plate one; 5. Connecting plate two; 6. Insert block; 7. Connecting shaft; 8. Baffle; 9. Round plate; 10. Limiting insert rod; 11. Sliding rod; 12. L-shaped clamping plate; 13. Long plate; 14. Connecting rod; 15. Telescopic rod; 16. U-shaped connecting plate; 17. Fixing block; 18. L-shaped connecting block; 19. Horizontal shaft; 20. Limiting tension spring; 21. Protective plate; 22. Buffer plate; 23. Limiting block; 24. Pull plate; 25. L-shaped slot; 26. L-shaped insert plate. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] A combined residual current circuit breaker, such as Figures 1-8 As shown, the circuit breaker includes a circuit breaker body 1. Adjacent circuit breaker bodies 1 are connected to form a combined residual current circuit breaker assembly. A mounting plate 2 is provided on the rear side of the circuit breaker body 1. Several connecting mechanisms are provided between the mounting plate 2 and the circuit breaker body 1. Handles 3 are installed on the outer walls of several circuit breaker bodies 1. Protective mechanisms are provided on the outer walls of several circuit breaker bodies 1. The connecting mechanisms include a first connecting plate 4, a second connecting plate 5, and two L-shaped slots 25. The first connecting plate 4 and the second connecting plate 5 are fixedly connected to the back of the two circuit breaker bodies 1. The two L-shaped slots 25 are both opened on the outer walls of the mounting plate 2. An L-shaped insert plate 26 is inserted into each of the two L-shaped slots 25. One L-shaped insert plate 26 is fixedly connected to the first connecting plate 4, and the other L-shaped insert plate 26 is fixedly connected to the second connecting plate 5.

[0033] The outer side wall of the connecting plate one 4 is provided with an insertion block 6, one end of which is fixedly connected with the connecting plate two 5. The outer side wall of the insertion block 6 is rotatably connected with a connecting shaft 7. One end of the connecting shaft 7 away from the insertion block 6 is fixedly connected with a circular plate 9. Two limiting insertion rods 10 are inserted into the outer side wall of the circular plate 9. Two fixed holes are formed in the outer side wall of the insertion block 6, and the fixed holes are matched with the limiting insertion rods 10. One end of the two limiting insertion rods 10 is fixedly connected with a pull plate 24.

[0034] The outer wall of the connecting shaft 7 is fixedly connected with a baffle 8. The upper and lower outer side walls of the baffle 8 are both fixedly installed with sliding rods 11, and the limiting insertion rods 10 are slidably connected with the sliding rods 11. The sliding rods 11 are externally sleeved with supporting springs. Under the action of the elastic force of the two supporting springs, the two limiting insertion rods 10 can be moved, so that one end of each of the two limiting insertion rods 10 is inserted into a fixed hole, the position of the baffle 8 is fixed, and the baffle 8 resists one side.

[0035] The outer side wall of the mounting plate 2 is rotatably connected with a long plate 13 through a shaft rod. One end of the long plate 13 is fixedly connected with two connecting rods 14. The two connecting rods 14 are both internally provided with telescopic rods 15. One end of each of the telescopic rods 15 is installed with a return spring between the inner wall of the connecting rod 14. One end of each of the two telescopic rods 15 is fixedly connected with an L-shaped clamping plate 12. The outer side wall of the mounting plate 2 is fixedly installed with a U-shaped connecting plate 16 near one end of the L-shaped clamping plate 12. The inner wall of the L-shaped clamping plate 12 is fixedly connected with a fixed block 17. A fixed groove is formed in the outer side wall of the fixed block 17, and the fixed groove is matched with the fixed block 17. The long plate 13 and the L-shaped clamping plate 12 are rotated to a horizontal state, so as to press and fix each of the connecting plate one 4 and the connecting plate two 5.

[0036] In use, first, the pull plate 24 is moved away from the circular plate 9, the two limiting insertion rods 10 are slid along the two sliding rods 11, the supporting springs are compressed, and then the baffle 8 in the connecting mechanism is rotated to a vertical state through the connecting shaft 7, so that the baffle 8 is completely located at one side of the insertion block 6. Then one of the circuit breaker bodies 1 is sleeved with the connecting plate one 4 on the other circuit breaker body 1, and the connecting plate one 4 is tightly attached to the connecting plate two 5. Similarly, the baffle 8 is rotated to a horizontal state, the pull plate 24 is loosened, and the two limiting insertion rods 10 are moved under the action of the elastic force of the two supporting springs, so that one end of each of the two limiting insertion rods 10 is inserted into a fixed hole, the position of the baffle 8 is fixed, the baffle 8 resists one side, the positions of the connecting plate one 4 and the connecting plate two 5 are limited, and the connecting plate one 4 and the connecting plate two 5 are connected together, so as to connect and fix the two circuit breaker bodies 1. Similarly, multiple circuit breaker bodies 1 can be connected and fixed, which is convenient for the connection and assembly of multiple circuit breaker bodies 1.

[0037] After the connection is assembled, each L-shaped plug plate 26 connected to the first connecting plate 4 and the second connecting plate 5 is inserted into each L-shaped slot 25 on the mounting plate 2, then the long plate 13 is rotated, and the L-shaped clamping plate 12 is pulled away from the long plate 13, so that the rear half of the L-shaped clamping plate 12 is first clamped into the U-shaped connecting plate 16, then the L-shaped clamping plate 12 is loosened, and under the action of the elastic force of the reset spring, the L-shaped clamping plate 12 can move towards the long plate 13, and the fixing block 17 is clamped into the fixing groove, thereby completing the connection and fixation between the L-shaped clamping plate 12 and the U-shaped connecting plate 16. At this time, the long plate 13 and the L-shaped clamping plate 12 are in a horizontal state, and each first connecting plate 4 and second connecting plate 5 can be pressed and fixed, so that each first connecting plate 4 and second connecting plate 5 can be connected and fixed on the mounting plate 2, thereby completing the installation and fixation of each circuit breaker body 1.

[0038] Through the above operation, a plurality of circuit breaker bodies 1 can be conveniently connected and fixed together and installed and fixed on the mounting plate 2, which not only improves the connection stability between each circuit breaker body 1, but also makes it unnecessary to install each circuit breaker body 1 one by one when installing a plurality of circuit breaker bodies 1 on the mounting plate 2, so that the installation operation can be more convenient and time-saving, and the working efficiency of the installation operation is effectively improved.

[0039] The protection mechanism comprises two L-shaped connecting blocks 18, a horizontal shaft 19 rotatably connected between the two L-shaped connecting blocks 18, a protection plate 21 fixedly connected to the outer wall of the horizontal shaft 19 and located between the two L-shaped connecting blocks 18, a limiting tension spring 20 sleeved on the outer portion of the horizontal shaft 19 and located close to both sides of the protection plate 21, a movable groove formed in the outer side wall of the protection plate 21, a buffer plate 22 inserted into the movable groove, and a plurality of buffer springs installed between the inner wall of the buffer plate 22 and the inner wall of the movable groove. A limiting block 23 is fixedly connected to the outer side wall of the circuit breaker body 1 and located close to one end of the protection plate 21, and one end of the limiting block 23 is matched.

[0040] Specifically, the handle 3 is shielded by the protection plate 21, which avoids accidental touch of the handle 3 when it is not needed, thereby affecting the normal operation of the combined residual current circuit breaker. When the impact force of the external environment acts on the protection plate 21, the buffer plate 22 can receive the impact force and move towards the inside of the movable groove, so that each buffer spring is compressed, and then under the elastic force of each buffer spring, the buffer plate 22 can move to the initial position outside the movable groove, thereby buffering the impact force of the external environment and improving the protection effect of the protection plate 21 on the handle 3. When the handle 3 is needed, the protection plate 21 can be rotated about the horizontal shaft 19 installed between the two L-shaped connecting blocks 18 as the center axis, so that one end of the protection plate 21 moves out of the limiting block 23, thereby removing the shielding of the handle 3. Subsequently, under the elastic force of the limiting tension spring 20, the protection plate 21 can return to the initial position.

[0041] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A combination residual circuit breaker comprising a breaker body (1), adjacent breaker bodies (1) being connected to form a combination residual circuit breaker assembly, characterised in that, The back side of the circuit breaker body (1) is provided with a mounting plate (2), a plurality of connecting mechanisms are arranged between the mounting plate (2) and the circuit breaker body (1), a plurality of handles (3) are arranged on the outer side walls of the circuit breaker body (1), and a plurality of protection mechanisms are arranged on the outer side walls of the circuit breaker body (1); The connecting mechanism comprises a connecting plate one (4), a connecting plate two (5) and two L-shaped slots (25), the connecting plate one (4) and the connecting plate two (5) are fixedly connected at the back positions of the two circuit breaker bodies (1), the two L-shaped slots (25) are formed in the outer side walls of the mounting plate (2), and the two L-shaped slots (25) are internally provided with L-shaped plug-in plates (26), one of which is fixedly connected with the connecting plate one (4), and the other is fixedly connected with the connecting plate two (5).

2. The combination ground fault circuit interrupter of claim 1, wherein, The outer side wall of the connecting plate one (4) is provided with an insertion block (6), one end of which is fixedly connected with the connecting plate two (5), the outer side wall of the insertion block (6) is rotatably connected with a connecting shaft (7), the end of the connecting shaft (7) away from the insertion block (6) is fixedly connected with a circular plate (9), and the outer side wall of the circular plate (9) is provided with two limiting insertion rods (10).

3. A combination residual current circuit breaker according to claim 2, characterized in that The outer side wall of the insertion block (6) is provided with two fixing holes, and the fixing holes are matched with the limiting insertion rods (10), and one end of the two limiting insertion rods (10) is fixedly connected with a pull plate (24).

4. The combination residual circuit breaker of claim 3 wherein, The outer wall of the connecting shaft (7) is fixedly connected with a baffle (8), the upper and lower outer side walls of the baffle (8) are fixedly installed with slide rods (11), the limiting insertion rods (10) are slidably connected with the slide rods (11), and the slide rods (11) are externally provided with supporting springs.

5. A combination residual current circuit breaker according to claim 4, characterized in that The outer side wall of the mounting plate (2) is rotatably connected with a long plate (13) through a shaft rod, one end of the long plate (13) is fixedly connected with two connecting rods (14), the two connecting rods (14) are internally provided with telescopic rods (15), and the one end of the telescopic rods (15) is connected with the inner wall of the connecting rod (14) through a reset spring; One end of the two telescopic rods (15) is fixedly connected with an L-shaped clamping plate (12), the outer side wall of the mounting plate (2) is fixedly installed with a U-shaped connecting plate (16) near one end of the L-shaped clamping plate (12), the inner wall of the L-shaped clamping plate (12) is fixedly connected with a fixed block (17), the outer side wall of the fixed block (17) is provided with a fixed groove, and the fixed groove is matched with the fixed block (17).

6. The combination ground fault circuit interrupter of claim 1, wherein, The protection mechanism comprises two L-shaped link blocks (18), a horizontal shaft (19) is rotatably connected between the two L-shaped link blocks (18), a protection plate (21) is fixedly connected to the outer wall of the horizontal shaft (19) between the two L-shaped link blocks (18), and limiting tension springs (20) are sleeved on the outer part of the horizontal shaft (19) and near both sides of the protection plate (21).

7. A combination residual current circuit breaker according to claim 6, characterized in that The outer side wall of the protection plate (21) is provided with a movable slot, and the movable slot is internally provided with a buffer plate (22), and a plurality of buffer springs are arranged between the inner wall of the buffer plate (22) and the inner wall of the movable slot; The outer wall of the circuit breaker body (1) is fixedly connected with a limiting block (23) at a position close to one end of the protective plate (21), and one end of the limiting block (23) is matched.

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