A fast-break residual current circuit breaker

Abstract

The utility model relates to residual current protection circuit breaker technical field, concretely is a kind of quick breaking residual current protection circuit breaker, including first circuit breaker and second circuit breaker, the side of first circuit breaker and second circuit breaker is fixedly connected with mounting block, the other side of first circuit breaker and second circuit breaker is fixedly connected with fixed box, the both sides of mounting block are slidably connected with guide rod, the side of two guide rods is fixedly connected with embedded block, first spring is fixedly connected between two embedded blocks and mounting block, the utility model is matched with embedded block and first spring, realize the quick clamping assembly between circuit breaker, it is combined with bolt locking structure simultaneously, ensure each residual current protection circuit breaker firm connection, avoid its loose drop, the design improves installation stability, guarantees circuit breaker safe and reliable operation, effectively exerts its leakage protection and circuit protection function.

Description

Technical Field

[0001] This utility model relates to the technical field of residual current protection circuit breakers, specifically a fast-disconnecting residual current protection circuit breaker. Background Technology

[0002] A residual current circuit breaker is a protective device that can detect and disconnect circuits with leakage current. It can accurately detect leakage in the circuit and immediately cut off the power supply once the leakage exceeds the safe range, effectively preventing the risk of electric shock and damage to electrical appliances.

[0003] In actual use, multiple residual current circuit breakers are usually fixed to the rail by snap-fitting and are installed separately without any connection or fixing measures between them. This makes the installation of residual current circuit breakers unstable and prone to loosening and detachment, causing safety hazards and affecting the stability of the residual current circuit breaker installation. Utility Model Content

[0004] The purpose of this invention is to provide a fast-disconnecting residual current protection circuit breaker to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A fast-disconnecting residual current protection circuit breaker includes a first circuit breaker and a second circuit breaker. A mounting block is fixedly connected to one side of both the first and second circuit breakers, and a fixing box is fixedly connected to the other side of both the first and second circuit breakers. Guide rods are slidably connected to both sides of the mounting block, and an embedded block is fixedly connected to one side of each of the two guide rods. A first spring is fixedly connected between each of the two embedded blocks and the mounting block.

[0007] The fixed box has a through-hole adapter slot inside. The mounting block and the embedding block are adapted to the adapter slot. A U-shaped plate is fixedly connected to one side of the fixed box. An installation slot is opened on one side of the U-shaped plate. A locking block is fixedly connected to one end of the mounting block. One side of the mounting block and the embedding block are locked inside the adapter slot. Both the first circuit breaker and the second circuit breaker are equipped with opening and closing operation handles.

[0008] Preferably, the mounting groove has a through circular groove inside, the upper side of the locking block is engaged with a pin, the lower side of the pin passes through the locking block and extends to the lower side of the locking block, one side of the locking block is engaged inside the mounting groove, and one side of the pin is engaged inside the circular groove.

[0009] Preferably, one end of the second circuit breaker is fixedly connected to a U-shaped support plate, and a double-ended lead screw is rotatably connected inside the U-shaped support plate. Two lead screw sleeves adapted to the double-ended lead screw are provided on the double-ended lead screw, and a mounting clamp is fixedly connected to one side of each of the two lead screw sleeves.

[0010] Preferably, the U-shaped support plate has a limiting vertical rod that is parallel to the double-ended lead screw fixedly connected inside. The upper side of the double-ended lead screw passes through the U-shaped support plate and extends to the upper side of the U-shaped support plate. An operating handwheel is fixedly connected to the upper side of the double-ended lead screw.

[0011] Preferably, each of the two opening and closing operating handles has a through-hole embedded groove on one side, and a threaded rod is engaged inside each of the two embedded grooves. A round rod is slidably connected to one side of each of the two threaded rods. The two threaded rods are located on both sides of the round rods, and a threaded cap adapted to the threaded rod is threadedly connected to each of the two threaded rods. A pressure plate is fixedly connected to the outer surface of the round rod.

[0012] Preferably, both sides of the first circuit breaker and the second circuit breaker are provided with grooves, and heat sinks are arrayed inside the grooves.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model achieves quick snap-fit ​​assembly between circuit breakers through the cooperation of the embedded block and the first spring. At the same time, combined with the pin locking structure, it ensures that each residual current protection circuit breaker is firmly connected and prevents it from loosening and falling off. This design improves installation stability, ensures the safe and reliable operation of the circuit breaker, and effectively exerts its leakage protection and circuit protection functions.

[0015] 2. This utility model utilizes a circular rod, a threaded rod, and a pressure plate structure to link the opening and closing operating handles of two circuit breakers, achieving synchronous and rapid disconnection, thereby improving the response speed and operating efficiency of the circuit breakers. Subsequently, a double-ended screw drives the mounting plate to firmly clamp the guide rail, enhancing the stability and safety of the overall mechanism, preventing loosening and displacement, and ensuring the long-term reliable operation of the residual current protection circuit breaker. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 A structural diagram of the mounting block and fixing box;

[0019] Figure 3 This is a utility model Figure 2 A schematic diagram of the structure of the guide rod, the embedded block, and the first spring;

[0020] Figure 4 This is a utility model Figure 2 Installation diagram of the lead screw sleeve and mounting clamp;

[0021] Figure 5 This is a utility model Figure 2 Structural diagrams of round rods and threaded rods;

[0022] The attached figures are labeled as follows:

[0023] 1. First circuit breaker; 2. Second circuit breaker; 3. Mounting block; 4. Guide rod; 5. Embedded block; 6. First spring; 7. Fixing box; 8. Threaded cover; 9. Adaptor slot; 10. U-shaped plate; 11. Mounting groove; 12. Round groove; 13. Groove; 14. Heat sink; 15. U-shaped support plate; 16. Double-ended lead screw; 17. Operating handwheel; 18. Lead screw sleeve; 19. Mounting clamp; 20. Limiting vertical rod; 21. Opening and closing operating handle; 22. Embedded groove; 23. Threaded rod; 24. Round rod; 25. Pressure plate; 66. Locking block; 88. Pin. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 5 As shown, a fast-interrupting residual current protection circuit breaker includes a first circuit breaker 1 and a second circuit breaker 2. A mounting block 3 is fixedly connected to one side of both the first circuit breaker 1 and the second circuit breaker 2, and a fixing box 7 is fixedly connected to the other side of both the first circuit breaker 1 and the second circuit breaker 2. Guide rods 4 are slidably connected to both sides of the mounting block 3, and an embedded block 5 is fixedly connected to one side of each of the two guide rods 4. A first spring 6 is fixedly connected between each of the two embedded blocks 5 and the mounting block 3.

[0026] The fixed box 7 has a through-hole adapter slot 9 inside. The mounting block 3 and the embedded block 5 are adapted to the adapter slot 9. A U-shaped plate 10 is fixedly connected to one side of the fixed box 7. An installation groove 11 is opened on one side of the U-shaped plate 10. A locking block 66 is fixedly connected to one end of the mounting block 3. The mounting block 3 and the embedded block 5 are locked inside the adapter slot 9. The first circuit breaker 1 and the second circuit breaker 2 are both equipped with opening and closing operation handles 21. By pressing the two elastic embedded blocks 5 from the fixed box 7, the two embedded blocks 5 can be retracted, which can release the restriction on the embedded blocks 5. Then, the second circuit breaker 2 at the mounting block 3 can be moved to make the second circuit breaker 2 easy to remove, which improves the installation and removal efficiency of each residual current protection circuit breaker and makes it convenient to use.

[0027] The mounting slot 11 has a through circular groove 12. The upper side of the locking block 66 is engaged with a pin 88. The lower side of the pin 88 passes through the locking block 66 and extends to the lower side of the locking block 66. One side of the locking block 66 is engaged inside the mounting slot 11, and one side of the pin 88 is engaged inside the circular groove 12. The pin 88 is then pulled out to release the circuit breaker's limit, so that the circuit breaker can be disassembled.

[0028] A U-shaped support plate 15 is fixedly connected to one end of the second circuit breaker 2. A double-ended lead screw 16 is rotatably connected inside the U-shaped support plate 15. Two lead screw sleeves 18 adapted to the double-ended lead screw 16 are provided on the double-ended lead screw 16. A mounting clamp 19 is fixedly connected to one side of each of the two lead screw sleeves 18.

[0029] The U-shaped support plate 15 is internally fixedly connected to a limiting vertical rod 20 parallel to the double-ended lead screw 16. The limiting vertical rod 20 can guide the movement trajectory of the two lead screw sleeves 18, allowing the two lead screw sleeves 18 to drive the mounting clamps 19 to be stably clamped onto the guide rail, ensuring the stability of the circuit breaker during installation. The upper side of the double-ended lead screw 16 passes through the U-shaped support plate 15 and extends to the upper side of the U-shaped support plate 15. An operating handwheel 17 is fixedly connected to the upper side of the double-ended lead screw 16.

[0030] Each of the two opening and closing operating handles 21 has a through-hole recess 22 on one side. Threaded rods 23 are engaged inside each of the two recesses 22. A round rod 24 is slidably connected to one side of each of the two threaded rods 23. The two threaded rods 23 are located on both sides of the round rod 24. Threaded caps 8 that are compatible with the threaded rods 23 are threadedly connected to each of the two threaded rods 23. A pressure plate 25 is fixedly connected to the outer surface of the round rod 24. The threaded caps 8 can be used to fix the two threaded rods 23. The round rods 24 and the threaded rods 23 can be linked together to achieve rapid disconnection of the circuit breaker, making it convenient to use.

[0031] Both sides of the first circuit breaker 1 and the second circuit breaker 2 are provided with grooves 13. Heat sinks 14 are connected in an array inside the grooves 13. The heat sinks 14 can conduct heat from the circuit breaker. There is a certain heat dissipation space between the assembled circuit breakers, so that the heat generated when the circuit breaker is working will not be concentrated, and the heat can be dissipated quickly, thus improving the heat dissipation effect of the circuit breaker.

[0032] The working principle of the fast-disconnecting residual current protection circuit breaker provided by this utility model is as follows:

[0033] By simultaneously pressing the two embedded blocks 5 at the mounting block 3, the guide rods 4 at the two embedded blocks 5 can drive the two embedded blocks 5 to retract into the interior of the mounting block 3 and compress the first spring 6. Then, the mounting block 3 is snapped into the interior of the fixing box 7. Subsequently, with the help of the elastic force of the first spring 6, the two embedded blocks 5 automatically extend and are embedded into the interior of the adapter slot 9. In this way, the first circuit breaker 1 and the second circuit breaker 2 can be snapped together to achieve the initial connection between the circuit breakers. Then, the snap block 66 at the mounting block 3 will also snap into the mounting groove 11 of the U-shaped plate 10. Then, the pin 88 is inserted into the round groove 12 of the U-shaped plate 10 and the interior of the snap block 66. By further locking the two circuit breakers, the snap-fit ​​connection and fixing measures can be used to assemble each residual current protection circuit breaker. The circuit breakers are interconnected to form a whole, so as to securely assemble the residual current protection circuit breaker, improve the stability of the residual current protection circuit breaker during installation, and prevent it from loosening and falling off. This ensures the safe and stable use of the residual current protection circuit breaker and can better perform its functions of protecting the circuit and preventing leakage.

[0034] By placing the round rod 24 between the two opening and closing operating handles 21 of the first circuit breaker 1 and the second circuit breaker 2, and then moving the two threaded rods 23 at the round rod 24 so that the two threaded rods 23 enter the embedded grooves 22 of the two opening and closing operating handles 21, and then threading the two threaded covers 8 onto the two threaded rods 23 respectively, the two opening and closing operating handles 21 are assembled and locked together. At this time, by manually pushing the pressure plate 25 at the round rod 24, the opening and closing operations of the two circuit breakers can be completed simultaneously, so that the residual current protection circuit breaker has the ability to quickly disconnect. Then, the operating handwheel 17 on the double-ended lead screw 16 is rotated, so that the operating handwheel 17 drives the double-ended lead screw 16 to rotate, so that the two lead screw sleeves 18 on the double-ended lead screw 16 can move towards each other and drive the two mounting clamps 19 to be firmly clamped onto the guide rail, so that it is not easy to fall off the guide rail due to loosening, thus ensuring the reliability and safety of the entire clamping mechanism.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A fast breaking residual current protective circuit breaker comprising a first circuit breaker (1) and a second circuit breaker (2), characterized in that: A mounting block (3) is fixedly connected to one side of the first circuit breaker (1) and the second circuit breaker (2), and a fixing box (7) is fixedly connected to the other side of the first circuit breaker (1) and the second circuit breaker (2). Guide rods (4) are slidably connected to both sides of the mounting block (3), and an embedded block (5) is fixedly connected to one side of each of the two guide rods (4). A first spring (6) is fixedly connected between the two embedded blocks (5) and the mounting block (3). The fixed box (7) has a through-hole adapter slot (9) inside. The mounting block (3) and the embedding block (5) are adapted to the adapter slot (9). A U-shaped plate (10) is fixedly connected to one side of the fixed box (7). An installation slot (11) is opened on one side of the U-shaped plate (10). A locking block (66) is fixedly connected to one end of the mounting block (3). One side of the mounting block (3) and the embedding block (5) are locked inside the adapter slot (9). The first circuit breaker (1) and the second circuit breaker (2) are both equipped with opening and closing operation handles (21).

2. The fast-disconnecting residual current protection circuit breaker according to claim 1, characterized in that, The mounting groove (11) has a through circular groove (12) inside. The upper side of the locking block (66) is engaged with a pin (88). The lower side of the pin (88) passes through the locking block (66) and extends to the lower side of the locking block (66). One side of the locking block (66) is engaged inside the mounting groove (11), and one side of the pin (88) is engaged inside the circular groove (12).

3. A fast-disconnecting residual current protection circuit breaker according to claim 1, characterized in that, The second circuit breaker (2) is fixedly connected to a U-shaped support plate (15) at one end. A double-ended lead screw (16) is rotatably connected inside the U-shaped support plate (15). Two lead screw sleeves (18) adapted to the double-ended lead screw (16) are provided on the double-ended lead screw (16). A mounting clamp (19) is fixedly connected to one side of each of the two lead screw sleeves (18).

4. A fast-disconnecting residual current protection circuit breaker according to claim 3, characterized in that, The U-shaped support plate (15) is internally fixedly connected to a limiting vertical rod (20) parallel to the double-ended lead screw (16). The upper side of the double-ended lead screw (16) passes through the U-shaped support plate (15) and extends to the upper side of the U-shaped support plate (15). An operating handwheel (17) is fixedly connected to the upper side of the double-ended lead screw (16).

5. A fast-disconnecting residual current protection circuit breaker according to claim 1, characterized in that, Each of the two opening and closing operation handles (21) has a through-hole embedded groove (22) on one side. Each of the two embedded grooves (22) has a threaded rod (23) inserted inside. A round rod (24) is slidably connected to one side of each of the two threaded rods (23). The two threaded rods (23) are located on both sides of the round rod (24). Each of the two threaded rods (23) has a threaded cap (8) that is compatible with the threaded rod (23) threadedly connected. A pressure plate (25) is fixedly connected to the outer surface of the round rod (24).

6. A fast-disconnecting residual current protection circuit breaker according to claim 1, characterized in that, The first circuit breaker (1) and the second circuit breaker (2) are provided with grooves (13) on both sides, and heat sinks (14) are connected in an array inside the grooves (13).

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