An electric leakage circuit breaker static contact terminal combination facilitating wiring

Abstract

The present application relates to the technical field of leakage circuit breaker, and disclose a leakage circuit breaker static contact terminal combination convenient for wiring, comprising a leakage circuit breaker body, a quick connection plate and a connecting plate cover, the quick connection plate is provided with a positioning and locking mechanism at both ends, the mechanism comprises a locking assembly and a driving assembly, the locking assembly and the driving assembly are in threaded transmission through a locking screw rod and a locking transmission disc, the driving locking guide block and the circuit breaker locking plate are moved to fix the quick connection plate at the upper and lower ends of the leakage circuit breaker body, and an auxiliary clamping assembly is further arranged, comprising an auxiliary clamping plate and an auxiliary spring, which is used for providing a pre-clamping force, a plurality of wire clamping mechanisms are arranged on the inner side of the quick connection plate, which are composed of a first clamping frame, a second clamping frame, a first clamping sleeve, a second clamping sleeve and a clamping screw rod, the second clamping sleeve is pushed by rotating the clamping screw rod, and the elastic clamping of the electric wire is realized by cooperating the first clamping sleeve and the clamping spring, rigid fixation is realized through the positioning and locking mechanism, and the quick and stable connection of the electric wire is realized through the wire clamping mechanism.

Description

Technical Field

[0001] This invention relates to the field of residual current circuit breaker technology, specifically to a residual current circuit breaker stationary contact terminal assembly that facilitates wiring. Background Technology

[0002] A residual current circuit breaker (RCCB) is a protective electrical device used in low-voltage power distribution lines. Its main function is to automatically cut off the power supply when a leakage current or electric shock fault occurs in the circuit, preventing electric shock and electrical fires. RCCBs are widely used in various electrical locations such as residential buildings, commercial buildings, and industrial plants, and are usually installed in distribution boxes, used in conjunction with wires and switches. With the increasing prevalence of electrical equipment, higher requirements are placed on the ease of installation and wiring reliability of RCCBs, especially during on-site construction and maintenance, where frequent wiring and disconnection operations are required.

[0003] Traditional residual current circuit breakers (RCCBs) typically use screw-pressed terminals for their stationary contacts. This involves installing a screw in the wiring hole, requiring the operator to use a screwdriver to tighten it and secure the wire to the terminal. This wiring method is clearly inadequate. First, it relies on tools, making screw tightening in the confined space of a distribution box inconvenient and inefficient. Second, excessive tightening force can damage or even break the wire, while insufficient force can lead to poor contact, overheating, or even burning of the terminal. Furthermore, disassembly also requires tools, making wire replacement time-consuming and labor-intensive. While some quick-connection structures exist, they often suffer from unreliable locking mechanisms, inability to adapt to different wire diameters, or the need for auxiliary tools, making it difficult to balance wiring efficiency and connection stability. Therefore, we propose a new RCCB stationary contact terminal combination that facilitates wiring. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a convenient wiring assembly for the stationary contact terminals of a residual current circuit breaker, thus solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a residual current circuit breaker stationary contact terminal assembly that facilitates wiring, comprising: The circuit breaker includes a body, quick-connect plates, and a cover. Quick-connect plates are provided at both the top and bottom of the circuit breaker body. A cover is provided on the top of each quick-connect plate. Protective plates are provided at both ends of the quick-connect plates, and symmetrically distributed auxiliary pads are fixed to the bottom of both ends of the quick-connect plates. The circuit breaker also includes: The positioning and locking mechanism is set on the inner side of both ends of the quick-connect plate and located on the front side of the protective plate. The positioning and locking mechanism includes a locking component and a driving component. The locking component and the driving component drive each other to fix the quick-connect plate to the upper and lower ends of the residual current circuit breaker body respectively. An auxiliary clamping assembly is slidably disposed at the bottom of both ends of the quick-connect plate and is symmetrically distributed. It is located on the front side of the auxiliary pad plate and is used to assist the quick-connect plate in fixing it to the body of the residual current circuit breaker. The wire clamping mechanism is arranged in multiple groups at equal intervals on the inner side of the quick-connect plate, between the quick-connect plate and the plate cover, and is used to fix the wire to the wiring hole on the residual current circuit breaker body.

[0006] Preferably, the quick-connect plate has symmetrical support pads integrally formed at both ends of the bottom, the support pads are located in front of the auxiliary pads, the support pads are provided with T-shaped auxiliary sliding grooves, and the quick-connect plate has locking sliding cavities at both ends, the locking sliding cavities are located between the two support pads. The inner front end face of the locking slide cavity is provided with a T-shaped locking block positioning groove, and the two ends of the locking slide cavity are provided with auxiliary plate slide cavities that communicate with it.

[0007] Preferably, the locking assembly consists of a locking guide block, a locking auxiliary plate, a locking spring, and a circuit breaker locking plate. The locking guide block has L-shaped locking auxiliary plates fixed at both ends, with the corners of the locking auxiliary plates distributed towards the front of the locking guide block, and a locking spring fixed on the back of one end of the locking auxiliary plate. The locking guide block is slidably installed inside the locking slide cavity, and the locking auxiliary plate is slidably disposed inside the auxiliary plate slide cavity. The other end of the locking spring is fixedly connected to one end of the inner side of the auxiliary plate slide cavity. The bottom end of the locking guide block is fixed with a circuit breaker locking plate, and a trapezoidal rubber pad is installed on the front end face of the circuit breaker locking plate. The rubber pad is tightly fitted to both ends of the residual current circuit breaker body.

[0008] Preferably, the drive assembly consists of a locking screw, a screw clamp, and a locking transmission disc. The screw clamp is I-shaped and is engaged inside the clamp positioning groove. The locking screw passes through the locking guide block and is fixedly connected to one end of the screw clamp. A locking transmission disc is sleeved on the locking screw, and the locking transmission disc is threadedly connected to the locking screw. The front end of the locking transmission disc is in contact with the back of the locking guide block. The locking transmission disc is located inside the locking slide cavity, and the end of the locking screw extends into the interior of the protective plate.

[0009] Preferably, the auxiliary clamping assembly consists of an auxiliary clamping plate and an auxiliary spring. The auxiliary clamping plate is disposed at the front end of the auxiliary pad, and a T-shaped auxiliary slider is integrally formed at the top of the auxiliary clamping plate. The auxiliary slider slides in cooperation with the auxiliary groove on the support pad. The back of the auxiliary clamp is fixed with symmetrical auxiliary springs, the other end of which is fixedly connected to the front end of the auxiliary pad. The front end of the auxiliary clamp is fixed with a second rubber pad, which is in close contact with both ends of the residual current circuit breaker body.

[0010] Preferably, the quick-connect plate has a rectangular clamping frame cavity on the inner side of its top end, the clamping frame cavity being stepped, and a horizontally distributed screw cavity on the front end of the quick-connect plate, the screw cavity being connected to the clamping frame cavity.

[0011] Preferably, the wire clamping mechanism consists of a first clamping frame, a second clamping frame, a first clamping sleeve, a clamping spring, a second clamping sleeve, and a clamping screw. The first clamping frame and the second clamping frame have the same structure and are U-shaped. Both of them have a support guide block on their back. The first clamping frame and the second clamping frame have symmetrical upper and lower clamping guide grooves on their front ends.

[0012] Preferably, the first clamping sleeve and the second clamping sleeve have the same structure, and the front ends of both are semi-circular arc-shaped. The two ends of the first clamping sleeve and the second clamping sleeve are respectively fixed with symmetrical clamping sleeve guide blocks. The first clamping sleeve is disposed on the inner front end of the first clamping frame, and the clamping guide blocks at both ends of the first clamping sleeve are slidably engaged with the clamping guide groove on the inner side of the first clamping frame. Multiple clamping springs are fixed on the back of the first clamping sleeve at equal intervals, and the other end of the clamping spring is fixedly connected to the inner front end of the first clamping frame. The second clamping sleeve is disposed on the inner side of the front end of the second clamping frame, and the clamping guide blocks at both ends of the second clamping sleeve are slidably engaged with the clamping guide groove on the inner side of the second clamping frame. A connecting cylinder is fixedly provided on the back of the second clamping sleeve. A screw locking cylinder is fixed on the back of the support guide block of the second clamping frame, and the screw locking cylinder is connected to the inner side of the front end of the second clamping frame.

[0013] Preferably, the front ends of the first clamping frame are provided with cross-shaped positioning slots on both sides, and the front ends of the second clamping frame are fixed with cross-shaped positioning blocks on both sides. The positioning blocks engage with the positioning slots, so that the first clamping frame and the second clamping frame are enclosed to form a rectangular cuboid. The first clamping sleeve and the second clamping sleeve are disposed on the inner side of the cuboid.

[0014] Preferably, the first clamping frame and the second clamping frame are slidably disposed in the clamping frame slide cavity on the inner side of the top of the quick-connect plate, and the screw locking cylinder on the back of the second clamping frame extends into the interior of the screw slide cavity, wherein the screw locking cylinder is threaded with a clamping screw, and the end of the clamping screw extends into the connecting cylinder on the back of the second clamping sleeve and forms a rotatable connection therewith; The connecting plate cover is bolted to the top of the quick-connect plate, and an auxiliary hole 1 corresponding to the clamping frame slide cavity is opened in the middle of the connecting plate cover. The auxiliary hole corresponds to the position of the first clamping frame and the second clamping frame. The two ends of the connecting plate cover are provided with auxiliary holes 2 corresponding to the locking slide cavity. The auxiliary holes 2 correspond to the position of the locking guide block.

[0015] Compared with the prior art, the present invention provides a residual current circuit breaker stationary contact terminal assembly that is easy to wire, and has the following beneficial effects: 1. This easy-to-wire residual current circuit breaker (RCCB) stationary contact terminal assembly, through the setting of auxiliary clamping components and positioning locking mechanisms, achieves integrated operation of quick pre-fixation and rigid locking of the quick-connect plate on the RCCB body. Specifically, driven by an auxiliary spring, the auxiliary clamping plate, through the cooperation of an auxiliary slider and an auxiliary groove, provides a flexible pre-clamping force to the circuit breaker body before locking, preventing the quick-connect plate from slipping. Subsequently, rotating the locking screw drives the locking transmission disc to push the locking guide block, ensuring that the rubber pad at the front end of the circuit breaker locking plate tightly adheres to both ends of the circuit breaker body. The quick-connect plate can be securely installed and removed without the need for external tools, improving assembly efficiency and maintenance convenience.

[0016] 2. This easy-to-wire residual current circuit breaker stationary contact terminal assembly achieves elastic adaptive clamping of wires of different diameters through a wire clamping mechanism. The first clamping sleeve and the second clamping sleeve are slidably disposed in the first clamping frame and the second clamping frame, respectively. The back of the first clamping sleeve is provided with multiple clamping springs. When the clamping screw is rotated to push the second clamping sleeve forward, the wire is clamped between the two semi-circular clamping sleeves. The first clamping sleeve provides elastic compensation force under the action of the clamping springs, avoiding rigid damage to the wire, and ensuring that the wire at the wiring hole is always in a stable clamping state, thereby improving the safety and reliability of wiring.

[0017] 3. This easy-to-wire residual current circuit breaker stationary contact terminal assembly requires no external tools for fixing and disassembling during wiring, making it simple to operate and compact in structure. During wiring, simply place the wire into the clamping space formed by the first and second clamping sleeves, manually align the positioning card block with the positioning card slot to complete the enclosure, and then rotate the clamping screw to quickly fix the wire. For disassembly, rotate the clamping screw in the opposite direction to release the wire. Simultaneously, the quick-connect plate and the residual current circuit breaker body are connected via a locking screw and a locking transmission disc, enabling tool-free assembly and disassembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the structure of the present invention; Figure 3 This is a schematic diagram showing the structural breakdown of the present invention; Figure 4 This is a schematic diagram showing the disassembled structure of the positioning and locking mechanism of the present invention; Figure 5 This is a schematic diagram showing the disassembled structure of the wire clamping mechanism of the present invention; Figure 6 This is a schematic diagram of the quick-connect plate structure of the present invention; Figure 7 This is a schematic diagram of the quick-connect plate structure of the present invention.

[0019] In the diagram: 1. Residual current circuit breaker body; 2. Quick-connect plate; 3. Connector cover; 4. Protective plate; 5. Auxiliary clamping plate; 6. Auxiliary spring; 7. Locking screw; 8. Screw catch; 9. Locking transmission disc; 10. Locking guide block; 11. Locking auxiliary plate; 12. Locking spring; 13. Circuit breaker locking plate; 14. First clamping frame; 15. Second clamping frame; 16. First clamping sleeve; 17. Clamping spring 18. Spring; 19. Second clamping sleeve; 20. Clamping screw; 21. Clamping sleeve guide groove; 22. Clamping sleeve guide block; 23. Positioning snap-fit ​​groove; 24. Positioning snap-fit ​​block; 25. Screw locking cylinder; 26. Auxiliary pad; 27. Support pad; 28. Auxiliary slide groove; 29. ​​Locking slide cavity; 30. Auxiliary plate slide cavity; 31. Snap-fit ​​positioning groove; 32. Clamping frame slide cavity; 33. Screw slide cavity; 34. Auxiliary slider. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-7 A residual current circuit breaker stationary contact terminal assembly for easy wiring, comprising: The circuit breaker body 1, quick-connect plate 2, and plate cover 3 are provided. Quick-connect plates 2 are respectively installed at the upper and lower ends of the circuit breaker body 1. A plate cover 3 is installed on the top of the quick-connect plate 2. Protective plates 4 are installed at both ends of the quick-connect plate 2 to protect the internal positioning and locking mechanism, preventing locking failure due to external collisions or accidental contact. Symmetrically distributed auxiliary pads 25 are fixed at the bottom of both ends of the quick-connect plate 2. The auxiliary pads 25 serve as mounting bases for the auxiliary clamping components and, in conjunction with the auxiliary spring 6, provide a stable support surface, ensuring that the auxiliary clamping plate 5 remains horizontal during sliding and preventing tilting. It also includes: The positioning and locking mechanism is located on the inner sides of both ends of the quick-connect plate 2 and on the front side of the protective plate 4. The positioning and locking mechanism includes a locking component and a driving component. The locking component and the driving component drive each other to fix the quick-connect plate 2 to the upper and lower ends of the residual current circuit breaker body 1 respectively. The operator does not need to use external tools. He only needs to rotate the locking screw 7 to drive the locking guide block 10 and the circuit breaker locking plate 13 to move, so as to achieve rigid locking or quick disassembly. The auxiliary clamping assembly is slidably disposed at the bottom of both ends of the quick-connect plate 2 and is symmetrically distributed. It is located on the front side of the auxiliary pad 25. The auxiliary clamping assembly is used to assist the quick-connect plate 2 in fixing it to the residual current circuit breaker body 1. When the quick-connect plate 2 approaches the circuit breaker body 1, the auxiliary clamping plate 5 first contacts and compresses the spring, generating a continuous reverse elastic force to pre-fix the quick-connect plate 2 in a predetermined position, preventing it from slipping and facilitating subsequent rigid locking operations. The wire clamping mechanism is arranged in multiple groups at equal intervals on the inner side of the quick-connect plate 2, between the quick-connect plate 2 and the plate cover 3, and is used to fix the wire to the wiring hole on the residual current circuit breaker body 1. The rotating clamping screw 19 pushes the second clamping sleeve 18, which, together with the clamping spring 17 on the back of the first clamping sleeve 16, realizes elastic adaptive clamping of wires of different diameters, avoids damaging the wires, and ensures reliable wiring.

[0022] Furthermore, the quick-connect plate 2 has symmetrical support pads 26 integrally formed at both ends of its bottom. The support pads 26 are located in front of the auxiliary pads 25. The support pads 26 have T-shaped auxiliary grooves 27. The quick-connect plate 2 has locking cavities 28 at both ends of its bottom. The locking cavities 28 are located between the two support pads 26. The support pads 26 integrally formed at both ends of the quick-connect plate 2 are symmetrically arranged in front of the auxiliary pads 25. Together, they form a stable bottom support structure. The auxiliary grooves 27 are T-shaped and are used to guide the auxiliary slider 33 to slide smoothly. The inner front end face of the locking slide cavity 28 is provided with a T-shaped locking block positioning groove 30, and both ends of the locking slide cavity 28 are provided with auxiliary plate slide cavities 29 that communicate with it. The locking slide cavity 28 is located between two support pads 26, and its inner front end locking block positioning groove 30 is also T-shaped, used to fix the lead screw locking block 8 and prevent its axial movement. The auxiliary plate slide cavity 29 communicates with the locking slide cavity 28, providing guide space for the locking auxiliary plate 11.

[0023] Furthermore, the locking assembly consists of a locking guide block 10, a locking auxiliary plate 11, a locking spring 12, and a circuit breaker locking plate 13. The locking guide block 10 has L-shaped locking auxiliary plates 11 fixed at both ends. The corners of the locking auxiliary plates 11 are distributed towards the front of the locking guide block 10, and a locking spring 12 is fixed on the back of one end of the locking auxiliary plate 11. The locking guide block 10 is slidably installed inside the locking slide cavity 28, and the locking auxiliary plate 11 is slidably disposed inside the auxiliary plate slide cavity 29. The other end of the locking spring 12 is fixedly connected to one end of the inner side of the auxiliary plate slide cavity 29. A circuit breaker locking plate 13 is fixedly installed at the bottom end of the locking guide block 10. A trapezoidal rubber pad is installed on the front end face of the circuit breaker locking plate 13. The rubber pad is tightly fitted to both ends of the residual current circuit breaker body 1. The locking guide block 10 is slidably installed in the locking slide cavity 28. The L-shaped locking auxiliary plates 11 at both ends of the block extend into the auxiliary plate slide cavity 29. One end of the locking spring 12 is fixed to the back of the locking auxiliary plate 11, and the other end is connected to the inner side of the auxiliary plate slide cavity 29. Under normal conditions, the circuit breaker locking plate 13 maintains a retracting tendency. When the locking guide block 10 is pushed forward, the trapezoidal rubber pad at the front end of the circuit breaker locking plate 13 contacts both ends of the residual current circuit breaker body 1 first, and achieves a tight and rigid fit as the thrust increases, ensuring locking reliability.

[0024] Furthermore, the drive assembly consists of a locking screw 7, a screw block 8, and a locking transmission disc 9. The screw block 8 is I-shaped and is engaged inside the block positioning groove 30. The locking screw 7 passes through the locking guide block 10 and is fixedly connected to one end of the screw block 8. A locking transmission disc 9 is sleeved on the locking screw 7. The locking transmission disc 9 is threadedly connected to the locking screw 7, and the front end of the locking transmission disc 9 is in contact with the back of the locking guide block 10. The locking transmission disc 9 is located inside the locking slide cavity 28, and the end of the locking screw 7 extends into the interior of the protective plate 4. An I-shaped screw catch 8 is engaged in the catch positioning groove 30, so that the locking screw 7 is completely fixed in the axial direction. The locking screw 7 passes through the middle through hole of the locking guide block 10, and its end extends into the interior of the protective plate 4, which is convenient for the operator to screw on. The locking transmission disc 9 is threadedly sleeved on the locking screw 7, and its front end is in contact with the back of the locking guide block 10. When the locking screw 7 is rotated, the locking transmission disc 9 moves axially, thereby pushing the locking guide block 10 to slide, so as to realize the precise transmission and adjustment of the locking force.

[0025] Furthermore, the auxiliary clamping assembly consists of an auxiliary clamping plate 5 and an auxiliary spring 6. The auxiliary clamping plate 5 is located at the front end of the auxiliary pad 25, and a T-shaped auxiliary slider 33 is integrally formed on the top of the auxiliary clamping plate 5. The auxiliary slider 33 slides in cooperation with the auxiliary groove 27 on the support pad 26. Auxiliary springs 6 are fixedly mounted on the back of the auxiliary clamping plate 5, with the other end of the auxiliary springs 6 fixedly connected to the front end of the auxiliary pad 25. Rubber pad II is fixed to the front end of the auxiliary clamping plate 5, and rubber pad II is in close contact with both ends of the residual current circuit breaker body 1. The T-shaped auxiliary slider 33 at the top of the auxiliary clamping plate 5 slides in cooperation with the T-shaped auxiliary slide groove 27 on the support pad 26, ensuring that the auxiliary clamping plate 5 can only move back and forth in the horizontal direction. One end of the auxiliary spring 6 is fixed to the back of the auxiliary clamping plate 5, and the other end is connected to the front end of the auxiliary pad 25. When the quick-connect plate 2 approaches the circuit breaker body 1, the auxiliary clamping plate 5 first contacts the body and compresses the spring, generating a continuous flexible pre-clamping force to prevent the quick-connect plate 2 from shifting before rigid locking.

[0026] Furthermore, a rectangular clamping frame slide cavity 31 is provided on the inner side of the top of the quick-connect plate 2. The clamping frame slide cavity 31 is stepped. A horizontally distributed screw slide cavity 32 is provided at the front end of the quick-connect plate 2. The screw slide cavity 32 is connected to the clamping frame slide cavity 31. The clamping frame slide cavity 31 on the inner side of the top of the quick-connect plate 2 has a stepped rectangular structure, which is used to accommodate and guide the overall sliding of the first clamping frame 14 and the second clamping frame 15. The stepped design of the clamping frame slide cavity 31 can limit the vertical displacement of the clamping frame and prevent it from coming out. The screw slide cavity 32 at the front end of the quick-connect plate 2 is horizontally distributed and connected to the clamping frame slide cavity 31, providing a sliding channel for the screw locking cylinder 24, so that the clamping screw 19 can be operated externally to drive the internal clamping action.

[0027] Furthermore, the wire clamping mechanism consists of a first clamping frame 14, a second clamping frame 15, a first clamping sleeve 16, a clamping spring 17, a second clamping sleeve 18, and a clamping screw 19. The first clamping frame 14 and the second clamping frame 15 have the same structure. The first clamping frame 14 and the second clamping frame 15 are U-shaped, and both have support guide blocks on their back sides. The first clamping frame 14 and the second clamping frame 15 are respectively provided with symmetrical upper and lower clamping guide grooves 20 on both sides of the front end; the first clamping frame 14 and the second clamping frame 15 are both U-shaped and have the same structure, and the back of both are provided with support guide blocks to facilitate sliding in the clamping frame sliding cavity 31; the first clamping frame 14 and the second clamping frame 15 are respectively provided with symmetrical upper and lower clamping guide grooves 20 on both sides of the front end, and the clamping guide grooves 20 are used to guide the clamping guide blocks 21 at both ends of the first clamping sleeve 16 and the second clamping sleeve 18 to ensure that the two clamping sleeves always move smoothly along a straight line during the clamping process, and avoid deviation or jamming.

[0028] Furthermore, the first clamping sleeve 16 and the second clamping sleeve 18 have the same structure, and the front end of both is semi-circular. The two ends of the first clamping sleeve 16 and the second clamping sleeve 18 are respectively fixed with symmetrical clamping guide blocks 21. The first clamping sleeve 16 is disposed on the inner side of the front end of the first clamping frame 14, and the clamping guide blocks 21 at both ends of the first clamping sleeve 16 are slidably engaged with the clamping guide groove 20 on the inner side of the first clamping frame 14. Multiple clamping springs 17 are fixed on the back of the first clamping sleeve 16 at equal intervals, and the other end of the clamping spring 17 is fixedly connected to the inner side of the front end of the first clamping frame 14. The second clamping sleeve 18 is disposed on the inner side of the front end of the second clamping frame 15, and the clamping guide blocks 21 at both ends of the second clamping sleeve 18 are slidably engaged with the clamping guide groove 20 on the inner side of the second clamping frame 15. A connecting cylinder is fixedly provided on the back of the second clamping sleeve 18. A screw locking cylinder 24 is fixed on the back of the support guide block of the second clamping frame 15, and the screw locking cylinder 24 is connected to the inner front end of the second clamping frame 15. The front ends of the first clamping sleeve 16 and the second clamping sleeve 18 are both semi-circular arc-shaped, and they can form an approximately circular clamping space after they are put together to accommodate circular wires. Multiple clamping springs 17 are fixed on the back of the first clamping sleeve 16 at equal intervals, and the other end of the spring is connected to the inner side of the first clamping frame 14 to provide elastic adaptive clamping force. A connecting cylinder is provided on the back of the second clamping sleeve 18 for rotating connection with the end of the clamping screw 19, so that when the screw rotates, it only pushes the second clamping sleeve to move without driving it to rotate, ensuring stable clamping action.

[0029] Furthermore, the front ends of the first clamping frame 14 are provided with cross-shaped positioning slots 22 on both sides, and the front ends of the second clamping frame 15 are fixed with cross-shaped positioning blocks 23 on both sides. The positioning blocks 23 engage with the positioning slots 22. The cross-shaped structure has a bidirectional limiting function to prevent the first clamping frame 14 and the second clamping frame 15 from being misaligned in the vertical or horizontal direction after being enclosed. This allows the first clamping frame 14 and the second clamping frame 15 to enclose and form a rectangular cuboid. The first clamping sleeve 16 and the second clamping sleeve 18 are located inside the cuboid. After being enclosed, the two form a stable rectangular cuboid. The first clamping sleeve 16 and the second clamping sleeve 18 are located inside it, ensuring that the direction of the clamping force is always aligned with the center of the wire during clamping, thus improving the reliability of the wiring.

[0030] Furthermore, the first clamping frame 14 and the second clamping frame 15 are slidably disposed in the clamping frame slide cavity 31 on the inner side of the top of the quick-connect plate 2. The screw locking cylinder 24 on the back of the second clamping frame 15 extends into the interior of the screw slide cavity 32. The screw locking cylinder 24 is threaded with a clamping screw 19. The end of the clamping screw 19 extends into the connecting cylinder on the back of the second clamping sleeve 18 and forms a rotatable connection with it. The connecting plate cover 3 is bolted to the top of the quick-connect plate 2. The middle of the connecting plate cover 3 has an auxiliary hole 1 corresponding to the clamping frame slide cavity 31. The auxiliary hole corresponds to the position of the first clamping frame 14 and the second clamping frame 15. The two ends of the connecting plate cover 3 have auxiliary holes 2 corresponding to the locking slide cavity 28. The auxiliary holes 2 correspond to the position of the locking guide block 10. The first clamping frame 14 and the second clamping frame 15 are slidably arranged in the clamping frame slide cavity 31 at the top of the quick-connect plate 2. The screw locking cylinder 24 on the back of the second clamping frame 15 extends into the screw slide cavity 32. The clamping screw 19 is threaded inside it, and its end extends into the connecting cylinder on the back of the second clamping sleeve 18 and forms a rotating connection. The connecting plate cover 3 is bolted to the top of the quick-connect plate 2. The auxiliary holes 1 and 2 on the connecting plate cover correspond to the clamping frame slide cavity 31 and the locking slide cavity 28, respectively. This facilitates observation of the internal state and does not affect the movement stroke of the clamping frame and the locking guide block.

[0031] Working principle: During initial installation, the operator places the quick-connect plate 2 close to the end of the residual current circuit breaker body 1. At this time, the auxiliary clamping components symmetrically distributed at the bottom of both ends of the quick-connect plate 2 take effect first. This component consists of auxiliary clamping plates 5 and auxiliary springs 6. When the quick-connect plate 2 approaches the circuit breaker body 1, the rubber pads fixed at the front end of the auxiliary clamping plates 5 will first make close contact with both ends of the residual current circuit breaker body 1. As the quick-connect plate 2 is further advanced, the auxiliary clamping plates 5 will be subjected to the reaction force of the circuit breaker body. The T-shaped auxiliary slider 33 at its top will slide backward along the T-shaped auxiliary sliding groove 27 on the support pad 26, compressing the auxiliary spring 6 connected between the back of the auxiliary clamping plates 5 and the front end of the auxiliary pad 25. The compressed auxiliary spring 6 will generate A forward restoring force is generated and acts on the circuit breaker body 1 through the auxiliary clamping plate 5, thereby forming a continuous and flexible pre-clamping force. Simultaneously, before the positioning and locking mechanism operates, the quick-connect plate 2 is pre-fixed in the predetermined position on the circuit breaker body 1 to prevent slippage or displacement, facilitating subsequent operations. After the positioning and locking mechanism locks, additional auxiliary clamping force is provided, enhancing the installation stability and shock resistance of the entire assembly. After the auxiliary clamping component provides pre-fixation, the operator drives the locking component through the drive assembly to achieve final rigid locking. The core of the drive assembly consists of the locking screw 7, the screw block 8, and the locking transmission disc 9. The end of the locking screw 7 extends into the interior of the protective plate 4. Because the screw block 8 is I-shaped and firmly secured... The locking screw 7 is axially positioned within the locking slot 30 at the front end of the locking slide cavity 28, preventing axial and lateral movement or rotation. The locking assembly includes a locking guide block 10, a locking auxiliary plate 11, a locking spring 12, and a circuit breaker locking plate 13. The locking guide block 10 slides on the locking screw 7. When the locking transmission disc 9 has not moved, the locking guide block 10 uses the spring force of the locking spring 12 to move the circuit breaker locking plate 13 towards the inside of the quick-connect plate 2, so that the rubber pad at the front end of the circuit breaker locking plate 13 is in contact with the end of the residual current circuit breaker body 1. When the locking transmission disc 9 rotates, the locking transmission disc 9 and the locking screw 7 are threadedly connected, and then the locking transmission disc 9 will move axially along the locking screw 7. As the front end of the locking transmission disc 9 is in contact with the back of the locking guide block 10, its movement directly pushes the locking guide block 10. The locking guide block 10 is in the locking slide cavity 28, and the L-shaped locking auxiliary plates 11 fixed at both ends are in the auxiliary plate slide cavity 29. They are guided to slide forward together. As the locking guide block 10 slides forward, the trapezoidal rubber pad at the front end of the circuit breaker locking plate 13 gradually comes into close contact with both ends of the residual current circuit breaker body 1. As the locking guide block 10 continues to move forward, it generates an increasing clamping force, thereby firmly locking the quick-connect plate 2 onto the residual current circuit breaker body 1. The number of turns of the locking screw 7 determines the magnitude of the locking force. The operator can make precise adjustments according to actual needs, achieving rigid, adjustable, and reliable locking.Conversely, when locking the transmission disc 9 and locking the guide block 10 slides on the locking screw 7 to move backward, the locking force disappears, and the entire locking assembly can be quickly reset for easy disassembly. After the quick-connect plate 2 is securely installed, the wire is connected. This process is completed by the wire clamping mechanism, which can adapt to wires of different diameters and provide stable and reliable clamping force. The wire clamping mechanism mainly consists of a first clamping frame 14 and a second clamping frame 15 that can be enclosed to form a rectangular cuboid, and a first clamping sleeve 16 and a second clamping sleeve 18 respectively disposed inside the first and second clamping frames. In the initial state, the first clamping frame 14 and the second clamping frame 15 are in a separated state to facilitate the insertion of the wire. When it is necessary to clamp the wire, the operation process is as follows: First, the wire end with the insulation stripped is placed into the approximately circular clamping space enclosed by the semi-circular front ends of the first clamping sleeve 16 and the second clamping sleeve 18; then, the operation... The operator manually aligns the second clamping frame 15 with the first clamping frame 14. During this process, the cross-shaped positioning latches 23 on both sides of the front end of the second clamping frame 15 precisely engage with the cross-shaped positioning latches 22 on both sides of the front end of the first clamping frame 14. The cross-shaped latching structure ensures that the first clamping frame 14 and the second clamping frame 15 form a stable rectangular cuboid structure after being enclosed, preventing relative misalignment or separation and ensuring the accuracy of the clamping action. After the enclosure is completed, the first clamping frame 14 and the second clamping frame 15 are slidably mounted as a whole in the clamping frame slide cavity 31 on the top of the quick-connect plate 2. The operator then turns the clamping screw 19, which is threaded onto the screw on the back of the second clamping frame 15. Inside the locking cylinder 24, its end extends into the connecting cylinder on the back of the second clamping sleeve 18 and forms a rotatable connection. Therefore, when the clamping screw 19 is rotated clockwise, since the screw locking cylinder 24 is fixed on the second clamping frame 15, the clamping screw 19 itself will rotate forward relative to the screw locking cylinder 24, thereby pushing the second clamping sleeve 18 forward. At the same time, the pushed second clamping sleeve 18 will smoothly approach the wire direction under the guidance of the connecting cylinder on its back and the clamping screw 19, and the guide blocks 21 at both ends of its clamping sleeve 18 on the inner side of the second clamping frame 15. While the second clamping sleeve 18 is being pushed, its front clamping surface will contact the wire and push the wire towards the opposite first clamping sleeve 18. 6; After being subjected to pressure from the wire, the first clamping sleeve 16 compresses the multiple equidistant clamping springs 17 fixed on its back, and causes the clamping guide blocks 21 at both ends to slide backward along the clamping guide grooves 20 on the inner side of the first clamping frame 14. The clamping springs 17 are compressed, thereby generating a forward, gentle and uniform elastic restoring force, which acts on the first clamping sleeve 16, so that it and the second clamping sleeve 18 together apply a stable clamping force to the wire from both sides. The rigid thrust provided by the clamping screw 19 can be adjusted for the initial large stroke to adapt to different wire diameters; while the elastic force provided by the clamping springs 17 serves as the final fine-tuning and holding force, which can ensure that the wire is reliably clamped and avoid damaging the wire due to excessive rigidity.Finally, the wire was securely fixed to the wiring hole on the residual current circuit breaker body 1, completing the wiring operation. The flexible pre-positioning of the auxiliary clamping assembly and the rigid adjustable locking of the positioning locking mechanism enable quick assembly and disassembly of the circuit breaker during wiring.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A residual current circuit breaker stationary contact terminal assembly for easy wiring, characterized in that, include: The circuit breaker body (1), quick-connect plate (2), and connection plate cover (3) are provided. The upper and lower ends of the circuit breaker body (1) are respectively provided with quick-connect plates (2), the top of the quick-connect plate (2) is provided with a connection plate cover (3), the two ends of the quick-connect plate (2) are provided with protective plates (4), and the bottom of the two ends of the quick-connect plate (2) are fixed with symmetrically distributed auxiliary pads (25); it also includes: The positioning and locking mechanism is set on the inner side of both ends of the quick-connect plate (2) and located on the front side of the protective plate (4). The positioning and locking mechanism includes a locking component and a driving component. The locking component and the driving component drive each other to fix the quick-connect plate (2) to the upper and lower ends of the leakage circuit breaker body (1). The auxiliary clamping assembly is slidably disposed at the bottom of both ends of the quick-connect plate (2) and is symmetrically distributed. It is located on the front side of the auxiliary pad (25). The auxiliary clamping assembly is used to assist the quick-connect plate (2) in fixing it to the leakage circuit breaker body (1). The wire clamping mechanism is arranged in multiple groups at equal intervals on the inner side of the quick-connect plate (2), located between the quick-connect plate (2) and the plate cover (3), and is used to fix the wire to the wiring hole on the body of the leakage circuit breaker (1).

2. The residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 1, characterized in that, (26) Located on the front side of the auxiliary pad (25), the support pad (26) is provided with a T-shaped auxiliary slide groove (27), and the quick-connect plate (2) is provided with locking slide cavities (28) at both ends, and the locking slide cavity (28) is located between the two support pads (26); The inner front end face of the locking slide cavity (28) is provided with a T-shaped locking block positioning groove (30), and the two ends of the locking slide cavity (28) are provided with auxiliary plate slide cavities (29) that communicate with it.

3. The residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 2, characterized in that, The locking assembly consists of a locking guide block (10), a locking auxiliary plate (11), a locking spring (12), and a circuit breaker locking plate (13). The locking guide block (10) has L-shaped locking auxiliary plates (11) fixed at both ends. The corners of the locking auxiliary plates (11) are distributed towards the front of the locking guide block (10), and a locking spring (12) is fixed on the back of one end of the locking auxiliary plate (11). The locking guide block (10) is slidably installed inside the locking slide cavity (28), and the locking auxiliary plate (11) is slidably installed inside the auxiliary plate slide cavity (29). The other end of the locking spring (12) is fixedly connected to one end of the inner side of the auxiliary plate slide cavity (29). The bottom end of the locking guide block (10) is fixed with a circuit breaker locking plate (13), and a trapezoidal rubber pad is installed on the front end face of the circuit breaker locking plate (13). The rubber pad is tightly attached to both ends of the leakage circuit breaker body (1).

4. The residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 3, characterized in that, The drive assembly consists of a locking screw (7), a screw block (8), and a locking transmission disc (9). The screw block (8) is I-shaped and is engaged inside the block positioning groove (30). The locking screw (7) passes through the locking guide block (10) and is fixedly connected to one end of the screw block (8). A locking transmission disc (9) is sleeved on the locking screw (7). The locking transmission disc (9) is threadedly connected to the locking screw (7), and the front end of the locking transmission disc (9) is in contact with the back of the locking guide block (10). The locking transmission disc (9) is located inside the locking slide cavity (28), and the end of the locking screw (7) extends into the interior of the protective plate (4).

5. The residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 1, characterized in that, The auxiliary clamping assembly consists of an auxiliary clamping plate (5) and an auxiliary spring (6). The auxiliary clamping plate (5) is located at the front end of the auxiliary pad (25), and the top of the auxiliary clamping plate (5) is integrally formed with a T-shaped auxiliary slider (33). The auxiliary slider (33) slides in cooperation with the auxiliary groove (27) on the support pad (26). The back of the auxiliary clamp (5) is fixed with symmetrical auxiliary springs (6). The other end of the auxiliary spring (6) is fixedly connected to the front end of the auxiliary pad (25). The front end of the auxiliary clamp (5) is fixed with a rubber pad II. The rubber pad II is in close contact with both ends of the leakage circuit breaker body (1).

6. The residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 1, characterized in that, The quick-connect plate (2) has a rectangular frame slide cavity (31) on the inner side of its top end. The frame slide cavity (31) is stepped. The quick-connect plate (2) has a horizontally distributed screw slide cavity (32) at its front end. The screw slide cavity (32) is connected to the frame slide cavity (31).

7. The residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 1, characterized in that, The wire clamping mechanism consists of a first clamping frame (14), a second clamping frame (15), a first clamping sleeve (16), a clamping spring (17), a second clamping sleeve (18), and a clamping screw (19). The first clamping frame (14) and the second clamping frame (15) have the same structure. The first clamping frame (14) and the second clamping frame (15) are U-shaped, and both have support guide blocks on their back sides. The first clamping frame (14) and the second clamping frame (15) have symmetrical upper and lower clamping guide grooves (20) on both sides of their front ends.

8. The residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 7, characterized in that, The first clamping sleeve (16) and the second clamping sleeve (18) have the same structure. The front ends of both are semi-circular arcs. The first clamping sleeve (16) and the second clamping sleeve (18) are respectively fixed with symmetrical clamping guide blocks (21). The first clamping sleeve (16) is disposed on the inner side of the front end of the first clamping frame (14), and the clamping guide blocks (21) at both ends of the first clamping sleeve (16) are slidably engaged with the clamping guide groove (20) on the inner side of the first clamping frame (14). Multiple clamping springs (17) are fixed on the back of the first clamping sleeve (16) at equal intervals, and the other end of the clamping spring (17) is fixedly connected to the inner side of the front end of the first clamping frame (14). The second clamping sleeve (18) is disposed on the inner side of the front end of the second clamping frame (15), and the clamping guide blocks (21) at both ends of the second clamping sleeve (18) are slidably engaged with the clamping guide groove (20) on the inner side of the second clamping frame (15). A connecting cylinder is fixedly provided on the back of the second clamping sleeve (18). The back of the support guide block of the second clamping frame (15) is fixed with a screw locking cylinder (24), and the screw locking cylinder (24) is connected to the inner side of the front end of the second clamping frame (15).

9. A residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 8, characterized in that, The first clamping frame (14) has cross-shaped positioning slots (22) on both sides of its front end, and the second clamping frame (15) has cross-shaped positioning blocks (23) fixed on both sides of its front end. The positioning blocks (23) engage with the positioning slots (22) to form a rectangular cuboid with the first clamping frame (14) and the second clamping frame (15). The first clamping sleeve (16) and the second clamping sleeve (18) are located on the inside of the cuboid.

10. A residual current circuit breaker stationary contact terminal assembly for easy wiring as described in claim 9, characterized in that, The first clamping frame (14) and the second clamping frame (15) are slidably disposed in the clamping frame slide cavity (31) on the inner side of the top of the quick-connect plate (2). The screw locking cylinder (24) on the back of the second clamping frame (15) extends into the interior of the screw slide cavity (32). The screw locking cylinder (24) is threaded with a clamping screw (19). The end of the clamping screw (19) extends into the connecting cylinder on the back of the second clamping sleeve (18) and forms a rotatable connection with it. The connecting plate cover (3) is bolted to the top of the quick-connect plate (2), and the middle part of the connecting plate cover (3) is provided with an auxiliary hole one corresponding to the clamping frame slide cavity (31). The auxiliary hole is corresponding to the position of the first clamping frame (14) and the second clamping frame (15). The two ends of the connecting plate cover (3) are provided with auxiliary holes two corresponding to the locking slide cavity (28). The auxiliary holes two are corresponding to the position of the locking guide block (10).

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