A multi-module miniature circuit breaker

Abstract

This utility model discloses a multi-module miniature circuit breaker. The key technical features include a control module and multiple mechanical modules arranged sequentially along its length. The mechanical modules include a main module located near the control module. The main module includes at least a mounting base and a mounting cover, with the mounting cover positioned near the control module. An extension portion extends from the upper end of the mounting base, where a handle post and a detection chamber are mounted. A handle assembly is mounted on the handle post. A leakage current detection component is installed inside the detection chamber. The mounting cover includes a snap-fit ​​portion at its upper end, the diameter of which is smaller than that of the extension portion. When the snap-fit ​​portion snaps into the extension portion, it seals the detection chamber. This multi-module miniature circuit breaker optimizes the layout of the mechanical system, improves space utilization, and facilitates subsequent maintenance.

Description

Technical Field

[0001] This utility model relates to a circuit breaker, and more specifically, to a multi-module miniature circuit breaker. Background Technology

[0002] The four-in-one miniature circuit breaker (MCB) is an intelligent terminal power distribution device that integrates "monitoring, control, protection, and communication" functions. Its core design breaks through the traditional circuit breaker's single protection function. By integrating high-precision sensors, intelligent control modules, and communication interfaces, it achieves real-time perception of circuit status, remote control, precise protection, and data interaction, meeting the dual needs of industrial, commercial, and civil buildings for power safety and energy efficiency management.

[0003] The existing four-integrated circuit breaker is an integrated structure, which means that the physical actions of the mechanical system (such as contact opening and closing, arc extinguishing) are closely combined with the information processing of the electronic system (such as signal acquisition and logical judgment) to form a closed-loop control of "sensing-decision-execution".

[0004] Current circuit breakers of this type have the following significant drawbacks: First, during disassembly and maintenance, critical areas such as the handle, tripping mechanism, and leakage detection button typically require inspection. However, the internal space layout of existing circuit breakers is inefficient, making it difficult to directly observe the actual condition of each component from a single direction. Maintenance personnel often have to repeatedly disassemble the circuit breaker for comprehensive inspection. Second, the limited internal space restricts the installation of more functional modules. Therefore, it is necessary to scientifically and rationally optimize the design of circuit breakers to meet the increasingly diverse needs of the market. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a multi-module miniature circuit breaker that can optimize the layout of mechanical systems, improve space utilization, and facilitate subsequent maintenance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-module miniature circuit breaker, which includes a control module and multiple sets of mechanical modules in sequence along its length, wherein the multiple sets of mechanical modules include a main module close to the control module; The main module includes at least a mounting base and a mounting cover, with the mounting cover positioned close to the control module; The upper end of the mounting base is provided with an extension, and a handle post and a detection cavity are installed at the extension. A handle assembly is provided on the handle post. The detection chamber is equipped with a leakage current detection component; The mounting cover includes a snap-fit ​​portion at the upper end, the diameter of which is smaller than that of the extension portion. When the snap-fit ​​portion is snapped into the extension portion, it is used to block the detection cavity.

[0007] The present invention is further configured such that: a first detection column and a second detection column are provided in the detection cavity, and an installation gap is formed between the first detection column and the inner wall of the extension; The leakage current detection component includes a detection spring and a detection button. The detection spring includes a mounting piece and an abutment piece. The mounting piece is arranged in an L-shape and is used to be inserted into the installation gap. The abutting piece is disposed at the upper end of the mounting piece, and the detection button is slidably connected to the extension and abuts against the abutting piece.

[0008] The present invention is further configured such that: the inner wall of the extension is recessed with a widening groove, and the snap-fit ​​part is provided with a sealing part for sealing the widening groove and the installation gap.

[0009] The present invention is further configured such that: the handle assembly includes a handle body and a handle torsion spring; the handle body is provided with a torsion spring groove for mounting the handle torsion spring on the side facing the mounting cover; the extension is provided with a first limiting block and a second limiting block; a limiting cavity for inserting the handle torsion spring is left between the first limiting block and the second limiting block. The mounting cover is provided with a sealing part for sealing the torsion spring groove.

[0010] The present invention is further configured such that: a locking rod is provided on the mounting base, a locking assembly is provided on the locking rod, and a linkage rod connects the handle body and the locking assembly.

[0011] The present invention is further configured such that: a release rod is provided on the mounting base, a release plate is rotatably connected to the release rod, and a magnetic release component is provided on the mounting base, the magnetic release component being used to push the release plate to rotate.

[0012] The present invention is further configured such that: a first gear post and a second gear post are provided on the mounting base, and a first reduction gear and a release gear are rotatably connected to the first gear post; A second reduction gear and a worm gear are rotatably connected to the second gear column, and one end of the worm gear is provided with a linkage gear that meshes with the first reduction gear; The second reduction gear is respectively meshed with the first reduction gear and the release gear; The release gear is provided with a release block; A drive motor is mounted on the mounting base, and the drive motor is configured to transmit power via a worm gear and worm wheel.

[0013] The present invention is further configured such that: the two ends of the mounting base are respectively provided with an inlet end and an outlet end, the locking assembly is connected with a moving contact, and the locking assembly or the moving contact is connected to the inlet end; The outgoing terminal is connected to a stationary contact, which has an i-shaped structure and a through hole.

[0014] The present invention is further configured such that: the control module includes a control base, the control base is installed on one side of the mounting cover, and a control cavity for placing the circuit board is formed between the control base and the mounting cover.

[0015] The present invention is further configured such that: a connecting hole is provided through the mounting cover, a mounting hole is provided on the mounting bottom cover, and an assembly hole is provided on the control base corresponding to the connecting hole and the mounting hole.

[0016] In summary, this utility model has the following beneficial effects: through the design of this structure and the embedded structure of the shell, the assembly effect is improved. During assembly, the detection cavity and handle assembly can be effectively sealed. After disassembly and assembly, the detection cavity and handle assembly can be easily displayed, thereby improving the convenience of maintenance operations. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a multi-module miniature circuit breaker; Figure 2 This is a schematic diagram of the separate structure of the control module and the main module; Figure 3 A schematic diagram of the separate structure of the main module; Figure 4 A schematic diagram of the internal structure of the main module; Figure 5 for Figure 4 Enlarged view of point A; Figure 6 A three-dimensional structural diagram of the mounting cover; Figure 7 This is a three-dimensional structural diagram of the tripping assembly in the first direction; Figure 8 This is a three-dimensional structural diagram of the tripping assembly in the second direction.

[0018] Reference numerals: 1. Control module; 11. Control base; 12. Assembly hole; 2. Mechanical module; 3. Main module; 31. Mounting hole; 4. Mounting base; 41. Extension; 411. Widening groove; 412. First limiting block; 413. Second limiting block; 414. Limiting cavity; 42. Handle post; 43. Detection cavity; 431. First detection post; 432. Second detection post; 433. Installation gap; 44. Locking rod; 45. Release rod; 46. Release plate; 47. Magnetic release component; 48. First gear post; 481. First reduction gear; 482. Release gear; 483. 49. Tripping block; 49. Second gear post; 491. Second reduction gear; 492. Worm gear; 493. Linkage gear; 40. Drive motor; 5. Mounting cover; 51. Snap-fit ​​part; 511. Sealing part; 52. Covering part; 53. Connecting hole; 6. Handle assembly; 61. Handle body; 62. Handle torsion spring; 63. Torsion spring groove; 64. Linkage rod; 7. Leakage detection assembly; 71. Detection spring; 711. Mounting piece; 712. Abutment piece; 72. Detection button; 8. Locking assembly; 9. Inlet end; 91. Outlet end; 92. Moving contact; 93. Stationary contact; 94. Through hole. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] Reference Figures 1 to 8 As shown, in order to achieve the above objectives, the present invention provides the following technical solution: a multi-module miniature circuit breaker, which includes a control module 1 and multiple mechanical modules 2 in sequence along its length direction, wherein the multiple mechanical modules 2 include a main module 3 close to the control module 1; The main module 3 includes at least a mounting base 4 and a mounting cover 5, with the mounting cover 5 positioned close to the control module 1; The upper end of the mounting base 4 is provided with an extension part 41, and a handle post 42 and a detection chamber 43 are installed at the extension part 41. A handle assembly 6 is provided on the handle post 42. A leakage current detection component 7 is installed inside the detection cavity 43; The mounting cover 5 includes a snap-fit ​​portion 51 located at the upper end. The diameter of the snap-fit ​​portion 51 is smaller than the diameter of the extension portion 41. When the snap-fit ​​portion 51 is snapped into the extension portion 41, the snap-fit ​​portion 51 is used to block the detection cavity 43.

[0021] The design of this utility model, through the embedded structure of the shell, improves the assembly effect. During assembly, it can effectively seal the detection cavity 43 and the handle assembly 6. After disassembly and assembly, it can easily expose the detection cavity 43 and the handle assembly 6, thereby improving the convenience of maintenance operations.

[0022] The present invention is further configured such that: a first detection column 431 and a second detection column 432 are provided in the detection cavity 43, and an installation gap 433 is formed between the first detection column 431 and the inner wall of the extension 41; The leakage current detection component 7 includes a detection spring 71 and a detection button 72. The detection spring 71 includes a mounting piece 711 and an abutment piece 712. The mounting piece 711 is arranged in an L-shape and is used to be inserted into the installation gap 433. The abutting piece 712 is disposed on the upper end of the mounting piece 711, and the detection button 72 is slidably connected to the extension 41 and abuts against the abutting piece 712.

[0023] By utilizing the installation gap 433 structure naturally formed between the first detection post 431 and the extension 41, the detection spring 71 can be quickly and accurately inserted. This operation ensures that the spring is stably limited and fixed in the vertical direction.

[0024] Subsequently, the mounting cover 5 is installed and fixed. This step not only completes the overall assembly work, but also achieves all-round positioning and stabilization of the detection spring 71.

[0025] By replacing the original spring design with a spring-loaded structure, cost savings and structural optimization were further achieved.

[0026] Operating procedure: The user can press the button on circuit breaker 1 (usually marked with "T" or a test icon) to simulate a leakage current signal and trigger a trip. If the circuit breaker resets after tripping, the switch is normal; if it does not trip, the protector needs to be replaced.

[0027] The present invention is further configured such that: the inner wall of the extension 41 is recessed with a widening groove 411, and the snap-fit ​​part 51 is provided with a sealing part 511 for sealing the widening groove 411 and the installation gap 433. The design of the widening groove 411 reduces the thickness of the shell in this part. Since this part does not have a release structure, it will not be subjected to excessive impact, thereby reasonably reducing the thickness and enhancing the internal space utilization.

[0028] The present invention is further configured such that: the handle assembly 6 includes a handle body 61 and a handle torsion spring 62, the handle body 61 is provided with a torsion spring groove 63 for mounting the handle torsion spring 62 on the side facing the mounting cover 5, the extension 41 is provided with a first limiting block 412 and a second limiting block 413, and a limiting cavity 414 for the handle torsion spring 62 to be inserted is left between the first limiting block 412 and the second limiting block 413; The mounting cover 5 is provided with a sealing part 52 for sealing the torsion spring groove 63.

[0029] The design of this structure places both the torsion spring groove 63 and the handle torsion spring 62 on the side close to the mounting cover 5. When the mounting cover 5 is opened, the status of the handle torsion spring 62 can be easily observed, facilitating maintenance.

[0030] The present invention is further configured such that: a locking rod 44 is provided on the mounting base 4, a locking assembly 8 is provided on the locking rod 44, and a linkage rod 64 connects the handle body 61 and the locking assembly 8. The design of this linkage rod 64 is prior art, which enables the handle body 61 to drive the locking assembly 8 to perform a closing operation when rotated.

[0031] The present invention is further configured such that: a release rod 45 is provided on the mounting base 4, a release plate 46 is rotatably connected to the release rod 45, and a magnetic release component 47 is provided on the mounting base 4, which is used to push the release plate 46 to rotate.

[0032] The present invention is further configured such that: a first gear post 48 and a second gear post 49 are provided on the mounting base 4, and a first reduction gear 481 and a release gear 482 are rotatably connected to the first gear post 48; A second reduction gear 491 and a worm gear 492 are rotatably connected to the second gear column 49. One end of the worm gear 492 is provided with a linkage gear 493 that meshes with the first reduction gear 481. The second reduction gear 491 is respectively meshed with the first reduction gear 481 and the release gear 482; A tripping block 483 is provided on the tripping gear 482; A drive motor 40 is mounted on the mounting base 4, and the drive motor 40 is driven by a worm gear and worm wheel 492.

[0033] In this structure, both the first reduction gear 481 and the second reduction gear 491 are T-shaped gears, with a large gear with a larger diameter and a small gear with a smaller diameter at each end.

[0034] When the drive motor 40 controls the worm gear to rotate, the following transmission relationships occur in sequence: 1. The worm wheel 492 rotates; 2. The linkage gear 493 rotates; 3. The large gear of the first reduction gear 481 rotates; 4. The small gear of the first reduction gear 481 causes the large gear of the second reduction gear 491 to rotate; 5. The small gear of the second reduction gear 491 causes the release gear 482 to rotate; 6. The release block 483 on the release gear 482 pushes the release plate 46 to release the locking assembly 8.

[0035] The present invention is further configured such that: the two ends of the mounting base 4 are respectively provided with an inlet end 9 and an outlet end 91, and a moving contact 92 is connected to the locking assembly 8; the locking assembly 8 or the moving contact 92 is connected to the inlet end 9. The outgoing terminal 91 is connected to a stationary contact 93, which is arranged in a U-shape and has a through hole 94.

[0036] The design of this structure includes a through hole 94 on the stationary contact 93 to reasonably avoid the gear post, which facilitates the installation of the stationary contact 93.

[0037] The present invention is further configured such that: the control module 1 includes a control base 11, the control base 11 is installed on one side of the mounting cover 5, and a control cavity for placing the circuit board is formed between the control base 11 and the mounting cover 5.

[0038] The present invention is further configured such that: a connecting hole 53 is provided through the mounting cover 5, a mounting hole 31 is provided on the mounting bottom cover, and an assembly hole 12 is provided on the control base 11 corresponding to the connecting hole 53 and the mounting hole 31.

[0039] The design of this structure allows for simultaneous maintenance of the control cavity by disassembling one side of the control module 1.

[0040] Furthermore, the installation cover 5 can be removed to easily and intuitively see the handle position, leakage detection position, and tripping position, facilitating maintenance operations.

[0041] In addition to the main module 3, there are three sets of mechanical modules 2. These mechanical modules 2 can be linked with the main module 3 using existing linkage mechanisms. Since this part is not a protection point, all technologies that can be implemented based on existing technology can be reasonably utilized.

[0042] Furthermore, this device can be used not only on 4P circuit breakers, but also easily designed for 1P circuit breakers.

[0043] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A multi-module miniature circuit breaker, characterized in that: Along its length direction, it includes a control module (1) and multiple sets of mechanical modules (2), and the multiple sets of mechanical modules (2) include a main module (3) close to the control module (1); The main module (3) includes at least a mounting base (4) and a mounting cover (5), the mounting cover (5) being positioned close to the control module (1); The mounting base (4) has an extension (41) extending from its upper end. A handle post (42) and a detection cavity (43) are installed at the extension (41). A handle assembly (6) is provided on the handle post (42). The detection cavity (43) is equipped with a leakage current detection component (7); The mounting cover (5) includes a snap-fit ​​portion (51) located at the upper end. The diameter of the snap-fit ​​portion (51) is smaller than that of the extension portion (41). When the snap-fit ​​portion (51) is snapped into the extension portion (41), the snap-fit ​​portion (51) is used to block the detection cavity (43).

2. The multi-module miniature circuit breaker according to claim 1, characterized in that: The detection cavity (43) is provided with a first detection column (431) and a second detection column (432), and an installation gap (433) is formed between the first detection column (431) and the inner wall of the extension (41); The leakage current detection component (7) includes a detection spring (71) and a detection button (72). The detection spring (71) includes a mounting piece (711) and an abutment piece (712). The mounting piece (711) is arranged in an L-shape and is used to be inserted into the installation gap (433). The abutting piece (712) is disposed on the upper end of the mounting piece (711), and the detection button (72) is slidably connected to the extension (41) and abuts against the abutting piece (712).

3. A multi-module miniature circuit breaker according to claim 2, characterized in that: The inner wall of the extension (41) is recessed with a widening groove (411), and the snap-fit ​​part (51) is provided with a sealing part (511) for sealing the widening groove (411) and the installation gap (433).

4. A multi-module miniature circuit breaker according to claim 1, characterized in that: The handle assembly (6) includes a handle body (61) and a handle torsion spring (62). The handle body (61) has a torsion spring groove (63) for mounting the handle torsion spring (62) on the side facing the mounting cover (5). The extension (41) is provided with a first limiting block (412) and a second limiting block (413). A limiting cavity (414) for the handle torsion spring (62) to be inserted is left between the first limiting block (412) and the second limiting block (413). The mounting cover (5) is provided with a sealing part (52) for sealing the torsion spring groove (63).

5. A multi-module miniature circuit breaker according to claim 4, characterized in that: The mounting base (4) is provided with a locking rod (44), the locking rod (44) is provided with a locking assembly (8), and the handle body (61) is connected to the locking assembly (8) by a linkage rod (64).

6. A multi-module miniature circuit breaker according to claim 1, characterized in that: The mounting base (4) is provided with a release rod (45), and a release plate (46) is rotatably connected to the release rod (45). The mounting base (4) is provided with a magnetic release component (47), which is used to push the release plate (46) to rotate.

7. A multi-module miniature circuit breaker according to claim 6, characterized in that: The mounting base (4) is provided with a first gear column (48) and a second gear column (49), and a first reduction gear (481) and a release gear (482) are rotatably connected on the first gear column (48); The second gear column (49) is rotatably connected to a second reduction gear (491) and a worm gear (492), and one end of the worm gear (492) is provided with a linkage gear (493) that meshes with the first reduction gear (481); The second reduction gear (491) is meshed with the first reduction gear (481) and the release gear (482) respectively; The release gear (482) is provided with a release block (483); A drive motor (40) is mounted on the mounting base (4), and the drive motor (40) is driven by a worm and a worm wheel (492).

8. A multi-module miniature circuit breaker according to claim 5, characterized in that: The mounting base (4) is provided with an inlet (9) and an outlet (91) at its two ends respectively. A moving contact (92) is connected to the locking assembly (8). The locking assembly (8) or the moving contact (92) is connected to the inlet (9). The output terminal (91) is connected to a stationary contact (93), which is arranged in a U-shape and has a through hole (94).

9. A multi-module miniature circuit breaker according to claim 1, characterized in that: The control module (1) includes a control base (11), which is mounted on one side of the mounting cover (5) and forms a control cavity for placing the circuit board between the control base (11) and the mounting cover (5).

10. A multi-module miniature circuit breaker according to claim 9, characterized in that: The mounting cover (5) has a through hole (53), the mounting base (4) has a mounting hole (31), and the control base (11) has an assembly hole (12) corresponding to the connecting hole (53) and the mounting hole (31).

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