Assembly structure of circuit breaker

Abstract

The utility model discloses an assembling structure of a circuit breaker, which comprises a rear shell, a front shell is arranged at the front side of the rear shell, first grooves are arranged at the upper part and the lower part of the rear shell, binding posts are arranged in the first grooves, second grooves are arranged at the upper part and the lower part of the front shell, and the binding posts are arranged in the second grooves. A second groove is formed in the front shell, an insertion plate is fixedly connected into the second groove, a positioning groove is formed in the rear shell, a first front panel and a second front panel are connected to the front of the front shell, a plurality of connecting lugs are fixedly connected to the front shell, and mounting holes are formed in the connecting lugs. According to the utility model, the upper part and the lower part of the rear shell are provided with the first grooves, the binding posts are arranged in the first grooves, and the second grooves are arranged at the corresponding positions of the front shell, so that the binding posts are ensured not to be interfered by the shell structure during installation, and the stability of the binding posts after installation is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breaker technology, and in particular relates to an assembly structure for a circuit breaker. Background Technology

[0002] As a key piece of equipment in power systems, circuit breakers primarily function to protect circuits. When overloads or short circuits occur, circuit breakers quickly interrupt the current, preventing further escalation of the accident. With increasing industrial automation and heightened demands for power system reliability and safety, circuit breaker design requires not only excellent electrical performance but also a reliable mechanical structure. In recent years, the application of new materials and processes has led to miniaturization and intelligentization in circuit breaker design, enabling higher performance within a smaller space. However, in practical applications, the traditional assembly structure of circuit breakers still has many shortcomings, particularly in assembly efficiency, ease of disassembly, and maintenance costs.

[0003] Specifically, during assembly, it is crucial to ensure the protection of critical components such as terminals, which is essential for improving the overall performance of the circuit breaker. Furthermore, as power equipment trends towards miniaturization and lightweight design, achieving efficient assembly within limited space while maintaining the relative positions of components presents a challenge for designers. In particular, the connection between the front and rear housings, if not properly positioned, will affect the circuit breaker's operational performance and long-term stability. Therefore, we propose an assembly structure for the circuit breaker. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide an assembly structure for a circuit breaker. By providing front and rear outer shells and first and second grooves, the terminal blocks are positioned to accurately determine the installation location and facilitate wiring. A plug plate is fixedly connected inside the second groove, and a positioning groove is provided inside the rear outer shell to achieve precise positioning and prevent incorrect assembly.

[0005] This utility model is implemented as follows: an assembly structure for a circuit breaker includes a rear housing, a front housing on the front side of the rear housing, a first groove on the upper and lower parts of the rear housing, a terminal block inside the first groove, a second groove on the upper and lower parts of the front housing, a plug plate fixedly connected inside the second groove, a positioning groove inside the rear housing, a first front panel and a second front panel connected to the front of the front housing, a plurality of connecting ears fixedly connected to the front housing, mounting holes on the connecting ears, and an opening on the front side of the rear housing communicating with the first and second front panels.

[0006] Optionally, the upper and lower parts of the rear housing are respectively provided with a first mounting block, and two upright plates are fixedly connected to the upper part of the first mounting block.

[0007] Optionally, a rectangular tube is provided between the two upright plates, and the rectangular tube has a threaded hole inside.

[0008] Optionally, the upper and lower parts of the front housing are respectively provided with second mounting blocks, the second mounting blocks having countersunk holes, and the second mounting blocks being connected to the rectangular tube by first bolts.

[0009] Optionally, the connecting ear is connected to the first front panel by a second bolt, and the first front panel has a switch clearance window.

[0010] Optionally, the connecting ear is connected to the second front panel by a third bolt, and the front housing is provided with a stepped portion, with slots on both sides of the stepped portion.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. By providing first grooves on the upper and lower parts of the rear housing and installing terminals in the first grooves, and providing second grooves at corresponding positions on the front housing, it is ensured that the terminals are not interfered with by the housing structure during installation, thus ensuring the stability of the terminals after installation.

[0013] 2. The rear housing has a positioning groove inside, enabling precise positioning. This groove engages with the insert plate, ensuring accurate alignment of the front housing with the rear housing during assembly. The positioning groove prevents misalignment of the front housing during assembly, ensuring precise alignment between the front and rear housings, thus guaranteeing the consistency and integrity of the entire circuit breaker assembly structure. This improves assembly quality, reduces product failure rates due to assembly errors, and enhances overall product reliability.

[0014] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the front panel after removal, provided by this utility model;

[0017] Figure 3 This is a schematic diagram of the rear outer shell provided by this utility model;

[0018] Figure 4 This is a schematic diagram of the front shell provided by this utility model.

[0019] In the diagram: 1. Rear housing; 2. Front housing; 3. Second front panel; 4. First front panel; 5. Terminal block; 6. First groove; 7. Second groove; 8. Opening; 9. Connecting lug; 10. Countersunk hole; 11. Insert plate; 12. First mounting block; 13. Vertical plate; 14. Rectangular tube; 15. Positioning groove; 16. Second mounting block; 17. First bolt; 18. Slot; 19. Switch clearance window; 20. Step section. Detailed Implementation

[0020] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0021] like Figures 1 to 4 As shown in the figure, an assembly structure for a circuit breaker is provided in this embodiment of the present invention.

[0022] The device includes a rear outer shell 1, a front outer shell 2 on the front side of the rear outer shell 1, a first groove 6 on the upper and lower parts of the rear outer shell 1, a terminal block 5 inside the first groove 6, a second groove 7 on the upper and lower parts of the front outer shell 2, a plug plate 11 fixedly connected inside the second groove 7, a positioning groove 15 inside the rear outer shell 1, a first front panel 4 and a second front panel 3 connected to the front of the front outer shell 2, a plurality of connecting ears 9 fixedly connected to the front outer shell 2, mounting holes on the connecting ears 9, and an opening 8 on the front side of the rear outer shell 1 communicating with the first front panel 4 and the second front panel 3.

[0023] The upper and lower parts of the rear outer shell 1 are respectively provided with first mounting blocks 12, and two upright plates 13 are fixedly connected to the upper part of the first mounting blocks 12.

[0024] First mounting blocks 12 are respectively installed on the upper and lower parts of the rear housing 1. This design provides a stable foundation for subsequent structural connections. Two upright plates 13 are fixedly connected to the upper part of the first mounting blocks 12. These upright plates 13 not only enhance the overall rigidity of the rear housing 1, but also provide mounting points for other components, such as rectangular tubes 14. The installation of the upright plates 13 can better distribute stress, reduce the risk of deformation due to external forces during use, and thus improve the durability of the circuit breaker.

[0025] A rectangular tube 14 is provided between the two upright plates 13, and a threaded hole is provided inside the rectangular tube 14.

[0026] A rectangular tube 14 is installed between the two upright plates 13. Threaded holes inside the rectangular tube 14 can be used to fix other components, such as the second mounting block 16. The rectangular tube 14 not only increases the strength of the structure but also facilitates subsequent assembly. Through the threaded holes, screws and other fasteners can be easily used to fix other parts to the rectangular tube 14, thereby achieving modular assembly.

[0027] The upper and lower parts of the front housing 2 are respectively provided with second mounting blocks 16, and the second mounting blocks 16 are provided with countersunk holes 10. The second mounting blocks 16 are connected to the rectangular tube 14 by the first bolt 17.

[0028] The upper and lower parts of the front housing 2 are respectively provided with second mounting blocks 16. The countersunk holes 10 opened on the second mounting blocks 16 can be used to hide the bolt heads, making the surface smoother and more aesthetically pleasing. The second mounting blocks 16 are connected to the rectangular tube 14 by the first bolt 17. This connection method not only ensures a tight connection between the front housing 2 and the rear housing 1, but also facilitates disassembly and maintenance.

[0029] The connecting ear 9 is connected to the first front panel 4 by the second bolt, and the first front panel 4 has a switch clearance window 19.

[0030] The connecting lug 9 is connected to the first front panel 4 by a second bolt, a design that ensures a secure connection between the first front panel 4 and the front housing 2. The switch clearance window 19 on the first front panel 4 provides sufficient space for the circuit breaker's switching operation, making operation more convenient, and also facilitating heat dissipation and ventilation.

[0031] The connecting ear 9 is connected to the second front panel 3 by the third bolt. The front outer shell 2 is provided with a stepped part 20, and both sides of the stepped part 20 are provided with slots 18.

[0032] The connecting lug 9 is connected to the second front panel 3 via a third bolt, a design also intended to ensure a tight connection between the front panel and the housing. The stepped portion 20 on the front housing 2 not only serves to secure the second front panel 3 but also provides a positioning reference for other components. The slots 18 on both sides of the stepped portion 20 can be used to secure cables or other accessories, ensuring their stable position inside the circuit breaker and preventing loosening due to vibration or other reasons.

[0033] Working principle: The upper and lower parts of the rear housing 1 are provided with first grooves 6 for positioning the installation position of the terminal block 5 to prevent incorrect installation. The upper and lower parts of the front housing 2 are provided with second grooves 7 to provide space for cable installation. The insert plate 11 is fixedly connected inside the second groove 7. The interior of the rear housing 1 is provided with a positioning groove 15. The insert plate 11 is inserted into the positioning groove 15 for precise positioning. The front of the front housing 2 is connected with a first front panel 4 and a second front panel 3. The first front panel 4 and the second front panel 3 are arc-shaped protrusions to expand the space of the internal components of the circuit breaker and facilitate maintenance. Several connecting ears 9 are fixedly connected to the front housing 2. The connecting ears 9 are provided with mounting holes for connecting the first front panel 4 and the second front panel 3 for positioning.

[0034] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assembly structure for a circuit breaker, comprising a rear housing (1), characterized in that: The rear outer shell (1) has a front outer shell (2) on its front side. The upper and lower parts of the rear outer shell (1) are provided with a first groove (6). The first groove (6) is provided with a terminal block (5). The upper and lower parts of the front outer shell (2) are provided with a second groove (7). The second groove (7) is fixedly connected with a plug plate (11). The rear outer shell (1) is provided with a positioning groove (15). The front part of the front outer shell (2) is connected with a first front panel (4) and a second front panel (3). The front outer shell (2) is fixedly connected with a plurality of connecting ears (9). The connecting ears (9) are provided with mounting holes. The front side of the rear outer shell (1) is provided with an opening (8) that communicates with the first front panel (4) and the second front panel (3).

2. The assembly structure of a circuit breaker according to claim 1, characterized in that: The upper and lower parts of the rear outer shell (1) are respectively provided with a first mounting block (12), and two upright plates (13) are fixedly connected to the upper part of the first mounting block (12).

3. The assembly structure of a circuit breaker according to claim 2, characterized in that: A rectangular tube (14) is provided between the two upright plates (13), and the interior of the rectangular tube (14) is provided with a threaded hole.

4. The assembly structure of a circuit breaker according to claim 3, characterized in that: The upper and lower parts of the front housing (2) are respectively provided with second mounting blocks (16), and the second mounting blocks (16) are provided with countersunk holes (10). The second mounting blocks (16) are connected to the rectangular tube (14) by first bolts (17).

5. The assembly structure of a circuit breaker according to claim 1, characterized in that: The connecting ear (9) is connected to the first front panel (4) by a second bolt, and the first front panel (4) is provided with a switch clearance window (19).

6. The assembly structure of a circuit breaker according to claim 1, characterized in that: The connecting ear (9) is connected to the second front panel (3) by a third bolt. The front outer shell (2) is provided with a stepped part (20), and the stepped part (20) is provided with slots (18) on both sides.

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