Molded case circuit breaker with high stability

Abstract

The utility model discloses a molded case circuit breaker with high stability, which belongs to the field of molded case circuit breakers, and comprises a circuit breaker main body, the front end of the circuit breaker main body is provided with a front cover plate, the front cover plate is provided with a square hole, and the circuit breaker main body is provided with a circuit breaker switch. Through the arrangement of the fixing plate, the elastic abutting piece, the installation sliding plate and the adjustable installation structure, the circuit breaker body is installed on the adjustable installation structure through the cooperation of the elastic abutting piece and the fixing plate with the nut, the elastic abutting piece exerts elastic acting force after installation, and it is ensured that the circuit breaker body has good stability in use; according to the adjustable mounting structure, the situation of nut loosening can be avoided, normal use of the circuit breaker is guaranteed, a sliding mounting seat in the adjustable mounting structure is arranged on a mounting sliding plate and used in cooperation with a fixing block and an adjusting screw, the position of the sliding mounting seat can be adjusted, and then the position of the circuit breaker body is changed; and the adjusting screw rod and the sliding mounting seat have a self-locking effect, so that the stability after adjustment is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of molded case circuit breakers, and in particular to a molded case circuit breaker with high stability. Background Technology

[0002] A molded case circuit breaker (MCCB) is a mechanical switching device used to connect, carry, and disconnect current under normal circuit conditions, as well as to connect, carry, and disconnect current for a specified time under specified abnormal circuit conditions (such as overload, short circuit, etc.). It protects electrical appliances and circuits from damage caused by overcurrent, ensuring the safe operation of lines and electrical equipment.

[0003] Existing patent number CN217061943U discloses "A High-Stability Electronic Molded Case Circuit Breaker." In this patent, the fixing plates on the circuit breaker body are detachably connected to the upper and lower fixing hooks, enabling quick assembly and disassembly. However, in this patent, the circuit breaker is installed using a plug-in method without a clamping structure, resulting in poor stability during use. It is prone to shaking, which can affect the normal connection of the circuit. Furthermore, the circuit breaker cannot be adjusted in position after installation, limiting its use to a fixed location and reducing its flexibility and adaptability. Utility Model Content

[0004] The main objective of this invention is to provide a highly stable molded case circuit breaker that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A highly stable molded case circuit breaker includes a circuit breaker body, a front cover plate with a square hole at the front end of the circuit breaker body, a circuit breaker switch through the square hole in the front cover plate, a fixing plate on the circuit breaker body, an elastic abutment plate on the fixing plate, an adjustable mounting structure connected to the elastic abutment plate, and a mounting slide plate connected to the adjustable mounting structure.

[0007] Preferably, the circuit breaker body is provided with fastening screws, and the mounting plate is provided with waist-shaped countersunk holes, which are symmetrically arranged on the mounting plate.

[0008] Preferably, the fixing plate and the elastic clamping plate are provided with through holes, and the fixing plate and the elastic clamping plate are symmetrically distributed on the circuit breaker body.

[0009] Preferably, the adjustable mounting structure includes a sliding mounting base, fixing blocks, and mounting screws. The sliding mounting base is provided with a sliding groove, and the sliding mounting base is mounted on the mounting slide plate through the sliding groove. The two fixing blocks are fixed to the ends of the mounting slide plate by mounting screws.

[0010] Preferably, the adjustable mounting structure further includes an adjusting screw, an adjusting wheel, a plug-in post, and a connecting screw. The adjusting screw is mounted on the fixed block, and its end is fixedly connected to the adjusting wheel. The adjusting screw passes through the sliding mounting base and is threadedly connected to the sliding mounting base. The plug-in post and the connecting screw are fixedly connected, and the plug-in post is mounted on the sliding mounting base.

[0011] Compared with the prior art, this utility model has the following beneficial effects: This highly stable molded case circuit breaker, through the setting of a fixed plate, elastic clamping plate, mounting slide plate and adjustable mounting structure, uses the elastic clamping plate and fixed plate in conjunction with nuts to install the circuit breaker body onto the adjustable mounting structure. After installation, the elastic clamping plate applies elastic force to ensure that the circuit breaker body has good stability during use, which can prevent the nuts from loosening and ensure the normal use of the circuit breaker. The sliding mounting seat in the adjustable mounting structure is set on the mounting slide plate and used in conjunction with the fixed block and adjusting screw. The position of the sliding mounting seat can be adjusted, thereby changing the position of the circuit breaker body, improving the flexibility and adaptability of use. The adjusting screw and sliding mounting seat have a self-locking effect, ensuring the stability after adjustment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the main body of the circuit breaker of this utility model;

[0014] Figure 3 This is a schematic diagram of the adjustable mounting structure of this utility model.

[0015] In the diagram: 1. Circuit breaker body; 2. Front cover plate; 3. Circuit breaker switch; 4. Fastening screw; 5. Fixing plate; 6. Elastic clamping piece; 7. Through hole; 8. Mounting slide plate; 9. Adjustable mounting structure; 901. Sliding mounting base; 902. Fixing block; 903. Mounting screw; 904. Adjusting screw; 905. Adjusting wheel; 906. Plug-in post; 907. Connecting screw; 10. Slotted countersunk hole. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figures 1-3 As shown, a highly stable molded case circuit breaker includes a circuit breaker body 1. A front cover plate 2 is provided at the front end of the circuit breaker body 1, and the front cover plate 2 has a square hole. A circuit breaker switch 3 is provided on the circuit breaker body 1, and the circuit breaker switch 3 passes through the square hole in the front cover plate 2. A fixing plate 5 is provided on the circuit breaker body 1, and an elastic clamping piece 6 is provided on the fixing plate 5. An adjustable mounting structure 9 is connected to the elastic clamping piece 6, and a mounting slide plate 8 is connected to the adjustable mounting structure 9. Fastening screws 4 are provided on the circuit breaker body 1. The mounting slide plate 8 has oblong countersunk holes 10, and the oblong countersunk holes 10 are symmetrically arranged on the mounting slide plate 8. Through holes 7 are provided on the fixing plate 5 and the elastic clamping piece 6, and the fixing plate 5 and the elastic clamping piece 6 are symmetrically distributed on the circuit breaker body 1.

[0018] During the installation of the molded case circuit breaker, the mounting plate 8 is placed in the mounting position, and screws are inserted into the countersunk holes 10 to connect with the mounting position, thereby fixing the mounting plate 8. The adjustable mounting structure 9 is then placed on the mounting plate 8. The fixing plate 5 and the elastic clamping piece 6 on the circuit breaker body 1 are connected to the connecting structure in the adjustable mounting structure 9 and secured with nuts, thus placing the circuit breaker body 1 onto the adjustable mounting structure 9. After the circuit breaker is installed, the cable is connected to the fastening screw 4, connecting the circuit breaker body 1 to the circuit for use. During use, the circuit breaker switch 3, which passes through the hole above the front cover plate 2, is in the open state, and the circuit breaker is in normal operation. When an overload or short circuit occurs, the circuit breaker short-circuits, and the circuit breaker switch 3 trips to the closed state, effectively protecting the relevant electrical components and circuits.

[0019] During the operation of the circuit breaker, the elasticity of the elastic retaining plate 6 ensures that the nut is subjected to elastic force, preventing it from loosening even under vibration and guaranteeing operational stability. When needed, the adjustable mounting structure 9 can be used to adjust the circuit breaker position, providing greater flexibility and stability in its use.

[0020] According to the above implementation scheme, the adjustable mounting structure 9 includes a sliding mounting base 901, a fixing block 902, and mounting screws 903. The sliding mounting base 901 is provided with a sliding groove, and the sliding mounting base 901 is mounted on the mounting slide plate 8 through the sliding groove. The two fixing blocks 902 are fixed to the ends of the mounting slide plate 8 by mounting screws 903. The adjustable mounting structure 9 also includes an adjusting screw 904, an adjusting wheel 905, a plug-in post 906, and a connecting screw 907. The adjusting screw 904 is disposed on the fixing block 902, and the end of the adjusting screw 904 is fixedly connected to the adjusting wheel 905. The adjusting screw 904 passes through the sliding mounting base 901 and is threadedly connected to the sliding mounting base 901. The plug-in post 906 is fixedly connected to the connecting screw 907, and the plug-in post 906 is mounted on the sliding mounting base 901.

[0021] During the installation of the adjustable mounting structure 9, the adjusting screw 904 is connected to the sliding mounting base 901. Fixing blocks 902 are located at both ends of the adjusting screw 904. The sliding mounting base 901 is placed on the mounting slide plate 8, with the fixing blocks 902 positioned at both ends of the mounting slide plate 8. The fixing blocks 902 are then fixed to the mounting slide plate 8 using mounting screws 903, thus completing the fixed connection between the adjustable mounting structure 9 and the mounting slide plate 8. After the adjustable mounting structure 9 is installed, the circuit breaker is installed. The fixing plate 5 and the elastic clamping piece 6 are fitted onto the plug-in post 906 through the through hole 7. The connecting screw 907 passes through the fixing plate 5, and a nut is placed on the connecting screw 907 to compress the elastic clamping piece 6, thereby fixing the circuit breaker body 1. After connecting the cables, it is ready for use.

[0022] When it is necessary to adjust the position of the circuit breaker, the adjusting screw 904 on the fixed block 902 is rotated by the adjusting wheel 905. Driven by the adjusting screw 904, the sliding mounting base 901 moves along the mounting plate 8 through the sliding groove. This moves the circuit breaker body 1 through the plug post 906, connecting screw 907, nut, elastic clamping piece 6, and fixed plate 5, thereby changing the position of the circuit breaker and improving its stability and flexibility. After adjustment, the sliding mounting base 901 and the adjusting screw 904 have a self-locking effect, making the circuit breaker more stable in use.

[0023] It should be noted that, through the fixed plate 5, elastic clamping piece 6, mounting slide plate 8, and adjustable mounting structure 9, the circuit breaker body 1 is installed onto the adjustable mounting structure 9 by using the elastic clamping piece 6 and the fixed plate 5 in conjunction with the nut. After installation, the elastic clamping piece 6 applies an elastic force to ensure that the circuit breaker body 1 has good stability during use, which can prevent the nut from loosening and ensure the normal use of the circuit breaker. The sliding mounting seat 901 in the adjustable mounting structure 9 is set on the mounting slide plate 8 and is used in conjunction with the fixed block 902 and the adjusting screw 904. The position of the sliding mounting seat 901 can be adjusted, thereby changing the position of the circuit breaker body 1, improving the flexibility and adaptability of use. The adjusting screw 904 and the sliding mounting seat 901 have a self-locking effect, ensuring the stability after adjustment.

[0024] The foregoing describes the working principle, features, and beneficial effects of this utility model. Those skilled in the art will understand from the foregoing that it does not limit the utility model. The embodiments and description above illustrate the basic principles and features of this utility model. Various changes and improvements can be made to this utility model while remaining consistent with its concept, and all such improvements should fall within the scope of protection claimed by this utility model.

Claims

1. A moulded case circuit breaker with high stability, comprising a circuit breaker body (1), a front cover plate (2) is arranged at the front end of the circuit breaker body (1), and a square hole is arranged on the front cover plate (2), the circuit breaker body (1) is provided with a circuit breaker switch (3), and the circuit breaker switch (3) penetrates through the square hole on the front cover plate (2), characterized in that: The circuit breaker body (1) is provided with a fixed plate (5), and the fixed plate (5) is provided with an elastic abutting piece (6), the elastic abutting piece (6) is connected with an adjustable mounting structure (9), and the adjustable mounting structure (9) is connected with a mounting sliding plate (8). ​ 2. The molded case circuit breaker of claim 1, wherein: The circuit breaker body (1) is provided with a fastening screw (4), the mounting sliding plate (8) is provided with a waist type counterbore (10), and the waist type counterbore (10) is symmetrically arranged on the mounting sliding plate (8).

3. The molded case circuit breaker of claim 2, wherein: The fixed plate (5) and the elastic abutting piece (6) are provided with through holes (7), and the fixed plate (5) and the elastic abutting piece (6) are symmetrically distributed on the circuit breaker body (1).

4. The molded case circuit breaker of claim 3, wherein: The adjustable mounting structure (9) comprises a sliding mounting seat (901), a fixed block (902) and a mounting screw (903), the sliding mounting seat (901) is provided with a sliding groove, and the sliding mounting seat (901) is mounted on the mounting sliding plate (8) through the sliding groove, and the two fixed blocks (902) are fixed on the ends of the mounting sliding plate (8) through the mounting screw (903).

5. The molded case circuit breaker of claim 4, wherein: The adjustable mounting structure (9) further comprises an adjusting screw (904), an adjusting wheel (905), a plug-in column (906) and a connecting screw (907), the adjusting screw (904) is arranged on the fixed block (902), and the tail end of the adjusting screw (904) is fixedly connected with the adjusting wheel (905), the adjusting screw (904) penetrates through the sliding mounting seat (901), and the adjusting screw (904) is screw-connected with the sliding mounting seat (901), the plug-in column (906) and the connecting screw (907) are fixedly connected, and the plug-in column (906) is mounted on the sliding mounting seat (901).

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