Miniature residual-current circuit breaker

Abstract

The miniature residual-current circuit breaker comprises a circuit breaker body and a connecting block, one end of the connecting block is elastically connected with a top block, the surface of the circuit breaker body is provided with two groups of connecting grooves which are symmetrically arranged on the upper side and the lower side of the circuit breaker body, and the connecting grooves are provided with side openings arranged on the side surfaces of the circuit breaker body. When the two circuit breaker bodies are spliced, the connecting grooves in the corresponding positions are communicated through the side openings, and the two ends of the connecting block are limited in the connecting grooves in the two circuit breaker bodies respectively. According to the utility model, the adjacent circuit breaker bodies can be connected by arranging the connecting blocks and the connecting grooves, so that when one circuit breaker body is operated, the other circuit breaker body adjacent to the circuit breaker body can share a certain external force, the installation stability of the circuit breaker is enhanced, and the circuit breaker has good practicability.

Description

Technical Field

[0001] The utility model relates to the field of circuit breakers, and more particularly to a small leakage circuit breaker. Background Art

[0002] A leakage circuit breaker, also known as a residual current circuit breaker (RCD), is connected to equipment via wires. It protects against leakage faults and potentially life-threatening electric shock. It also provides overload and short-circuit protection, protecting lines or motors from overload and short circuits. It is also used for infrequent line switching and starting under normal circumstances. Typically, multiple RCDs are installed side by side for easier management and maintenance. However, in actual use, each RCD is relatively independent and lacks additional support structures to share external forces. When an operator pulls the RCD handle, each RCD must independently withstand the upward and downward forces. Due to the limited resistance of individual RCDs, prolonged or frequent operation can cause some RCDs to gradually loosen. This loosening can not only affect the proper function of the RCD but also pose safety risks, such as poor contact, malfunction, or failure to disconnect the power supply in a timely manner. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a small leakage circuit breaker. By setting a connecting block to connect adjacent small leakage circuit breakers, the risk of loosening of the small leakage circuit breaker during installation and use can be effectively reduced and the stability can be improved.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The utility model provides a small leakage circuit breaker, comprising a circuit breaker body and a connecting block for connecting two adjacent circuit breaker bodies, one end of the connecting block being elastically connected to a top block, a connecting groove being provided on the surface of the circuit breaker body, two groups of the connecting grooves being provided and symmetrically arranged on the upper and lower sides of the circuit breaker body, the connecting grooves having a side opening provided on the side of the circuit breaker body, a stop being provided at one end of the connecting groove opposite to the side opening, when the two circuit breaker bodies are spliced together, the connecting grooves at corresponding positions are connected through the side opening, and the two ends of the connecting block are respectively confined within the connecting grooves on the two circuit breaker bodies.

[0006] The present invention is further configured as follows: the top block and the connecting block are integrally formed into a flat plate structure; a deformation groove is provided on the connecting block near one end of the top block, and the deformation groove runs through the thickness direction of the connecting block.

[0007] The utility model is further configured as follows: the deformation groove is elliptical.

[0008] The utility model is further configured as follows: the cross-section of the connecting groove is in a convex shape.

[0009] The utility model is further configured as follows: positioning protrusions are formed at the four corners of the outer circumference of the connecting block, and an entrance groove is provided at the edge of the front opening of the connecting groove. When the connecting block is installed in the connecting groove, the top block is compressed and the positioning protrusion is extended from the entrance groove into the connecting groove. After the connecting block is installed in the connecting groove, the top block releases the elastic force and displaces the connecting block by resisting against the stop table, thereby causing the positioning protrusion to be misaligned with the entrance groove, and at the same time, the positioning protrusion is resisted and cooperated with the side stop edge at the front opening of the connecting groove.

[0010] By adopting the above technical solution, the utility model has the following effects:

[0011] 1. The present invention optimizes the structure and design. By cooperating with the connecting block and the connecting groove, an effective connection between adjacent circuit breaker bodies is achieved. When two circuit breaker bodies are connected by the connecting block, they form a relatively stable whole. Therefore, when the handle of one circuit breaker is moved up and down, the other circuit breaker can share a certain amount of external force, thereby enhancing the stability of the entire system. This helps to reduce the vibration and impact caused by operating a single circuit breaker alone, protects the internal structure of the circuit breaker from damage, and has excellent practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A perspective view of an embodiment of the present utility model;

[0013] Figure 2 A three-dimensional diagram of a connecting block according to an embodiment of the present invention;

[0014] Figure 3 This is a cross-sectional view of the connecting block of the embodiment of the present utility model when installed in the connecting groove.

[0015] In the figure: 1, circuit breaker body; 12-connection groove; 13-entry groove; 14-side opening; 15-stop platform; 16, side stop edge; 2-connection block; 21-positioning protrusion; 22-deformation groove; 23-top block. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] The structure of the small leakage circuit breaker provided in the embodiment of the utility model is as follows Figures 1 to 3 As shown: it includes a circuit breaker body 1 and a connecting block 2 for connecting two adjacent circuit breaker bodies 1. The two circuit breaker bodies 1 are connected by the connecting block 2 so that they can jointly bear external forces in the upper and lower directions; one end of the connecting block 2 is elastically connected to a top block 23, and the surface of the circuit breaker body 1 is provided with a connecting groove 12. The connecting groove 12 is provided with two groups and is symmetrically arranged on the upper and lower sides of the circuit breaker body 1. The connecting groove 12 has a side opening 14 provided on the side of the circuit breaker body 1, and a stop 15 is provided at one end of the connecting groove 12 opposite to the side opening 14. The two circuit breaker bodies 1 are shaped When spliced, the corresponding connection slots 12 are connected through the side openings 14, and the ends of the connection block 2 are respectively confined within the connection slots 12 on the two circuit breaker bodies 1. This embodiment optimizes the structural design, and through the innovative connection block and connection slots 12, an effective connection between adjacent circuit breaker bodies is achieved. When the two circuit breaker bodies 1 are connected by the connection block 2, they form a relatively stable whole. When the handle of one circuit breaker is moved in the up and down direction, the other circuit breaker can share some of the external force, thereby enhancing the stability of the entire system. This helps to reduce the vibration and impact caused by operating a single circuit breaker, protects the internal structure of the circuit breaker from damage, and has excellent practicality.

[0018] See Figure 2 As shown, in order to facilitate production, it is preferred to set the top block 23 and the connecting block 2 as an integrally formed flat plate structure, which can be integrally formed by injection molding; more specifically, a deformation groove 22 is provided on the connecting block 2 near one end of the top block 23, and the deformation groove runs through the thickness direction of the connecting block 2 (that is, the deformation groove 22 is a through groove). The existence of the deformation groove 22 enables the top block 23 to be compressed and rebounded to a certain extent when subjected to external force, thereby realizing an elastic connection between the top block 23 and the connecting block 2.

[0019] Furthermore, the deformation groove 22 is elliptical, and the long axis direction of the ellipse is in the same direction as the width direction of the top block 23. Setting the deformation groove 22 to be elliptical is more conducive to better dispersing stress when the top block 23 is under pressure, reducing the occurrence of stress concentration points, and thus less likely to break.

[0020] In this embodiment, in order to adapt to the installation of the connecting block 2, it is preferred to set the cross-sectional shape of the connecting groove 12 to be a convex shape.

[0021] In some embodiments, combined Figure 1 and Figure 2As shown, positioning protrusions 21 are formed at the four corners of the outer periphery of the connecting block 2, and an entrance groove 13 is provided at the edge of the front opening of the connecting groove 12. When the connecting block 2 is installed in the connecting groove 12, the top block 23 is compressed and the positioning protrusion 21 is extended from the entrance groove 13 into the connecting groove 12. After the connecting block is installed in the connecting groove 12, the top block 23 releases the elastic force and displaces the connecting block 2 by resisting against the stopper 15, thereby causing the positioning protrusion 21 to be misaligned with the entrance groove 13. The positioning protrusion 21 forms a resisting fit with the side stop 16 at the front opening of the connecting groove 12 to prevent the connecting block 2 from detaching from the connecting groove 12 and ensure the connection effect of the connecting block 2 on the two adjacent circuit breaker bodies 1.

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A small leakage circuit breaker, comprising a circuit breaker body (1), characterized in that: It also includes a connecting block (2) for connecting two adjacent circuit breaker bodies (1), one end of the connecting block (2) is elastically connected to a top block (23), the surface of the circuit breaker body (1) is provided with a connecting groove (12), two groups of the connecting grooves (12) are provided and symmetrically arranged on the upper and lower sides of the circuit breaker body (1), the connecting groove (12) has a side opening (14) provided on the side of the circuit breaker body (1), and a stop (15) is provided at one end of the connecting groove (12) opposite to the side opening (14). When the two circuit breaker bodies (1) are spliced, the connecting grooves (12) at corresponding positions are connected through the side opening (14), and the two ends of the connecting block (2) are respectively limited in the connecting grooves (12) on the two circuit breaker bodies (1).

2. A small leakage circuit breaker according to claim 1, characterized in that: The top block (23) and the connecting block (2) are integrally formed into a flat plate structure. A deformation groove (22) is provided on the connecting block (2) at one end close to the top block (23). The deformation groove (22) runs through the thickness direction of the connecting block (2).

3. A small leakage circuit breaker according to claim 2, characterized in that: The deformation groove (22) is elliptical.

4. A small leakage circuit breaker according to claim 1, characterized in that: The cross-section of the connecting groove (12) is in the shape of a convex letter.

5. A small leakage circuit breaker according to claim 1, characterized in that: Positioning protrusions (21) are formed at the four corners of the outer periphery of the connecting block (2), and an entrance groove (13) is provided at the edge of the front opening of the connecting groove (12). When the connecting block (2) is installed in the connecting groove (12), the top block (23) is compressed and the positioning protrusion (21) is extended from the entrance groove (13) into the connecting groove (12). After the connecting block is installed in the connecting groove (12), the top block (23) releases its elastic force and displaces the connecting block (2) by abutting against the stopper (15), thereby causing the positioning protrusion (21) to be misaligned with the entrance groove (13). At the same time, the positioning protrusion (21) abuts against the side stop edge (16) at the front opening of the connecting groove (12).

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