Wiring terminal assembly for circuit breaker and residual-current circuit breaker

Abstract

The utility model discloses a wiring terminal assembly for a circuit breaker, which is not easy to deform, good in wiring firmness and high in temperature rise and fall, and a residual-current circuit breaker. According to the technical scheme, the wiring structure comprises a wiring frame, a wiring board connected to one side of the wiring frame and a wiring screw connected to the upper end of the wiring frame, the wiring board comprises a wire pressing part arranged in the wiring frame and a welding part extending out of the wiring frame, and a reinforcing plate is arranged on the end face of the wire pressing part. The reinforcing plate is riveted with riveting blocks on two sides of the wire pressing part through riveting grooves on two sides, and positioning edges positioned at the bottom of the reinforcing plate are arranged on two sides, corresponding to the riveting blocks, of the wire pressing part.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breakers, and in particular relates to a terminal block assembly for circuit breakers. Background Technology

[0002] A residual current device (RCD), also known as a residual current circuit breaker, is primarily used to protect against electrical leakage faults in equipment and to protect against potentially fatal electric shocks. The RCD is connected to terminal blocks at both ends. Traditional terminal blocks consist of a wiring frame, a terminal block attached to one side of the frame, and a wiring screw attached to the top of the frame. The terminal block includes a wire clamping section within the frame and a soldered section extending beyond the frame. The disadvantages of this system are: 1) The terminal block is prone to deformation during wiring, resulting in poor wiring stability and increased temperature; 2) The connection stability between the terminal block and the circuit breaker is poor. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a circuit breaker terminal assembly and a residual current circuit breaker that is not easily deformed, has good wiring firmness, and has low temperature rise and fall.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a wiring frame, a wiring plate connected to one side of the wiring frame, and a wiring screw connected to the upper end of the wiring frame. The wiring plate includes a wire pressing part placed inside the wiring frame and a welding part extending out of the wiring frame. The end face of the wire pressing part is provided with a reinforcing plate. The reinforcing plate is riveted to the riveting blocks on both sides of the wire pressing part through riveting grooves on both sides. The wire pressing part is provided with positioning edges positioned at the bottom of the reinforcing plate on both sides corresponding to the riveting blocks.

[0005] The terminal block assembly is characterized in that: first positioning protrusions are provided on both sides of the front end of the wire pressing part.

[0006] The terminal block assembly is characterized in that: a second positioning protrusion is provided on one side of the terminal block.

[0007] The terminal block assembly is characterized in that: the lower end face of the wire pressing part is provided with a set of spaced upper "V" shaped grooves, and the bottom of the wiring frame is provided with a set of spaced lower "V" shaped grooves, the positions of the upper "V" shaped grooves and the positions of the lower "V" shaped grooves are staggered.

[0008] The terminal block assembly is characterized in that: the terminal block is made of copper plate and the reinforcing plate is made of iron plate.

[0009] The terminal block assembly is characterized in that: a positioning part is provided at the rear end of the welding part.

[0010] A residual current circuit breaker includes a housing, characterized in that: a terminal assembly as described above is provided on one side of the housing, and a first positioning groove, a second positioning groove and a third positioning groove are also provided inside the housing.

[0011] The advantages of this utility model of circuit breaker terminal assembly and residual current circuit breaker are as follows: 1. By setting a reinforcing plate on the end face of the wire pressing part of the terminal block, the terminal block has the advantages of being less prone to deformation, having good wiring firmness, and being resistant to temperature rise and fall; 2. The connection stability between the reinforcing plate and the terminal block is good, and it is not easy to fall off or shift; 3. The connection stability with the circuit breaker is better because the terminal block is positioned with the housing through multiple positioning structures.

[0012] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the terminal block assembly for the circuit breaker of this utility model;

[0014] Figure 2 This is a cross-sectional view of the terminal block assembly for the circuit breaker of this utility model;

[0015] Figure 3 This is an exploded view of the terminal block assembly for the circuit breaker of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the junction box of this utility model;

[0017] Figure 5 This is a schematic diagram of the connection between the terminal block and the reinforcing plate of this utility model;

[0018] Figure 6 This is a schematic diagram of the residual current circuit breaker of this utility model;

[0019] Figure 7 This is a schematic diagram of the structure of the shell of this utility model. Detailed Implementation Example 1

[0020] Reference Figures 1-5 As shown, the circuit breaker terminal assembly of this utility model includes a terminal frame 1, a terminal plate 2 connected to one side of the terminal frame 1, and a terminal screw 3 connected to the upper end of the terminal frame 1. The terminal plate 2 includes a wire pressing part 4 placed inside the terminal frame 1 and a welding part 5 extending out of the terminal frame 1. The end face of the wire pressing part 4 is provided with a reinforcing plate 6. The reinforcing plate 6 is riveted to the rivet blocks 8 on both sides of the wire pressing part 4 through rivet grooves 7 on both sides, and the wire pressing part 4 is provided with positioning edges 9 on both sides corresponding to the rivet blocks 8, which are positioned at the bottom of the reinforcing plate 6. The terminal plate 2 is made of copper plate, which has the advantage of good conductivity; the reinforcing plate 6 is made of iron plate, which has the advantage of good hardness.

[0021] Preferably, the front end of the wire pressing part 4 is provided with first positioning protrusions 10 on both sides. The terminal block 2 is provided with a second positioning protrusion 11 on one side. The rear end of the welding part 5 is provided with a positioning part 14. By positioning with the housing through the above three positioning structures, the stability of the connection between the part and the housing can be greatly improved.

[0022] Preferably, the lower end face of the wire pressing part 4 is provided with a set of spaced upper "V" shaped grooves 12, and the bottom of the wiring frame 1 is provided with a set of spaced lower "V" shaped grooves 13. The positions of the upper "V" shaped grooves 12 and the lower "V" shaped grooves 13 are staggered. This improves the anti-slip performance of the end face, thereby improving the stability of the wiring. Example 2

[0023] Reference Figures 6-7 As shown, the residual current circuit breaker of this utility model includes a housing 15. A terminal assembly a as described in Embodiment 1 is provided on one side of the housing 15, and a first positioning groove 16, a second positioning groove 17, and a third positioning groove 18 are also provided inside the housing 15. The first positioning groove 16, the second positioning groove 17, and the third positioning groove 18 respectively engage with the first positioning protrusion 1, the second positioning protrusion 11, and the positioning part 14 for positioning.

[0024] As stated above, this is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A terminal block assembly for a circuit breaker, comprising a terminal block (1), a terminal plate (2) connected to one side of the terminal block (1), and a terminal screw (3) connected to the upper end of the terminal block (1), characterized in that: The terminal block (2) includes a wire pressing part (4) placed inside the terminal frame (1) and a welding part (5) extending out of the terminal frame (1). The end face of the wire pressing part (4) is provided with a reinforcing plate (6). The reinforcing plate (6) is riveted to the riveting blocks (8) on both sides of the wire pressing part (4) through the riveting grooves (7) on both sides. The wire pressing part (4) is provided with positioning edges (9) on both sides of the riveting blocks (8) positioned at the bottom of the reinforcing plate (6).

2. The terminal block assembly according to claim 1, characterized in that: The front end of the pressure part (4) is provided with first positioning protrusions (10).

3. The terminal block assembly according to claim 1, characterized in that: The wiring board (2) is provided with a second positioning protrusion (11) on one side.

4. The terminal block assembly according to claim 1, characterized in that: The lower end face of the pressure part (4) is provided with a set of spaced upper "V" shaped grooves (12), and the bottom of the wiring frame (1) is provided with a set of spaced lower "V" shaped grooves (13). The positions of the upper "V" shaped grooves (12) and the lower "V" shaped grooves (13) are staggered.

5. The terminal block assembly according to claim 1, characterized in that: The terminal block (2) is made of copper plate, and the reinforcing plate (6) is made of iron plate.

6. The terminal block assembly according to claim 1, characterized in that: The welding part (5) is provided with a positioning part (14) at its rear end.

7. A residual current circuit breaker, comprising a housing (15), characterized in that: The housing (15) has a terminal block assembly (a) as described in any one of claims 1-6 on one side, and the housing (15) also has a first positioning groove (16), a second positioning groove (17) and a third positioning groove (18).

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