Wiring structure of circuit breaker

Abstract

The utility model belongs to the technical field of circuit breakers, and particularly relates to a wiring structure of a circuit breaker, which comprises a shell and a wiring assembly, and is characterized in that the wiring assembly comprises a wiring board, the wiring board is provided with an abutting part, and the abutting part comprises an L-shaped crimping end face; the wire holder is movably installed in the shell in the Z direction, an elastic pressing piece capable of swinging in the Z direction is arranged on the wire holder, and the elastic pressing piece is also of an L-shaped structure and is provided with a limiting hole; the fastening screw is rotatably arranged in the shell and is in threaded connection with the wire holder; an electric wire of an external circuit penetrates through the limiting hole, and the elastic pressing sheet and the abutting part are used for clamping and fixing the electric wire in the Z direction; the beneficial effects of the utility model are that the elastic pressing sheet and the crimping end face of the abutting portion are both L-shaped structures, and the elastic pressing sheet and the abutting portion clamp the electric wire, so that the electric wire is bent, the crimping area is increased, the resistance borne by the electric wire when the electric wire is pulled is reduced, the electric wire is prevented from being pulled out easily, and the wiring firmness is improved.

Description

Technical Field

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

[0002] A circuit breaker is an automatic safety switch used to protect circuits from damage caused by overload or short circuit. It is an indispensable electrical device in modern power systems and is widely used in homes, businesses, and industries.

[0003] In the existing technology, the wiring structure of most circuit breakers consists of fastening screws, terminal blocks, and terminal sockets. The terminal blocks and terminal sockets are threadedly connected to the fastening screws. By rotating the fastening screws, the terminal blocks and terminal sockets are driven to move closer together, and the wires are clamped by the terminal blocks and terminal sockets to realize the wiring of the circuit breaker. However, this wiring structure has the risk of insecure connection. Utility Model Content

[0004] The purpose of this utility model is to provide a wiring structure for a circuit breaker to address the aforementioned technical problems.

[0005] In view of this, the present invention provides a wiring structure for a circuit breaker, including a housing and a wiring assembly, characterized in that the wiring assembly includes:

[0006] A terminal block, wherein the terminal block is provided with an abutment portion, the abutment portion including an "L"-shaped crimping end face;

[0007] The terminal block is movable in the housing along the Z direction. The terminal block is provided with an elastic pressure plate that can swing along the Z direction. The elastic pressure plate is also an "L" shaped structure and has a limit hole.

[0008] Fastening screws are rotatably disposed within the housing and threadedly connected to the terminal block;

[0009] The external circuit wires are installed by passing through the limiting holes, and the elastic pressure plate and the abutment part are used to clamp and fix the wires along the Z direction.

[0010] Furthermore, the contact part includes:

[0011] A connecting piece, on which a connecting hole is provided;

[0012] The abutment piece has an "L" shaped structure.

[0013] Furthermore, the abutment piece also includes a raised strip arranged along the Y direction.

[0014] Furthermore, there are several protrusions, and these protrusions are arranged at equal intervals along the X direction.

[0015] Furthermore, a positioning block is provided on the terminal block, and the positioning block has a snap-fit ​​hole.

[0016] The beneficial effects of this utility model are:

[0017] When wiring external circuits to a circuit breaker, insert the wire into the terminal block and pass it through the limiting hole. Then, use a screwdriver to tighten the fastening screw, causing the terminal block to move. As the terminal block moves, the abutment part approaches and compresses the elastic pressure plate, causing the elastic pressure plate to swing downwards around the connection point. Simultaneously, the elastic pressure plate has an upward reset tendency, causing it to press firmly against the abutment part. The wire is firmly clamped between the elastic pressure plate and the abutment part. Both the crimping ends of the elastic pressure plate and the abutment part have an "L"-shaped structure, which, while clamping the wire, also bends the wire, increasing the crimping area and the resistance when the wire is pulled, preventing the wire from being easily pulled out and improving the wiring's security. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the circuit breaker of this utility model;

[0019] Figure 2 This is a schematic diagram of the wiring assembly in this utility model;

[0020] Figure 3 This is a schematic diagram of the wiring assembly from another perspective in this utility model;

[0021] Figure 4 This is a structural cross-sectional view of the wiring assembly in this utility model;

[0022] The markings in the diagram are as follows:

[0023] 1. Housing; 2. Terminal block; 3. Terminal block; 4. Elastic pressure plate; 5. Limiting hole; 6. Fastening screw; 7. Connecting piece; 8. Abutment piece; 9. Protrusion; 10. Positioning block; 11. Snap-fit ​​hole; 12. Groove. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] Example 1:

[0027] This embodiment provides a wiring structure for a circuit breaker, including a housing 1 and a wiring assembly, characterized in that the wiring assembly includes:

[0028] Terminal block 2, which has an abutment part, including an "L"-shaped crimping end face;

[0029] Terminal block 3 is installed in housing 1 and can be moved along the Z direction. Terminal block 3 is provided with elastic pressure plate 4 that can swing along the Z direction. Elastic pressure plate 4 is also "L" shaped and has limit hole 5.

[0030] Fastening screw 6 is rotatably disposed inside housing 1 and threadedly connected to terminal block 3;

[0031] The external circuit wires are installed by passing through the limiting hole 5, and the elastic pressure plate 4 and the abutment part are used to clamp and fix the wires along the Z direction.

[0032] Furthermore, a groove 12 is provided on the terminal block 3, and an elastic pressure plate 4 is disposed in the groove 12.

[0033] In this technical solution, the terminal block 2 is installed inside the housing 1. A limiting structure is provided inside the housing 1 to fix the terminal block 2 inside the housing 1, and the abutment portion is integrally connected to the terminal block 2. The terminal block 3 is movable within the housing 1 along the Z-direction. The terminal block 3 has a ring-shaped structure and is sleeved on the abutment portion. A groove 12 is provided on the inner wall of the terminal block 3 on the side away from the abutment portion. An integrally connected elastic pressure plate 4 is provided within the groove 12. The elastic pressure plate 4 has a limiting hole 5 and an arc-shaped curved surface structure, allowing it to swing around the connection point. A fastening screw 6 is rotatably installed inside the housing 1 and threadedly connected to the terminal block 3.

[0034] With the above structural design, when the external circuit is connected to the circuit breaker, the wire is inserted into the terminal block 3, and the head of the wire enters the limiting hole 5 along the arc surface and passes through the limiting hole 5. Then, the fastening screw 6 is turned by using a screwdriver to move the terminal block 3. As the terminal block 3 moves, the abutment part approaches and squeezes the elastic pressure plate 4, causing the elastic pressure plate 4 to swing downward around the connection. At the same time, the elastic pressure plate 4 has an upward reset tendency, so that the elastic pressure plate 4 presses against the abutment part upward, and the wire is firmly clamped between the elastic pressure plate 4 and the abutment part.

[0035] Both the elastic clamping plate 4 and the pressing end face of the abutment part have an "L" shape structure. This allows the elastic clamping plate 4 and the abutment part to clamp the wire while simultaneously bending the wire, increasing the pressing area and the resistance the wire encounters when pulled. This effectively prevents the wire from being easily pulled out and improves the wiring's stability. In addition, a rounded transition structure is provided at the bend between the elastic clamping plate 4 and the abutment part to prevent the wire from being bent and broken.

[0036] Example 2:

[0037] This embodiment provides a wiring structure for a circuit breaker, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] Furthermore, the contact part includes:

[0039] Connecting piece 7, with connecting holes provided on it;

[0040] Abutting piece 8, which has an "L" shaped structure.

[0041] Through this structural design, the abutment part is designed as a connecting piece 7 and an abutment piece 8, and a hollow structure is formed between the connecting piece 7 and the abutment piece 8, so that the terminal block 2 has an "L"-shaped crimping end face, while reducing material input, effectively reducing production costs and improving economic efficiency.

[0042] Example 3:

[0043] This embodiment provides a wiring structure for a circuit breaker, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0044] Furthermore, the abutment piece 8 also includes a raised strip 9 arranged along the Y direction.

[0045] Furthermore, there are several protrusions 9, and these protrusions 9 are arranged at equal intervals along the X direction.

[0046] In this technical solution, by setting several protruding strips 9, the pressing area between the abutment piece 8 and the elastic pressure piece 4 is increased, thereby effectively improving the connection firmness of the wire and making it highly practical.

[0047] Example 4:

[0048] This embodiment provides a wiring structure for a circuit breaker, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] Furthermore, a positioning block 10 is provided on the terminal block 3, and the positioning block 10 has a snap-fit ​​hole 11.

[0050] This structural design ensures that after the wire is inserted into the connector 3, the outer wall of the wire's rubber shell abuts against the inner wall of the snap-fit ​​hole 11, thus locking the wire in place and preventing it from shifting. This increases the stability of the wire connection and makes it highly practical.

[0051] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A wiring structure for a circuit breaker, comprising a housing (1) and a wiring assembly, characterized in that, The wiring assembly includes: A terminal block (2) is provided with an abutment portion, the abutment portion including an "L"-shaped crimping end face; Terminal block (3), which is movable in the Z direction and installed in the housing (1), is provided with an elastic pressure plate (4) that can swing in the Z direction. The elastic pressure plate (4) is also an "L" shaped structure and has a limit hole (5). Fastening screw (6), the fastening screw (6) is rotatably disposed in the housing (1) and threadedly connected to the terminal block (3); The wires of the external circuit are set through the limiting hole (5), and the elastic pressure plate (4) and the abutment part are used to clamp and fix the wires along the Z direction.

2. The wiring structure of a circuit breaker according to claim 1, characterized in that, The contact portion includes: A connecting piece (7) is provided with a connecting hole; The abutment piece (8) has an "L" shaped structure; The fastening screw (6) is threadedly connected to the connecting hole.

3. The wiring structure of a circuit breaker according to claim 2, characterized in that, The abutting piece (8) also includes a raised strip (9) arranged along the Y direction.

4. The wiring structure of a circuit breaker according to claim 3, characterized in that, The number of the protrusions (9) is several, and the several protrusions (9) are arranged at equal intervals along the X direction.

5. The wiring structure of a circuit breaker according to claim 1, characterized in that, The terminal block (3) is provided with a positioning block (10), and the positioning block (10) is provided with a snap-fit ​​hole (11).

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