A hybrid molded case circuit breaker based on arc voltage

Abstract

This utility model relates to the technical field of arc voltage hybrid circuit breakers, and more particularly to a hybrid molded case circuit breaker based on arc voltage. It includes a circuit breaker body, a front panel for wiring ports, wiring ports, and screw-type terminals. A connecting wire guide mechanism is provided on the front panel for the wiring ports, and the connecting wire guide mechanism includes a concave clamp plate. A locking screw is connected to the front of the concave clamp plate, and a limiting protrusion is connected to the center of the top of the concave clamp plate. In this utility model, after the circuit breaker connecting wire is fixed by the screw-type terminals, the front end of the connecting wire can be placed in an anti-bending tube. This not only ensures that the front end of the connecting wire will not be dented, but also protects the front end of the wire, preventing increased friction between the wire and the wall panel at the bend, which could lead to short circuits and increased electrical safety risks.

Description

Technical Field

[0001] This utility model relates to the technical field of arc voltage hybrid circuit breakers, specifically a hybrid molded case circuit breaker based on arc voltage. Background Technology

[0002] The arc voltage hybrid molded case circuit breaker is a type of circuit breaker that combines arc control and voltage detection functions. It is mainly used in low-voltage power distribution systems. When an overload or short circuit occurs in the circuit, the arc voltage hybrid molded case circuit breaker is triggered by a built-in thermal relay or magnetic actuator, causing the contacts to spring open and disconnect the circuit. The casing of the arc voltage hybrid molded case circuit breaker is usually made of highly flame-retardant plastic, with a compact structure. It is suitable for small and medium current power distribution systems and motor protection. This type of circuit breaker is widely used in various industrial scenarios, especially performing well in environments requiring waterproof, moisture-proof, and corrosion-resistant properties.

[0003] The screws used to tighten circuit breaker wiring are commonly known as screw-type terminal blocks. Screw-type terminal blocks are common connecting components in electrical equipment and circuits, primarily used to securely fix wires or conductors to equipment or distribution boards to ensure smooth current flow and prevent electrical accidents. However, after connecting wires via screw-type terminal blocks, the connection ends are prone to bending due to subsequent pulling or natural drooping. Bending increases friction between the wire and the wall panel, easily damaging the wire's insulation. Once the insulation is damaged, the wire is prone to short circuits, increasing the risk of electrical safety hazards.

[0004] Therefore, it is particularly important to design a hybrid molded case circuit breaker based on arc voltage to overcome the above-mentioned technical defects and improve its overall practicality. Utility Model Content

[0005] The purpose of this invention is to provide a hybrid molded case circuit breaker based on arc voltage to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hybrid molded case circuit breaker based on arc voltage includes a circuit breaker body, a front panel for wiring ports, wiring ports, and screw-type terminals. A connecting wire guide mechanism is provided on the front panel for wiring ports at the position corresponding to the wiring ports.

[0008] The connecting line guiding mechanism includes a concave clamp plate. A locking screw is connected to the front of the concave clamp plate. A limiting protrusion is connected to the center of the top of the concave clamp plate. A waist-shaped guide plate is provided on the top of the concave clamp plate and sleeved on the outside of the limiting protrusion. An adjusting bracket is connected to the rear side of the waist-shaped guide plate. A rectangular slot extending along the length direction is opened inside the adjusting bracket. A locking bolt is slidably connected inside the rectangular slot. A folding support plate is provided on the top of the adjusting bracket. A locking nut is provided on the top of the folding support plate. An anti-bending tube is fixed to the rear side of the folding support plate. An insertion opening is opened above the anti-bending tube along the length direction. Multiple sets of circumferentially distributed clamping bending plates are arranged at intervals inside the anti-bending tube. Each set of clamping bending plates is connected to the inner wall of the anti-bending tube by a spring assembly.

[0009] As a preferred embodiment of this utility model, the concave clamp is designed with a downward-opening concave structure, and an anti-slip rubber pad is attached to the inner side of the concave clamp. An internal thread seat that is threaded with the locking screw is connected to the front of the concave clamp at the position corresponding to the locking screw.

[0010] The above technical solution enables the concave clamp to be firmly fixed to the front plate of the wiring port.

[0011] As a preferred embodiment of this utility model, one end of the locking screw extending to the inner side of the concave clamp is connected to an abutment rubber pad, and the other end of the locking screw is connected to a rotating operating cap.

[0012] The above technical solution facilitates operation and ensures the stability of the blessing.

[0013] As a preferred embodiment of this utility model, the interior of the waist-shaped guide plate is provided with a waist-shaped groove for sliding engagement of the limiting protrusion, wherein the inner wall of the waist-shaped groove is fitted with a resistance rubber strip.

[0014] As a preferred embodiment of this utility model, the adjusting bracket is fixedly connected to the rear side of the waist-shaped guide plate by welding, and the connection between the adjusting bracket and the folding support plate is a sliding connection.

[0015] The above technical solution facilitates the adjustment of the position of the anti-bend pipe.

[0016] As a preferred embodiment of this utility model, the locking bolt extends out of the top of the rectangular slot and passes through one end of the folded support plate, and is threadedly connected to the locking nut. The folded support plate has a through-hole slot for the locking bolt to pass through.

[0017] The above technical solution achieves the goal of fixing the adjustable bracket and the folding support plate in place.

[0018] As a preferred embodiment of this utility model, the bottom end of the anti-bending tube is designed to correspond to the position of the wiring port, and a silicone sheet is attached to the inner side of the clamping bending plate.

[0019] The above technical solutions make the electrical connection wire clamping more stable.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. In this utility model, after the circuit breaker connecting wire is fixed by the screw terminal, the front end of the connecting wire can be placed in the anti-bending tube. This not only ensures that the front end of the connecting wire will not be dented, but also protects the front end of the wire connection, preventing the bending point from causing increased friction between the wire and the wall panel, which could lead to a short circuit and increase the risk of electrical safety.

[0022] 2. In this utility model, the number of connecting wire guide mechanisms can be freely increased or decreased according to the number of wiring ports, which facilitates installation and disassembly, has a simple structure, and improves the ease of use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a structural diagram of the connecting line guide mechanism of this utility model;

[0025] Figure 3 This is a structural diagram of the adjustable bracket and the folding support plate of this utility model in their separated state;

[0026] Figure 4 This is a structural diagram of the anti-bending pipe of this utility model;

[0027] Figure 5 This is an enlarged schematic diagram of structure A of this utility model.

[0028] In the diagram: 1. Circuit breaker body; 2. Front panel of wiring port; 3. Wiring port; 4. Screw-type terminal block; 5. Connecting wire guide mechanism; 501. Concave clamp; 502. Locking screw; 503. Limiting buckle; 504. Waist-shaped guide plate; 505. Adjusting bracket; 506. Rectangular slot; 507. Locking bolt; 508. Folding support plate; 509. Locking nut; 510. Anti-bending tube; 511. Insertion opening; 512. Clamping bending plate; 513. Spring assembly. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0031] For examples, please refer to Figure 1-5 This utility model provides a technical solution:

[0032] A hybrid molded case circuit breaker based on arc voltage includes a circuit breaker body 1, a front panel 2 for wiring ports, wiring ports 3, and screw-type terminals 4. The circuit breaker is characterized in that a connecting wire guide mechanism 5 is provided on the front panel 2 for wiring ports and at a position corresponding to the wiring ports 3.

[0033] In this embodiment, the connecting wire guide mechanism 5 includes a concave clamping plate 501. A locking screw 502 is connected to the front of the concave clamping plate 501. A limiting protrusion 503 is connected to the center of the top of the concave clamping plate 501. A waist-shaped guide plate 504 is provided on the top of the concave clamping plate 501 and sleeved on the outside of the limiting protrusion 503. An adjusting bracket 505 is connected to the rear side of the waist-shaped guide plate 504. A rectangular slot 506 extending along the length direction is opened inside the adjusting bracket 505. A locking bolt 507 is slidably connected inside the rectangular slot 506. A folding support plate 508 is provided on the top of the adjusting bracket 505. A locking nut 509 is provided on the top of the folding support plate 508. A bend-resistant tube 510 is fixed to the rear side of the folding support plate 508. An insertion opening 511 is provided above the bend-resistant tube 510 and along its length. Multiple sets of circumferentially distributed clamping plates 512 are arranged at intervals inside the bend-resistant tube 510. Each set of clamping plates 512 is connected to the inner wall of the bend-resistant tube 510 by a spring assembly 513, so that the clamping plates 512 clamp and fix the wire connection. This not only ensures that the front end of the connection wire will not be dented, but also protects the front end of the wire connection, avoiding the problem that the bending point will cause increased friction between the wire and the wall panel, which may cause the wire to short circuit and increase the risk of electrical safety.

[0034] The concave clamp 501 features a downward-facing concave structure design, allowing for the flexible addition or reduction of the number of connecting wire guide mechanisms based on the number of wiring ports. This facilitates installation and disassembly, simplifies the structure, and enhances ease of use. An anti-slip pad is fitted to the inner side of the concave clamp 501 for a more secure clamping. An internal threaded seat, threaded with the locking screw 502, is connected to the front of the concave clamp 501 at the corresponding position to secure the locking screw 502. One end of the locking screw 502 extending into the inner side of the concave clamp 501 is connected to an abutment pad, while the other end is connected to a rotating operating cap for easy operation. The waist-shaped guide plate 504 has an internal opening for limiting movement. The convex buckle 503 has a sliding waist-shaped groove, the inner wall of which is fitted with a resistance rubber strip to prevent the waist-shaped guide plate 504 from moving freely. The adjusting bracket 505 is fixedly connected to the rear side of the waist-shaped guide plate 504 by welding. The connection between the adjusting bracket 505 and the folding support plate 508 is a sliding connection. The locking bolt 507 extends out of the top of the rectangular slot 506 and passes through one end of the folding support plate 508 and is threadedly connected to the locking nut 509. The folding support plate 508 has a through hole groove for the locking bolt 507 to pass through. The bottom end of the anti-bending tube 510 is designed to correspond to the position of the wiring port 3. The inner side of the clamping bending plate 512 is fitted with a silicone sheet to make the clamping more stable.

[0035] The working process of this utility model is as follows: When the hybrid molded case circuit breaker device and structure based on arc voltage designed in this scheme are in operation, the corresponding connecting wire guide mechanism 5 is taken out according to the number of wiring ports 3. Then, the connecting wire is fixed inside the wiring port 3 by screw-type terminal blocks 5. The concave clamp 501 in the connecting wire guide mechanism 5 is clamped at the corresponding position of the front plate 2 of the wiring port and fixed by tightening the locking screw 502 in the internal thread seat. Then, the position of the folding support plate 508 is adjusted according to the position of the connecting wire. The folding support plate 508 is moved to the appropriate position by adjusting the bracket 505. Then, use locking bolts 507 and locking nuts 509 to lock and fix the wire. After fixing, insert the front end of the connecting wire into the anti-bending tube 510 through the opening 511. Inside the anti-bending tube 510, multiple sets of clamping plates 512 are set at intervals. Under the elastic action of the spring assembly 513, the clamping plates 512 clamp and fix the connecting wire. This not only ensures that the front end of the connecting wire will not be bent, but also protects the front end of the wire connection. This prevents the bending point from causing increased friction between the wire and the wall panel, which could lead to short circuits and increase electrical safety risks.

[0036] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0037] 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. A hybrid molded case circuit breaker based on arc voltage, comprising a circuit breaker body (1), a front panel for wiring ports (2), wiring ports (3), and screw-type terminals (4), characterized in that: A connecting wire guide mechanism (5) is provided on the front plate (2) of the wiring port and at the position corresponding to the wiring port (3); The connecting wire guide mechanism (5) includes a concave clamp plate (501), a locking screw (502) connected to the front of the concave clamp plate (501), a limiting buckle (503) connected to the center of the top of the concave clamp plate (501), a waist-shaped guide plate (504) provided on the top of the concave clamp plate (501) and sleeved on the outside of the limiting buckle (503), an adjusting bracket (505) connected to the rear side of the waist-shaped guide plate (504), and a rectangular slot (506) extending along the length direction opened inside the adjusting bracket (505), and a sliding connection inside the rectangular slot (506) A locking bolt (507) is attached. A folding support plate (508) is provided on the top of the adjusting bracket (505). A locking nut (509) is provided on the top of the folding support plate (508). An anti-bending tube (510) is fixed on the rear side of the folding support plate (508). An insertion opening (511) is provided above the anti-bending tube (510) and along its length. Multiple sets of circumferentially distributed clamping bending plates (512) are provided at intervals inside the anti-bending tube (510). Each set of clamping bending plates (512) is connected to the inner wall of the anti-bending tube (510) by a spring assembly (513).

2. The hybrid molded case circuit breaker based on arc voltage according to claim 1, characterized in that: The concave clamp (501) has a concave structure with the opening facing downwards. The inner side of the concave clamp (501) is fitted with an anti-slip pad. The front of the concave clamp (501) and the position corresponding to the locking screw (502) are connected to an internal thread seat that is threadedly engaged with the locking screw (502).

3. The hybrid molded case circuit breaker based on arc voltage according to claim 1, characterized in that: The locking screw (502) extends to one end of the concave clamp (501) and is connected to an abutment pad. The other end of the locking screw (502) is connected to a rotating operating cap.

4. A hybrid molded case circuit breaker based on arc voltage according to claim 1, characterized in that: The waist-shaped guide plate (504) has a waist-shaped groove inside for sliding engagement with the limiting protrusion (503), and the inner wall of the waist-shaped groove is fitted with a resistance rubber strip.

5. The hybrid molded case circuit breaker based on arc voltage according to claim 1, wherein: The adjusting bracket (505) is fixedly connected to the rear side of the waist-shaped guide plate (504) by welding, and the connection between the adjusting bracket (505) and the folding support plate (508) is a sliding connection.

6. The hybrid molded case circuit breaker based on arc voltage according to claim 1, wherein: The locking bolt (507) extends out of the top of the rectangular slot (506) and passes through one end of the folded support plate (508) and is threaded to the locking nut (509). The folded support plate (508) has a through hole slot for the locking bolt (507) to pass through.

7. A hybrid molded case circuit breaker based on arc voltage according to claim 1, characterized in that: The bottom end of the anti-bending tube (510) is designed to correspond to the position of the wiring port (3), and a silicone sheet is attached to the inner side of the clamping bending plate (512).

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