A plug-in connection structure for measuring circuit breaker

Abstract

The present invention discloses a plug-in connection structure for a measuring circuit breaker, comprising a control mainboard disposed inside the circuit breaker housing, and a guide socket disposed at the top of the circuit breaker housing. A neutral line plug-in module connected to the control mainboard is installed and inserted into the guide socket. The neutral line plug-in module has a wiring port disposed at the end of the guide socket, so that the neutral line is connected to the wiring port. The neutral line plug-in module forms a plug-in fit with the control mainboard through a plug-in structure. The neutral line plug-in module using this technical solution and the control mainboard adopts a connector method to achieve a quick plug-in connection, has excellent electrical and mechanical properties, simplifies installation and wiring structure, and realizes independent plug-in installation on the circuit breaker, achieving modular and convenient installation effects. The installation and use are more flexible, and subsequent maintenance is also convenient, thereby improving installation efficiency and reducing production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a plug-in connection structure of a measuring circuit breaker. Background Art

[0002] In power supply and distribution systems, it is often necessary to perform real-time detection of many power parameters, such as voltage, current, power factor, and harmonics. To this end, measuring circuit breakers with energy metering have appeared on the market. These add intelligent control and energy metering functions to three-phase three-wire electronic circuit breakers. The core of these measuring circuit breakers is the installation of other electronic modules such as intelligent controllers and communication modules within the measuring circuit breakers, which can collect multiple parameters such as current, voltage, and temperature to implement the circuit breaker's protection and metering functions.

[0003] According to the measurement, the three-phase main circuit in the circuit breaker is a three-phase voltage, which cannot directly power the secondary circuit control unit and the controller. For this reason, an external neutral wire is required to cooperate with one of the phases to form a 220V power supply circuit. The common practice is to open a wiring port on the side of the circuit breaker, then pass the neutral wire through the wiring port into the circuit breaker, and then extend it to weld it on the control main board of the controller. However, this neutral wire installation method still has the following problems: the installation process of welding the wire to the control circuit board is complicated, the wiring is cumbersome, and the installation and maintenance are relatively inconvenient, especially in the application scenario where multiple circuit breakers are installed in a close parallel row with small gaps between adjacent ones. This makes it inconvenient to install and wire on the side of the circuit breaker. The entire installation process is relatively cumbersome and the installation efficiency is low. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the neutral wire is inserted into the circuit breaker from the wiring port on the side of the circuit breaker and then extended and welded to the control main board. The entire installation and wiring process is cumbersome, and it is not convenient for multiple circuit breakers to be used and maintained in a close and parallel manner in the application scenario, resulting in low installation efficiency.

[0005] To solve the above technical problems, the present invention provides a plug-in connection structure for a measuring circuit breaker, comprising a circuit breaker housing and a control mainboard arranged inside the circuit breaker housing. The top of the circuit breaker housing is provided with a guide socket connected to its inner cavity, and further comprises a neutral wire plug-in module vertically inserted into the guide socket and connected to the control mainboard. The top of the neutral wire plug-in module is provided with a wiring port at the port of the guide socket, so that the neutral wire is connected to the wiring port. The neutral wire plug-in module forms a plug-in connection with the control mainboard through a plug-in structure.

[0006] As a preferred solution, the neutral line plug-in module includes a connecting plate inserted into the guide socket, a wiring terminal arranged on the upper part of the connecting plate, and a connecting structure arranged on the lower part of the connecting plate, and the wiring terminal has the wiring port.

[0007] As a preferred solution, the plug-in structure includes a plug connector arranged at the lower part of the connecting plate, and a corresponding plug socket arranged on the control main board.

[0008] As a preferred solution, the socket is provided with a socket, the plug connector has a pin that matches and is inserted into the socket, and the end of the pin is fixedly connected to the connecting plate.

[0009] As a preferred solution, the connecting board is a PCB board with a rectangular structure.

[0010] As a preferred solution, the circuit breaker housing includes a base and a middle cover, the guide hole is vertically penetrated through the middle cover, and two limiting sliding grooves are relatively provided on the side walls of the guide hole, so that the two side edges of the connecting plate are matched and inserted into the two limiting sliding grooves.

[0011] As a preferred solution, the wiring terminal is connected to the connecting plate in an L-shaped structure, and a connecting port connected to the guide jack is provided on the front side wall of the middle cover. The wiring terminal is arranged at the connecting port so that its wiring port is consistent with the opening direction of the connecting port.

[0012] As a preferred solution, a cover plate covering the guide socket is also installed on the top of the middle cover.

[0013] As a preferred solution, a protective cover covering the control main board is provided in the base, a positioning boss is provided on the protective cover, a positioning through-hole is passed through the positioning boss, the socket is accommodated in the positioning through-hole, and the connecting plate drives the plug connector to pass through the positioning through-hole and connect with the socket.

[0014] As a preferred solution, the positioning through hole includes a first hole portion that is matched and connected to the connecting plate, and a second hole portion that is connected to the first hole portion and is suitable for the plug connector to pass through. The first hole portion and the second hole portion are connected to form a T-shaped structure.

[0015] The technical solution of the present invention has the following advantages over the prior art:

[0016] 1. In the plug-in connection structure of the measuring circuit breaker provided by the present invention, when installing, the neutral line plug-in module is vertically inserted into the guide socket from the top of the circuit breaker housing, and the plug-in structure forms an electrical connection with the control main board. After the neutral line plug-in module is installed in place, its wiring port is installed at the port of the guide socket. As long as the external neutral line is connected to the wiring port, the connection with the control main board can be achieved through the neutral line plug-in module. The zero line plug-in module of this structural design and the control main board adopt a connector method to achieve quick plug-in connection, which is not only convenient for installation and Maintenance, it also plays a dust-proof and sealing role, has excellent electrical and mechanical properties, and plays a circuit connection role between the neutral line and the control motherboard, avoiding the use of traditional soft connection methods, simplifying the installation and wiring structure, and is not limited by the gap influence of multiple circuit breakers installed side by side, which is convenient for multiple circuit breakers to be used and maintained close to each other in application scenarios. This neutral line plug-in module realizes independent plug-in installation on the circuit breaker, achieves modular and convenient installation effect, is more flexible in installation and use, and is also convenient for subsequent maintenance, improves installation efficiency, and reduces production costs.

[0017] 2. In the plug-in connection structure of the measuring circuit breaker provided by the present invention, the connecting plate is preferably a rectangular PCB board. Since the connecting plate is connected to the control main board through the guide socket, two limiting grooves are provided on the side walls of the guide socket, so that the side edges of the connecting plate are matched and plugged into the two limiting grooves. The limiting grooves guide the installation of the connecting plate and prevent the connecting plate from shifting and shaking in the guide socket, thereby ensuring the accuracy and stability of the plug-in connection between the connecting plate and the control main board, and convenient and quick installation.

[0018] 3. In the plug-in connection structure of the measuring circuit breaker provided by the present invention, the neutral wire plug-in module is composed of a connecting plate, a terminal block and a plug-in structure. The plug-in structure includes a plug connector provided at the lower part of the connecting plate, and a corresponding socket for cooperating with the plug connector is provided on the control main board. With this structural arrangement, a hard connection between the connecting plate and the control main board can be achieved by vertically inserting the connecting plate into the guide hole and plugging the plug connector and the socket connector into each other. This plug connector and the socket connector are designed based on the connector principle to achieve quick plug-in connection. This neutral wire plug-in module has a simple structure and is easy to install and use, achieving a modular connection effect and improving installation efficiency.

[0019] 4. In the plug-in connection structure of the measuring circuit breaker provided by the present invention, the upper and lower ends of the connecting plate are respectively positioned and connected in the guide hole and the positioning through hole, thereby playing a positioning and connecting role at both ends of the connecting plate. It can avoid the bending deformation of the connecting plate caused by uneven stress caused by the long connection length. The structure is stable, thereby ensuring the stability and reliability of the entire neutral wire plug-in module during installation and insertion on the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 is a schematic structural diagram of a measuring circuit breaker of the present invention;

[0022] Figure 2 is a schematic cross-sectional view of the plug-in connection structure of the measuring circuit breaker of the present invention;

[0023] Figure 3 This is a schematic diagram of the installation structure of the zero line plug-in module of the present invention;

[0024] Figure 4 for Figure 3 The schematic diagram of the installation structure of the neutral line plug-in module after the middle cover is hidden;

[0025] Explanation of the accompanying reference numerals: a, neutral line plug-in module; 1, connecting plate; 2, wiring terminal; 21, wiring port; 3, plug connector; 4, socket; 5, circuit breaker housing; 51, base; 52, middle cover; 53, cover plate; 54, protective cover; 6, guide jack; 7, control main board; 8, positioning boss; 9, positioning through hole. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0029] Example 1

[0030] This embodiment provides Figure 1-4 The plug-in connection structure of a measuring circuit breaker shown in the figure includes a circuit breaker housing 5 and a control mainboard 7 arranged inside the circuit breaker housing 5. The top of the circuit breaker housing 5 is provided with a guide hole 6 connected to its inner cavity, and also includes a neutral wire plug-in module a vertically inserted into the guide hole 6 and connected to the control mainboard 7. The top of the neutral wire plug-in module a is provided with a wiring port 21 at the end of the guide hole 6, so that the neutral wire is connected to the wiring port 21. The neutral wire plug-in module a forms a plug-in connection with the control mainboard 7 through a plug-in structure.

[0031] The above implementation method is the core technical solution of this embodiment. During installation, the neutral wire plug-in module a is vertically inserted into the guide socket 6 from the top of the circuit breaker housing 5, and an electrical connection is formed with the control main board 7 through the plug-in structure. After the neutral wire plug-in module a is installed in place, its wiring port 21 is installed at the port of the guide socket 6. As long as the external neutral wire is connected to the wiring port 21, the connection with the control main board 7 can be achieved through the neutral wire plug-in module a, thereby forming a 220V power supply circuit with one of the phase lines of the circuit breaker. The neutral wire plug-in module of this structural design adopts a hard connection method of the connector to achieve quick plug-in connection with the control main board, which has excellent electrical and mechanical properties, and plays a circuit connection role between the neutral wire and the control main board 7, avoiding the use of traditional soft connection methods, simplifying the installation and wiring structure, and is not limited by the gap between adjacent circuit breakers. This neutral wire plug-in module realizes independent plug-in installation on the circuit breaker, achieving modular and convenient installation effects, making installation and use more flexible, and facilitating subsequent maintenance, improving installation efficiency, and reducing production costs.

[0032] The following combination Figure 2-4 The specific setting method of the neutral line plug-in module is described in detail:

[0033] The neutral wire plug-in module a includes a connecting plate 1 inserted into the guide jack 6, a wiring terminal 2 arranged at the upper part of the connecting plate, and a plug-in structure arranged at the lower part of the connecting plate 1. The wiring terminal 2 has the wiring port 21. This connecting plate 1 is a rectangular PCB board with good structural strength. By arranging the wiring terminal 2 on the connecting plate 1, the wiring operation of the neutral wire is facilitated. It is only necessary to insert the external neutral wire into the wiring port 21 and lock it, so that the neutral wire is connected to the control main board 7 through the wiring terminal 2, the connecting plate 1, and the installation and wiring are convenient and quick.

[0034] As a specific structural setting, the plug-in structure includes a plug connector 3 provided at the lower part of the connecting plate 1, and a socket 4 correspondingly provided on the control main board 7, wherein the socket 4 is provided with a socket, and the plug connector 3 has a pin that matches and is inserted into the socket, and the end of the pin is fixedly connected to the connecting plate 1. From the above structure, it can be seen that according to the neutral line plug-in module a, it is composed of a connecting plate 1, a terminal 2 and a plug-in structure, and the plug-in structure includes a plug connector 3 provided at the lower part of the connecting plate 1, and a socket 4 corresponding to the control main board 7 that matches the plug connector. The advantage of this design is that as long as the connecting plate 1 is vertically inserted into the guide socket 6, the hard connection between the connecting plate and the control main board can be achieved by plugging and installing the plug connector and the socket 4. This plug connector and socket are designed based on the principle of connectors to achieve quick plug-in connection. This neutral line plug-in module has a simple structure and is easy to install and use, achieving the effect of modular connection and improving installation efficiency.

[0035] In this embodiment, combined with Figure 1-2 As shown, the circuit breaker housing 5 includes a base 51 and a middle cover 52, and the guide socket 6 is vertically arranged on the middle cover 52. Two limiting grooves are relatively provided on the side walls of the guide socket 6, so that the two side edges of the connecting plate 1 are matched and inserted into the two limiting grooves. Therefore, the limiting grooves guide the installation of the connecting plate 1 and prevent the connecting plate 1 from deflecting and shaking in the guide socket 6, thereby ensuring the accuracy and stability of the plug-in connection between the connecting plate 1 and the control main board 7, and the installation is convenient and quick.

[0036] As a preferred embodiment, a cover plate 53 covering the guide jack 6 is also installed on the top of the middle cover 52. The cover plate 53 provides a protective cover for the zero line plug-in module a inserted in the guide jack 6 to prevent the zero line plug-in module from being plugged in or out by mistake. At the same time, in order to facilitate the wiring, the direction of the wiring port 21 can be adjusted accordingly. Figure 2As shown, the wiring terminal 2 is connected to the connecting plate 1 in an L-shaped structure. A connection port connected to the guide jack 6 is provided on the front side wall of the middle cover 52. The wiring terminal 2 is arranged at the connection port so that its wiring port 21 is consistent with the opening direction of the connection port. This design prevents the wiring port 21 on the wiring terminal 2 from being blocked by the cover 53. The neutral wire can be directly connected to the wiring port 21 from the front end of the middle cover 52, thereby avoiding the use of wiring from the side of the circuit breaker. The operating space is large and the wiring operation is convenient.

[0037] Combine Figure 2 and Figure 4 As shown, a protective cover 54 covering the control main board 7 is provided in the base 51, and the control main board 7 installed in the base 51 is protected by the protective cover 54, and a positioning boss 8 is provided on the protective cover 54, and a positioning through-hole 9 is provided on the positioning boss 8, which is opposite to the guide socket 6 up and down. The socket 4 is accommodated in the positioning through-hole 9. During installation, the connecting plate 1 drives the plug connector 3 to penetrate into the positioning through-hole 9 and connect with the plug connector 4 by plugging. The positioning through-hole 9 includes a first hole portion that matches and connects to the connecting plate 1, and a second hole portion that is connected to the first hole portion and is suitable for the plug connector 3 to penetrate. The first hole portion and the second hole portion are connected to form a T-shaped structure, so that the lower end portion of the connecting plate 1 is positioned and plugged. In the first hole portion of the positioning through hole, the positioning through hole 9 of this T-shaped structural design is just adapted to the connecting plate and its connector, so that the connecting plate 1 drives the plug connector 3 to penetrate into the positioning through hole 9 and be connected to the socket 4, thereby positioning and connecting the connecting plate through the positioning through hole 9 and increasing the strength of the installation structure. In summary, the upper and lower ends of the connecting plate 1 are respectively positioned and connected in the guide socket and the positioning through hole, thereby positioning and connecting the two ends of the connecting plate 1, which can avoid the bending deformation of the connecting plate caused by the uneven stress caused by the excessive connection length, greatly improve the load-bearing capacity of the entire connecting plate 1, and have good structural stability, thereby ensuring the stability and reliability of the installation and plugging of the entire neutral line plug-in module on the circuit breaker housing.

[0038] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A plug-in connection structure for a measuring circuit breaker, comprising a circuit breaker housing (5) and a control mainboard (7) disposed inside the circuit breaker housing (5), characterized in that: The top of the circuit breaker housing (5) is provided with a guide socket (6) communicating with its inner cavity, and further comprises a neutral line plug-in module (a) inserted into the guide socket (6) and connected to the control main board (7); the top of the neutral line plug-in module (a) is provided with a wiring port (21) at the end of the guide socket (6), so that the neutral line is connected to the wiring port (21); the neutral line plug-in module (a) forms a plug-in connection with the control main board (7) through a plug-in structure.

2. The plug-in connection structure of the measuring circuit breaker according to claim 1, characterized in that: The zero line plug-in module (a) comprises a connecting plate (1) inserted into the guide jack (6), a connecting terminal (2) arranged on the upper part of the connecting plate, and a plug-in structure arranged on the lower part of the connecting plate (1), wherein the connecting terminal (2) has the connecting port (21).

3. The plug-in connection structure of the measuring circuit breaker according to claim 2, characterized in that: The plug-in structure comprises a plug connector (3) arranged at the lower part of the connecting plate (1), and a plug socket (4) correspondingly arranged on the control main board (7).

4. The plug-in connection structure of the measuring circuit breaker according to claim 3, characterized in that: The socket (4) is provided with a socket, and the plug connector (3) has a pin that matches and is inserted into the socket, and the end of the pin is fixedly connected to the connecting plate (1).

5. The plug-in connection structure of the measuring circuit breaker according to claim 4, characterized in that: The connecting plate (1) is a PCB board with a rectangular structure.

6. The plug-in connection structure of the measuring circuit breaker according to any one of claims 3 to 5, characterized in that: The circuit breaker housing (5) comprises a base (51) and a middle cover (52), the guide socket (6) is vertically penetrated through the middle cover (52), and two limiting sliding grooves are relatively provided on the side walls of the guide socket (6), so that the side edges of the connecting plate (1) are matched and inserted into the two limiting sliding grooves.

7. The plug-in connection structure of the measuring circuit breaker according to claim 6, characterized in that: The wiring terminal (2) is connected to the connecting plate (1) in an L-shaped structure. A connection port connected to the guide socket (6) is provided on the front side wall of the middle cover (52). The wiring terminal (2) is arranged at the connection port so that its wiring port (21) is aligned with the opening direction of the connection port.

8. The plug-in connection structure of the measuring circuit breaker according to claim 7, characterized in that: A cover plate (53) covering the guide socket (6) is also installed on the top of the middle cover (52).

9. The plug-in connection structure of the measuring circuit breaker according to claim 7 or 8, characterized in that: A protective cover (54) covering the control main board (7) is provided in the base (51), a positioning boss (8) is provided on the protective cover (54), and a positioning through hole (9) is provided through the positioning boss (8) and is opposite to the guide socket (6) in the upper and lower directions. The socket (4) extends through the positioning through hole (9), and the connecting plate (1) drives the plug connector (3) to penetrate into the positioning through hole (9) and connect with the socket (4).

10. The plug-in connection structure of the measuring circuit breaker according to claim 9, characterized in that: The positioning through hole (9) comprises a first hole portion matched with the connecting plate, and a second hole portion connected to the first hole portion and suitable for the insertion of the plug connector, wherein the first hole portion and the second hole portion are connected to form a T-shaped structure.

Images