A circuit breaker

Abstract

The application relates to a circuit breaker in the technical field of low-voltage electrical appliances, comprising a circuit breaker body and a plug-in part. The circuit breaker body is provided with a handle, an input terminal and an output terminal. The handle is located at a first end of the circuit breaker body, and the input terminal and the output terminal are arranged at a second end away from the handle. The plug-in part is electrically connected to the circuit breaker body in a detachable manner and is located between the input terminal and the output terminal. The plug-in part is electrically connected to a control circuit board. The structure uses the space region between the input terminal and the output terminal to install the plug-in part, realizes the electrical connection of the control circuit board while keeping the overall size of the circuit breaker body unchanged, is beneficial to reducing the volume of the shell, makes the circuit breaker structure more compact, is convenient for application in an installation environment with limited space, and improves the modular compatibility and assembly convenience.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more particularly to a circuit breaker. Background Technology

[0002] Currently, a circuit breaker is a switching device that can connect, carry, and break current under normal conditions, and protectively disconnect when abnormal current occurs. With the development of intelligent electrical systems, circuit breakers are gradually acquiring Internet of Things (IoT) capabilities, realizing energy harvesting, data processing, and communication control through built-in circuit boards. However, when the circuit boards of existing circuit breakers are detachably connected to the housing, the size of the housing increases significantly, making it difficult to install properly in certain situations. Utility Model Content

[0003] This application provides a circuit breaker to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this application provides a circuit breaker, including a circuit breaker body and a connector. The circuit breaker body is provided with a handle, an input terminal, and an output terminal. The handle is located at a first end of the circuit breaker body. The input terminal and the output terminal are spaced apart at a second end of the circuit breaker body away from the handle. The connector is detachably and electrically connected to the circuit breaker body and is located between the input terminal and the output terminal. The connector is configured to be electrically connected to a control circuit board.

[0005] Optionally, the circuit breaker further includes a first elastic conductive element, and two first elastic conductive elements are provided in the circuit breaker body, one of which is configured to be electrically connected to the L-phase line and the other of which is configured to be electrically connected to the N-phase line. When the connector is inserted into the circuit breaker body, the first elastic conductive element abuts against the connector to electrically connect the control circuit board to the L-phase line and the N-phase line.

[0006] Optionally, the connector includes a housing, and the circuit breaker body has a connector slot for inserting the housing; The connector also includes a power supply circuit board. An opening is provided on one side of the housing. The power supply circuit board is installed inside the housing and faces the opening of the housing. The first end of the power supply circuit board is configured to be electrically connected to the control circuit board. The first side plate of the power supply circuit board is used to abut against the first elastic conductive member.

[0007] Optionally, the connector includes a housing, and the circuit breaker body has a connector slot for inserting the housing; The connector also includes a power supply circuit board. An opening is provided on one side of the housing. The power supply circuit board is installed inside the housing and faces the opening of the housing. The first end of the power supply circuit board is configured to be electrically connected to the control circuit board. The first side plate of the power supply circuit board is used to abut against the first elastic conductive element and the second elastic conductive element.

[0008] Optionally, the connector further includes a connecting portion disposed within the housing and used to connect to the circuit breaker body.

[0009] Optionally, a first threaded hole is provided on the connecting part, and a second threaded hole is provided on the inner wall of the insertion groove, and a bolt is threaded through the first threaded hole and the second threaded hole.

[0010] Optionally, one end of the connecting part is attached to the second side panel of the power supply circuit board, and an opening is provided on the surface of the power supply circuit board, with the first threaded hole facing the opening.

[0011] Optionally, the circuit breaker further includes a second elastic conductive element disposed within the circuit breaker body and configured to be electrically connected to the N-phase line. When the connector is inserted into the circuit breaker body, the second elastic conductive element abuts against the connector, so that the control circuit board forms a signal acquisition path after being electrically connected to the N-phase line.

[0012] Optionally, the first elastic conductive element includes a first spring, the first ends of the two first springs are electrically connected to the L-phase line and the N-phase line respectively, and the second ends of the first springs abut against the first side plate surface of the power taking circuit board. And / or, the second elastic conductive element includes a second spring, the first end of the second spring being electrically connected to the N-phase line, and the second end of the second spring abutting against the first side surface of the power taking circuit board.

[0013] Optionally, the circuit breaker body is provided with a first power taking piece, the first end of the first power taking piece is connected to the first elastic conductive element, and the second end of the first power taking piece is electrically connected to the L-phase line and the N-phase line. And / or, the circuit breaker body is provided with a second power taking piece, the first end of the second power taking piece is connected to the second elastic conductive element, and the second end of the second power taking piece is electrically connected to the N-phase line.

[0014] Optionally, the first end of the power supply circuit board is provided with a male connector, and the control circuit board is provided with a female connector, and the male connector and the female connector are plugged into each other.

[0015] In the circuit breaker of this application embodiment, a detachable connector is provided on the circuit breaker body and arranged between the input and output terminals. This allows the connector to be securely installed using the gap between the two terminals, thereby achieving electrical connection with the control circuit board without increasing the external size of the circuit breaker. This structural arrangement helps maintain the original overall dimensions of the circuit breaker, ensuring its proper fit in distribution cabinets or equipment with limited installation space, and avoiding the impact on installation compatibility caused by increasing the housing size due to the circuit board access structure. Simultaneously, the detachable connector facilitates easy replacement of the circuit board during later maintenance or upgrades, improving the maintainability and modularity of the circuit breaker, reducing overall replacement costs, and enhancing the flexibility and economy of its use.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0018] Figure 1 This is a schematic diagram of the overall structure of the circuit breaker according to an embodiment of this application; Figure 2 This is a schematic diagram of the bottom structure of the circuit breaker after concealing the connector, which is used to show the connector slot in an embodiment of this application. Figure 3 This is a first partial internal sectional view of the circuit breaker in the embodiments of this application; Figure 4 This is a second partial internal sectional view of the circuit breaker in the embodiments of this application; Figure 5 This is a partial connection diagram of the power supply circuit board and the control circuit board according to an embodiment of this application; Figure 6 This is a partial exploded view of the connection between the power supply circuit board and the control circuit board in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Circuit breaker body; 11. Plug-in slot; 111. Second threaded hole; 12. First power take-up piece; 13. Second power take-up piece; 2. Connector; 21. Housing; 22. Power supply circuit board; 221. Opening; 222. Male connector; 23. Connecting part; 231. First threaded hole; 3. First elastic conductive element; 4. Second elastic conductive element; 5. Bolts; 6. Control circuit board; 61. Female connector; 7. Handle; 8. Input terminals; 9. Output terminals. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0021] This application provides a circuit breaker; please refer to [link / reference]. Figures 1 to 4 The circuit breaker includes a circuit breaker body 1 and a connector 2. The circuit breaker body 1 is provided with a handle 7, an input terminal 8 and an output terminal 9. The handle 7 is located at the first end of the circuit breaker body 1. The input terminal 8 and the output terminal 9 are spaced apart at the second end of the circuit breaker body 1 away from the handle 7. The connector 2 is detachably and electrically connected to the circuit breaker body 1 and is located between the input terminal 8 and the output terminal 9. The connector 2 is configured to be electrically connected to the control circuit board 6.

[0022] It is understandable that the shape of the connector 2 is adapted to the outer shell contour of the adjacent position of the circuit breaker body 1, so that after it is inserted, it forms an integrated appearance with the circuit breaker body 1, avoiding the problem of structural protrusion or increased shell size.

[0023] Meanwhile, the gap area between the input terminal 8 and the output terminal 9 is usually unusable space in conventional circuit breakers. By placing the plug-in 2 in this position, the space resources of the original structure can be fully utilized, so that the external dimensions of the circuit breaker remain consistent with conventional products. This is beneficial for universal installation on standard electrical cabinets or mounting rails, improving structural compactness and universal compatibility.

[0024] Furthermore, by placing the connector 2 on the side away from the handle 7, mechanical interference during operation can be reduced to some extent, avoiding spatial conflicts between the connector 2 and the handle 7 assembly. This layout is beneficial for the modular installation design of the circuit breaker, clearly separating the electrical control section from the mechanical operation section, which is conducive to heat dissipation of the internal structure and the safety of maintenance operations, while also improving the compactness of the overall assembly and the electrical insulation safety.

[0025] It is worth noting that the detachable connection of connector 2 can be achieved through elastic clips, screw locking, or slide rail mating, which can ensure the reliability of electrical connection and allow for independent disassembly and assembly when it is necessary to replace circuit boards or maintain communication modules, thereby reducing maintenance costs and improving the convenience of modularization to a certain extent.

[0026] In some implementations, combined Figure 2 , Figure 3 and Figure 4 The circuit breaker also includes a first elastic conductive element 3. Two first elastic conductive elements 3 are provided in the circuit breaker body 1. One first elastic conductive element 3 is configured to be electrically connected to the L-phase line, and the other first elastic conductive element 3 is configured to be electrically connected to the N-phase line. When the plug 2 is inserted into the circuit breaker body 1, the first elastic conductive element 3 abuts against the plug 2 so that the control circuit board 6 is electrically connected to the L-phase line and the N-phase line.

[0027] For example, the two first elastic conductive elements 3 are respectively an L-phase elastic conductive element and an N-phase elastic conductive element. The L-phase elastic conductive element is configured to be electrically connected to the L-phase line, and the N-phase elastic conductive element is configured to be electrically connected to the N-phase line.

[0028] Combination Figure 2 , Figure 3 and Figure 4 When the circuit breaker includes both L-phase and N-phase elastic conductive elements, the insertion of connector 2 establishes a circuit between the two sets of elastic conductive elements and the L-phase and N-phase lines respectively. When connector 2 is pulled out, both sets of elastic conductive elements disconnect under elastic recovery, thus achieving synchronous on / off control of the L-phase and N-phase lines. This structure achieves automatic matching of bipolar electrical connections through mechanical insertion and removal, enabling the circuit breaker to have both L-phase and N-phase functional configurations on the same structural platform, featuring high versatility and flexible assembly.

[0029] In some embodiments, the circuit breaker may also include an adjacent L-phase circuit breaker and an N-phase circuit breaker, so that when the connector 2 is inserted into the circuit breaker body 1, the on / off control of the L-phase circuit breaker and the N-phase circuit breaker can be realized simultaneously.

[0030] Based on this, the first elastic conductive element 3 realizes the switching of L-phase and N-phase lines through independent conductive elements, thereby improving the reliability of electrical connections and the convenience of maintenance.

[0031] In some embodiments, the circuit breaker body 1 serves as the supporting unit of the overall structure, and its interior has a slot structure that mates with the plug-in 2. The slot structure has a guide surface along the insertion direction to limit the insertion position and direction of the plug-in 2.

[0032] In some embodiments, the shape of the plug 2 matches the slot structure on the circuit breaker body 1. The plug 2 is provided with a terminal area that is electrically connected to the control circuit board 6. The terminal area includes conductive terminals, insulating support parts and connecting pins. The conductive terminals are used to abut against the first elastic conductive member 3, and the insulating support parts are used to maintain the spatial stability of the conductive terminals and the insulation distance between them and the circuit breaker body 1.

[0033] In some embodiments, the first elastic conductive element 3 is installed inside the circuit breaker body 1 and electrically connected to a single-phase line. It is worth noting that the single-phase line here refers to either an L-phase line or an N-phase line. The free end of the first elastic conductive element 3 can extend along the insertion direction of the connector 2 or perpendicular to the insertion direction of the connector 2, depending on the specific circuit breaker model. When the connector 2 is inserted into a predetermined position inside the circuit breaker body 1, the free end of the first elastic conductive element 3 forms surface contact or line contact with the terminal of the connector 2 under elastic action, thereby establishing a reliable electrical path.

[0034] It is understandable that when the connector 2 is fully inserted into the circuit breaker body 1, the first elastic conductive element 3 generates contact pressure through its own elastic deformation, creating a stable conductive state between the terminals of the connector 2 and the single-phase line. At this time, the control circuit board 6 is electrically connected to the internal circuit of the circuit breaker through the connector 2, enabling on / off control and information monitoring. When the connector 2 is pulled out from the circuit breaker body 1, the first elastic conductive element 3 returns to its original shape under the action of the reset force, the conductive path is automatically disconnected, and the control circuit board 6 is separated from the single-phase line, thus achieving electrical isolation without disassembling the entire circuit breaker structure.

[0035] This structure achieves electrical switching through mechanical plugging and unplugging, avoiding the drawback of traditional welded circuit board fixed structures that require the entire circuit breaker to be replaced during maintenance. This reduces maintenance costs to some extent and improves modular maintenance efficiency.

[0036] In some embodiments, a positioning protrusion and a limiting groove can be provided between the connector 2 and the circuit breaker body 1 to limit the insertion depth and direction, avoiding electrical instability caused by incomplete insertion or misaligned contact. The outer surface of the connector 2 can be provided with an insulating shell to prevent operators from touching conductive areas during insertion and removal, thus preventing safety risks. Inside the circuit breaker body 1, an insulating bracket can fix the position of the first elastic conductive element 3, ensuring stable guidance during elastic deformation and reducing contact misalignment caused by vibration or thermal expansion and contraction.

[0037] It is understandable that the circuit breaker, through the cooperation of the connector 2 and the first elastic conductive element 3, enables the connection between the control circuit board 6 and the main circuit of the circuit breaker to be replaceable. This facilitates independent replacement in case of control module failure, upgrade, or communication function adjustment, without replacing the entire circuit breaker assembly, reducing maintenance difficulty and improving product adaptability and modular expansion capabilities. Furthermore, this structure, while ensuring the basic electrical performance of the circuit breaker, makes the electrical connection process more controllable and maintainable, which is beneficial to the long-term stable operation of the intelligent circuit breaker system.

[0038] In some implementations, combined with Figure 1 , Figure 2 The connector 2 includes a housing 21, a power supply circuit board 22, and a connecting part 23. The circuit breaker body 1 is provided with a connector slot 11 for the connector 2 to be inserted and to cooperate with the internal conductive structure.

[0039] For example, the housing 21 is made entirely of insulating material and its shape matches the cross-sectional shape of the plug slot 11. Its outer surface is provided with guide edges and limiting structures to provide position guidance and limit the insertion depth during the insertion process, so that the plug 2 maintains accurate insertion direction and stable fixation when inserted into the circuit breaker body 1.

[0040] In some embodiments, an opening is provided on one side of the housing 21, facing the conductive area inside the circuit breaker body 1. A power-taking circuit board 22 is installed inside the housing 21, with its first side facing the opening of the housing 21, allowing it to contact the first elastic conductive element 3 inside the circuit breaker body 1 during insertion to form an electrical path. The first end of the power-taking circuit board 22 is electrically connected to the control circuit board 6 for transmitting signals and energy when the circuit is conducting.

[0041] It is understandable that through this plug-in structure design, the power supply circuit board 22 can automatically contact the first elastic conductive element 3 when the housing 21 is inserted into the plug slot 11, forming a closed circuit; when the housing 21 is pulled out, the two contacts separate, the circuit is broken, thus completing the on / off control of the electrical circuit through physical plugging and unplugging actions. This structure simplifies the internal wiring connection method of the circuit breaker to a certain extent, which is beneficial to improving the convenience of assembly and maintenance, while also having good replaceability.

[0042] In some implementations, reference is made to Figure 3 , Figure 4 The housing 21 has a connecting part 23 inside, which is used to fix the housing 21 to the circuit breaker body 1. The connecting part 23 is located in the area of ​​the housing 21 near the plug-in end, and has a structure that is integrally formed with the housing 21 or can be assembled.

[0043] For example, the connecting part 23 is connected to the wall of the housing 21 inside the housing 21 by a reinforcing rib or a limiting step, and its position is adjacent to the power supply circuit board 22 to ensure that the circuit board can be stably supported in the plugged-in state.

[0044] In some embodiments, the connecting part 23 is provided with a first threaded hole 231, and the inner wall of the plug groove 11 of the circuit breaker body 1 is provided with a second threaded hole 111. A bolt 5 is passed between the first threaded hole 231 and the second threaded hole 111 for axial locking of the housing 21. This structure enhances the installation stability of the plug 2 under vibration or thermal expansion and contraction conditions to a certain extent, making the connection between the plug 2 and the circuit breaker body 1 more secure and reliable, and preventing unstable electrical contact due to loosening of the plug 2.

[0045] In some embodiments, one end of the connecting part 23 is fitted to the second side panel of the power supply circuit board 22, thereby limiting the installation position of the power supply circuit board 22 in the housing 21, so that the circuit board remains flat and stable during insertion, removal and tightening of bolts 5, and avoids contact position errors caused by force displacement.

[0046] Furthermore, an opening 221 is provided on the surface of the power supply circuit board 22, which is directly opposite to the first threaded hole 231. The bolt 5 can pass through the opening 221 and enter the second threaded hole 111 for tightening, so that the bolt 5 can fix the housing 21 without interfering with the layout and electrical function distribution of the circuit board. With this structural layout, the spatial position of the power supply circuit board 22 is restricted by the connecting part 23, and its installation posture is more precise and the contact alignment is more stable.

[0047] Based on this, the structural design of the housing 21, power supply circuit board 22, connecting part 23, and its bolts 5 ensures that the plug-in component 2 achieves electrical functions while possessing high mechanical stability and maintainability. The insulation material design of the housing 21 enhances operational safety, and the mating structure between the plug slot 11 and the housing 21 improves protection performance to a certain extent. The automatic contact method between the power supply circuit board 22 and the elastic conductive element reduces internal welding structures, facilitates module replacement, and has good reassembly performance. Through the rigid fixation of the connecting part 23 and the precise positioning of the power supply circuit board 22, the entire plug-in assembly achieves coordinated operation in terms of electrical connection and mechanical fixation, thereby enabling the circuit breaker to have intelligent control and Internet of Things functions while being more compact, easier to maintain, and more reliable.

[0048] In some implementations, combined Figure 2 , Figure 4 The circuit breaker also includes a second elastic conductive element 4, which is disposed inside the circuit breaker body 1 and electrically connected to the N-phase line. When the plug 2 is inserted into the circuit breaker body 1, the second elastic conductive element 4 abuts against the plug 2, thereby electrically connecting the control circuit board 6 to the N-phase line, thus forming a signal acquisition path after the control circuit board 6 is electrically connected to the N-phase line.

[0049] For example, the second elastic conductive element 4 and the first elastic conductive element 3 are independently arranged and opposite to each other within the circuit breaker body 1, so that the plug 2 can simultaneously form electrical contact with both the first elastic conductive element 3 and the second elastic conductive element 4 during insertion into the circuit breaker body 1. The structure of the second elastic conductive element 4 can be similar to that of the first elastic conductive element 3. The fixed end of the second elastic conductive element 4 is connected to the N-phase line through a connecting terminal, and the free end extends along the insertion direction of the plug 2 or perpendicular to the insertion direction of the plug 2, and the elastic deformation range is kept stable by a guide groove or a limiting structure.

[0050] It is understood that when the plug 2 is inserted into the circuit breaker body 1 in a predetermined direction, the free end of the second elastic conductive element 4 abuts against the corresponding conductive terminal area on the plug 2 under the action of elastic deformation, forming a path for the N-phase line and simultaneously forming a signal acquisition path. Meanwhile, the first elastic conductive element 3 is simultaneously connected to the L-phase line and the N-phase line, thereby enabling the control circuit board 6 to be electrically connected to both the L-phase line and the N-phase line and to acquire signal acquisition data.

[0051] In some implementations, combined Figure 2 , Figure 3 and Figure 4The first elastic conductive element 3 includes a first spring. The first ends of the two first springs are respectively connected to the L-phase line and the N-phase line, and the second ends of the two first springs abut against the first side plate of the power-taking circuit board 22. Through this structure, the first springs form a compressible conductive path inside the circuit breaker. When the connector 2 is inserted into the circuit breaker body 1, the first springs, under elastic deformation, form a reliable contact connection with the power-taking circuit board 22, thereby establishing a conductive path in the L-phase and N-phase lines. When the connector 2 is pulled out, the first springs, under their own elastic restoring force, separate from the power-taking circuit board 22, and the L-phase and N-phase lines are disconnected, thus realizing the on / off control of the circuit. This structure utilizes the compressibility and conductivity of the first springs to enable rapid response and stable contact during the on / off process of the L-phase and N-phase lines without the need for additional complex mechanisms, and can reduce the problem of conductivity degradation caused by poor contact or mechanical wear to a certain extent.

[0052] In some implementations, combined Figure 2 and Figure 4 The second elastic conductive element 4 includes a second spring. The first end of the second spring is electrically connected to the N-phase line, and the second end of the second spring abuts against the first side surface of the power-taking circuit board 22. It can be understood that the second spring also undergoes elastic deformation when the connector 2 is inserted, forming electrical contact with the power-taking circuit board 22, thus keeping the N-phase line in a conductive state and enabling signal acquisition. When the connector 2 is pulled out, the second spring separates under elastic recovery, and the N-phase line is disconnected. This structure enables on / off control and signal acquisition in the N-phase line through an independent elastic element. Through the application of the spring structure, the conductive element has a certain buffering effect during both conduction and disconnection, which helps reduce the mechanical impact generated during insertion and removal, improves contact stability and service life, and helps maintain the modular design of the overall circuit breaker structure, facilitating matching and expansion with different circuit configurations.

[0053] In some implementations, combined with Figure 3 and Figure 4 The circuit breaker body 1 is equipped with a first power-taking piece 12. The first end of the first power-taking piece 12 is connected to the first elastic conductive member 3, and the second end is electrically connected to the L-phase line and the N-phase line. Specifically, there are two first power-taking pieces 12, one of which is connected to the L-phase elastic conductive member and electrically connected to the L-phase line, and the other is connected to the N-phase elastic conductive member and electrically connected to the N-phase line.

[0054] For example, the first power-taking piece 12 is preferably made of a metal material with good conductivity, and its shape can be designed to be planar or bent according to the internal space arrangement of the circuit breaker to adapt to the installation requirements of different structural sizes. With the setting of the first power-taking piece 12, the power transmission path between the first elastic conductive element 3 and the single-phase line is more stable, the number of conductive connection points is reduced, and the resistance loss during power transmission is effectively controlled.

[0055] In some embodiments, a second power-taking piece 13 may be provided inside the circuit breaker body 1. The first end of the second power-taking piece 13 is connected to the second elastic conductive member 4, and the second end is electrically connected to the N-phase line. The second power-taking piece 13 has a similar structure to the first power-taking piece 12. When the connector 2 is inserted into the circuit breaker body 1, the first power-taking piece 12 and the second power-taking piece 13 respectively undertake the functions of power conduction and signal acquisition. The direct connection of the metal conductive pieces reduces the bending of the conductive path, making the overall conductive path simpler. This structure is beneficial to improving the response efficiency and conduction reliability of the circuit breaker during insertion and removal, and makes the power transmission more uniform and controllable. In addition, the planar structure of the power-taking piece facilitates heat dissipation and assembly, and is beneficial to the compact and modular design of the internal layout of the circuit breaker, thereby improving the assembly stability and service life of the structure while maintaining conductivity.

[0056] In some implementations, combined with Figure 5 , Figure 6 The first end of the power supply circuit board 22 is provided with a male connector 222, and the control circuit board 6 is provided with a female connector 61. The male connector 222 and the female connector 61 are used in a plug-in manner. The male connector 222 and the female connector 61 can adopt a standardized electrical connection terminal structure, with a mating relationship between conductive pins and sockets, forming a reliable electrical connection when plugged in.

[0057] It is understandable that the plug-in structure between the male connector 222 and the female connector 61 facilitates the separation and replacement of the power supply circuit board 22 and the control circuit board 6 without damaging the wiring connections during maintenance or upgrades. This structure reduces the number of wire solder joints to some extent, lowering the risk of poor contact due to solder joint aging or incomplete soldering. Simultaneously, this plug-in method offers high mechanical positioning accuracy, with controllable insertion depth and contact pressure, which helps maintain the stability and vibration resistance of electrical contacts, thereby improving the reliable conduction characteristics and maintenance convenience of the circuit breaker under long-term operating conditions.

[0058] It is worth noting that the second elastic conductive element 4 is used to extract the signal voltage from the current path inside the circuit breaker and to detect and process the signal. By integrating signal acquisition on the power acquisition circuit board 22, the power acquisition circuit board 22 can simultaneously perform power acquisition and signal detection functions within a limited installation space, thereby completing the sensing of the current status without adding additional components. The second elastic conductive element 4 is connected to the current path through an elastic contact method, which can maintain stable contact under the mechanical assembly and vibration conditions of the circuit breaker, reducing detection errors caused by poor contact. This structural design helps to simplify the internal electrical connection relationship of the circuit breaker, reduce the layout of independent signal lines, make the electrical connection more compact, improve the reliability of signal acquisition and structural integration, and also facilitate later maintenance and modular replacement of the circuit board.

[0059] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0061] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0062] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A circuit breaker, characterized in that, The circuit breaker includes a circuit breaker body (1) and a connector (2). The circuit breaker body (1) is provided with a handle (7), an input terminal (8) and an output terminal (9). The handle (7) is located at the first end of the circuit breaker body (1). The input terminal (8) and the output terminal (9) are spaced apart at the second end of the circuit breaker body (1) away from the handle (7). The connector (2) is detachably and electrically connected to the circuit breaker body (1) and is located between the input terminal (8) and the output terminal (9). The connector (2) is configured to be electrically connected to a control circuit board (6).

2. The circuit breaker according to claim 1, characterized in that, The circuit breaker further includes a first elastic conductive element (3), and two first elastic conductive elements (3) are provided in the circuit breaker body (1). One of the first elastic conductive elements (3) is configured to be electrically connected to the L-phase line, and the other first elastic conductive element (3) is configured to be electrically connected to the N-phase line. When the connector (2) is inserted into the circuit breaker body (1), the first elastic conductive element (3) abuts against the connector (2) so that the control circuit board (6) is electrically connected to the L-phase line and the N-phase line.

3. The circuit breaker according to claim 2, characterized in that, The connector (2) includes a housing (21), and the circuit breaker body (1) has a connector slot (11) for the housing (21) to be inserted. The connector (2) further includes a power supply circuit board (22). The box (21) has an opening on one side. The power supply circuit board (22) is installed inside the box (21) and faces the opening of the box (21). The first end of the power supply circuit board (22) is configured to be electrically connected to the control circuit board (6). The first side plate of the power supply circuit board (22) is used to abut against the first elastic conductive member (3).

4. The circuit breaker according to claim 3, characterized in that, The connector (2) further includes a connecting part (23), which is located inside the housing (21) and is used to connect to the circuit breaker body (1).

5. The circuit breaker according to claim 4, characterized in that, The connecting part (23) is provided with a first threaded hole (231), and the inner wall of the insertion groove (11) is provided with a second threaded hole (111). A bolt (5) is threaded through the first threaded hole (231) and the second threaded hole (111).

6. The circuit breaker according to claim 5, characterized in that, One end of the connecting part (23) is in contact with the second side plate of the power supply circuit board (22). An opening (221) is provided on the plate surface of the power supply circuit board (22), and the first threaded hole (231) is directly opposite the opening (221).

7. The circuit breaker according to claim 3, characterized in that, The circuit breaker also includes a second elastic conductive element (4), which is disposed inside the circuit breaker body (1) and is configured to be electrically connected to the N-phase line. When the plug (2) is inserted into the circuit breaker body (1), the second elastic conductive element (4) abuts against the plug (2) so that the control circuit board (6) forms a signal acquisition path after being electrically connected to the N-phase line.

8. The circuit breaker according to claim 7, characterized in that, The first elastic conductive element (3) includes a first spring, the first ends of the two first springs are electrically connected to the L-phase line and the N-phase line respectively, and the second ends of the first springs abut against the first side plate surface of the power taking circuit board (22). And / or, the second elastic conductive element (4) includes a second spring, the first end of the second spring being electrically connected to the N-phase line, and the second end of the second spring abutting against the first side plate surface of the power taking circuit board (22).

9. The circuit breaker according to claim 7, characterized in that, The circuit breaker body (1) is provided with a first power taking piece (12), the first end of the first power taking piece (12) is connected to the first elastic conductive member (3), and the second end of the first power taking piece (12) is electrically connected to the L-phase line and the N-phase line. And / or, the circuit breaker body (1) is provided with a second power taking piece (13), the first end of the second power taking piece (13) is connected to the second elastic conductive member (4), and the second end of the second power taking piece (13) is electrically connected to the N-phase line.

10. The circuit breaker according to any one of claims 3 to 9, characterized in that, The first end of the power supply circuit board (22) is provided with a male connector (222), and the control circuit board (6) is provided with a female connector (61). The male connector (222) and the female connector (61) are plugged into each other.

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