A switch hardware board mechanism and micro break switch

Abstract

The application discloses a switch hardware board mechanism and a micro-break switch thereof, and belongs to the technical field of switch hardware board mechanisms. The switch hardware board mechanism comprises a core circuit board and a plurality of magnetic latching relays which are installed side by side on one side of the core circuit board. The other side of the core circuit board is provided with a plurality of current transformer assemblies which are in one-to-one correspondence with the magnetic latching relays. The current transformer assemblies are respectively provided with a wiring terminal and a wiring part at two ends in the axial direction of a measuring hole of the current transformer assemblies. The wiring part comprises a zero line conductive sheet and a live line conductive sheet which are arranged at intervals. The live line conductive sheet is connected with a pin of each magnetic latching relay. Each magnetic latching relay is further connected with a live line which is conducted through the live line conductive sheet. The zero line conductive sheet is connected with a plurality of zero lines in the extension direction of the zero line conductive sheet. The zero lines or the live lines pass through the measuring holes of the corresponding current transformer assemblies and are connected with zero line plug-in holes or live line plug-in holes corresponding to the wiring terminal. The whole micro-break is composed of multiple paths and is integrated. Only one zero line and one live line need to be connected for incoming lines, and the connection is simple and fast.

Description

Technical Field

[0001] This invention relates to the field of micro-break switch technology, and in particular to a switch hardware board mechanism and its micro-break switch. Background Technology

[0002] Household distribution boxes consist of multiple single-circuit air circuit breakers, resulting in cumbersome wiring, with live wires needing to be paralleled between each circuit. Patent document CN103107485B discloses a modular micro-circuit switch feeder measurement and control device, including a data acquisition and measurement module connected to the micro-circuit switch for acquiring the control signals to be measured from the micro-circuit switch, and a control module for analyzing the control signals acquired by the data acquisition and measurement module to obtain energy consumption analysis of the load connected to the micro-circuit switch, energy distribution of each phase, and fault causes. The control module and the data acquisition and measurement module are connected via a plug-in connection. The data acquisition and measurement module includes a main body with acquisition units and feeder copper busbars for acquiring the control signals to be measured, an intermediate unit for isolating the acquisition units inside the main body from the outside, and a micro-circuit switch cover for sealing the main body. However, it still requires parallel wiring when connecting each branch, inevitably causing cumbersome wiring. Summary of the Invention

[0003] The purpose of this invention is to provide a switch hardware board mechanism and its micro circuit breaker to solve the problems existing in the prior art. The entire micro circuit breaker is composed of multiple circuits integrated into one unit. Only one neutral wire and one live wire need to be connected to the incoming line, making the wiring simple and quick.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides a switch hardware board mechanism, including a core circuit board and a plurality of magnetic latching relays mounted side by side on one side of the core circuit board. A plurality of current transformer assemblies corresponding one-to-one with the magnetic latching relays are mounted on the other side of the core circuit board. Each current transformer assembly has a terminal block and a wiring portion at both ends along the axial direction of its measuring hole. The wiring portion includes a neutral wire conductive piece and a live wire conductive piece spaced apart. The live wire conductive piece is connected to the pin of each magnetic latching relay, and each magnetic latching relay is also connected to a live wire that conducts through it to the live wire conductive piece. The neutral wire conductive piece is connected to a plurality of neutral wires along its extension direction. The neutral wire or the live wire passes through the measuring hole corresponding to the current transformer assembly and is connected to the neutral wire insertion hole or live wire insertion hole corresponding to the terminal block. The ends of both the neutral wire conductive piece and the live wire conductive piece are provided with crimp terminals for conducting power.

[0005] Preferably, the current transformer assembly is equipped with a CT circuit board electrically connected to it. The CT circuit board is located between the current transformer assembly and the terminal block, extends along the direction of the arrangement of each current transformer assembly, and is vertically inserted into the core circuit board.

[0006] Preferably, the current transformer assembly is fixed on the CT circuit board, and the CT circuit board has a plurality of pairs of openings for the live wire and the neutral wire to pass through.

[0007] Preferably, the current transformer assembly includes a live wire current transformer and a neutral wire current transformer mounted on one side thereof, wherein the live wire and the neutral wire pass through the measuring holes on the live wire current transformer and the neutral wire current transformer, respectively.

[0008] Preferably, the crimp terminal includes a retaining ring sleeved on the neutral wire conductive sheet or the live wire conductive sheet, and the retaining ring is threaded with a conductive bolt for crimping the wire.

[0009] Preferably, both ends of the neutral wire conductive sheet or the live wire conductive sheet are provided with the crimp terminals.

[0010] A micro circuit breaker is also provided, characterized in that it includes several sets of detachably connected upper and lower housings, the switch hardware board mechanism is installed between the same set of upper and lower housings, the upper housing is provided with wiring ports connected to the crimp terminals at both ends along the extension direction of the neutral wire conductive sheet or the live wire conductive sheet, and the lower housing is provided with a wiring interface for exposing the neutral wire insertion hole and the live wire insertion hole of each of the wiring terminals.

[0011] Preferably, a pair of conductive connecting pieces are provided between two adjacent upper housings, and each pair of conductive connecting pieces passes through the corresponding wiring port and is connected between the crimp terminals of the two neutral wire conductive pieces or the two live wire conductive pieces.

[0012] Preferably, each of the conductive connecting pieces has a connecting hole at both ends, and each connecting hole extends into the fixing ring and is threadedly connected to the conductive bolt.

[0013] Preferably, the core circuit board has connection sockets at both ends along the extension direction of the neutral wire conductive sheet or the live wire conductive sheet, and the upper housing has an exposed plug interface at the position corresponding to each connection socket. A connection cable is provided between two adjacent upper housings, and the plugs at both ends of the connection cable pass through the plug interfaces of the two upper housings and are plugged into the corresponding connection sockets.

[0014] The present invention achieves the following technical effects compared to the prior art:

[0015] First, the wiring of the entire switch hardware board is simple. The incoming line only needs to be connected to one neutral wire and one live wire, and connected to the neutral wire conductive plate and the live wire conductive plate respectively. Each live wire completes the switch opening and closing action through a magnetic latching relay, and then distributes it to each terminal, realizing a four-way integrated structure. This enables it to perform functions such as switch opening and closing action execution, switch position judgment, current sampling, current calculation, protection logic, report generation, communication response, and anomaly diagnosis for each power branch. It eliminates the need for parallel wiring between each live wire in existing technologies, thus avoiding wiring complexity.

[0016] Secondly, the current transformer assembly is equipped with a CT circuit board that is electrically connected to it. The CT circuit board is located between the current transformer assembly and the terminal block, and extends along the direction of the arrangement of each current transformer assembly. It is vertically inserted into the core circuit board, thereby completing the function of electrically connecting each current transformer assembly to the core circuit board. There is no need to wire each current transformer, which ensures simple connection and convenient operation.

[0017] Third, the current transformer assembly is fixed on the CT circuit board, and the CT circuit board has several sets of openings in pairs for the live wire and neutral wire to pass through. Through the connection between the current transformer assembly and the CT circuit board, there is no need for lead wire connection between the two, which further ensures that the whole device is easy to assemble.

[0018] Fourth, the current transformer assembly includes a live wire current transformer and a neutral wire current transformer installed on one side of it. The live wire and the neutral wire pass through the measuring holes on the live wire current transformer and the neutral wire current transformer, respectively. For single-phase loads, since the live wire current and the neutral wire current are the same, live wire current transformers and neutral wire current transformers are set up to sample the current and send it to the processor for data comparison and analysis. By comparing the current imbalance between the live wire and the neutral wire, the operating status or working condition of the load can be determined. If necessary, the load switch in the equipment can be remotely controlled to trip. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a plan view of the overall structure of the present invention;

[0022] Figure 3This is an exploded view of the overall structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the core circuit board of the present invention;

[0024] Among them, 1-upper shell, 2-lower shell, 3-flip cover, 4-plug interface, 5-connection port, 6-magnetic latching relay, 7-connection socket, 8-core circuit board, 9-connection terminal, 10-fixing ring, 11-CT circuit board, 12-neutral current transformer, 13-live current transformer, 14-neutral conductive sheet, 15-live conductive sheet. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The purpose of this invention is to provide a switch hardware board mechanism and its micro circuit breaker to solve the problems existing in the prior art. The entire micro circuit breaker is composed of multiple circuits integrated into one unit. Only one neutral wire and one live wire need to be connected to the incoming line, making the wiring simple and quick.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 4 As shown, this embodiment provides a switch hardware board mechanism, including a core circuit board 8 and several magnetic latching relays 6 mounted side by side on one side of the core circuit board 8. Several current transformer assemblies corresponding one-to-one with the magnetic latching relays 6 are mounted on the other side of the core circuit board 8. The current transformer assemblies are provided with terminals 9 and wiring portions at both ends along the axial direction of their measuring holes. The wiring portions include neutral wire conductive plates 14 and live wire conductive plates 15 spaced apart. The live wire conductive plates 15 are connected to the pins of each magnetic latching relay 6, and each magnetic latching relay 6 is also connected to a live wire that is connected to the live wire conductive plate 15. The neutral wire conductive plate 14 is connected with several neutral wires along its extension direction. The neutral wire or live wire passes through the measuring hole of the corresponding current transformer assembly and is connected to the neutral wire insertion hole or live wire insertion hole corresponding to the terminal 9. The ends of the neutral wire conductive plate 14 and the live wire conductive plate 15 are provided with crimp terminals for conducting power.

[0029] The entire switch hardware board has a simple wiring structure. The incoming line only needs to be connected to one neutral wire and one live wire, which are respectively connected to the neutral wire conductive piece 14 and the live wire conductive piece 15. Each live wire completes the switch opening and closing action through the magnetic latching relay 6, and then distributes it to each terminal 9, realizing a four-way integrated structure. It can then undertake the functions of switch opening and closing action execution, switch position judgment, current sampling, current calculation, protection logic, report generation, communication response, and abnormal diagnosis for each power branch. It eliminates the need for the live wire to be paralleled between each line in the existing technology, thus avoiding the complexity of wiring.

[0030] The current transformer assembly is equipped with a CT circuit board 11 that is electrically connected to it. The CT circuit board 11 is located between the current transformer assembly and the terminal 9, and extends along the direction of the arrangement of each current transformer assembly. It is vertically inserted into the core circuit board 8. Preferably, it is connected by soldering with double rows of pins, thereby completing the function of electrically connecting each current transformer assembly to the core circuit board 8. There is no need to wire each current transformer, which ensures simple connection and convenient operation.

[0031] Furthermore, the current transformer assembly is fixed on the CT circuit board 11, and the CT circuit board 11 has several sets of openings in pairs for the live wire and the neutral wire to pass through. Through the connection between the current transformer assembly and the CT circuit board 11, there is no need for lead wire connection between the two, which further ensures that the whole device is easy to assemble.

[0032] Furthermore, the current transformer assembly includes a live wire current transformer 13 and a neutral wire current transformer 12 installed on one side of it. The live wire and neutral wire pass through the measuring holes on the live wire current transformer 13 and the neutral wire current transformer 12, respectively. For single-phase loads, since the live wire current and the neutral wire current are the same, the live wire current transformer 13 and the neutral wire current transformer 12 are set up to sample the current and send it to the processor for data comparison and analysis. By comparing the current imbalance between the live wire and the neutral wire, the operating status or working condition of the load can be determined. If necessary, the load switch in the equipment can be remotely controlled to trip. For example, in a smart energy meter, through self-detection, if a serious imbalance between the live wire and the neutral wire current is encountered, and according to the preset settings inside the energy meter, it can determine whether a single-phase user is using electricity illegally, and generate an alarm signal to prompt the user or automatically control the power supply inside the energy meter to stop.

[0033] Preferably, the crimping terminal includes a retaining ring 10 sleeved on the neutral wire conductive sheet 14 or the live wire conductive sheet 15. The retaining ring 10 is threaded with a conductive bolt for crimping the wire. After the external wire is inserted into the retaining ring 10, the crimping work of the two can be completed quickly through the conductive bolt, saving time and effort.

[0034] In a preferred embodiment of the present invention, both ends of the neutral wire conductive sheet 14 or the live wire conductive sheet 15 are provided with crimp terminals, which facilitates the introduction of external wiring into the neutral wire conductive sheet 14 or the live wire conductive sheet 15 from both ends, and facilitates the subsequent electrical connection between the two switch hardware board mechanisms.

[0035] Furthermore, a miniature circuit breaker is also provided, characterized in that it includes several sets of detachably connected upper housings 1 and lower housings 2. The switch hardware board mechanism is installed between the same set of upper housings 1 and lower housings 2. Preferably, the three components of the lower housing 2, the switch hardware board mechanism, and the upper housing 1 are fixedly assembled from bottom to top with screws. The upper housing 1 has wiring ports 5 at both ends along the extension direction of the neutral wire conductive piece 14 or the live wire conductive piece 15, which are connected to crimp terminals. The lower housing 2 has a wiring interface 4 for exposing the neutral wire insertion hole and the live wire insertion hole of each wiring terminal 9. The lower housing 2 is also provided with a buckle for loosening and tightening the guide rail, so that the entire miniature circuit breaker is installed on the guide rail inside the distribution box.

[0036] Furthermore, a pair of conductive connecting pieces are provided between two adjacent upper housings 1, preferably copper pieces, with plastic insulation in the middle for power connection. Each pair of conductive connecting pieces passes through the corresponding terminal 5 and is connected between the crimp terminals of the two neutral wire conductive pieces 14 or the two live wire conductive pieces 15 to complete the electrical connection between the two switch hardware board mechanisms.

[0037] Preferably, each conductive connecting piece has a connecting hole at both ends, and each connecting hole is inserted into the fixing ring 10 and threadedly connected to the conductive bolt, which makes the entire electrical connection work time-saving and labor-saving.

[0038] Furthermore, the core circuit board 8 has connection sockets 7 at both ends along the extension direction of the neutral wire conductive sheet 14 or the live wire conductive sheet 15. The upper housing 1 has corresponding insertion interfaces at the positions of each connection socket 7. A connecting cable is provided between adjacent upper housings 1, with the plugs at both ends passing through the insertion interfaces of the two upper housings 1 and plugging into the corresponding connection sockets 7, thus realizing the signal connection between the two switch hardware board mechanisms. Preferably, the insertion interface has a U-shaped groove structure, and a flip cover 3 is hinged at the insertion interface to shield it. The flip cover 3 has protrusions on both sides and can be freely detached and fixed to the insertion interface.

[0039] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A switch hardware board mechanism, characterized in that, The device includes a core circuit board and several magnetic latching relays mounted side-by-side on one side of the core circuit board. On the other side of the core circuit board, several current transformer assemblies corresponding to the magnetic latching relays are mounted. Each current transformer assembly has a terminal block and a wiring section at both ends along the axial direction of its measuring hole. The wiring section includes a neutral wire conductive piece and a live wire conductive piece spaced apart. The live wire conductive piece is connected to the pin of each magnetic latching relay, and each magnetic latching relay is also connected to a live wire that conducts through it to the live wire conductive piece. Several neutral wires are connected to the neutral wire conductive piece along its extension direction. The neutral wire or the live wire passes through the measuring hole corresponding to the current transformer assembly and is connected to the neutral wire insertion hole or live wire insertion hole corresponding to the terminal block. The ends of both the neutral wire conductive piece and the live wire conductive piece are provided with crimp terminals for power supply. The current transformer assembly is equipped with a CT circuit board electrically connected to it. The CT circuit board is located between the current transformer assembly and the terminal block, extends along the direction of the arrangement of each current transformer assembly, and is vertically inserted into the core circuit board. The current transformer assembly is fixed on the CT circuit board, and the CT circuit board has a number of pairs of openings for the live wire and the neutral wire to pass through.

2. The switch hardware board mechanism according to claim 1, characterized in that, The current transformer assembly includes a live wire current transformer and a neutral wire current transformer mounted on one side thereof, wherein the live wire and the neutral wire pass through the measuring holes on the live wire current transformer and the neutral wire current transformer, respectively.

3. The switch hardware board mechanism according to claim 2, characterized in that, The crimp terminal includes a retaining ring sleeved on the neutral wire conductive sheet or the live wire conductive sheet, and a conductive bolt for crimping the wire is threaded onto the retaining ring.

4. The switch hardware board mechanism according to claim 3, characterized in that, Both ends of the neutral wire conductive sheet or the live wire conductive sheet are provided with the crimp terminals.

5. A micro-break switch employing the switching hardware board mechanism as described in claim 3 or 4, characterized in that, It includes several sets of detachably connected upper and lower housings. The switch hardware board mechanism is installed between the same set of upper and lower housings. The upper housing has wiring ports at both ends along the extension direction of the neutral wire conductive sheet or the live wire conductive sheet, which are connected to the crimp terminals. The lower housing has a wiring interface for exposing the neutral wire insertion hole and the live wire insertion hole of each of the wiring terminals.

6. The micro-break switch according to claim 5, characterized in that, A pair of conductive connecting pieces are provided between two adjacent upper housings. Each pair of conductive connecting pieces passes through the corresponding wiring port and is connected between the crimp terminals of the two neutral wire conductive pieces or the two live wire conductive pieces.

7. The micro-break switch according to claim 6, characterized in that, Each of the conductive connecting pieces has a connecting hole at both ends, and each connecting hole extends into the fixing ring and is threadedly connected to the conductive bolt.

8. The micro-break switch according to claim 7, characterized in that, The core circuit board is provided with connection sockets at both ends along the extension direction of the neutral wire conductive sheet or the live wire conductive sheet. The upper housing is provided with an interface for each connection socket at the corresponding position. A connection cable is provided between two adjacent upper housings. The plugs at both ends of the connection cable pass through the interfaces of the two upper housings and are plugged into the corresponding connection sockets.

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