A multipurpose miniature circuit breaker

Abstract

The utility model discloses a multipurpose miniature circuit breaker, include: fire line mechanism, zero line mechanism, apron and leakage communication module, fire line mechanism and zero line mechanism parallelly arranged, apron set up in fire line mechanism and zero line mechanism, leakage communication module set up in the outgoing line end of fire line mechanism and zero line mechanism is used for leakage collection protection and equipment intercommunication, fire line mechanism adopts the overcurrent protection module of thermomagnetic type, zero line mechanism includes electronic main control board and electromechanical drive mechanism, electromechanical drive mechanism sets up with one side of electronic main control board, electromechanical drive mechanism includes direct current motor and gear set, and electromechanical drive mechanism carries out the switching action according to the switching instruction of electronic main control board. The utility model has solved the single function and structure of existing circuit breaker, and the reliability is not high, and the technical problem of unable to satisfy the use of multiple application scenarios.

Description

Technical Field

[0001] This utility model relates to the fields of power and low-voltage electrical appliances, and in particular to a multi-purpose miniature circuit breaker. Background Technology

[0002] With the rise of smart power distribution, smart homes, and the Internet of Things (IoT), the functions of traditional low-voltage circuit breakers no longer meet the intelligent requirements of smart power distribution. Smart power distribution has different product requirements depending on the scenario, and this increase in product requirements inevitably increases the physical space required for the products. Currently, the protection principle of conventional circuit breakers is still a thermomagnetic mechanical structure. Increasing the product size limits its application in terms of space and does not provide a direct replacement for traditional circuit breakers. When product functions increase, reliable physical interaction between different modules is crucial, but currently, increasing the physical connections between different modules results in low product manufacturability and application reliability. The IoT integration of traditional low-voltage circuit breakers requires corresponding reliable uplink and downlink communication methods, and the design of the communication structure should be more convenient and reliable. Specifically, the N-pole of the low-voltage circuit breaker integrates the electromechanical drive mechanism for closing and opening, as well as the main line control board, and also needs an electrical isolation break mechanism. However, current low-voltage circuit breakers do not implement this mechanism. Therefore, there is an urgent need to propose a multi-purpose miniature circuit breaker to solve the technical problems of existing circuit breakers having limited functions and structures, low reliability, and inability to meet the needs of multiple application scenarios. Utility Model Content

[0003] The main purpose of this utility model is to propose a multi-purpose miniature circuit breaker, which aims to solve the technical problems of existing circuit breakers having single functions and structures, low reliability, and inability to meet the needs of multiple application scenarios.

[0004] To achieve the above objectives, this utility model provides a multi-purpose miniature circuit breaker, wherein the multi-purpose miniature circuit breaker comprises:

[0005] Live wire mechanism, neutral wire mechanism, cover plate and leakage communication module;

[0006] The live wire mechanism and the neutral wire mechanism are arranged in parallel. The cover plate is arranged on the live wire mechanism and the neutral wire mechanism. The leakage current communication module is arranged at the output end of the live wire mechanism and the neutral wire mechanism for leakage current acquisition and protection and communication between devices.

[0007] The fire wire mechanism uses a thermomagnetic overcurrent protection module;

[0008] The neutral wire mechanism includes an electronic main control board and an electromechanical transmission mechanism. The electromechanical transmission mechanism is located on one side of the electronic main control board and includes a DC motor and a gear set. The electromechanical transmission mechanism performs opening and closing actions according to the opening and closing commands of the electronic main control board.

[0009] In one preferred embodiment, the live wire mechanism includes an automatic opening and closing mechanism; the automatic opening and closing mechanism includes an integrated series trip unit and a free trip mechanism; the free trip mechanism is disposed on one side of the integrated series trip unit, and the integrated series trip unit is used to push the free trip mechanism to perform opening and closing operations; the integrated series trip unit includes a leakage current protection trip unit and a short circuit protection trip unit.

[0010] In one preferred embodiment, the live wire mechanism includes a manual opening and closing mechanism; the manual opening and closing mechanism includes a circuit breaker operating handle and a free trip mechanism, wherein the circuit breaker operating handle is used to push the free trip mechanism to perform the opening and closing operation.

[0011] In one preferred embodiment, the live wire mechanism further includes a metering transformer and an overload trip unit; the metering transformer is used to collect the load current of the connected live wire.

[0012] In one preferred embodiment, the neutral wire mechanism further includes a power supply board, which is connected to the circuit breaker terminal block via a power supply spring and to the electronic main control board via pin headers and sockets.

[0013] In one preferred embodiment, the leakage current communication module is detachably installed at the output terminals of the live wire mechanism and the neutral wire mechanism.

[0014] In one preferred embodiment, the leakage communication module includes a leakage housing, a leakage communication circuit board, and a leakage module pin header and socket.

[0015] One side of the leakage current enclosure is open, the leakage current communication circuit board is located on the open side of the leakage current enclosure and is fixedly connected by a connector, and the leakage current module pin header and socket are installed on the side of the leakage current communication circuit board away from the leakage current enclosure and are connected to the electronic main control board of the neutral wire structure through a leakage current adapter board.

[0016] In one preferred embodiment, several temperature measuring modules are plugged into the side of the leakage communication circuit board away from the leakage cover, and the temperature measuring surface of the temperature measuring module is in close contact with the outgoing busbar of the neutral wire mechanism.

[0017] In one preferred embodiment, the leakage current cover is further provided with several raised protective ribs.

[0018] In one preferred embodiment, the cover plate includes an integrated inlet cover plate and an integrated outlet cover plate. The integrated inlet cover plate is disposed near the inlet end of the live wire mechanism and the neutral wire mechanism, and the integrated outlet cover plate is disposed near the outlet end of the live wire mechanism and the neutral wire mechanism.

[0019] In the above technical solution of this utility model, the multi-purpose miniature circuit breaker includes: a live wire mechanism, a neutral wire mechanism, a cover plate, and a leakage current communication module; the live wire mechanism and the neutral wire mechanism are arranged in parallel, the cover plate is disposed on the live wire mechanism and the neutral wire mechanism, and the leakage current communication module is disposed at the output end of the live wire mechanism and the neutral wire mechanism for leakage current acquisition and protection and inter-device communication; the live wire mechanism adopts a thermomagnetic overcurrent protection module; the neutral wire mechanism includes an electronic main control board and an electromechanical transmission mechanism, the electromechanical transmission mechanism is disposed on one side of the electronic main control board, the electromechanical transmission mechanism includes a DC motor and a gear set, and the electromechanical transmission mechanism performs opening and closing actions according to the opening and closing commands of the electronic main control board. This utility model solves the technical problems of existing circuit breakers having single functions and structures, low reliability, and inability to meet the needs of multiple application scenarios.

[0020] In this invention, by setting an automatic opening and closing mechanism and a manual opening and closing mechanism in the live wire mechanism, the circuit breaker's manual and remote automatic opening and closing functions can be realized.

[0021] In this invention, by setting a detachable leakage current communication module at the output end of the live wire mechanism and the neutral wire mechanism, the product function of the circuit breaker is expanded. At the same time, by setting a temperature measuring module on the leakage current communication circuit board, the temperature of the output busbar of the neutral wire mechanism of the circuit breaker is measured. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a first schematic diagram of a multi-purpose miniature circuit breaker according to an embodiment of the present invention;

[0024] Figure 2 This is a second schematic diagram of a multi-purpose miniature circuit breaker according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the fire wire mechanism in an embodiment of this utility model;

[0026] Figure 4 This is a first schematic diagram of the interior of the zero-wire mechanism in an embodiment of this utility model;

[0027] Figure 5 This is a second schematic diagram of the interior of the zero-wire mechanism in an embodiment of this utility model;

[0028] Figure 6 This is a first connection diagram of the power supply board in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the second connection of the power supply board in an embodiment of the present invention.

[0030] Figure 8 This is a first schematic diagram of the leakage communication module according to an embodiment of the present invention;

[0031] Figure 9 This is a second schematic diagram of the leakage communication module according to an embodiment of the present invention;

[0032] Figure 10 This is a third schematic diagram of the leakage communication module according to an embodiment of the present utility model;

[0033] Figure 11 This is a fourth schematic diagram of the leakage communication module according to an embodiment of the present invention;

[0034] Figure 12 This is the fifth schematic diagram of the leakage communication module in this embodiment of the present invention;

[0035] Figure 13 This is a schematic diagram of the installation of the metrology CT plate according to an embodiment of the present invention.

[0036] Explanation of icon numbers:

[0037] 1. Live wire mechanism; 2. Neutral wire mechanism; 3. Leakage current communication module; 4. Integrated inlet cover; 5. Integrated outlet cover; 1.1. Fastening screws; 1.1.1. Circuit breaker terminal block; 1.2. Leakage current protection trip unit; 1.3. Short circuit protection trip unit; 1.4. Circuit breaker operating handle; 1.5. Free trip mechanism; 1.5.1. Circuit breaker contacts; 1.6. Metering transformer; 1.7. Overload trip unit; 2.1. N-pole contact structure; 2.2. Plastic small cover; 2.3. Electronic main control board; 2.4. Operation... 2.5 Horizontal indicator light; 2.6 Test button; 2.7 Communication indicator light; 2.8 Electromechanical transmission mechanism; 2.9 Power supply board; 2.01 Power take-up spring; 2.02 Pin header and socket; 2.03 Neutral wire mechanism output busbar; 3.1 Leakage communication circuit board; 3.11 Temperature measurement module; 3.2 Leakage module pin header and socket; 3.3 Leakage adapter board; 3.4 Leakage housing; 3.41 Protective rib; 6 Gear set; 7 DC motor; 8 Tripping lever; 9 N-pole moving contact; 10 N-pole output board.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0040] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0041] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] See Figures 1-2 According to one aspect of this utility model, a multi-purpose miniature circuit breaker is provided, wherein the multi-purpose miniature circuit breaker comprises:

[0043] Live wire mechanism 1, neutral wire mechanism 2, cover plate and leakage communication module 3;

[0044] The live wire mechanism 1 and the neutral wire mechanism 2 are arranged in parallel. The cover plate is arranged on the live wire mechanism 1 and the neutral wire mechanism 2. The leakage current communication module 3 is arranged at the output end of the live wire mechanism 1 and the neutral wire mechanism 2 for leakage current acquisition and protection and communication between devices.

[0045] The fire wire mechanism 1 adopts a thermomagnetic overcurrent protection module;

[0046] The neutral wire mechanism 2 includes an electronic main control board 2.3 and an electromechanical transmission mechanism 2.7. The electromechanical transmission mechanism 2.7 is located on one side of the electronic main control board 2.3. The electromechanical transmission mechanism 2.7 includes a DC motor 7 and a gear set 6. The electromechanical transmission mechanism 2.7 performs opening and closing actions according to the opening and closing commands of the electronic main control board 2.3.

[0047] Specifically, in this embodiment, see Figure 3The live wire mechanism 1 has a fastening screw 1.1 at its inlet end, which is used to fix the live wire inlet. The live wire mechanism 1 includes an automatic opening and closing mechanism. The automatic opening and closing mechanism includes an integrated series trip unit and a free trip mechanism 1.5. The free trip mechanism 1.5 is located on one side of the integrated series trip unit, and the integrated series trip unit is used to push the free trip mechanism 1.5 to perform the opening and closing operation. The integrated series trip unit includes a residual current device (RCD) trip unit 1.2 and a RCD trip unit 1.3. The RCD trip unit... Both the trip unit 1.2 and the residual current device (RCD) 1.3 consist of a moving iron core and a stationary iron core. In the event of a fault, the moving iron core generates a rightward thrust due to the Lorentz magnetic force. This thrust, within a certain time, triggers the free trip mechanism 1.5 to perform the tripping action. The RCD 1.2 and RCD 1.3 operate independently. The RCD 1.2 receives electrical signals from the electronic main control board 2.3 for protection, while the RCD 1.3 generates electromagnetic force to complete the action of the moving iron core when the short-circuit current exceeds a certain value.

[0048] Specifically, in this embodiment, the live wire mechanism 1 includes a manual opening and closing mechanism; the manual opening and closing mechanism includes a circuit breaker operating handle 1.4 and a free trip mechanism 1.5, the circuit breaker operating handle 1.4 is used to push the free trip mechanism 1.5 to perform opening and closing operations; the free trip mechanism 1.5 connects the circuit breaker operating handle 1.4 and the circuit breaker contact 1.51, and is the mechanism part that completes the electrical insulation isolation of the circuit breaker.

[0049] Specifically, in this embodiment, the live wire mechanism 1 further includes a metering transformer 1.6 and an overload trip unit 1.7; the metering transformer 1.6 is used to collect the load current of the connected live wire, and the electronic main control board 2.3 can realize the measurement function of electrical parameters; the overload trip unit 1.7 is a bimetallic strip. When a large current passes through, the overload trip unit 1.7 will deform due to the different expansion coefficients at high temperature, thereby pushing the trip rod 8 to realize the trip protection of the product. The overload trip unit 1.7 is a bimetallic strip connected in series to the current circuit, and is actually connected to the soft connection of the current circuit at the end of the circuit.

[0050] Specifically, in this embodiment, see Figures 4-7The neutral wire mechanism 2 includes an N-pole contact structure 2.1, which is fixed by a small plastic cover 2.2 to achieve electrical isolation between the N-pole contact structure 2.1 and the electronic main control board 2.3. The neutral wire mechanism 2 also includes a running indicator light 2.4, a test button 2.5, and a communication indicator light 2.6. The running indicator light 2.4 indicates the current operating status of the circuit breaker. The test button 2.5 is used for reset or leakage current testing after a product failure. A communication indicator light 2.6 is located beside the test button 2.5, indicating whether the circuit breaker's communication is normal during operation. The neutral wire mechanism 2 also includes a power supply board 2.8, which is connected to the circuit breaker incoming terminal block 1.11 via a power-taking spring 2.81 and to the electronic main control board 2.3 via a pin header and nut 2.82. The power supply board 2.8 is inserted into the circuit breaker body for power supply. The solder pad of the power supply board 2.8 contacts the power-taking spring 2.81, which is pressed onto the circuit breaker incoming terminal block 1.11. During installation, the power supply board 2.8 is inserted, and the solder pad contacts the corresponding power-taking spring 2.81. This power supply method is simple to install and provides convenient and reliable power supply.

[0051] Specifically, in this embodiment, see Figures 8-12 The leakage current communication module 3 is detachably installed at the output terminals of the live wire mechanism 1 and the neutral wire mechanism 2. The leakage current communication module 3 includes a leakage current housing 3.4, a leakage current communication circuit board 3.1, and leakage current module pin headers and nuts 3.2. One side of the leakage current housing 3.4 is open, and the leakage current communication circuit board 3.1 is located on the open side of the leakage current housing 3.4 and fixedly connected by a connector. The leakage current communication circuit board 3.1 is installed on one side of the leakage current housing 3.4 to form a receiving cavity, which integrates the necessary components of the leakage current communication module 3. This utility model does not impose specific limitations; conventional modules can be used. The leakage current module pin headers and nuts 3.2 are installed on the leakage current communication... The circuit board 3.1 is located on the side away from the leakage cover 3.4 and is connected to the electronic main control board 2.3 of the neutral wire mechanism 2 via a leakage adapter plate 3.3. In this utility model, the leakage communication circuit board 3.1 is fixed to the leakage cover 3.4 with screws. Several temperature measuring modules 3.11 are inserted into the side of the leakage communication circuit board 3.1 away from the leakage cover 3.4. The temperature measuring surface of the temperature measuring module 3.11 is in close contact with the neutral wire mechanism output busbar 2.9 and is used to measure the temperature of the neutral wire mechanism 2 output busbar. Several raised protective ribs 3.41 are also provided inside the leakage cover 3.4. The leakage communication circuit board 3.1 is fixed by the protective ribs 3.41 and the high voltage of the busbar is electrically isolated.

[0052] Specifically, in this embodiment, see Figure 13 The cover plate includes an integrated inlet cover plate 4 and an integrated outlet cover plate 5. The integrated inlet cover plate 4 is disposed near the inlet end of the live wire mechanism 1 and the neutral wire mechanism 2, and the integrated outlet cover plate 5 is disposed near the outlet end of the live wire mechanism 1 and the neutral wire mechanism 2. The integrated outlet cover plate 5 has a groove structure underneath, which is used to install the metering CT plate. The metering CT plate is detachably installed in the groove structure. Figure 12 Part A is a slotted structure for installing the metrology CT board. The metrology CT board is connected to the electronic main control board 2.3 of the neutral wire mechanism 2. The integrated cable outlet cover 5 is provided with a clamping mechanism on the side connected to the live wire mechanism 1 and the neutral wire mechanism 2. The clamping mechanism enables disassembly and connection with the live wire mechanism 1 and the neutral wire mechanism 2.

[0053] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A multi-purpose miniature circuit breaker, characterized in that, include: Live wire mechanism, neutral wire mechanism, cover plate and leakage communication module; The live wire mechanism and the neutral wire mechanism are arranged in parallel. The cover plate is arranged on the live wire mechanism and the neutral wire mechanism. The leakage current communication module is arranged at the output end of the live wire mechanism and the neutral wire mechanism for leakage current acquisition and protection and communication between devices. The fire wire mechanism uses a thermomagnetic overcurrent protection module; The neutral wire mechanism includes an electronic main control board and an electromechanical transmission mechanism. The electromechanical transmission mechanism is located on one side of the electronic main control board and includes a DC motor and a gear set. The electromechanical transmission mechanism performs opening and closing actions according to the opening and closing commands of the electronic main control board.

2. The multi-purpose miniature circuit breaker according to claim 1, characterized in that, The live wire mechanism includes an automatic opening and closing mechanism; the automatic opening and closing mechanism includes an integrated series trip unit and a free trip mechanism; the free trip mechanism is disposed on one side of the integrated series trip unit, and the integrated series trip unit is used to push the free trip mechanism to perform opening and closing operations; the integrated series trip unit includes a leakage current protection trip unit and a short circuit protection trip unit.

3. A multi-purpose miniature circuit breaker according to any one of claims 1-2, characterized in that, The live wire mechanism includes a manual opening and closing mechanism; the manual opening and closing mechanism includes a circuit breaker operating handle and a free trip mechanism, the circuit breaker operating handle being used to push the free trip mechanism to perform opening and closing operations.

4. A multi-purpose miniature circuit breaker according to any one of claims 1-2, characterized in that, The live wire mechanism also includes a metering transformer and an overload trip unit; the metering transformer is used to collect the load current of the connected live wire.

5. A multi-purpose miniature circuit breaker according to any one of claims 1-2, characterized in that, The neutral wire mechanism also includes a power supply board, which is connected to the circuit breaker terminal block via a power supply spring and to the electronic main control board via pin headers and sockets.

6. A multi-purpose miniature circuit breaker according to any one of claims 1-2, characterized in that, The leakage current communication module can be detachably installed at the output terminals of the live wire mechanism and the neutral wire mechanism.

7. A multi-purpose miniature circuit breaker according to any one of claims 1-2, characterized in that, The leakage communication module includes a leakage housing, a leakage communication circuit board, and a leakage module pin header and socket. One side of the leakage current enclosure is open, the leakage current communication circuit board is located on the open side of the leakage current enclosure and is fixedly connected by a connector, and the leakage current module pin header and socket are installed on the side of the leakage current communication circuit board away from the leakage current enclosure and are connected to the electronic main control board of the neutral wire structure through a leakage current adapter board.

8. A multi-purpose miniature circuit breaker according to claim 7, characterized in that, Several temperature measuring modules are plugged into the side of the leakage communication circuit board away from the leakage cover, and the temperature measuring surface of the temperature measuring module is in close contact with the outgoing busbar of the neutral wire mechanism.

9. A multi-purpose miniature circuit breaker according to claim 7, characterized in that, The leakage protection cover is also equipped with several raised protective ribs.

10. A multi-purpose miniature circuit breaker according to any one of claims 1-2, characterized in that, The cover plate includes an integrated inlet cover plate and an integrated outlet cover plate. The integrated inlet cover plate is disposed near the inlet end of the live wire mechanism and the neutral wire mechanism, and the integrated outlet cover plate is disposed near the outlet end of the live wire mechanism and the neutral wire mechanism.

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