Circuit breaker

Abstract

The utility model discloses a circuit breaker, and relates to the technical field of low-voltage electric appliances. The circuit breaker comprises a null line circuit breaker, a live wire circuit breaker and a leakage release, a null line circuit board is arranged in the null line circuit breaker, a live wire circuit board is arranged in the live wire circuit breaker, and the null line circuit board and the live wire circuit board are electrically connected to form a power supply circuit so as to take power from an external power supply through the power supply circuit and supply power to the leakage release; wherein the electric leakage release is arranged in the zero line circuit breaker and is electrically connected with the zero line circuit board, or the electric leakage release is arranged in the live line circuit breaker and is electrically connected with the live line circuit board. According to the circuit breaker, the electric leakage tripper is reasonably arranged, so that the problem that the electric leakage tripper is difficult to use electricity in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a circuit breaker. Background Art

[0002] With the rapid development of social economy and urban construction, people's living standards and housing standards have been significantly improved, and they have a more comprehensive understanding of electricity safety. In order to increase the safety of electricity use, circuit breakers are usually connected to the power circuit. Circuit breakers refer to switching devices that can close, carry and disconnect currents under normal circuit conditions and close, carry and disconnect currents under abnormal circuit conditions within a specified time.

[0003] In the prior art, a 4P circuit breaker generally has a circuit board in one of the phases, which is used to draw power from an external power source and supply power to all components that require power. In order to increase the leakage protection function of the 4P circuit breaker, a leakage release can be added to the 4P circuit breaker. Since there are many components that originally require power in the 4P circuit breaker, it is difficult to arrange the additional leakage release on the circuit board, which causes the problem of difficulty in using power for the leakage release. Utility Model Content

[0004] The utility model aims to provide a circuit breaker, which solves the problem of difficulty in using electricity for the leakage release in the prior art by reasonably arranging the leakage release.

[0005] The embodiment of the utility model is achieved as follows:

[0006] The utility model provides a circuit breaker, including a neutral line circuit breaker, a live line circuit breaker and a leakage release, wherein a neutral line circuit board is arranged in the neutral line circuit breaker, a live line circuit board is arranged in the live line circuit breaker, the neutral line circuit board and the live line circuit board are electrically connected to form a power supply circuit, so as to take power from an external power supply through the power supply circuit and supply power to the leakage release; wherein the leakage release is arranged in the neutral line circuit breaker and electrically connected to the neutral line circuit board, or the leakage release is arranged in the live line circuit breaker and electrically connected to the live line circuit board. The circuit breaker solves the problem of difficulty in using electricity for the leakage release in the prior art by reasonably arranging the leakage release.

[0007] Optionally, the live wire circuit breaker includes an A-phase circuit breaker, a B-phase circuit breaker and a C-phase circuit breaker. When the leakage release is arranged in the live wire circuit breaker, the leakage release can be arranged in any one of the A-phase circuit breaker, the B-phase circuit breaker and the C-phase circuit breaker.

[0008] Optionally, a manual operating mechanism is further provided in the live wire circuit breaker, and the leakage release is used to drive the manual operating mechanism to release in the leakage condition so as to open the circuit breaker.

[0009] Optionally, an electric operating mechanism is further provided in the neutral line circuit breaker, a plug-in terminal is provided on the neutral line circuit board, and a driving component of the electric operating mechanism is inserted into the plug-in terminal to supply power to the driving component of the electric operating mechanism through the neutral line circuit board.

[0010] Optionally, a sampling terminal is further provided on the neutral line circuit board, and a power-taking pin is provided on the sampling terminal. The end of the power-taking pin away from the neutral line circuit board is inserted into the live line circuit board to electrically connect the neutral line circuit board with the live line circuit board.

[0011] Optionally, a pin connector is fixedly provided on the live circuit board, and an end of the power pin away from the neutral circuit board is inserted into the pin connector to electrically connect the power pin to the live circuit board.

[0012] Optionally, a guide column is fixedly arranged between the neutral line circuit board and the live line circuit board, the power extraction pin is inserted into the guide column, and the guide column is used to guide the power extraction pin into the pin connector.

[0013] Optionally, a conductive elastic member is provided between one end of the power pin away from the neutral line circuit board and the live line circuit board, and the conductive elastic member is used to press the power pin tightly between the neutral line circuit board and the live line circuit board.

[0014] Optionally, the conductive elastic member is a conductive metal spring or a metal spring.

[0015] Optionally, the power supply pins include multiple groups, and the multiple groups of power supply pins are arranged in parallel and at intervals.

[0016] The beneficial effects of the embodiments of the utility model include:

[0017] The circuit breaker includes a neutral line circuit breaker, a live line circuit breaker and a leakage release. A neutral line circuit board is arranged in the neutral line circuit breaker, and a live line circuit board is arranged in the live line circuit breaker. The neutral line circuit board and the live line circuit board are electrically connected. Thus, the neutral line circuit board and the live line circuit board jointly form a power supply circuit, so that power can be taken from an external power supply through the power supply circuit, and the leakage release is powered by the power supply circuit, thereby ensuring the reliable operation of the leakage release. On this basis, the leakage release can be arranged in the neutral line circuit breaker and electrically connected to the neutral line circuit board, or the leakage release can be arranged in the live line circuit breaker and electrically connected to the live line circuit board. Thus, by rationally arranging the leakage release, the problem of difficulty in using electricity for the leakage release in the prior art can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a circuit breaker provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the structure of a neutral line circuit board, a live line circuit board and a leakage release provided in an embodiment of the utility model;

[0021] Figure 3 One of the structural schematic diagrams of the neutral line circuit board and the live line circuit board provided in the embodiment of the utility model;

[0022] Figure 4 The second structural schematic diagram of the neutral line circuit board and the live line circuit board provided in the embodiment of the utility model;

[0023] Figure 5 for Figure 4 A partial enlarged view of

[0024] Figure 6 The third structural diagram of the neutral line circuit board and the live line circuit board provided by the embodiment of the utility model;

[0025] Figure 7 for Figure 6 A partial enlarged view of .

[0026] Icons: 100-circuit breaker; 10-neutral line circuit breaker; 11-electric operating mechanism; 12-neutral line circuit board; 121-plug terminal; 122-sampling terminal; 1221-power pin; 20-live line circuit breaker; 21-leakage release; 22-live line circuit board; 221-pin connector; 222-guide column; 223-conductive elastic part; 23-hand operating mechanism. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figures 1 to 7The present application provides a circuit breaker 100, including a neutral line circuit breaker 10, a live line circuit breaker 20 and a leakage release 21. A neutral line circuit board 12 is arranged in the neutral line circuit breaker 10, and a live line circuit board 22 is arranged in the live line circuit breaker 20. The neutral line circuit board 12 and the live line circuit board 22 are electrically connected to form a power supply circuit, so as to take power from an external power supply through the power supply circuit and supply power to the leakage release 21; wherein the leakage release 21 is arranged in the neutral line circuit breaker 10 and electrically connected to the neutral line circuit board 12, or the leakage release 21 is arranged in the live line circuit breaker 20 and electrically connected to the live line circuit board 22. The circuit breaker 100 solves the problem of difficulty in using electricity for the leakage release 21 in the prior art by reasonably arranging the leakage release 21.

[0034] It should be noted that the following text and the accompanying drawings will mainly explain the example in which the leakage release 21 is arranged in the live wire circuit breaker 20 and is electrically connected to the live wire circuit board 22. When the leakage release 21 is arranged in the neutral wire circuit breaker 10 and is electrically connected to the neutral wire circuit board 12, some of the same technical features and beneficial effects of the two embodiments will not be repeated here.

[0035] like Figure 1 As shown, the circuit breaker 100 includes a neutral circuit breaker 10 and a live circuit breaker 20 to improve the power safety of electrical equipment. A neutral circuit board 12 is provided in the neutral circuit breaker 10 to ensure the normal operation of the neutral circuit breaker 10, and a live circuit board 22 is provided in the live circuit breaker 20 to ensure the normal operation of the live circuit breaker 20. In addition, the neutral circuit board 12 and the live circuit board 22 are electrically connected, so that the neutral circuit board 12 and the live circuit board 22 together form a power supply circuit, so that power can be taken from an external power supply through the power supply circuit, and power can be supplied to components that need power through the power supply circuit, thereby ensuring the reliable operation of the circuit breaker 100. For components that require electricity, the components that require electricity can be respectively arranged in the neutral circuit breaker 10 or the live circuit breaker 20, and electrically connected to the neutral circuit board 12 or the live circuit breaker 20, so as to ensure the power supply of the components that require electricity and to reasonably arrange the circuit breaker 100. Here, taking the leakage release 21 as an example, the leakage release 21 can be arranged in the neutral circuit breaker 10 and electrically connected to the neutral circuit board 12, or the leakage release 21 can be arranged in the live circuit breaker 20 and electrically connected to the live circuit board 22.

[0036] Regarding the specific connection method of the electrical connection between the external power supply, the neutral line circuit board 12, the live line circuit board 22 and the leakage release 21, those skilled in the art should be able to make reasonable selections and designs according to actual conditions, and no specific restrictions are made here. For example, two adjacent components on the power supply circuit can be electrically connected by means of wires, terminals, pins, welding, etc.

[0037] For example, the circuit breaker 100 is a 4p circuit breaker, and correspondingly, the live wire circuit breaker 20 includes an A-phase circuit breaker, a B-phase circuit breaker, and a C-phase circuit breaker. Optionally, when the leakage release 21 is disposed in the live wire circuit breaker 20, the leakage release 21 can be disposed in any one of the A-phase circuit breaker, the B-phase circuit breaker, and the C-phase circuit breaker. Those skilled in the art should be able to make reasonable selections and designs according to actual conditions, and no specific restrictions are made here.

[0038] It should be noted that, when the leakage release 21 is arranged in the A-phase circuit breaker, the above-mentioned live circuit board 22 refers to the A-phase circuit board arranged in the A-phase circuit breaker; similarly, when the leakage release 21 is arranged in the B-phase circuit breaker, the above-mentioned live circuit board 22 refers to the B-phase circuit board arranged in the B-phase circuit breaker; when the leakage release 21 is arranged in the C-phase circuit breaker, the above-mentioned live circuit board 22 refers to the C-phase circuit board arranged in the C-phase circuit breaker.

[0039] In addition, it should be noted that compared with the case where the leakage release 21 is set in the neutral line circuit breaker 10, when the leakage release 21 is set in the live line circuit breaker 20, since the live line circuit breaker 20 is opened later than the neutral line circuit breaker 10 during opening and closing, the problem of phase-to-phase short circuit caused by the leakage release 21 being set in the neutral line circuit breaker 10 can be avoided.

[0040] Generally, in order to improve the reliability of the opening and closing of the circuit breaker 100, a manual operating mechanism 23 should be provided in the circuit breaker 100 to control the opening and closing of the circuit breaker 100 through the manual operating mechanism 23. When the manual operating mechanism 23 is arranged, the present application arranges the manual operating mechanism 23 in the live wire circuit breaker 20. Figure 1 As shown, in this embodiment, a manual operating mechanism 23 is further provided in the live wire circuit breaker 20, and the leakage release 21 is used to drive the manual operating mechanism 23 to trip in the leakage condition to open the circuit breaker 100.

[0041] In this embodiment, if Figure 2 and Figure 3 As shown, an electric operating mechanism 11 is also provided in the neutral line circuit breaker 10, and a plug-in terminal 121 is provided on the neutral line circuit board 12. The driving component of the electric operating mechanism 11 is inserted into the plug-in terminal 121 to supply power to the driving component of the electric operating mechanism 11 through the neutral line circuit board 12, thereby ensuring the normal operation of the electric operating mechanism 11.

[0042] It should be noted that, in order to enable the electric operating mechanism 11 to achieve mechanical unlocking through the manual operating mechanism 23, the electric operating mechanism 11 and the manual operating mechanism 23 can be connected through a transmission shaft. For example, the electric operating mechanism 11 includes a driving member (such as a motor), a transmission member (such as a gear set), etc., and the manual operating mechanism 23 includes a handle, a bracket, a tripping member, a locking member, etc. The transmission shaft is arranged in the transmission member and the handle in a direction perpendicular to the housing of the circuit breaker 100, so that the leakage release 21 can drive the manual operating mechanism 23 to trip when the leakage condition occurs, thereby opening the circuit breaker 100.

[0043] In this embodiment, if Figure 2 and Figure 3 As shown, the neutral circuit board 12 is also provided with a sampling terminal 122, and the sampling terminal 122 is provided with a power pin 1221, and the end of the power pin 1221 away from the neutral circuit board 12 is inserted into the live circuit board 22, so that the neutral circuit board 12 is electrically connected to the live circuit board 22. Therefore, after the neutral circuit board 12 completes powering from the external power supply, it can supply power to the live circuit board 22 through the sampling terminal 122.

[0044] In this embodiment, if Figure 2 and Figure 3 As shown, a pin connector 221 is fixedly provided on the live circuit board 22, and the end of the power pin 1221 away from the neutral circuit board 12 is inserted into the pin connector 221, so that the power pin 1221 is electrically connected to the live circuit board 22. Thus, the pin connector 221 can facilitate the corresponding connection between the power pin 1221 and the live circuit board 22.

[0045] Preferably, if Figure 2 and Figure 3 As shown, a guide post 222 is fixedly arranged between the neutral line circuit board 12 and the live line circuit board 22, and the power pin 1221 is inserted into the guide post 222. The guide post 222 is used to guide the power pin 1221 into the pin connector 221. Therefore, the insertion path of the power pin 1221 can be guided by the guide post 222, thereby improving the accuracy of the power pin 1221 when plugging with the pin connector 221.

[0046] It should be understood that in addition to the guide column 222 , the sampling terminal 122 and the pin connector 221 can also guide the insertion path of the power pin 1221 in the connection direction between the two, thereby improving the accuracy of the power pin 1221 when plugging with the pin connector 221 .

[0047] Preferably, if Figure 2 and Figure 3As shown, a conductive elastic member 223 is provided between the end of the power pin 1221 away from the neutral circuit board 12 and the live circuit board 22. The conductive elastic member 223 is used to press the power pin 1221 between the neutral circuit board 12 and the live circuit board 22, so as to improve the stability and reliability of the connection between the neutral circuit board 12 and the live circuit board 22 through the conductive elastic member 223, thereby avoiding connection failure. In addition, the contact area between the power pin 1221 and the live circuit board 22 can be increased through the conductive elastic member 223, so that the power pin 1221 and the live circuit board 22 are easy to install.

[0048] Alternatively, if Figure 4 and Figure 5 As shown, the conductive elastic member 223 is a conductive metal spring, or Figure 6 and Figure 7 As shown, the conductive elastic member 223 is a conductive metal spring, which provides a pressing force through elastic potential energy generated when the conductive elastic member 223 is squeezed.

[0049] Alternatively, if Figure 2 and Figure 3 As shown, the power pins 1221 include multiple groups, and the multiple groups of power pins 1221 are arranged in parallel and at intervals to further improve the reliability of the power supply circuit. In this way, even if some of the power pins 1221 fail to connect, it can ensure that the external power supply can supply power to the leakage release 21. Of course, in other embodiments, the multiple groups of power pins 1221 can also be arranged according to actual conditions, and this is not used to limit the multiple groups of power pins 1221 to be arranged in parallel and at intervals.

[0050] The above description is only an optional embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

Claims

1. A circuit breaker, characterized in that: The invention comprises a neutral line circuit breaker (10), a live line circuit breaker (20) and a leakage release (21); the neutral line circuit breaker (10) is provided with a neutral line circuit board (12), the live line circuit breaker (20) is provided with a live line circuit board (22), the neutral line circuit board (12) and the live line circuit board (22) are electrically connected to form a power supply circuit, so as to obtain power from an external power supply through the power supply circuit and supply power to the leakage release (21); wherein the leakage release (21) is provided in the neutral line circuit breaker (10) and is electrically connected to the neutral line circuit board (12), or the leakage release (21) is provided in the live line circuit breaker (20) and is electrically connected to the live line circuit board (22).

2. The circuit breaker according to claim 1, characterized in that: The live wire circuit breaker (20) comprises an A-phase circuit breaker, a B-phase circuit breaker and a C-phase circuit breaker. When the leakage release (21) is arranged in the live wire circuit breaker (20), the leakage release (21) can be arranged in any one of the A-phase circuit breaker, the B-phase circuit breaker and the C-phase circuit breaker.

3. The circuit breaker according to claim 2, characterized in that: A manual operating mechanism (23) is also provided in the live wire circuit breaker (20), and the leakage release (21) is used to drive the manual operating mechanism (23) to release in the leakage working condition so as to open the circuit breaker (100).

4. The circuit breaker according to claim 1 or 2, characterized in that: An electric operating mechanism (11) is also provided in the neutral line circuit breaker (10), a plug-in terminal (121) is provided on the neutral line circuit board (12), and a driving component of the electric operating mechanism (11) is inserted into the plug-in terminal (121) so as to supply power to the driving component of the electric operating mechanism (11) through the neutral line circuit board (12).

5. The circuit breaker according to claim 1, characterized in that: The neutral line circuit board (12) is also provided with a sampling terminal (122), and the sampling terminal (122) is provided with a power supply pin (1221), and one end of the power supply pin (1221) away from the neutral line circuit board (12) is inserted into the live line circuit board (22), so that the neutral line circuit board (12) is electrically connected to the live line circuit board (22).

6. The circuit breaker according to claim 5, characterized in that: A pin connector (221) is fixedly provided on the live circuit board (22), and one end of the power pin (1221) away from the neutral circuit board (12) is inserted into the pin connector (221) so that the power pin (1221) is electrically connected to the live circuit board (22).

7. The circuit breaker according to claim 6, characterized in that: A guide column (222) is fixedly arranged between the neutral line circuit board (12) and the live line circuit board (22), and the power extraction pin (1221) is inserted into the guide column (222). The guide column (222) is used to guide the power extraction pin (1221) into the pin connector (221).

8. The circuit breaker according to claim 5, characterized in that: A conductive elastic member (223) is provided between one end of the power-taking pin (1221) away from the neutral line circuit board (12) and the live line circuit board (22), and the conductive elastic member (223) is used to press the power-taking pin (1221) between the neutral line circuit board (12) and the live line circuit board (22).

9. The circuit breaker according to claim 8, characterized in that The conductive elastic member (223) is a conductive metal spring or a metal spring.

10. The circuit breaker according to any one of claims 5 to 9, characterized in that: The power supply pins (1221) include a plurality of groups, and the plurality of groups of power supply pins (1221) are arranged in parallel and at intervals.

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