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 shell, and a circuit board, an operating mechanism, an electric leakage release and a power taking mechanism which are arranged in the shell, wherein the power taking mechanism is used for taking power from the circuit board and supplying power to the electric leakage release; when the circuit breaker is switched on, the power taking mechanism is in contact with the electric leakage tripper, so that the circuit board is communicated with the electric leakage tripper through the power taking mechanism; when the circuit breaker is opened, the operating mechanism abuts against the electricity taking mechanism to drive the electricity taking mechanism to be separated from the electric leakage tripper, so that the circuit board is disconnected from the electric leakage tripper. The circuit breaker can solve the problem of loss caused by the fact that a circuit board is in a continuous power-on state to supply power to an electric leakage release in the prior art.

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] The circuit breaker in the prior art is generally provided with a leakage release inside, so as to provide leakage protection for the power circuit through the leakage release. The circuit breaker products currently on the market, whether in the closed state or the open state, all supply power to the leakage release through the circuit board. Although this can ensure the reliable operation of the leakage release, there is a problem that the circuit board is in a continuously powered state to supply power to the leakage release, which causes unnecessary losses and shortens the service life of the circuit breaker. Utility Model Content

[0004] The utility model aims to provide a circuit breaker, which can solve the loss problem in the prior art caused by the circuit board being in a continuously energized state to supply power to the leakage release.

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

[0006] The utility model provides a circuit breaker, including a housing, a circuit board, an operating mechanism, a leakage release and a power taking mechanism arranged in the housing, wherein the power taking mechanism is used to take power from the circuit board and supply power to the leakage release; when the circuit breaker is closed, the power taking mechanism contacts the leakage release, so that the circuit board is connected to the leakage release through the power taking mechanism; when the circuit breaker is opened, the operating mechanism abuts against the power taking mechanism, driving the power taking mechanism to separate from the leakage release, so that the circuit board is disconnected from the leakage release. The circuit breaker can solve the loss problem in the prior art caused by the circuit board being in a continuously powered state to supply power to the leakage release.

[0007] Optionally, the leakage releaser includes a magnetic yoke, and the power-taking mechanism includes a power-taking spring, which is rotatably arranged in the shell, one end of the power-taking spring is electrically connected to the circuit board, and the other end abuts against the operating mechanism to store energy and has a tendency to rotate toward a side close to the magnetic yoke.

[0008] Optionally, the power-taking spring includes a spring body and a first extension arm and a second extension arm arranged on the spring body, the spring body is rotatably arranged in the shell, the first extension arm is electrically connected to the circuit board, and the second extension arm extends toward a side close to the operating mechanism so that the second extension arm is located on the rotation path of the operating mechanism, and the magnetic yoke is located on the rotation path of the second extension arm.

[0009] Optionally, the power collection mechanism further includes a power collection post, the power collection post is fixedly disposed on the circuit board, and the first extension arm has a hook-shaped connecting portion, and the hook-shaped connecting portion is hung on the power collection post.

[0010] Optionally, the operating mechanism includes a handle and a moving contact assembly, the handle is rotatably disposed in the housing, the handle is driven to drive the moving contact assembly to open and close the circuit breaker, a second abutting portion is provided on the moving contact assembly, and the second extension arm is used to abut against the second abutting portion.

[0011] Optionally, the magnetic yoke includes a yoke body and a power taking portion arranged on the yoke body, the power taking portion is located on the rotation path of the second extension arm, and the second extension arm contacts the power taking portion to connect the power taking spring to the magnetic yoke.

[0012] Optionally, the power taking portion extends in a direction perpendicular to the yoke body toward a side away from the circuit board.

[0013] Optionally, a limiting portion is further provided at one end of the power taking portion away from the yoke body, and the yoke body, the power taking portion and the limiting portion together form a semi-enclosed structure to limit the second extension arm.

[0014] Optionally, the limiting portion is parallel to the yoke body and is spaced apart from each other.

[0015] Optionally, a mounting post is provided on the shell, and the power extraction spring is sleeved on the mounting post so that the power extraction spring is rotatably disposed in the shell.

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

[0017] The circuit breaker includes a shell and a circuit board, an operating mechanism, a leakage release and a power-taking mechanism arranged in the shell. The power-taking mechanism is used to take power from the circuit board and supply power to the leakage release; when the circuit breaker is closed, the power-taking mechanism contacts the leakage release so that the circuit board is connected to the leakage release through the power-taking mechanism. In actual use, when the circuit breaker is in a closed state, the power-taking mechanism contacts the leakage release so that the circuit board is connected to the leakage release through the power-taking mechanism, so that the circuit board can supply power to the leakage release, ensuring that the leakage release can work reliably; when the circuit breaker is in an open state, the operating mechanism abuts against the power-taking mechanism, driving the power-taking mechanism to separate from the leakage release, so that the circuit board is disconnected from the leakage release, so that the circuit board no longer supplies power to the leakage release, reducing unnecessary losses and increasing the service life of the circuit breaker. 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 when it is closed provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the structure of a circuit breaker when it is opened provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the structure of the power taking mechanism and the leakage release device abutting against each other provided by an embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the structure of the abutment between the power taking mechanism and the operating mechanism provided by one embodiment of the utility model;

[0023] Figure 5 A schematic diagram of the structure of a power supply mechanism provided in one embodiment of the utility model;

[0024] Figure 6 This is one of the structural schematic diagrams of a circuit breaker when it is closed, provided by another embodiment of the utility model;

[0025] Figure 7 A second structural schematic diagram of a circuit breaker when it is closed provided by another embodiment of the utility model;

[0026] Figure 8 One of the structural schematic diagrams of a circuit breaker when opening provided by another embodiment of the utility model;

[0027] Fig. 9 A second structural schematic diagram of a circuit breaker when opening provided by another embodiment of the utility model;

[0028] Fig.10 A third structural diagram of a circuit breaker when opening provided by another embodiment of the utility model;

[0029] Fig.11 One of the structural schematic diagrams of a circuit breaker provided in yet another embodiment of the utility model;

[0030] Fig.12 The second structural schematic diagram of a circuit breaker provided in yet another embodiment of the utility model.

[0031] Icon: 100-circuit breaker; 10-housing; 11-mounting column; 21-circuit board; 30-operating mechanism; 31-button; 32-handle; 321-first abutting portion; 33-moving contact assembly; 331-second abutting portion; 40-leakage releaser; 41-yoke; 411-yoke body; 412-power supply portion; 413-limiting portion; 50-power supply mechanism; 51-power supply spring; 511-spring body; 512-first extension arm; 5121-hook-shaped connecting portion; 513-second extension arm; 514-third extension arm; 515-fourth extension arm; 516-fifth extension arm; 517-sixth extension arm; 52-power supply column; 60-test button. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] First embodiment

[0039] Please refer to Figures 1 to 5 The embodiment of the present application provides a circuit breaker 100, including a housing 10, a circuit board 21, an operating mechanism 30, a leakage release 40 and a power taking mechanism 50 arranged in the housing 10, wherein the power taking mechanism 50 is used to take power from the circuit board 21 and supply power to the leakage release 40; when the circuit breaker 100 is closed, the power taking mechanism 50 contacts the leakage release 40, so that the circuit board 21 is connected to the leakage release 40 through the power taking mechanism 50; when the circuit breaker 100 is opened, the operating mechanism 30 abuts against the power taking mechanism 50, driving the power taking mechanism 50 to separate from the leakage release 40, so that the circuit board 21 is disconnected from the leakage release 40. The circuit breaker 100 can solve the loss problem in the prior art caused by the circuit board 21 being in a continuously energized state to supply power to the leakage release 40.

[0040] It should be noted that if Figure 1 and Figure 2As shown, the circuit breaker 100 includes a housing 10, a circuit board 21, an operating mechanism 30, a leakage release 40 and a power taking mechanism 50, so that the housing 10 provides support and protection for the circuit board 21, the operating mechanism 30, the leakage release 40 and the power taking mechanism 50, the circuit board 21 is connected to an external power supply to provide power, the opening and closing of the circuit breaker 100 is controlled by the operating mechanism 30, the leakage release 40 provides leakage protection for the power circuit, and the power taking mechanism 50 takes power from the circuit board 21 and supplies power to the leakage release 40, so as to ensure the reliable operation of the leakage release 40, thereby improving the safety performance of the circuit breaker 100.

[0041] Regarding the specific structures of the housing 10, the operating mechanism 30 and the leakage release 40, those skilled in the art should be able to make reasonable selections and designs with reference to the prior art, and no specific restrictions are made here. For example, the housing 10 may include two mutually interlocking sub-housings 10. In order to facilitate understanding of the internal structure of the circuit breaker 100, one of the sub-housings 10 is hidden in the figure; the operating mechanism 30 includes a handle 32 and a moving contact assembly 33, the handle 32 is rotatably arranged in the housing 10, and the handle 32 is driven to drive the moving contact assembly 33 to control the opening and closing of the circuit breaker 100, wherein, in this embodiment, the operating mechanism 30 may also include a button 31 to drive the handle 32 through the button 31, and of course, in other embodiments, the handle 32 may also be driven by a gear, and no specific restrictions are made here; the leakage release 40 includes a yoke 41, a leakage coil, a top rod, a moving iron core, an iron core spring and a static iron core, etc., to trip and disconnect the power circuit when a leakage fault occurs.

[0042] In the prior art, circuit breakers are powered by the circuit board for the leakage release device regardless of whether they are in the closed state or the open state, which causes the problem that the circuit board is in a continuously powered state. In order to solve the above problem, the circuit breaker 100 provided in the embodiment of the present application has a power supply mechanism 50 that is always electrically connected to the circuit board 21 and is in contact or separation with the leakage release device 40. Specifically, Figure 1 As shown, when the circuit breaker 100 is in the closed state, the power taking mechanism 50 contacts the leakage release 40, so that the circuit board 21 is connected to the leakage release 40 through the power taking mechanism 50, so that the circuit board 21 can supply power to the leakage release 40, ensuring that the leakage release 40 can work reliably; Figure 2 As shown, when the circuit breaker 100 is in the open state, the operating mechanism 30 abuts against the power taking mechanism 50, driving the power taking mechanism 50 to separate from the leakage release 40, so that the circuit board 21 is disconnected from the leakage release 40, so that the circuit board 21 no longer supplies power to the leakage release 40, thereby reducing unnecessary losses and increasing the service life of the circuit breaker 100.

[0043] like Figure 3 and Figure 4 As shown, in this embodiment, the leakage release 40 includes a yoke 41, and the power taking mechanism 50 includes a power taking spring 51, which is rotatably arranged in the housing 10, one end of the power taking spring 51 is electrically connected to the circuit board 21, and the other end abuts against the operating mechanism 30 to store energy and has a movement tendency to rotate toward the side close to the yoke 41. The yoke 41 is connected to the leakage coil to power the leakage release 40 through the leakage coil.

[0044] It should be noted that if Figure 4 As shown in FIG. 1 , when the circuit breaker 100 is in the open state, the other end of the power spring 51 abuts against the operating mechanism 30. During this process, the power spring 51 continuously stores elastic potential energy, and the other end of the power spring 51 has a tendency to rotate toward the side close to the yoke 41. When the circuit breaker 100 switches from the open state to the closed state, the operating mechanism 30 rotates clockwise relative to the housing 10. Figure 3 As shown, when the circuit breaker 100 is in the closed state, the operating mechanism 30 is separated from the other end of the power-taking spring 51, and no longer applies a resisting force to the other end of the power-taking spring 51. The other end of the power-taking spring 51 releases its elastic potential energy and rotates toward the side close to the yoke 41 under the action of the elastic potential energy until the other end of the power-taking spring 51 contacts the yoke 41. As a result, one end of the power-taking spring 51 is electrically connected to the circuit board 21 and the other end is electrically connected to the yoke 41, so that the circuit between the circuit board 21 and the leakage release 40 is connected through the power-taking mechanism 50, so that the circuit board 21 can supply power to the leakage release 40.

[0045] Please refer to Figure 5 In this embodiment, the power-taking spring 51 includes a spring body 511 and a first extension arm 512 and a second extension arm 513 arranged on the spring body 511. The spring body 511 is rotatably arranged in the housing 10. The first extension arm 512 is electrically connected to the circuit board 21. The second extension arm 513 extends toward a side close to the operating mechanism 30 so that the second extension arm 513 is located on the rotation path of the operating mechanism 30. As a result, the operating mechanism 30 can abut against or separate from the second extension arm 513 during its rotation. The yoke 41 is located on the rotation path of the second extension arm 513. As a result, the second extension arm 513 can abut against or separate from the yoke 41 during its rotation.

[0046] Specifically, Figure 4 As shown, in this embodiment, a second abutting portion 331 is provided on the moving contact assembly 33, and the second extension arm 513 is used to abut against the second abutting portion 331. Therefore, during the opening and closing process of the circuit breaker 100, the button 31 is driven to drive the handle 32 to rotate relative to the housing 10, so that the moving contact assembly 33 is actuated and abuts against or separates from the second extension arm 513.

[0047] like Figures 3 to 5 As shown, in this embodiment, the power taking mechanism 50 also includes a power taking post 52, which is fixedly arranged on the circuit board 21, and the first extension arm 512 has a hook-shaped connecting portion 5121, which is hung on the power taking post 52, so that the power taking spring 51 is electrically connected to the circuit board 21 through the power taking post 52. For example, Figure 5 As shown, the end of the first extension arm 512 has a hook-shaped connection portion 5121, which can ensure the stability of the connection between the power spring 51 and the power post 52 and avoid interference with the rotation of the power spring 51 relative to the housing 10. Of course, in other embodiments, the first extension arm 512 can also have a circular ring connection portion, so as to be sleeved on the power post 52 through the circular ring connection portion.

[0048] like Figure 3 and Figure 4 As shown, in this embodiment, the yoke 41 includes a yoke body 411 and a power-taking portion 412 disposed on the yoke body 411, the power-taking portion 412 is located on the rotation path of the second extension arm 513, and the second extension arm 513 contacts the power-taking portion 412, so that the power-taking spring 51 is connected to the yoke 41. In other words, the power-taking portion 412 is located within a fan-shaped range formed by taking the rotation center of the spring body 511 as the center of the circle, the length of the second extension arm 513 as the radius, and the rotation angle of the second extension arm 513 as the central angle, so as to ensure that the power-taking portion 412 is in contact with the second extension arm 513, so that the circuit board 21 is connected to the yoke 41 through the power-taking column 52 and the power-taking spring 51.

[0049] Among them, Figure 3 As shown, in this embodiment, the power taking portion 412 extends in a direction perpendicular to the yoke body 411 toward a side away from the circuit board 21. Regarding the specific length of the power taking portion 412, those skilled in the art should be able to reasonably design it according to the height of the second extension arm 513, and it is only necessary to make the length of the power taking portion 412 greater than or equal to the height of the second extension arm 513 to ensure that the power taking portion 412 can achieve contact with the second extension arm 513.

[0050] like Figure 3 As shown, in this embodiment, a limiting portion 413 is further provided at one end of the power taking portion 412 away from the yoke body 411, and the yoke body 411, the power taking portion 412 and the limiting portion 413 together form a semi-enclosed structure to limit the second extension arm 513, thereby preventing the second extension arm 513 from being separated from the power taking portion 412 at one end of the power taking portion 412 away from the yoke body 411, so as to further ensure the reliability of the electrical connection between the power taking spring 51 and the yoke 41. Figure 3As shown, in this embodiment, the limiting portion 413 is parallel to the yoke body 411 and is spaced apart so that the cross-sectional shape of the semi-enclosed structure formed by the yoke body 411 , the power taking portion 412 and the limiting portion 413 is U-shaped.

[0051] like Figures 1 to 4 As shown, in this embodiment, a mounting post 11 is provided on the shell 10, and a power-taking spring 51 is sleeved on the mounting post 11, so that the power-taking spring 51 is rotatably arranged in the shell 10, so that when the circuit breaker 100 is closed, the power-taking spring 51 can be rotated to contact the leakage release 40, thereby connecting the power supply; when the circuit breaker 100 is opened, the power-taking spring 51 can be rotated to separate from the leakage release 40 under the action of the moving contact assembly 33, thereby disconnecting the power supply.

[0052] Second embodiment

[0053] Please refer to Figures 6 to 10 The embodiment of the present application provides a circuit breaker 100, including a housing 10 and a circuit board 21, an operating mechanism 30, a leakage release 40 and a power supply mechanism 50 arranged in the housing 10. The power supply mechanism 50 is used to draw power from the circuit board 21 and supply power to the leakage release 40. The power supply mechanism 50 includes a power supply spring 51 and a power supply post 52. The power supply post 52 is fixedly arranged on the circuit board 21. Different from the above-mentioned embodiment, the power supply spring 51 is always electrically connected to the leakage release 40 and is in contact with or separated from the power supply post 52. Specifically, as Figure 6 and Figure 7 As shown, when the circuit breaker 100 is in the closed state, the power taking spring 51 contacts the power taking column 52, so that the circuit board 21 is connected to the leakage release 40 through the power taking mechanism 50, so that the circuit board 21 can supply power to the leakage release 40, ensuring that the leakage release 40 can work reliably; Figure 8 and Fig. 9 As shown, when the circuit breaker 100 is in the open state, the operating mechanism 30 abuts against the power-taking spring 51, driving the power-taking spring 51 to separate from the power-taking column 52, so that the circuit board 21 is disconnected from the leakage release 40, so that the circuit board 21 no longer supplies power to the leakage release 40, thereby reducing unnecessary losses and increasing the service life of the circuit breaker 100.

[0054] like Figure 7 , Fig. 9 and Fig.10As shown, the leakage release 40 includes a yoke 41, and a power-taking spring 51 is rotatably arranged in the housing 10. One end of the power-taking spring 51 is electrically connected to the yoke 41, and the other end is held against the operating mechanism 30 to store energy and has a tendency to rotate toward a side close to the power-taking post 52. Specifically, the power-taking spring 51 includes a spring body 511 and a third extension arm 514 and a fourth extension arm 515 arranged on the spring body 511. The spring body 511 is rotatably arranged in the housing 10, the third extension arm 514 is electrically connected to the yoke 41, and the fourth extension arm 515 extends toward a side close to the operating mechanism 30, so that the fourth extension arm 515 is located on the rotation path of the operating mechanism 30, and the power-taking post 52 is located on the rotation path of the fourth extension arm 515. In this embodiment, a first supporting portion 321 is provided on the handle 32, so that when the circuit breaker 100 is closed, the power supply spring 51 can be rotated until the fourth extension arm 515 contacts the power supply post 52, thereby connecting the power supply; when the circuit breaker 100 is opened, the power supply spring 51 can be rotated under the action of the handle 32 until the fourth extension arm 515 is separated from the power supply post 52, thereby disconnecting the power supply.

[0055] Third embodiment

[0056] Please refer to Fig.11 and Fig.12 The embodiment of the present application provides a circuit breaker 100, including a housing 10 and a circuit board 21 (not shown in the figure) disposed in the housing 10, a test button 60, a leakage release 40 and a power supply mechanism 50. The power supply mechanism 50 is used to draw power from the circuit board 21 and supply power to the leakage release 40. Different from the above-mentioned embodiment, the test button 60 is in contact with the power supply mechanism 50, and the test button 60 is used to drive the power supply mechanism 50 to contact or separate from the leakage release 40, so as to connect or disconnect the circuit board 21 with the leakage release 40. Among them, as Fig.11 and Fig.12 As shown, the power-taking mechanism 50 includes a power-taking spring 51 and a power-taking post 52. The power-taking spring 51 is rotatably arranged in the shell 10, and the power-taking post 52 is fixedly arranged on the circuit board 21. The power-taking spring 51 and the power-taking post 52 are always electrically connected. The test button 60 abuts against the power-taking spring 51. The test button 60 can be driven to drive the power-taking spring 51 to contact or separate from the leakage release 40.

[0057] Specifically, please follow Figure 11 to Figure 12Refer to the accompanying drawings in the order of, in the initial state, the power taking spring 51 is separated from the leakage release 40, and the test button 60 is pressed toward the side close to the leakage release 40, which can drive the power taking spring 51 to rotate relative to the housing 10, so that the side of the power taking spring 51 away from the test button 60 is in contact with the leakage release 40, so that the circuit board 21 is connected with the leakage release 40 through the power taking mechanism 50, and then the circuit board 21 can supply power to the leakage release 40, ensuring that the leakage release 40 can work reliably; please follow Figure 12 to Figure 11 Referring to the accompanying drawings, the test button 60 is reset toward the side away from the leakage release 40, which can drive the power-taking spring 51 to reverse relative to the housing 10, so that the side of the power-taking spring 51 away from the test button 60 is separated from the leakage release 40, thereby disconnecting the circuit board 21 from the leakage release 40, and then the circuit board 21 no longer supplies power to the leakage release 40, thereby reducing unnecessary losses and increasing the service life of the circuit breaker 100.

[0058] Please continue to refer to Fig.11 and Fig.12 The leakage release 40 includes a yoke 41, and a power-taking spring 51 is rotatably disposed in the housing 10. One end of the power-taking spring 51 abuts against the test button 60, and the other end is electrically connected to the power-taking post 52 and can be rotated toward a side close to the yoke 41 under the drive of the test button 60. Specifically, the power-taking spring 51 includes a spring body 511 and a fifth extension arm 516 and a sixth extension arm 517 disposed on the spring body 511. The spring body 511 is rotatably disposed in the housing 10, the fifth extension arm 516 abuts against the test button 60, and the sixth extension arm 517 is electrically connected to the power-taking post 52 and extends toward a side close to the yoke 41, so that the yoke 41 is located on the rotation path of the sixth extension arm 517. Therefore, when the test button 60 is pressed toward the side close to the leakage releaser 40, the power supply spring 51 can be driven to rotate relative to the shell 10 until the sixth extension arm 517 contacts the yoke 41, thereby connecting the power supply; when the test button 60 is reset toward the side away from the leakage releaser 40, the power supply spring 51 can be driven to reverse relative to the shell 10 until the sixth extension arm 517 separates from the yoke 41, thereby disconnecting the power supply.

[0059] 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.

[0060] 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 housing (10), a circuit board (21), an operating mechanism (30), a leakage release (40) and a power taking mechanism (50) arranged in the housing (10); the power taking mechanism (50) is used to take power from the circuit board (21) and supply power to the leakage release (40); when the circuit breaker (100) is closed, the power taking mechanism (50) contacts the leakage release (40) so that the circuit board (21) is connected to the leakage release (40) through the power taking mechanism (50); when the circuit breaker (100) is opened, the operating mechanism (30) contacts the power taking mechanism (50) to drive the power taking mechanism (50) to separate from the leakage release (40) so that the circuit board (21) is disconnected from the leakage release (40).

2. The circuit breaker according to claim 1, characterized in that: The leakage release (40) comprises a yoke (41), and the power taking mechanism (50) comprises a power taking spring (51), the power taking spring (51) is rotatably arranged in the housing (10), one end of the power taking spring (51) is electrically connected to the circuit board (21), and the other end abuts against the operating mechanism (30) to store energy and has a movement tendency to rotate toward a side close to the yoke (41).

3. The circuit breaker according to claim 2, characterized in that: The power-taking spring (51) comprises a spring body (511) and a first extension arm (512) and a second extension arm (513) arranged on the spring body (511); the spring body (511) is rotatably arranged in the shell (10); the first extension arm (512) is electrically connected to the circuit board (21); the second extension arm (513) extends toward a side close to the operating mechanism (30) so that the second extension arm (513) is located on the rotation path of the operating mechanism (30); and the yoke (41) is located on the rotation path of the second extension arm (513).

4. The circuit breaker according to claim 3, characterized in that: The power collection mechanism (50) further comprises a power collection post (52), wherein the power collection post (52) is fixedly arranged on the circuit board (21), and the first extension arm (512) has a hook-shaped connecting portion, wherein the hook-shaped connecting portion is hung on the power collection post (52).

5. The circuit breaker according to claim 3, characterized in that: The operating mechanism (30) comprises a handle (32) and a moving contact assembly (33); the handle (32) is rotatably disposed in the housing (10); the handle (32) is driven to move the moving contact assembly (33) so as to open or close the circuit breaker (100); a second abutting portion (331) is disposed on the moving contact assembly (33); and the second extension arm (513) is used to abut against the second abutting portion (331).

6. The circuit breaker according to claim 3, characterized in that: The magnetic yoke (41) comprises a magnetic yoke body (411) and a power taking portion (412) arranged on the magnetic yoke body (411); the power taking portion (412) is located on the rotation path of the second extension arm (513); the second extension arm (513) is in contact with the power taking portion (412) so that the power taking spring (51) is connected to the magnetic yoke (41).

7. The circuit breaker according to claim 6, characterized in that: The power extraction portion (412) extends in a direction perpendicular to the yoke body (411) toward a side away from the circuit board (21).

8. The circuit breaker according to claim 6, characterized in that: A limiting portion (413) is also provided at one end of the power taking portion (412) away from the yoke body (411); the yoke body (411), the power taking portion (412) and the limiting portion (413) together form a semi-enclosed structure to limit the second extension arm (513).

9. The circuit breaker according to claim 8, characterized in that The limiting portion (413) and the yoke body (411) are arranged in parallel and at intervals.

10. The circuit breaker according to claim 2, characterized in that: The housing (10) is provided with a mounting post (11), and the power taking spring (51) is sleeved on the mounting post (11) so that the power taking spring (51) is rotatably arranged in the housing (10).

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