A circuit breaker
The test button circuit device with a double-break structure formed by conductive components, actuating components, and a driving mechanism solves the problems of low assembly efficiency and high cost caused by complex structure in the prior art, and realizes efficient assembly and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG CHINT ELECTRIC CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-08-04
AI Technical Summary
The existing double-breakpoint test button device has a complex structure, resulting in low assembly efficiency and high production costs.
The test button circuit device, which uses conductive components, actuating components, moving contacts, and a driving mechanism to form a double-break structure, simplifies the structure and reduces the number of parts.
It improves assembly efficiency, reduces production costs, and ensures user safety.
Smart Images
Figure CN224595469U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of low-voltage electrical technology, and in particular to a circuit breaker. Background Technology
[0002] A residual current circuit breaker (RCCB) is a protective device used to detect residual current (leakage current) in a circuit and quickly disconnect the power supply when leakage occurs. RCCBs typically include a test button circuit, an important component of the circuit breaker, used to simulate leakage faults to verify the circuit breaker's proper operation. It actively generates a controllable residual current to test the effectiveness of the circuit breaker's protective function.
[0003] In existing technologies, test button devices are divided into single-break and double-break types. With a single-break structure, when the circuit breaker is in the open position and power is supplied to the incoming line, pressing the test button will induce a voltage at the outgoing line, posing a safety hazard of electric shock. The double-break structure addresses the induced voltage problem at the outgoing line by adding a break point linked to the circuit breaker mechanism, thus increasing safety.
[0004] However, the existing double-break structure test button device has a relatively complex structure and manufacturing process, which leads to low assembly efficiency and high manufacturing cost. Utility Model Content
[0005] This application provides a circuit breaker with an internal test button device having a double-break structure. The test button device has a simple structure, which can improve assembly efficiency and reduce production costs.
[0006] This application provides a circuit breaker, including a mounting bracket, a conductive element, an actuating element, a moving contact, and a driving mechanism. The mounting bracket has a first terminal and a second terminal. The conductive element includes a first elastic portion, a second elastic portion, and a connecting portion disposed between the first and second elastic portions, the connecting portion being connected to the mounting bracket. The actuating element is disposed on the mounting bracket and is used to drive the first elastic portion to move, causing the first elastic portion to contact or separate from the first terminal. The moving contact is made of a conductive material, with a first end and a second end, and is movable relative to the mounting bracket between a first position and a second position. The driving mechanism is disposed on the mounting bracket and is used to drive the moving contact to move. When the moving contact rotates to the first position, the first end of the moving contact contacts the second elastic portion, and the second end of the moving contact contacts the second terminal. When the moving contact rotates to the second position, the first end of the moving contact separates from the second elastic portion, and the second end of the moving contact separates from the second terminal.
[0007] In some implementations of this application, the conductive element is a torsion spring, which includes a spring coil located in the middle and torsion arms located on both sides. The spring coil is a connecting part, and the two torsion arms are a first elastic part and a second elastic part, respectively.
[0008] In some implementations of this application, the first elastic part and the second elastic part are elastic metal sheets.
[0009] In some implementations of this application, the drive mechanism includes an operating mechanism, a connecting rod, and a tension spring. The operating mechanism is mounted on a mounting frame and can switch between a closed state and an open state. One end of the connecting rod is hinged to the operating mechanism, and the other end of the connecting rod is hinged to the moving contact. The connecting rod is used to transmit power between the operating mechanism and the moving contact. The tension spring and the second terminal are located on the same side of the moving contact. One end of the tension spring is connected to the mounting frame, and the other end of the tension spring is connected to the moving contact. When the moving contact rotates from the second position to the first position, the elastic deformation of the tension spring increases; when the moving contact rotates from the first position to the second position, the elastic deformation of the tension spring decreases. When the operating mechanism switches to the closed state, the moving contact rotates to the first position; when the operating mechanism switches to the open state, the moving contact rotates to the second position.
[0010] In some implementations of this application, the operating mechanism is a linkage mechanism.
[0011] In some implementations of this application, the moving contact is provided with a limiting hole, and the mounting bracket is provided with a limiting post. The limiting post is inserted into the limiting hole, and the area of the limiting hole is larger than the cross-sectional area of the limiting post. When the moving contact is in the second position, the limiting post is in contact with the hole wall of the limiting hole.
[0012] In some implementations of this application, the drive mechanism includes a first gear and a second gear. The first gear has a handle, and the second gear is connected to a moving contact. The first gear meshes with the second gear, or at least one third gear is provided between the first and second gears, the third gear being used to transmit power between the first and second gears.
[0013] In some implementations of this application, the trigger is a button with an internal reset spring. The reset spring is used to move the button away from the first elastic part so that the first elastic part is separated from the first terminal.
[0014] In some implementations of this application, a first terminal block and a second terminal block are also included, wherein the first terminal block is directly or indirectly electrically connected to the first terminal, and the second terminal block is directly or indirectly electrically connected to the moving contact.
[0015] In some implementations of this application, a resistor is also included, disposed between the first terminal block and the first terminal. The resistor has pins at both ends, one of which is electrically connected to the first terminal block and the other is the first terminal.
[0016] Compared with the prior art, this utility model has the following beneficial effects:
[0017] The circuit breaker provided in this application embodiment can form a test button circuit device with a double-break structure by simply setting conductive parts, actuating parts, moving contacts and driving mechanisms. Its structure is simple and ingenious, with fewer parts, thereby improving assembly efficiency and reducing production costs while ensuring user safety. Attached Figure Description
[0018] Figure 1 A schematic diagram of the circuit breaker in the closed state according to Embodiment 1 of this application is shown;
[0019] Figure 2 A schematic diagram of the circuit breaker in the open state according to Embodiment 1 of this application is shown;
[0020] Figure 3 A schematic diagram of the conductive component in Embodiment 1 of this application is shown;
[0021] Figure 4 A simplified structural diagram of the operating mechanism in Embodiment 1 of this application is shown;
[0022] Figure 5 A schematic diagram of the trigger element in Embodiment 1 of this application is shown;
[0023] Figure 6 A top view of the external structure of the circuit breaker according to Embodiment 1 of this application is shown;
[0024] Figure 7 A schematic diagram of the conductive component in Embodiment 2 of this application is shown;
[0025] Figure 8 A schematic diagram of the drive mechanism in Embodiment 3 of this application is shown.
[0026] Figure label:
[0027] 1. Mounting bracket, 11. First terminal, 12. Second terminal, 13. First column, 14. Second column, 15. Limiting post, 16. Boss, 2. Conductive component, 21. First elastic part, 22. Second elastic part, 23. Connecting part, 3. Actuating component, 31. Slot, 4. Moving contact, 41. First end, 42. Second end, 43. Limiting hole, 5. Operating mechanism, 51. Handle, 52. First connecting rod, 53. Second connecting rod, 54. Third connecting rod, 6. Connecting rod, 7. Tension spring, 8. Gear set, 81. First gear, 82. Second gear, 83. Third gear, 9. Stationary contact, 10. First terminal block, 20. Second terminal block, 30. Resistor, 301. First pin, 302. Second pin. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0029] This application provides a circuit breaker with a built-in test button circuit device. When the circuit is open, the test button circuit device actively generates a controllable residual current to simulate a leakage fault, thereby verifying that the circuit breaker trips within a specified time and testing the effectiveness of its protection function. The test button circuit device in the circuit breaker provided in this application has a double-break structure and is simple in design. It not only ensures user safety but also has the advantage of low manufacturing cost. The circuit breaker provided in this application is described below with reference to several embodiments and accompanying drawings.
[0030] Example 1
[0031] Figure 1 This diagram illustrates the circuit breaker provided in this embodiment in the test button circuit conduction state. Figure 2 A schematic diagram of the circuit breaker provided in this embodiment in the test button circuit open state is shown.
[0032] refer to Figure 1 and Figure 2 The circuit breaker provided in this application includes a test button circuit device. Specifically, the test button circuit device includes a mounting bracket 1, a conductive element 2, an actuating element 3, a moving contact 4, and a driving mechanism. The mounting bracket 1 is provided with a first terminal 11 and a second terminal 12. The first terminal 11 is directly or indirectly electrically connected to the terminal block on the circuit breaker, and the second terminal 12 can be electrically connected to the terminal block on the circuit breaker when the test button circuit is in the conducting state.
[0033] The conductive element 2 includes a first elastic portion 21, a second elastic portion 22, and a connecting portion 23 disposed between the first elastic portion 21 and the second elastic portion 22. The connecting portion 23 is connected to the mounting bracket 1. Exemplarily, both the first elastic portion 21 and the second elastic portion 22 are strip-shaped. The first elastic portion 21 extends along... Figure 2 Extending in the X direction, the second elastic part 22 along Figure 2 It extends in the Y direction.
[0034] The actuating element 3 is mounted on the mounting bracket 1. The actuating element 3 drives the first elastic part 21 to move, causing the first elastic part 21 to contact or separate from the first terminal 11. Specifically, when the actuating element 3 moves towards the side closer to the first elastic part 21, the actuating element 3 applies pressure to the first elastic part 21, causing the first elastic part 21 to undergo elastic deformation and press against the first terminal 11. At this time, the first elastic part 21 is connected to the first terminal 11, such as... Figure 1 As shown. When the actuating element 3 moves away from the first elastic part 21, the pressure applied by the actuating element 3 to the first elastic part 21 decreases, the first elastic part 21 recovers its elastic deformation and separates from the first terminal 11, thereby forming the first break point of the test button circuit, as shown. Figure 2 As shown.
[0035] The moving contact 4 is made of a conductive material, and its two ends are a first end 41 and a second end 42, respectively. The moving contact 4 can move relative to the mounting bracket 1 between a first position and a second position. This application does not limit the movement trajectory of the moving contact 4, which can be one or more combinations of rotation, linear motion, and curvilinear motion. A drive mechanism is provided on the mounting bracket 1, and the drive mechanism is used to drive the moving contact 4 to move.
[0036] When the moving contact 4 rotates to the first position, as Figure 1 As shown, the first end 41 of the moving contact 4 is in contact with the second elastic part 22 and conducts electricity, while the second end 42 of the moving contact 4 is in contact with the second terminal 12 and conducts electricity. When the moving contact 4 rotates to the second position, the first end 41 of the moving contact 4 separates from the second elastic part 22 to form the second break point of the test button circuit, and at the same time, the second end 42 of the moving contact 4 also separates from the second terminal 12.
[0037] The test button circuit provided in this application embodiment can only conduct when both the first breakpoint and the second breakpoint are connected. If at least one of the first breakpoint and the second breakpoint in the test button circuit is disconnected, the test button circuit cannot conduct.
[0038] When the test button circuit needs to be activated, the operator first operates the drive mechanism, causing the moving contact 4 to move to the first position. At this time, the first end 41 of the moving contact 4 contacts and conducts with the second elastic part 22, while the second end 42 of the moving contact 4 contacts and conducts with the second terminal 12. Then, the operator operates the actuating element 3 to move closer to the first elastic part 21, pressing the first elastic part 21 so that it contacts and conducts with the first terminal 11. At this point, the test button circuit is in a conductive state, capable of generating simulated leakage current, causing the circuit breaker to trip.
[0039] The circuit breaker provided in this application embodiment can form a test button circuit device with a double-break structure (i.e., with the first break and the second break mentioned above) by simply setting a conductive element 2, an actuating element 3, a moving contact 4 and a driving mechanism. Its structure is simple and ingenious, and contains fewer parts, thereby improving assembly efficiency and reducing production costs while ensuring user safety.
[0040] refer to Figure 3In this embodiment, the conductive element 2 is a torsion spring, which includes a spring coil in the middle and torsion arms on both sides. The spring coil is the connecting part 23, and the two torsion arms are the first elastic part 21 and the second elastic part 22, respectively. Exemplarily, the torsion spring can be made of copper.
[0041] Combined Figure 1 and Figure 2 The mounting bracket 1 is provided with a first column 13, and the spring coil of the torsion spring is sleeved on the first column 13 so that the torsion spring is connected to the mounting bracket 1.
[0042] In this embodiment, the drive mechanism includes an operating mechanism 5, a connecting rod 6, and a tension spring 7. The mounting frame 1 is a plate, and the operating mechanism 5 is connected to the mounting frame 1. Most of the structure in the operating mechanism 5 is hidden behind the mounting frame 1, therefore... Figure 1 and Figure 2 The overall structure of the operating mechanism 5 is not shown. The operating mechanism 5 is equipped with a handle 51, which can be used to switch the operating mechanism 5 between the closed and open states.
[0043] One end of the connecting rod 6 is hinged to the operating mechanism 5, and the other end of the connecting rod 6 is hinged to the moving contact 4. The connecting rod 6 is used to transmit power between the operating mechanism 5 and the moving contact 4. When the operating mechanism 5 switches between the closed state and the open state, the operating mechanism 5 can drive the moving contact 4 to move through the connecting rod 6.
[0044] The tension spring 7 and the second terminal 12 are located on the same side of the moving contact 4. For example, as shown... Figure 1 and Figure 2 As shown, the tension spring 7 and the second terminal 12 are both located on the left side of the moving contact 4. A second column 14 is provided on the mounting bracket 1, and one end of the tension spring 7 is hooked to the second column 14 to connect it to the mounting bracket 1. The other end of the tension spring 7 is connected to the moving contact 4. The tension spring 7 provides tension to the moving contact 4. When the moving contact 4 rotates from the second position to the first position (i.e., along...),... Figure 1 and Figure 2 When the spring 7 rotates clockwise, its elastic deformation increases, and the tension provided by the spring 7 to the moving contact 4 also increases. When the moving contact 4 rotates from the first position to the second position (i.e., along the clockwise direction), its elastic deformation increases, and the tension provided by the spring 7 to the moving contact 4 also increases. Figure 1 When the spring rotates counterclockwise, the elastic deformation of the tension spring 7 decreases, and the tension provided by the tension spring 7 to the moving contact 4 also decreases.
[0045] Furthermore, the operating mechanism 5 is a linkage mechanism. Figure 4 A simplified structural diagram of the operating mechanism 5 is shown. (Reference) Figure 4The operating mechanism 5 includes a first link 52, a second link 53, and a third link 54. The first end of the first link 52 is hinged to the mounting bracket 1, and the second end of the first link 52 is hinged to the first end of the second link 53. The second end of the second link 53 is hinged to the first end of the third link 54, the middle part of the third link 54 is hinged to the mounting bracket 1, and the second end of the third link 54 is hinged to a link 6. A handle 51 is connected to the first link 52. By operating the handle 51, the operator can rotate the first link 52, thereby driving the entire linkage mechanism. When the operating mechanism 5 is switched to the closed state, the moving contact 4 rotates to the first position, such as... Figure 1 As shown. When the operating mechanism 5 switches to the open state, the moving contact 4 rotates to the second position, as shown. Figure 2 As shown.
[0046] Specifically, when the operating mechanism 5 switches from the open state to the closed state, the operating mechanism 5 applies an directional force to the first end 41 of the moving contact 4 via the connecting rod 6. Figure 2 The force acting from the lower right side, in conjunction with the tension force of the tension spring 7 on the moving contact 4, together drives the moving contact 4 along... Figure 2 Rotate clockwise until the moving contact 4 moves to Figure 1 The first position is shown in the figure. When the moving contact 4 moves to the first position, the tension force of the tension spring 7 on the moving contact 4 can make the second end 42 of the moving contact 4 fit tightly with the second terminal 12, thereby enhancing the reliability of the device's conductivity.
[0047] When the operating mechanism 5 switches from the closed state to the open state, the operating mechanism 5 applies an directional force to the first end 41 of the moving contact 4 via the connecting rod 6. Figure 1 The force acting from the upper left, combined with the tension of the spring 7 on the moving contact 4, together drives the moving contact 4 along... Figure 1 Rotate counterclockwise until the moving contact 4 moves to Figure 2 The second position is shown in the figure. At this time, the first end 41 of the moving contact 4 is separated from the second elastic part 22 to form a second break. Even if the operator presses the actuating member 3 to make the first elastic part 21 contact the first terminal 11, the entire test button circuit will not be connected.
[0048] Furthermore, since the elastic deformation of the tension spring 7 is greatest when the moving contact 4 is in the first position, the tension spring 7 can provide a large reset force to the moving contact 4 when the moving contact 4 moves from the first position to the second position, thereby facilitating the switching of the operating mechanism 5 from the closed state to the open state.
[0049] Furthermore, in this application, the movement of the moving contact 4 is primarily rotational. Simultaneously with rotation, the moving contact 4 also experiences a slight movement relative to the mounting bracket 1. The moving contact 4 is provided with a limiting hole 43, and the mounting bracket 1 is provided with a limiting post 15, which is inserted into the limiting hole 43. The area of the limiting hole 43 is larger than the cross-sectional area of the limiting post 15, allowing the limiting post 15 to move within the limiting hole 43. When the limiting post 15 contacts the inner wall of the limiting hole 43, it effectively limits the movement of the moving contact 4.
[0050] In this embodiment, when the moving contact 4 is in the second position, the limiting post 15 contacts the wall of the limiting hole 43. At this time, the moving contact 4 is simultaneously subjected to forces from the connecting rod 6, the tension spring 7, and the limiting post 15, thus maintaining force balance. Figure 2 As shown. When the moving contact 4 is in the first position, the limiting post 15 may or may not contact the wall of the limiting hole 43. When the limiting post 15 does not contact the wall of the limiting hole 43, as... Figure 1 As shown, the moving contact 4 is simultaneously subjected to forces from three aspects: the connecting rod 6, the tension spring 7, and the second terminal 12, which can maintain force balance.
[0051] Furthermore, the trigger 3 is a button. When it is necessary to activate the first breakpoint, the operator moves towards... Figure 2 Pressing the button below moves it closer to the first elastic part 21, pressing the bottom of the button against the first elastic part 21, causing it to elastically deform until it presses against the first terminal 11, thus establishing contact and conductivity. After the test, the operator simply needs to release the pressure on the trigger 3. The first elastic part 21 will then recover its elastic deformation after the pressure is removed, separating it from the first terminal 11. Simultaneously, this will cause the button to move upwards, resetting it to its original position.
[0052] For example, the button has a return spring inside. When the operator presses the button down, the return spring undergoes a compressed elastic deformation. When the operator releases the pressure on the actuating element 3, the return spring returns to its elastic deformation, thereby moving the button upward to increase the button's return force.
[0053] Further reference Figure 5 The trigger 3 is provided with a slot 31 below it, and the first elastic part 21 is inserted into the slot 31, thereby enhancing the connection stability between the trigger 3 and the first elastic part 21.
[0054] Furthermore, Figure 6 A top view of the circuit breaker provided in this application. (Reference) Figure 6The circuit breaker provided in this application further includes a first terminal block 10 and a second terminal block 20. Exemplarily, the first terminal block 10 can be a C-phase terminal block, and the second terminal block 20 can be an N-phase terminal block. The first terminal block 10 is electrically connected to the first terminal 11, and the second terminal block 20 is electrically connected to the moving contact 4 via a wire. When the second end 42 of the moving contact 4 contacts the second terminal 12, the second terminal block 20 is electrically connected to the second terminal 12 via a wire and the second end 42.
[0055] Furthermore, combined Figure 1 and Figure 2 The circuit breaker provided in this application also includes a resistor 30. Exemplarily, the resistor 30 can be a carbon film resistor. The resistor 30 is disposed on the mounting bracket 1 and located between the first terminal block 10 and the first terminal 11. The two ends of the resistor 30 are respectively provided with a first pin 301 and a second pin 302. The first pin 301 is connected to the terminal block of the first terminal block 10 via a wire, and the second pin 302 is fixedly connected to the boss 16 of the mounting bracket 1, serving as the first terminal 11.
[0056] Furthermore, the circuit breaker provided in this application also includes a stationary contact 9. The stationary contact 9 is fixedly connected to the mounting bracket 1, and the side wall of the stationary contact 9 is the second terminal 12. When the moving contact 4 is in the first position, the stationary contact 9 is electrically connected to the terminal block of the second terminal block 20 through the moving contact 4 and the wire.
[0057] The test button circuit device in this embodiment contains only one torsion spring (i.e., conductive element 2), which has a simple and reliable structure, is easy to install, and has low cost.
[0058] Example 2
[0059] The difference between Embodiment 2 and Embodiment 1 lies in the structure of the conductive element 2, while the rest of the structure is the same (i.e., the structures of the mounting bracket 1, the actuating element 3, the moving contact 4, and the driving mechanism are the same).
[0060] refer to Figure 7 In this embodiment, the first elastic portion 21 and the second elastic portion 22 in the conductive member 2 are elastic metal sheets. Both metal sheets are strip-shaped. One end of each metal sheet is fixedly connected to the connecting portion 23 of the conductive member 2. One metal sheet extends towards the side where the first terminal 11 is located and engages with the slot 31 below the actuating member 3. The other metal sheet extends towards the side where the moving contact 4 is located.
[0061] In this embodiment, the shape of the connecting portion 23 is not limited; it can be sheet-like or block-like. For example, the first elastic portion 21, the second elastic portion 22, and the connecting portion 23 are all made of copper.
[0062] This embodiment does not limit the specific connection structure between the connecting part 23 and the mounting bracket 1. Exemplarily, the connecting part 23 can be detachably connected to the mounting bracket 1 by bolts, or it can be welded to the mounting bracket 1.
[0063] Example 3
[0064] The difference between Embodiment 3 and Embodiments 1 and 2 lies in the structure of the driving mechanism. The structure of the conductive element 2 in Embodiment 3 can be the same as that in Embodiment 1 or Embodiment 2, and this application does not specifically limit it. The remaining structures of Embodiment 3 are the same as those in Embodiments 1 and 2 (i.e., the structures of the mounting bracket 1, the actuating element 3, and the moving contact 4 are the same).
[0065] refer to Figure 8 In this embodiment, the driving mechanism is a gear set 8. The gear set 8 includes a first gear 81 and a second gear 82. The first gear 81 is provided with a handle 51, and the second gear 82 is connected to the moving contact 4. The first gear 81 can directly mesh with the second gear 82; or, at least one third gear 83 is provided between the first gear 81 and the second gear 82, and the third gear 83 is used to transmit power between the first gear 81 and the second gear 82.
[0066] When the operator pulls the handle 51, the handle 51 drives the first gear 81 to rotate. The first gear 81 directly or indirectly drives the second gear 82 to rotate, so that the moving contact 4 can rotate together with the second gear 82, thereby driving the moving contact 4 to rotate between the first position and the second position.
[0067] The above embodiments are a further detailed description of the circuit breaker, and it should not be assumed that the specific implementation of the circuit breaker is limited to these descriptions. All equivalent implementations or modifications that do not depart from the scope of this application should be included within the scope of this application.
[0068] In summary, in this application, when it is necessary to connect the test button circuit, the operator first operates the drive mechanism to move the moving contact 4 to the first position. At this time, the first end 41 of the moving contact 4 contacts and conducts with the second elastic part 22, and simultaneously the second end 42 of the moving contact 4 contacts and conducts with the second terminal 12. Then, the operator operates the actuating element 3 to move closer to the first elastic part 21, pressing the first elastic part 21 so that it contacts and conducts with the first terminal 11. At this time, the test button circuit is in a conducting state, thus simulating a leakage fault to verify whether the circuit breaker can operate normally.
[0069] This application, by setting a conductive element 2, an actuating element 3, a moving contact 4, and a driving mechanism, can form a test button circuit device with a double-break structure by adding only one additional conductive element 2. Its structure is simple and ingenious, containing fewer parts, thereby improving assembly efficiency and reducing production costs while ensuring user safety.
[0070] The specific embodiments described above illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details have been omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0071] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.
[0072] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0073] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.
[0074] In the description of this application, it should be noted that the terms "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0075] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fit" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0076] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A circuit breaker characterized by, include: Mounting bracket, wherein the mounting bracket is provided with a first terminal and a second terminal; A conductive component includes a first elastic portion, a second elastic portion, and a connecting portion disposed between the first elastic portion and the second elastic portion, wherein the connecting portion is connected to the mounting bracket. An actuating element is disposed on the mounting bracket. The actuating element is used to drive the first elastic part to move so that the first elastic part contacts or separates from the first terminal. A movable contact, wherein the two ends of the movable contact are a first end and a second end, and the movable contact is movable relative to the mounting bracket between a first position and a second position; A driving mechanism is provided on the mounting bracket. The driving mechanism is used to drive the moving contact to move. When the moving contact rotates to the first position, the first end of the moving contact contacts the second elastic part, and the second end of the moving contact contacts the second terminal. When the moving contact rotates to the second position, the first end of the moving contact separates from the second elastic part, and the second end of the moving contact separates from the second terminal.
2. The circuit breaker of claim 1, wherein, The conductive component is a torsion spring, which includes a spring coil in the middle and torsion arms on both sides. The spring coil is the connecting part, and the two torsion arms are the first elastic part and the second elastic part, respectively.
3. The circuit breaker of claim 1, wherein, The first elastic part and the second elastic part are metal sheets with elasticity.
4. The circuit breaker of claim 1, wherein, The drive mechanism includes: An operating mechanism is mounted on the mounting frame, and the operating mechanism can switch between the closed state and the open state. A connecting rod, one end of which is hinged to the operating mechanism and the other end of which is hinged to the moving contact, the connecting rod being used to transmit power between the operating mechanism and the moving contact; When the operating mechanism is switched to the closing state, the moving contact rotates to the first position; when the operating mechanism is switched to the opening state, the moving contact rotates to the second position.
5. The circuit breaker of claim 4, wherein, The driving mechanism also includes a tension spring, which is located on the same side of the moving contact as the second terminal. One end of the tension spring is connected to the mounting bracket, and the other end of the tension spring is connected to the moving contact. When the moving contact rotates from the second position to the first position, the elastic deformation of the tension spring increases; when the moving contact rotates from the first position to the second position, the elastic deformation of the tension spring decreases.
6. The circuit breaker of claim 4, wherein, The operating mechanism is a linkage mechanism.
7. The circuit breaker of claim 4, wherein, The moving contact is provided with a limiting hole, and the mounting bracket is provided with a limiting post. The limiting post is inserted into the limiting hole, and the area of the limiting hole is larger than the cross-sectional area of the limiting post. When the moving contact is in the second position, the limiting post is in contact with the wall of the limiting hole.
8. The circuit breaker of claim 1, wherein, The drive mechanism includes: A first gear, on which a handle is provided; The second gear is connected to the moving contact; The first gear meshes with the second gear, or at least one third gear is provided between the first gear and the second gear, the third gear being used to transmit power between the first gear and the second gear.
9. The circuit breaker of claim 1, wherein, The trigger is a button with a reset spring inside. The reset spring is used to move the button away from the first elastic part so that the first elastic part is separated from the first terminal.
10. The circuit breaker of any one of claims 1 to 9, wherein, It also includes a first terminal block and a second terminal block, wherein the first terminal block is directly or indirectly electrically connected to the first terminal, and the second terminal block is directly or indirectly electrically connected to the moving contact.
11. The circuit breaker of claim 10, wherein, It also includes a resistor disposed between the first terminal block and the first terminal. The resistor has pins at both ends, one of which is electrically connected to the first terminal block and the other of which is the first terminal.