Electrically operated mechanism and circuit breaker
By combining a drive motor and a detection element, the circuit breaker's open and closed states can be accurately detected, solving the problems of high production cost and low detection accuracy, and improving the detection accuracy and reliability of the circuit breaker.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAMEN HONGFA AUTOMOTIVE ELECTRONICS CO LTD
- Filing Date
- 2026-05-08
- Publication Date
- 2026-07-31
AI Technical Summary
Existing circuit breakers have high production costs and low accuracy in detecting opening and closing status.
The circuit breaker employs a combination structure consisting of a drive motor, a transmission assembly, and first and second detection elements. By switching the forward and reverse rotation of the drive motor in conjunction with the signals from the first and second detection elements, it achieves accurate detection of the circuit breaker's open and closed states and its origin position.
This reduces the production cost of circuit breakers and improves the detection accuracy and reliability of open and closed states.
Smart Images
Figure CN122494512A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of circuit breaker technology, and in particular to an electric operating mechanism and a circuit breaker. Background Technology
[0002] In a circuit breaker, the electric operating mechanism can switch between three positions: home, closed, and open, allowing the circuit breaker to switch between open and closed states. To detect the open and closed states of the circuit breaker, the electric operating mechanism typically uses multiple microswitches. One microswitch detects the rotation position of the handle within the electric operating mechanism, thus detecting the open and closed states. The remaining microswitches detect the home, closed, and open positions of the electric operating mechanism. The electric operating mechanism typically uses at least four microswitches, resulting in high production costs for the circuit breaker. Furthermore, in related technologies, detecting the handle position using microswitches cannot detect the open and closed states at the circuit breaker contacts, leading to low detection accuracy. Summary of the Invention
[0003] Therefore, it is necessary to provide an electric operating mechanism and circuit breaker, which reduces the production cost of the circuit breaker and improves the detection accuracy of the circuit breaker's opening and closing status.
[0004] This application provides an electrically operated mechanism, including:
[0005] The drive motor has an output terminal capable of forward and reverse rotation;
[0006] A transmission assembly, wherein the input end of the transmission assembly is connected to the output end of the drive motor, the output end of the transmission assembly has a drive handle, and the output end of the transmission assembly is also used for transmission connection with the moving contact assembly. Under the drive of the drive motor, the drive handle can rotate around a first axis, and the transmission assembly enables the moving contact assembly to rotate around a second axis.
[0007] The first detection element is located on the rotation path of the drive handle and is used to detect the rotation position of the drive handle;
[0008] The tripping element is rotatable about a third axis and is used for transmission connection with the moving contact assembly, wherein the first axis, the second axis, and the third axis are parallel to each other;
[0009] The second detection element is located on the rotation path of the tripping component. The second detection element is used to detect the on / off state of the moving contact and the stationary contact.
[0010] The drive motor is activated to switch the first detection element between a signal-on and signal-off state, and / or to switch the second detection element between a signal-on and signal-off state.
[0011] In one embodiment, the drive motor rotates forward, and the first detection element switches from a no-signal state to a signal-on state, so that the electric operating mechanism is at the origin position.
[0012] In one embodiment, when the motor rotates forward, the first detection element switches from a signal-on state to a signalless state and then back to a signal-on state, while the second detection element switches from a signalless state to a signal-on state, so that the circuit breaker can be closed.
[0013] In one embodiment, when the drive motor rotates forward, the first detection element switches from a signal-on state to a signal-off state, and the second detection element switches from a signal-on state to a signal-off state. When the drive motor rotates in reverse, the first detection element switches from a signal-off state to a signal-on state, so that the circuit breaker can be tripped.
[0014] In one embodiment, when the drive motor rotates forward, the first detection element switches from a signal-on state to a signal-off state, so that the circuit breaker can be forced to open.
[0015] In one embodiment, when the drive motor reverses, the first detection element switches from a no-signal state to a signal-on state, so that the circuit breaker is released from forced tripping.
[0016] In one embodiment, a circuit control board is also included, on which the first detection element and the second detection element are disposed, and the circuit control board is electrically connected to the drive motor.
[0017] In one embodiment, the output end of the drive motor is provided with a worm gear, and the transmission assembly includes a first gear, a second gear, a third gear, and a linkage that mesh and transmit power in sequence. The first gear meshes and transmits power with the worm gear, the third gear is coaxially provided with the drive handle, the linkage can rotate around a fourth axis, the fourth axis is parallel to the third axis, and the linkage is connected to the moving contact assembly.
[0018] In one embodiment, the tripping component includes a rotating part, a first rod, and a second rod. The rotating part has the third axis. The first rod is fixedly connected to the rotating part, and a limit hole is formed on the first rod. The moving contact assembly is provided with a limit post inserted into the limit hole. The second rod is fixedly connected to the rotating part and is capable of rotating around the third axis to approach or move away from the detection end of the second detection element.
[0019] Secondly, this application also provides a circuit breaker, including a housing and an electric operating mechanism as described in any of the first aspects, wherein the drive motor, the transmission assembly, the first detection element, the tripping element, and the second detection element are all located within the housing.
[0020] In the aforementioned electric operating mechanism, the first detection element is located on the rotation path of the drive handle and can switch between a signal-on and signal-off state to detect the rotational position of the drive handle. The second detection element is located on the rotation path of the tripping element and can also switch between a signal-on and signal-off state. The second detection element is used to detect the on / off state of the moving contact and the stationary contact. By using the forward or reverse rotation of the drive motor and the two detection elements, the opening and closing states of the circuit breaker, as well as the origin, closing, and opening positions of the electric operating mechanism, can be detected, reducing the production cost of the circuit breaker. Simultaneously, by using the first detection element to detect the position of the drive handle and cooperating with the second detection element to directly detect the on / off state of the moving and stationary contacts, multiple detections of the circuit breaker position are achieved. This allows for accurate judgment of the opening and closing states of the circuit breaker, improving the detection accuracy and reliability of the circuit breaker's opening and closing states. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the electric operating mechanism in one embodiment of this application.
[0022] Figure 2 This is a front view of the electric operating mechanism in one embodiment of this application.
[0023] Figure 3 This is a structural schematic diagram of the electric operating mechanism from another perspective in one embodiment of this application.
[0024] Figure 4 This is a schematic diagram of the structure of the electric operating mechanism in another embodiment of this application.
[0025] Figure 5 This is an exploded view of the components of a circuit breaker in one embodiment of this application.
[0026] Figure 6 This is a reference diagram showing the process of the electric operating mechanism returning to its original position in one embodiment of this application.
[0027] Figure 7 This is a reference diagram showing the process of switching the circuit breaker to the closed state in one embodiment of this application.
[0028] Figure 8 This is a reference diagram showing the process of switching the circuit breaker to the open state in one embodiment of this application.
[0029] Figure 9 This is a reference diagram showing the process of switching the circuit breaker to the forced tripping state in one embodiment of this application.
[0030] Figure 10 This is a reference diagram showing the process of releasing the circuit breaker from the forced tripping state in one embodiment of this application.
[0031] The attached figures are labeled as follows:
[0032] 1. Housing; 2. Drive motor; 21. Worm gear; 3. Transmission assembly; 31. First gear; 32. Second gear; 33. Third gear; 331. Drive gear; 34. Drive handle; 35. Linkage component; 351. Driven gear; 4. First detection element; 5. Moving contact assembly; 51. Limiting post; 6. Tripping component; 61. Rotating part; 62. First rod body; 621. Limiting hole; 63. Second rod body; 7. Second detection element; 8. Circuit control board. Detailed Implementation
[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.
[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0039] See Figure 1 , Figure 2 and Figure 3 An embodiment of this application provides an electric operating mechanism including a drive motor 2, a transmission assembly 3, a first detection element 4, a tripping element 6, and a second detection element 7. The drive motor 2 serves as the power source for the electric operating mechanism, driving the transmission assembly 3 and the tripping element 6, and has an output end capable of forward and reverse rotation. The input end of the transmission assembly 3 is connected to the output end of the drive motor 2, and the output end of the transmission assembly 3 has a drive handle 34. The output end of the transmission assembly 3 is also used for transmission connection with a moving contact assembly 5. Under the drive of the drive motor, the drive handle 34 can rotate around a first axis, and the transmission assembly 3 enables the moving contact assembly 5 to rotate around a second axis. The transmission assembly 3 can drive the moving contact assembly 5 to rotate, thus achieving the on / off state of the moving and stationary contacts. The first detection element 4 is located on the rotation path of the drive handle 34 and is used to detect the rotation position of the drive handle 34.
[0040] To detect the on / off state of the moving and stationary contacts, in this application, the tripping element 6 is rotatable around a third axis. The tripping element 6 is used for transmission connection with the moving contact assembly 5. To simplify the structure, the first, second, and third axes are parallel to each other (the dotted lines in the figure correspond to the rotation axes of each component). When the moving contact assembly 5 rotates, the tripping element 6 rotates synchronously. Therefore, by detecting the position of the tripping element 6, the on / off state of the moving and stationary contacts can be detected. In this application, the second detection element 7 is located on the rotation path of the tripping element 6. The second detection element 7 is used to detect the on / off state of the moving and stationary contacts. Thus, when the circuit breaker closes and opens, not only the position of the drive handle 34 is detected, but also the on / off state of the moving and stationary contacts is detected, achieving multiple detections of the circuit breaker position. This allows for accurate judgment of the circuit breaker's opening and closing states, improving the detection accuracy of the circuit breaker's opening and closing states.
[0041] The drive motor 2 operates to switch the first detection element 4 between a signal-on and signal-off state, and / or to switch the second detection element 7 between a signal-on and signal-off state. It should be noted that the drive motor 2 rotates forward or reverse, driving the drive handle 34 to rotate via the transmission assembly 3. Since the first detection element 4 is located on the rotation path of the drive handle 34, it can detect the origin position, closed position, and open position of the operating mechanism. Simultaneously, the drive motor 2 rotates forward or reverse, causing the transmission assembly 3 to drive the moving contact assembly 5 and the tripping element 6 to rotate synchronously. Since the second detection element 7 is located on the rotation path of the tripping element 6, by detecting the position of the tripping element 6, the on / off state of the moving and stationary contacts can be detected. This allows for accurate judgment of the circuit breaker's open and closed states, reducing the production cost of the operating mechanism and improving the reliability of the circuit breaker's open and close detection.
[0042] It should be noted that in a circuit breaker, the moving contact and stationary contact are its core conductive components. During normal circuit operation, the moving and stationary contacts conduct current. In the event of a fault or when the circuit needs to be disconnected, the moving and stationary contacts quickly separate to interrupt the current. The stationary contact is generally fixedly installed inside the circuit breaker and is typically connected to a fixed conductor on the power supply side or load side. The moving contact is located in the moving contact assembly 5 and can move closer to or further away from the stationary contact as the drive motor 2 and transmission assembly 3 move, thus connecting and disconnecting the circuit. When the circuit breaker is in the closed position, the moving and stationary contacts are in close contact; when the circuit breaker is in the open position, they separate while maintaining a sufficient electrical clearance.
[0043] Furthermore, such as Figure 1 , Figure 2 and Figure 3As shown, to simplify the transmission structure of the transmission assembly 3, in one embodiment, a worm gear 21 is provided at the output end of the drive motor 2. The transmission assembly 3 includes a first gear 31, a second gear 32, a third gear 33, and a linkage 35 that mesh sequentially. The first gear 31 meshes with the worm gear 21, a drive handle 34 is coaxially mounted on the third gear 33, and the linkage 35 can rotate around a fourth axis parallel to the third axis. The linkage 35 is connected to the moving contact assembly 5. When the drive motor 2 operates, the worm gear 21 drives the first gear 31 to rotate, which in turn drives the second gear 32 to rotate, thereby causing the third gear 33 to rotate synchronously with the drive handle 34. To facilitate the operation of the moving contact assembly 5 by the transmission component 3, the linkage 35 meshes with the third gear 33, as shown in the figure. One end wall of the third gear 33 is axially provided with a driving tooth 331, and the linkage 35 is provided with a driven tooth 351 that meshes with the driving tooth 331. Therefore, when the third gear 33 rotates, it drives the linkage 35 to rotate synchronously, thereby driving the moving contact assembly 5 to rotate around the third axis, causing the moving contact to contact or separate from the stationary contact, thus enabling the circuit breaker to close or open. It should be noted that in this application, the linkage 35 and the moving contact assembly 5 are fixedly connected. It should also be noted that when the drive motor 2 is de-energized, a drive rod is inserted into the linkage 35 to manually rotate the drive handle 34, thereby achieving the circuit breaker's opening and closing operations and improving the safety of the circuit breaker during operation.
[0044] Furthermore, the first detection element 4 and the second detection element 7 have two signal states: signal present and no signal present. The first detection element 4 and the second detection element 7 can be either microswitches or Hall effect sensors, selected according to actual design requirements. Specifically, for example... Figure 6 As shown, the electric operating mechanism is switched from the power-off state (e.g.) Figure 6 (a) As shown, switch to the power-on state (e.g.) Figure 6 When (b) is shown, the original position is restored. Specifically, when the drive motor 2 rotates forward, it drives the transmission component 3 to move, which in turn drives the drive handle 34 to rotate (counterclockwise). The drive handle 34 enters the detection range of the first detection element 4, and the first detection element 4 switches from a no-signal state to a signal state. At this time, the third gear 33 is located at the original position.
[0045] Furthermore, such as Figure 7 As shown, when the circuit breaker needs to be closed, the initial position of the drive handle 34 is within the detection area of the first detection element 4 (e.g., Figure 7 (a) As shown. When the drive motor 2 rotates forward, it drives the transmission assembly 3 to move, which in turn drives the drive handle 34 to rotate (counterclockwise), so that the drive handle 34 moves out of the detection area of the first detection element 4 (as shown). Figure 7(b) shows that the drive motor 2 then continues to rotate. See reference. Figure 2 The third gear 33 faces away from the drive handle 34. The drive gear 331 meshes with the driven gear 351 on the linkage 35, causing the linkage 35 to rotate, which in turn drives the moving contact assembly 5 to rotate, so that the moving contact and the stationary contact make contact and achieve closing. Since the moving contact assembly 5 is provided with a limit post 51 that can be connected to the tripping element 6, the movement of the moving contact assembly 5 can drive the tripping element 6 to rotate and abut against the drive handle 34, and push the drive handle 34 back into the detection area of the first detection element 4. At the same time, the tripping element 6 contacts the second detection element 7 (e.g., Figure 7 (as shown in (c)), at this time, the first detection element 4 switches from a signal-on state to a signalless state and then back to a signal-on state. The second detection element 7 switches from a signalless state to a signal-on state, and the circuit breaker closes.
[0046] like Figure 8 As shown, when the circuit breaker needs to perform a tripping operation, the initial position of the drive handle 34 is located within the detection area of the first detection element 4 (e.g., Figure 8 (as shown in (a)). When the drive motor 2 rotates forward, it drives the transmission assembly 3 to move, which in turn drives the drive handle 34 to rotate (counterclockwise). The drive handle 34 pushes open the release piece 6 (the position of the release piece 6 is changed from...). Figure 8 (a) Switch to Figure 8 (b) Since the moving contact assembly 5 is equipped with a limiting post 51 that can drive the tripping element 6, the tripping element 6 can drive the moving contact assembly 5 to rotate, thereby separating the moving contact and the stationary contact and achieving circuit breaking. Simultaneously, the drive handle 34 moves out of the detection area of the first detection element 4 (e.g., ...). Figure 8 (b) As shown, at this time, the first detection element 4 switches from a signal-on state to a signalless state. During the process of the transmission assembly 3 driving the drive handle 34, the transmission assembly 3 synchronously drives the moving contact assembly 5 to rotate, so that the moving contact separates from the stationary contact. At this time, the tripping element 6 rotates synchronously, and the second detection element 7 switches from a signal-on state to a signalless state. Subsequently, when the drive motor reverses, it drives the transmission assembly 3 to rotate, thereby driving the drive handle 34 to rotate (clockwise), so that the drive handle 34 re-enters the detection area of the first detection element 4 (e.g., ...). Figure 8 (c) As shown, the first detection element 4 switches from a no-signal state to a signal-on state, and detects that the circuit breaker is in the open state.
[0047] Furthermore, once a circuit breaker is connected to the power system, to ensure the safe operation of the system and facilitate subsequent inspection and maintenance, especially in the event of a serious power system fault (such as a short circuit, overload, arc fault, fire, or explosion), failure to promptly disconnect the power supply could lead to equipment damage, personal injury, or even a wider system paralysis. Therefore, circuit breakers need to possess the capability to remotely or automatically force trip in emergency situations to improve the safety and controllability of the power system. In this application, if... Figure 9 As shown, under normal operating conditions of the circuit breaker, the drive handle 34 is within the detection range of the first detection element 4 (e.g., Figure 9 (a) As shown, the first detection element 4 outputs a signal, indicating that the circuit breaker is in a ready-to-close or closed-state. It should be noted that when the first detection element 4 outputs a signal, the second detection element 7 may be in a signal (closed) or no signal (open) state. If the second detection element 7 is in a signal state, the circuit breaker's operation process can be referred to Figure 8 If the second detection element 7 is in a no-signal state, the drive motor 2 will activate to rotate the drive handle 34 counterclockwise. Figure 9 (b) Position: Driven by the linkage 35, the moving contact assembly 5 rotates to separate the moving contact and the stationary contact, thus achieving tripping. At this time, the tripping member 6 is acted upon by the limit post 51 on the moving contact assembly 5, preventing the tripping member 6 from rotating counterclockwise to the desired position. Figure 8 (a) Position, thereby forming a forced trip. In this application, as Figure 9 As shown, when the circuit breaker needs to be forcibly tripped, the drive motor 2 rotates forward, driving the transmission assembly 3 to move, and the drive handle 34 is driven and gradually moves out of the detection range of the first detection element 4 (e.g., Figure 9 (b) As shown, when the drive handle 34 is completely removed from the detection area, the output signal of the first detection element 4 switches from a signal state to a no-signal state, the moving contact and the stationary contact separate, and the forced tripping action is completed.
[0048] like Figure 10 As shown, furthermore, after the power system fault is cleared and normal operating conditions are restored, in order to restore power supply and ensure the continuity and availability of the power system, it is necessary to release the forced opening state of the circuit breaker, so that it can regain the conditions for closing operation. When the circuit breaker is in the open state, the drive handle 34 is outside the detection range of the first detection element 4 (e.g., Figure 10 (a) As shown in the diagram. When it is necessary to release the forced tripping state, the drive motor 2 reverses, driving the transmission assembly 3 to move, which in turn drives the drive handle 34 to move, so that the drive handle 34 enters the detection range of the first detection element 4 (as shown in the diagram). Figure 10 (b) As shown, the first detection element 4 switches from a no-signal state to a signal-on state, and the circuit breaker releases the forced trip.
[0049] Furthermore, such as Figure 4 As shown, to facilitate internal circuit control of the electric operating mechanism, in one embodiment, the electric operating mechanism further includes a circuit control board 8, wherein the first detection element 4 and the second detection element 7 are disposed on the circuit control board 8, and the circuit control board 8 is electrically connected to the drive motor 2. The control module of the electric operating mechanism is integrated into the circuit control board 8, thereby realizing signal transmission between the drive motor 2 and the first detection element 4 and the second detection element 7.
[0050] Furthermore, such as Figure 1 As shown, to simplify the structure of the tripping element 6 and simultaneously enable the moving contact assembly 5 to rotate around the second axis, the tripping element 6 is rotated around the third axis. In some embodiments, the tripping element 6 includes a rotating part 61, a first rod 62, and a second rod 63. The rotating part 61 has a third axis and is rotatably connected to the housing 1. The first rod 62 is fixedly connected to the rotating part 61 and has a limiting hole 621. The moving contact assembly 5 has a limiting post 51 inserted into the limiting hole. The second rod 63 is fixedly connected to the rotating part 61 and can rotate around the third axis to approach or move away from the detection end of the second detection element 7. Therefore, when the moving contact assembly 5 rotates around the second axis, the limiting post engages with the limiting hole to cause the tripping element 6 to rotate around the third axis. When the second rod 63 approaches and abuts against the detection end of the second detection element 7, the second detection element 7 switches from a no-signal state to a signal-on state. When the second rod 63 moves away from the detection end of the second detection element 7 and loses contact with the detection end of the second detection element 7, the second detection element 7 switches from a signal-enabled state to a signal-free state.
[0051] Based on the same concept, this application also provides a circuit breaker, such as... Figures 5 to 10 As shown, the circuit breaker includes a housing 1, a moving contact assembly 5, and the electric operating mechanism described in any of the above-mentioned components. The drive motor 2, transmission assembly 3, first detection element 4, moving contact assembly 5, tripping element 6, and second detection element 7 are all located within the housing 1. The housing 1, as the load-bearing and protective component of the overall structure, possesses good mechanical strength and electrical insulation properties. It is used to house and secure the internal functional components while preventing external environmental interference or damage to the internal components, ensuring the safe and stable operation of the circuit breaker under various operating conditions.
[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0053] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. An electrically operated mechanism, characterised in that, include: The drive motor has an output terminal capable of forward and reverse rotation; A transmission assembly, wherein the input end of the transmission assembly is connected to the output end of the drive motor, the output end of the transmission assembly has a drive handle, and the output end of the transmission assembly is also used for transmission connection with the moving contact assembly. Under the drive of the drive motor, the drive handle can rotate around a first axis, and the transmission assembly enables the moving contact assembly to rotate around a second axis. The first detection element is located on the rotation path of the drive handle and is used to detect the rotation position of the drive handle; The tripping element is rotatable about a third axis and is used for transmission connection with the moving contact assembly, wherein the first axis, the second axis, and the third axis are parallel to each other; The second detection element is located on the rotation path of the tripping component. The second detection element is used to detect the on / off state of the moving contact and the stationary contact. The drive motor is activated to switch the first detection element between a signal-on and signal-off state, and / or to switch the second detection element between a signal-on and signal-off state.
2. The electrically operated mechanism according to claim 1, characterized in that When the drive motor rotates forward, the first detection element switches from a no-signal state to a signal-on state, so that the electric operating mechanism is at the origin position.
3. The electric operating mechanism according to claim 1, characterized in that, When the drive motor rotates forward, the first detection element switches from a signal-on state to a signal-off state and then back to a signal-on state, while the second detection element switches from a signal-off state to a signal-on state, so that the circuit breaker can be closed.
4. The electric operating mechanism according to claim 1, characterized in that, When the drive motor rotates forward, the first detection element switches from a signal-on state to a signal-off state, and the second detection element switches from a signal-on state to a signal-off state. When the drive motor rotates in reverse, the first detection element switches from a signal-off state to a signal-on state, so that the circuit breaker can be tripped.
5. The electric operating mechanism according to claim 1, characterized in that, When the drive motor rotates forward, the first detection element switches from a signal-on state to a signal-off state, so that the circuit breaker can be forced to open.
6. The electric operating mechanism according to claim 1, characterized in that, When the drive motor reverses, the first detection element switches from a no-signal state to a signal-on state, so that the circuit breaker is released from forced tripping.
7. The electric operating mechanism according to claim 1, characterized in that, It also includes a circuit control board, on which the first detection element and the second detection element are disposed, and the circuit control board is electrically connected to the drive motor.
8. The electric operating mechanism according to claim 1, characterized in that, The output end of the drive motor is provided with a worm gear, and the transmission assembly includes a first gear, a second gear, a third gear, and a linkage component that mesh and transmit power in sequence. The first gear meshes and transmits power with the worm gear. The third gear is coaxially provided with the drive handle. The linkage component can rotate around a fourth axis, which is parallel to the third axis. The linkage component is connected to the moving contact assembly.
9. The electric operating mechanism according to claim 1, characterized in that, The tripping component includes a rotating part, a first rod, and a second rod; the rotating part has the third axis; the first rod is fixedly connected to the rotating part, and a limit hole is formed on the first rod; the moving contact assembly is provided with a limit post inserted into the limit hole; the second rod is fixedly connected to the rotating part and can rotate around the third axis to approach or move away from the detection end of the second detection element.
10. A circuit breaker, characterized in that, The device includes a housing and an electric operating mechanism as described in any one of claims 1-9, wherein the drive motor, the transmission assembly, the first detection element, the tripping element, and the second detection element are all located within the housing.