Operating mechanism and load switch

Abstract

The invention provides an operating mechanism and a load switch, and relates to the technical field of load switches. In the operating mechanism, a main shaft is used for executing switching-on and switching-off through an executing mechanism; the main shaft is provided with a shifting block protruding in the radial direction. The transmission assembly is in transmission connection with the driving device. The clutch structure comprises a clutch piece, a pusher dog and an elastic piece; the pusher dog is rotatably connected to the transmission assembly; the pusher dog is provided with a first end and a second end which are opposite; the pusher dog rotates to the first end along with the transmission assembly to abut against the shifting block so as to drive the spindle to rotate; the elastic piece is connected with the pusher dog and used for providing elastic force for the pusher dog when the first end is away from the main shaft. The clutch piece is used for being fixed to the bearing body and abutting against the second end, so that the pusher dog rotates relative to the transmission assembly to the first end and is lifted up to cross the shifting block. The load switch provided by the invention adopts the operating mechanism. According to the operating mechanism and the load switch provided by the invention, the technical problem that electric control operation is easy to lose efficacy due to manual operation can be improved.

Description

Technical Field

[0001] This invention relates to the field of load switch technology, and more specifically, to an operating mechanism and a load switch. Background Technology

[0002] Circuit breakers, load switches, and disconnect switches are three common types of switching equipment in power systems. They each have their own focus in terms of function, structure, and application scenarios, but they work together to ensure the safe operation of the circuit. Simply put: disconnect switches are responsible for "isolation," load switches are responsible for "connection and disconnection," and circuit breakers are responsible for "protection."

[0003] In existing technologies, more and more load switches can simultaneously have both manual and electrical control operation functions. However, when both operation modes are available at the same time, manual operation is prone to over-operation, which can affect the operating mechanism of electrical control operation, leading to loss of control or damage to the operating mechanism, and ultimately causing the electrical control operation to fail. Summary of the Invention

[0004] The technical problem solved by this invention is how to improve the technical problem that manual operation in the prior art is prone to causing failure of electronic control operation.

[0005] The embodiments of the present invention can be implemented as follows: This invention provides an operating mechanism, comprising: The main shaft is used for driving connection with the actuator of the load switch. The main shaft is also used to extend to the outside of the load switch for manual operation. The actuator is used to perform closing and opening. The main shaft is provided with radially protruding toggle blocks. A drive unit for fixedly connecting to the load switch's supporting body; The transmission component is connected to the drive device in a transmission manner; A clutch structure includes a clutch element, a pawl, and an elastic element; the pawl is rotatably connected to the transmission assembly; the pawl has a first end and a second end opposite to each other; the pawl is used to follow the transmission assembly to rotate until the first end abuts against the paddle block to drive the main shaft to rotate; the elastic element is connected to the pawl and is used to provide elastic force to the pawl when the first end moves away from the main shaft; the clutch element is used to be fixed to the support body and is located on the path of the second end following the transmission assembly, the clutch element is used to abut against the second end, causing the pawl to rotate relative to the transmission assembly until the first end is lifted to pass over the paddle block.

[0006] Optionally, there are two pawls and two elastic elements, and both pawls are rotatably connected to the transmission assembly; in the circumferential direction of the main shaft, the two pawls are located at opposite ends of the paddle block; and the two elastic elements are connected to the two pawls in a one-to-one correspondence.

[0007] Optionally, in the circumferential direction of the spindle, the distance between the two pawls is greater than the length of the pawl.

[0008] Optionally, the transmission assembly includes an output gear and a transmission gear; the output gear is connected to the output shaft of the drive device, the transmission gear is sleeved on the main shaft and can rotate freely relative to the main shaft; the output gear meshes with the transmission gear; the pawl and the elastic element are both connected to the transmission gear.

[0009] Optionally, when the pawl contacts the spindle, a contact point is formed, and the radial direction of the spindle passing through the contact point is set at an angle to the extension direction of the pawl.

[0010] Optionally, a fillet is provided on the side of the second end away from the spindle.

[0011] Optionally, the clutch includes a clutch portion and a fixing portion; the fixing portion is used to fix to the bearing body, and the fixing portion has a cavity at its center, and the paddle, the pawl and the elastic element are all located inside the cavity; the clutch portion protrudes from the inner wall of the cavity.

[0012] Optionally, guide ramps are formed at both ends of the clutch in the circumferential direction of the main shaft.

[0013] Optionally, the lever has two extreme positions during its rotational stroke; when the lever is in the extreme position, the actuator completes the closing or opening of the circuit; when the lever is pushed to one of the extreme positions by the pawl, the second end of the pawl abuts against the clutch and lifts the first end to disengage from the lever.

[0014] The advantages of the operating mechanism provided by this invention compared to the prior art include: When the operating mechanism is used in a load switch, during operation of the drive unit, the pawl rotates circumferentially around the main shaft via the transmission component. When the pawl abuts against the lever, it pushes the main shaft, facilitating automated drive of the main shaft. Furthermore, due to the clutch mechanism, when the pawl pushes the lever to a preset position, the clutch abuts against the second end of the pawl, causing the pawl to rotate relative to the transmission component. This lifts the first end of the pawl over the lever, allowing it to disengage from the lever after the drive unit has automatically driven the main shaft to its designated position. Even manual operation via the main shaft will not affect the drive unit. Therefore, manual operation can avoid impacting the electronically controlled operating mechanism, addressing the technical problem in existing technologies where manual operation easily leads to malfunctions in the electronically controlled operation.

[0015] Furthermore, since the pawl disengages from the block at its extreme position, even if the pawl continues to rotate under the driving action of the drive device, it will not cause the pawl to move the block. This greatly reduces the requirement for the drive device's driving accuracy. By simply setting the clutch in the appropriate position, the drive device can accurately close and open the circuit breaker, reducing the requirements for the drive device and thus reducing the cost of selecting the drive device.

[0016] A load switch includes the aforementioned operating mechanism.

[0017] The load switch provided by the present invention adopts the above-described operating mechanism. The beneficial effects of the load switch compared with the prior art are the same as the beneficial effects of the operating mechanism provided above compared with the prior art, and will not be repeated here. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the load switch from a first-view perspective provided in the embodiments of this application; Figure 2 This is a structural schematic diagram of the load switch provided in the embodiments of this application from a second perspective; Figure 3 This is a schematic diagram of a partial structure of the load switch provided in the embodiments of this application; Figure 4 This is a schematic diagram of the first state of the clutch structure in the load switch in the embodiments of this application; Figure 5This is a schematic diagram of the second state of the clutch structure in the load switch in the embodiments of this application; Figure 6 This is a schematic diagram of the clutch structure in the load switch under the third state in the embodiments of this application; Figure 7 This is a schematic diagram of the fourth state of the clutch structure in the load switch in the embodiments of this application.

[0020] Icons: Load switch 10, bearing body 11, actuator 12, operating mechanism 13, main shaft 100, lever 101, drive device 200, transmission assembly 300, output gear 310, transmission gear 320, clutch structure 400, clutch element 410, guide slope 401, fixing part 411, cavity 4111, clutch part 412, pawl 420, first end 421, second end 422, elastic element 430. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention 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 invention.

[0025] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0027] Please refer to the following: Figures 1-7 This embodiment provides an operating mechanism 13 and a load switch 10 using the operating mechanism 13. The load switch 10 can be applied in a circuit to realize the switching of the circuit. The load switch 10 has at least a closed and an open state. When the load switch 10 is in the closed state, the circuit is connected; when the load switch 10 is in the open state, the circuit is disconnected. The operating mechanism 13 and the load switch 10 provided in this embodiment can improve the technical problem in the prior art where manual operation easily leads to the failure of electrical control operation.

[0028] In this embodiment, please refer to the following: Figure 1 and Figure 2 The load switch 10 includes a load-bearing body 11, an actuator 12, and an operating mechanism 13 as provided in this embodiment. The actuator 12 is used to close and open the circuit under the action of the operating mechanism 13. In other words, the operating mechanism 13 is connected to the actuator 12; when the operating mechanism 13 operates, it drives the actuator 12 to operate, thus closing and opening the circuit. Both the actuator 12 and the operating mechanism 13 are mounted on the load-bearing body 11, which provides load-bearing support to the actuator 12 and the operating mechanism 13, ensuring the integrity of the load switch 10 and guaranteeing the stable operation of the actuator 12 and the operating mechanism 13.

[0029] Furthermore, please refer to the following: Figure 2 and Figure 3The operating mechanism 13 includes a main shaft 100, a drive unit 200, a transmission assembly 300, and a clutch structure 400. The main shaft 100 is drive-connected to the actuator 12 of the load switch 10 to transmit power to the actuator 12 for closing and opening; in addition, the main shaft 100 extends outside the load switch 10 for manual operation. A radially protruding lever 101 is provided on the main shaft 100. The drive unit 200 is fixedly connected to the load-bearing body 11 of the load switch 10. The transmission assembly 300 is drive-connected to the drive unit 200. The clutch structure 400 includes a clutch element 410, a pawl 420, and an elastic element 430. The pawl 420 is rotatably connected to the transmission assembly 300. The pawl 420 has a first end 421 and a second end 422 opposite to each other. The pawl 420 is used to follow the transmission assembly 300 as it rotates to the first end 421 to abut against the paddle block 101 to drive the main shaft 100 to rotate. The elastic element 430 is connected to the pawl 420 and is used to provide elastic force to the pawl 420 when the first end 421 moves away from the main shaft 100. The clutch element 410 is used to be fixed to the support body 11 and is located on the path of the second end 422 following the transmission assembly 300. The clutch element 410 is used to abut against the second end 422, so that the pawl 420 rotates relative to the transmission assembly 300 until the first end 421 is lifted to pass over the paddle block 101.

[0030] It should be noted that the drive device 200 can be a motor. A controller can be installed in the load switch 10, which can control the operation of the drive device 200 based on user-input commands, thereby realizing electrical control of the operating mechanism 13 and automating the load switch 10.

[0031] In addition, in this embodiment, the elastic element 430 functions to elastically deform when the second end 422 of the pawl 420 abuts against the clutch 410 and causes the pawl 420 to rotate relative to the transmission assembly 300. This elastic deformation provides a force to the pawl 420, which drives the pawl 420 to rotate when the second end 422 disengages from the clutch 410, so that the first end 421 moves closer to the side of the main shaft 100. In some embodiments, the elastic element 430 can always remain in a state of elastic deformation, that is, when the second end 422 is not abutting against the clutch 410, the first end 421 abuts against the outer periphery of the main shaft 100. In other embodiments, the elastic element 430 does not undergo elastic deformation in its initial state. When the second end 422 does not abut against the clutch element 410, the first end 421 of the pawl 420 can contact the outer periphery of the main shaft 100. Of course, the first end 421 of the pawl 420 can also have a certain gap with the outer periphery of the main shaft 100, as long as it can rotate with the transmission assembly 300 until it abuts against the paddle 101 to complete the pushing of the paddle 101. In addition, "lifting" the first end 421 means that the first end 421 of the pawl 420 moves away from the main shaft 100 in the radial direction of the main shaft 100, so that it can be higher than the paddle 101 in the radial direction of the main shaft 100, thereby allowing the pawl 420 to pass over the paddle 101.

[0032] When the main shaft 100 is driven by the drive device 200, the drive device 200 transmits power to the transmission assembly 300, which in turn drives the pawl 420 to rotate. During the rotation of the pawl 420, the first end 421 of the pawl 420 abuts against the lever 101. The pawl 420 drives the lever 101 to move, thereby driving the main shaft 100. When the main shaft 100 rotates to the position to achieve closing and opening, the pawl 420 is configured such that the second end 422 abuts against the clutch 410. Through the abutment of the clutch 410, the pawl 420 can rotate relative to the transmission assembly 300, causing the first end 421 to rise so that it can pass over the lever 101, thereby disengaging the pawl 420 from the lever 101. Therefore, when the circuit is closed or open, even if the drive unit 200 continues to operate, the pawl 420 will disengage from the lever 101, preventing it from pushing the lever 101 further and thus not affecting its position. Furthermore, if the spindle 100 is manually operated at this time, the pawl 420 will disengage from the lever 101, preventing the lever 101 from driving the pawl 420 in the opposite direction and causing the drive unit 200 to be passively driven and damaged during standby. Based on this, the operating mechanism 13 and the load switch 10 can improve the technical problem in the prior art where manual operation easily leads to electrical control operation failure.

[0033] Furthermore, in this embodiment, there are two pawls 420 and two elastic elements 430. Both pawls 420 are rotatably connected to the transmission assembly 300. In the circumferential direction of the main shaft 100, the two pawls 420 are located at opposite ends of the lever 101. The two elastic elements 430 are connected to the two pawls 420 in a one-to-one correspondence. With two pawls 420, the two pawls 420 correspond to opposite ends of the lever 101. In other words, one pawl 420 is used to actuate the lever 101 to drive the main shaft 100 to complete the closing operation; the other pawl 420 is used to actuate the lever 101 to drive the main shaft 100 to complete the opening operation.

[0034] For example, when the drive unit 200 is running in the forward direction, the drive unit 200 transmits power to the transmission assembly 300, which drives the two pawls 420 to rotate. One of the pawls 420 moves close to the lever block 101. When the pawl 420 moves close to the lever block 101 and abuts against the lever block 101, power can be transmitted to the main shaft 100 through the pawl 420 to drive the main shaft 100. Then, the main shaft 100 drives the actuator 12 to complete the closing of the circuit. Correspondingly, when the drive unit 200 operates in the reverse direction, it transmits power to the transmission assembly 300. The transmission assembly 300 drives two pawls 420 to rotate, while another pawl 420 moves closer to the lever 101. When the pawl 420 moves closer to the lever 101 and abuts against it, power can be transmitted to the main shaft 100, driving the main shaft 100. The main shaft 100 then drives the actuator 12 to complete the circuit breaker tripping. It is noteworthy that while one pawl 420 moves closer to the lever 101, the other pawl 420 moves away from the lever 101.

[0035] Please refer to the following: Figures 4 to 7 ,in, Figure 4 and Figure 5 This can be viewed as the drive device 200 driving the pawl 420 to drive the lever 101 when it is running in the forward direction; wherein, in Figure 4 In the middle, the first end 421 of the pawl 420 abuts against the paddle block 101, and the second end 421 of the pawl 420 begins to contact the clutch element 410; after the drive device 200 continues to operate, as Figure 5 This causes the second end 422 of the pawl 420 to move to the high position of the clutch member 410, thereby causing the first end 421 of the pawl 420 to rise so that it can pass over the lever 101. Additionally, Figure 6 and Figure 7 This can be viewed as the drive device 200 driving the pawl 420 to drive the lever 101 when it runs in reverse; where, Figure 6In the middle, the first end 421 of another pawl 420 abuts against the other end of the paddle block 101, and the second end 421 of the pawl 420 begins to contact the other end of the clutch member 410; after the drive unit 200 continues to operate, as Figure 7 This causes the second end 422 of the pawl 420 to move to the high position of the clutch 410, thereby causing the first end 421 of the pawl 420 to be raised so as to pass over the paddle block 101.

[0036] Furthermore, in the circumferential direction of the spindle 100, the distance between the two pawls 420 is greater than the length of the clutch 101. Since the distance between the two pawls 420 is greater than the length of the clutch 410 in the circumferential direction of the spindle 100, when one pawl 420 abuts against the clutch 101, the other pawl 420 has a certain distance from the clutch 101. This provides a buffer margin for the clutch 101 in the direction of movement close to the pawl 420, preventing accidental operation during manual operation that could push the pawl 420, thus avoiding damage to the drive device 200 due to linkage.

[0037] It is worth noting that in this embodiment, the clutch 410 is configured such that when the toggle block 101 completes closing or opening, the second end 422 of the toggle pawl 420 that moves the toggle block 101 abuts against the clutch 410, and just enough to raise the first end 421 of the toggle pawl 420 so that it can pass over the toggle block 101. Based on this, even if the drive device 200 overdrives, it will not affect the position of the toggle block 101, thereby ensuring the stability and accuracy of closing and opening.

[0038] Furthermore, in this embodiment, the clutch 410 has a certain length in the direction of the moving path of the pawl 420, so that after the drive device 200 has completed the closing or opening of the circuit, the second end 422 of the pawl 420 remains in a state of abutting against the clutch 410. After the circuit breaker is closed or opened, one of the pawls 420 abuts against the clutch 410, causing the first end 421 to lift up and disengage from the lever 101. The other pawl 420 is spaced apart from the lever 101 in the circumferential direction of the main shaft 100. In other words, one pawl 420 avoids the lever 101 in the radial direction of the main shaft 100, and the other pawl 420 avoids the lever 420 in the circumferential direction of the main shaft 100. Therefore, when the main shaft 100 is rotated manually, the lever 101 will not transmit power to the transmission assembly 300 through the pawl 420 within the rotation stroke of the main shaft 100. This will prevent manual operation from affecting or even damaging the drive device 200.

[0039] It should be understood that in other embodiments, the distance between the two pawls 420 in the circumferential direction of the spindle 100 can also be the same as the length of the lever 101. In other words, when neither of the two pawls 420 is abutting against the clutch 410, the first ends 421 of the two pawls 420 respectively contact the opposite ends of the lever 101. In this case, the drive device 200 can directly drive the lever 101 when it is running. When the drive device 200 drives the spindle 100 and completes the closing or opening of the circuit, the second end 422 of one of the pawls 420 abuts against the clutch 410, which can raise the first end 421 of one of the pawls 420 to pass over the lever 101. At this time, since the load switch 10 has completed the closing or opening, when performing manual operation, only the opposite opening or closing action needs to be performed. To avoid affecting the internal structure of the drive device 200; for example, after the closing action is completed under the drive of the drive device 200, if it is necessary to manually drive the spindle 100, only the reverse opening action needs to be performed to avoid the manual operation affecting the drive device 200; conversely, when opening the circuit in the reverse drive, the second end 422 of the pawl 420 in this direction abuts against the clutch 410, which can also avoid the paddle block 101 and avoid the manual operation affecting the drive device 200.

[0040] Of course, in some embodiments, only one pawl 420 and one elastic element 430 may be provided. In this case, the drive device 200 can only drive the main shaft 100 from one direction of the lever 101, thus only achieving the function of closing or opening the circuit. In this case, taking the closing function of the drive device 200 as an example, after the drive device 200 transmits power to the pawl 420 through the transmission assembly 300, the pawl 420 rotates to abut against the lever 101, and then drives the main shaft 100 by abutting the lever 101. After closing, the second end 422 of the pawl 420 abuts against the clutch element 410, causing the pawl 420 to rotate relative to the transmission assembly 300, and causing the first end 421 to rise so that it can pass over the lever 101. Based on this, when opening the circuit is required, it needs to be operated manually, that is, the main shaft 100 is driven manually to achieve opening. During the manual driving of the spindle 100, since the first end 421 of the pawl 420 is raised to pass over the paddle block 101, the paddle block 101 cannot affect the pawl 420 during the rotation of the spindle 100, and therefore cannot affect the drive device 200, thus avoiding damage to the drive device 200 under manual action. It is worth noting that after the circuit breaker is manually tripped, if it needs to be re-closed, it can be done manually; alternatively, the drive device 200 can drive the main shaft 100. In this case, the drive device 200 does not need to rotate in the reverse direction to return to its original position and can rotate directly in the forward direction. Since the clutch 410 has a certain length, after the pawl 420 continues to rotate a certain distance, it will disengage from the clutch 410, and the first end 421 will move closer to the main shaft 100. When the pawl 420 continues to rotate and rotates around the main shaft 100 for nearly one revolution, it can again press against the lever 101 and move the lever 101 to complete the circuit breaker. At the same time, after the circuit breaker is closed, the second end 422 of the pawl 420 presses against the clutch 410 again, thus achieving the purpose of disengaging the first end 421 of the pawl 420 from the lever 101.

[0041] In this embodiment, the transmission assembly 300 includes an output gear 310 and a transmission gear 320. The output gear 310 is connected to the output shaft of the drive device 200, and the transmission gear 320 is sleeved on the main shaft 100 and can rotate freely relative to the main shaft 100. The output gear 310 meshes with the transmission gear 320. The pawl 420 and the elastic element 430 are both connected to the transmission gear 320. During the operation of the drive device 200, the output gear 310 transmits power to the transmission gear 320. Before the pawl 420 and the lever 101 abut against each other, the transmission gear 320 rotates freely relative to the main shaft 100. When the first end 421 of the pawl 420 abuts against the lever 101, the transmission gear 320 can transmit power to the main shaft 100, thereby driving the main shaft 100. The meshing of the output gear 310 and the transmission gear 320 ensures stable power transmission. Furthermore, the power transmission path is extended through the output gear 310 and the transmission gear 320, facilitating the placement of the drive device 200. It should be understood that in other embodiments, the transmission gear 320 can be omitted, and the output gear 310 can be directly coaxially mounted with the main shaft 100, with the pawl 420 and the elastic element 430 mounted on the output gear 310.

[0042] Optionally, in this embodiment, when the pawl 420 contacts the spindle 100, a contact point is formed, and the radial direction of the spindle 100 through the contact point is set at an angle to the extending direction of the pawl 420. Figure 3 The position marked A can be considered as the contact point of the pawl 420 in this state; of course, the position of the contact point changes after the pawl 420 rotates with the transmission assembly 300. In other words, the pawl 420 can be considered to be approximately tangent to the outer circumference of the main shaft 100. Based on this, when the pawl 420 abuts against the lever 101, the reaction force of the lever 101 on the pawl 420 is mostly along the length direction of the pawl 420, which can prevent the pawl 420 from rotating under the reaction force and ensure the stability of the pawl 420 and the lever 101 when they abut against each other. In addition, when the second end 422 abuts against the clutch 410, the direction of the force applied by the clutch 410 to the second end 422 is approximately perpendicular to the length direction of the pawl 420, which also facilitates the rotation of the pawl 420.

[0043] It is worth noting that when two pawls 420 are set, the two pawls 420 are arranged in a figure-eight shape. In other words, the end of the two pawls 420 that is close to each other is the first end 421, and the end of the two pawls 420 that is far from each other is the second end 422. In this configuration, when the drive unit 200 is running in the forward direction, the first end 421 of one of the pawls 420 abuts against the lever 101 to move the lever 101 to complete the closing or opening of the circuit. After this, the second end 422 of the pawl 420 abuts against the clutch 410. If it is necessary to move the lever 101 again using the pawl 420, the drive unit 200 can continue to run in the forward direction. When the other pawl 420 moves to the lever 101, since the pawl 420 is approximately tangent to the main shaft 100, the lever 101 contacts the side of the first end 421 near the main shaft 100, which can cause the first end 421 of the pawl 420 to lift up and pass over the lever 101. After the other pawl 420 passes over the lever 101, the drive unit 200 continues to run, so that the first end 421 of the lever 101 abuts against the lever 101, which can realize the movement of the lever 101, thereby driving the main shaft 100.

[0044] In this embodiment, a rounded corner is provided on the side of the second end 422 away from the main shaft 100. When the second end 422 contacts the clutch 410, the rounded corner ensures smooth contact between the second end 422 and the clutch 410. This avoids scratching damage to the pawl 420 or the clutch 410, and also provides a certain degree of sliding guidance to prevent jamming or jamming during relative movement between the second end 422 and the clutch 410.

[0045] It should be noted that in some embodiments, if the drive device 200 needs to run in reverse, the second end 422 may abut against the end of the clutch 410. If the clutch 410 is provided with rounded corners, the second end 422 can slide to the top of the clutch 410 through the guidance of the rounded corners, thereby passing over the clutch 410, thus avoiding the clutch 410 and the pawl 420 from getting stuck.

[0046] In this embodiment, please refer to Figures 3-7 The clutch component 410 includes a clutch portion 412 and a fixing portion 411; the fixing portion 411 is used to fix to the bearing body 11, and a cavity 4111 is provided in the center of the fixing portion 411. The lever 101, the pawl 420, and the elastic element 430 are all located inside the cavity 4111; the clutch portion 412 protrudes from the inner wall of the cavity 4111. It is worth noting that... Figures 3 to 7In the diagram, the dashed lines are only for easy distinction between the fixing part 411 and the clutch part 412. The fixing part 411 is connected to a plate-like structure of the supporting body 11, and the transmission gear 320 is located on the outside of the fixing part and encloses the cavity 4111. Thus, the transmission gear 320, the fixing part 411 and the supporting body 11 together form a roughly enclosed space. The pawl 420, the lever 101 and the elastic element 430 are all located inside this enclosed space, which can provide protection for the pawl 420, the lever 101 and the elastic element 430, preventing dust from affecting the transmission of the pawl 420 and the lever 101, and also providing protection for the elastic element 430, ensuring that the elastic element 430 can effectively provide the reset function of the pawl 420, ensuring that the pawl 420 can return to the state that can hold the lever 101 after disengaging from the clutch part 410, and ensuring the stability of the automatic closing and opening of the circuit breaker.

[0047] It should be noted that, in Figures 1 to 7 In order to facilitate observation of the operation mode of the clutch structure, the plate-like structure on the side of the fixed part 411 away from the transmission gear 320 is omitted in the figure.

[0048] In order to accommodate the movement of the pawl 420, the clutch part 412 has an arc-shaped profile on the side near the main shaft 100. After the first end 421 is lifted by the second end 422 of the pawl 420 abutting against the clutch part 412, if the drive device 200 continues to operate, the second end 422 of the pawl 420 slides on the arc-shaped profile on the clutch part 412. It can remain in the state of abutting the second end 422 before the first end 421 passes the shift block 101, ensuring that the first end 421 can pass the shift block 101.

[0049] Furthermore, guide slopes 401 are formed at both ends of the clutch portion 412 in the circumferential direction of the main shaft 100. The guide slopes 401 can engage with the fillet of the second end 422 to achieve smooth contact between the clutch portion 412 and the second end 422. When the clutch portion 412 and the second end 422 are in contact, the guide slopes 401 guide towards the fillet, facilitating the smooth movement of the second end 422 to the higher position of the clutch portion 412. Even when the drive device 200 runs in reverse and the second end 422 contacts the clutch portion 412, the smooth contact between the fillet and the guide slopes 401 allows the second end 422 to pass over the clutch portion 412, further preventing jamming between the clutch portion 412 and the second end 422.

[0050] In this embodiment, the toggle block 101 has two extreme positions during its rotational stroke; when the toggle block 101 is in the extreme position, the actuator 12 completes the closing or opening of the circuit. In the illustration, it can be represented as... Figure 5 The position of the middle dial block 101 is one of the extreme positions, with Figure 7The position of the middle lever 101 is another extreme position. When the lever 101 is pushed to one of the extreme positions by the pawl 420, the second end 422 of the pawl 420 abuts against the clutch 410 and causes the first end 421 to lift off the lever 101. In other words, when the lever 101 is in one extreme position, the spindle 100 is in a closed state; when the lever 101 is in the other extreme position, the spindle 100 is in a closed state; and during the rotation of the spindle 100, the lever 101 is within the stroke limited by these two extreme positions.

[0051] Based on the two extreme positions of the lever 101 and the travel limited by these two extreme positions, when only one lever 420 is provided, the clutch 410 is configured such that when the second end 422 of the lever 420 is held by the clutch 410 and just disengaged from the lever 101, the lever 101 is precisely at one of its extreme positions. At this time, when the drive device 200 moves the lever 420 and moves the lever 101 to its extreme position, the second end 422 of the lever 420 abuts against the clutch 410, achieving the purpose of the lever 420 avoiding the lever 101. Therefore, when the spindle 100 is manually rotated, the lever 101 can be prevented from affecting the lever 420, thereby preventing manual operation from affecting the drive device 200.

[0052] It should be noted that the "limit positions" mentioned in this application refer to the two positions of the lever 101 corresponding to the two states of the main shaft 100 when the actuator 12 has just completed closing and opening. In some embodiments, a device can be provided on the bearing body 11 to limit the rotation range of the main shaft 100, so that the main shaft 100 can only rotate within the stroke limited by the two "limit positions". Of course, there can be a certain margin or error. In this case, during the rotation of the main shaft 100 within its stroke range, on the one hand, the limiting device can limit the main shaft 100 to avoid the lever 101 from rotating excessively and affecting the drive device 200; on the other hand, the lever 420 can avoid the lever 101 from being affected by avoiding it. Of course, in other embodiments, a visible mark can be set on the outside of the load switch 10 to indicate the "limit position". This mark visually restricts the user's operation of the spindle 100. At the same time, combined with the avoidance of the toggle block 101 by the pawl 420, the situation of manual operation affecting the drive device 200 can be further effectively avoided. It is worth noting that the visible mark is mainly used to restrict the user's manual operation under normal circumstances, while the avoidance of the toggle block 101 by the pawl 420 can further protect the drive device 200 in case of user misoperation or excessive operation.

[0053] Furthermore, when two pawls 420 are provided, during forward operation of the drive unit 200, one of the pawls 420 moves the lever 101. When the lever 101 moves to one of its extreme positions, the second end 422 of the pawl 420 abuts against the clutch 410, and the first end 421 of the pawl 420 is raised to pass over the lever 101, thus avoiding the lever 101. Conversely, the other pawl 420 is spaced apart from the lever 101, also providing a clearance. Based on this, when the spindle 100 is manually operated, both pawls 420 avoid the lever 101, thus preventing manual operation from affecting the drive unit 200. Similarly, when the drive unit 200 is running in reverse, one of the pawls 420 moves the lever 101. When the lever 101 moves to another extreme position, the pawl 420 also abuts against the clutch 410, so that the first end 421 is lifted to avoid the lever 101. At the same time, the other pawl 420 is spaced apart from the lever 101, which also forms a clearance. When the spindle 100 is manually operated, both pawls 420 avoid the lever 101, thus avoiding the impact of manual operation on the drive unit 200.

[0054] In summary, when the operating mechanism 13 is applied to the load switch 10, during the operation of the drive device 200, the pawl 420 rotates circumferentially around the main shaft 100 via the transmission component 300. When the pawl 420 abuts against the lever 101, it can push the main shaft 100, which is beneficial for the automated driving of the main shaft 100. Furthermore, due to the setting of the clutch 410, when the pawl 420 pushes the lever 101 to rotate to the preset position, the clutch 410 abuts against the second end 422 of the pawl 420, realizing the rotation of the pawl 420 relative to the transmission component 300. This causes the first end 421 of the pawl 420 to lift up and pass over the lever 101. Based on this, after the drive device 200 has automatically driven the main shaft 100 to the desired position, it can disengage from the lever 101. Even if manual operation is performed via the main shaft 100, it will not affect the drive device 200. Based on this, manual operation can be avoided from affecting the electronic control operating mechanism 13, thus improving the technical problem in the prior art where manual operation easily leads to failure of electronic control operation. Furthermore, since the pawl 420 disengages from the lever 101 at its extreme position, even if the pawl 420 continues to rotate under the driving action of the drive device 200, it will not cause the pawl 420 to move the lever 101. This significantly reduces the requirement for the driving accuracy of the drive device 200. By simply setting the clutch 410 in an appropriate position, the drive device 200 can accurately close and open the circuit, reducing the requirements for the drive device 200 and thus reducing the selection cost of the drive device 200.

[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An operating mechanism (13), characterized in that, include: A main shaft (100) is used for transmission connection with the actuator (12) of the load switch (10). The main shaft (100) is also used to extend to the outside of the load switch (10) for manual operation. The actuator (12) is used to perform closing and opening. A radially protruding lever (101) is provided on the main shaft (100). A drive unit (200) is used to fix the load body (11) of the load switch (10). The transmission assembly (300) is connected to the drive device (200) in a transmission manner; The clutch structure (400) includes a clutch element (410), a pawl (420), and an elastic element (430); the pawl (420) is rotatably connected to the transmission assembly (300); the pawl (420) has a first end (421) and a second end (422) opposite to each other; the pawl (420) is used to follow the transmission assembly (300) to rotate to the first end (421) to abut against the paddle (101) to drive the main shaft (100) to rotate; the elastic element (430) and the pawl (421) are connected to the transmission assembly (300) to rotate. 0) Connected and used to provide elastic force to the pawl (420) when the first end (421) is away from the main shaft (100); the clutch (410) is used to be fixed to the support body (11) and located on the path of the second end (422) following the transmission assembly (300), the clutch (410) is used to abut the second end (422) to rotate the pawl (420) relative to the transmission assembly (300) until the first end (421) is lifted to pass over the paddle (101).

2. The operating mechanism (13) according to claim 1, characterized in that, There are two of each of the pawls (420) and the elastic element (430), and both pawls (420) are rotatably connected to the transmission assembly (300); in the circumferential direction of the main shaft (100), the two pawls (420) are located at opposite ends of the paddle block (101); the two elastic elements (430) are connected to the two pawls (420) in a one-to-one correspondence.

3. The operating mechanism (13) according to claim 2, characterized in that, In the circumferential direction of the main shaft (100), the distance between the two pawls (420) is greater than the length of the pawl (101).

4. The operating mechanism (13) according to claim 1, characterized in that, The transmission assembly (300) includes an output gear (310) and a transmission gear (320); the output gear (310) is connected to the output shaft of the drive device (200), and the transmission gear (320) is sleeved on the main shaft (100) and can rotate freely relative to the main shaft (100); the output gear (310) meshes with the transmission gear (320); the pawl (420) and the elastic element (430) are both connected to the transmission gear (320).

5. The operating mechanism (13) according to claim 1, characterized in that, When the pawl (420) contacts the spindle (100), a contact point is formed, and the radial direction of the spindle (100) through the contact point is set at an angle to the extension direction of the pawl (420).

6. The operating mechanism (13) according to claim 1, characterized in that, The second end (422) has a rounded corner on the side away from the main shaft (100).

7. The operating mechanism (13) according to claim 1, characterized in that, The clutch (410) includes a clutch part (412) and a fixing part (411); the fixing part (411) is used to fix the bearing body (11), and the fixing part (411) has a cavity (4111) in the center, and the paddle (101), the pawl (420) and the elastic element (430) are all located inside the cavity (4111); the clutch part (412) protrudes from the inner wall of the cavity (4111).

8. The operating mechanism (13) according to claim 7, characterized in that, In the circumferential direction of the main shaft (100), guide slopes (401) are formed at both ends of the clutch (412).

9. The operating mechanism (13) according to any one of claims 1-8, characterized in that, The lever (101) has two extreme positions during its rotational stroke; when the lever (101) is in the extreme position, the actuator (12) completes the closing or opening of the circuit; when the lever (101) is pushed to one of the extreme positions by the pawl (420), the second end (422) of the pawl (420) abuts against the clutch (410) and causes the first end (421) to be lifted off the lever (101).

10. A load switch (10), characterized in that, Includes the operating mechanism (13) as described in any one of claims 1-9.

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