One-way transmission structure and electric operating device of reclosing circuit breaker

Abstract

The application relates to the technical field of electrical connection devices, in particular to a one-way transmission structure and an electric operating device of a reclosing circuit breaker. The one-way transmission structure comprises a first rotating member and a second rotating assembly. The first rotating member is provided with a first mounting hole and a first mounting groove, and the second rotating assembly comprises a support, a magnetic ring, a magnetic column and a transmission part. The one-way transmission structure drives the magnetic column to stretch and retract through the same magnetic repulsion force of the magnetic ring and the magnetic column and the combined design of the first rotating member annular groove wall sliding surface and the transmission surface, and realizes one-way power control. When the magnetic column rotates in the first direction relative to the sliding surface, the magnetic column is repelled outward and abuts against the transmission surface, forming rigid transmission. When the magnetic column rotates in the second direction relative to the sliding surface, the sliding surface forces the magnetic column to retract towards the magnetic ring, realizing idle sliding. When the one-way transmission structure is used in the electric operating device of the reclosing circuit breaker, damage of the circuit breaker caused by motor reverse rotation can be avoided.

Description

Technical Field

[0001] This application relates to the field of electrical connection device technology, and in particular to a one-way transmission structure and an electric operating device for a reclosing circuit breaker. Background Technology

[0002] Reclosing circuit breakers are important protective electrical devices in low-voltage power distribution systems, serving to connect and protect circuits. Reclosing circuit breakers have both manual and electric operation modes; electric operation allows for remote opening and closing without the need for on-site personnel.

[0003] A reclosing circuit breaker includes a motor, which is the power source for its electric operation. Under normal circumstances, the reclosing circuit breaker operates in a unidirectional manner, such as opening first and then closing. However, if the motor reverses direction, it will cause an incorrect operating sequence, affecting the equipment's functionality. Summary of the Invention

[0004] This application provides a unidirectional transmission structure and an electric operating device for a reclosing circuit breaker, which can prevent motor reversal from causing damage to the circuit breaker equipment.

[0005] The technical solution of this application is as follows:

[0006] In a first aspect, this application provides a unidirectional transmission structure, which includes a first rotating member and a second rotating assembly. The first rotating member has a first mounting hole and a first mounting groove. The first mounting hole is used to cooperate with a mounting shaft, enabling the first rotating member to rotate around the mounting shaft. The first mounting groove is formed on one axial side of the first rotating member and is used to mount the second rotating assembly.

[0007] The second rotating assembly includes a bracket, a magnetic ring, a magnetic column, and a transmission part. The magnetic ring and magnetic column are mounted by the bracket. The magnetic ring and magnetic column are like poles and repel each other. The magnetic ring is coaxial with the first rotating component. The magnetic column is located on the outer periphery of the magnetic ring, and the axis of the magnetic column points to the center of the magnetic ring. The magnetic column can reciprocate along its own axis. Under the action of the repulsive force of the magnetic ring, the end of the magnetic column protrudes from the bracket and cooperates with the circumferential groove wall of the first mounting groove.

[0008] The circumferential groove wall includes multiple alternating sliding surfaces and transmission surfaces. The sliding surfaces are located at the axial ends of the magnetic column and can apply a resisting force to the magnetic column in the opposite direction to the repulsive force. The transmission surfaces are connected to the sliding surfaces.

[0009] When the magnetic column rotates relative to the sliding surface in the first direction, the axial abutment force applied by the sliding surface to the magnetic column decreases, and the part of the magnetic column extending out of the support becomes longer. When the magnetic column moves to the transmission surface, the transmission surface is located to the side of the magnetic column and forms an abutment with the magnetic column.

[0010] When the magnetic column rotates relative to the sliding surface in the second direction, the contact force exerted by the sliding surface on the magnetic column increases, and the portion of the magnetic column extending out of the support becomes shorter. When the magnetic column moves to the transmission surface, the transmission surface is located at the axial end of the magnetic column, and the magnetic column can pass over the transmission surface, failing to form effective contact with it. The second direction is opposite to the first direction.

[0011] The transmission unit is mounted on the bracket and is used for power input or power output of the second rotating component.

[0012] Based on the unidirectional transmission structure provided in the first aspect, the unidirectional transmission structure drives the extension and retraction of the magnetic column through the repulsive force of the magnetic ring and the magnetic column, combined with the design of the sliding surface of the circumferential groove wall of the first rotating component and the transmission surface, thereby achieving unidirectional power control. When the magnetic column rotates relative to the sliding surface along the first direction, the magnetic column extends outward under the repulsive force and abuts against the transmission surface, forming a rigid transmission. When the magnetic column rotates relative to the sliding surface along the second direction, the sliding surface forces the magnetic column to retract towards the magnetic ring, achieving free-spinning sliding. As can be seen from the above, the unidirectional transmission structure provided in this application can only provide unidirectional power and is suitable for scenarios such as anti-reverse and unidirectional clutch, and can be applied in multiple fields such as transportation, new energy, medical care, and robotics.

[0013] In one possible design, there are multiple magnetic pillars, which are evenly arranged along the outer periphery of the magnetic ring.

[0014] Based on the unidirectional transmission structure provided by this embodiment, during transmission, multiple magnetic pillars simultaneously abut against the transmission surface, distributing the total torque to multiple contact points, thus preventing individual magnetic pillars from wearing or failing due to local overload. Furthermore, the sequential contact of multiple magnetic pillars with the transmission surface ensures continuous power transmission, avoiding pulsed torque fluctuations caused by single-point transmission.

[0015] In one possible design, the sliding surface includes a first plane and a second plane that are connected.

[0016] The first plane is an inclined plane, and along the direction from the first plane to the second plane, the distance between each point on the first plane and the center of the magnetic ring increases. The second plane is perpendicular to the axis of the magnetic column.

[0017] Based on the unidirectional transmission structure provided by this embodiment, when the magnetic column slides from the first plane to the second plane, the contact force between the first plane and the magnetic column decreases, and the portion of the magnetic column extending out of the support becomes longer under the action of repulsive force. This provides a strong condition for the circumferential contact between the magnetic column and the transmission surface. The second plane is perpendicular to the axis of the magnetic column, so that the second plane is completely located at the axial end of the magnetic column, which can play a better axial positioning role for the magnetic column, preventing the magnetic column from running out of the support under the action of repulsive force, and providing a strong condition for the circumferential contact between the magnetic column and the transmission surface.

[0018] In one possible design, the transmission surface is a plane, and the transmission surface is perpendicular to the second plane.

[0019] Based on the unidirectional transmission structure provided by this embodiment, the transmission surface is a plane perpendicular to the second plane. Thus, when the magnetic column rotates from the sliding surface toward the transmission surface, the transmission surface can effectively abut against the magnetic column in the circumferential direction, thereby transmitting power. When the magnetic column rotates in the opposite direction, since the transmission surface is a plane perpendicular to the second plane, the magnetic column can quickly pass over the transmission surface and slide to the next sliding surface, achieving free rotation. Furthermore, the transmission surface is planar, making machining relatively simple.

[0020] In one possible design, the transmission unit is a connection hole set in the bracket, with a magnetic ring surrounding the connection hole, which is used for fixed connection with the rotating shaft to input or output power.

[0021] Based on the unidirectional transmission structure provided by this embodiment, the transmission part is a connecting hole provided in the bracket, with a magnetic ring surrounding the connecting hole, which is used for fixed connection with the rotating shaft. Thus, the second rotating assembly can be connected to an external device with a rotating shaft for unidirectional transmission, and has the characteristics of a compact and simple structure.

[0022] In one possible design, the bracket includes a main body and an extension section. The main body is used to mount the magnetic ring and magnetic post. The extension section is located on the side of the main body away from the first rotating member, and the transmission section is fixedly connected to the extension section for transmitting power.

[0023] Based on the unidirectional transmission structure provided in this embodiment, an extension portion is provided on the side of the support body away from the first rotating member, and a transmission portion is provided on the extension portion. In this way, the transmission portion on the extension portion can be connected to external gears, rollers, etc., to output power outward or input power inward. Thus, the overall volume increase of the second rotating assembly is relatively small, and it features a compact structure and ease of implementation.

[0024] Secondly, based on the same inventive concept, this application also provides an electric operating device for a reclosing circuit breaker, which includes a motor and a one-way transmission structure.

[0025] The motor is a bidirectional rotating motor. The torque output when the motor rotates in the forward direction is the forward torque, and the torque output when the motor rotates in the reverse direction is the reverse torque. The unidirectional transmission structure is any of the above-mentioned unidirectional transmission structures, and is used to transmit the forward torque.

[0026] The electric operating device provided in the second aspect of this application includes any of the aforementioned one-way transmission structures, and therefore possesses the beneficial effects of any of the aforementioned one-way transmission structures, which will not be described in detail here.

[0027] In one possible design, the motor includes an output shaft. A first rotating element is a gear, which is fitted onto the output shaft with a clearance fit. A transmission part is a connecting hole, with a magnetic ring surrounding it. The transmission part is fixedly connected to the output shaft, thereby inputting power.

[0028] Based on the electric operating device provided in this embodiment, when the motor rotates in the forward direction, the motor can drive the second rotating component to rotate in the forward direction. The magnetic column of the second rotating component can drive the first gear to rotate through the transmission surface of the first gear, thereby outputting power to the outside. When the motor rotates in the reverse direction, since the magnetic column of the second rotating component cannot form an effective circumferential contact with the transmission surface of the first gear, it cannot output power to the outside, thereby avoiding damage to the circuit breaker body.

[0029] In one possible design, the output shaft comprises a first section, a second section, and a third section arranged coaxially. The first section is the section of the output shaft closest to the motor housing, and the second section is located between the first and third sections. The radial dimension of the third section is less than or equal to the radial dimension of the second section, while the radial dimension of the first section is the largest.

[0030] A step is formed between the first and second sections. The first rotating component is in clearance fit with the second section and is axially positioned by the step.

[0031] The outer periphery of the third section is provided with a positioning surface. The shape of the connecting hole is adapted to the shape of the third section. The bracket is fitted onto the outer periphery of the third section through the connecting hole and is fixedly connected to the third section.

[0032] Based on the electric operating device provided in this embodiment, the first segment has the largest radial dimension, and a step is formed between the first and second segments. The first rotating component is clearance-fitted with the second segment and axially positioned by the step. This allows for a clearance fit between the first rotating component and the output shaft, ensuring that the first rotating component is not driven by the output shaft when it rotates. Furthermore, the step between the first and second segments provides support for the first rotating component, preventing significant friction between the first rotating component and the motor housing during rotation. Additionally, the design of the positioning surface on the outer periphery of the third segment facilitates synchronous transmission of the output shaft to the support.

[0033] In one possible design, the second rotating component also includes a baffle. The baffle is located at the end of the magnetic ring away from the first rotating component, covers the magnetic ring, and is fixedly connected to the output shaft by fasteners.

[0034] Based on the electric operating device provided by this embodiment, when the motor drives the second rotating component to rotate, the magnetic ring will not fall off the bracket due to vibration, thus improving the reliability of the operation of the second rotating component. Attached Figure Description

[0035] Figure 1This is a schematic diagram of a unidirectional transmission structure provided in an embodiment of this application.

[0036] Figure 2 for Figure 1 Exploded view.

[0037] Figure 3 for Figure 1 A schematic diagram of the structure of the first rotating component.

[0038] Figure 4 This is a schematic diagram of another second rotating assembly that conceals the magnetic ring and magnetic column, provided as an embodiment of this application.

[0039] Figure 5 To and Figure 4 The diagram shows a structural schematic of a first rotating component used in conjunction with the second rotating assembly.

[0040] Figure 6 This is a schematic diagram of the structure of an electric operating device for a reclosing circuit breaker provided in an embodiment of this application.

[0041] Figure 7 for Figure 6 Exploded view.

[0042] Figure 8 This is a schematic diagram of a reclosing circuit breaker provided in an embodiment of this application.

[0043] The attached figures are labeled as follows:

[0044] 1. Electrically operated device; 2. Circuit breaker body; 21. Handle;

[0045] 11. Motor; 111. Output shaft; 1111. First section; 1112. Second section; 1113. Third section; 11131. Positioning plane;

[0046] 12. One-way transmission structure; 121. First rotating component; 1211. First mounting hole; 1212. First mounting groove; 12121. Sliding surface; 12122. Transmission surface;

[0047] 122. Second rotating assembly; 1221. Bracket; 1222. Magnetic ring; 1223. Magnetic column; 1224. Transmission part; 1125. Baffle; 1226. Fastener; 1221A. Body part; 1221B. Extension part;

[0048] 13. Gear transmission assembly; 131. First gear; 132. Second gear; 133. Crank arm. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion.

[0051] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0053] In the description of this application, unless otherwise stated, "multiple" means two or more (including two).

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by spacers, screws, bolts, or other spacers. A physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] The present application will be described in detail below with reference to the accompanying drawings.

[0056] Figure 1 This is a schematic diagram of a unidirectional transmission structure 12 provided in an embodiment of this application. Figure 2 for Figure 1 Explosion diagram, Figure 3 for Figure 1 A schematic diagram of the structure of the first rotating component 121.

[0057] Please refer to Figure 1 The unidirectional transmission structure 12 provided in this application includes a first rotating member 121 and a second rotating assembly 122.

[0058] Please refer to Figure 2 The first rotating member 121 is provided with a first mounting hole 1211 and a first mounting groove 1212. The first mounting hole 1211 is used to cooperate with the mounting shaft so that the first rotating member 121 can rotate around the mounting shaft. The first mounting groove 1212 is opened on one side of the first rotating member 121 and is used to install the second rotating assembly 122.

[0059] The second rotating assembly 122 includes a bracket 1221, a magnetic ring 1222, a magnetic column 1223, and a transmission part 1224.

[0060] The magnetic ring 1222 and the magnetic column 1223 are mounted by the bracket 1221. The magnetic ring 1222 and the magnetic column 1223 are like poles and repel each other. The magnetic ring 1222 is coaxial with the first rotating member 121. The magnetic column 1223 is located on the outer periphery of the magnetic ring 1222. The axis of the magnetic column 1223 points to the center of the magnetic ring 1222. The magnetic column 1223 can move back and forth along its own axis. Under the action of the repulsive force of the magnetic ring 1222, the end of the magnetic column 1223 protrudes from the bracket 1221 and cooperates with the circumferential groove wall of the first mounting groove 1212.

[0061] Please combine Figures 1 to 3 The circumferential groove wall includes multiple alternating sliding surfaces 12121 and transmission surfaces 12122. The sliding surface 12121 is located at the axial end of the magnetic column 1223 and can apply a resisting force opposite to the repulsive force to the magnetic column 1223. The transmission surface 12122 is connected to the sliding surface 12121.

[0062] When the magnetic column 1223 rotates relative to the sliding surface 12121 in the first direction, the axial abutment force applied by the sliding surface 12121 to the magnetic column 1223 decreases, and the portion of the magnetic column 1223 extending out of the bracket 1221 becomes longer. When the magnetic column 1223 moves to the transmission surface 12122, the transmission surface 12122 is located on the side of the magnetic column 1223 and forms an abutment with the magnetic column 1223.

[0063] When the magnetic column 1223 rotates relative to the sliding surface 12121 in the second direction, the abutting force exerted by the sliding surface 12121 on the magnetic column 1223 increases, and the portion of the magnetic column 1223 extending out of the support 1221 becomes shorter. When the magnetic column 1223 moves to the transmission surface 12122, the transmission surface 12122 is located at the axial end of the magnetic column 1223, and the magnetic column 1223 can pass over the transmission surface 12122, failing to form effective contact with the transmission surface 12122. The second direction is opposite to the first direction.

[0064] The transmission unit 1224 is mounted on the bracket 1221 and is used for power input or power output of the second rotating assembly 122.

[0065] In this application, the magnetic ring 1222 and magnetic pillar 1223 can be made of permanent magnets. Permanent magnets are simple, reliable, and maintenance-free. The material of the permanent magnet can be high-strength permanent magnets such as neodymium iron boron or samarium cobalt. The magnetic ring 1222 needs to provide a uniform magnetic field in the circumferential direction so that the repulsive force on all magnetic pillars 1223 is consistent, avoiding transmission jamming due to local magnetic field strength differences. A hollow cylindrical magnetic ring 1222 can naturally meet this requirement, but other shapes (such as discrete magnetic blocks in a ring array) need to achieve an equivalent uniform field through arrangement.

[0066] There are three core functional requirements for the magnetic column 1223: First, smooth axial movement. The magnetic column 1223 must slide freely along its own axis and match the corresponding magnetic column mounting hole on the bracket 1221 to avoid jamming. Second, magnetic field uniformity. The shape of the magnetic column 1223 must be compatible with the magnetic field distribution of the magnetic ring 1222, so that the direction of repulsion is consistent with the direction of movement. Third, contact surface compatibility. The end of the magnetic column 1223 must effectively cooperate with the sliding surface 12121 / transmission surface 12122 to ensure a reasonable distribution of contact stress during transmission.

[0067] While meeting the above core functional requirements, the shape of the magnetic column 1223 does not need to be strictly limited to a cylinder, such as a square magnetic column, a frustum-shaped magnetic column, etc.

[0068] The core functional requirements of the bracket 1221 are threefold: First, structural load-bearing. It fixes the magnetic ring 1222 and the magnetic column 1223, bearing the torque and magnetic repulsion during transmission. Second, guiding function. It provides a sliding track for the magnetic column 1223, ensuring that the magnetic column 1223 moves in a set direction. Third, fitting installation. It spatially matches the first mounting slot 1212 of the first rotating component 121, avoiding motion interference. While meeting the above core functional requirements, the shape of the bracket 1221 need not be strictly limited to a specific form. Figure 2 The cylindrical shape shown can be a polygon, square, or other irregular shape.

[0069] Furthermore, in this application, the first rotating component 121 can be a gear or other rotating components, such as a flywheel, a roller, etc.

[0070] Please continue to refer to this. Figures 1 to 3 The basic principle of the unidirectional transmission structure 12 provided in this application is as follows: the unidirectional transmission structure 12 drives the magnetic column 1223 to extend and retract through the same magnetic repulsion force between the magnetic ring 1222 and the magnetic column 1223, combined with the combined design of the sliding surface 12121 of the first rotating member 121 and the transmission surface 12122, thereby achieving unidirectional power control. When the magnetic column 1223 rotates relative to the sliding surface 12121 in the first direction, the magnetic column 1223 extends outward under the repulsive force and abuts against the transmission surface 12122, forming a rigid transmission. When the magnetic column 1223 rotates relative to the sliding surface 12121 in the second direction, the sliding surface 12121 forces the magnetic column 1223 to retract towards the magnetic ring 1222, achieving free-spinning sliding.

[0071] It is understood that, in one embodiment of this application, the first rotating member 121 is the driving member, and the second rotating assembly 122 is the driven member. When the first rotating member 121 rotates along the first direction, the transmission surface 12122 cannot abut against the magnetic column 1223, and the first rotating member 121 rotates freely. When the first rotating member 121 rotates along the second direction, the transmission surface 12122 abuts against the magnetic column 1223, and the first rotating member 121 drives the second rotating assembly 122 to rotate along the second direction, and the second rotating assembly 122 outputs power outward.

[0072] In another embodiment of this application, the first rotating member 121 is a driven member, and the second rotating assembly 122 is a driving member. When the second rotating assembly 122 rotates along the first direction, the magnetic column 1223 can abut against the transmission surface 12122, and the second rotating assembly 122 drives the first rotating member 121 to rotate along the first direction, and the first rotating member 121 outputs power outward. When the second rotating assembly 122 rotates along the second direction, the magnetic column 1223 cannot abut against the transmission surface 12122, and the second rotating assembly 122 rotates idly.

[0073] In summary, the unidirectional transmission structure 12 provided in this application has the following beneficial effects:

[0074] First, the unidirectional transmission structure 12 provided in this application can only provide unidirectional power, suitable for scenarios such as anti-reverse and unidirectional clutch, and can be applied in multiple fields such as transportation, new energy, medical care, and robotics. Second, the unidirectional transmission structure 12 provided in this application has no mechanical delay due to magnetic force, and the extension and retraction response time of the magnetic column 1223 is short. The transmission state switching is smooth, without the impact vibration of rigid engagement of traditional clutches, which can improve motion control accuracy. Third, the unidirectional transmission structure 12 does not rely on lubrication during operation, making it easy to maintain. It also has no easily damaged parts (such as springs and friction plates), reducing the risk of failure due to mechanical fatigue. Furthermore, it has no complex mechanical mating structure, making assembly relatively simple.

[0075] Please continue to refer to this. Figures 1 to 3 In some embodiments of this application, there are multiple magnetic pillars 1223, which are arranged along the outer circumference of the magnetic ring 1222.

[0076] In the unidirectional transmission structure 12, the purpose of setting multiple magnetic pillars 1223 is to improve the reliability, stability, and load-bearing capacity of the transmission through synergistic action. Specifically, during transmission, multiple magnetic pillars 1223 simultaneously abut against the transmission surface 12122, distributing the total torque to multiple contact points, thus preventing individual magnetic pillars 1223 from wearing out or failing due to local overload. Furthermore, the sequential contact of multiple magnetic pillars 1223 with the transmission surface 12122 ensures continuous power transmission and avoids pulsed torque fluctuations caused by single-point transmission.

[0077] For example, in some embodiments of this application, the number of magnetic pillars 1223 is three, and the three magnetic pillars 1223 are evenly distributed along the outer circumference of the magnetic ring 1222, with a central angle of 120° between two adjacent magnetic pillars 1223. In practical applications, an appropriate number of magnetic pillars 1223 can be selected according to the application environment, such as the size of the magnetic ring 1222 and the magnitude of the torque.

[0078] Please continue to refer to this. Figures 1 to 3 In some embodiments of this application, the sliding surface 12121 includes a first plane and a second plane connected together. The first plane is an inclined plane, and the distance between each point on the first plane and the center of the magnetic ring 1222 increases along the direction from the first plane to the second plane. The second plane is perpendicular to the axis of the magnetic column 1223.

[0079] Specifically, in this embodiment, the first plane is an inclined plane, and the distance between each point on the first plane and the center of the magnetic ring 1222 increases along the direction from the first plane to the second plane. Thus, when the magnetic post 1223 slides from the first plane to the second plane, the contact force between the first plane and the magnetic post 1223 decreases, and under the action of the repulsive force, the portion of the magnetic post 1223 extending out of the support 1221 becomes longer. This provides a strong condition for the circumferential contact between the magnetic post 1223 and the transmission surface 12122.

[0080] The second plane is perpendicular to the axis of the magnetic column 1223. In this way, the second plane is completely located at the axial end of the magnetic column 1223, which can play a good axial positioning role for the magnetic column 1223, preventing the magnetic column 1223 from running out of the bracket 1221 under the action of repulsive force, and providing a strong condition for the circumferential contact between the magnetic column 1223 and the transmission surface 12122.

[0081] Therefore, based on the unidirectional transmission structure 12 provided by this embodiment, the sliding surface 12121 adopts a combination of an inclined surface and a second plane perpendicular to the magnetic column 1223, which can provide a strong condition for the circumferential contact between the magnetic column 1223 and the transmission surface 12122, and at the same time has the characteristics of simple processing.

[0082] Please continue to refer to this. Figures 1 to 3 The transmission surface 12122 is a plane, and the transmission surface 12122 is perpendicular to the second plane.

[0083] Specifically, in some embodiments of this application, the transmission surface 12122 is a plane perpendicular to the second plane. Thus, when the magnetic column 1223 rotates from the sliding surface 12121 towards the transmission surface 12122, the transmission surface 12122 can effectively abut against the magnetic column 1223 in the circumferential direction, thereby transmitting power. When the magnetic column 1223 rotates in the opposite direction, since the transmission surface 12122 is a plane perpendicular to the second plane, the magnetic column 1223 can quickly pass over the transmission surface 12122 and slide to the next sliding surface 12121, achieving free rotation. Furthermore, the transmission surface 12122 is a plane, making its processing relatively simple.

[0084] For example, in some embodiments of this application, 12 sliding surfaces 12121 are uniformly arranged on the annular groove wall, and a transmission surface 12122 is provided between two adjacent sliding surfaces 12121. The central angle occupied by each sliding surface 12121 is 30°. In other embodiments of this application, the number of sliding surfaces 12121 and transmission surfaces 12122 on the annular groove wall may also be other numbers.

[0085] Please continue to refer to this. Figures 1 to 3 In other embodiments of this application, the first plane can also be a curved surface, and the contact force can be adjusted by changing the radius of curvature. For example, when the magnetic column 1223 rotates relative to the sliding surface 12121 in a first direction, the radius of curvature of the first plane increases, and the contact force decreases. When the magnetic column 1223 rotates relative to the sliding surface 12121 in a second direction, the radius of curvature of the first plane decreases, and the contact force increases.

[0086] Please continue to refer to this. Figures 1 to 3In some embodiments of this application, the transmission part 1224 is a connection hole provided in the bracket 1221, and the magnetic ring 1222 surrounds the connection hole. The connection hole is used to fix the connection with the rotating shaft to input or output power.

[0087] Specifically, in some embodiments of this application, if the device connected to the second rotating assembly 122 has a rotating shaft, then the power input portion of the second rotating assembly 122 can be formed in the central region of the bracket 1221, specifically, it can be a connecting hole. In this way, the rotating shaft of the external device can be fixedly connected to the second rotating assembly 122 through the connecting hole, and when the external device rotates, the second rotating assembly 122 can rotate under the drive of the external device. Alternatively, when the first rotating member 121 drives the second rotating assembly 122 to rotate unidirectionally, the second rotating assembly 122 can connect to the rotating shaft through the connecting hole, thereby outputting power to the external device.

[0088] As can be seen from the above, the unidirectional transmission structure 12 provided by this embodiment can be connected to an external device with a rotating shaft to perform unidirectional transmission, and has the characteristics of compact and simple composition.

[0089] Figure 4 This is a schematic diagram of another second rotating assembly that conceals the magnetic ring and magnetic column, provided as an embodiment of this application. Figure 5 To and Figure 4 The diagram shows a structural schematic of a first rotating component used in conjunction with the second rotating assembly.

[0090] Please combine Figure 3 and Figure 4 In some embodiments of this application, the bracket 1221 includes a body portion 1221A and an extension portion 1221B. The body portion 1221A is used to mount the magnetic ring 1222 and the magnetic post 1223. The extension portion 1221B is located on the side of the body portion 1221A away from the first rotating member 121. The transmission portion 1224 is fixedly connected to the extension portion 1221B and is used to transmit power.

[0091] For details, please refer to [link / reference]. Figures 3 to 5 If the second rotating component 122 also needs to be connected to larger transmission components such as gears and rollers other than the first rotating component 121, setting a connection hole in the middle area of ​​the bracket 1221 will undoubtedly greatly increase the volume of the unidirectional transmission structure 12.

[0092] In this case, an extension portion 1221B can be provided on the side of the main body 1221A of the bracket 1221 away from the first rotating member 121, and a transmission portion 1224 can be provided on the extension portion 1221B. The transmission portion 1224 provided on the extension portion 1221B can be connected to external gears, rollers, etc., thereby outputting power outward or inputting power inward. In this way, the overall volume of the second rotating assembly 122 increases only slightly.

[0093] As can be seen from the above, the unidirectional structure 12 provided by this embodiment can be connected to an external transmission device, such as a gear or a roller, through the second rotating component 122 to perform unidirectional transmission. It has the characteristics of compact structure, small size and easy implementation.

[0094] Reclosing circuit breakers are crucial protective electrical devices in low-voltage power distribution systems, serving to connect and protect circuits. Reclosing circuit breakers have both manual and electric operation modes. Electric operation allows for remote opening and closing without the need for on-site personnel. In electric operation, the motor is the power source for the reclosing circuit breaker's opening and closing actions. Under normal circumstances, the reclosing circuit breaker's operation is unidirectional; for example, the motor only needs to rotate clockwise to open and then close the circuit. If the motor rotates in reverse, the operating sequence of the reclosing circuit breaker will be incorrect, affecting its functionality.

[0095] The unidirectional transmission structure 12 of this application can be applied to reclosing circuit breakers. By utilizing the anti-reverse function of the unidirectional transmission structure 12, the torque of the motor when rotating in the forward direction can be used as the power source for the closing and opening of the reclosing circuit breaker. When the motor rotates in the reverse direction, it has no effect on the closing and opening of the reclosing circuit breaker.

[0096] Figure 6 This is a schematic diagram of the structure of an electrically operated device 1 for a reclosing circuit breaker provided in an embodiment of this application. Figure 7 for Figure 6 For the exploded view, please refer to... Figure 6 and Figure 7 The electric operating device 1 for the reclosing circuit breaker provided in this application includes a motor 11 and a one-way transmission structure 12. The motor 11 is a bidirectional rotating motor. When the motor 11 rotates in the forward direction, the torque output is a forward torque, and when the motor 11 rotates in the reverse direction, the torque output is a reverse torque.

[0097] The one-way transmission structure 12 is any of the one-way transmission structures provided in this application, and the one-way transmission structure 12 is used to transmit positive torque.

[0098] Based on the electric operating device 1 of the reclosing circuit breaker provided in this application, a one-way transmission structure 12 is integrated in the electric operating device 1, thus possessing the anti-reverse function of the one-way transmission structure 12, which can transmit positive torque and avoid the transmission of reverse torque, thereby correctly performing electric closing and opening of the reclosing circuit breaker and preventing the motor 11 from reversing and causing damage to the reclosing circuit breaker.

[0099] Furthermore, the electric operating device 1 of this application includes any of the aforementioned one-way transmission structures 12 provided in this application, and thus possesses the beneficial effects of any of the aforementioned one-way transmission structures 12, which will not be described in detail here.

[0100] It should be noted that, according to the specific structural design of the electric operating device 1, in some embodiments of this application, the forward direction is clockwise and the reverse direction is counterclockwise. In other embodiments of this application, the forward direction is counterclockwise and the reverse direction is clockwise.

[0101] Figure 8 This is a structural schematic diagram of a reclosing circuit breaker provided in an embodiment of this application. Please refer to it. Figure 7 and Figure 8 In one application example of this application, the reclosing circuit breaker includes a circuit breaker body 2 and an electric operating device 1. The circuit breaker body 2 integrates a mechanical operating mechanism, a contact system, and an arc-extinguishing system. The input end of the mechanical operating mechanism is a handle 21, and the output end of the mechanical operating mechanism acts on the contact system. The handle 21 can be reciprocated manually or electrically to control the contact system's contact and separation, thereby realizing the opening and closing of the circuit breaker body 2. The arc-extinguishing system is used to extinguish the arc generated during opening. The electric operating device 1 is located on one side of the circuit breaker body 2 and is connected to the handle 21 of the circuit breaker body 2. The handle 21 can be operated electrically.

[0102] Please continue to refer to this. Figure 7 and Figure 8 In one application example of this application, the electric operating device 1 includes a motor 11 and a gear transmission assembly 13. The gear transmission assembly 13 includes a first gear 131, a second gear 132, and a crank arm 133. The first gear 131 meshes with the second gear 132. One end of the crank arm 133 is hinged to the second gear 132, and the other end of the crank arm 133 is connected to the handle 21 of the circuit breaker body 2. When the first gear 131 rotates, the second gear 132 rotates accordingly. During the rotation of the second gear 132, the crank arm 133 reciprocates, thereby driving the handle 21 to reciprocate, thus realizing the closing and opening of the circuit breaker body 2. In this process, the crank arm 133 converts the rotation of the second gear 132 along a first plane into the rotation of the handle 21 along a second plane, where the first plane is perpendicular to the second plane.

[0103] Please combine Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 As one embodiment of this application, the first gear 131 can be used as the first rotating component 121 of the one-way transmission structure 12. The first gear 131 is provided with a first mounting hole 1211 and a first mounting groove 1212. The first gear 131 is sleeved on the output shaft 111 of the motor 11 through the first mounting hole 1211 and is clearance-fitted with the output shaft 111 of the motor 11. The support 1221 of the second rotating assembly 122 is provided with a connecting hole at its center. The connecting hole is adapted to the shape of the output shaft 111 of the motor 11. The rotation of the motor 11 can drive the second rotating assembly 122 to rotate.

[0104] During installation, the first gear 131 can be first fitted onto the output shaft 111 of the motor 11, and then the second rotating component 122 can be fitted onto the output shaft 111 of the motor 11. The second rotating component 122 is installed in the first mounting groove 1212 of the first gear 131, and the magnetic column 1223 of the second rotating component 122 is adapted to the annular groove wall of the first mounting groove 1212.

[0105] Thus, when the motor 11 rotates in the forward direction (clockwise), the motor 11 can drive the second rotating component 122 to rotate in the clockwise direction. The magnetic column 1223 of the second rotating component 122 can drive the first gear 131 to rotate clockwise through the transmission surface 12122 of the first gear 131, which in turn drives the second gear 132 to rotate counterclockwise. When the second gear 132 rotates counterclockwise in the first plane, it drives the handle 21 to rotate back and forth in the second plane through the crank arm 133, thereby achieving the operation effect of first opening the circuit breaker and then closing it.

[0106] When motor 11 rotates in the reverse direction (counterclockwise), it drives the second rotating assembly 122 to rotate counterclockwise. Since the magnetic column 1223 of the second rotating assembly 122 cannot form an effective circumferential contact with the transmission surface 12122 of the first gear 131, the second rotating assembly 122 can only slide freely and cannot drive the first gear 131 to move. Thus, the rotation of motor 11 has no effect on the circuit breaker body 2, avoiding damage to the circuit breaker body 2.

[0107] Please continue to refer to this. Figure 7 and Figure 8 It should be noted that, Figure 8 This is just one application example of a reclosing circuit breaker. In this example, the unidirectional transmission structure 12 is integrated with the first gear 131. The first gear 131 realizes the output of unidirectional torque, avoiding the damage to the circuit breaker body 2 caused by the reverse rotation of the motor 11.

[0108] Please continue to refer to this. Figure 7 and Figure 8 Based on the inventive concept of this application, the one-way transmission structure 12 can be disposed in any transmission link of the transmission chain between the motor 11 and the handle 21. For example, the one-way transmission structure 12 can also be integrated with the second gear 132, with the second gear 132 serving as the first rotating member 121. In this case, the structure of the second gear 132 can be referred to Figure 5 The structure shown, and the structure of the second rotating component 122 can be referenced. Figure 4 The structure shown is as follows. In this structure, the first gear 131 is directly fixedly connected to the motor 11, and the crank arm 133 can be hinged to the bracket 1221 of the second rotating assembly 122.

[0109] Thus, when the motor 11 rotates in the forward direction (clockwise), the motor 11 drives the second gear 132 to rotate counterclockwise through the first gear 131. During the rotation of the second gear 132, the transmission surface 12122 abuts against the magnetic column, thereby driving the bracket 1221 to rotate counterclockwise through 1223. When the bracket 1221 rotates counterclockwise in a circular motion on the first plane, it drives the handle 21 to reciprocate on the second plane through the crank arm 133, thereby achieving the operation effect of first opening the circuit breaker and then closing it.

[0110] When motor 11 rotates in the reverse direction (counterclockwise), motor 11 drives second gear 132 to rotate clockwise via first gear 131. During the rotation of second gear 132, the transmission surface 12122 cannot effectively contact the magnetic column, and second gear 132 spins freely, unable to drive bracket 1221 to rotate. In this way, the rotation of motor 11 has no effect on circuit breaker body 2, avoiding damage to circuit breaker body 2.

[0111] It should also be noted that the specific structure of the electric operating device 1 in this application is not limited to... Figure 8 The structure shown can have various variations in the gear transmission assembly 13 depending on the application. Furthermore, the electric operating device 1 provided in this application is applicable not only to the electric reclosing operation of molded case circuit breakers, but also to the electric reclosing operation of miniature circuit breakers and 1U circuit breakers.

[0112] Please continue to refer to this. Figure 7In one embodiment of this application, the output shaft 111 includes a first segment 1111, a second segment 1112, and a third segment 1113 coaxially arranged. The first segment 1111 is the segment of the output shaft 111 closest to the motor housing, and the second segment 1112 is located between the first segment 1111 and the third segment 1113. The radial dimension of the third segment 1113 is less than or equal to the radial dimension of the second segment 1112, and the radial dimension of the first segment 1111 is the largest. A step is formed between the first segment 1111 and the second segment 1112, and the first rotating member 121 is clearance-fitted with the second segment 1112 and is axially positioned by the step.

[0113] The outer periphery of the third segment 1113 is provided with a positioning surface 11131. The shape of the connecting hole is adapted to the shape of the second segment 1112. The bracket 1221 is sleeved on the outer periphery of the third segment 1113 through the connecting hole and is fixedly connected to the third segment 1113.

[0114] In this embodiment, the first segment 1111 has the largest radial dimension. A step is formed between the first segment 1111 and the second segment 1112. The first rotating member 121 is clearance-fitted with the second segment 1112 and is axially positioned by the step. This allows for a clearance fit between the first rotating member 121 and the output shaft 111, so the first rotating member 121 is not driven by the output shaft 111 when it rotates. Furthermore, the step between the first segment 1111 and the second segment 1112 provides support for the first rotating member 121, thus preventing significant friction between the first rotating member 121 and the motor housing during rotation. In addition, the design of the positioning surface 11131 on the outer periphery of the third segment 1113 facilitates synchronous transmission between the output shaft 111 and the bracket 1221.

[0115] In summary, through the structural design of the output shaft 111, this application not only enables the first rotating component 121 and the second rotating component 122 to be installed through the output shaft 111, but also ensures that they maintain a correct transmission relationship. The overall structural design is reasonable and the layout is compact.

[0116] Please combine Figure 7 and Figure 8 In some embodiments of this application, the second rotating assembly 122 further includes a baffle 1125. The baffle 1125 is located at the end of the magnetic ring 1222 away from the first rotating member 121, the baffle 1125 covers the magnetic ring 1222, and the baffle 1125 is fixedly connected to the output shaft 111 by a fastener 1226.

[0117] In this embodiment, the baffle 1125 covers the magnetic ring 1222, and the baffle 1125 is fixedly connected to the output shaft 111 by the fastener 1226. In this way, when the motor 11 drives the second rotating assembly 122 to rotate, the magnetic ring 1222 will not fall off the bracket 1221 due to vibration, thus improving the reliability of the operation of the second rotating assembly 122.

[0118] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0119] The above-described embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A unidirectional transmission structure, characterized in that, Includes a first rotating component and a second rotating assembly; The first rotating member is provided with a first mounting hole and a first mounting groove. The first mounting hole is used to cooperate with the mounting shaft so that the first rotating member can rotate around the mounting shaft. The first mounting groove is opened on one side of the first rotating member and is used to install the second rotating assembly. The second rotating assembly includes a bracket, a magnetic ring, a magnetic column, and a transmission part; the magnetic ring and the magnetic column are mounted through the bracket, the magnetic ring and the magnetic column are like poles and repel each other, the magnetic ring is coaxial with the first rotating component, the magnetic column is located on the outer periphery of the magnetic ring, the axis of the magnetic column points to the center of the magnetic ring, the magnetic column can reciprocate along its own axis, and under the action of the repulsive force of the magnetic ring, the end of the magnetic column protrudes from the bracket and cooperates with the circumferential groove wall of the first mounting groove; The circumferential groove wall includes multiple alternating sliding surfaces and transmission surfaces; the sliding surfaces are located at the axial ends of the magnetic column and can apply a resisting force to the magnetic column in the opposite direction to the repulsive force; the transmission surfaces are connected to the sliding surfaces; When the magnetic column rotates relative to the sliding surface in the first direction, the axial abutment force applied by the sliding surface to the magnetic column decreases, and the portion of the magnetic column extending out of the bracket becomes longer. When the magnetic column moves to the transmission surface, the transmission surface is located to the side of the magnetic column and forms an abutment with the magnetic column. When the magnetic column rotates relative to the sliding surface in the second direction, the abutting force applied by the sliding surface to the magnetic column increases, and the portion of the magnetic column extending out of the bracket becomes shorter. When the magnetic column moves to the transmission surface, the transmission surface is located at the axial end of the magnetic column, and the magnetic column can pass over the transmission surface and cannot form an effective abutment with the transmission surface; the second direction is opposite to the first direction. The transmission unit is disposed on the bracket and is used for power input or power output of the second rotating component.

2. The unidirectional transmission structure according to claim 1, characterized in that, The number of magnetic pillars is multiple, and the multiple magnetic pillars are evenly arranged along the outer periphery of the magnetic ring.

3. The unidirectional transmission structure according to claim 1, characterized in that, The sliding surface includes a first plane and a second plane that are connected to each other; The first plane is an inclined plane, and along the direction from the first plane to the second plane, the distance between each point on the first plane and the center of the magnetic ring increases; the second plane is perpendicular to the axis of the magnetic column.

4. The unidirectional transmission structure according to claim 3, characterized in that, The transmission surface is a plane, and the transmission surface is perpendicular to the second plane.

5. The unidirectional transmission structure according to any one of claims 1 to 4, characterized in that, The transmission part is a connection hole provided in the bracket, and the magnetic ring surrounds the connection hole. The connection hole is used to fix the connection with the rotating shaft to input or output power.

6. The unidirectional transmission structure according to any one of claims 1 to 4, characterized in that, The bracket includes a main body and an extension part. The main body is used to install the magnetic ring and the magnetic column. The extension part is located on the side of the main body away from the first rotating member. The transmission part is fixedly connected to the extension part and is used to transmit power.

7. An electrically operated device for a reclosing circuit breaker, characterized in that, Includes the motor and unidirectional drive structure; The motor is a bidirectional rotating motor. The torque output when the motor rotates in the forward direction is the forward torque, and the torque output when the motor rotates in the reverse direction is the reverse torque. The unidirectional transmission structure is the unidirectional transmission structure according to any one of claims 1 to 4, and the unidirectional transmission structure is used to transmit positive torque.

8. The electrically operated device for a reclosing circuit breaker according to claim 7, characterized in that, The motor includes an output shaft; The first rotating component is a gear, and the first rotating component is sleeved on the output shaft and has a clearance fit with the output shaft; The transmission part is a connecting hole, the magnetic ring is arranged around the transmission part, and the transmission part is fixedly connected to the output shaft, thereby inputting power.

9. The electrically operated device for a reclosing circuit breaker according to claim 8, characterized in that, The output shaft includes a first section, a second section, and a third section arranged coaxially. The first section is the section of the output shaft close to the motor housing, and the second section is located between the first section and the third section. The radial dimension of the third section is less than or equal to the radial dimension of the second section, and the radial dimension of the first section is the largest. A step is formed between the first segment and the second segment, the first rotating component is clearance-fitted with the second segment, and is axially positioned by the step; The outer periphery of the third segment is provided with a positioning surface; the shape of the connecting hole is adapted to the shape of the third segment, and the bracket is sleeved on the outer periphery of the third segment through the connecting hole and fixedly connected to the third segment.

10. The electrically operated device for a reclosing circuit breaker according to claim 8, characterized in that, The second rotating component further includes a baffle plate; the baffle plate is located at the end of the magnetic ring away from the first rotating component, the baffle plate covers the magnetic ring, and the baffle plate is fixedly connected to the output shaft by fasteners.

Images