Reclosing mechanism and circuit breaker

Abstract

The application provides a reclosing mechanism and a circuit breaker. The reclosing mechanism comprises a manual mechanism, an electric mechanism, a transmission mechanism, a driving member, a transmission shaft, an elastic member arranged on the transmission shaft and a sliding plate. The transmission shaft is in power connection with the sliding plate and is used for driving the sliding plate to move between a first position and a second position. The transmission shaft is fixedly connected with the manual mechanism. The driving member is in power connection with the electric mechanism. The driving member is provided with a shaft hole. The transmission shaft is at least partially embedded in the shaft hole and can rotate along the axis of the shaft hole. The hole wall of the shaft hole has a thrust surface extending along the radial direction of the driving member. When the elastic member contacts the thrust surface, the electric mechanism drives the driving member to rotate in a preset direction. When the transmission mechanism is driven to rotate in the preset direction by the manual mechanism, the elastic member is away from the thrust surface. The application aims to solve the technical problem of the complicated structure of the reclosing mechanism in the prior art.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, specifically to a reclosing mechanism and a circuit breaker. Background Technology

[0002] Reclosing circuit breakers are widely used in power transmission and distribution circuits, serving to control and protect the circuits. The reclosing mechanism of a reclosing circuit breaker has both electric and manual mechanisms. Electric operation primarily involves controlling and protecting the circuit breaker remotely via signals when no manual intervention is required. Therefore, the reclosing mechanism is typically designed as an integrated structure combining the manual and electric mechanisms.

[0003] However, in the existing technology, the reclosing mechanism has a complex structure. Summary of the Invention

[0004] This application provides a reclosing mechanism and a circuit breaker, aiming to solve the technical problem of the complex structure of the reclosing mechanism in the prior art.

[0005] In a first aspect, this application provides a reclosing mechanism, comprising:

[0006] Manual mechanism;

[0007] Electric mechanism;

[0008] A skateboard, having a first position and a second position; and

[0009] A transmission mechanism includes a drive component, a drive shaft, a spring component disposed on the drive shaft, and a slide plate; the drive shaft is poweredly connected to the slide plate and is used to drive the slide plate to move between a first position and a second position; the drive shaft is fixedly connected to the manual mechanism; the drive component is poweredly connected to the electric mechanism.

[0010] The drive member has a shaft hole, the drive shaft is at least partially embedded in the shaft hole and can rotate within the shaft hole along its axis; the wall of the shaft hole has a thrust surface extending in the radial direction of the drive member.

[0011] When the elastic member contacts the thrust surface, the electric mechanism drives the driving member to rotate in a preset direction, thereby driving the transmission mechanism to rotate.

[0012] When the transmission mechanism is rotated along the preset direction by the manual mechanism, the elastic element moves away from the thrust surface.

[0013] Optionally, the hole wall of the shaft hole has at least two circumferential curved surfaces and at least two thrust surfaces; the at least two circumferential curved surfaces are staggered in the circumferential direction of the driving member, and the at least two thrust surfaces are spaced apart in the circumferential direction of the driving member, and adjacent two circumferential curved surfaces are transitioned by one thrust surface.

[0014] The elastic element abuts against any circumferential curved surface.

[0015] Optionally, there are at least two elastic elements, and the number of elastic elements is the same as the number of thrust surfaces. At least two elastic elements are arranged at circumferential intervals along the transmission shaft; each circumferential curved surface abuts against one of the elastic elements.

[0016] Optionally, the distance between the circumferential curved surface and the centroid of the driving member first decreases and then increases in the preset direction;

[0017] Furthermore, at the point where the distance between the circumferential curved surface and the centroid of the driving member is minimized, the transmission shaft abuts against the circumferential curved surface.

[0018] Optionally, the elastic element includes a spring and a limiting block, the spring being connected to the drive shaft and the limiting block abutting against the wall of the shaft hole.

[0019] Optionally, the length of the spring is at its maximum value when the limiting block abuts against the thrust surface.

[0020] Optionally, the transmission mechanism further includes a rotary seat, a rotating shaft, and a rotating body, wherein the rotary seat is fixed on the section of the transmission shaft that extends out of the shaft hole;

[0021] The rotating shaft is eccentrically mounted on the rotating base, and the rotating body is rotatably mounted on the rotating shaft; the sliding plate is provided with a sliding groove, and the rotating body is disposed in the sliding groove. When the rotating body rotates around the transmission shaft in the sliding groove, it can push the sliding plate to move between the first position and the second position.

[0022] Optionally, the reclosing mechanism further includes a first bracket, with the electric mechanism and the manual mechanism respectively disposed on both sides of the thickness direction of the first bracket; the sliding plate and the manual mechanism are disposed on the same side of the thickness direction of the first bracket, and the sliding plate is movably connected to the first bracket, with the moving direction of the sliding plate parallel to the height direction of the first bracket.

[0023] Optionally, the first bracket is provided with a contact, and the rotary seat is provided with a first boss and a second boss that are spaced apart circumferentially and can contact the contact; wherein, when the slide plate is in the first position, the first boss contacts the contact; and when the slide plate is in the second position, the second boss contacts the contact.

[0024] Secondly, embodiments of this application also propose a circuit breaker, which includes the reclosing mechanism as described above.

[0025] In the technical solution of this application embodiment, when it is necessary to switch the position of the slide, the transmission shaft can be driven in a preset direction by a manual mechanism to move the slide between the first position and the second position. The elastic member on the transmission shaft is away from the pushing surface, so the operation by the manual mechanism will not affect the electric mechanism. When the transmission shaft is driven by the electric mechanism, although the elastic member is away from the pushing surface, the elastic member can contact the pushing surface because the driving member rotates in a preset direction. The driving member then applies force to the elastic member, drives the transmission shaft to rotate, and thus drives the slide to move between the first position and the second position. Firstly, in this embodiment, a clutch mechanism is not required to achieve the purpose of the manual mechanism and the electric mechanism driving the slide plate to move between the first position and the second position respectively, thereby reducing the complexity of the reclosing mechanism. Secondly, compared to the clutch mechanism requiring additional space in the reclosing mechanism, this application provides a spring member on the built-in section of the transmission shaft and provides a push surface that can contact the spring member on the hole wall of the shaft hole of the drive member, thus eliminating the need for additional space and achieving the technical objective of high space utilization. Thirdly, in the prior art, both the manual mechanism and the electric mechanism need to drive the transmission mechanism through the clutch mechanism to transmit power, while in this application, both the manual mechanism and the electric mechanism can directly drive the transmission mechanism to move the slide plate, resulting in higher transmission efficiency and lower energy consumption. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the reclosing mechanism provided in the embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the drive component in the reclosing mechanism provided in the embodiments of this application;

[0029] Figure 3This is a schematic diagram of the drive component and transmission shaft in the reclosing mechanism provided in the embodiments of this application;

[0030] Figure 4 This is a schematic diagram showing the structure of the transmission mechanism and the electric mechanism in the reclosing mechanism provided in the embodiments of this application;

[0031] Figure 5 This is a schematic diagram showing the sliding plate of the reclosing mechanism provided in this embodiment in the first position;

[0032] Figure 6 This is a schematic diagram showing the sliding plate of the reclosing mechanism provided in this embodiment in the second position;

[0033] Figure 7 This is a schematic diagram showing the sliding plate of the reclosing mechanism provided in this embodiment of the application between a first position and a second position;

[0034] Figure 8 A schematic diagram of the distributed structure of a circuit breaker with the reclosing mechanism provided in the embodiments of this application;

[0035] Figure 9 This is a schematic diagram of the modular layout of a circuit breaker with the reclosing mechanism provided in the embodiments of this application.

[0036] List of reference numerals

[0037]

[0038] Detailed Implementation

[0039] 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 the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0042] A reclosing circuit breaker includes a reclosing mechanism and a handle. The reclosing mechanism drives the handle to switch the circuit breaker's operating state. The reclosing mechanism includes a manual mechanism and an electric mechanism. Typically, the manual and electric mechanisms communicate via a clutch mechanism that changes the position of a sliding plate, causing the plate to move the handle and switch the circuit breaker's operating state. However, the clutch mechanism's complex structure, low space utilization, and low transmission efficiency result in technical shortcomings in the reclosing mechanism, including structural complexity, low space utilization, and low transmission efficiency.

[0043] To address the aforementioned technical shortcomings, such as Figure 1 As shown in the figure, this application proposes a reclosing mechanism, including a manual mechanism 4, an electric mechanism 2, and a transmission mechanism 3.

[0044] Among them, combined Figure 1 and Figure 4As shown, the transmission mechanism 3 includes a drive member 310, a transmission shaft 306, and a spring member and a sliding plate 304 disposed on the transmission shaft 306. The transmission shaft 306 is poweredly connected to the sliding plate 304, and is used to drive the sliding plate 304 to move between a first position and a second position. The transmission shaft 306 is fixedly connected to the manual mechanism 4. The drive member 310 is poweredly connected to the electric mechanism 2.

[0045] Among them, such as Figure 2 and Figure 3 As shown, the drive member 310 is configured with a shaft hole 3103, the drive shaft 306 is at least partially embedded in the shaft hole 3103 and can rotate within the shaft hole 3103 along its axis; the hole wall of the shaft hole 3103 has a thrust surface 3102 extending in the radial direction of the drive member 310.

[0046] When the elastic member contacts the thrust surface 3102, the electric mechanism 2 drives the drive member 310 to rotate in a preset direction, thereby driving the transmission mechanism 3 to rotate.

[0047] When the manual mechanism 4 drives the transmission mechanism 3 to rotate in the preset direction, the elastic element moves away from the thrust surface 3102.

[0048] In the technical solution of this application embodiment, when it is necessary to switch the position of the slide plate 304, the manual mechanism 4 can drive the transmission shaft 306 in a preset direction to move the slide plate 304 between the first position and the second position. The elastic member on the transmission shaft 306 is away from the pushing surface, so the operation by the manual mechanism 4 will not affect the electric mechanism 2. When the transmission shaft 306 is driven by the electric mechanism 2, although the elastic member is away from the pushing surface 3102, the driving member 310 rotates in the preset direction, and the elastic member can contact the pushing surface. Then the driving member 310 applies force to the elastic member, drives the transmission shaft 306 to rotate, and then drives the slide plate 304 to move between the first position and the second position. Firstly, in this embodiment, a clutch mechanism is not required to achieve the purpose of the manual mechanism 4 and the electric mechanism 2 driving the slide plate 304 to move between the first and second positions, thereby reducing the complexity of the reclosing mechanism. Secondly, compared to the clutch mechanism requiring additional space in the reclosing mechanism, this application provides a spring member on the built-in section of the transmission shaft 306 and provides a push surface that can contact the spring member on the hole wall of the shaft hole 3103 of the drive member 310, thus eliminating the need for additional space and achieving high space utilization. Thirdly, in the prior art, both the manual mechanism 4 and the electric mechanism 2 need to drive the transmission mechanism 3 through the clutch mechanism for power transmission, while in this application, both the manual mechanism 4 and the electric mechanism 2 can directly drive the transmission mechanism 3 to move the slide plate 304, resulting in higher transmission efficiency and lower energy consumption.

[0049] It should be noted that the first and second positions of the sliding plate 304 correspond to different operating states of the circuit breaker. The sliding plate 304 is connected to the circuit breaker handle 103. When the sliding plate 304 moves in the first and second positions, the handle 103 moves with the sliding plate 304 to switch the operating state of the circuit breaker. The operating states of the circuit breaker include at least the open / re-trip state and the closed state. In the embodiment, when the sliding plate 304 is in the first position, the circuit breaker is in the closed state; when the sliding plate 304 is in the second position, the circuit breaker is in the open / re-trip state. It should be noted that the sliding plate 304 can also be in any free position between the first and second positions, in which case the circuit breaker can be in the tripped state.

[0050] It should be noted that the preset direction is understood as follows: when the driving member 310 rotates in the rotational direction, the thrust surface 3102 gradually approaches the elastic member. If the operator operates the manual mechanism 4 in the opposite direction of the preset direction, the elastic member will contact the thrust surface 3102, which will restrict the manual mechanism 4, making it impossible to correctly switch the operating state of the circuit breaker. Therefore, the preset direction is generally marked on the circuit breaker to guide the operator to perform the correct operation. In this embodiment, the preset direction is clockwise. However, the technical field can implement different structural designs according to requirements, setting the preset direction to counterclockwise.

[0051] In some embodiments, such as Figure 4 As shown, the electric mechanism 2 also includes a motor 201, a gear reducer 202, and a gear 203. The motor 201 drives the gear reducer 202 to rotate the gear 203. The driving member 310 is disc-shaped, and its outer edge is constructed with meshing teeth that mesh with the gear 203. The gear 203 meshes with the driving member 310, which can drive the driving member 310 to rotate in a preset direction. Alternatively, the electric mechanism 2 can also use a structure where the motor 201 drives the gear 203, which in turn drives the driving member 310. Of course, in order to achieve the rotational movement of the driving member 310, the driving member 310 can also be driven by a mechanism capable of rotation, such as the motor 201 driving a worm gear, which in turn drives the driving member 310 to rotate.

[0052] During assembly, the motor 201 and gear reducer 202 are vertically combined, with the motor 201 fixed to the housing of the gear reducer 202 by screws. The gear reducer 202 is mounted on a second bracket 205. The second bracket 205 is mounted on the circuit breaker housing 1.

[0053] In some embodiments, such as Figure 1 As shown, the manual mechanism 4 includes a hexagonal socket head cap screw 401, which is fixed to the drive shaft 306. By tightening the hexagonal socket head cap screw in a preset direction with a wrench, the slide plate 304 can be moved.

[0054] In this embodiment, when the manual mechanism 4 drives the transmission mechanism 3, the elastic element rotates with the transmission shaft 306, thus the elastic element can be at any position on the circumferential curved surface 3101. The electric mechanism 2 can only push the slide plate 304 in a preset direction when the elastic element abuts against the thrust surface 3102. When switching the state of the circuit breaker electrically, the electric mechanism 2 needs to drive the drive member 310 to rotate through a random angle so that the elastic element abuts against the thrust surface 3102. If the curvature of the circumferential curved surface 3101 is 360°, then the maximum value of the random angle is 360°, that is, the electric mechanism 2 needs to drive the drive member 310 to rotate at most one revolution to make the thrust surface 3102 contact the elastic element. If the curvature of the circumferential curved surface 3101 is 180°, then the maximum value of the random angle is 180°, that is, the electric mechanism 2 needs to drive the drive member 310 to rotate at most half a revolution to make the thrust surface 3102 contact the elastic element. Therefore, in order to reduce the maximum value of this random angle, in this embodiment of the application, the hole wall of the shaft hole 3103 has at least two circumferential curved surfaces 3101 and at least two thrust surfaces 3102. The at least two circumferential curved surfaces 3101 are staggered in the circumferential direction of the driving member 310, and the at least two thrust surfaces 3102 are spaced apart in the circumferential direction of the driving member 310, and adjacent two circumferential curved surfaces 3101 are transitioned by a thrust surface 3102; wherein, the elastic member abuts against any one of the circumferential curved surfaces 3101.

[0055] For example, such as Figure 2 As shown, there are two circumferential curved surfaces 3101, each with an arc of 180°. Therefore, the electric mechanism 2 only needs to drive the drive member 310 to rotate at most half a turn to bring the thrust surface 3102 into contact with the elastic member. For example, if there are three circumferential curved surfaces 3101, each with an arc of 120°, the electric drive mechanism only needs to drive the drive member 310 to rotate at most one-third of a turn to bring the thrust surface 3102 into contact with the elastic member. The structure of this embodiment effectively prevents excessive idling by the electric mechanism 2.

[0056] However, since the circumferential curved surfaces 3101 are staggered in the circumferential direction, the elastic element will abut against different circumferential curved surfaces 3101. Therefore, in order to improve the stability of the transmission shaft 306, the number of circumferential curved surfaces 3101 should not be too large. In this embodiment, there are two circumferential curved surfaces 3101 and two thrust surfaces 3102. That is, the elastic element will only undergo a sudden deformation once every half revolution driven by the manual mechanism 4, thereby improving the stability of the transmission shaft 306.

[0057] As an optional implementation of the above embodiments, to further improve the smoothness of transmission, at least two elastic members are provided, and the number of elastic members is consistent with the number of thrust surfaces 3102. At least two elastic members are spaced apart circumferentially along the transmission shaft 306; one elastic member abuts against each circumferential curved surface 3101. The uniform arrangement of the elastic members along the circumference of the transmission shaft 306, with each elastic member abutting against the circumferential curved surface 3101, supports the transmission shaft 306 within the shaft hole 3103. Furthermore, providing multiple elastic members facilitates the drive member 310 in rotating the transmission shaft 306.

[0058] For example, there are two circumferential curved surfaces 3101 and two elastic elements. The two elastic elements abut against different circumferential curved surfaces 3101. When the electric mechanism 2 drives the transmission shaft 306 to rotate, the two elastic elements simultaneously abut against the circumferentially spaced thrust surfaces 3102, so that the force of the driving element 310 is applied to the elastic elements through the thrust surfaces 3102, thereby causing the transmission shaft 306 to rotate and drive the slide plate 304 to move.

[0059] As an optional implementation of the above embodiments, the distance between the centroid of the circumferential curved surface 3101 and the driving member 310 first decreases and then increases in the preset direction; and at the point where the distance between the centroid of the circumferential curved surface 3101 and the driving member 310 is minimum, the transmission shaft 306 abuts against the circumferential curved surface 3101. In this structure, the transmission shaft 306 can contact the circumferential curved surface 3101, so that there is a supporting contact surface between the transmission shaft 306 and the driving member 310, so that the movement can be smooth when the reclosing mechanism switches the working state of the circuit breaker. Even if the distance between the centroid of the circumferential curved surface 3101 and the driving member 310 first decreases and then increases in the preset direction, the elastic member can abut against the circumferential curved surface 3101 at any position in the circumferential direction based on its own deformation. In the structure, at the point where the distance between the centroid of the circumferential curved surface 3101 and the driving member 310 is minimum, the compression of the elastic member is maximum.

[0060] In some embodiments, the distance between the circumferential curved surface 3101 and the centroid of the drive member 310 (the axis of the transmission shaft 306) can be reduced and then increased along a preset direction from the thrust surface 3102 to the next thrust surface 3102. As a result, when the manual mechanism 4 drives the transmission mechanism 3, the compression amount of the elastic member will adaptively decrease and then increase according to the position of the limit block 3063 on the drive member 310 until the limit block 3063 moves to the next thrust surface 3102. At this time, the elastic member is first compressed during the movement of the transmission shaft 306 and gradually tends to return to its original state, so that the elastic member is relatively gentle when it pops out of the limit block 3063. In some embodiments, the trend of the circumferential surface 3101 decreasing in distance from the centroid of the driving member 310 is greater than the trend of the circumferential surface 3101 increasing in distance from the centroid of the driving member 310, such that the distance from the starting end of the circumferential surface 3101 in the preset direction to the centroid of the driving member 310 is greater than the distance from the ending end of the circumferential surface 3101 in the preset direction to the centroid of the driving member 310.

[0061] As an optional implementation of the above embodiments, such as Figure 2 As shown, the elastic component includes a spring 3062 and a limiting block 3063. The spring 3062 is connected to the drive shaft 306, and the limiting block 3063 abuts against the wall of the shaft hole 3103 and can abut against the thrust surface 3102. The spring 3062 is fixed to the outer peripheral wall of the drive shaft 306. The limiting block 3063 may have a sleeve hole to be sleeved on the outside of the spring 3062. Alternatively, the limiting block 3063 may be embedded in the cavity of the spring 3062 and fixed to the spring 3062. The limiting block 3063 abuts against the wall of the shaft hole 3103, so that the drive shaft 306 and the driving component 310 can be rotatably engaged. When the manual mechanism 4 drives the drive shaft 306 to rotate in a preset direction, the limiting block 3063 slides circumferentially along the circumferential curved surface 3101, while the driving component 310 remains stationary. When the electric mechanism 2 drives the drive component 310 to rotate, if the limit block 3063 does not contact the thrust surface 3102, the transmission shaft 306 will not rotate until the thrust surface 3102 contacts the limit block 3063, thereby driving the transmission shaft 306 to rotate.

[0062] In some embodiments, such as Figure 3 As shown, a third bushing 3061 is fitted onto the drive shaft 306, and the third bushing 3061 is fastened to the drive shaft 306. A spring 3062 is fixed to the third bushing 3061.

[0063] In the specific implementation process, the function of the spring 3062 is to keep the limiting block 3063 close to the driving component 310 so as to maintain the smooth rotation of the transmission shaft 306 through the elastic deformation of the spring 3062.

[0064] In the structure of the drive component 310 with only one circumferential curved surface 3101, since the shaft hole 3103 has a thrust surface 3102 arranged in the radial direction, the circumferential curved surface 3101 has an abrupt change in the radial direction; therefore, when the drive shaft 306 is driven to rotate one revolution by the manual mechanism 4, the spring 3062 will pop out the limit block 3063 to press against the circumferential curved surface 3101.

[0065] Furthermore, in the structure of the drive component 310 having two or more circumferential curved surfaces 3101, since the circumferential curved surfaces 3101 are misaligned in the circumferential direction, when the drive shaft 306 is driven to rotate one revolution by the manual mechanism 4, the limiting block 3063 will have a discontinuous motion trajectory due to the misalignment of the circumferential curved surfaces 3101. Therefore, when the limiting block 3063 moves from one circumferential curved surface 3101 to another circumferential curved surface 3101, the spring 3062 will pop out the limiting block 3063 to abut against the other circumferential curved surface 3101, thus making the drive shaft 306 rotate smoothly and without obstruction in the shaft hole 3103 along the preset direction.

[0066] In this embodiment, the drive shaft 306 is assembled to the drive member 310 by the elastic force of the spring member, therefore, the spring 3062 is in a compressed state. The spring 3062 is normally in a compressed state when the limiting block 3063 abuts against the circumferential curved surface 3101, and its length is less than its normal length, so that when the circumferential curved surface 3101 changes abruptly, the limiting block 3063 will be ejected, thereby maintaining the smoothness of the movement of the drive shaft 306.

[0067] As an optional implementation of the above embodiments, the length of the spring 3062 is at its maximum value when the limiting block 3063 abuts against the thrust surface 3102. The thrust surface 3102 serves as both the force-applying surface for the electric mechanism 2 to drive the transmission shaft 306 to rotate and as a transitional structure for the circumferential curved surface 3101 during structural abrupt changes. Moreover, during the rotation of the transmission shaft 306 relative to the driving member 310, the limiting block 3063 is always ejected by the spring 3062 to abut against another circumferential curved surface 3101 due to the transitional setting of the thrust surface 3102. Therefore, the length of the spring 3062 is at its maximum value when the limiting block 3063 abuts against the thrust surface 3102. It should be noted that the maximum length of the spring 3062 means that the spring 3062 is in a compressed state, and its compression is at its minimum. In this state, the compression of spring 3062 is less than or equal to the compression of spring 3062 when the limit block 3063 is in other positions, and is closer to the original length of spring 3062.

[0068] In some embodiments, the distance between the circumferential curved surface 3101 and the centroid of the drive member 310 (the axis of the transmission shaft 306) can decrease along a preset direction from the thrust surface 3102 to the next thrust surface 3102. Consequently, the compression of the spring 3062 will adaptively increase from small to large according to the position of the limit block 3063 on the drive member 310 when the manual mechanism 4 drives the transmission mechanism 3, until the limit block 3063 moves to the next thrust surface 3102.

[0069] Alternatively, in some embodiments, the distance between the circumferential curved surface 3101 and the centroid of the driving member 310 (the axis of the transmission shaft 306) can be such that the distance from the thrust surface 3102 to the next thrust surface 3102 along a preset direction first decreases and then increases. Consequently, when the manual mechanism 4 drives the transmission mechanism 3, the compression of the spring 3062 will adaptively decrease and then increase according to the position of the limit block 3063 on the driving member 310 until the limit block 3063 moves to the next thrust surface 3102. At this time, the spring 3062 is first compressed during the movement of the transmission shaft 306 and gradually tends to recover its original length, making the spring 3062 relatively gentle when it pops out of the limit block 3063. In this embodiment, the trend of the circumferential surface 3101 decreasing in distance from the centroid of the driving member 310 is greater than the trend of the circumferential surface 3101 increasing in distance from the centroid of the driving member 310, such that the distance from the starting end of the circumferential surface 3101 in the preset direction to the centroid of the driving member 310 is greater than the distance from the ending end of the circumferential surface 3101 in the preset direction to the centroid of the driving member 310.

[0070] As an optional implementation of the above embodiments, such as Figure 1 As shown, the transmission mechanism 3 further includes a rotating base 301, a rotating shaft 302, and a rotating body 303. The rotating base 301 is fixed to the portion of the transmission shaft 306 that extends out of the shaft hole 3103. Generally, the rotating shaft is sleeved on the transmission shaft 306, and the two can be fixedly connected by welding, keying, or threading. The rotating shaft 302 is eccentrically disposed on the rotating base 301. That is, the rotating shaft 302 is disposed at a position on the rotating base 301 that is offset from the axis of the transmission shaft 306. The rotating body 303 is rotatably disposed on the rotating shaft 302. In some embodiments, the rotating body 303 can be a bearing. The rotating body 303 can also be a rotating part that is rotatably sleeved on the rotating base.

[0071] The slide plate 304 is provided with a groove, and the rotating body 303 is disposed in the groove. When the rotating body 303 rotates around the drive shaft 306 within the groove, it can push the slide plate 304 to move between the first position and the second position. When the drive shaft 306 drives the rotating seat 301 to rotate, since the rotating body 303 is eccentrically disposed on the rotating seat 301, the rotating body 303 rotates around the axis of the drive shaft 306 within the groove to perform revolution motion. When the rotating body 303 contacts the groove wall, the contact force generated by the two causes the rotating body 303 to rotate around its axis, and pushes the slide plate 304 to move between the first position and the second position. Please refer to... Figure 7 As shown, the slide has a first slide wall 3043 and a second slide wall 3044, which are arranged on the rotation path of the rotating body 303. Figure 6 As shown, when the rotating body 303 contacts the first slide wall 3043, it pushes the slide plate 304 downward under the drive of the transmission shaft 306, thereby pushing the slide plate 304 from the first position to the second position; as Figure 5 As shown, when the rotating body 303 contacts the second slide wall 3044, it pushes the slide plate 304 upward under the drive of the transmission shaft 306, so as to push the slide plate 304 from the second position to the first position.

[0072] When the drive shaft 306 drives the rotary seat 301 to rotate, when the rotating body 303 contacts the first slide wall 3043 or the second slide wall 3044, the rotating body 303 rotates around the axis of the drive shaft 306 and the axis of the rotating shaft 302 at the same time, reducing friction and pushing the slide plate 304 to move. As the rotating body 303 rotates around the axis of the drive shaft 306, it will also disengage from the contact relationship with the first slide wall 3043 or the second slide wall 3044 during the process of pushing the slide plate 304 to move. When the rotating body 303 disengages from the contact relationship with the first slide wall 3043 or the second slide wall 3044, the rotating body 303 rotates in the slide and stops rotating around its own axis.

[0073] like Figure 5 As shown in Figure 6, the slide also has an upper limit groove wall 3041 and a lower limit groove wall 3042. Figure 6As shown, when the transmission mechanism 3 performs the re-engaging / opening action, the upper limit groove wall 3041 slides downward until it contacts the hexagon socket head cap screw 401, and the slide plate 304 is in the second position; simultaneously, the handle 103 is in the re-engaging / opening position under the pushing force of the slide plate 304. On the other hand, when the transmission mechanism 3 performs the closing action, the lower limit groove wall 3042 slides upward until it contacts the hexagon socket head cap screw 401, and the slide plate 304 is in the first position; simultaneously, the handle 103 reaches the closing position under the pushing force of the slide plate 304. The upper limit groove wall 3041 and the lower limit slide plate increase the contact surface with the hexagon socket head cap screw 401, reducing vibration and impact while also reducing the wear rate.

[0074] In some embodiments, the manual mechanism 4 further includes a second bushing 402, a spring 403, and a flat washer 404. A hex socket head cap screw 401 passes sequentially through the second bushing 402, the spring 403, and the flat washer 404 and is fixed to the drive shaft 306. When the hex socket head cap screw 401 is fixed to the drive shaft 306, the flat washer 404 remains in close contact with the rotating base 301. The flat washer 404 increases the contact area with the rotating base 301 while reducing damage to its surface. The spring 403 prevents loosening and increases the frictional force when the hex socket head cap screw 401 is tightened onto the drive component.

[0075] As an optional implementation of the above embodiments, such as Figure 4 As shown, the reclosing mechanism also includes a first bracket 308, with the electric mechanism 2 and the manual mechanism 4 respectively disposed on both sides of the thickness direction of the first bracket 308. Generally, the thickness direction of the first bracket 308 is parallel to the axial direction of the drive shaft 306. Distributing the electric mechanism 2 and the manual mechanism 4 on both sides of the thickness direction of the first bracket 308 helps reduce the space occupied by the reclosing mechanism. In implementation, the electric mechanism 2 is located on the inner side of the first bracket 308 facing the circuit breaker housing 1, while the manual mechanism 4 is located on the outer side of the first bracket 308 away from the circuit breaker housing 1, facilitating manual operation by the operator. Since the handle 103 is externally located on the housing 1, the slide plate 304 and the manual mechanism 4 are disposed on the same side of the thickness direction of the first bracket 308, i.e., on the outer side of the first bracket 308, thus saving space.

[0076] In this embodiment, the slide plate 304 is movably connected to the first support 308, and the direction of movement of the slide plate 304 is parallel to the height direction of the first support 308. Figure 8As shown, a guide post 305 is provided on the first support 308. The extension direction of the guide post 305 is perpendicular to the thickness direction of the first support 308 and parallel to the height direction of the first support 308. The slide plate 304 is provided with a guide hole, and the guide post 305 is inserted into the guide hole to form a sliding pair. The slide plate 304 slides along the guide post 305 to limit the degrees of freedom in the left-right (width direction) and front-back (thickness direction) directions, and to maintain the stability of the slide plate 304 when moving in the first and second positions.

[0077] Meanwhile, the first bracket 308 also serves to protect the drive component 310. During assembly, the first bracket 308 is fixed to the circuit breaker housing 1.

[0078] As an optional implementation of the above embodiments, such as Figure 4 As shown, the first bracket 308 is equipped with a contact 204. The contact 204 is connected to the controller signal inside the circuit breaker. Figure 5 and Figure 6 As shown, the rotary base 301 is provided with a first boss 3012 and a second boss 3011 that are spaced apart along its circumference and can contact the contact 204. Figure 5 As shown, when the slide plate 304 is in the first position, the first boss 3012 contacts the contact 204. Figure 6 As shown, when the slide plate 304 is in the second position, the second boss 3011 contacts the contact 204. When the slide plate 304 is driven by the electric mechanism 2 to perform reclosing movement, if the controller outputs a closing signal to the electric mechanism 2, the electric mechanism 2 drives the rotating seat 301 to move, and also drives the slide plate 304 to move; when the slide plate 304 reaches the first position, the first boss 3012 contacts the contact 204, the contact 204 is pressed and outputs a feedback signal, the controller receives the feedback signal, and thus determines that the circuit breaker is in the closed position. When the slide plate 304 is driven by the electric mechanism 2 to perform reclosing movement, if the controller outputs a re-clamping / opening signal to the electric mechanism 2, the electric mechanism 2 drives the rotating seat 301 to move, and also drives the slide plate 304 to move; when the slide plate 304 reaches the second position, the second boss 3011 contacts the contact 204, the contact 204 is pressed and outputs a feedback signal, the controller receives the feedback signal, and thus determines that the circuit breaker is in the re-clamping / opening position. That is, when the controller sends a closing / opening signal, the electric drive mechanism starts to operate. When it reaches the designated position, the bosses distributed on the rotary seat 301 come into contact with the contact 204. At this moment, the contact 204 is used to feed back the closing signal or the opening / re-clamping signal, and together with the contact 204 indicating the position inside the circuit breaker housing 1, the product's opening / closing status is determined.

[0079] In some embodiments, such as Figure 1 and Figure 4As shown, the transmission mechanism includes a rotary base 301, a rotating shaft 302, a rotating body 303, a sliding plate 304, a guide post 305, a transmission shaft 306, an outer bushing 307, a first bracket 308, a first bushing 309, a driving component 310, and an inner bushing 311. The rotary base 301 is fitted onto the transmission shaft 306, with a tight fit for timely linkage of the driving component 301. The rotating body 303 is tightly fitted above the rotating shaft 302 and fastened to the rotary base 301 below. The rotating shaft 302 and the rotating body 303 can be assembled using a composite riveting method or a rotating connection method, effectively reducing wear during transmission and allowing for flexible rotation. The sliding plate 304 is positioned on both sides by the guide post 305, restricting the sliding plate 304 to four degrees of freedom: left, right, front, and back. The transmission shaft 306 internally adopts a telescopic limit shaft, containing a built-in telescopic spring 3062, which facilitates timely adjustment of the telescopic amount according to the transmission status of the reclosing mechanism. In automatic reclosing mode, it effectively achieves synchronous rotation with the 310 drive component. In manual reclosing mode, it flexibly completes clockwise rotation without affecting the automatic reclosing mechanism. The outer bushing 307 and inner bushing 311 adopt a stepped structure. The inner circular boss is used for fixed limit, and the outer circle is used to limit the vertical freedom and reduce internal friction. The drive shaft 306 passes through the drive component 310 and the inner bushing 311 and is fitted into the second bracket 205. The outer bushing 307 is inserted above the drive shaft 306 and passes through the through hole of the first bracket 308 above the stepped groove to complete the limit. Finally, it is fastened to the first bracket 308 by screws passing through the first bushing 309.

[0080] This application also proposes a circuit breaker including a reclosing mechanism. This reclosing mechanism employs some or all of the technical solutions described in the foregoing embodiments, thus the circuit breaker possesses some or all of the technical advantages of the foregoing embodiments. Figure 8 or Figure 9 The circuit breaker includes a housing 1 and a handle 103. The housing 1 includes a center cover 102 and a base 101. A reclosing mechanism is mounted on the center cover 102 and / or the base 101, and the handle 103 is connected to a sliding plate 304. The reclosing mechanism includes a first bracket 308 and a second bracket 205. An electric mechanism 2 is mounted on the second bracket 205. The sliding plate 304 is movably mounted on the first bracket 308. The first bracket 308 and the second bracket 205 are fixed to the center cover 102 and / or the base 101, for example, through threaded fastener connections, insertion, welding, etc.

[0081] The above provides a detailed description of a reclosing mechanism and circuit breaker provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A reclosing mechanism, characterized in that, include: Manual mechanism; Electric mechanism; as well as A transmission mechanism includes a drive component, a drive shaft, a spring component disposed on the drive shaft, and a slide plate; the drive shaft is poweredly connected to the slide plate and is used to drive the slide plate to move between a first position and a second position; the drive shaft is fixedly connected to the manual mechanism; the drive component is poweredly connected to the electric mechanism. The drive member has a shaft hole; the drive shaft is at least partially embedded in the shaft hole and can rotate within the shaft hole along its axis; the wall of the shaft hole has a thrust surface extending in the radial direction of the drive member. When the elastic member contacts the thrust surface, the electric mechanism drives the driving member to rotate in a preset direction, thereby driving the transmission mechanism to rotate. When the transmission mechanism is rotated along the preset direction by the manual mechanism, the elastic element moves away from the thrust surface.

2. The reclosing mechanism as described in claim 1, characterized in that, The hole wall of the shaft hole has at least two circumferential curved surfaces and at least two thrust surfaces; the at least two circumferential curved surfaces are staggered in the circumferential direction of the drive member, and the at least two thrust surfaces are spaced apart in the circumferential direction of the drive member, and two adjacent circumferential curved surfaces are transitioned by one thrust surface. The elastic element abuts against any circumferential curved surface.

3. The reclosing mechanism as described in claim 2, characterized in that, The elastic element has at least two, and the number of elastic elements is the same as the number of thrust surfaces. At least two elastic elements are arranged at circumferential intervals along the transmission shaft. Each circumferential curved surface abuts against one of the elastic elements.

4. The reclosing mechanism as described in claim 2, characterized in that, The distance between the circumferential curved surface and the centroid of the driving component first decreases and then increases in the preset direction; Furthermore, at the point where the distance between the circumferential curved surface and the centroid of the driving member is minimized, the transmission shaft abuts against the circumferential curved surface.

5. The reclosing mechanism as described in claim 1, characterized in that, The elastic element includes a spring and a limiting block. The spring is connected to the drive shaft and abuts the limiting block against the wall of the shaft hole, and can also abut against the thrust surface.

6. The reclosing mechanism as described in claim 5, characterized in that, When the limiting block abuts against the thrust surface, the length of the spring is at its maximum value.

7. The reclosing mechanism as described in claim 1, characterized in that, The transmission mechanism further includes a rotary seat, a rotating shaft, and a rotating body, wherein the rotary seat is fixed on the section of the transmission shaft that extends out of the shaft hole; The rotating shaft is eccentrically mounted on the rotating base, and the rotating body is rotatably mounted on the rotating shaft; the sliding plate is provided with a sliding groove, and the rotating body is disposed in the sliding groove. When the rotating body rotates around the transmission shaft in the sliding groove, it can push the sliding plate to move between the first position and the second position.

8. The reclosing mechanism as described in claim 7, characterized in that, The reclosing mechanism further includes a first bracket, and the electric mechanism and the manual mechanism are respectively disposed on both sides of the thickness direction of the first bracket; the sliding plate and the manual mechanism are disposed on the same side of the thickness direction of the first bracket, and the sliding plate is movably connected to the first bracket, and the moving direction of the sliding plate is parallel to the height direction of the first bracket.

9. The reclosing mechanism as described in claim 8, characterized in that, The first bracket is provided with a contact, and the rotating base is provided with a first boss and a second boss that are spaced apart along its circumference and can contact the contact; Wherein, when the slide is in the first position, the first boss contacts the contact; When the slide is in the second position, the second boss contacts the contact.

10. A circuit breaker, characterized in that, The circuit breaker includes the reclosing mechanism as described in any one of claims 1 to 9.

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