An operating mechanism for a disconnector

Abstract

The application discloses an operating mechanism of an isolating switch, which comprises a shell and is characterized in that the operating mechanism further comprises a main shaft part, an auxiliary spring and a self-locking mechanism; the self-locking mechanism has a locking state and an unlocking state; when the self-locking mechanism is in the locking state, a lock core and a lock sleeve form a limiting fit; when the self-locking mechanism is in the unlocking state, the limiting fit of the lock core and the lock sleeve is released; during rotation of the main shaft part from a disconnecting position to a closing position, the main shaft part extrudes the lock sleeve to make the lock sleeve slide in a first direction, the self-locking mechanism is converted into the locking state, and the lock sleeve keeps the auxiliary spring in a high-energy state; during rotation of the main shaft part from the closing position to the disconnecting position, the main shaft part extrudes the lock sleeve to make the lock sleeve slide in the first direction, the self-locking mechanism is unlocked, the auxiliary spring is converted into a low-energy state and makes the lock sleeve slide in a second direction and push the main shaft part, so that the main shaft part is provided with a rotating force to the disconnecting position; and the application has the characteristics that the rotating angle of the main shaft part is larger.

Description

Technical Field

[0001] This application relates to the electrical field, specifically to an operating mechanism for a disconnector switch. Background Technology

[0002] In recent years, disconnecting switches have seen rapid development in power distribution systems. Rotary disconnecting switches, as one type of disconnecting switch, have experienced particularly rapid growth.

[0003] The switching device disclosed in CN100538949C includes a rotating shaft, an actuator, a spring, a spindle assembly, etc. It achieves rapid rotation by using the spring to drive the spindle assembly through the rotation of the rotating shaft.

[0004] However, there is a problem with this patent: the spring is connected to the actuator. The actuator applies spring force to the spindle component, so the actual rotation angle of the spindle component will be very small, generally only about 40° or 50°.

[0005] The rotation angle of the main shaft component directly affects the rotation angle of the moving contact of the disconnector. Therefore, the rotation angle of the moving contact in this structure is relatively small (consistent with the rotation angle of the main shaft component), resulting in a smaller opening distance.

[0006] Therefore, how to increase the rotation angle of the spindle component based on this operating mechanism is a question worth considering. Summary of the Invention

[0007] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and to provide an operating mechanism for a disconnecting switch.

[0008] This application provides: an operating mechanism for a disconnector switch, comprising a housing, wherein, further comprising, The main spindle assembly is rotatably mounted to the housing, and the main spindle assembly has an open position and an open position; The auxiliary spring, connected to the locking sleeve, has a high-energy state and a low-energy state, with the deformation being greater in the high-energy state compared to the low-energy state. The self-locking mechanism includes a sliding lock sleeve and a rotating lock cylinder; the sliding direction of the lock sleeve is parallel to a radial direction of the main shaft component and parallel to the rotation center of the lock cylinder; the self-locking mechanism has a locked state and an unlocked state; when the self-locking mechanism is in the locked state, the lock cylinder and the lock sleeve form a limiting fit; when the self-locking mechanism is in the unlocked state, the limiting fit between the lock cylinder and the lock sleeve is released; During the rotation of the main shaft component from the open position to the closed position, the main shaft component pushes the locking sleeve to slide in the first direction and causes the auxiliary spring to change to a high-energy state. The self-locking mechanism changes to the locked state and keeps the auxiliary spring in the high-energy state. During the rotation of the main shaft assembly from the closed position to the open position, the main shaft assembly squeezes the locking sleeve to slide in the first direction, driving the self-locking mechanism to release the lock. The auxiliary spring changes to a low energy state and causes the locking sleeve to slide in the second direction and push the main shaft assembly, providing the main shaft assembly with the force to rotate to the open position. The first direction is the direction in which the locking sleeve is away from the main shaft component, and the second direction is opposite to the first direction.

[0009] In some embodiments of this application, the spindle component includes a pressing protrusion located at an eccentric position on the spindle component, the pressing protrusion being used to press the locking sleeve to form a lock and release it.

[0010] In some embodiments of this application, when the self-locking mechanism is released, the locking sleeve, under the action of the auxiliary spring, pushes the compression protrusion to provide a force for the main shaft component to rotate toward the open position.

[0011] In some embodiments of this application, the locking sleeve has a locking drive part and an unlocking drive part; during the rotation of the main shaft component from the open position to the closed position, the main shaft component presses the locking drive part to make the locking sleeve slide in the first direction, so that the self-locking mechanism is converted to a locked state; during the rotation of the main shaft component from the closed position to the open position, the main shaft component presses the unlocking drive part to make the locking sleeve slide in the first direction, so that the self-locking mechanism is unlocked, and the locking sleeve pushes the main shaft component through the locking drive part under the action of the auxiliary spring, so as to provide the main shaft component with a force to rotate to the open position.

[0012] In some embodiments of this application, both the locking drive and the unlocking drive are inclined or curved surfaces, and they have an intersecting position. The straight-line distance from the intersection position to the rotation center of the spindle component is less than the straight-line distance from the rotation center of the spindle component at any other location of the locking drive or unlocking drive.

[0013] In some embodiments of this application, a compensation drive unit is also included, which is connected to a locking drive unit. After the self-locking mechanism is unlocked, the locking sleeve first pushes the main spindle component through the locking drive unit under the action of the auxiliary spring, and then pushes the main spindle component through the compensation drive unit as the main spindle component rotates further.

[0014] In some embodiments of this application, when the spindle component is in the open position, the compensation drive unit abuts against the spindle component.

[0015] In some embodiments of this application, the lock sleeve has a locking rod that slides synchronously with the lock sleeve in the radial direction; the lock cylinder has a locking position, an unlocking position, a first driving slope, and a second driving slope; the locking position includes a locking groove and a locking movement slope; the unlocking position includes a clearance structure and an unlocking movement slope; the first driving slope and the second driving slope are located on one side of the locking position and the unlocking position in a first direction, and the first driving slope, the second driving slope, the locking movement slope, and the unlocking movement slope are all inclined surfaces; when the locking rod is in the locking groove / clearance structure, the lock sleeve slides in the first direction under the pressure of the main shaft component. The locking rod, along with the first / second driving slope, forms an inclined plane, causing the lock cylinder to rotate. The auxiliary spring deforms to a high-energy state. As the squeezing force of the main shaft component disappears, the auxiliary spring causes the lock sleeve to move in the second direction. The locking rod acts on the unlocking / locking slope, forming an inclined plane, causing the lock cylinder to rotate. The locking rod enters the clearance structure / locking groove. When the locking rod is in the locking groove, the locking rod and the locking groove abut against each other in the axial direction, forming the limiting fit, keeping the auxiliary spring in a high-energy state. When the locking rod is in the clearance structure, the locking rod and the clearance structure have no contact, the auxiliary spring releases energy to a low-energy state, and the lock sleeve slides in the second direction.

[0016] In some embodiments of this application, a drive shaft, an actuator, and a main spring are also included. The actuator and drive shaft are rotatably arranged around a second axis, and the rotation center of the main shaft component is a first axis, which is perpendicular to the second axis. One end of the drive shaft is exposed on the surface of the housing for external force to drive the closing and opening actions. The actuator and drive shaft are connected by a key to achieve transmission. The main spring is connected between the housing and the eccentric position of the actuator. The actuator has an opening drive part and a closing drive part, and the main shaft component has a driven part. When the drive shaft performs the closing action, the actuator rotates, causing the main spring to first store energy and then release energy. When the energy is released, the closing drive part pushes the driven part, providing a force for the main shaft component to rotate toward the closing position. When the drive shaft performs the opening action, the actuator rotates, causing the main spring to first store energy and then release energy. When the energy is released, the opening drive part pushes the driven part, providing a force for the main shaft component to rotate toward the opening position. The triggering time for the main shaft component to trigger the self-locking mechanism to unlock it is during the energy release period of the main spring.

[0017] In some embodiments of this application, the key connection between the actuator and the drive shaft forms a free stroke through a circumferential clearance, and the free stroke occurs at the initial stage of the drive shaft performing the closing operation. After the drive shaft rotates through this free stroke, the drive shaft and the actuator then form an effective transmission. When the main shaft component is in the closed position, the opening drive part and the driven part intersect in the axial direction of the drive shaft. When the main shaft component reaches the opening position, the motion trajectories of the closing drive part and the driven part do not intersect. The drive shaft has a cam part. During the free stroke movement time of the drive shaft performing the closing action, the cam part pushes the main shaft component to rotate, and the driven part rotates until it intersects with the motion trajectory of the closing drive part.

[0018] The advantages of this application compared to the prior art are: An auxiliary spring and a self-locking mechanism are added to the existing mechanism. The main shaft component locks the self-locking mechanism during the closing process, while the self-locking mechanism allows the auxiliary spring to store energy (high energy state). The main shaft component unlocks the self-locking mechanism during the opening process. The self-locking mechanism provides the main shaft component with a force to rotate towards the opening position. This force is additional, so the main shaft component can rotate at a larger angle. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A perspective view of the operating mechanism of the disconnecting switch according to an embodiment of this application is shown; Figure 2 This paper shows a schematic diagram of the operating mechanism of the disconnect switch according to an embodiment of the present application after the outer casing has been removed; Figure 3 A schematic diagram of the drive shaft, energy storage mechanism, and spindle component in an embodiment of this application is shown; Figure 4 A schematic diagram of the drive shaft in an embodiment of this application is shown; Figure 5 A schematic diagram of the spindle component in an embodiment of this application is shown; Figure 6 An exploded view of the drive shaft, connecting spring, and actuator in an embodiment of this application is shown; Figure 7 This illustration shows a schematic diagram of the energy storage mechanism in the open state in an embodiment of this application; Figure 8A schematic diagram of the closing action of the energy storage mechanism (after the no-load stroke) in an embodiment of this application is shown; Figure 9 A schematic diagram is shown in which the energy storage mechanism is in a critical point state when the circuit is closed, according to an embodiment of this application; Figure 10 This illustration shows a schematic diagram of the energy storage mechanism completing the closing operation in an embodiment of this application; Figure 11 A schematic diagram is shown in which the energy storage mechanism is in a critical point state when the circuit breaker is tripped in an embodiment of this application; Figure 12 An exploded view of the self-locking mechanism and auxiliary spring in an embodiment of this application is shown; Figure 13 A schematic diagram of the locking sleeve of the self-locking mechanism in an embodiment of this application is shown; Figure 14 A schematic diagram of the lock cylinder of the self-locking mechanism in an embodiment of this application is shown;

[0021] Figures 15A-15B The following diagrams show the self-locking mechanism in the unlocked and locked states in the embodiments of this application. Figures 16A-16B The following are schematic diagrams illustrating the locking and unlocking processes as the lock sleeve slides in the embodiments of this application; Figure 17 A diagram showing the relationship between the spindle component in the open position and the self-locking mechanism (in the unlocked state) in an embodiment of this application is illustrated. Figure 18 A schematic diagram is shown in which the main shaft component rotates to the closed position, triggering the locking sleeve to move in the first direction in an embodiment of this application; Figure 19 A diagram showing the relationship between the spindle component in the closed position and the self-locking mechanism (in the locked state) in an embodiment of this application is illustrated. Figure 20 This illustration shows a schematic diagram of the locking sleeve moving in the first direction when the main shaft component is rotating towards the open position in an embodiment of this application; Figure 21 This illustration shows a schematic diagram of the locking sleeve moving in the second direction when the main shaft component is rotating towards the open position in an embodiment of this application. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "electrical connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed electrical connection, a detachable electrical connection, or an integral connection; they can refer to a mechanical-electrical connection or an electro-electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. Example

[0027] like Figures 1-21 As shown, an embodiment of this application is an isolating switch.

[0028] This disconnector is a rotary disconnector, which includes an operating mechanism 100 and a switching unit. The operating mechanism 100 can drive the switching unit to open and close the circuit.

[0029] Specifically, the switch unit contains a moving contact and a stationary contact. The moving contact rotates a certain angle in one direction and then contacts the stationary contact, thus closing the circuit. The moving contact rotates a certain angle in another direction and then separates from the stationary contact, thus opening the circuit.

[0030] The operating mechanism 100 of the disconnecting switch includes a main shaft component 130. The main shaft component 130 serves as the power output component of the operating mechanism 100 of the disconnecting switch and is plugged into the moving contact of the switch unit, thus enabling it to drive the moving contact to rotate.

[0031] Here, the switching unit can be a two-pole structure or a multi-pole structure. There are many ways to assemble it. One way is to assemble one pole switching unit at each end of the operating mechanism 100 of the disconnecting switch, that is, the main shaft component 130 is simultaneously inserted into the moving contacts of the two pole switching units. Alternatively, the operating mechanism 100 of the disconnecting switch can be assembled with a one-pole switching unit (also called the first switching unit, with the main shaft component 130 inserted into the moving contact of the first switching unit), and the various switching units can be arranged and assembled in sequence (the moving contacts of the switching units are inserted in sequence).

[0032] The internal structure of the switching unit is common knowledge and will not be described in detail here.

[0033] The operating mechanism 100 of the disconnecting switch includes a drive shaft 110, an energy storage structure, a housing 120, a main shaft component 130, a self-locking mechanism 200, and an auxiliary spring 210.

[0034] The drive shaft 110 is rotatably mounted around the first axis O1 and the housing 120. One end of the drive shaft 110 is exposed above the housing 120, and the other end extends into the housing 120. Here, the drive shaft 110 serves as the output end of external force, allowing the user to operate the disconnector to open and close. When the disconnector is in the open state, rotating it in one direction will close it; conversely, when the disconnector is in the closed state, rotating it in the opposite direction will close it. The drive shaft 110 is not necessarily a solid structure; it can be a sleeve structure, allowing the user to attach a handle and insert the handle shaft into the sleeve for operation.

[0035] An energy storage mechanism is connected to the drive shaft 110. The energy storage mechanism includes a tripping drive unit 152 and a closing drive unit 153. Whether performing a tripping or closing action, the energy storage mechanism stores energy and then releases it under the action of the drive shaft 110. During energy release, it impacts the main shaft component 130, causing the main shaft component 130 to rotate to the target position. Specifically, when the drive shaft 110 performs a closing action, the energy storage mechanism stores energy and then releases it. During energy release, the closing drive unit 153 pushes the main shaft component 130, causing the main shaft component 130 to rotate to the closed position. Conversely, when the drive shaft 110 performs a tripping action, the energy storage mechanism stores energy and then releases it. During energy release, the tripping drive unit 152 pushes the main shaft component 130, causing the main shaft component 130 to rotate to the tripping position.

[0036] The main shaft assembly 130 is rotatably mounted around the second axis O2 and the housing 120. Here, the first axis O1 and the second axis O2 are perpendicular to each other. The main shaft assembly 130 has an open position and a closed position, which are the same as those of the moving contact. The main shaft assembly 130 has a driven portion 132, which is a protrusion that rotates to different positions under the action of different driving units. For example, when the closing driving unit 153 pushes the driven portion 132, the main shaft assembly 130 rotates towards the closed position; when the opening driving unit 152 pushes the driven portion 132, the main shaft assembly 130 rotates towards the open position.

[0037] The energy storage mechanism includes an actuator 150 and two main springs 160.

[0038] Here, the main spring 160 is connected between the housing 120 and the actuator 150. The main spring 160 has a first energy release state, a second energy release state, and a critical point state.

[0039] When performing the closing action, the main spring 160 switches from the first energy release state to the critical point state (this is the energy storage action when closing). After passing the critical point, the main spring 160 switches from the critical point state to the second energy release state (this is the energy release action when closing, and it is also the source of the force that causes the main shaft component 130 to reach the closing position).

[0040] When the circuit breaker is opened, the main spring 160 switches from the second energy release state to the critical point state (this is the energy storage action when opening the circuit breaker). After passing the critical point, the main spring 160 switches from the critical point state to the first energy release state (this is the energy release action when opening the circuit breaker, and it is also the source of the force that causes the main shaft component 130 to reach the opening position).

[0041] The change in state of the main spring 160 is caused by the rotation of the actuator 150. Specifically, the actuator 150 is mounted on the drive shaft 110 in a rotating configuration (both have the same center of rotation). The drive shaft 110 and the actuator 150 are connected by a key 111 for transmission. The actuator 150 rotates during both closing and opening actions of the drive shaft 110. However, the drive shaft does not maintain a constant transmission relationship with the drive shaft 110; there is a period of idle travel. This idle travel is due to a circumferential gap in the key 111 connection between the actuator 150 and the drive shaft 110. Specifically, the drive shaft 110 has a key 111, and the actuator 150 has a keyway 151. The circumferential dimension of the keyway 151 is larger than that of the key 111, and the key 111 is located within the keyway 151. This idle stroke only exists during the closing operation. That is, when the drive shaft 110 rotates under the action of external force, the key 111 and the keyway 151 move relative to each other (that is, the so-called idle stroke). As the key 111 contacts one of the groove walls of the keyway 151, the two form a transmission connection, which means that the subsequent motion of the drive shaft 110 will be able to drive the actuator 150 to rotate.

[0042] This free travel does not exist during the opening action (that is, when the opening action is performed, key 111 and the other groove wall of keyway 151 are already in contact, achieving effective transmission), and it only exists in the initial stage of the closing action.

[0043] In addition, the settings of key 111 and key slot 151 can also be interchanged.

[0044] Here, the main spindle component 130 is sleeved on the drive shaft 110. When the main spindle component 130 is in the closed position, the movement trajectories of the opening drive unit 152 and the driven unit 132 intersect. The so-called intersection here means that, assuming the actuator 150 is rotating at this time, the opening drive unit 152 can contact the driven unit 132.

[0045] When the main shaft component 130 is in the open position, the movement trajectories of the closing drive unit 153 and the driven unit 132 do not intersect. The term "no intersection" here means that even if the actuator 150 rotates at this time (in reality, the actuator 150 does not rotate because the drive shaft 110 and the actuator 150 are still in the idle stroke period), the closing drive unit 153 cannot contact the driven unit 132.

[0046] In order for the driven part 132 to move to the area where it intersects with the closing drive part 153, the drive shaft 110 has a cam part 112. In the initial stage of performing the closing action (that is, during the idle stroke of the drive shaft 110 and the actuator 150), the cam part 112 contacts the main shaft component 130 to rotate the main shaft component 130, so that the driven part 132 can move to the position where it intersects with the movement trajectory of the closing drive part 153.

[0047] Here, to eliminate the external force on the drive shaft 110 during the idle stroke and ensure that the drive shaft 110 can return to its original position, a connecting spring 170 is provided between the drive shaft 110 and the actuator 150. The connecting spring 170 is a torsion spring, with one end inserted into the actuator 150 and the other end inserted into the drive shaft 110. In this way, even if the external force on the drive shaft 110 is removed during the idle stroke, it can return to its pre-operation position under the action of the connecting spring 170.

[0048] The self-locking mechanism 200 includes a sliding lock sleeve 220 and a rotating lock cylinder 230.

[0049] Here, the sliding of the lock sleeve 220 and the rotation of the lock cylinder 230 are both relative to the outer casing 120. That is, the outer casing 120 has a mounting feature, the lock cylinder 230 is rotatably mounted on the mounting feature, and the lock sleeve 220 is slidably mounted on the mounting feature. As a relatively simple implementation, the mounting feature can be a separately molded component, such as a bracket 125, which is then fastened to the outer casing 120. In this way, both the lock cylinder 230 and the lock sleeve 220 can be fixed to the outer casing 120 by mounting them on the bracket 125. Alternatively, the mounting feature can also be a structure partially formed with the outer casing 120 (i.e., integrally injection molded), on which the lock cylinder 230 and the lock sleeve 220 can be directly mounted.

[0050] Here, the sliding direction of the locking sleeve 220 is parallel to one of the radial directions of the spindle component 130. That is, the locking sleeve 220 can move toward the direction of the spindle component 130 (i.e., the first direction F1) or away from the direction of the spindle component 130 (i.e., the second direction F2).

[0051] The auxiliary spring 210 connects the locking sleeve 220 and the bracket 125 (or, more specifically, the locking sleeve 220 and the outer shell 120). The auxiliary spring 210 has both a high-energy state and a low-energy state. Here, "high-energy state" and "low-energy state" are relative concepts, meaning that the deformation of the auxiliary spring 210 in the high-energy state is greater than that in the low-energy state. In other words, when the auxiliary spring 210 transitions from a low-energy state to a high-energy state, it is a process of energy storage. Conversely, it is a process of energy release. Of course, the low-energy state here does not necessarily mean that the auxiliary spring 210 is free of deformation. It can be either deformed or undeformed. In this application, the auxiliary spring 210 is a compression spring, and a design of two springs corresponding to one locking sleeve 220 is used. Alternatively, tension springs, torsion springs, etc., can also be used, and the number can be set to more or fewer.

[0052] Here, the rotation center of the lock cylinder 230 is parallel to the sliding direction of the lock sleeve 220. The lock sleeve 220 is fitted onto the lock cylinder 230 and can slide relative to the lock cylinder 230. The self-locking mechanism 200 has a locked state and an unlocked state, that is, the lock cylinder 230 and the lock sleeve 220 are in both locked and unlocked states. When in the locked state, the lock cylinder 230 and the lock sleeve 220 form a limiting engagement; conversely, in the unlocked state, the limiting engagement between the lock cylinder 230 and the lock sleeve 220 is released.

[0053] During the rotation of the main shaft component 130 from the open position to the closed position, the main shaft component 130 presses the locking sleeve 220, causing the locking sleeve 220 to slide in the first direction F1, causing the auxiliary spring 210 to change from a low energy state to a high energy state. At the same time, the self-locking mechanism 200 is converted to a locked state, so the auxiliary spring 210 remains in a high energy state.

[0054] During the rotation of the main shaft component 130 from the closed position to the open position, the main shaft component 130 presses the locking sleeve 220, causing the locking sleeve 220 to slide in the first direction F1. The self-locking mechanism 200 is unlocked, and the auxiliary spring 210 changes from a high energy state to a low energy state, driving the locking sleeve 220 to move in the second direction F2 and pushing the main shaft component 130 to rotate, thus providing the main shaft component 130 with a force (additional force) to rotate in the open position.

[0055] Based on the existing mechanism, by adding an auxiliary spring 210 and a self-locking mechanism 200, the auxiliary spring 210 stores and holds energy when the main shaft component 130 rotates to the closed position, and releases energy when rotating to the open position to provide additional force for the opening movement. This allows the main shaft component 130 to rotate more than in the prior art, thereby increasing the opening angle. (If the prior art is 40°-50°, the structure of this application will increase it to 70° or even greater.) Here, the unlocking timing of the self-locking mechanism 200 is during the opening action, specifically: during the transition of the main spring 160 from the critical point state to the first release state, the opening drive unit 152 impacts the driven unit 132, causing the main shaft component 130 to rotate in the direction of the opening position. The main shaft component 130 then triggers the locking sleeve 220 to move to the first position, thus unlocking the mechanism. For example, if the main shaft component 130 needs to rotate a total of 90° from the closed position to the open position, the main shaft component 130 triggers the locking sleeve 220 to move to the first position when it has rotated approximately 38°, completing the unlocking of the self-locking mechanism 200 (the main spring 160 has already released energy before the main shaft component 130 rotates to 38°, because only after releasing energy can the main shaft component 130 rotate to the open position). Of course, the angle here is not specific. The total angle that the main shaft component 130 needs to rotate from the closed position to the open position can be set to be more or less (for example, between 60° and 120°), as long as the timing of the main shaft component 130 triggering the locking sleeve 220 is after the main spring 160 has released its energy. Such an unlocking timing ensures the action sequence and improves the stability of the opening force.

[0056] In this embodiment, the self-locking mechanism 200 completes locking at the initial stage of the closing operation (when the main shaft component 130 rotates under the action of the cam portion 112 of the drive shaft 110, i.e., during the idle stroke of the drive shaft 110), causing the main shaft component 130 to trigger the locking sleeve 220 to move to the first position, thus achieving locking. Of course, it can also be set to the middle stage of the closing operation (when the main spring 160 releases energy, causing the closing drive portion 153 of the actuator 150 to strike the driven portion 132, causing the main shaft component 130 to rotate in the direction of the closing position), causing the main shaft component 130 to trigger the locking sleeve 220 to move to the first position again, thus achieving locking; or a combination of both, that is, the locking sleeve 220 moves a small distance to the first position at the initial stage of the closing operation, and then moves a small distance to the first position again in the middle stage of the closing operation, with the two distances superimposed to complete the locking.

[0057] Here, the spindle component 130 has a pressing protrusion 133, which is located at an off-center position of the spindle component 130, that is, at a position other than the second axis O2. The pressing protrusion 133, which is off-center, can better press the locking sleeve 220 to complete locking and unlocking.

[0058] Here, in addition to compressing the locking sleeve 220, the compression protrusion 133 can also serve other functions. For example, when the self-locking mechanism 200 is released, the locking sleeve 220, under the action of the auxiliary spring 210, acts in the second direction F2, pushing the compression protrusion 133, thereby providing the spindle assembly 130 with a force to rotate towards the open position. This structural design simplifies the structure of the spindle assembly 130, eliminating the need for additional components to cooperate with the locking sleeve 220.

[0059] Of course, in addition to this, the pressing protrusion 133 can also simply make the locking sleeve 220 slide to complete the locking and unlocking action; the pushing of the locking sleeve 220 on the spindle component 130 can be achieved by other structures on the spindle component 130, but such structures are relatively more complex.

[0060] Here, the lock sleeve 220 has a locking drive unit 221 and an unlocking drive unit 222.

[0061] During the rotation of the main shaft component 130 from the open position to the closed position, the main shaft component 130 presses the locking drive part 221 to make the locking sleeve 220 slide in the first direction F1, so that the self-locking mechanism 200 is converted to the locked state.

[0062] During the rotation of the main shaft component 130 from the closed position to the open position, the main shaft component 130 presses the unlocking drive part 222 to make the locking sleeve 220 slide in the first direction F1, thereby releasing the self-locking mechanism 200.

[0063] After unlocking is completed, the locking sleeve 220, under the action of the auxiliary spring 210, pushes the main shaft component 130 through the locking drive part 221, providing the main shaft component 130 with a force to rotate toward the open position.

[0064] Such component structure design can realize a one-to-one correspondence of functions, and has the characteristics of simple structure and easy implementation.

[0065] In this embodiment, both the locking drive unit 221 and the unlocking drive unit 222 are inclined surfaces, and these inclined surfaces are tilted in different directions. This inclined surface structure allows the two to intersect at a certain point, and the closer they are to the intersection point, the smaller their straight-line distance from the second axis O2. Specifically, the straight-line distance from the intersection point to the rotation center of the main spindle component 130 is greater than the straight-line distance from the rotation center of the main spindle component 130 at any other point of the locking drive unit 221 or the unlocking drive unit 222. Here, the intersection point is also a critical point. The critical point means that when the main spindle component 130 presses the unlocking drive unit 222 until it crosses the intersection point (opening action), the locking drive unit 221 (under the action of the auxiliary spring 210, the locking sleeve 220 slides in the second direction F2) can push the main spindle component 130 to rotate.

[0066] The locking sleeve 220 also includes a compensation drive unit 223, which is connected to the locking drive unit 221. This connection means that the two are continuous in the circumferential (radial) direction of the spindle component 130. That is, after the self-locking mechanism 200 is released, the locking sleeve 220, under the action of the auxiliary spring 210, first pushes the spindle component 130 through the locking drive unit 221. As the spindle component 130 rotates further, the compensation drive unit 223 then pushes the spindle component 130 further.

[0067] Furthermore, when the main spindle component 130 is in the open position, the compensation drive unit 223 abuts against the main spindle component 130. This abutting structure also has a suppressive effect, that is, the locking sleeve 220 and the auxiliary spring 210 together with the main spindle component 130 play a suppressive effect to prevent the main spindle component 130 from rebounding after being fully opened, which can effectively prevent the main spindle component 130 from rebounding and solve the problem of the moving contact linked with the main spindle component 130 falling back.

[0068] The lock sleeve 220 has a locking rod 224, which is arranged along the radial direction of the lock cylinder 230 and slides synchronously with the lock sleeve 220. Here, the locking rod 224 and the lock sleeve 220 are integrally formed, or they can be formed separately and then fastened by fasteners.

[0069] The surface of the lock cylinder 230 is provided with a locking position S1, an unlocking position S2, a first driving slope S30, and a second driving slope S40. These structures are designed to work in conjunction with the lock rod 224.

[0070] The locking position S1, the unlocking position S2, the first driving slope S30, and the second driving slope S40, together with the locking rod 224, form a ballpoint pen-like button 111 structure, which can effectively realize the switching between the locking and unlocking structures. The locking sleeve 220 only needs to slide once in the first direction F1 to switch the state with the lock cylinder 230.

[0071] The locking position S1 includes a locking motion slope S10 and a locking groove S15.

[0072] The locking motion slope S10 is an inclined plane with a high point S10a and a low point S10b. The positions of each point on the locking motion slope S10 along the axial direction P of the lock cylinder 230 are different. The first groove wall of the locking groove S15 is connected to the low point S10b (the two are flush). The locking motion slope S10 acts as a guide. When the locking rod 224 is subjected to force (offset a certain distance in the second direction F2 under the force of the auxiliary spring 210) and moves along the locking motion slope S10, it will move to the low point S10b until it enters the locking groove S15. Simultaneously, the lock cylinder 230 rotates (equivalent to the locking rod 224 and the locking motion slope S10 forming an inclined plane transmission, converting the axial sliding of the locking rod 224 into the rotation of the lock cylinder 230). When the locking bar 224 is in the locking groove S15, the locking groove S15 and the locking bar 224 are in contact in the axial direction P of the lock cylinder 230, which is the locked state mentioned above. At this time, the auxiliary spring 210 remains in a high energy state.

[0073] The unlocking position S2 includes the unlocking motion ramp S20 and the avoidance structure. The avoidance structure here is the avoidance channel S25, but it can also be an avoidance groove.

[0074] The unlocking ramp S20 is an inclined plane with a high point S20a and a low point S20b. The positions of each point on the unlocking ramp S20 along the axial direction P of the lock cylinder 230 are different. The first channel wall of the avoidance channel S25 is connected to the low point S10b of the locking ramp. The unlocking ramp S20 also serves as a guide. When the locking rod 224 is subjected to force (offset a certain distance in the second direction F2 under the force of the auxiliary spring 210) and moves along the unlocking ramp S20 to the low point S20b, it then enters the avoidance channel S25. Simultaneously, the lock cylinder 230 rotates (equivalent to the locking rod 224 and the unlocking ramp S20 forming an inclined plane transmission, converting the axial sliding of the locking rod 224 into the rotation of the lock cylinder 230). When the locking bar 224 is in the clearance channel S25, there is no contact between the clearance channel S25 and the locking bar 224 in the axial direction P of the lock cylinder 230, which is the unlocked state mentioned above. The auxiliary spring 210 will gradually release energy to a low energy state. During the energy release period, the locking bar 224 slides in the clearance channel S25 along the axial direction P of the lock cylinder 230.

[0075] The second channel wall of the clearance channel S25 is connected to the high point of the locking slope S10a, and the second groove wall of the locking groove S15 is connected to the high point of the unlocking slope S20a. That is, the unlocking position S2 and the locking position S1 are alternately connected in the circumferential direction of the lock cylinder 230. Therefore, if the locking lever 224 is currently in the unlocking position S2, and then moves out of the unlocking position S2, it will definitely move to the locking position S1 next time, and vice versa. Here, there are two sets of unlocking positions S2 and locking positions S1 because there are two locking levers 224. In addition, more locking levers 224, unlocking positions S2, and locking positions S1 can be set.

[0076] The unlocked gear S2 corresponds to the first drive slope S30, and the locked gear S1 corresponds to the second drive slope S40.

[0077] The first driving slope S30 and the second driving slope S40 are set on the first direction F1 of the unlock position S2 and the locking position S1, with a gap between them, and the locking lever 224 can slide between the gaps.

[0078] Both the first driving slope S30 and the second driving slope S40 are inclined surfaces, and both have a high point and a low point on the driving slope. The positions of the first driving slope S30 and the second driving slope S40 on the axial direction P of the lock cylinder 230 are different.

[0079] In the axial direction P of the lock cylinder 230, the locking groove S15 is aligned with the driving slope of the first driving slope S30 (the alignment here assumes that the locking rod 224 slides along the axial direction P of the lock cylinder 230 and can move from the locking groove S15 to the driving slope of the first driving slope S30), and the low point of the driving slope of the first driving slope S30 is aligned with the unlocking movement slope S20 (the alignment here assumes that the locking rod 224 slides along the axial direction P of the lock cylinder 230 and can move from the low point of the driving slope of the first driving slope S30 to the unlocking movement slope S20).

[0080] In the axial direction P of the lock cylinder 230, the clearance channel S25 is aligned with the driving slope of the second driving slope S40 (the alignment here assumes that the locking rod 224 slides along the axial direction P of the lock cylinder 230 and can move from the clearance channel S25 to the driving slope of the second driving slope S40), and the low point of the driving slope of the second driving slope S40 is aligned with the locking movement slope S10 (the alignment here assumes that the locking rod 224 slides along the axial direction P of the lock cylinder 230 and can move from the low point of the driving slope of the second driving slope S40 to the locking movement slope S10).

[0081] Regardless of the driving slope, it serves as a guide for the movement. When the locking rod 224 is subjected to force (when the locking sleeve 220 moves in the first direction F1 under the action of the main shaft component 130), it moves along the driving slope to the lowest point of the driving slope (during the movement, the lock cylinder 230 rotates, which is equivalent to the locking rod 224 and the driving slope forming an inclined plane transmission, converting the axial sliding of the locking rod 224 into the rotation of the lock cylinder 230). During the movement, the auxiliary spring 210 first stores energy, and after moving to the lowest point of the driving slope, the auxiliary spring 210 releases some energy to make the locking rod 224 move to the unlock position S2 or the locking position S1, thus completing the unlocking or locking.

[0082] Assuming the initial state is that the main shaft component 130 is in the open position, the locking rod 224 is in the avoidance channel S25.

[0083] When the closing operation is performed, as the main shaft component 130 rotates to the closing position, the locking sleeve 220 slides in the first direction F1 under the compression of the main shaft component 130. The locking rod 224 moves out of the clearance channel S25 and moves along the driving slope of the second driving slope S40 until it reaches the low point of the driving slope of the second driving slope S40. During this period, the auxiliary spring 210 changes to a high-energy state and the lock cylinder 230 rotates. Subsequently, the auxiliary spring 210 releases a certain amount of energy, causing the locking rod 224 to move towards the locking motion slope S10. Under the force of the auxiliary spring 210, the locking rod 224 moves along the locking motion slope S10 into the locking groove S15 (that is, the low point S10b of the locking slope). Since the locking rod 224 and the locking groove S15 abut against each other in the axial direction P of the lock cylinder 230 to form a locked state, the energy of the auxiliary spring 210 is only released a little (to make the locking rod 224 slide into the locking groove S15), and it is still in a high-energy state.

[0084] When the circuit breaker is opened, the main shaft component 130 rotates to the open position (the rotational force comes from the release of energy by the main spring 160, which causes the actuator 150 to rotate, which will not be described in detail here). The locking sleeve 220 slides in the first direction F1 under the compression of the main shaft component 130. The locking rod 224 moves out of the locking groove S15 and moves along the driving slope of the first driving slope S30 until it moves to the low point of the driving slope of the first driving slope S30. During this period, the auxiliary spring 210 is still in a high energy state and the lock core 230 rotates. Subsequently, the auxiliary spring 210 releases a certain amount of energy, causing the locking rod 224 to move toward the unlocking motion slope S20. Under the force of the auxiliary spring 210, the locking rod 224 moves along the unlocking motion slope S20 into the clearance channel S25. Since there is no contact between the clearance channel S25 and the locking rod 224, the locking rod 224 can slide along the clearance channel S25 (i.e., in the unlocked state). The auxiliary spring 210 can continue to release energy (until it reaches a low energy state), causing the locking sleeve 220 to continue to slide in the second direction F2, pushing the main shaft component 130 to rotate (providing additional force toward the open position).

[0085] In this embodiment, there are two sets of structures consisting of the self-locking mechanism 200 and the auxiliary spring 210, and there are also two pairs of features on the main shaft component 130. Alternatively, a scheme of one set of self-locking mechanism 200 and auxiliary spring 210 can also be adopted.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An operating mechanism for a disconnecting switch, comprising a housing, characterized in that: It also includes, The main spindle assembly is rotatably mounted to the housing, and the main spindle assembly has an open position and an open position; The auxiliary spring, connected to the locking sleeve, has a high-energy state and a low-energy state, with the deformation being greater in the high-energy state compared to the low-energy state. The self-locking mechanism includes a sliding lock sleeve and a rotating lock cylinder; the sliding direction of the lock sleeve is parallel to a radial direction of the main shaft component and parallel to the rotation center of the lock cylinder; the self-locking mechanism has a locked state and an unlocked state; when the self-locking mechanism is in the locked state, the lock cylinder and the lock sleeve form a limiting fit; when the self-locking mechanism is in the unlocked state, the limiting fit between the lock cylinder and the lock sleeve is released; During the rotation of the main shaft component from the open position to the closed position, the main shaft component pushes the locking sleeve to slide in the first direction and causes the auxiliary spring to change to a high-energy state. The self-locking mechanism changes to the locked state and keeps the auxiliary spring in the high-energy state. During the rotation of the main shaft assembly from the closed position to the open position, the main shaft assembly squeezes the locking sleeve to slide in the first direction, driving the self-locking mechanism to release the lock. The auxiliary spring changes to a low energy state and causes the locking sleeve to slide in the second direction and push the main shaft assembly, providing the main shaft assembly with the force to rotate to the open position. The first direction is the direction in which the locking sleeve is away from the main shaft component, and the second direction is opposite to the first direction.

2. The operating mechanism of a disconnecting switch according to claim 1, characterized in that: The spindle assembly includes a pressing protrusion located at an eccentric position on the spindle assembly. The pressing protrusion is used to press the locking sleeve to lock and unlock it.

3. The operating mechanism of a disconnecting switch according to claim 2, characterized in that: When the self-locking mechanism is released, the locking sleeve, under the action of the auxiliary spring, pushes and squeezes the protrusion, providing the main shaft component with a force to rotate toward the open position.

4. The operating mechanism of a disconnecting switch according to claim 1, characterized in that: The locking sleeve has a locking drive part and an unlocking drive part; during the rotation of the main shaft component from the open position to the closed position, the main shaft component presses the locking drive part to make the locking sleeve slide in the first direction, so that the self-locking mechanism is converted to the locked state; During the rotation of the main shaft assembly from the closed position to the open position, the main shaft assembly presses the unlocking drive unit to make the locking sleeve slide in the first direction, thereby releasing the self-locking mechanism. Under the action of the auxiliary spring, the locking sleeve pushes the main shaft assembly through the locking drive unit, providing the main shaft assembly with the force to rotate towards the open position.

5. The operating mechanism of a disconnecting switch according to claim 4, characterized in that: Both the locking drive and the unlocking drive are inclined or curved surfaces, and they intersect at a point. The straight-line distance from the intersection point to the rotation center of the spindle component is less than the straight-line distance from the rotation center of the spindle component at any other point in the locking drive or unlocking drive.

6. The operating mechanism of a disconnecting switch according to claim 4, characterized in that: It also includes a compensation drive unit, which is connected to the locking drive unit; after the self-locking mechanism is unlocked, the locking sleeve first pushes the main spindle component through the locking drive unit under the action of the auxiliary spring, and then pushes the main spindle component through the compensation drive unit as the main spindle component rotates further.

7. The operating mechanism of a disconnecting switch according to claim 6, characterized in that: When the spindle component is in the open position, the compensation drive unit abuts against the spindle component.

8. The operating mechanism of a disconnecting switch according to claim 1, characterized in that: The lock sleeve has a locking rod, which slides synchronously with the lock sleeve in the radial direction; the lock cylinder has a locking position, an unlocking position, a first driving slope and a second driving slope. The locking position includes a locking groove and a locking movement ramp; the unlocking position includes a clearance structure and an unlocking movement ramp; the first driving ramp and the second driving ramp are located on one side of the locking position and the unlocking position in the first direction, and the first driving ramp, the second driving ramp, the locking movement ramp and the unlocking movement ramp are all inclined surfaces. When the locking rod is in the locking groove / avoidance structure, the locking sleeve is pressed by the main shaft component and slides in the first direction. The locking rod adheres to the first driving slope / second driving slope to form an inclined plane transmission, causing the lock cylinder to rotate. The auxiliary spring deforms to a high-energy state. As the pressing force of the main shaft component disappears, the auxiliary spring causes the locking sleeve to move in the second direction. The locking rod acts on the unlocking motion slope / locking motion slope to form an inclined plane transmission, causing the lock cylinder to rotate. The locking rod enters the avoidance structure / locking groove. When the locking rod is in the locking groove, the locking rod and the locking groove abut against each other in the axial direction to form the aforementioned limiting fit, keeping the auxiliary spring in a high-energy state. When the locking rod is in the avoidance structure, the locking rod and the avoidance structure have no abutting relationship, the auxiliary spring releases energy to a low-energy state, and the locking sleeve slides towards the second direction.

9. The operating mechanism of a disconnecting switch according to claim 1, characterized in that: It also includes a drive shaft, an actuator, and a main spring; the actuator and drive shaft are rotatably arranged around the second axis, the rotation center of the main shaft component is the first axis, and the first axis and the second axis are perpendicular to each other; one end of the drive shaft is exposed on the surface of the housing so that it can be driven by external force to realize the closing and opening actions; The actuator and drive shaft are connected by a key to achieve transmission; the main spring is connected between the housing and the eccentric position of the actuator. The actuator has a tripping drive and a closing drive, and the main shaft component has a driven part. When the drive shaft performs a closing action, the actuator rotates, causing the main spring to first store energy and then release energy. When the energy is released, the closing drive pushes the driven part, providing the main shaft component with a force to rotate toward the closing position. When the drive shaft performs a tripping action, the actuator rotates, causing the main spring to first store energy and then release energy. When the energy is released, the tripping drive pushes the driven part, providing the main shaft component with a force to rotate toward the tripping position. The trigger time for the main shaft component to trigger the self-locking mechanism to unlock it is during the energy release period of the main spring.

10. The operating mechanism of a disconnecting switch according to claim 9, characterized in that: The key connection between the actuator and the drive shaft forms a free stroke through the circumferential clearance. This free stroke occurs at the initial stage of the drive shaft performing the closing operation. The drive shaft rotates through this free stroke before the drive shaft and actuator form an effective transmission. When the main shaft component is in the closed position, the opening drive part and the driven part intersect in the axial direction of the drive shaft. When the main shaft component reaches the opening position, the motion trajectories of the closing drive part and the driven part do not intersect. The drive shaft has a cam part. During the free stroke period of the drive shaft performing the closing action, the cam part pushes the main shaft component to rotate, and the driven part rotates until it intersects with the motion trajectory of the closing drive part.

Images