Operating unit

Abstract

The invention discloses an operation unit which comprises a driving shaft, a shell and an output piece. Wherein the output piece is provided with a limited part, and the limited part is arranged at the eccentric position of the output piece and synchronously rotates along with the output piece; an elastic limiting device is further arranged in the shell and arranged on the periphery of the output piece. The limiting device comprises a limiting part, and the rotation tracks of the limiting part and the limited part are intersected; before the output piece reaches the switching-off position, the limited part makes contact with the limiting part to enable the limiting device to deform, the limiting device is reset under the action of self-elasticity until the limited part crosses the limiting part, and the reset limiting part blocks the side, rotating towards the switching-on position, of the limited part so as to limit the output piece to rebound towards the switching-on position. When the driving shaft executes a switching-on action, the driving shaft directly or indirectly acts on the output piece or the limiting device so as to relieve the blocking of the limiting part on the limited part. The device has the characteristic of effectively preventing the output piece from rebounding.

Description

Technical Field

[0001] This application relates to the electrical field, specifically to disconnecting switches, and more specifically to the operating unit of a disconnecting 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] Currently, this type of rotary disconnect switch mainly consists of an operating unit and a switching unit. Both the operating unit and the switching unit are independent units. The operating unit has an operating mechanism with an energy storage structure, and the switching unit has a moving contact. The output component of the operating mechanism is connected to the moving contact, thereby driving the moving contact to rotate.

[0004] Currently, this type of switch also has a problem: because the operating mechanism has an energy storage structure, when the output component rotates to the open position under the force of the energy storage structure, the output component will rotate back to the closed position by a certain angle due to the reaction force, and cannot remain in the open position for a long time. This may cause the moving contact in the switch unit to fall back, so that the arc cannot be extinguished, and in severe cases, the arc will reignite.

[0005] The conventional approach to solving this rotation problem is to add a secondary energy storage spring. During the energy release process of the original energy storage structure, the secondary energy storage spring stores energy and then applies a directional force to the output component towards the open position. This force can eliminate the rotational force on the output component caused by the original energy storage structure, allowing the output component to continue rotating to the open position. However, this structure of adding a secondary energy storage spring not only makes the mechanism more complex but also increases the operating force (the original energy storage structure needs to store energy for the secondary energy storage spring, which inevitably requires a spring with greater elasticity, thus increasing the required operating force).

[0006] Therefore, designing a method that solves the problem of output component rotation without increasing spring force is a direction 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 unit.

[0008] This application provides: an operating unit comprising a drive shaft, a housing, an energy storage mechanism, and an output component; the output component is rotatably disposed relative to the housing, and has a closed position and a closed position; the drive shaft is rotatably disposed relative to the housing for allowing a user to perform a closing or opening action; the energy storage mechanism is connected to the drive shaft, and the drive shaft stores energy and then releases energy during both closing and opening actions, after which it pushes the output component to the open / closed position; wherein the output component has a limiting part, which is disposed at an eccentric position of the output component and rotates synchronously with the output component; the housing also contains a... The flexible limiting device is located around the output component. The limiting device includes a limiting part, and the rotation trajectories of the limiting part and the restricted part intersect. Before the output component reaches the open position, the restricted part contacts the limiting part, causing the limiting device to deform. After the restricted part passes the limiting part, the limiting device resets under its own elastic force. After resetting, the limiting part blocks the side of the restricted part from rotating in the direction of the closed position, thereby limiting the output component from rebounding to the closed position. When the drive shaft performs the closing action, the drive shaft acts directly or indirectly on the output component or the limiting device to release the obstruction of the restricted part by the limiting part.

[0009] In some embodiments of this application, the rotation angle between the position where the limiting part blocks the restricted part and the opening position is A, and A is not greater than 6°.

[0010] In some embodiments of this application, the drive shaft has a pushing part, which is arranged to rotate synchronously with the drive shaft. During the closing action, the pushing part acts on the output component to generate a rotational force in the closing direction. Under the action of the rotational force, the limiting part contacts the limiting part, causing the limiting device to deform until the limiting part passes the limiting part, thereby releasing the obstruction between the limiting part and the limiting part. After the limiting part passes, the limiting device resets under its own elastic force.

[0011] In some embodiments of this application, the limiting device further includes a return spring and a first channel; a portion of the limiting part is located within the first channel and is rotatably and slidably disposed relative to the first channel; the limiting part has a first position, a second position, and a third position; the return spring is connected to the limiting part and is used to provide a biasing force to restore the limiting part to the first position; before the output member reaches the open position, the limiting part pushes the limiting part to rotate from the first position to the second position and the return spring deforms; after the limiting part passes the limiting part, the limiting part returns to the first position under the action of the return spring, and the limiting part is blocked under the combined action of the return spring; when the drive shaft performs the closing action, the limiting part contacts the limiting part under the action of rotational force, pushing the limiting part to slide from the first position to the third position; after the limiting part passes the limiting part, the block between the limiting part and the limiting part is released; after the limiting part passes the limiting part, the limiting part returns to the first position under the action of the return spring.

[0012] In some embodiments of this application, the limiting part has a main body component and a connecting pin. The main body component is used to cooperate with the limiting part and to connect with a return spring. The connecting pin is disposed in a first channel. The main body component is rotatably and slidably disposed with the first channel through the connecting pin. The length dimension of the first channel is larger than that of the connecting pin, and the width dimension matches that of the connecting pin. One end of the length direction of the first channel is a closed end. When the limiting part is in the first position, the return spring acts on the main body component to make the connecting pin abut against the closed end. When the limiting part switches between the first position and the second position, the connecting pin always abuts against the closed end. When the limiting part slides from the first position to the third position, the connecting pin moves away from the closed end.

[0013] In some embodiments of this application, the closed end is arc-shaped, and the connecting pin is used to adapt to the shape of the surface that is in contact with the closed end.

[0014] In some embodiments of this application, the connecting pin is integrally formed with the main body component, and the movement of the connecting pin and the main body component is synchronized.

[0015] In some embodiments of this application, the connecting pin and the main body component are formed separately, the connecting pin and the main body component are fastened together, and the movement of the connecting pin and the main body component is synchronized.

[0016] In some embodiments of this application, the connecting pin and the main body component are formed separately, and the main body component is sleeved on the connecting pin; when switching between the first position and the third position, the connecting pin slides synchronously with the main body component; when switching between the first position and the second position, the main body component rotates relative to the connecting pin.

[0017] In some embodiments of this application, the first channel is directly formed on the outer casing, one end of the return spring is connected to the limiting part, and the other end is connected to the outer casing.

[0018] In some embodiments of this application, a bracket is fixed inside the housing, a first channel is opened on the bracket, one end of the return spring is connected to the limiting part, and the other end is connected to the bracket.

[0019] In some embodiments of this application, the limiting part includes a first surface and a second surface; before the output member reaches the open position, the limiting part rotates from the first position to the second position by contacting the first surface; after the limiting part passes the limiting part, the limiting part returns to the first position under the action of the reset spring, and the limiting part is blocked by the second surface of the limiting part.

[0020] In some embodiments of this application, the first surface and the second surface are both planes, and the two are set at an angle; or, the first surface and the second surface are both arc surfaces, and the tangents of the two are set at an angle; or, one of the first surface and the second surface is an arc surface and the other is a plane, and the tangent of the arc surface is set at an angle to the plane.

[0021] In some embodiments of this application, the limiting device is a spring sheet or spring wire, and the limiting device is directly or indirectly fixed to the outer casing. The limiting part is a protruding structure, and the limiting device also has a locking groove continuous with the protruding structure. When the output component changes from the closed position to the open position, the limiting part contacts the protruding structure, causing the limiting device to deform until the limiting part passes over the protruding structure and enters the locking groove. The limiting device then partially restores its deformation, causing the protruding structure to block the limiting part from rotating in the direction of the closed position. When the drive shaft performs the closing action, the limiting part disengages from the locking groove under the action of rotational force and contacts the protruding structure, causing the limiting device to deform. After the limiting part passes over the limiting part, the obstruction between the limiting part and the limiting part is released. After disengaging from the limiting device, the limiting device fully recovers its original state.

[0022] In some embodiments of this application, the limiting device includes a fixed section and a suspended section. The fixed section is directly or indirectly fixed to the outer shell, and the suspended section is connected to the fixed section. The protruding structure and the locking groove are formed by continuously bending a portion of the suspended section. There is a gap between the suspended section and the surrounding area to allow the suspended section to deform.

[0023] The advantages of this application compared to the prior art are: First, as the power output component of the operating unit to the switching unit, the energy storage structure of the operating mechanism acts directly on the output component. Therefore, blocking the output component can solve the problem of the moving contact falling back from the source, and the anti-falling effect is more obvious.

[0024] Secondly, by blocking the movement of the moving contact, it is not necessary to add an extra set of energy storage springs as in existing technologies. This not only simplifies the structure (because adding an energy storage spring requires considering the logical relationship between the two sets of energy storage springs, which would make the design of the operating mechanism too complicated), but also facilitates assembly (because installing energy storage springs is relatively laborious). Attached Figure Description

[0025] 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.

[0026] Figure 1A perspective view of an isolating switch according to an embodiment of this application is shown; Figure 2 A perspective view of the operating unit according to an embodiment of this application is shown; Figure 3 A schematic diagram of the drive shaft, energy storage mechanism, and output 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 output component in an embodiment of this application is shown; Figure 6 An exploded view of the drive shaft, connecting spring, and transmission component 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 8 This illustration shows a schematic diagram of the energy storage mechanism at a critical point during the closing action in an embodiment of this application; Figure 9 This illustration shows a schematic diagram of the energy storage mechanism completing the closing operation in an embodiment of this application; Figure 10 This illustration shows a schematic diagram of the energy storage mechanism at a critical point during the tripping action in an embodiment of this application; Figure 11 A schematic diagram and a partial enlarged view of one embodiment of the flexible limiting device in this application are shown; Figure 12 This illustration shows a schematic diagram of an embodiment of the flexible limit device in which the output element is in the closed state. Figure 13 This illustration shows a schematic diagram of one mode of the limiting device in an embodiment of this application, when the output component begins to contact the limiting device; Figure 14 This illustration shows a schematic diagram of one mode of the limit device in an embodiment of this application, where the output component is in the open state and locking is completed; Figure 15 A schematic diagram of another limiting device in an embodiment of this application is shown; Figure 16 A schematic diagram and a partial enlarged view of the bracket and return spring of another limiting device in an embodiment of this application are shown; Figure 17 A schematic diagram of the limiting part of another limiting device in an embodiment of this application is shown; Figure 18 This illustration shows a schematic diagram of the restricted part about to contact the limiting part (the limiting part is in the first position) during the tripping operation in an embodiment of this application. Figure 19A schematic diagram is shown in which the restricted part crosses the limiting part (the limiting part is in the second position) during the tripping operation in an embodiment of this application; Figure 20 This illustration shows a schematic diagram of the restricted part being blocked by the limiting part (the limiting part is in the first position) during the tripping operation in an embodiment of this application. Figure 21 This diagram illustrates the effect of the restricted part pushing the limiting part to slide to the third position during the closing operation in an embodiment of this application. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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

[0032] like Figures 1-21 As shown, an embodiment of this application is an isolating switch.

[0033] This disconnector is a rotary disconnector, which includes an operating unit 100 and a switching unit 200. The operating unit 100 can drive the switching unit 200 to open and close the circuit.

[0034] Specifically, the switch unit 200 includes a moving contact 210 and a stationary contact. The moving contact 210 rotates a certain angle in one direction and then contacts the stationary contact, thus closing the circuit. The moving contact 210 rotates a certain angle in another direction and then separates from the stationary contact, thus opening the circuit.

[0035] The operation unit 100 has an output component 130. The output component 130 is a power output component of the operation unit 100 and is plugged into the moving contact 210 of the switch unit 200, so it can drive the moving contact 210 to rotate.

[0036] Here, the switching unit 200 can be a two-pole structure or a multi-pole structure. There are many ways to assemble it. One way is to assemble a one-pole switching unit 200 at each end of the operating unit 100, that is, the output component 130 is simultaneously plugged into the moving contact 210 of the two-pole switching units 200. Alternatively, the operating unit 100 can be assembled with a one-pole switching unit 200 (also called the first switching unit 200, with the output component 130 plugged into the moving contact 210 of the first switching unit 200), and the switching units 200 can be arranged and assembled in sequence (the moving contacts 210 of the switching units 200 are plugged in sequentially).

[0037] The internal structure of the switch unit 200 is common knowledge and will not be described in detail here.

[0038] The operating unit 100 includes a drive shaft 110, an energy storage structure, a housing 120, an output component 130, and a limiting device 140.

[0039] 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.

[0040] The energy storage mechanism includes a transmission component 150 and two energy storage springs 160.

[0041] Here, the energy storage spring 160 is connected between the housing 120 and the transmission member 150. The energy storage spring 160 has a first energy release state, a second energy release state, and a critical point state.

[0042] When performing the closing action, the energy storage 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 energy storage 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 output component 130 to reach the closing position).

[0043] When the circuit breaker is opened, the energy storage 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 energy storage 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 output component 130 to reach the opening position).

[0044] The state change of the energy storage spring 160 is caused by the rotation of the transmission component 150. Specifically, the transmission component 150 is mounted on the drive shaft 110 and is rotatably set. When the drive shaft 110 performs closing and opening actions, it can drive the transmission component 150 to rotate, thus driving the energy storage spring 160 to change state.

[0045] The transmission component 150 has a first drive unit 152 and a second drive unit 153. When the drive shaft 110 performs a closing action, the energy storage mechanism first stores energy and then releases it. During energy release, the second drive unit 153 pushes the output component 130, causing the output component 130 to rotate to the closing position. Conversely, when the drive shaft 110 performs a opening action, the energy storage mechanism first stores energy and then releases it. During energy release, the first drive unit 152 pushes the output component 130, causing the output component 130 to rotate to the opening position.

[0046] The output component 130 is rotatably mounted around the second axis O2 relative to the housing 120. Here, the first axis O1 and the second axis O2 are perpendicular to each other. The output component 130 has an open position and a closed position, which are the same as those of the moving contact 210. The output component 130 has a driven portion 132, which is a protrusion that rotates to different positions under the action of different driving components.

[0047] The structure in which the drive shaft 119 drives the energy storage mechanism to store energy, and the energy storage mechanism releases energy to drive the output component 130 to the open and closed positions is common knowledge and will not be described in detail here.

[0048] The limiting device 140, being elastic, is housed within the housing 120. The limiting device 140 has a limiting portion 141 and is disposed around the periphery of the output member 130. In this embodiment, the limiting device 140 is positioned near the open position of the output member 130. However, it is not necessary to position it near the open position; it can be positioned elsewhere, as long as it ensures that the contact between the limiting portion 131 and the limiting portion 141 occurs before the output member 130 reaches the open position, and that the limiting portion 141 can effectively block the limiting portion 131.

[0049] The output component 130 has a synchronously moving restricted portion 131 (eccentrically positioned, offset from the rotation center of the output component 130), which rotates with the output component 130. The rotation trajectory of the restricted portion 131 intersects with that of the limiting portion 141. Just before the output component 130 reaches the open position, the restricted portion 131 contacts the limiting portion 141, causing the limiting device 140 to deform (due to its elasticity). After the restricted portion 131 passes the limiting portion 141, the limiting device 140 resets under its own elastic force. After resetting, the limiting portion 141 blocks the side of the restricted portion 131 that rotates towards the closing position, thus limiting the output component 130 from rebounding towards the closing position. In effect, the rebound force of the output component 130 after reaching the open position is less than the force exerted by the limiting portion 141 on the restricted portion 131, thus preventing the restricted portion 131 from passing the limiting portion 141 and preventing rebound.

[0050] This structural design achieves the following effects: First, the output component 130 serves as the power output component of the operating unit 100 to the switching unit 200. The energy storage structure of the operating mechanism acts directly on the output component 130. Therefore, locking the output component 130 can solve the problem of the moving contact 210 falling back from the source, and the anti-falling effect is more obvious.

[0051] Secondly, by preventing the moving contact 210 from falling back in this way, it is not necessary to set up an additional set of energy storage springs 160 as in the existing technology. This not only simplifies the structure (because adding a set of energy storage springs 160 requires considering the logical relationship between the two sets of energy storage springs 160, which would make the design of the operating mechanism too complicated), but also facilitates assembly (because the installation of energy storage springs 160 is relatively laborious).

[0052] Here, the unlocking of the limiting part 141 and the restricted part 131 is achieved by the drive shaft 110 performing a closing action. That is, when performing the closing action, the drive shaft 110 acts directly or indirectly on the output member 130 or the limit device 140 to release the locking of the limiting part 141 and the restricted part 131. The action on the output member 130 or the limit device 140 here includes both direct and indirect actions, as long as the unlocking of the limiting part 141 and the restricted part 131 is caused by the closing action of the drive shaft 110.

[0053] As a preferred method, a pusher 112 is provided on the drive shaft 110. The pusher 112 rotates synchronously with the drive shaft 110, and the pusher 112 is essentially a cam structure. When the drive shaft 110 performs the closing action, the pusher 112 contacts the output member 130, causing it to generate a rotational force in the closing position. Under the action of the rotational force, the limiting part 131 contacts the limiting part 141, causing the limiting device 140 to deform until the limiting part 131 passes over the limiting part 141, thereby releasing the obstruction between the limiting part 141 and the limiting part 131. After the limiting part 131 has passed over, the limiting device 140 returns to its original position under its own elastic force. In other words, the force exerted by the limiting part 141 on the limiting part 131 is less than the force exerted by the rotational force on the limiting part 131, thus allowing the limiting device 140 to deform and the limiting part 131 to pass over.

[0054] The limiting part 141 and the restricted part 131 are unlocked by the closing action of the drive shaft 110. This operation is very smooth and continuous. After each opening, the next action will inevitably be closing. The unlocking is completed during the closing action and does not affect the next closing action of the disconnecting switch.

[0055] Here, the blocking effect of the limiting part 141 on the restricted part 131 can occur either when the output element 130 is in the open position or when there is a certain amount of deflection between the output element 130 and the open position. The most preferred method is that the limiting part 141 blocks the restricted part 131 precisely when the output element 130 reaches the open position; that is, when the output element 130 reaches the open position, the limiting part 141 blocks the restricted part 131. This structure provides the best anti-rebound effect, but also places the highest precision requirements on each component.

[0056] As a preferred embodiment, the deflection between the blocking position and the open position should not exceed 6°. That is, the rotation angle between the position where the limiting part 141 blocks the restricted part 131 and the open position is A (equivalent to the output component 130 rebounding an angle A after reaching the open position before being blocked by the limiting part 141), and A should not exceed 6°. This preferred embodiment also effectively prevents rebound, while reducing the precision requirements for each component.

[0057] Here, the restricted part 131 can be integrated with the output part 130. For example, if the output part 130 is made of cast iron, the restricted part 131 is also made of cast iron, and the two are integrally formed. Of course, the material of the output part 130 is not limited to cast iron; other materials can also be used, such as powder alloys, high-strength plastics, etc., as long as the strength meets the transmission requirements (transmission requirements refer to normal operation and resistance to damage).

[0058] Of course, the restricted part 131 and the output part 130 can also be two independently molded components, which can then be fastened together by a fastening structure. There are many ways to fasten them together, such as interference fit, screw fastening, riveting, etc. This independent molding method can simplify the mold forming of the output part 130.

[0059] Here, the contact surface between the restricted part 131 and the limiting part 141 can be an arc surface, which can reduce the contact friction between the limiting device 140 and the limiting device.

[0060] The limiting device 140 can have many structural designs, including purely elastic components and combinations of elastic components with other structures.

[0061] As a purely elastic element, the limiting device 140 is a spring plate 140a, which is directly fixed to the housing 120. The limiting part 141 is a protruding structure on the spring plate 140a, and the spring plate 140a also has a locking groove 141a that is continuous with the limiting part 141. Here, continuity means that there is a common wall between the limiting part 141 and the locking groove 141a. When the output member 130 changes from the closed position to the open position (just before reaching the open position), the limiting part 131 contacts the spring plate 140a, causing it to deform. After the limiting part 131 passes the limiting part 141, it reaches the corresponding area of ​​the locking groove 141a. At this time, the spring plate 140a recovers part of its deformation (not fully recovered), so that the limiting part 131 is in the locking groove 141a. At this time, the output member 130 also reaches the open position, and the limiting part 141 is also located on the side of the limiting part 131 (the side that rotates towards the closed position). In this structure, the rebound force of the output component 130 towards the closed position is insufficient to break free from the locking groove 141a and the limiting part 141. In other words, the force exerted by the limiting part 141 on the restricted part 131 is greater than the rebound force, thus preventing rebound. When the drive shaft 110 performs the closing action, the restricted part 131, under the action of rotational force, squeezes the limiting part 141 while disengaging from the locking groove 141a, causing the spring plate 140a to deform. The spring plate 140a only fully recovers its deformation after the restricted part 131 has completely disengaged from the spring plate 140a. Simply put, when the restricted part 131 is under the action of rotational force, the force exerted by the restricted part 131 on the spring plate 140a is greater than the force of the spring plate 140a that prevents the restricted part 131 from disengaging, forcibly disengaging the restricted part 131 from the spring plate 140a.

[0062] Here, the spring sheet 140a can also be indirectly fixed to the housing 120, for example, by setting a spring mounting base, the spring sheet 140a is fixed to the spring mounting base, and the spring mounting base is fixed to the housing 120 by screws.

[0063] For the spring sheet 140a, it includes a fixed section 140a1 and a suspended section 140a2.

[0064] The fixing segment 140a1 is directly or indirectly fixed to the outer casing 120. Specifically, the fixing method can be by snapping into the slot 121, for example, the outer casing 120 has a slot 121, and the fixing segment 140a1 snaps into the slot 121 to form a fixation. Alternatively, the fixing segment 140a1 can wrap around a protruding structure of the outer casing 120. Here, the fixing segment 140a1 can be two segments or one segment. When there are two segments, the two fixing segments 140a1 are connected by a suspended segment 140a2. In this case, the spring sheet 140a is connected to the outer casing 120 through the two fixing segments 140a1, resulting in a more secure installation. When there is only one segment, the suspended segment 140a2 will be more easily deformed, reducing the resistance to the output component 130.

[0065] The suspended section 140a2 is connected to the fixed section 140a1, and the suspended section 140a2 is also the section that mainly undergoes deformation. Here, the suspended section 140a2 refers to the gap between this section and the outer shell 120, which ensures that the suspended section 140a2 has enough space to complete its deformation.

[0066] Here, the suspended section 140a2 has a continuous bending structure, and the locking groove 141a and the limiting part 141 are both on the suspended section 140a2.

[0067] When the drive shaft 110 performs the closing action, the restricted part 131 deforms the suspended section 140a2 due to the rotational force of the output member 130 acting on the locking groove 141a, thereby breaking free from the locking groove 141a.

[0068] As another preferred approach, the limiting device 140 is formed by combining an elastic element with other structures. Specifically, the limiting device 140 includes a limiting part 141, a return spring 142, and a first channel 170a.

[0069] Here, the first channel 170a can be directly formed on the outer casing 120 or on the bracket 170, which is then fixed to the outer casing 120 by a fastening structure (such as screws, rivets, snap-fits, etc.). In this embodiment, the first channel 170a is formed on the bracket 170.

[0070] The first channel 170a can also be described as a strip-shaped groove. The limiting part 141 is partially located in the first channel 170a, and the limiting part 141 and the first channel 170a are both rotatably and slidably configured.

[0071] Here, the limiting part 141 has three positions, namely the first position S1, the second position S2 and the third position S3.

[0072] One end of the reset spring 142 is connected to the limiting part 141, and the other end is connected to the bracket 170 (if the first channel 170a is opened on the housing 120, the reset spring 142 is connected to the housing 120). The reset spring 142 provides the limiting part 141 with a biasing force to restore it to the first position S1.

[0073] The second position S2 is the position after the limiting part 141 has been rotated from the first position S1 after being contacted by the restricted part 131.

[0074] The third position S3 is the position after the limiting part 141 slides from the first position S1 after being contacted by the restricted part 131.

[0075] Specifically, before the output component 130 reaches the open position, the restricted part 131 pushes the restricted part 141 to rotate from the first position S1 to the second position S2 and the reset spring 142 deforms. After the restricted part 131 passes the restricted part 141, the restricted part 141 returns to the first position S1 under the action of the reset spring 142. The restricted part 141 and the reset spring 142 work together to block the restricted part 131.

[0076] When the drive shaft performs the closing action, the restricted part 131 contacts the restricted part 141 under the action of rotational force, pushing the restricted part 141 to slide from the first position S1 to the third position S3. After the restricted part 131 passes the restricted part 141, the obstruction between the restricted part 141 and the restricted part 131 is released. At the same time, the restricted part 141 returns to the first position S1 under the action of the return spring 142.

[0077] This transmission principle is very simple, and the blocking effect is quite reliable.

[0078] In this approach, as a preferred method, the return spring 142 is a compression spring. Of course, other methods such as torsion springs and tension springs can also be used.

[0079] For the limiting part 141, there are many material options, such as engineering plastics or metals.

[0080] Here, the limiting part 141 has a main body member 1410 and a connecting pin 1420. The return spring 142 is connected to the main body member 1410, and the limiting part 131 is in contact with and blocked by the main body member 1410.

[0081] The connecting pin 1420 is disposed within the first channel 170a, and the main component 1410 is rotatably and slidably disposed with the first channel 170a via the connecting pin 1420. Here, the first channel 170a has a length dimension larger than the connecting pin 1420, and a width dimension matching the connecting pin 1420. One end of the first channel 170a is a closed end 170a1. When the limiting part 141 is in the first position S1, the return spring 142 acts on the main component 1410, causing the connecting pin 1420 to abut against the closed end 170a1. When the limiting part 141 switches between the first position S1 and the second position S2, the connecting pin 1420 always abuts against the closed end 170a1. When the limiting part 141 slides from the first position S1 to the third position S3, the connecting pin 1420 moves away from the closed end 170a1. This structural relationship between the connecting pin 1420 and the first channel 170a makes it very easy to achieve rotational and sliding arrangements.

[0082] Here, there are many ways to mate the connecting pin 1420 and the main component 1410. They can be integrally formed parts, moving synchronously (whether sliding or rotating). They can also be separately formed but fastened together (e.g., by interference fit, screw fastening, or riveting), in which case they also move synchronously. Alternatively, they can be separately formed, with a through hole in the main component 1410 for fitting onto the connecting pin 1420. In this case, the transition from the first position S1 to the third position S3 involves synchronous sliding of the main hook and the connecting pin 1420; while the transition from the first position S1 to the second position S2 involves relative rotation.

[0083] For the closed end 170a1, its shape is arc-shaped, and the surface of the corresponding connecting pin 1420 that is in contact with it is also arc-shaped. The two are compatible and can facilitate the realization of rotational movement.

[0084] The main component 1410 includes a first surface 1410a and a second surface 1410b. Before the output component 130 reaches the open position, the limiting part 131 contacts the first surface 1410a, causing the limiting part 141 to rotate from the first position S1 to the second position S2. After the limiting part 131 passes the limiting part 141, the limiting part 141 returns to the first position S1 under the action of the return spring 142, and the limiting part 131 is blocked by the second surface 1410b. Furthermore, when the driven part rotates due to rotational force, the driven part also pushes the second surface 1410b, causing the limiting part 141 to slide towards the third position S3.

[0085] In this embodiment, both the first surface 1410a and the second surface 1410b are planes with an obtuse angle. Alternatively, a right angle or an acute angle can also be used. The angle between the first surface 1410a and the second surface 1410b can be set according to the actual position of the driven part. Of course, besides being planes, the first surface 1410a and the second surface 1410b can also be curved surfaces or a combination of a plane and a curved surface, as long as there is an angle between the tangents of the curved surfaces or between the tangents of the curved surfaces and the plane.

[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 unit comprising a drive shaft, a housing, an energy storage mechanism, and an output component; the output component is rotatably disposed from the housing and has a closed position and a closed position; the drive shaft is rotatably disposed from the housing for allowing a user to perform a closing or opening action; the energy storage mechanism is connected to the drive shaft, and the drive shaft stores energy and then releases energy during both the closing and opening actions, and after energy release, pushes the output component to the open / closed position; characterized in that: The output component has a limiting part, which is located at an eccentric position and rotates synchronously with the output component. An elastic limiting device is also provided inside the housing, located around the periphery of the output component. The limiting device includes a limiting part, and the rotation trajectories of the limiting part and the limiting part intersect. Before the output component reaches the open position, the limiting part contacts the limiting part, causing the limiting device to deform. The limiting device resets under its own elastic force after the limiting part passes the limiting part. After resetting, the limiting part blocks the side of the limiting part from rotating towards the close position, thus limiting the output component's rebound towards the close position. When the drive shaft performs the closing action, it acts directly or indirectly on the output component or the limiting device to release the limiting part's obstruction of the limiting part.

2. The operating unit according to claim 1, characterized in that: The rotation angle between the position where the limiting part blocks the restricted part and the opening position is A, and A is not greater than 6°.

3. An operating unit according to claim 1, characterized in that: The drive shaft has a pushing part, which is arranged to rotate synchronously with the drive shaft; During the closing action, the drive shaft pushes the output component to generate a rotational force in the closing direction. Under the action of the rotational force, the restricted part contacts the limiting part, causing the limiting device to deform until the restricted part passes the limiting part, thereby releasing the obstruction between the limiting part and the restricted part. After the restricted part has passed, the limiting device resets under its own elastic force.

4. An operating unit according to claim 3, characterized in that: The limiting device also includes a reset spring and a first channel; a portion of the limiting part is located within the first channel and is rotatably and slidably disposed relative to the first channel; the limiting part has a first position, a second position, and a third position; the reset spring is connected to the limiting part and is used to provide a biasing force to restore the limiting part to the first position; before the output member reaches the open position, the limiting part pushes the limiting part to rotate from the first position to the second position and the reset spring deforms; after the limiting part passes the limiting part, the limiting part returns to the first position under the action of the reset spring, and the limiting part is blocked under the combined action of the reset spring; When the drive shaft performs the closing action, the restricted part contacts the limiting part under the action of rotational force, pushing the limiting part to slide from the first position to the third position. After the restricted part passes the limiting part, the obstruction between the limiting part and the restricted part is released. After the restricted part has passed, the restricted part returns to the first position under the action of the return spring.

5. An operating unit according to claim 4, characterized in that: The limiting part has a main body component and a connecting pin. The main body component is used to cooperate with the limiting part and to connect with the return spring. The connecting pin is disposed in the first channel. The main body component is rotatably and slidably disposed with the first channel through the connecting pin. The length dimension of the first channel is larger than that of the connecting pin, and the width dimension matches that of the connecting pin. One end of the length direction of the first channel is a closed end. When the limiting part is in the first position, the return spring acts on the main body component to make the connecting pin abut against the closed end. When the limiting part switches between the first position and the second position, the connecting pin always abuts against the closed end. When the limiting part slides from the first position to the third position, the connecting pin moves away from the closed end.

6. An operating unit according to claim 5, characterized in that: The closed end is arc-shaped, and the connecting pin is used to adapt the shape of the surface that is in contact with the closed end. Alternatively, the connecting pin is integrally formed with the main component, and the movement of the connecting pin and the main component is synchronized; Alternatively, the connecting pin and the main component are formed separately, with the connecting pin and the main component being fastened together, and the movement of the connecting pin and the main component being synchronized; Alternatively, the connecting pin and the main component are formed separately, with the main component fitted onto the connecting pin; when switching between the first and third positions, the connecting pin slides synchronously with the main component; when switching between the first and second positions, the main component rotates relative to the connecting pin.

7. An operating unit according to claim 4, characterized in that: The first channel is directly opened on the outer shell, and one end of the return spring is connected to the limiting part, and the other end is connected to the outer shell; Alternatively, a bracket is fixed inside the outer casing, the first channel is opened on the bracket, one end of the return spring is connected to the limiting part, and the other end is connected to the bracket.

8. An operating unit according to claim 4, characterized in that: The limiting part includes a first surface and a second surface; before the output member reaches the open position, the limiting part rotates from the first position to the second position by contacting the first surface; after the limiting part passes the limiting part, the limiting part returns to the first position under the action of the return spring, and the limiting part is blocked by the second surface of the limiting part. Both the first and second surfaces are planes, with an angle between them; or, both the first and second surfaces are curved surfaces, with their tangents forming an angle; or, one of the first and second surfaces is a curved surface and the other is a plane, with the tangent of the curved surface forming an angle with the plane.

9. An operating unit according to claim 3, characterized in that: The limiting device is a spring sheet or spring wire, which is directly or indirectly fixed to the outer shell. The limiting part is a protruding structure, and the limiting device also has a locking groove that is continuous with the protruding structure. When the output component changes from the closed position to the open position, the limiting part contacts the protruding structure, causing the limiting device to deform until the limiting part passes over the protruding structure and enters the locking groove. The limiting device then restores part of its deformation, causing the protruding structure to block the limiting part from rotating in the direction of the closed position. When the drive shaft performs the closing action, the restricted part disengages from the locking groove under the action of rotational force and contacts the protruding structure, causing the limit device to deform. After the restricted part passes the limiting part, the obstruction between the limiting part and the restricted part is released. After disengaging from the limit device, the limit device is fully restored.

10. An operating unit according to claim 9, characterized in that: The limiting device includes a fixed section and a suspended section. The fixed section is directly or indirectly fixed to the outer shell, and the suspended section is connected to the fixed section. The protruding structure and locking groove are formed by continuous bending of part of the suspended section. There is a gap between the suspended section and the surrounding area to allow the suspended section to deform.

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