Operating mechanism of change-over switch

Abstract

The operating mechanism of the change-over switch comprises a turntable, an energy storage mechanism and a main shaft, and the energy storage mechanism is connected between a turntable eccentric shaft and a main shaft eccentric shaft; the operating mechanism further comprises a main shaft locking mechanism. The main shaft locking mechanism comprises at least one locking piece and at least one elastic piece. When the main shaft rotates to the main shaft position, the elastic piece drives the locking piece to lock the main shaft; when the rotating disc rotates from one rotating disc position to the other rotating disc position, due to the fact that the locking piece locks and restrains the main shaft, the rotating disc rotates to drive the energy storage mechanism to store energy firstly and then drive the locking piece to unlock the main shaft, and the energy storage mechanism releases energy to drive the main shaft to rotate from one main shaft position to the other main shaft position. And the main shaft locking mechanism locks the main shaft again. The operating mechanism of the change-over switch is suitable for a two-position change-over switch and a three-position change-over switch, the opening and closing speed is irrelevant to manpower, the breaking capacity is improved, the structure is simplified, and other mechanisms except the operating mechanism are prevented from driving the main shaft to rotate.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to an operating mechanism for a changeover switch. Background Technology

[0002] The purpose of a dual-power automatic transfer switch is to automatically switch to a backup power supply when the primary power source suddenly fails or is interrupted, allowing equipment to continue operating normally. Many industries and departments have extremely high requirements for power supply reliability. To ensure power continuity, dual-power automatic transfer switches are used in many critical situations to supply power to electrical appliances. As an essential device for power switching, the technical performance requirements for these switches are becoming increasingly stringent.

[0003] Existing dual-power automatic transfer switches have slow switching speeds, failing to achieve rapid opening or closing, resulting in low breaking capacity and a short product lifespan. Furthermore, when the main shaft is in either the main power closed or backup power closed position, there is no limiting structure for the main shaft, making it impossible to prevent other mechanisms outside the operating mechanism from causing the main shaft to flip. Alternatively, the existing operating mechanism's transmission or main shaft limiting and unlocking structures are overly complex, leading to low reliability in switching between the two power sources. Utility Model Content

[0004] The purpose of this utility model is to overcome at least one defect of the prior art and provide an operating mechanism for a changeover switch.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The operating mechanism of the changeover switch includes a rotating turntable, an energy storage mechanism, and a rotating main shaft. The turntable is capable of reciprocating between at least two turntable positions to drive the main shaft to reciprocate between two main shaft positions.

[0007] The turntable is provided with a turntable eccentric shaft that is eccentrically set to the rotation center of the turntable, and the main shaft is provided with a main shaft eccentric shaft that is eccentrically set to the rotation center of the main shaft. The energy storage mechanism is connected between the turntable eccentric shaft and the main shaft eccentric shaft.

[0008] The operating mechanism further includes a spindle locking mechanism, which includes at least one locking element and at least one elastic element; when the spindle rotates to the spindle position, the elastic element drives the locking element to lock the spindle.

[0009] When the turntable rotates from one turntable position to another, the rotation of the turntable first drives the energy storage mechanism to store energy, and then drives the locking mechanism to release the lock on the main shaft, so that the energy storage mechanism releases energy to drive the main shaft to rotate from one main shaft position to another, and the main shaft locking mechanism locks the main shaft again.

[0010] Optionally, the turntable can rotate to at least three turntable positions, including a first turntable position, a middle turntable position, and a second turntable position, which are respectively applied to drive the spindle to rotate to three spindle positions, namely the main power supply closed position, the dual-open position, and the backup power supply closed position.

[0011] When the turntable rotates from the middle position to the first position, or from the first position to the middle position, or from the middle position to the second position, or from the second position to the middle position, the rotation of the turntable first drives the energy storage mechanism to store energy, and then drives the locking mechanism to release the lock on the main shaft, so that the energy storage mechanism releases energy and drives the main shaft to rotate to the corresponding main power supply closed position or dual open position or backup power supply closed position or dual open position.

[0012] Optionally, when the turntable rotates from the middle position to the first position, the locking component is driven to release the lock on the main shaft when it reaches the first position, so that the energy storage mechanism releases energy to drive the main shaft to rotate to the main power supply closed position.

[0013] And / or, when the turntable rotates from the first position to the middle position, the locking element is driven to release the lock on the main shaft when the turntable reaches the middle position, so that the energy storage mechanism releases energy to drive the main shaft to rotate to the double split position;

[0014] And / or, when the turntable rotates from the middle position to the second position, the locking component is driven to release the lock on the main shaft when the turntable reaches the second position, so that the energy storage mechanism releases energy to drive the main shaft to rotate to the backup power supply closed position.

[0015] And / or, when the turntable rotates from the second position to the middle position, the locking element is driven to release the lock on the main shaft when the turntable reaches the middle position, so that the energy storage mechanism releases energy to drive the main shaft to rotate to the double split position.

[0016] Optionally, the spindle locking mechanism includes two locking elements, which are a first lever and a second lever that are rotatably configured.

[0017] When the turntable rotates to the first position, the first lever is driven to release the lock on the main shaft, causing the energy storage mechanism to release energy and drive the main shaft to rotate to the main power supply closed position. At the same time, the second elastic element drives the second lever to lock the main shaft, preventing the main shaft from rotating to the double-open position.

[0018] When the turntable rotates from the first position to the middle position, the second lever is driven to release the lock on the main shaft, causing the energy storage mechanism to release energy and drive the main shaft to rotate to the double split position. The second elastic element drives the second lever to lock the main shaft, preventing the main shaft from rotating toward the backup power supply position. The first elastic element drives the first lever to lock the main shaft, preventing the main shaft from rotating toward the main power supply position.

[0019] When the turntable rotates to the second position, the second lever is driven to release the lock on the main shaft, causing the energy storage mechanism to release energy and drive the main shaft to rotate to the backup power supply closed position. At the same time, the first elastic element drives the first lever to lock the main shaft, preventing the main shaft from rotating to the double-splitting position.

[0020] When the turntable rotates from the second position to the middle position, the first lever is driven to release the lock on the main shaft, causing the energy storage mechanism to release energy and drive the main shaft to rotate to the double-split position. The second elastic element drives the second lever to lock the main shaft, preventing the main shaft from rotating towards the backup power supply position. The first elastic element drives the first lever to lock the main shaft, preventing the main shaft from rotating towards the main power supply position.

[0021] Optionally, the first lever is provided with a first lever locking part, the second lever is provided with a second lever locking part, and the main shaft is provided with a first locking part, a second locking part, a third locking part, and a fourth locking part;

[0022] When the turntable is in the middle position and the spindle is in the double-split position, the first locking part is locked to the first lever locking part of the first lever, and the third locking part is locked to the second locking part of the second lever; when the turntable is in the first position and the spindle is in the main power-on position, the fourth locking part is locked to the second locking part of the second lever; when the turntable is in the second position and the spindle is in the backup power-on position, the second locking part is locked to the first lever locking part of the first lever.

[0023] Optionally, a baffle is provided on the spindle, and a first locking part, a second locking part, a third locking part and a fourth locking part are provided on the baffle.

[0024] Optionally, the baffle is a fan-shaped ring structure arranged around the main shaft, having a baffle arc edge, a first baffle straight edge, and a second baffle straight edge. A first locking notch is provided at the connection position between the baffle arc edge and the first baffle straight edge. The first locking notch has a first locking straight edge and a first positioning arc edge. The first positioning arc edge connects between the first locking straight edge and the first baffle straight edge. The first locking part is the first locking straight edge, and the second locking part is the first baffle straight edge. A second locking notch is provided at the connection position between the baffle arc edge and the second baffle straight edge. The second locking notch has a second locking straight edge and a second positioning arc edge. The second positioning arc edge connects between the second locking straight edge and the second baffle straight edge. The third locking part is the second locking straight edge, and the fourth locking part is the second baffle straight edge.

[0025] Optionally, the turntable is provided with a first unlocking protrusion, a second unlocking protrusion, a third unlocking protrusion and a fourth unlocking protrusion, the first lever is provided with a first unlocking engagement structure, the first unlocking engagement structure includes a first engagement part and a second engagement part, the second lever is provided with a second unlocking engagement structure, the second unlocking engagement structure includes a third engagement part and a fourth engagement part;

[0026] When the turntable rotates from the middle position to the first position, the first unlocking protrusion pushes against the first mating part, driving the first lever to release its locking engagement with the main shaft; when the turntable rotates from the first position to the middle position, the fourth unlocking protrusion pushes against the fourth mating part, driving the second lever to release its locking engagement with the main shaft; when the turntable rotates from the middle position to the second position, the third unlocking protrusion pushes against the third mating part, driving the second lever to release its locking engagement with the main shaft; when the turntable rotates from the second position to the middle position, the second unlocking protrusion pushes against the second mating part, driving the first lever to release its locking engagement with the main shaft.

[0027] Optionally, the first lever and the second lever are arranged side by side with intervals. The first end of the first lever is rotatable and the second end of the first lever is provided with a first unlocking engagement structure. The first end of the second lever is rotatable and the second end of the second lever is provided with a second unlocking engagement structure. The side of the first lever with the first lever locking part and the side of the second lever with the second lever locking part are arranged at intervals relative to each other and are located on both sides of the main shaft. The first lever locking part and the second lever locking part are used to lock the main shaft respectively. The turntable drives the first lever and the second lever to release the lock on the main shaft through the first unlocking engagement structure and the second unlocking engagement structure respectively.

[0028] Optionally, the turntable can rotate to two turntable positions, namely the first turntable position and the second turntable position, which are respectively applied to drive the spindle to rotate to two spindle positions, namely the main power supply closed position and the backup power supply closed position;

[0029] When the turntable rotates from the first position to the second position, or from the second position to the first position, the rotation of the turntable first drives the energy storage mechanism to store energy, and then drives the locking mechanism to release the lock on the main shaft, so that the energy storage mechanism releases energy and drives the main shaft to rotate to the corresponding backup power supply closed position or main power supply closed position.

[0030] Optionally, the spindle locking mechanism includes two locking elements, which are a first lever and a second lever that are rotatably configured.

[0031] When the turntable rotates from the first position to the second position, the second lever is driven to release the lock on the main shaft, causing the energy storage mechanism to release energy and drive the main shaft to rotate to the backup power supply closed position. At the same time, the first elastic element drives the first lever to lock the main shaft, preventing the main shaft from rotating to the main power supply closed position.

[0032] When the turntable rotates from the second position to the first position, the first lever is driven to release the lock on the main shaft, causing the energy storage mechanism to release energy and drive the main shaft to rotate to the main power supply closed position. At the same time, the second elastic element drives the second lever to lock the main shaft, preventing the main shaft from rotating to the backup power supply closed position.

[0033] Optionally, the first elastic element also serves as the second elastic element, that is, the first elastic element and the second elastic element are the same elastic element, and the first elastic element is connected between the first lever and the second lever.

[0034] Optionally, the turntable includes a central turntable rotating part, and a turntable operating part and a turntable driving part are respectively provided on the radially opposite sides of the turntable rotating part. The turntable driving part is provided with a turntable eccentric shaft and a receiving cavity located between the turntable eccentric shaft and the turntable rotating part. The main shaft has one end of the main shaft eccentric shaft and an energy storage mechanism placed in the receiving cavity.

[0035] Optionally, when the turntable is located in the middle position and the main shaft is in the double-split position, the rotation center of the turntable, the rotation center of the main shaft, the eccentric shaft of the main shaft, and the eccentric shaft of the turntable are arranged sequentially and alternately along a straight line; and / or, the energy storage mechanism is a spring, with both ends of the spring connected to the eccentric shaft of the turntable and the eccentric shaft of the main shaft.

[0036] Optionally, the turntable eccentric shaft is integrally formed with the turntable, or the turntable eccentric shaft is set in the turntable mounting groove on the turntable and rotates synchronously with the turntable.

[0037] Optionally, the spindle eccentric shaft is integrally formed with the spindle; or, the radial protrusion of the spindle is provided with two spindle protrusions spaced apart along the spindle axial direction, the spindle protrusions are provided with spindle mounting holes, and the spindle eccentric shaft is disposed in the spindle mounting holes and rotates synchronously with the spindle.

[0038] Optionally, it also includes an automatic operating mechanism, which includes a first electromagnetic mechanism, a second electromagnetic mechanism, a first drive rod, and a rotating component. The first drive rod is located between the first electromagnetic mechanism and the second electromagnetic mechanism and has a drive groove. The rotating component is coaxial with the turntable and rotates synchronously. The rotating component includes a push rod that is slidably inserted into the drive groove. The first electromagnetic mechanism and the second electromagnetic mechanism are respectively used to drive the first drive rod to move in opposite directions, so that the first drive rod drives the rotating component through the push rod to drive the turntable to rotate to the corresponding first position and second position of the turntable.

[0039] Optionally, the drive groove has a first drive surface near the second electromagnetic mechanism and a second drive surface near the first electromagnetic mechanism on both sides along its length. The first electromagnetic mechanism drives the first drive rod to move towards the first electromagnetic mechanism by pushing the push rod through the first drive surface. The second electromagnetic mechanism drives the first drive rod to move towards the second electromagnetic mechanism by pushing the push rod through the second drive surface.

[0040] Optionally, the automatic operating mechanism further includes a third electromagnetic mechanism, a second drive rod, and a connecting rod. The connecting rod is rotatably connected to the second drive rod and the rotating component, respectively. The second drive rod is located between the third electromagnetic mechanism and the rotating component. The third electromagnetic mechanism is used to drive the second drive rod, so that the second drive rod drives the rotating component through the connecting rod to drive the turntable to rotate towards the center position of the turntable.

[0041] Optionally, the connecting rod is provided with a sliding groove, and a first rotating arc surface and a second rotating arc surface are provided on both sides of the sliding groove along its length. A transmission shaft is provided on the second drive rod. The transmission shaft is inserted into the sliding groove, rotates and engages with the first rotating arc surface, and can move along the length of the sliding groove. An eccentric shaft is eccentrically provided on the rotating component. The eccentric shaft is inserted into the sliding groove, rotates and engages with the second rotating arc surface, and can move along the length of the sliding groove.

[0042] Optionally, the device also includes a housing, in which a bracket is provided, a main shaft extends out of the housing through the middle, a main shaft locking mechanism is provided inside the housing, a turntable is rotatably mounted on one side of the bracket and located between the main shaft locking mechanism and the bracket, an automatic operating mechanism is located on the other side of the bracket, and one end of the rotating part of the automatic operating mechanism passes through the bracket and is connected to the turntable.

[0043] The operating mechanism of this utility model for a changeover switch is applicable to two-position and three-position changeover switches. It is equipped with a main shaft locking mechanism to lock the main shaft in one of the two or three positions. The turntable and the eccentric shaft of the main shaft are connected by an energy storage mechanism. When the turntable rotates, it first drives the energy storage mechanism to store energy and then drives the main shaft locking mechanism to release the lock engagement with the main shaft, so that the energy storage mechanism releases energy and drives the main shaft to rotate. This realizes the rapid opening or closing of the changeover switch. The opening and closing speed is independent of human operation, which improves the breaking capacity, simplifies the structure, and avoids other mechanisms outside the operating mechanism from driving the main shaft to rotate, thus improving the reliability of dual-power supply conversion.

[0044] In addition, the spindle locking mechanism includes a first lever and a second lever. The spindle is locked in the main power-on position by one lever and in the backup power-on position by the other lever. The two levers together lock the spindle in the double-position, making the locking more reliable and facilitating a compact arrangement of the spindle and turntable.

[0045] Furthermore, the rotation center of the turntable, the rotation center of the main shaft, the eccentric shaft of the main shaft, and the eccentric shaft of the turntable are arranged sequentially and alternately along a straight line. That is, the main shaft and the eccentric shaft of the main shaft are located between the rotation center of the turntable and the eccentric shaft of the turntable. The energy storage mechanism is a spring. The transmission structure is simple, the overall structure is compact, and it occupies little space.

[0046] In particular, the turntable drive section of the turntable is provided with a receiving cavity located between the turntable eccentric shaft and the turntable rotating section, and at least part of the main shaft and energy storage mechanism are placed in the receiving cavity, which can reduce the size of the operating mechanism. Attached Figure Description

[0047] Figure 1 This is a cross-sectional view of the operating mechanism of the changeover switch in the dual-state of this utility model;

[0048] Figure 2 This is another cross-sectional view of the operating mechanism of the changeover switch in the dual-state of this utility model;

[0049] Figure 3 This is a cross-sectional view of the operating mechanism of the switching switch for unlocking in both states according to this utility model;

[0050] Figure 4 This is a cross-sectional view of the operating mechanism of the changeover switch when the main power is on.

[0051] Figure 5 This is a cross-sectional view of the operating mechanism of the changeover switch that unlocks at the moment the main power is turned on in this utility model.

[0052] Figure 6 This is a cross-sectional view of the operating mechanism of the changeover switch in the standby power-on state of this utility model;

[0053] Figure 7 This is a schematic diagram of the structure of the automatic operation mechanism of this utility model when the main power is on;

[0054] Figure 8 This is a schematic diagram of the structure of an embodiment of the automatic operation mechanism of this utility model when the backup power is on;

[0055] Figure 9 This is a schematic diagram of the structure of Embodiment 2 of the automatic operation mechanism in the dual-state state of this utility model;

[0056] Figure 10 This is a schematic diagram of the structure of the automatic operation mechanism in the main power-on state of this utility model, which is a second embodiment.

[0057] Figure 11 This is a schematic diagram of the main shaft and baffle of this utility model;

[0058] Figure 12 This is a schematic diagram of the structure of the back of the turntable of this utility model;

[0059] Figure 13 This is a schematic diagram of the front structure of the turntable of this utility model;

[0060] Figure 14 This is a schematic diagram of the rotating component in Embodiment 1 of this utility model;

[0061] Figure 15 This is a schematic diagram of the rotating component in Embodiment 2 of this utility model;

[0062] Figure 16 This is a schematic diagram of the structure of the electromagnetic removal mechanism of the automatic operation mechanism in Embodiment 2 of this utility model;

[0063] Figure 17 This is an exploded view of the operating mechanism of the changeover switch according to Embodiment 1 of this utility model;

[0064] Figure 18 This is an exploded view of the operating mechanism of the changeover switch according to Embodiment 2 of this utility model.

[0065] Turntable 1; Turntable eccentric shaft 11; First unlocking protrusion 12; Second unlocking protrusion 13; Third unlocking protrusion 14; Fourth unlocking protrusion 15; Turntable operating part 16; Turntable driving part 17; Turntable mounting groove 171; Turntable through hole 172; Reinforcing plate 173; Clearance hole 174; Receiving cavity 18; Turntable mounting hole 19;

[0066] Energy storage mechanism 2;

[0067] Spindle 3; Spindle shaft 30; Spindle eccentric shaft 31; Spindle protrusion 32; Spindle mounting hole 33;

[0068] baffle 4; first locking part 411; first locking notch 412; second locking part 413; third locking part 421; second locking notch 422; fourth locking part 423; baffle arc edge 43;

[0069] Main shaft locking mechanism 5; first lever 51; first lever locking part 511; first mating part 512; second mating part 513; second lever 52; second lever locking part 521; third mating part 522; fourth mating part 523; first elastic element 53;

[0070] Automatic operating mechanism 6; rotating component 61; push rod 611; rotating component boss 612; rotating component eccentric shaft 613; rotating component protrusion 614; rotating component shaft hole 615; first drive rod 62; drive groove 621; first drive surface 622; second drive surface 623; first electromagnetic mechanism 63; second electromagnetic mechanism 64; third electromagnetic mechanism 65; second drive rod 66; transmission shaft 661; connecting rod 67; sliding groove 671;

[0071] Bracket 7;

[0072] Housing 8; First cover 81; Second cover 82;

[0073] Electronic component board 9. Detailed Implementation

[0074] The specific implementation of the operating mechanism of the changeover switch of this utility model is further described below with reference to the accompanying drawings. The operating mechanism of the changeover switch of this utility model is not limited to the description in the following embodiments.

[0075] A changeover switch typically includes an operating mechanism and a contact system (not shown in the figure). The operating mechanism is connected to the contact system via a spindle 3. The contact system is connected to a main power supply and a backup power supply. The rotation of the spindle 3 drives the contact system to switch between the main power supply and the backup power supply.

[0076] For a two-position changeover switch, the operating mechanism drives the main shaft 3 to rotate between two positions: the main power supply closed position and the backup power supply closed position. When the main shaft 3 rotates to the main power supply closed position, it switches the contact system to the main power supply on state; when it rotates to the backup power supply closed position, it switches the contact system to the backup power supply on state. For a three-position changeover switch, the operating mechanism drives the main shaft 3 to rotate between three positions: the main power supply closed position, the double open position, and the backup power supply closed position. When the main shaft 3 rotates to these positions, it switches the contact system to either the main power supply on state, the state where both the main power supply and backup power supply are off (double open state), or the state where the backup power supply is on, respectively.

[0077] Refer to this application Figure 1 , Figure 17 , Figure 18 The operating mechanism of the changeover switch includes a manual operating mechanism and / or an automatic operating mechanism 6, and also includes an energy storage mechanism 2 and a turntable 1 connected to the main shaft 3. The turntable 1 is rotatable, and its rotation drives the energy storage mechanism 2 to store and then release energy. After the energy storage mechanism 2 releases energy, it drives the main shaft 3 to rotate rapidly to switch positions. The automatic operating mechanism is used to electrically drive the turntable 1 to rotate to achieve power switching and disconnection, while the manual operating mechanism is used to manually drive the turntable 1 to rotate to achieve power switching and disconnection.

[0078] like Figure 1 , Figure 17 , Figure 18 As shown, the operating mechanism of the changeover switch in this embodiment includes a housing 8, a turntable 1 disposed within the housing 8, an energy storage mechanism 2, and a main shaft 3. The housing 8 in this embodiment includes a first cover 81 and a second cover 82 that fit together. A bracket 7 is disposed within the housing 8, and the bracket 7 is fixed to the first cover 81 by several fasteners. The contact system is arranged side-by-side with the housing 8 of the operating mechanism, located outside the first cover 81 of the housing 8. The main shaft 3 is rotatably disposed and penetrates the middle of the first cover 81 of the housing 8, extending out of the first cover 81 of the housing 8 and connecting to the contact system. The operating mechanism also includes a manual operating mechanism and an automatic operating mechanism 6 for driving the turntable 1. The turntable 1 is rotatably disposed on the side of the bracket 7 facing the first cover 81, and the automatic operating mechanism 6 is located on the other side of the bracket 7 facing the second cover 82. The automatic operating mechanism 6 at least partially penetrates the bracket 7 and is connected to the turntable 1. The changeover switch typically also includes an electronic component board 9 for remotely controlling the automatic operating mechanism 6. Preferably, in this embodiment, the electronic component board 9 at least partially spans the first cover 81 and the second cover 82 and is located on one side of the support 7. The plane of the electronic component board 9 is perpendicular to the support 7 and parallel to the rotation axes of the turntable 1 and the main shaft 3.

[0079] It should be noted that the contact system typically includes a contact system housing mounted side by side on the outside of the first cover 81 of the housing 8, and a moving contact and a stationary contact disposed within the contact system housing. The portion of the main shaft 3 that penetrates through the first cover 81 extends into the contact system housing and is directly connected to the moving contact, or is indirectly connected to the moving contact through a linkage component extending into the contact system housing. The main shaft 3 can drive the moving contact to contact or separate from the stationary contact to achieve the connection of the main power supply, the disconnection of the dual power supply, and the connection of the backup power supply. An arc extinguishing device is also typically installed inside the contact system housing.

[0080] like Figure 1 , Figure 2 and Figure 11As shown, the turntable 1 can reciprocate between at least two turntable positions to drive the spindle 3 to reciprocate between two spindle positions. The improvement of this application is that the operating mechanism is also provided with a spindle locking mechanism 5.

[0081] The turntable 1 is provided with a turntable eccentric shaft 11 that is eccentrically arranged with respect to the rotation center of the turntable 1, and the main shaft 3 is provided with a main shaft eccentric shaft 31 that is eccentrically arranged with respect to the rotation center of the main shaft 3. The energy storage mechanism 2 is connected between the turntable eccentric shaft 11 and the main shaft eccentric shaft 31. The main shaft locking mechanism 5 is used to lock the main shaft 3 in the main shaft position. The main shaft locking mechanism 5 includes at least one locking member and at least one elastic member. The elastic member drives the locking member to move in the direction of locking the main shaft 3 to lock the main shaft 3.

[0082] When the turntable 1 rotates from one turntable position to another, the rotation of the turntable 1 first drives the energy storage mechanism 2 to store energy, and then drives the locking mechanism to release the lock on the main shaft 3, so that the energy storage mechanism 2 releases energy to drive the main shaft 3 to rotate from one main shaft position to another, and the main shaft locking mechanism 5 locks the main shaft 3 again.

[0083] The operating mechanism of the changeover switch in this embodiment is applicable to two-position and three-position changeover switches. It is equipped with a main shaft locking mechanism 5 to lock the main shaft 3 in one of the two or three positions. The turntable 1 and the eccentric shaft of the main shaft 3 are connected by an energy storage mechanism 2. When the turntable 1 rotates, it first drives the energy storage mechanism 2 to store energy, and then drives the main shaft locking mechanism 5 to release the locking engagement with the main shaft 3, so that the energy storage mechanism 2 releases energy and drives the main shaft 3 to rotate. This realizes the rapid opening or closing of the changeover switch. The opening and closing speed is independent of human operation, which improves the breaking capacity, simplifies the structure, and avoids other mechanisms outside the operating mechanism from driving the main shaft 3 to rotate, thereby improving the reliability of dual-power conversion.

[0084] like Figure 1 , Figure 2 and Figure 11As shown, the operating mechanism of the changeover switch in this embodiment is a three-position changeover switch operating mechanism. The turntable 1 can rotate to at least three turntable positions, including a first turntable position, a middle turntable position, and a second turntable position, which are respectively applied to drive the main shaft 3 to rotate to three main shaft positions, namely the main power on position, the dual-open position, and the backup power on position. The main shaft locking mechanism 5 is used to lock the main shaft 3 in the dual-open position, the main power on position, or the backup power on position. When the main shaft 3 rotates to the dual-open position, the main power on position, or the backup power on position, the elastic element drives the locking element to lock the main shaft 3, so that other mechanisms outside the operating mechanism cannot drive the main shaft 3 to rotate, thereby improving safety. Moreover, the rotation of the turntable 1 can drive the energy storage mechanism 2 to store energy first, until the turntable 1 drives the main shaft locking mechanism 5 to release the lock on the main shaft 3, so that the energy storage mechanism 2 releases energy and drives the main shaft 3 to rotate.

[0085] When the turntable 1 rotates from the middle position to the first position, or from the first position to the middle position, or from the middle position to the second position, or from the second position to the middle position, the rotation of the turntable 1 first drives the energy storage mechanism 2 to store energy, and then drives the locking mechanism to release the lock on the main shaft 3, so that the energy storage mechanism 2 releases energy and drives the main shaft 3 to rotate to the corresponding main power supply closed position or dual open position or backup power supply closed position or dual open position, and the main shaft locking mechanism 5 locks the main shaft 3 again.

[0086] The specific process is as follows:

[0087] Turntable 1 is in the middle position, spindle 3 is in the double split position, and the locking element of spindle locking mechanism 5 locks spindle 3, preventing spindle 3 from rotating to the main power supply closed position and the backup power supply closed position.

[0088] At this time, the main power supply is switched on. During the rotation of the turntable 1 from the middle position to the first position, the energy storage mechanism 2 is driven to store energy. Since the main shaft 3 is locked, the rotation of the turntable 1 acts as a spring for the energy storage mechanism 2, causing it to store energy. When the turntable 1 reaches or approaches the first position, the locking mechanism releases the lock on the main shaft 3. Then, the energy storage mechanism 2 releases energy, driving the main shaft 3 to rotate to the main power supply switched on position. The main shaft locking mechanism 5 then locks the main shaft 3 in the main power supply switched on position, preventing it from rotating to the split position. Preferably, when the turntable 1 reaches the first position, the locking mechanism releases the lock on the main shaft 3, causing the energy storage mechanism 2 to release energy and drive the main shaft 3 to rotate to the main power supply switched on position. The main shaft locking mechanism 5 then locks the main shaft 3 back into the main power supply switched on position.

[0089] At this time, the turntable 1 is rotated towards the center position. During the rotation of the turntable 1 from the first position to the center position, the energy storage mechanism 2 is driven to store energy. When the turntable 1 reaches or approaches the center position, the locking member is driven to release the lock on the main shaft 3. Then, the energy storage mechanism 2 releases energy and drives the main shaft 3 to rotate to the split position. The main shaft locking mechanism 5 then locks the main shaft 3 in the split position. Preferably, when the turntable 1 reaches the center position, the locking member is driven to release the lock on the main shaft 3, causing the energy storage mechanism 2 to release energy and drive the main shaft 3 to rotate to the split position. The main shaft locking mechanism 5 then locks the main shaft 3 in the split position again.

[0090] At this time, turntable 1 is rotated to the second position. During the rotation of turntable 1 from the middle position to the second position, the energy storage mechanism 2 is driven to store energy. When turntable 1 reaches or approaches the second position, the locking member is driven to release the lock on the spindle 3. Then, the energy storage mechanism 2 releases energy and drives the spindle 3 to rotate to the backup power on position. The spindle locking mechanism 5 locks the spindle 3 in the backup power on position, preventing it from rotating to the split position. Preferably, when turntable 1 reaches the second position, the locking member is driven to release the lock on the spindle 3, causing the energy storage mechanism 2 to release energy and drive the spindle 3 to rotate to the backup power on position. The spindle locking mechanism 5 then locks the spindle 3 back in the backup power on position.

[0091] At this time, turntable 1 is rotated towards the center position. During the rotation of turntable 1 from the second position to the center position, the energy storage mechanism 2 is driven to store energy. When turntable 1 reaches or approaches the center position, the locking element is driven to release the lock on the main shaft 3. Then, the energy storage mechanism 2 releases energy and drives the main shaft 3 to rotate to the split position. The main shaft locking mechanism 5 then locks the main shaft 3 in the split position. Preferably, when turntable 1 reaches the center position, the locking element is driven to release the lock on the main shaft 3, causing the energy storage mechanism 2 to release energy and drive the main shaft 3 to rotate to the split position. The main shaft locking mechanism 5 then locks the main shaft 3 in the split position again.

[0092] In this embodiment, the operating mechanism of the changeover switch includes a spindle locking mechanism 5, which locks the spindle 3 in the dual-position, main power supply closed, or backup power supply closed position to prevent other mechanisms outside the operating mechanism from driving the spindle 3 to rotate, thereby improving the reliability of dual power supply switching.

[0093] like Figure 1 , Figure 2 and Figure 11As shown, in one embodiment of the spindle locking mechanism 5, the spindle locking mechanism 5 has two locking components: a first lever 51 and a second lever 52, which are rotatably mounted. There can also be two elastic components, such as a first elastic component 53 and a second elastic component, which drive the first lever 51 and the second lever 52 to move in the direction of locking the spindle 3. Preferably, in this embodiment, there is only one elastic component connected between the first lever 51 and the second lever 52; that is, the first elastic component 53 and the second elastic component are the same elastic component, which simplifies the structure. In other embodiments, the first elastic component 53 and the second elastic component are different elastic components, and there can be more elastic components, not limited to one or two.

[0094] In this embodiment, the first lever 51 is provided with a first lever locking part 511, the second lever 52 is provided with a second lever locking part 521, and the main shaft 3 is provided with a first locking part 411, a second locking part 413, a third locking part 421, and a fourth locking part 423. When the turntable 1 is in the middle position and the main shaft 3 is in the double-split position, the first locking part 411 locks with the first lever locking part 511 of the first lever 51, and the third locking part 421 locks with the second locking part 413 of the second lever 52; when the turntable 1 is in the first position and the main shaft 3 is in the main power-on position, the fourth locking part 423 locks with the second locking part 413 of the second lever 52; when the turntable 1 is in the second position and the main shaft 3 is in the backup power-on position, the second locking part 413 locks with the first lever locking part 511 of the first lever 51. The spindle locking mechanism 5 locks the spindle 3 in the main power-on position using one lever and in the backup power-on position using another lever. Both levers work together to lock the spindle 3 in the split position, making the locking more reliable and facilitating a compact arrangement of the spindle 3 and the turntable 1. Alternatively, two locking parts can be provided on the first lever 51 and the second lever 52 respectively, and two locking parts can be provided on the spindle 3.

[0095] like Figure 2 , Figure 3 , Figure 4 As shown, Figure 2 The turntable 1 is located in the center of the turntable, and the main shaft 3 is in the double-split position. The first lever 51 locks the main shaft 3, preventing it from rotating counterclockwise towards the main power switch-on position. The second lever 52 locks the main shaft 3, preventing it from rotating clockwise towards the backup power switch-on position. (Reference) Figure 3During the process of the turntable 1 rotating counterclockwise from the middle position to the first position, the turntable 1 drives the energy storage mechanism 2 to store energy. The turntable 1 also drives the first lever 51 to overcome the action of the first elastic element 53, causing the first lever locking part 511 to move away from the main shaft 3. When the turntable 1 reaches the first position, the first lever 51 is driven to release the locking engagement between the first lever locking part 511 and the first locking part 411 of the main shaft 3. Thus, under the energy release action of the energy storage mechanism 2, the main shaft 3 rotates counterclockwise from the split position to the main power on position. The fourth locking part 423 of the main shaft 3 corresponds to the second lever locking part 521, causing the second lever 52 to move closer to the main shaft 3 under the action of the second elastic element, locking with the fourth locking part 423 of the main shaft 3, preventing the main shaft 3 from rotating to the split position (see reference). Figure 4 );

[0096] like Figure 2 , Figure 5 As shown, during the process of the turntable 1 rotating clockwise from the first position to the middle position, the turntable 1 drives the energy storage mechanism 2 to store energy, and the turntable 1 drives the second lever 52 to overcome the action of the second elastic element, causing the second lever locking part 521 to move away from the main shaft 3. When the turntable 1 reaches the middle position, the turntable 1 drives the second lever 52 to release the locking part 521 from the fourth locking part 423 of the main shaft 3. Thus, under the action of the energy storage mechanism 2 releasing energy, the main shaft 3 rotates clockwise from the main power supply closed position to the double open position. The locking part 411 corresponds to the first lever locking part 511, and the third locking part 421 corresponds to the second lever locking part 521. Under the action of the first elastic member 53, the first lever 51 drives the first lever locking part 511 to move closer to the main shaft 3 and locks with the first locking part 411 of the main shaft 3, so that the main shaft 3 cannot rotate toward the main power supply closed position. Under the action of the second elastic member, the second lever 52 drives the second lever locking part 521 to move closer to the main shaft 3 and locks with the third locking part 421 of the main shaft 3, so that the main shaft 3 cannot rotate toward the backup power supply closed position.

[0097] like Figure 2 , Figure 6As shown, during the process of the turntable 1 rotating clockwise from the middle position to the second position, the turntable 1 drives the energy storage mechanism 2 to store energy, and the turntable 1 drives the second lever 52 to move the second lever locking part 521 away from the main shaft 3 under the action of overcoming the action of the second elastic element. When the turntable rotates to the second position, it drives the second lever 52 to release the locking engagement between the second lever locking part 521 and the third locking part 421 of the main shaft 3. As a result, the main shaft 3 rotates clockwise from the double split position to the backup power supply closed position under the action of the energy storage mechanism 2 releasing energy. The second locking part 413 of the main shaft 3 corresponds to the first lever locking part 511. Under the action of the first elastic element 53, the first lever 51 drives the first lever locking part 511 to move towards the main shaft 3 and lock with the second locking part 413 of the main shaft 3, so that the main shaft 3 cannot rotate to the double split position.

[0098] like Figure 2 , Figure 6 As shown, during the process of the turntable 1 rotating counterclockwise from the second position to the middle position, the turntable 1 drives the energy storage mechanism 2 to store energy, and the turntable 1 drives the first lever 51 to overcome the action of the first elastic element 53, causing the first lever locking part 511 to move away from the main shaft 3. When the turntable 1 reaches the middle position, the turntable 1 drives the first lever 51 to release the locking engagement between the first lever locking part 511 and the second locking part 413 of the main shaft 3. Thus, under the action of the energy storage mechanism 2 releasing energy, the main shaft 3 rotates counterclockwise from the backup power on position to the double-open position. A locking part 411 corresponds to the first lever locking part 511, and a third locking part 421 corresponds to the second lever locking part 521. Under the action of the second elastic element, the second lever 52 drives the second lever locking part 521 to move closer to the main shaft 3 and locks with the third locking part 421 of the main shaft 3, so that the main shaft 3 cannot rotate to the backup power supply closed position. Under the action of the first elastic element 53, the first lever 51 drives the first lever locking part 511 to move closer to the main shaft 3 and locks with the first locking part 411 of the main shaft 3, so that the main shaft 3 cannot rotate to the main power supply closed position.

[0099] like Figure 1 , Figure 11 As shown, the main shaft 3 in this embodiment is used for a locking structure that engages with the first lever 51 and the second lever 52. A baffle 4 is fixedly provided on the main shaft 3, and the first locking part 411, the second locking part 413, the third locking part 421 and the fourth locking part 423 are provided on the baffle 4.

[0100] In this embodiment, the baffle 4 is integrally formed with the main shaft 3, that is, the first locking part 411, the second locking part 413, the third locking part 421, and the fourth locking part 423 are disposed on the main shaft 3. Of course, in other embodiments, the baffle 4 can also be fitted onto the main shaft 3 through the baffle mounting hole and rotate synchronously with the main shaft 3.

[0101] Specifically, the baffle 4 is a fan-shaped ring structure arranged around the main shaft 3, having a baffle arc edge 43, a first baffle straight edge, and a second baffle straight edge. A first locking notch 412 is provided at the connection position between the baffle arc edge 43 and the first baffle straight edge. The first locking notch 412 has a first locking straight edge and a first positioning arc edge. The first positioning arc edge connects between the first locking straight edge and the first baffle straight edge. The first locking part 411 is the first locking straight edge, and the second locking part 413 is the first baffle straight edge. A second locking notch 422 is provided at the connection position between the baffle arc edge 43 and the second baffle straight edge. The second locking notch 422 has a second locking straight edge and a second positioning arc edge. The second positioning arc edge connects between the second locking straight edge and the second baffle straight edge. The third locking part 421 is the second locking straight edge, and the fourth locking part 423 is the second baffle straight edge. When the main shaft 3 is in the dual-position, the first lever locking part 511 locks with the first locking part 411, and the second lever locking part 521 locks with the third locking part 421. When the main shaft 3 is in the main power-on position, the first lever locking part 511 abuts against the arc edge 43 of the baffle, and the second lever locking part 521 locks with the fourth locking part 423. When the main shaft 3 is in the backup power-on position, the first lever locking part 511 locks with the second locking part 413, and the second lever locking part 521 abuts against the arc edge 43 of the baffle. The baffle 4 is designed as a fan-shaped structure with notches on both sides, which is simple in structure, easy to manufacture, convenient to unlock, and stable and reliable in locking.

[0102] like Figure 1 , Figure 2 , Figure 6 , Figure 12 As shown, the unlocking structure between the turntable 1 and the first lever 51 and the second lever 52 in this embodiment includes a first unlocking protrusion 12, a second unlocking protrusion 13, a third unlocking protrusion 14, and a fourth unlocking protrusion 15 on the turntable 1. The first lever 51 has a first unlocking engagement structure, which includes a first engagement portion 512 and a second engagement portion 513. The second lever 52 has a second unlocking engagement structure, which includes a third engagement portion 522 and a fourth engagement portion 523. Figure 2 , Figure 3 , Figure 4 As shown, when the turntable 1 rotates counterclockwise from the middle position to the first position, the first unlocking protrusion 12 pushes against the first mating part 512, driving the first lever 51 to release the locking part 511 from the locking engagement with the first locking part 411 of the main shaft 3; Figure 2 , Figure 5As shown, when the turntable 1 rotates clockwise from the first position to the middle position, the fourth unlocking protrusion 15 pushes against the fourth mating part 523, driving the second lever 52 to release the second lever locking part 521 from the locking engagement with the fourth locking part 423 of the main shaft 3; Figure 2 , Figure 6 As shown, when the turntable 1 rotates clockwise from the middle position to the second position, the third unlocking protrusion 14 pushes against the third mating part 522, driving the second lever 52 to release the second lever locking part 521 from the locking engagement with the third locking part 421 of the main shaft 3; as Figure 2 , Figure 6 As shown, when the turntable 1 rotates clockwise from the second position to the middle position, the second unlocking protrusion 13 pushes against the second mating part 513, driving the first lever 51 to release the locking part 511 from the second locking part 413 of the main shaft 3. The unlocking structure between the turntable 1 and the first lever 51 and the second lever 52 is simple, and the unlocking action is stable and reliable. It should be noted that in this embodiment, the turntable 1 is integrally formed with multiple protruding shafts, protruding blocks, or protruding inclined surfaces as unlocking structures. In other embodiments, multiple unlocking structures can also be connected as one piece, or the first unlocking protrusion 12 and the second unlocking protrusion 13 can be the same unlocking structure, and the third unlocking protrusion 14 and the fourth unlocking protrusion 15 can be the same unlocking structure; similarly, the first mating part 512 and the second mating part 513 can also be the same mating part, and the third mating part 522 and the fourth mating part 523 can also be the same mating part. In addition, in other embodiments, the turntable 1 can indirectly drive the first lever 51 or the second lever 52 to lock the main shaft 3 through a transmission rod.

[0103] Preferred, such as Figure 2 , Figure 17As shown, the first lever 51 and the second lever 52 are rotatably disposed on the inner side of the first cover 81. The first lever 51 and the second lever 52 are arranged side by side with intervals. The first end of the first lever 51 is rotatably disposed, and the first unlocking engagement structure is disposed on the second end of the first lever 51. The first end of the second lever 52 is rotatably disposed, and the second unlocking engagement structure is disposed on the second end of the second lever 52. The first elastic element 53 is connected between the second end of the first lever 51 and the second end of the second lever 52. The side of the first lever 51 with the first lever locking part 511 and the side of the second lever 52 with the second lever locking part 521 are arranged relatively with intervals and are respectively located on both sides of the main shaft 3. The baffle 4 is fixedly installed on the main shaft 3 and rotates with the main shaft 3. The baffle 4 is located between the first lever 51 and the second lever 52. The first lever locking part 511 and the second lever locking part 521 are respectively used to lock the main shaft 3. The turntable 1 drives the first lever 51 and the second lever 52 to release the lock on the main shaft 3 through the first unlocking engagement structure and the second unlocking engagement structure, respectively. The first lever locking part 511 is preferably a triangular protrusion on the side of the first lever 51; the second lever locking part 521 is preferably a triangular protrusion on the side of the second lever 52.

[0104] Preferred, such as Figure 12 As shown, the first unlocking protrusion 12 and the third unlocking protrusion 14 are symmetrically arranged and are both circular shaft structures; the second unlocking protrusion 13 and the fourth unlocking protrusion 15 are symmetrically arranged and are both boss structures with smooth ends. The smooth ends of the second unlocking protrusion 13 and the fourth unlocking protrusion 15 are arranged opposite to each other. The distance from the first unlocking protrusion 12 and the third unlocking protrusion 14 to the rotation center of the turntable 1 is less than the distance from the second unlocking protrusion 13 and the fourth unlocking protrusion 15 to the rotation center of the turntable 1.

[0105] Preferred, such as Figure 6 As shown, the second mating part 513 is a rib structure formed by the protrusion on the side of the first lever 51 away from the main shaft 3; the first mating part 512 is a rib structure formed by the protrusion on the side of the first lever 51 near the main shaft 3; the fourth mating part 523 is a rib structure formed by the protrusion on the side of the second lever 52 away from the main shaft 3; and the third mating part 522 is a rib structure formed by the protrusion on the side of the second lever 52 near the main shaft 3. The unlocking protrusion of the turntable 1 is smoothly designed and can slide along the ribs on the first lever 51 and the second lever 52 to avoid jamming.

[0106] A second embodiment of the spindle locking mechanism 5 (not shown in the figure) features a linearly movable locking element, with a corresponding elastic element for resetting the locking element. The locking element has a locking portion, and the spindle 3 has a first, second, and third spindle locking portion, respectively used to lock into the locking portion when the spindle 3 is in the main power on position, the dual-open position, and the backup power on position. The turntable 1 has a first, second, and third unlocking portion, respectively used to drive the locking element to release its locking engagement with the spindle 3 when the turntable 1 is in the first, middle, and second positions. Preferably, the locking portion is a protrusion on the side of the locking element facing the spindle 3, and correspondingly, the first, second, and third spindle locking portions are groove structures on the spindle 3, for example, referencing... Figure 2 Three groove structures are spaced apart on the circumferential sidewall of the baffle 4, serving as the first, second, and third main spindle locking parts; the locking member is slidably disposed above the main spindle 3. When the main spindle 3 rotates to the main power-on position, the first main spindle locking part corresponds to the locking part; when it rotates to the double-open position, the second main spindle locking part corresponds to the locking part; when it rotates to the backup power-on position, the third main spindle locking part corresponds to the locking part. The elastic element drives the locking part of the locking member to insert into the corresponding first, second, or third main spindle locking part, locking the main spindle 3. When turntable 1 rotates to near the first position, the middle position, or the second position, the driving locking element overcomes the action of the elastic element and slides away from the main shaft 3, releasing the lock on the main shaft 3. This causes the energy storage mechanism 2 to release energy and drive the main shaft 3 to rotate. Afterward, turntable 1 rotates to the first position, the middle position, or the second position to avoid the locking element. The energy storage mechanism 2 drives the main shaft 3 to rotate to the corresponding main power supply closed position, dual open position, and backup power supply closed position. The elastic element drives the locking element to lock the main shaft 3 again.

[0107] As a third embodiment of the spindle locking mechanism 5 (not shown in the figure), the difference from the second embodiment is that the locking member is a rotatable locking member, with one end rotatably mounted and the other end having a locking part. The remaining structures of the spindle 3 and turntable 1 are the same as in the second embodiment. When the spindle 3 is in the main power-on position, the dual-off position, and the backup power-on position, the elastic element drives the locking member to rotate, causing the locking part to lock into the first, second, and third spindle locking parts of the corresponding spindle 3, respectively. The remaining process is the same as in the second embodiment and will not be described again. Figure 1 , Figure 12 , Figure 13As shown, the turntable 1 includes a central rotating part. A turntable operating part 16 and a turntable driving part 17 protrude radially from opposite sides of the rotating part. The turntable driving part 17 has a turntable eccentric shaft 11 and a receiving cavity 18 located between the turntable eccentric shaft 11 and the rotating part. One end of the main shaft 3, the main shaft eccentric shaft 31, and the energy storage mechanism 2 are housed within the receiving cavity 18. The turntable 1 has the receiving cavity 18, which can accommodate the energy storage mechanism 2 and part of the main shaft 3, facilitating a compact arrangement of the main shaft 3, the energy storage mechanism 2, and the turntable 1, thus reducing the size of the changeover switch.

[0108] Specifically, the turntable rotating part is provided with a turntable mounting hole 19 or a turntable mounting shaft for rotating and mounting the turntable 1. A circular arc-shaped structure protrudes from one radial side of the turntable rotating part, and a turntable operating part 16 protrudes from this circular arc-shaped structure for manually driving the turntable 1. A turntable driving part 17 protrudes from the other radial side of the turntable rotating part. The turntable driving part 17 has a receiving cavity 18. One end of the main shaft 3 with a main shaft eccentric shaft 31 and an energy storage mechanism 2 are placed inside the receiving cavity 18. A turntable mounting groove 171 is provided on the outer side wall of the receiving cavity 18 away from the turntable rotating part, and this side wall also has a turntable through hole 172 connecting the receiving cavity 18 and the turntable mounting groove 171. A reinforcing plate 173 is provided in the receiving cavity 18 along the rotation axis of the turntable 1, and the reinforcing plate 173 has a circular arc-shaped clearance hole 174.

[0109] The first unlocking protrusion 12 and the third unlocking protrusion 14 are symmetrically arranged on both sides of the turntable rotating part, and the second unlocking protrusion 13 and the fourth unlocking protrusion 15 are symmetrically arranged on both side walls of the turntable driving part 17, located near the turntable rotating part; the first unlocking protrusion 12, the second unlocking protrusion 13, the third unlocking protrusion 14 and the fourth unlocking protrusion 15 protrude from the turntable 1 along the axial direction of the turntable 1.

[0110] In this embodiment, the turntable eccentric shaft 11 is disposed within the turntable mounting groove 171 and rotates synchronously with the turntable 1. Of course, in other embodiments, the turntable eccentric shaft 11 can also be integrally formed with the turntable 1.

[0111] In this embodiment, as Figure 11 As shown, the radial protrusion of the main shaft 3 has two main shaft protrusions 32 spaced apart along the axial direction of the main shaft 3. Each main shaft protrusion 32 has a main shaft mounting hole 33. The main shaft eccentric shaft 31 is disposed within the main shaft mounting hole 33 and rotates synchronously with the main shaft 3. One end of the main shaft 3 with the main shaft eccentric shaft 31 is placed within the receiving cavity 18, and this end of the main shaft 3 is connected to the main shaft rotating shaft 30 through a shaft hole. The main shaft rotating shaft 30 is rotatably disposed and passes through the clearance hole 174 on the turntable 1 and then through the middle of the second cover 82. Of course, as another embodiment, the main shaft eccentric shaft 31 can also be integrally formed with the main shaft 3.

[0112] In this embodiment, the energy storage mechanism 2 is a spring placed inside the receiving cavity 18. One end of the spring hook extends between the two main shaft protrusions 32 and hangs on the main shaft eccentric shaft 31, while the other end of the spring hook passes through the turntable through hole 172 and hangs on the turntable eccentric shaft 11. The operating mechanism of this embodiment allows for the use of only one energy storage mechanism, eliminating the need for two separate mechanisms for switching the main power supply and the backup power supply. Therefore, the energy storage structure can be configured with only one spring, with both ends connected to the turntable eccentric shaft 11 of the turntable 1 and the main shaft eccentric shaft 31 of the main shaft 3. Of course, in other embodiments, multiple springs can also be connected between the turntable eccentric shaft 11 of the turntable 1 and the main shaft eccentric shaft 31 of the main shaft 3.

[0113] Preferred, such as Figure 1 As shown, the main shaft 3 and the main shaft eccentric shaft 31 are located between the rotation center of the turntable 1 and the turntable eccentric shaft 11. When the turntable 1 is located in the middle position and the main shaft 3 is in the double-split position, the rotation center of the turntable 1, the rotation center of the main shaft 3, the main shaft eccentric shaft 31, and the turntable eccentric shaft 11 are arranged sequentially and alternately along a straight line.

[0114] In another embodiment, the operating mechanism of this application can also be used as a two-position switching switch. The turntable 1 can rotate to two positions, namely a first position and a second position, which correspond to driving the main shaft 3 to rotate to two main shaft positions, namely the main power-on position and the backup power-on position. Similarly, the turntable 1 is provided with a turntable eccentric shaft 11 eccentrically disposed with respect to the rotation center of the turntable 1, and the main shaft 3 is provided with a main shaft eccentric shaft 31 eccentrically disposed with respect to the rotation center of the main shaft 3. The energy storage mechanism 2 is connected between the turntable eccentric shaft 11 and the main shaft eccentric shaft 31. The main shaft locking mechanism 5 is used to lock the main shaft 3 in the main power-on position or the backup power-on position. The main shaft locking mechanism 5 includes at least one locking member and at least one elastic member. The elastic member drives the locking member to move in the direction of locking the main shaft 3 to lock the main shaft 3. When the main shaft 3 rotates to the main power-on position or the backup power-on position, the elastic member drives the locking member to lock the main shaft 3. The rotation of the turntable 1 drives the energy storage mechanism 2 to store energy until the turntable 1 drives the main shaft locking mechanism 5 to release the lock on the main shaft 3, causing the energy storage mechanism 2 to release energy and drive the main shaft 3 to rotate. When the turntable 1 rotates from the first position to the second position, or from the second position to the first position, because the locking member locks and restrains the main shaft 3, the rotation of the turntable 1 first drives the energy storage mechanism 2 to store energy, and then drives the locking member to release the lock on the main shaft 3. After that, the energy storage mechanism 2 releases energy and drives the main shaft 3 to rotate to the corresponding main power supply closed position or backup power supply closed position, and the main shaft locking mechanism 5 locks the main shaft 3 again.

[0115] Similar to the three-position selector switch, the main shaft locking mechanism 5 in this embodiment can also have two locking components. The two locking components are a first lever 51 and a second lever 52, which are rotatably mounted. When the turntable 1 rotates from the first position to the second position, the second lever 52 is driven to release the lock on the main shaft 3, causing the energy storage mechanism 2 to release energy and drive the main shaft 3 to rotate to the backup power on position. The first elastic element 53 drives the first lever 51 to lock the main shaft 3, preventing the main shaft 3 from rotating to the main power on position. When the turntable 1 rotates from the second position to the first position, the first lever 51 is driven to release the lock on the main shaft 3, causing the energy storage mechanism 2 to release energy and drive the main shaft 3 to rotate to the main power on position. The second elastic element drives the second lever 52 to lock the main shaft 3, preventing the main shaft 3 from rotating to the backup power on position.

[0116] Similar to a three-position selector switch, in this embodiment, the first lever 51 is provided with a first lever locking part 511, the second lever 52 is provided with a second lever locking part 521, and the main shaft 3 is provided with a second locking part 413 and a fourth locking part 423. When the turntable 1 is in the first position and the main shaft 3 is in the main power-on position, the fourth locking part 423 locks into the second locking part 413 of the second lever 52; when the turntable 1 is in the second position and the main shaft 3 is in the backup power-on position, the second locking part 413 locks into the first lever 51's first lever locking part 511. That is, unlike a three-position selector switch, the main shaft 3 does not have a first locking part 411 and a third locking part 421.

[0117] Similar to the three-position selector switch, the turntable 1 in this embodiment is provided with a second unlocking protrusion 13 and a fourth unlocking protrusion 15. The first lever 51 is provided with a first unlocking engagement structure, which includes a second engagement portion 513. The second lever 52 is provided with a second unlocking engagement structure, which includes a fourth engagement portion 523. (Reference) Figure 4 , Figure 5 , Figure 6 When the turntable 1 rotates clockwise from the first position to the second position, the fourth unlocking protrusion 15 pushes against the fourth mating part 523, driving the second lever 52 to release the second lever locking part 521 from the locking engagement with the fourth locking part 423 of the main shaft 3; when the turntable 1 rotates clockwise from the second position to the first position, the second unlocking protrusion 13 pushes against the second mating part 513, driving the first lever 51 to release the first lever locking part 511 from the locking engagement with the second locking part 413 of the main shaft 3.

[0118] Unlike the three-position switch, the turntable 1 in this embodiment does not have a first unlocking protrusion 12 or a third unlocking protrusion 14, the first lever 51 does not have a second mating part 513, and the second lever 52 does not have a third mating part 522.

[0119] like Figure 7 , Figure 14 , Figure 17 As shown, the operating mechanism of the changeover switch in this embodiment further includes an automatic operating mechanism 6. The automatic operating mechanism 6 includes a first electromagnetic mechanism 63, a second electromagnetic mechanism 64, a first drive rod 62, and a rotating member 61. The first drive rod 62 is located between the first electromagnetic mechanism 63 and the second electromagnetic mechanism 64. The first drive rod 62 is provided with a drive groove 621. The rotating member 61 is coaxial with the turntable 1 and rotates synchronously. The rotating member 61 includes a push rod 611, which is slidably inserted into the drive groove 621. The first electromagnetic mechanism 63 and the second electromagnetic mechanism 64 are respectively used to drive the first drive rod 62 to move in opposite directions, so that the first drive rod 62 drives the rotating member 61 through the push rod 611 to drive the turntable 1 to rotate towards the first position and the second position of the turntable.

[0120] The automatic operating mechanism 6 is mounted on the bracket 7. The first electromagnetic mechanism 63 and the second electromagnetic mechanism 64 are fixed on the bracket 7 by electromagnetic brackets. The turntable 1 and the automatic operating mechanism 6 are located on both sides of the bracket 7. The turntable 1 is located between the spindle locking mechanism 5 and the bracket 7. The turntable 1 is rotatably mounted on the bracket 7, or it can be mounted on the housing 8. The spindle locking mechanism 5 can also be mounted on the bracket 7 or the housing 8.

[0121] In this embodiment, the rotating component 61 is a cylindrical structure. One end of the rotating component 61 has an axially protruding rotating component boss 612. The rotating component boss 612 passes through the second cover 82 and is fixedly inserted into the turntable mounting hole 19 in the middle of the turntable 1 to achieve connection with the turntable 1. The middle part of the rotating component 61 has a radially protruding push rod 611.

[0122] Preferably, the length direction of the first drive rod 62 is arranged along the moving direction of the first drive rod 62, and the length direction of the drive groove 621 of the first drive rod 62 is also arranged along the moving direction of the first drive rod 62. The drive groove 621 has a first drive surface 622 near the second electromagnetic mechanism 64 and a second drive surface 623 near the first electromagnetic mechanism 63 on both sides along its length direction. The first electromagnetic mechanism 63 drives the first drive rod 62 to move towards the first electromagnetic mechanism 63 by pushing the push rod 611 through the first drive surface 622. The second electromagnetic mechanism 64 drives the first drive rod 62 to move towards the second electromagnetic mechanism 64 by pushing the push rod 611 through the second drive surface 623. The first drive rod 62 moves in opposite directions by pushing the push rod 611 through the drive groove 621 relative to the two drive surfaces (i.e., the first drive surface 622 and the second drive surface 623). This design is simple in structure and provides stable and reliable driving.

[0123] It should be noted that the electronic component board 9, the first electromagnetic mechanism 63, and the second electromagnetic mechanism 64 are existing technologies. The first electromagnetic mechanism 63 and the second electromagnetic mechanism 64 typically include a coil frame, a coil fitted around the coil frame, and an electromagnet disposed within the coil frame. One end of the drive rod extends into the coil frame and is positioned opposite the electromagnet. The electronic component board 9 is electrically connected to the coils of the first electromagnetic mechanism 63 and the second electromagnetic mechanism 64, respectively, and controls the rotation direction of the turntable 1 by controlling the on / off state of the coils. When the coil is energized, the electromagnet is magnetized, and under the action of electromagnetic force, one end of the drive rod moves in the direction extending into the coil frame.

[0124] like Figure 7 , Figure 8 As shown, in this embodiment, the automatic operation mechanism 6 operates as follows: when the switch is in the standby power-on state, when the coil of the first electromagnetic mechanism 63 is energized, it generates an electromagnetic force that drives the first drive rod 62 to move to the right, causing the first drive rod 62 to pass through the first drive surface 622 ( Figure 16 The push rod 611 moves closer to the first electromagnetic mechanism 63 (i.e. to the right), so that the first drive rod 62 drives the rotating part 61 through the push rod 611 to drive the turntable 1 to rotate counterclockwise to the first position of the turntable, thereby realizing the switch to the main power on state.

[0125] When the changeover switch is in the main power-on state, when the coil of the second electromagnetic mechanism 64 is energized, it generates an electromagnetic force that drives the first drive rod 62 to move to the left, causing the first drive rod 62 to pass through the second drive surface 623. Figure 16 The push rod 611 moves closer to the second electromagnetic mechanism 64 (i.e. to the left), causing the first drive rod 62 to drive the rotating part 61 to rotate the turntable 1 clockwise to the second position of the turntable through the push rod 611, thereby switching the changeover switch to the standby power supply on state.

[0126] like Figure 9 , Figure 10 As shown in the second embodiment of the automatic operating mechanism 6, this embodiment further includes a third electromagnetic mechanism 65, a second drive rod 66, and a connecting rod 67. The connecting rod 67 is rotatably connected to both the second drive rod 66 and the rotating member 61. The second drive rod 66 is located between the third electromagnetic mechanism 65 and the rotating member 61. The third electromagnetic mechanism 65 drives the second drive rod 66, causing the second drive rod 66 to drive the rotating member 61 via the connecting rod 67, thus driving the turntable 1 to rotate towards the center position. The automatic operating mechanism 6 can also control the spindle 3 to rotate to the double-split position by operating the turntable 1 through a separate electromagnetic mechanism, making the control more precise and reliable.

[0127] Preferred, such as Figure 15 , Figure 16 As shown, the connecting rod 67 is provided with a sliding groove 671. The sliding groove 671 has a first rotating arc surface and a second rotating arc surface on both sides along its length. The second drive rod 66 is provided with a transmission shaft 661. The transmission shaft 661 is inserted into the sliding groove 671, rotates and engages with the first rotating arc surface, and can move along the length of the sliding groove 671. The rotating member 61 is eccentrically provided with a rotating member eccentric shaft 613. The rotating member eccentric shaft 613 is inserted into the sliding groove 671, rotates and engages with the second rotating arc surface, and can move along the length of the sliding groove 671.

[0128] In this embodiment, the rotating member 61 has two radially protruding rotating member protrusions 614 spaced apart at one end away from the rotating member boss 612. The rotating member protrusions 614 are provided with rotating member shaft holes 615. One end of the connecting rod 67 is limited between the two rotating member protrusions 614. The rotating member eccentric shaft 613 passes sequentially through the rotating member shaft hole 615 on one rotating member protrusion 614, the sliding groove 671 of the connecting rod 67, and is inserted into the rotating member shaft hole 615 on the other rotating member protrusion 614.

[0129] It should be noted that the third electromagnetic mechanism 65 is existing technology, and its structure can be the same as that of the first electromagnetic mechanism 63 and the second electromagnetic mechanism 64 described above. Of course, the first electromagnetic mechanism 63, the second electromagnetic mechanism 64, and the third electromagnetic mechanism 65 can also adopt other structures in the prior art.

[0130] like Figure 9 , Figure 10 As shown, in this embodiment, the automatic operating mechanism 6 operates as follows: when the switch is in the dual-open state, when the coil of the first electromagnetic mechanism 63 is energized, it generates an electromagnetic force that drives the first driving rod 62 to move to the right, causing the first driving rod 62 to pass through the first driving surface 622 ( Figure 16The push rod 611 moves closer to the first electromagnetic mechanism 63 (i.e. to the right), so that the first drive rod 62 drives the rotating part 61 through the push rod 611 to drive the turntable 1 to rotate counterclockwise to the first position of the turntable, thereby realizing the switch to the main power on state.

[0131] When the changeover switch is in the main power-on state, when the coil of the third electromagnetic mechanism 65 is energized, it generates electromagnetic force to drive the second drive rod 66 to move closer to the third electromagnetic mechanism 65 (i.e. downward), so that the second drive rod 66 drives the rotating part 61 through the connecting rod 67 to drive the turntable 1 to rotate clockwise to the middle position of the turntable, thereby realizing the changeover switch to the dual-state.

[0132] When the changeover switch is in the dual-open state, when the coil of the second electromagnetic mechanism 64 is energized, it generates an electromagnetic force that drives the first drive rod 62 to move to the left, causing the first drive rod 62 to pass through the second drive surface 623. Figure 16 The push rod 611 moves closer to the second electromagnetic mechanism 64 (i.e. to the left), so that the first drive rod 62 drives the rotating part 61 through the push rod 611 to drive the turntable 1 to rotate clockwise to the second position of the turntable, thereby realizing the switch to the standby power supply on state.

[0133] When the changeover switch is in the standby power-on state, when the coil of the third electromagnetic mechanism 65 is energized, it generates an electromagnetic force that drives the second drive rod 66 to move closer to the third electromagnetic mechanism 65 (i.e. downwards). This causes the second drive rod 66 to drive the rotating part 61 through the connecting rod 67 to drive the turntable 1 to rotate counterclockwise towards the center of the turntable, thereby switching the changeover switch to the dual-state.

[0134] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0135] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An operating mechanism for a changeover switch, comprising a rotating turntable (1), an energy storage mechanism (2), and a rotating main shaft (3), wherein the turntable (1) is capable of reciprocating between at least two turntable positions to drive the main shaft (3) to reciprocate between two main shaft positions; characterized in that: The turntable (1) is provided with a turntable eccentric shaft (11) that is eccentrically set with respect to the rotation center of the turntable (1), and the main shaft (3) is provided with a main shaft eccentric shaft (31) that is eccentrically set with respect to the rotation center of the main shaft (3). The energy storage mechanism (2) is connected between the turntable eccentric shaft (11) and the main shaft eccentric shaft (31). The operating mechanism also includes a spindle locking mechanism (5), which includes at least one locking element and at least one elastic element; when the spindle (3) rotates to the spindle position, the elastic element drives the locking element to lock the spindle (3); When the turntable (1) rotates from one turntable position to another turntable position, the rotation of the turntable (1) first drives the energy storage mechanism (2) to store energy, and then drives the locking mechanism to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy and drives the main shaft (3) to rotate from one main shaft position to another main shaft position, and the main shaft locking mechanism (5) locks the main shaft (3) again.

2. The operating mechanism of the changeover switch according to claim 1, characterized in that: The turntable (1) can rotate to at least three turntable positions, including a first turntable position, a middle turntable position and a second turntable position, which are respectively applied to drive the spindle (3) to rotate to three spindle positions, namely the main power supply closed position, the dual-open position and the backup power supply closed position. When the turntable (1) rotates from the middle position to the first position, or from the first position to the middle position, or from the middle position to the second position, or from the second position to the middle position, the rotation of the turntable (1) first drives the energy storage mechanism (2) to store energy, and then drives the locking mechanism to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy and drives the main shaft (3) to rotate to the corresponding main power supply closed position or double open position or backup power supply closed position or double open position.

3. The operating mechanism of the changeover switch according to claim 2, characterized in that: When the turntable (1) rotates from the middle position to the first position, the locking member is driven to release the lock on the main shaft (3) when it reaches the first position, so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the main power supply closed position. And / or, when the turntable (1) rotates from the first position to the middle position, the locking member is driven to release the lock on the main shaft (3) when the turntable (1) reaches the middle position, so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the double position; And / or, when the turntable (1) rotates from the middle position to the second position, when the turntable (1) reaches the second position, the drive locking member releases the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the backup power supply closed position. And / or, when the turntable (1) rotates from the second position to the middle position, when the turntable (1) reaches the middle position, the drive locking member releases the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the double position.

4. The operating mechanism of the changeover switch according to claim 2, characterized in that: The main shaft locking mechanism (5) includes two locking components, namely a first lever (51) and a second lever (52) that are respectively rotatably configured. When the turntable (1) rotates to the first position, the first lever (51) is driven to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the main power supply closed position, and the second elastic element drives the second lever (52) to lock the main shaft (3), so that the main shaft (3) cannot rotate to the double split position; When the turntable (1) rotates from the first position to the middle position, the second lever (52) is driven to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the double position, and the second elastic element drives the second lever (52) to lock the main shaft (3), so that the main shaft (3) cannot rotate to the backup power supply closed position, and the first elastic element (53) drives the first lever (51) to lock the main shaft (3), so that the main shaft (3) cannot rotate to the main power supply closed position; When the turntable (1) rotates to the second position, the second lever (52) is driven to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the backup power supply closing position, and the first elastic element (53) drives the first lever (51) to lock the main shaft (3), so that the main shaft (3) cannot rotate to the double split position; When the turntable (1) rotates from the second position to the middle position, the first lever (51) is driven to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the double position, and the second elastic element drives the second lever (52) to lock the main shaft (3), so that the main shaft (3) cannot rotate to the backup power supply closed position, and the first elastic element (53) drives the first lever (51) to lock the main shaft (3), so that the main shaft (3) cannot rotate to the main power supply closed position.

5. The operating mechanism of the changeover switch according to claim 4, characterized in that: The first lever (51) is provided with a first lever locking part (511), the second lever (52) is provided with a second lever locking part (521), and the main shaft (3) is provided with a first locking part (411), a second locking part (413), a third locking part (421) and a fourth locking part (423). When the turntable (1) is in the middle position and the spindle (3) is in the double split position, the first locking part (411) is locked to the first lever locking part (511) of the first lever (51), and the third locking part (421) is locked to the second locking part (413) of the second lever (52); when the turntable (1) is in the first position and the spindle (3) is in the main power closed position, the fourth locking part (423) is locked to the second locking part (413) of the second lever (52); when the turntable (1) is in the second position and the spindle (3) is in the backup power closed position, the second locking part (413) is locked to the first lever locking part (511) of the first lever (51).

6. The operating mechanism of the changeover switch according to claim 5, characterized in that: A baffle (4) is provided on the main shaft (3), and a first locking part (411), a second locking part (413), a third locking part (421) and a fourth locking part (423) are provided on the baffle (4).

7. The operating mechanism of the changeover switch according to claim 6, characterized in that: The baffle (4) is a fan-ring structure arranged around the main shaft (3), having a baffle arc edge (43), a first baffle straight edge and a second baffle straight edge. A first locking notch (412) is provided at the connection position between the baffle arc edge (43) and the first baffle straight edge. The first locking notch (412) has a first locking straight edge and a first positioning arc edge. The first positioning arc edge is connected between the first locking straight edge and the first baffle straight edge. The first locking part (411) is the first locking straight edge, and the second locking part (413) is the first baffle straight edge. A second locking notch (422) is provided at the connection position between the baffle arc edge (43) and the second baffle straight edge. The second locking notch (422) has a second locking straight edge and a second positioning arc edge. The second positioning arc edge is connected between the second locking straight edge and the second baffle straight edge. The third locking part (421) is the second locking straight edge, and the fourth locking part (423) is the second baffle straight edge.

8. The operating mechanism of the changeover switch according to claim 4, characterized in that: The turntable (1) is provided with a first unlocking protrusion (12), a second unlocking protrusion (13), a third unlocking protrusion (14) and a fourth unlocking protrusion (15). The first lever (51) is provided with a first unlocking engagement structure, which includes a first engagement part (512) and a second engagement part (513). The second lever (52) is provided with a second unlocking engagement structure, which includes a third engagement part (522) and a fourth engagement part (523). When the turntable (1) rotates from the middle position to the first position, the first unlocking protrusion (12) pushes against the first mating part (512) to drive the first lever (51) to release the locking engagement with the main shaft (3); when the turntable (1) rotates from the first position to the middle position, the fourth unlocking protrusion (15) pushes against the fourth mating part (523) to drive the second lever (52) to release the locking engagement with the main shaft (3); when the turntable (1) rotates from the middle position to the second position, the third unlocking protrusion (14) pushes against the third mating part (522) to drive the second lever (52) to release the locking engagement with the main shaft (3); when the turntable (1) rotates from the second position to the middle position, the second unlocking protrusion (13) pushes against the second mating part (513) to drive the first lever (51) to release the locking engagement with the main shaft (3).

9. The operating mechanism of the changeover switch according to claim 4, characterized in that: The first lever (51) and the second lever (52) are arranged side by side with intervals. The first end of the first lever (51) is rotatably arranged, and the second end of the first lever (51) is provided with a first unlocking engagement structure. The first end of the second lever (52) is rotatably arranged, and the second end of the second lever (52) is provided with a second unlocking engagement structure. The side of the first lever (51) with a first lever locking part (511) and the side of the second lever (52) with a second lever locking part (521) are arranged relatively with intervals and are located on both sides of the main shaft (3). The first lever locking part (511) and the second lever locking part (521) are respectively used to lock the main shaft (3). The turntable (1) drives the first lever (51) and the second lever (52) to release the lock on the main shaft (3) through the first unlocking engagement structure and the second unlocking engagement structure, respectively.

10. The operating mechanism of the changeover switch according to claim 1, characterized in that: The turntable (1) can rotate to two positions, namely the first position and the second position, which correspond to the rotation of the drive spindle (3) to two spindle positions, namely the main power supply closed position and the backup power supply closed position. When the turntable (1) rotates from the first position to the second position, or from the second position to the first position, the rotation of the turntable (1) first drives the energy storage mechanism (2) to store energy, and then drives the locking mechanism to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy and drives the main shaft (3) to rotate to the corresponding backup power supply closing position or main power supply closing position.

11. The operating mechanism of the changeover switch according to claim 10, characterized in that: The main shaft locking mechanism (5) includes two locking components, namely a first lever (51) and a second lever (52) that are respectively rotatably configured. When the turntable (1) rotates from the first position to the second position, the second lever (52) is driven to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the backup power supply closed position, and the first elastic element (53) drives the first lever (51) to lock the main shaft (3), so that the main shaft (3) cannot rotate to the main power supply closed position; When the turntable (1) rotates from the second position to the first position, the first lever (51) is driven to release the lock on the main shaft (3), so that the energy storage mechanism (2) releases energy to drive the main shaft (3) to rotate to the main power supply closed position, and the second elastic element drives the second lever (52) to lock the main shaft (3), so that the main shaft (3) cannot rotate to the backup power supply closed position.

12. The operating mechanism of the changeover switch according to any one of claims 4-9 and 11, characterized in that: The first elastic element (53) also serves as the second elastic element, that is, the first elastic element (53) and the second elastic element are the same elastic element, and the first elastic element (53) is connected between the first lever (51) and the second lever (52).

13. The operating mechanism of the changeover switch according to claim 1, characterized in that: The turntable (1) includes a turntable rotating part in the middle. The turntable rotating part has a turntable operating part (16) and a turntable driving part (17) protruding on opposite radial sides. The turntable driving part (17) is provided with a turntable eccentric shaft (11). The turntable driving part (17) is provided with a receiving cavity (18) located between the turntable eccentric shaft (11) and the turntable rotating part. The main shaft (3) has one end of the main shaft eccentric shaft (31) and the energy storage mechanism (2) placed in the receiving cavity (18).

14. The operating mechanism of the changeover switch according to claim 1 or 13, characterized in that: When the turntable (1) is located in the middle position and the main shaft (3) is in the double split position, the rotation center of the turntable (1), the rotation center of the main shaft (3), the main shaft eccentric shaft (31) and the turntable eccentric shaft (11) are arranged in a straight line at intervals; and / or, the energy storage mechanism (2) is a spring, with both ends of the spring connected to the turntable eccentric shaft (11) of the turntable (1) and the main shaft eccentric shaft (31) of the main shaft (3).

15. The operating mechanism of the changeover switch according to claim 1 or 13, characterized in that: The turntable eccentric shaft (11) is integrally formed with the turntable (1), or the turntable eccentric shaft (11) is set in the turntable mounting groove (171) on the turntable (1) and rotates synchronously with the turntable (1).

16. The operating mechanism of the changeover switch according to claim 1, characterized in that: The spindle eccentric shaft (31) is integrally formed with the spindle (3); or, the radial protrusion of the spindle (3) is provided with two spindle protrusions (32) spaced apart along the axial direction of the spindle (3), the spindle protrusions (32) are provided with spindle mounting holes (33), and the spindle eccentric shaft (31) is set in the spindle mounting holes (33) and rotates synchronously with the spindle (3).

17. The operating mechanism of the changeover switch according to claim 1, characterized in that: It also includes an automatic operating mechanism (6), which includes a first electromagnetic mechanism (63), a second electromagnetic mechanism (64), a first drive rod (62), and a rotating component (61). The first drive rod (62) is located between the first electromagnetic mechanism (63) and the second electromagnetic mechanism (64). The first drive rod (62) is provided with a drive groove (621). The rotating component (61) is coaxial with the turntable (1) and rotates synchronously. The rotating component (61) includes a push rod (611), which is slidably inserted in the drive groove (621). The first electromagnetic mechanism (63) and the second electromagnetic mechanism (64) are respectively used to drive the first drive rod (62) to move in opposite directions, so that the first drive rod (62) drives the rotating component (61) through the push rod (611) to drive the turntable (1) to rotate to the first position and the second position of the turntable.

18. The operating mechanism of the changeover switch according to claim 17, characterized in that: The drive groove (621) has a first drive surface (622) near the second electromagnetic mechanism (64) and a second drive surface (623) near the first electromagnetic mechanism (63) on both sides along its length. The first electromagnetic mechanism (63) drives the first drive rod (62) to push the push rod (611) through the first drive surface (622) and move it towards the first electromagnetic mechanism (63). The second electromagnetic mechanism (64) drives the first drive rod (62) to push the push rod (611) through the second drive surface (623) and move it towards the second electromagnetic mechanism (64).

19. The operating mechanism of the changeover switch according to claim 17, characterized in that: The automatic operating mechanism (6) further includes a third electromagnetic mechanism (65), a second drive rod (66), and a connecting rod (67). The connecting rod (67) is rotatably connected to the second drive rod (66) and the rotating component (61) respectively. The second drive rod (66) is located between the third electromagnetic mechanism (65) and the rotating component (61). The third electromagnetic mechanism (65) is used to drive the second drive rod (66), so that the second drive rod (66) drives the rotating component (61) through the connecting rod (67) to drive the turntable (1) to rotate towards the middle position of the turntable. And / or, the operating mechanism also includes a housing (8), in which a bracket (7) is provided, a main shaft (3) extends out of the housing (8) through the middle part of the housing (8), a main shaft locking mechanism (5) is provided in the housing (8), a turntable (1) is rotatably provided on one side of the bracket (7) and located between the main shaft locking mechanism (5) and the bracket (7), and an automatic operating mechanism (6) is located on the other side of the bracket (7), with one end of the rotating part (61) of the automatic operating mechanism (6) passing through the bracket (7) and connected to the turntable (1).

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