Operating device for rotary switch

Abstract

The invention provides an operating device for a rotary switch. The operating device comprises a main shaft, a mounting bracket, a driving mechanism arranged on the mounting bracket, an energy storage mechanism and a locking mechanism, in a normal working state, manual switching-on operation or manual switching-off operation can be carried out by screwing the main shaft. And in case of overload, short circuit and the like, the controller sends out a control signal, a triggering mechanism (such as an electromagnet) starts the driving mechanism to execute a tripping action, and the energy storage mechanism is not locked by the locking mechanism any more, so that the energy storage mechanism enters a free tripping position. And then, the energy storage mechanism is started under the driving of the first elastic energy storage element, so that the energy storage mechanism drives the lower turntable to rotate through the transmission assembly of the shifting piece to drive the switch body assembly to rotate, thereby completing the automatic opening and disconnecting operation. And after the fault is eliminated, the driving mechanism is manually operated to re-execute the re-buckling movement, so that a re-buckling position (normal working state) is entered.

Description

Technical Field

[0001] The invention relates to a knob-type photovoltaic switch of a photovoltaic system, in particular to a knob-type photovoltaic switch which can automatically cut off power supply when a fault occurs. Background Art

[0002] With the widespread construction of photovoltaic systems in China, the safety of photovoltaic systems has gradually attracted the attention of the general public and has become a hot issue in the industry in recent years. Photovoltaic DC switches are used in inverters to control the working status of multiple core components. The reliability of photovoltaic DC switches is not only related to the smooth operation of the entire photovoltaic system, but also to the stable development of the photovoltaic industry.

[0003] The knob-type photovoltaic switches currently used in the market are basically manually operated. After a fault is found, the operator needs to manually disconnect the photovoltaic switch, which increases the safety risk of the operator and fails to meet the demand for rapid disconnection when a problem occurs. If the power supply can be quickly cut off when the inverter is working abnormally, the occurrence of burning accidents can be avoided and the safety of life and property in the photovoltaic power station can be protected. Therefore, when a problem occurs in the circuit, how to quickly cut off the DC switch has become an urgent problem to be solved in the photovoltaic power station.

[0004] The information disclosed in this background section is only intended to enhance understanding of the overall background of the invention and should not be taken as an acknowledgement or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an operating device for a rotary switch, which can quickly cut off the DC switch when the photovoltaic inverter works abnormally, thereby quickly cutting off the power supply, thereby avoiding the risk of manual operation and equipment failure. Of course, the present invention can also be used for any rotary switch that requires remote control and automatic switching state other than photovoltaic inverters.

[0006] Specifically, the present invention provides an operating device for a rotary switch, characterized in that it comprises:

[0007] Spindle;

[0008] A mounting bracket, wherein the mounting bracket is a cavity member including two mutually parallel side plates, and the main shaft is pivotally arranged through the two side plates;

[0009] A driving mechanism, comprising a driving member and a driven member, wherein the driving member is fixedly connected to the main shaft and the driven member is connected to a mounting bracket;

[0010] An energy storage mechanism is arranged in the mounting bracket, and comprises a pushing portion, a first elastic energy storage element, a tripping member and an output portion, wherein the pushing portion engages the follower, the output portion is connected to the moving contact of the switch, and the tripping member has a locking position and a releasing position, wherein in the releasing position, the first elastic energy storage element releases elastic potential energy to drive the output portion to move toward the closing position, and in the locking position, the first elastic energy storage element is locked by the tripping member and cannot be released;

[0011] a locking mechanism, the locking mechanism being disposed in the mounting bracket and having a locking member, wherein when the locking member engages with the jumper, the jumper maintains the locking position; when the locking member disengages from the jumper, the jumper enters the releasing position; and

[0012] A trigger mechanism is fixedly arranged relative to the mounting bracket and drives the locking mechanism in response to a control signal to cause the locking member to be separated from the jumping member.

[0013] The driven member has a pair of parallel straight arms, the ends of the straight arms are pivotally connected to the mounting bracket, and the mounting bracket has a pivot limit structure, which limits the pivot angle range of the mounting bracket;

[0014] The driving mechanism is a cam sliding groove mechanism, the driving member has an arc-shaped groove, the driven member has a connecting arm, and the connecting arm is provided with a sliding pin, and the sliding pin can slide in the arc-shaped groove; or the driving mechanism is a gear internal meshing mechanism, the driving member is a pinion, and the driven member has a ring-shaped portion, and an internal gear ring is partially formed inside the ring-shaped portion, and the driven member is meshed with the internal gear ring.

[0015] In the above operating device for a rotary switch, preferably, when the driving mechanism is a cam sliding slot mechanism, the mounting bracket is provided with a pin-accommodating slot, and the pin-accommodating slot accommodates the sliding pin.

[0016] In the above operating device for a rotary switch, preferably, the first elastic energy storage element is an energy storage spring, the energy storage mechanism is a multi-link mechanism, and the multi-link mechanism includes a jumper, an upper link, a lower link and a toggle member.

[0017] The jumper has a jumper shaft hole and a jumper pin, the pusher is formed as a protrusion on the middle profile of the jumper, the mounting bracket is provided with a jumper shaft, the jumper is pivotally connected to the mounting bracket through the jumper shaft hole, and the pusher engages the follower;

[0018] One end of the upper connecting rod is pivotally connected to the jumper through a jumper pin, and the other end is provided with an upper connecting rod pin;

[0019] One end of the lower link is pivotally connected to the upper link through an upper link pin, and the other end is pivotally connected to one end of the toggle member;

[0020] The toggle member is pivotally connected to the main shaft through a toggle member shaft hole provided in the middle thereof, and the other end of the toggle member constitutes the output portion;

[0021] The driven member has a spring hanging hole, one end of the energy storage spring is hung on the spring hanging hole of the driven member, and the other end is hung on the upper connecting rod pin of the upper connecting rod.

[0022] In the above-mentioned operating device for rotating the switch, preferably, it also includes a contact actuator, which includes a toggle shaft and a lower turntable, one end of the toggle shaft is connected to the output part, and the other end is connected to the lower turntable, and the lower turntable pivots around the main axis and is connected to the moving contact of the switch.

[0023] In the above-mentioned operating device for a rotary switch, preferably, a side plate of the mounting bracket is provided with an arc-shaped toggle shaft groove with the main shaft as the center, the toggle shaft passes through the toggle shaft groove, and the toggle shaft groove limits the moving range of the toggle shaft.

[0024] In the above operating device for a rotary switch, preferably, the lock mechanism further comprises a second elastic energy storage member, and the elastic force of the second elastic energy storage member tends to keep the lock in the locked position.

[0025] In the above-mentioned operating device for a rotary switch, preferably, the locking mechanism has a locking shaft fixed on the mounting bracket, the locking member can pivot around the locking shaft, and the second elastic energy storage member is a locking torsion spring, one end of the locking torsion spring is connected to the mounting bracket, and the other end is connected to the locking member.

[0026] In the above-mentioned operating device for a rotary switch, preferably, the jumper also has a locking protrusion, the locking mechanism includes a primary lock and a secondary lock, the locking member is a locking groove of the primary lock, the primary lock and the secondary lock both have the second elastic energy storage member, and the second elastic energy storage member includes a primary reset torsion spring and a secondary reset torsion spring,

[0027] The primary lock buckle also has a primary pivot, the primary lock buckle can pivot around the primary pivot, one end of the primary return torsion spring is engaged with the mounting bracket, and the other end is engaged with the primary lock buckle, and the locking groove can engage with or disengage from the locking protrusion as the primary lock buckle pivots.

[0028] The secondary lock also has a secondary pivot, a secondary abutment portion and a trigger portion that responds to the trigger mechanism. The secondary lock can pivot around the secondary pivot. One end of the secondary return torsion spring is engaged to the mounting bracket, and the other end is engaged to the secondary lock. The secondary abutment portion can abut to restrict or release the pivoting of the primary lock as the secondary lock pivots.

[0029] In the above-mentioned operating device for a rotary switch, preferably, the mounting bracket is provided with a limiting portion for limiting the rotation range of the locking member.

[0030] In the above-mentioned operating device for a rotary switch, preferably, the trigger mechanism is an electromagnet, and the electromagnet pushes the trigger part.

[0031] In the above operating device for a rotary switch, preferably, the mounting bracket is composed of a plurality of positioning shafts connecting the two mutually parallel side plates.

[0032] Through the above structure, the operating device for the rotary switch of the present invention can perform manual closing operation or manual opening operation under normal working conditions. When encountering overload, short circuit and other situations, the controller sends a control signal, the trigger mechanism (such as an electromagnet) starts the driving mechanism to perform the tripping action, and the locking mechanism no longer locks the energy storage mechanism, thereby entering the free tripping position (entering the fault state). Then, the energy storage mechanism is started under the drive of the first elastic energy storage element, so that the energy storage mechanism drives the lower turntable to rotate through the transmission component of the toggle member to drive the switch body component to rotate, thereby completing the automatic opening and disconnecting operation (fault opening movement). After the fault is eliminated, the re-locking movement can be re-executed by manually operating the driving mechanism, thereby entering the re-locking position (normal working state).

[0033] The operating device for a rotary switch of the present invention has the following beneficial technical effects: the driving mechanism adopts a cam groove mechanism or a gear meshing mechanism, and the operating mechanism can achieve more uniform torque in the entire external operating angle range, which is conducive to better operation. The locking mechanism is a two-level locking mechanism, which effectively reduces the required unlocking force, has smaller requirements on the trigger mechanism, improves system redundancy, and improves overall stability.

[0034] The methods and apparatus of the present invention have other features and advantages that will be apparent from, or will be described in detail in, the accompanying drawings and subsequent detailed descriptions incorporated herein, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 FIG. 1 is a perspective view of a first embodiment of an operating device for a rotary switch according to the present invention.

[0036] Figure 2 FIG. 1 is an exploded perspective view of a first embodiment of an operating device for a rotary switch according to the present invention.

[0037] Figure 3 It is an assembly diagram of some components of the first embodiment of the operating device for a rotary switch according to the present invention, which shows the partial installation relationship of the main shaft, the mounting bracket, the driving mechanism and the energy storage mechanism.

[0038] Figure 4 FIG. 1 is a view of a driving mechanism of a first embodiment of an operating device for a rotary switch according to the present invention.

[0039] Figure 5 It is an assembly diagram of some components of a first embodiment of an operating device for a rotary switch according to the present invention, which shows the matching relationship between a mounting bracket and a driven member of a driving mechanism.

[0040] Figure 6 FIG. 1 is a view of an energy storage mechanism according to a first embodiment of an operating device for a rotary switch of the present invention.

[0041] Fig. 7A An energy storage mechanism according to a first embodiment of an operating device for a rotary switch of the present invention is shown, wherein the energy storage mechanism is in an open state.

[0042] Figure 7B An energy storage mechanism according to a first embodiment of an operating device for a rotary switch of the present invention is shown, wherein the energy storage mechanism is in a closed state.

[0043] Figure 8 A single-stage latch mechanism for an operating device of a rotary switch according to the present invention is shown.

[0044] Fig. 9 The assembly diagram of the locking mechanism and the energy storage mechanism in the first embodiment of the operating device for a rotary switch according to the present invention is shown, wherein the locking mechanism is a two-stage locking mechanism.

[0045] Fig.10 An example of a contact actuator for an operating device of a rotary switch according to the present invention is shown.

[0046] Fig.11 FIG. 2 is a perspective view of a second embodiment of an operating device for a rotary switch according to the present invention.

[0047] Fig.12 FIG. 1 is a view of a driving mechanism of a second embodiment of an operating device for a rotary switch according to the present invention.

[0048] It should be understood that the accompanying drawings are not necessarily drawn to scale, and that they illustrate various features of the basic principles of the present invention that have been simplified to a certain extent. The specific design features of the present invention disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the application and use environment of the specific purpose.

[0049] In the drawings, reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. DETAILED DESCRIPTION

[0050] Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings shown. The exemplary embodiment is an example and can be implemented in various forms by those skilled in the art. Therefore, the present invention is not limited to the exemplary embodiment described in this article.

[0051] The operating device for a rotary switch according to the present invention is used as a photovoltaic switch of a photovoltaic system.

[0052] The operating device for a rotary switch according to the present invention comprises a main shaft 1 , a mounting bracket 2 , a driving mechanism, an energy storage mechanism and a locking mechanism arranged on the mounting bracket 2 .

[0053] The mounting bracket 2 is a hollow member including two mutually parallel side plates, through which the main shaft 1 is pivotally arranged.

[0054] exist Figure 1 , Figure 2 , Fig.11 In the example shown, the mounting bracket 2 is composed of two parallel side plates connected by multiple positioning shafts. However, the mounting bracket 2 is obviously not limited to the example shown in the figure, and any cavity component suitable for mounting relevant components in the operating device of the present invention can be used as the mounting bracket 2.

[0055] The mounting bracket 2 may have a pivot limiting structure. Figure 3 , Figure 5 An example of a pivoting limit structure is shown. Figure 3 , Figure 5 As shown, the two side plates of the mounting bracket 2 are each provided with an open slot 21 with one end open, and the bottom of the open slot 21 has an arc-shaped curved surface 211. Starting from the two sides of the open slot 21, toward the outside of the side plate of the mounting bracket 2, a C-shaped limit frame 22 is formed, so that the limit frame 22 protrudes outside the side plate of the mounting bracket 2. The limit frame 22 includes a limit plate 221 located on the outer side of the C-shape and a limit block 222 extending vertically from the outer limit plate 221, and the limit block 222 protrudes inward from the side of the open slot 21.

[0056] The two side plates of the mounting bracket 2 are each provided with an arc-shaped shifting shaft groove 23 with the main shaft 1 as the center. The two side plates of the mounting bracket 2 are also each provided with an arc-shaped pin receiving groove 24, and the pin receiving groove 24 and the arc surface portion 211 have a common center.

[0057] Driving mechanism

[0058] A driving mechanism is fixedly connected to the main shaft and can move relative to the mounting bracket. For example, the driving mechanism is connected to the main shaft 1 and can pivot relative to the mounting bracket 2 driven by the main shaft 1 .

[0059] In a normal use state, the drive mechanism can be manually operated to perform a closing action or an opening action.

[0060] When encountering overload, short circuit and other conditions (fault state), the trigger mechanism (such as electromagnet) unlocks the lock mechanism and no longer locks the energy storage mechanism, thereby entering the free tripping position. The unlocked tripping member 5 of the energy storage mechanism rotates in a direction away from the main shaft 1 under the action of the energy storage spring S, and at the same time, the energy storage mechanism drives the lower turntable 12 to rotate through the transmission component of the toggle member 8, so as to drive the toggle member of the photovoltaic switch to separate from the static contact, thereby completing the automatic opening and disconnecting operation.

[0061] The driving mechanism may include a driving member 3 and a driven member 4 meshing therewith, and rotating the driving member 3 will cause the driven member 4 to rotate, thereby providing torque for the movement of the energy storage mechanism. The rotation angle of the driving member 3 is greater than or equal to the rotation angle of the driven member 4.

[0062] Figures 1 to 9 The first embodiment according to the present invention is shown, wherein a cam sliding groove transmission is provided between the driving member 3 and the driven member 4 .

[0063] like Figure 4 , Figure 5 As shown, the driving member 3 is provided with an arc groove 31 and a driving member shaft hole 32 for mounting on the main shaft 1. The driving member 3 is fixedly mounted on the main shaft 1 through the driving member shaft hole 32 and can rotate with the main shaft 1. A connecting arm 44 is provided on the driven member (i.e., the handle) 4, and a sliding pin 45 is provided at the end of the connecting arm. The arc groove 31 in the sliding pin 45 is slidably matched, and the pin receiving groove 24 of the mounting bracket 2 accommodates the sliding pin 45.

[0064] The follower 4 has a bottom plate 41 and straight arms 42 on both sides, and the ends of the straight arms 42 are pivotally connected to the mounting bracket 2. The pivoting limiting structure of the mounting bracket 2 limits the pivoting angle range of the mounting bracket 2. Figure 3 , Figure 5 A pivot limiting structure is shown.

[0065] like Figure 3 , Figure 5 As shown, the end of the straight arm 42 has an arc-shaped pivot portion 421. The straight arm 42 is inserted into the opening slot 21, so that the pivot portion 421 pivotally engages the arc surface portion 211 of the opening slot 21 of the mounting bracket 2. At the same time, the outer limiting plate 221 of the limiting frame 22 places the handle idle between the two side plates of the mounting bracket 2. The straight arm 42 has a short arm 46 extending laterally. During the pivoting process of the follower 4, the limiting block 222 of the limiting frame 22 limits the pivoting range of the follower 4 by abutting the short arm 46. The mounting bracket 2 can also have an inner limiting plate (not shown), at which time, the outer limiting plate 221, the inner limiting plate and the limiting block 222 of the limiting frame 22 jointly limit the position and pivoting range of the follower 4.

[0066] The bottom plate 41 has a spring hanging hole 43 .

[0067] When the driving member 3 pivots, the arc groove 31 or the sliding pin 45 drives the driven member 4 to swing. The driven member 4 rotates with the center of the arc surface 211 of the opening groove 21 of the mounting bracket 2 as the axis.

[0068] like Fig.11 , Fig.12 As shown, in the second embodiment of the present invention, the driving member 3 and the driven member 4 are internally meshed with gears, and the other components are the same as those of the first embodiment of the present invention. Fig.11 , Fig.12 As shown, the driving member 3 is a pinion gear, and the driven member 4 has a ring-shaped portion, and an inner ring gear is partially formed inside the ring-shaped portion. When the driving member 3 pivots, the engagement between the pinion gear and the inner ring gear drives the driven member 4 to swing.

[0069] Energy storage mechanism

[0070] The energy storage mechanism is a multi-link mechanism, which is arranged in the mounting bracket and can store and release dynamic energy (such as elastic potential energy). In the event of overload, short circuit, etc., the moving contact and the static contact of the photovoltaic switch are driven to separate, thereby completing the automatic opening and disconnecting operation.

[0071] The energy storage mechanism is a multi-link mechanism and is arranged in the mounting bracket.

[0072] like Figure 6 As shown, the energy storage mechanism includes a jumper 5, an upper connecting rod 6, a lower connecting rod 7, a toggle member 8 and an energy storage spring S.

[0073] The jumper 5 includes a locking protrusion 51 , a jumper shaft hole 52 , a jumper pin 53 and a pushing portion 54 .

[0074] exist Figure 6In the example shown, the jumper 5 is substantially V-shaped and is composed of two jumper arms connected at one end. However, the shape of the jumper is not limited thereto.

[0075] The locking protrusion 51 is provided at one end of the jumper 5, and the jumper shaft hole 52 is provided at the other end of the jumper arm. The mounting bracket 2 is provided with a jumper shaft. The jumper 5 is pivotally connected to the mounting bracket 2 through the jumper shaft hole 52.

[0076] The jumper pin 53 is arranged in the middle of the jumper 5. The push portion 54 is formed as a protrusion on the middle profile of the jumper (5). The push portion 54 abuts against the driven member 4 of the driving mechanism.

[0077] One end of the upper connecting rod 6 is pivotally connected to the jumper 5 through the jumper pin 53, and the other end is pivotally connected to one end of the lower connecting rod 7 through the upper connecting rod pin 61.

[0078] One end of the lower connecting rod 7 is pivotally matched with the upper connecting rod pin 61 of the pin hole, and the other end is pivotally matched with the toggle member 8.

[0079] One end of the energy storage spring S is hooked on the spring hook hole 43 of the follower 4, and the other end is hooked on the upper connecting rod pin 61 of the upper connecting rod 6. The elastic force of the energy storage spring S presses the straight arm 42 of the follower 4 into the opening slot 21 of the mounting bracket 2, so that the pivoting portion 421 pivotally engages the arc surface portion 211 of the opening slot 21 of the mounting bracket 2.

[0080] As for the toggle member 8, it is pivotally connected to the main shaft 1 through a toggle member shaft hole 81 provided in the middle thereof, is pivotally connected to the connecting rod 7 through a toggle member pivot 82 provided at one end thereof, and serves as an output part through the other end thereof. The movement of the output part makes the moving contact of the switch engage with or leave the static contact of the switch.

[0081] exist Figure 6 In the example shown, the toggle member 8 is generally in the shape of an isosceles triangle, and a toggle member shaft hole 81 is formed at the top corner of the triangle for pivoting with the main shaft 1. A toggle member pivot 82 is provided at one bottom corner of the isosceles triangle, and the toggle member pivot 82 is pivotally connected to the other end of the connecting rod 7; a contact actuator component 11 is provided at another bottom corner of the isosceles triangle. The contact actuator is used to drive the contacts of the switch to open or close.

[0082] Fig. 7A The figure shows the positional relationship of the various components in the energy storage mechanism when the switch is in the open state. Figure 7B The figure shows the positional relationship of the various components in the energy storage mechanism when the switch is in the closed state.

[0083] The energy storage mechanism has four motion states, namely, re-locking motion, closing motion, opening motion, and free tripping motion. The following explains these four motions respectively.

[0084] Re-locking movement: When the energy storage mechanism is in the free tripping position (the fastened member of the locking mechanism is separated from the locking protrusion 51 of the jumper 5 of the energy storage mechanism), if the switch needs to be closed again, the follower 4 needs to be pushed in the first direction (the driving member 3 of the driving mechanism is driven in the first direction), and at the same time, the follower 4 pushes the jumper 5 to rotate in the first direction through the pushing portion 54 until the jumper 5 is locked by the locking mechanism, thereby entering the re-locking position. At this time, the jumper 5 has a tendency to move in the second direction under the force of the first elastic energy storage element. Fig. 7A and Figure 7B It is shown that the energy storage mechanism can be in the re-fastening position.

[0085] Closing movement: When the energy storage mechanism is in the re-engaging position, once the handle is forced to rotate in the second direction (the driving member 3 of the driving mechanism is driven along the second direction), the two ends of the energy storage spring S are respectively hooked on A (the spring hanging hole 43 of the follower 4) and B (the upper connecting rod pin 61 of the upper connecting rod 6). As the follower 4 rotates, a pulling force is generated. When the line of action AB of the pulling force coincides with the connecting rod BC (corresponding to the upper connecting rod 6), once the direction of the pulling force is on the other side of BC, the upper connecting rod 6 moves in the first direction under the action of the energy storage spring S, and the lower connecting rod 7 pushes the toggle member 8 to move to the closing position. Figure 7B The positional relationship of the various components in the energy storage mechanism when the switch is in the closed state is shown.

[0086] Opening movement: When the energy storage mechanism is in the closing position, once the follower 4 is forced to rotate in the first direction (the driving member 3 of the driving mechanism is driven along the first direction), the energy storage spring S generates a pulling force as the follower 4 rotates. When the line of action AB of the pulling force coincides with the connecting rod BC, once the direction of the pulling force is on the other side of BC, the upper connecting rod 6 moves in the second direction under the action of the energy storage spring S, and the lower connecting rod 7 pushes the toggle member 8 to move to the opening position. Fig. 7A The position relationship of each component in the energy storage mechanism is shown when the switch is in the open state.

[0087] Free tripping movement: When the locking mechanism moves in the first direction under the drive of the trigger mechanism, the locking of the tripping member 5 is released, and the energy storage mechanism pushes the tripping member 5 to move in the second direction under the action of the energy storage spring S, and finally forms a five-link mechanism, thereby entering the free tripping position of the energy storage mechanism. The trigger mechanism can be an electromagnet DM or a magnetic flux converter.

[0088] Contact actuator

[0089] exist Fig.10In the embodiment shown, the contact actuator includes a toggle shaft 11 and a lower rotary disk 12, and the lower rotary disk 12 can rotate around the main shaft 1. One end of the toggle shaft 11 is connected to the toggle member 8, and the other end is connected to the lower rotary disk 12. When the toggle member 8 rotates around the main shaft 1, the lower rotary disk 12 is driven to rotate, thereby driving the moving contact and the static contact to separate or close, so as to realize the opening and closing of the switch.

[0090] It should be pointed out that the contact actuator of the present invention can adopt various structures and is not limited to the structure shown in the figure. Any structure that can drive the moving contact and the static contact to separate or close is feasible.

[0091] Locking mechanism

[0092] The locking mechanism is arranged in the mounting bracket to control the storage and release of the power energy of the energy storage mechanism.

[0093] The locking mechanism is arranged in the mounting bracket and has a locking member. When the locking member engages with the jumper, the jumper maintains a locked position; when the locking member disengages from the jumper, the jumper enters a released position.

[0094] The lock mechanism further comprises a second elastic energy storage member, the elastic force of which tends to keep the lock in a locked position.

[0095] The mounting bracket 2 may be provided with a limiting portion 25 for limiting the rotation range of the locking member.

[0096] The locking mechanism can be a single-stage locking mechanism or a multi-stage locking mechanism. The multi-stage locking mechanism helps to reduce the force required for unlocking, has smaller requirements for the trigger mechanism, improves system redundancy, and improves overall stability.

[0097] Figure 8 The single-stage locking mechanism of the operating device for the rotary switch according to the present invention is shown. Figure 8 As shown, the single-stage locking mechanism 9 has a locking shaft 91 fixed on the mounting bracket 2, and a locking groove 92 as a locking member can pivot around the locking shaft 91. The second elastic energy storage member is a locking torsion spring 93, one end of the locking torsion spring 93 is connected to the mounting bracket 2, and the other end is connected to the locking member.

[0098] Fig. 9The linkage relationship between the locking mechanism and the energy storage mechanism is shown, wherein the locking mechanism is a secondary locking mechanism, which includes a primary locking mechanism 9 and a secondary locking mechanism 10. The primary locking mechanism 9 is used to directly lock or unlock the jumper 5 of the locking mechanism. The secondary locking mechanism 10 is used to restrict or release the restriction of the primary locking mechanism 9. The secondary locking mechanism 10 is triggered and started by a trigger mechanism (e.g., an electromagnet DM shown in the figure).

[0099] like Fig. 9 The figure shows a two-stage locking mechanism, including a primary locking buckle 9 and a secondary locking buckle 10. Both the primary locking buckle 9 and the secondary locking buckle 10 have the second elastic energy storage member, which is a return torsion spring (93, 103). The locking member is the locking groove 92 of the primary locking buckle 9.

[0100] The primary lock buckle 9 also has a primary pivot 91, and the primary lock buckle 9 can pivot around the primary pivot 91. A primary return torsion spring 93 is sleeved on the primary pivot 91, and one end of the primary return torsion spring 93 is engaged with the mounting bracket 2, and the other end is engaged with the primary lock buckle 9. The primary locking groove 92 can engage with or disengage from the locking protrusion 51 as the primary lock buckle 9 pivots.

[0101] The secondary lock buckle 10 also has a secondary pivot 101, a secondary abutting portion 102 and a triggering portion 104 that responds to the trigger mechanism. The secondary lock buckle 10 can pivot around the secondary pivot 101. A secondary return torsion spring 103 is sleeved on the secondary pivot 101, one end of the secondary return torsion spring 103 is coupled to the mounting bracket, and the other end is coupled to the secondary lock buckle 10, and the secondary abutting portion 102 can abut to restrict or release the pivoting of the primary lock buckle 9 as the secondary lock buckle 10 pivots.

[0102] When encountering a fault such as overload or short circuit, the controller (not shown) sends a control signal to the trigger mechanism (electromagnet) according to the detected fault signal. The action of the electromagnet pushes the trigger unit 104. At this time, Fig. 9 As shown, the electromagnet drives the secondary lock 10 to rotate counterclockwise around the secondary pivot 101, and the secondary lock 10 further drives the primary lock 9 to pivot around the primary pivot 91, so that the jumper 5 of the energy storage mechanism is no longer locked, and the energy storage mechanism performs a free tripping movement.

[0103] In summary, the operating device for a rotary switch according to the present invention has four working positions: a free tripping position, a re-tripping position, a closing position, and an opening position.

[0104] Under normal working conditions, the locking mechanisms 9 and 10 lock the energy storage mechanisms 5, 6, 7 and 8, and the mechanisms are in the relocking position. In the relocking position (normal working conditions), the energy storage mechanism can be in the closing position or the opening position.

[0105] It should be pointed out that the normal working state includes both the closed position and the open position, because normal management and scheduling also require closing or opening operations.

[0106] When encountering overload, short circuit and other situations, the control center sends a signal to the trigger mechanism (such as an electromagnet) to start the driving mechanism to perform the tripping action, and the locking mechanism no longer locks the energy storage mechanism. At this time, the mechanism enters the free tripping position (enters the fault state). Then, the tripping member 5 of the energy storage mechanism rotates in the direction away from the main axis under the action of the energy storage spring, and at the same time, the energy storage mechanism drives the lower turntable to rotate through the transmission component of the toggle member 8 to drive the switch body component to rotate, thereby completing the automatic opening and disconnecting operation (opening movement).

[0107] After troubleshooting, firstly, it is necessary to re-execute the re-engagement movement (manual operation of the drive mechanism is required) to enter the re-engagement position (normal working state).

[0108] For convenience in explanation and precise definition of the appended claims, the terms “upper,” “lower,” “inner,” and “outer” are used to describe features of the exemplary embodiments with reference to the positions of such features as shown in the figures.

[0109] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to be exhaustive of the present invention, or to limit the present invention to the precise form disclosed, and it is apparent that many changes and variations may be made in accordance with the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that other technicians in the field can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the appended claims and their equivalents.

Claims

1. An operating device for a rotary switch, characterized in that: include: Spindle (1); A mounting bracket (2), the mounting bracket (2) being a hollow component comprising two mutually parallel side plates, the main shaft (1) passing through the two side plates and being pivotally arranged; A driving mechanism, comprising a driving member (3) and a driven member (4), wherein the driving member (3) is fixedly connected to the main shaft (1), and the driven member (4) is connected to a mounting bracket; An energy storage mechanism is arranged in the mounting bracket, comprising a pushing portion (54), a first elastic energy storage element, a tripping member and an output portion, wherein the pushing portion engages the follower (4), the output portion is connected to a moving contact of a switch, and the tripping member has a locking position and a releasing position. In the releasing position, the first elastic energy storage element releases elastic potential energy to drive the output portion to move toward the closing position, and in the locking position, the first elastic energy storage element is locked by the tripping member and cannot be released; A locking mechanism, the locking mechanism is arranged in the mounting bracket, and has a locking member, when the locking member is engaged with the jumper, the jumper maintains the locking position; when the locking member is disengaged from the jumper, the jumper enters the release position; as well as A trigger mechanism is fixedly arranged relative to the mounting bracket (2) and drives the locking mechanism in response to a control signal to cause the locking member to disengage from the jumping member. The driven member (4) has a pair of parallel straight arms (42), the ends of the straight arms (42) are pivotally connected to the mounting bracket (2), and the mounting bracket (2) has a pivot limit structure, which limits the pivot angle range of the mounting bracket (2); The driving mechanism is a cam sliding groove mechanism, the driving member (3) has an arc groove (31), the driven member (4) has a connecting arm (44), and the connecting arm (44) is provided with a sliding pin (45), and the sliding pin (45) can slide in the arc groove (31); or the driving mechanism is a gear internal meshing mechanism, the driving member (3) is a small gear, and the driven member (4) has a ring-shaped portion, and an internal gear ring is partially formed inside the ring-shaped portion, and the (3) and the internal gear ring are meshed with each other.

2. The operating device for a rotary switch according to claim 1, characterized in that: When the driving mechanism is a cam sliding groove mechanism, the mounting bracket (2) is provided with a pin accommodating groove (24), and the pin accommodating groove (24) accommodates the sliding pin (45).

3. The operating device for a rotary switch according to claim 1, characterized in that: The first elastic energy storage element is an energy storage spring (S), the energy storage mechanism is a multi-link mechanism, and the multi-link mechanism comprises a jumper (5), an upper link (6), a lower link (7) and a toggle member (8). The jumper (5) has a jumper shaft hole (52) and a jumper pin (53), the pushing portion (54) is formed as a protrusion on the middle profile of the jumper (5), the mounting bracket (2) is provided with a jumper shaft, the jumper (5) is pivotally connected to the mounting bracket (2) through the jumper shaft hole (52), and the pushing portion (54) engages the follower (4); One end of the upper connecting rod (6) is pivotally connected to the jumper (5) via a jumper pin (53), and the other end is provided with an upper connecting rod pin (61); One end of the lower connecting rod (7) is pivotally connected to the upper connecting rod (6) via an upper connecting rod pin (61), and the other end is pivotally connected to one end of the toggle member (8); The toggle member (8) is pivotally connected to the main shaft (1) through a toggle member shaft hole (81) provided in the middle thereof, and the other end of the toggle member (8) constitutes the output portion; The driven member (4) has a spring hanging hole (43); one end of the energy storage spring (S) hangs on the spring hanging hole (43) of the driven member (4), and the other end hangs on the upper connecting rod pin (61) of the upper connecting rod (6).

4. The operating device for a rotary switch according to claim 3, characterized in that: The switch also comprises a contact actuator, which comprises a toggle shaft (11) and a lower rotating disk (12). One end of the toggle shaft (11) is connected to the output portion, and the other end is connected to the lower rotating disk (12). The lower rotating disk (12) pivots around the main shaft (1) and is connected to the moving contact of the switch.

5. The operating device for a rotary switch according to claim 4, characterized in that: A circular arc-shaped shifting shaft groove (23) with the main shaft (1) as the center is provided on the side plate of the mounting bracket (2); the shifting shaft (11) passes through the shifting shaft groove (23); and the shifting shaft groove (23) limits the moving range of the shifting shaft (11).

6. The operating device for a rotary switch according to claim 1, characterized in that: The lock mechanism further comprises a second elastic energy storage member, the elastic force of which tends to keep the lock in a locked position.

7. The operating device for a rotary switch according to claim 6, characterized in that: The locking mechanism comprises a locking shaft fixed on the mounting bracket (2), the locking member can pivot around the locking shaft, and the second elastic energy storage member is a locking torsion spring, one end of the locking torsion spring is connected to the mounting bracket, and the other end is connected to the locking member.

8. The operating device for a rotary switch according to claim 6, characterized in that: The jumper also has a locking protrusion (51), the locking mechanism comprises a primary lock (9) and a secondary lock (10), the locking member is a locking groove (92) of the primary lock (9), the primary lock (9) and the secondary lock (10) both have the second elastic energy storage member, the second elastic energy storage member comprises a primary reset torsion spring (93) and a secondary reset torsion spring (103), The primary lock buckle (9) further comprises a primary pivot (91), the primary lock buckle (9) can pivot around the primary pivot (91), one end of the primary return torsion spring (93) is engaged with the mounting bracket, and the other end is engaged with the primary lock buckle (9), and the locking groove (92) can engage with or disengage from the locking protrusion (51) as the primary lock buckle (9) pivots. The secondary lock buckle (10) further comprises a secondary pivot (101), a secondary abutting portion (102) and a trigger portion (104) that responds to the trigger mechanism and acts; the secondary lock buckle (10) can pivot around the secondary pivot (101); one end of the secondary return torsion spring (103) is coupled to the mounting bracket, and the other end is coupled to the secondary lock buckle (10); the secondary abutting portion (102) can abut to restrict or release the pivoting of the primary lock buckle (9) as the secondary lock buckle (10) pivots.

9. The operating device for a rotary switch according to claim 6, characterized in that: The mounting bracket (2) is provided with a limiting portion (25) for limiting the rotation range of the locking member.

10. The operating device for a rotary switch according to claim 8, characterized in that: The trigger mechanism is an electromagnet, and the electromagnet pushes the trigger part (104).

11. The operating device for a rotary switch according to claim 1, characterized in that: The mounting bracket (2) is composed of a plurality of positioning shafts connecting the two mutually parallel side plates.

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