Operating mechanism and rotary disconnector

Abstract

The application provides an operating mechanism and a rotary isolating switch, and belongs to the technical field of low-voltage electrical apparatuses. The rotary isolating switch comprises a shell, a linkage middle mechanism and a plastic shell type four-link mechanism arranged in the shell, a rotating shaft for driving a contact of an on-off device connected to the plastic shell type four-link mechanism, and a middle mechanism for connecting a handle. The middle mechanism drives the plastic shell type four-link mechanism to act through the rotating shaft to drive the contact to open and close by operating the handle. Through linkage of the plastic shell type four-link mechanism and the middle mechanism, stability and other characteristics of the plastic shell type four-link mechanism in breaking and tripping are ensured, and the feature that the operating center of a traditional isolating switch coincides with the rotating center of the contact is retained. The plastic shell type four-link mechanism and an energy storage mechanism are arranged on one side of the middle mechanism, and a remote tripping mechanism is arranged on one side of the plastic shell type four-link mechanism. Through overall arrangement, the size of the switch is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage electrical apparatus, in particular to an operating mechanism and a rotary disconnecting switch. BACKGROUND

[0002] As a kind of switching device, disconnecting switch is mainly used for "isolating power supply, switching operation, connecting and cutting off small current circuit", and has no arc extinguishing function. When disconnecting switch is in the position of separation, there is a specified insulation distance and obvious disconnecting mark between contacts; when disconnecting switch is in the position of combination, it can bear the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time.

[0003] In traditional disconnecting switch, operating mechanism and contact system are coaxially arranged, and generally a torsional spring is used to drive separation and combination by compression and release, which needs a large torsional spring to meet excellent breaking performance of switch. When remote separation is needed, additional unlocking mechanism will make the switch body larger, and the whole switch will be more cumbersome, and the precision difference of torsional spring is large, and the overall stability and consistency are poor. SUMMARY

[0004] The present application aims to provide an operating mechanism and a rotary disconnecting switch, which introduces a plastic shell type four-bar linkage mechanism with stable breaking and tripping performance, and keeps consistent with the appearance characteristics and operation mode of traditional disconnecting switch through conversion of the middle mechanism.

[0005] Embodiments of the present application are implemented as follows:

[0006] One aspect of the embodiments of the present application provides an operating mechanism, which comprises a shell, a linkage middle mechanism and a plastic shell type four-bar linkage mechanism are arranged in the shell, the plastic shell type four-bar linkage mechanism is connected with a rotating shaft for driving contacts of an on-off device, and the middle mechanism is used for connecting a handle; by operating the handle, the middle mechanism drives the plastic shell type four-bar linkage mechanism to act to drive the contacts to separate or combine through the rotating shaft.

[0007] Optionally, one side of the middle mechanism is further connected with an energy storage mechanism, the energy storage mechanism comprises a resisting plate linked with the rotating shaft, one end of the resisting plate is arranged on the shell through a rotating shaft, a torsional spring is sleeved on the rotating shaft, and two ends of the torsional spring are connected with the shell and the resisting plate respectively.

[0008] Optionally, one side of the plastic shell type four-bar linkage mechanism is further connected with a remote tripping mechanism, and the remote tripping mechanism is connected with the plastic shell type four-bar linkage mechanism through a primary unlocking rod.

[0009] Optionally, the remote tripping mechanism is a magnetic flux reset structure, or the remote tripping mechanism is a split excitation reset structure.

[0010] Optionally, the center of the handle and the center of the rotating shaft coincide.

[0011] Optionally, a side plate is arranged in the shell, the intermediate mechanism comprises a handle twisting member rotatably connected to the side plate, and a rotating member coaxially arranged with the handle twisting member, the rotating member is rotatably connected with a first connecting rod and a support frame in sequence, the support frame is connected with the plastic shell type four connecting rod mechanism, and the rotating member, the first connecting rod, the support frame and the side plate form a four connecting rod mechanism.

[0012] Optionally, the handle twisting member and the rotating member are connected through a protrusion and a clamping groove respectively.

[0013] Optionally, the first connecting rod and the support frame are connected through a second connecting rod.

[0014] Optionally, the plastic shell type four connecting rod mechanism comprises a third connecting rod rotatably connected with the rotating shaft, the third connecting rod is further connected with a connecting shaft, a fourth connecting rod and a load buckle frame in sequence, the load buckle frame is rotatably connected with the side plate, an elastic member is arranged between the connecting shaft and the support frame, and the rotating shaft, the load buckle frame, the third connecting rod and the fourth connecting rod form a four connecting rod mechanism.

[0015] Optionally, the support frame and the connecting shaft are connected through an elastic member.

[0016] The embodiment of the application further provides a rotary isolating switch, which comprises the operating mechanism and a on-off device connected with the rotating shaft of the operating mechanism.

[0017] The embodiment of the application has the following beneficial effects:

[0018] The operating mechanism and the rotary isolating switch provided by the embodiment of the application have the following advantages: the shell of the operating mechanism is arranged with an intermediate mechanism, a plastic shell type four connecting rod mechanism, an energy storage mechanism and a remote tripping mechanism, the intermediate mechanism is used to be connected with a handle, the plastic shell type four connecting rod mechanism is connected with a rotating shaft, the rotating shaft is used to be connected with a contact of a on-off device, and the contact is driven to move to complete the opening and closing of the switch. The handle drives the intermediate mechanism to move, so as to drive the plastic shell type four connecting rod mechanism and the rotating shaft to move in sequence, and then the opening and closing of the contact is completed. Through the linkage of the plastic shell type four connecting rod mechanism and the intermediate mechanism, the stability and other characteristics of the plastic shell type four connecting rod mechanism in the opening and closing and tripping are ensured, and the feature that the operating center of the traditional isolating switch coincides with the rotating center of the contact is retained. The plastic shell type four connecting rod mechanism and the energy storage mechanism are arranged on one side of the intermediate mechanism, and the remote tripping mechanism is arranged on one side of the plastic shell type four connecting rod mechanism, so that the overall layout is effective to reduce the size of the switch. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 One of the operation mechanism structure schematic diagrams provided by the embodiments of the present application;

[0021] Figure 2 The second operation mechanism structure schematic diagram provided by the embodiments of the present application;

[0022] Figure 3 One of the operation mechanism partial structure schematic diagrams provided by the embodiments of the present application;

[0023] Figure 4 The second operation mechanism partial structure schematic diagram provided by the embodiments of the present application;

[0024] Figure 5 The third operation mechanism partial structure schematic diagram provided by the embodiments of the present application;

[0025] Figure 6 The fourth operation mechanism partial structure schematic diagram provided by the embodiments of the present application;

[0026] Figure 7 The four-bar linkage mechanism structure schematic diagram in the closed state of the operation mechanism provided by the embodiments of the present application;

[0027] Figure 8 The four-bar linkage mechanism structure schematic diagram in the open state of the operation mechanism provided by the embodiments of the present application;

[0028] Figure 9 The third operation mechanism structure schematic diagram provided by the embodiments of the present application;

[0029] Figure 10 The structure schematic diagram of the rotary isolating switch provided by the embodiments of the present application.

[0030] Icon:100-operating mechanism;101-housing;11-intermediate mechanism;110-torsion piece;111-first connecting rod;112-side plate;113-second connecting rod;114-support frame;115-rotating piece;116-flanging structure;117-positioning shaft;12-plastic shell type four connecting rod mechanism;121-fourth connecting rod;122-load buckle frame;1221-shaft;123-connecting shaft;124-third connecting rod;13-energy storage mechanism;131-abutting plate;132-torsion spring;133-rotating shaft;134-compression spring;14-remote tripping mechanism;141-secondary unlocking rod;142-push rod;15-primary unlocking rod;151-torsion spring;152-locking plate;16-rotating shaft;16a-connecting block;17-elastic member;200-rotary isolator;210-on-off device. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0032] Therefore, the detailed description of the embodiments of the present application provided below in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0033] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] Specifically, with reference to Figure 1 the embodiments of the present application provide an operating mechanism 100, comprising a housing 101, the housing 101 is provided with a linkage intermediate mechanism 11 and plastic shell type four connecting rod mechanism 12, the plastic shell type four connecting rod mechanism 12 is connected with rotating shaft 16 for driving the contact of on-off device 210, the intermediate mechanism 11 is used for connecting handle; by operating the handle, the intermediate mechanism 11 drives the plastic shell type four connecting rod mechanism 12 to act, so as to drive the contact to open and close by rotating shaft 16.

[0035] The housing 101 houses a centrally located mechanism 11, a plastic-shell four-bar linkage 12, an energy storage mechanism 13, and a remote tripping mechanism 14. The housing 101 also has a top cover (not shown) to enclose each mechanism within the housing 101, exposing only the portion connected to the handle. For example, such as... Figure 2 As shown, in one embodiment of this application, the central mechanism 11 and the plastic shell four-bar linkage 12 are arranged along a first direction, which is the width direction of the housing 101. An energy storage mechanism 13 is also connected to one side of the central mechanism 11, and a remote tripping mechanism 14 is also connected to the side of the plastic shell four-bar linkage 12 away from the energy storage mechanism 13. The energy storage mechanism 13 and the remote tripping mechanism 14 are both located on one side of the central mechanism 11 and the plastic shell four-bar linkage 12, respectively, along a direction perpendicular to the first direction, making the overall layout compact and effectively reducing the volume of the operating mechanism 100.

[0036] It should be understood that the above layout is only one possible implementation of the embodiments of this application, and is not the only limitation or the only supported solution for the layout of the central mechanism 11, the plastic shell four-bar linkage 12, the energy storage mechanism 13 and the remote tripping mechanism 14. The specific layout can be set according to actual needs. For example, the layout can also adopt a surrounding arrangement, a horizontal arrangement or a vertical arrangement, as long as the transmission can be realized.

[0037] The central mechanism 11 connects to the handle, and the plastic-shell four-bar linkage 12 connects to the rotating shaft 16. The rotating shaft 16 is connected to the contacts. When the handle is operated, the central mechanism 11 activates the plastic-shell four-bar linkage 12, causing the rotating shaft 16 to rotate and drive the contacts to open and close. The operating mechanism 100 provided in this embodiment, through the linkage of the plastic-shell four-bar linkage 12 and the central mechanism 11, ensures the stability of the plastic-shell four-bar linkage 12 in terms of breaking and tripping, while retaining the characteristic that the operating center of the traditional disconnector coincides with the rotation center of the contacts. When the handle is operated, the central mechanism 11 only needs to rotate a small angle to cause the rotating shaft 16 to rotate a large angle through the plastic-shell four-bar linkage 12, simplifying the transmission structure and reducing the overall size.

[0038] Furthermore, in one possible implementation of this application, the center of the handle and the center of the rotating shaft 16 coincide, thus making full use of the available operating space and improving the overall structural compactness. Of course, the center of the handle and the center of the rotating shaft 16 can also be set according to specific needs, as long as the required transmission can be guaranteed, and are not limited to the above-mentioned coincidence.

[0039] The remote tripping mechanism 14 is used to remotely trip the circuit to protect its safety when a circuit fault occurs. When the remote tripping mechanism 14 is activated, it causes the molded four-bar linkage 12 to activate, which drives the contacts to trip via the rotating shaft 16. The energy storage mechanism 13 is used to store energy when the intermediate mechanism 11 is activated, so as to supplement the excess closing force to the opening force, thus playing a role in energy recovery. The remote tripping mechanism 14 and the energy storage mechanism 13 are described in detail later.

[0040] In summary, the operating mechanism 100 provided in this embodiment includes a central mechanism 11, a plastic-shell four-bar linkage 12, an energy storage mechanism 13, and a remote tripping mechanism 14 within its housing 101. The central mechanism 11 connects to a handle, and the plastic-shell four-bar linkage 12 connects to a rotating shaft 16. The rotating shaft 16 connects to the contacts of the switching device, driving the contacts to actuate and complete the opening and closing of the circuit. The operating handle actuates the central mechanism 11, which in turn drives the plastic-shell four-bar linkage 12 and the rotating shaft 16 to actuate, thereby completing the opening and closing of the contacts. Through the linkage of the plastic-shell four-bar linkage 12 and the central mechanism 11, the stability of the plastic-shell four-bar linkage 12 in terms of breaking and tripping is ensured, while retaining the characteristic that the operating center of a traditional disconnector coincides with the rotation center of the contacts.

[0041] In addition, the operation of the central mechanism 11 drives the energy storage mechanism 13 to complete energy conversion, supplementing the excess closing force of the system to the opening force, thus completing energy recovery; the operation of the molded case four-bar linkage 12 is driven by the remote tripping mechanism 14 to complete the opening in case of circuit failure, ensuring circuit safety. The energy storage mechanism 13 is located on one side of the central mechanism 11, and the remote tripping mechanism 14 is located on one side of the molded case four-bar linkage. Through the overall layout, the size of the switch is also effectively reduced.

[0042] Specifically, such as Figure 3 As shown, a side plate 112 is provided inside the housing 101. There are two side plates 112, which are parallel and connected by a positioning shaft 117. For the central mechanism 11, the central mechanism 11 includes a torsion member 110 rotatably connected to the side plate 112, and a rotating member 115 coaxially arranged with the torsion member 110. The rotating member 115 is rotatably connected to a first connecting rod 111 and a support frame 114 in sequence. The support frame 114 is connected to the plastic shell type four-bar linkage 12. The first connecting rod 111 and the support frame 114 are connected by a second connecting rod 113. The rotating member 115, the first connecting rod 111, the support frame 114 and the side plate 112 form a four-bar linkage.

[0043] The top surface of the twisting member 110 is provided with a rectangular slot for matching a handle. After the handle is inserted into the rectangular slot, the handle can be rotated to rotate the twisting member 110. The rotating member 115 is coaxially arranged with the twisting member 110. When the twisting member 110 is rotated, the rotating member 115 is driven to rotate. For example, the twisting member 110 and the rotating member 115 are connected through a protrusion and a clamping groove, in other words, the bottom of the twisting member 110 is provided with a protrusion, and the top of the rotating member 115 is provided with a clamping groove. The protrusion and the clamping groove are matched to connect the twisting member 110 and the rotating member 115. Alternatively, the bottom of the twisting member 110 is provided with a clamping groove, and the top of the rotating member 115 is provided with a protrusion, which can also connect the twisting member 110 and the rotating member 115.

[0044] When the rotating member 115 is rotated, the first connecting rod 111, the second connecting rod 113 and the support frame 114 can be sequentially driven to rotate. The support frame 114 is connected with the rotating shaft 16 through the plastic shell type four connecting rod mechanism 12. The rotating member 115, the first connecting rod 111, the support frame 114 and the side plate 112 form a four connecting rod mechanism. Generally, in order to ensure a sufficient opening distance when the switch is opened, the rotating shaft 16 needs to drive the contact to rotate by 90°. Since the rotating shaft 16 is connected with the support frame 114 through the plastic shell type four connecting rod mechanism 12, when the support frame 114 is rotated relative to the side plate 112, the plastic shell type four connecting rod mechanism 12 can have a large displacement amount to achieve the required rotation angle of the rotating shaft 16. Since the rotating member 115, the first connecting rod 111, the support frame 114 and the side plate 112 form a four connecting rod mechanism, when the rotating member 115 is driven to rotate by the twisting member 110, the four connecting rod mechanism can be driven to act. Thus, only a small angle of the support frame 114 needs to be rotated, generally about 37°, and a large space is not required for the action of the support frame 114, so that the purpose of reducing the space and volume occupied by the switch is achieved.

[0045] Figure 7 Fig. 4 shows a state diagram of the four connecting rod mechanism formed by the rotating member 115, the first connecting rod 111, the support frame 114 and the side plate 112 in the closed state, Figure 8 Fig. 5 shows a state diagram of the four connecting rod mechanism formed by the rotating member 115, the first connecting rod 111, the support frame 114 and the side plate 112 in the open state. As shown in the figure, when the support frame 114 is driven to rotate by the rotating member 115, the support frame 114 has a small angle relative to the side plate 112 to achieve the required transmission.

[0046] After the four connecting rod mechanism formed by the rotating member 115, the first connecting rod 111, the support frame 114 and the side plate 112 acts, the plastic shell type four connecting rod mechanism 12 can be driven to act. For details, please refer to Figure 5The plastic shell type four-connecting rod mechanism 12 comprises a third connecting rod 124 rotatably connected with the rotating shaft 16, the third connecting rod 124 is further sequentially connected with a connecting shaft 123, a fourth connecting rod 121 and a load buckle frame 122, the load buckle frame 122 is rotatably connected with the side plate 112, the elastic member 17 is connected between the connecting shaft 123 and the support frame 114, and the rotating shaft 16, the load buckle frame 122, the third connecting rod 124 and the fourth connecting rod 121 form a four-connecting rod mechanism.

[0047] As shown in Figure 4 , the support frame 114 comprises two parallel flat plates and a vertical plate connecting one side of the two flat plates to form a "U" type structure, and the fourth connecting rod 121 is also two in number, and the two parallel fourth connecting rods 121 are connected by the vertical plate to also form a "U" type structure with the support frame 114. The rotating shaft 16 is rotatably arranged on the side plate 112, and the side plate 112 is further rotatably connected with the load buckle frame 122 through a shaft 1221, and the load buckle frame 122 also forms a "U" type structure; the support frame 114, the "U" type structure formed by the two fourth connecting rods 121, and the load buckle frame 122 are sequentially nested, in other words, the load buckle frame 122 is arranged in the two fourth connecting rods 121, the two fourth connecting rods 121 are arranged in the support frame 114, the "U" type openings of the support frame 114, the two fourth connecting rods 121 and the load buckle frame 122 face different directions, and the support frame 114 and the side plate 112 are located in the same plane.

[0048] The outer periphery of the rotating shaft 16 is provided with a connecting block 16a to connect the third connecting rod 124, and the third connecting rod 124 is two in number and is connected in parallel on the connecting block 16a on the outer periphery of the rotating shaft 16, and the other end of the two third connecting rods 124 is connected with the connecting shaft 123, and the end connected with the fourth connecting rod 121 is connected on the connecting shaft 123, and the other opening end is connected on the load buckle frame 122, as shown in Figure 4 , the elastic member 17 is connected between the connecting shaft 123 and the support frame 114, the elastic member 17 is a spring, the two ends of the spring are respectively connected on the support frame 114 and the connecting shaft 123, and in order to realize transmission, the number of springs is two to provide the elastic force required for opening and closing operation of the plastic shell type four-connecting rod mechanism 12; the above rotating shaft 16, load buckle frame 122, third connecting rod 124 and fourth connecting rod 121 form another four-connecting rod mechanism, when the support frame 114 rotates, the connecting shaft 123 is driven to rotate through the elastic member 17, so that the four-connecting rod mechanism formed by the rotating shaft 16, the load buckle frame 122, the third connecting rod 124 and the fourth connecting rod 121 acts, and further drives the rotating shaft 16 to act, thereby realizing opening and closing.

[0049] Figure 7 The state diagram of the four-connecting rod mechanism formed by the rotating shaft 16, the load buckle frame 122, the third connecting rod 124 and the fourth connecting rod 121 in the closed state is shown in Figure 8The diagram shows the state of the four-bar linkage formed by the rotating shaft 16, the mounting bracket 122, the third link 124, and the fourth link 121 in the open state. As can be seen from the diagram, when the rotating component 115 drives the support frame 114 to rotate, the support frame 114 rotates relative to the side plate 112. Due to the connection of the elastic component 17, the position of the connecting shaft 123 is changed between the support frame 114 and the connecting shaft 123, thereby realizing the required open operation.

[0050] It can be seen that the molded shell four-bar linkage 12 and the central mechanism 11 of this application each form a four-bar linkage, and the opening and closing of the circuit is achieved through the linkage of the two four-bar linkages. By linking the molded shell four-bar linkage 12 and the central mechanism 11, the operation handle driving the opening and closing of the circuit is changed from the original pull rod outer circumferential push-pull drive to the rotation drive of the rotating shaft 16. The central mechanism 11 only needs to rotate a small angle, which can make the rotating shaft 16 rotate a large angle through the molded shell four-bar linkage 12, simplifying the transmission structure and reducing the size of the operating mechanism 100.

[0051] Please refer to Figure 6 As shown, the operating mechanism 100 provided in this application embodiment also includes an energy storage mechanism 13. The energy storage mechanism 13 includes a support plate 131 that is linked with the rotating shaft 16. One end of the support plate 131 is mounted on the housing 101 via a rotating shaft 133. A torsion spring 132 is sleeved on the rotating shaft 133. The two ends of the torsion spring 132 are respectively connected to the housing 101 and the support plate 131.

[0052] The abutment plate 131 and the connecting block 16a of the rotating shaft 16 abut together. When closing, the rotating shaft 16 rotates, driving the connecting block 16a to push the abutment plate 131 to move. The movement of the abutment plate 131 causes the torsion spring 132 to twist and store energy. When opening, the torsion spring 132 releases energy to do work, driving the abutment plate 131 to reverse. In this way, the excess closing force during closing is stored in the torsion spring 132, and the energy stored in the torsion spring 132 is released during opening to compensate for the opening force required for opening. This changes the situation of excessive closing force and insufficient opening force, and maintains the stability of the system's opening and closing.

[0053] In addition, it can also be achieved through Figure 9 The compression spring 134 shown stores energy. One end of the compression spring 134 abuts against the housing 101, and the other end abuts against the support plate 131. The energy stored in the compression spring 134 is used to compensate for the opening force required for the circuit breaker to open. Its principle is the same as that of the torsion spring 132 mentioned above, and will not be described again here.

[0054] The remote tripping mechanism 14 is used to protect the circuit by driving the contact to open through the plastic shell four-bar linkage mechanism 12 when the circuit fails; wherein the remote tripping mechanism 14 is connected with the load release frame 122 of the plastic shell four-bar linkage mechanism 12 through a first unlocking lever 15, the first unlocking lever 15 is also connected with a lock plate 152, a torsional spring 151 is sleeved on the lock plate 152, two ends of the torsional spring 151 are connected with the shell 101 and the lock plate 152, and the lock plate 152 and the load release frame 122 are linked. The remote tripping mechanism 14 drives the first unlocking lever 15 to act, the first unlocking lever 15 drives the plastic shell four-bar linkage mechanism 12 to act through the lock plate 152, and the opening is completed.

[0055] Specifically, referring to Figure 2 , the remote tripping mechanism 14 can be a magnetic flux reset structure, which realizes opening after reset, and then resets the system to close by external force; after the magnetic flux is energized, the magnetic flux is discharged, the second unlocking lever 141 is driven to act, and the first unlocking lever 15 is driven to act to complete the opening through the plastic shell four-bar linkage mechanism 12; when reset is needed, the handle is rotated reversely, the flange structure 116 linked with the handle impacts the second unlocking lever 141 to act reversely, and the magnetic flux is pressed to reset.

[0056] The remote tripping mechanism 14 can also be a split excitation reset structure as shown in Figure 9 , which can automatically reset without external force. When the split excitation reset structure is energized, the magnetic flux is recovered, the first unlocking lever 15 is driven to act through the push rod 142 to complete the opening through the plastic shell four-bar linkage mechanism 12; because the reset spring is arranged in the remote tripping mechanism 14, the reset spring is deformed to accumulate energy when the magnetic flux is recovered, the magnetic flux is de-energized when reset, the magnetic flux is discharged when the reset spring releases energy, the push rod 142 is driven to act reversely, and the automatic reset to close is completed.

[0057] On the other hand, referring to Figure 10 , the application also provides a rotary disconnecting switch 200, which comprises the operating mechanism 100 in the foregoing embodiments and a on-off device 210 connected with the rotating shaft 16 of the operating mechanism 100. The rotary disconnecting switch 200 comprises the same structure and beneficial effects as the operating mechanism 100 in the foregoing embodiments. The structure and beneficial effects of the operating mechanism 100 have been described in detail in the foregoing embodiments, and will not be described here.

[0058] The above only describes the preferred embodiments of the application and is not used to limit the application. The application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An operating mechanism, characterized in that, The device includes a housing, within which are a centrally located mechanism and a plastic-shell four-bar linkage. The plastic-shell four-bar linkage is connected to a rotating shaft for driving the contacts of the on / off device, and the centrally located mechanism is used to connect a handle. The housing has a side plate inside. The central mechanism includes a torsion member rotatably connected to the side plate, the torsion member being connected to the handle, and a rotating member coaxially arranged with the torsion member. The rotating member is rotatably connected to a first connecting rod and a support frame in sequence. The support frame is connected to the plastic-shell four-bar linkage. The rotating member, the first connecting rod, the support frame, and the side plate form a four-bar linkage. By operating the handle, the central mechanism drives the plastic-shell four-bar linkage to move, thereby driving the contacts to open and close via the rotating shaft.

2. The operating mechanism according to claim 1, characterized in that, One side of the central mechanism is also connected to an energy storage mechanism. The energy storage mechanism includes a support plate that is linked to the rotating shaft. One end of the support plate is mounted on the housing via a rotating shaft. A torsion spring is sleeved on the rotating shaft. The two ends of the torsion spring are respectively connected to the housing and the support plate.

3. The operating mechanism according to claim 1, characterized in that, One side of the plastic-shell four-bar linkage is also connected to a remote release mechanism, which is connected to the plastic-shell four-bar linkage via a primary unlocking rod.

4. The operating mechanism according to claim 3, characterized in that, The remote tripping mechanism is a flux reset structure, or the remote tripping mechanism is a shunt reset structure.

5. The operating mechanism according to any one of claims 1-4, characterized in that, The center of the handle coincides with the center of the rotating shaft.

6. The operating mechanism according to claim 5, characterized in that, The torsion member and the rotation member are connected by a protrusion and a slot, respectively.

7. The operating mechanism according to claim 5, characterized in that, The first link and the support frame are connected by a second link.

8. The operating mechanism according to claim 5, characterized in that, The plastic shell type four-bar linkage includes a third link rotatably connected to the rotating shaft. The third link is also sequentially connected to a connecting shaft, a fourth link, and a fastener frame. The fastener frame is rotatably connected to the side plate. An elastic element is connected between the connecting shaft and the support frame. The rotating shaft, the fastener frame, the third link, and the fourth link form a four-bar linkage.

9. The operating mechanism according to claim 8, characterized in that, The support frame and the connecting shaft are connected by an elastic element.

10. A rotary disconnect switch, characterized in that, It includes the operating mechanism as described in any one of claims 1-9, and the on / off device connected to the rotating shaft of the operating mechanism.

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