CN220672461U - Isolating switch transmission device and isolating switch - Google Patents

Abstract

The embodiment of the application provides an isolating switch transmission device and an isolating switch, wherein the isolating switch transmission device comprises a shell, a handle, a linkage structure, a transmission piece, a moving contact and a fixed contact; the handle is rotationally connected to the shell; the transmission piece is connected to the handle through a linkage structure and rotates together with the handle; a first connecting point and a second connecting point are arranged between the moving contact and the transmission piece and are used for connecting the moving contact to the transmission piece and rotating together with the transmission piece; the second connection point is in gap connection; the fixed contact is connected to the shell and is positioned on the rotating track of the moving contact; the moving contact rotates to the position of the fixed contact along the rotating track, and when the moving contact contacts the fixed contact, the moving contact and the fixed contact are in a closed state; when the moving contact leaves the position where the fixed contact is located and the distance between the moving contact and the fixed contact is a preset distance, the moving contact and the fixed contact are in an open state; the preset distance is greater than or equal to the shortest insulation distance between the moving contact and the fixed contact.

Description

Isolating switch transmission device and isolating switch

Technical Field

The embodiment of the application relates to the technical field of electrical equipment, in particular to an isolating switch transmission device and an isolating switch.

Background

An isolating switch is a switching device for isolating a power supply. When the isolating switch is in an off state, an insulation distance meeting the specified requirement and an obvious off mark are arranged between the contacts; in the closed state, a switching device is provided in which a current under normal loop conditions and a current under abnormal conditions can be passed between contacts for a predetermined period of time.

During use, contacts in the disconnector often wear. In the related art, the contacts are generally protected, so that the abrasion of the contacts is delayed, the service life is prolonged, but the abrasion condition of the contacts cannot be known in real time, and the contacts with serious abrasion cannot be replaced in time, so that the contacts of the isolating switch cannot be ensured to stably and continuously pass through current when in a closed state.

Disclosure of Invention

In view of the foregoing, embodiments of the present application provide a disconnector actuator and a disconnector that overcome or at least partially solve the foregoing problems.

According to one aspect of an embodiment of the present application, there is provided an isolating switch gear, the device comprising: the device comprises a shell, a handle, a linkage structure, a transmission piece, a moving contact and a fixed contact; the handle is rotationally connected to the shell; the transmission piece is connected to the handle through a linkage structure and rotates together with the handle; a first connecting point and a second connecting point are arranged between the moving contact and the transmission piece and are used for connecting the moving contact to the transmission piece and rotating together with the transmission piece; the second connection point is in gap connection; the fixed contact is connected to the shell and is positioned on the rotating track of the moving contact; the moving contact rotates to the position of the fixed contact along the rotating track, and when the moving contact contacts with the fixed contact, the moving contact and the fixed contact are in a closed state; when the moving contact leaves the position where the fixed contact is located and the distance between the moving contact and the fixed contact is a preset distance, the moving contact and the fixed contact are in an open state; the preset distance is larger than or equal to the shortest insulation distance between the moving contact and the fixed contact.

The isolating switch transmission device provided by the embodiment of the application comprises a shell, a handle, a linkage structure, a transmission piece, a moving contact and a fixed contact; the movable contact is connected to the transmission member through the first connection point and the second connection point, and the transmission member is connected to the handle through the linkage structure, so that the handle can indirectly drive the movable contact to rotate through the transmission member. Because the fixed contact is arranged on the rotating track of the movable contact, when the handle drives the movable contact to rotate clockwise or anticlockwise, the movable contact can approach the fixed contact until touching the fixed contact, and the movable contact and the fixed contact are in a closed state; when the handle drives the moving contact to rotate anticlockwise or clockwise, the moving contact is far away from the fixed contact until reaching a preset distance, and when the distance between the moving contact and the fixed contact is not smaller than the shortest insulation distance, the moving contact and the fixed contact are in an off state, so that the preset distance is larger than or equal to the shortest insulation distance. The contact exists between the moving contact and the fixed contact, so that the abrasion of the moving contact is caused, the rotating stroke of the moving contact is increased, and the connection between the moving contact and the fixed contact becomes unstable; the second connection point between the transmission piece and the moving contact is set to be in gap connection, and the moving contact moves in the gap in the second connection point, so that the rotating stroke of the moving contact is prolonged, the moving contact in a normal wear range can still touch the fixed contact stably, and the stability of connection between the moving contact and the fixed contact is ensured; meanwhile, the abrasion degree of the moving contact can be easily judged by observing the position of the moving contact in the gap in the second connecting point in the closed state, so that a new moving contact can be timely replaced to ensure continuous and stable connection between the moving contact and the fixed contact. The problem that current cannot be stably and continuously passed between contacts of the isolating switch in a closed state due to incapability of judging abrasion condition of a moving contact in the related art is solved.

In some embodiments, the first connection point includes a first fixed shaft and a first connection hole; the first fixed shaft is arranged on the shell, and the transmission piece is rotationally connected to the shell through the first fixed shaft; the first connecting hole is formed in the movable contact, and the first connecting hole is sleeved on the first fixed shaft, so that the movable contact is connected to the shell to form the first connecting point.

Through the scheme, the first connecting point is one connecting point of the transmission piece connected to the shell, and meanwhile, the first connecting point is one connecting point of the moving contact connected to the transmission piece, so that the rotating connection of the transmission piece and the connection of the moving contact are realized through a simple revolute pair, the transmission structure is simplified, and meanwhile, the production cost is reduced.

In some embodiments, the second connection point includes a second stationary shaft and a second connection hole; the second fixed shaft is arranged on the transmission piece; the second connecting hole is formed in the movable contact, and is sleeved on the second fixed shaft, so that the movable contact is connected to the shell to form a second connecting point.

Through the scheme, the first connecting point and the second connecting point are arranged between the moving contact and the transmission piece, so that the moving contact is relatively fixed relative to the position of the transmission piece, and can stably rotate along with the transmission piece, the closing accuracy of the moving contact and the fixed contact is ensured, and the reliability of the isolating switch transmission device is improved; the hole shaft assembly between the second connecting hole and the second fixed shaft is used as a connecting mode of the second connecting point, so that the assembly is simple, the structure is simple, and the production cost is reduced to a certain extent.

In some embodiments, a tension spring is connected between the moving contact and the shell, and a connection point of the tension spring and the moving contact is located between the first connection hole and the second connection hole; when the opening state is switched to the closing state, the tension spring takes the second fixed shaft as an acting point to provide tension for the moving contact and promote the closing between the moving contact and the fixed contact; when the closed state is switched to the open state, the tension spring takes the first fixed shaft as an acting point to provide tension for the transmission piece and promote the disconnection between the moving contact and the fixed contact.

Through the scheme, the tension spring with the tension is arranged between the moving contact and the shell, and the moving contact is connected to the transmission piece through the first connecting hole and the second connecting hole, so that the tension of the tension spring can also act on the transmission piece; in addition, as the connection point of the tension spring and the movable contact is positioned between the first connection hole and the second connection hole, the tension force of the tension spring can be applied to the first fixed shaft or the second fixed shaft at will; when the tension force acts on the first fixed shaft, the tension spring can drive the transmission piece to rotate clockwise or anticlockwise; when the tension force acts on the second fixed shaft, the tension spring can drive the movable contact to rotate anticlockwise or clockwise; compared with a tension spring which can only realize unidirectional tension in the prior art, the tension spring in the embodiment of the application can promote the disconnection between the moving contact and the fixed contact and the closure between the moving contact and the fixed contact; meanwhile, compared with pure handle control, the two pulling forces provided by the tension spring quicken the opening and closing speed between the moving contact and the fixed contact, and structural optimization is achieved.

In some embodiments, the second connection hole is a kidney hole.

Through the scheme, the second connecting hole is set to be the waist-shaped hole, and when the moving contact is worn normally, the moving contact can move relative to the transmission piece through the waist-shaped hole, so that the worn moving contact can still contact with the fixed contact; and when the moving contact is worn and moved in the waist-shaped hole, a technician can judge the wear degree of the moving contact through the moving position of the moving contact, so that the moving contact with serious wear degree is replaced in time, the stability of connection between the moving contact and the fixed contact is ensured, and the reliability of the isolating switch transmission device is further optimized. The second connecting hole is set as a waist-shaped hole, which is a simple and effective implementation method for setting the second connecting point as a gap connection, and the waist-shaped hole is formed on the moving contact as a mature technology capable of being formed at one time, so that the production cost is further reduced.

In some embodiments, the handle comprises a base, a handle shaft, a cover plate, and a handle; the base is fixed on the shell; the handle rotating shaft is fixed on the base; the cover plate is sleeved on the handle rotating shaft, buckled on the base and forms a handle accommodating cavity with the base; the handle is connected to the cover plate and extends out of the shell.

Through the scheme, the handle extending out of the shell is arranged on the cover plate, so that a technician can conveniently rotate the handle.

In some embodiments, a torsion spring is disposed in the handle accommodating cavity, and the torsion spring is sleeved on the handle rotating shaft and rotates together with the cover plate.

Through above-mentioned scheme, be provided with torsion spring in the handle and hold the intracavity and can produce reverse rotation force when the apron rotates, more laborsaving when making the handle reset, play structure optimization's effect.

In some embodiments, the linkage structure is a connecting rod disposed between the transmission member and the cover plate, and the connecting rod drives the transmission member to rotate together with the handle.

Through above-mentioned scheme, when the handle rotates, the connecting rod of connecting between apron and driving medium drives the driving medium and rotates along with the handle, in numerous linkage structure, connecting rod simple structure has reduced manufacturing cost to a certain extent.

In some embodiments, a limiting structure is disposed between the transmission member and the handle, and is used for limiting the rotation range of the transmission member when the transmission member rotates towards the handle.

Through the scheme, the rotation amplitude of the transmission piece is limited in the most proper range, so that unnecessary installation space is prevented from being increased due to overlarge rotation amplitude of the transmission piece, the structure of the isolating switch transmission device is more compact, and the production cost is further reduced.

According to another aspect of the embodiments of the present application, there is provided a disconnecting switch, including any one of the above embodiments of the disconnecting switch transmission device and a top cover, where the top cover is fastened to the housing, so that the disconnecting switch transmission device is located in a containing cavity formed by the top cover and the housing.

According to the isolating switch, the isolating switch transmission device is arranged in the accommodating cavity formed by the top cover and the shell, so that the isolating switch has certain dustproof and anti-collision functions, and the service life of the isolating switch is prolonged.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present application can be more clearly understood, and the following detailed description of the present application will be presented in order to make the foregoing and other objects, features and advantages of the embodiments of the present application more understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of an embodiment of an isolating switch apparatus in an off state;

FIG. 2 is a schematic view of an embodiment of the present utility model showing the isolation switch in a closed position;

FIG. 3 is a schematic illustration of an embodiment of the isolating switch apparatus of the present application with the cover plate, handle, moving contact and connecting rod removed;

FIG. 4 is a schematic view of a handle according to an embodiment of the present application;

FIG. 5 is a schematic illustration of an isolating switch in an embodiment of the present application;

fig. 6 is an exploded view of fig. 5.

Reference numerals illustrate:

1-an isolating switch;

10-isolating switch transmission device, 11-shell, 12-handle, 121-base, 1211-limit step, 122-handle rotating shaft, 123-torsion spring, 124-cover plate, 125-handle, 13-transmission piece, 131-first fixed shaft, 132-second fixed shaft; 14-moving contact, 141-first connecting hole, 142-second connecting hole, 15-static contact, 16-linkage structure, 17-tension spring and 18-limit structure;

20-top cover.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the drawings are intended to cover, but not exclude, other matters. The word "a" or "an" does not exclude the presence of a plurality.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The directional terms appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the isolating switch transmission device and the isolating switch of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order, and may be used to improve one or more characteristics either explicitly or implicitly.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., the terms "connected" or "coupled" of a mechanical structure may refer to a physical connection, e.g., the physical connection may be a fixed connection, e.g., by a fastener, such as a screw, bolt, or other fastener; the physical connection may also be a detachable connection, such as a snap-fit or snap-fit connection; the physical connection may also be an integral connection, such as a welded, glued or integrally formed connection. "connected" or "connected" of circuit structures may refer to physical connection, electrical connection or signal connection, for example, direct connection, i.e. physical connection, or indirect connection through at least one element in the middle, so long as circuit communication is achieved, or internal communication between two elements; signal connection may refer to signal connection through a medium such as radio waves, in addition to signal connection through a circuit. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the isolating switch transmission device 10 provided in one aspect of the present application includes: the device comprises a shell 11, a handle 12, a linkage structure 16, a transmission piece 13, a moving contact 14 and a fixed contact 15. The handle 12 drives the transmission member 13 to rotate through the linkage structure 16, specifically, as shown in fig. 1 and 2, the linkage structure 16 is a connecting rod arranged between the transmission member 13 and the handle 12, and compared with other linkage structures, the connecting rod has a simple structure, so that the production cost and the assembly difficulty are greatly reduced.

In some embodiments of the present application, as shown in fig. 1 and 2, the transmission member 13 is rotatably coupled in the receiving chamber of the housing 11 by a first fixed shaft 131.

Further, the moving contact 14 is connected to the transmission member 13 through a first connection point (not shown) and a second connection point (not shown), as shown in fig. 1 and 2, a first connection hole 141 and a second connection hole 142 are provided on the moving contact 14, and a second fixed shaft 132 is provided on the transmission member 13; wherein, the first connecting hole 141 is sleeved on the first fixed shaft 131, and becomes a first connecting point between the moving contact 14 and the transmission member 13; the second connecting hole 142 is sleeved on the second fixed shaft 132, and becomes a second connecting point between the moving contact 14 and the transmission member 13.

The first connecting point is a connecting point of the transmission piece 13 connected to the shell 11, and is one of connecting points of the moving contact 14 connected to the transmission piece 13, so that the rotating connection of the transmission piece 13 and the connection of the moving contact 14 are realized by a simple revolute pair, the transmission structure is simplified, and meanwhile, the production cost is reduced.

The first connection point and the second connection point are arranged between the moving contact 14 and the transmission piece 13, so that the position of the moving contact 14 relative to the transmission piece 13 is relatively fixed, and the moving contact can stably rotate along with the transmission piece 13, thereby improving the reliability of the isolating switch transmission device 10; the hole shaft assembly between the second connecting hole 142 and the second fixing shaft 132 is used as a connection mode of the second connection point, so that the assembly is simple, the structure is simple, and the production cost is reduced to a certain extent.

In addition, as shown in fig. 1 and 2, the isolating switch transmission device 10 in the embodiment of the application only comprises one transmission piece 13 and one moving contact 14, so that the structure is simple, and the production cost is further reduced.

In some embodiments of the present application, the stationary contact 15 is connected to the housing 11 and is located on the rotation track of the moving contact 14. As shown in fig. 1 and 2, the fixed contact 15 is located at the left side of the moving contact 14, and the driving member 13 drives the moving contact 14 connected to the driving member 13 to rotate, i.e. the handle 12 indirectly drives the moving contact 14 to rotate. Because the fixed contact 15 is disposed on the rotation track of the moving contact 14, when the handle 12 drives the moving contact 14 to rotate clockwise, the moving contact 14 will approach the fixed contact 15 until touching the fixed contact 15, and at this time, the moving contact 14 and the fixed contact 15 are in a closed state.

When the distance between the moving contact 14 and the fixed contact 15 is not smaller than the shortest insulation distance, no current can flow between the moving contact 14 and the fixed contact 15, so the preset distance should be greater than or equal to the shortest insulation distance; therefore, when the handle 12 drives the moving contact 14 to rotate anticlockwise until reaching the preset distance, the moving contact 14 and the fixed contact 15 are in an off state.

Similarly, the fixed contact 15 may also be located on the right side of the moving contact 14, when the fixed contact 15 is located on the right side of the moving contact 14, and the moving contact 14 will approach the fixed contact 15 until touching the fixed contact 15, so as to reach a closed state when the moving contact 14 rotates anticlockwise; when the moving contact 14 rotates clockwise, the moving contact 14 will be away from the fixed contact 15 until reaching the preset distance, and the moving contact 14 and the fixed contact 15 are in an open state.

Since the movable contact 14 and the fixed contact 15 are contacted, abrasion of the movable contact 14 is caused, the rotation stroke of the movable contact 14 is increased, and the connection between the movable contact 14 and the fixed contact 15 becomes unstable. In some embodiments of the present application, the second connection point between the transmission member 13 and the moving contact 14 is set to be in gap connection, and the moving contact 14 moves in the gap in the second connection point, so that the rotation stroke of the moving contact 14 is prolonged, the moving contact 14 in the normal wear range can still stably touch the fixed contact 15, and the stability of the connection between the moving contact 14 and the fixed contact 15 is ensured; meanwhile, by observing the position of the moving contact 14 in the gap in the second connection point in the closed state, the abrasion degree of the moving contact 14 can be easily judged, so that a new moving contact 14 can be timely replaced to ensure continuous and stable connection between the moving contact 14 and the fixed contact 15. The problem that current cannot be stably and continuously passed between contacts of the isolating switch in a closed state due to incapability of judging the abrasion condition of the moving contact 14 in the related art is solved.

In some embodiments of the present application, the second connection hole 142 is a simple and effective implementation method of setting the second connection point to be a gap connection, and the waist-shaped hole is formed on the moving contact 14 as a mature technology that can be formed at one time, so that the production cost is further reduced.

Specifically, as shown in fig. 1 and 2, the second connecting hole 142 is configured as a waist-shaped hole, and when the moving contact 14 is worn normally, the moving contact 14 can move relative to the transmission member 13 through the waist-shaped hole, so that the worn moving contact 14 can still contact the fixed contact 15; and when the moving contact 14 is worn and moved in the waist-shaped hole, a technician can judge the wear degree of the moving contact 14 through the moving position of the moving contact 14, so that the moving contact 14 with serious wear degree is replaced in time, the stability of connection between the moving contact 14 and the fixed contact 15 is ensured, and the reliability of the isolating switch transmission device 10 is further optimized.

In some embodiments of the present application, as shown in fig. 1 and 2, a tension spring 17 is connected between the moving contact 14 and the housing 11, and a connection point of the tension spring 17 and the moving contact 14 is located between the first connection hole 141 and the second connection hole 142; when the switch from the open state to the closed state is made, the tension spring 17 takes the second fixed shaft 132 as a force point to provide tension for the moving contact 14 and promote the closing between the moving contact 14 and the fixed contact 15; when the closed state is switched to the open state, the tension spring 17 takes the first fixed shaft 131 as a force point to provide tension for the transmission member 13 and promote the disconnection between the moving contact 14 and the fixed contact 15.

Since the moving contact 14 is connected to the transmission member 13 through the first connecting hole 141 and the second connecting hole 142, the tension force generated by the tension spring 17 on the moving contact 14 can also act on the transmission member 13; also, since the connection point of the tension spring 17 and the movable contact 14 is located between the first connection hole 141 and the second connection hole 142, the tension of the tension spring 17 may be arbitrarily applied to the first fixed shaft 131 or the second fixed shaft 132.

As shown in fig. 1, the fixed contact 15 is located at the left side of the moving contact 14, and when a tensile force acts on the first fixed shaft 131, the tension spring 17 can cause the transmission member 13 to rotate counterclockwise, so as to promote disconnection between the moving contact 14 and the fixed contact 15; as shown in fig. 2, the fixed contact 15 is located at the left side of the moving contact 14, and when a tensile force acts on the second fixed shaft 132, the tension spring 17 may urge the moving contact 14 to rotate clockwise, thereby promoting the closing between the moving contact 14 and the fixed contact 15.

Compared with a tension spring which can only realize unidirectional tension in the prior art, the tension spring 17 in the embodiment of the application can promote the disconnection between the moving contact 14 and the fixed contact 15 and the closure between the moving contact 14 and the fixed contact 15; meanwhile, compared with the control of the pure handle 12, the opening and closing speed between the movable contact 14 and the fixed contact 15 is increased by the two pulling forces provided by the tension spring 17, and the structural optimization is realized.

In some embodiments of the present application, as shown in fig. 3 and 4, the handle 12 includes a base 121, a handle shaft 122, a cover 124, and a grip 125; the base 121 is fixed on the housing 11; the handle rotating shaft 122 is fixed on the base 121; the cover plate 124 is sleeved on the handle rotating shaft 122, buckled on the base 121 and forms a handle accommodating cavity with the base 121; the handle 125 is attached to the cover plate 124 and extends outside the housing 11.

The cover plate 124 is sleeved on the handle rotating shaft 122, and rotates by taking the handle rotating shaft 122 as a rotating shaft. The cover plate 124 is provided with a handle 125 extending outside the housing 11, so that a technician can conveniently rotate the cover plate 124 by rotating the handle 125.

Further, as shown in fig. 3 and 4, a torsion spring 123 is disposed in the handle accommodating cavity formed by the cover plate 124 and the base 121, and the torsion spring 123 is sleeved on the handle rotating shaft 122 and rotates together with the cover plate 124. According to the prior art, the torsion spring 123 includes two torsion arms, and when the two torsion arms are fixed to the other components and the other components rotate around the center of the torsion spring 123, the torsion spring 123 generates torque or rotational force, which has an action tendency to pull the other components back to the original position.

As shown in fig. 4, a limiting step 1211 for clamping the torsion spring 123 is provided on the base 121, when the cover plate 124 rotates clockwise, the torsion spring 123 rotates clockwise along with the cover plate 124 until the torsion arm on the left side of the torsion spring 123 is clamped on the limiting step 1211 of the base 121 and cannot rotate continuously, and the torsion spring 123 generates a counterclockwise rotation force relative to the cover plate 124, so that the cover plate 124 generates a tendency to reset counterclockwise; the resetting of the handle 12 is thereby made more labor-saving, thereby acting as a structural optimization.

In some embodiments of the present application, as shown in fig. 3, a limiting structure 18 is provided between the transmission member 13 and the handle 12. Through the setting of limit structure 18, can restrict the rotation range of driving medium 13 in the most suitable scope, prevent because the rotation range of driving medium 13 is too big and increase unnecessary installation space, make isolator transmission 10's structure compacter, further reduced manufacturing cost.

As shown in fig. 3, the limiting structure 18 is a protruding structure fixed on the housing 11, so that the transmission member 13 stops rotating when abutting against the protruding structure in the rotating process, and the limiting function is realized. In addition, in a plurality of limiting structures, the protruding structure is simple in structure and convenient to assemble, and production cost and labor cost are further reduced while the rotation amplitude of the rotating piece is limited.

As shown in fig. 5 and 6, the isolating switch 1 provided in the embodiment of another aspect of the present application includes a top cover 20 and the isolating switch transmission device 10 in any of the foregoing embodiments, where the top cover 20 is buckled on the housing 11.

Further, as shown in fig. 6, the isolating switch transmission device 10 is arranged in the accommodating cavity formed by the top cover 20 and the shell 11, so that the isolating switch 1 has certain dustproof and anti-collision functions, and the service life of the isolating switch 1 is prolonged.

In summary, the isolating switch transmission device 10 and the isolating switch 1 described above, the isolating switch transmission device 10 includes a housing 11, a handle 12, a linkage structure 16, a transmission member 13, a moving contact 14 and a fixed contact 15; the moving contact 14 is connected to the transmission member 13 through the first connection point and the second connection point, and the transmission member 13 is connected to the handle 12 through the linkage structure 16, so that the handle 12 can indirectly drive the moving contact 14 to rotate through the transmission member 13. Because the fixed contact 15 is arranged on the rotating track of the movable contact 14, when the handle 12 drives the movable contact 14 to rotate clockwise or anticlockwise, the movable contact 14 approaches the fixed contact 15 until touching the fixed contact 15, and the movable contact 14 and the fixed contact 15 are in a closed state; when the handle 12 drives the moving contact 14 to rotate anticlockwise or clockwise, the moving contact 14 will be far away from the fixed contact 15 until reaching the preset distance, and when the distance between the moving contact 14 and the fixed contact 15 is not smaller than the shortest insulation distance, the moving contact 14 and the fixed contact 15 are in an open state, so the preset distance should be greater than or equal to the shortest insulation distance.

Because of the contact between the moving contact 14 and the fixed contact 15, the abrasion of the moving contact 14 is caused, the rotation stroke of the moving contact 14 is increased, and the connection between the moving contact 14 and the fixed contact 15 becomes unstable; the second connection point between the transmission piece 13 and the moving contact 14 is set to be in gap connection, and the moving contact 14 moves in the gap in the second connection point, so that the rotating stroke of the moving contact 14 is prolonged, the moving contact 14 in a normal wear range can still touch the fixed contact 15 stably, and the stability of connection between the moving contact 14 and the fixed contact 15 is ensured; meanwhile, by observing the position of the moving contact 14 in the gap in the second connection point in the closed state, the abrasion degree of the moving contact 14 can be easily judged, so that a new moving contact 14 can be timely replaced to ensure continuous and stable connection between the moving contact 14 and the fixed contact 15. The problem that current cannot be stably and continuously passed between contacts of the isolating switch 1 in a closed state due to incapability of judging the abrasion condition of the moving contact 14 in the related art is solved.

Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the present application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. An isolating switch actuator, comprising: the device comprises a shell, a handle, a linkage structure, a transmission piece, a moving contact and a fixed contact;

the handle is rotationally connected to the shell;

the transmission piece is connected to the handle through a linkage structure and rotates together with the handle;

a first connecting point and a second connecting point are arranged between the moving contact and the transmission piece and are used for connecting the moving contact to the transmission piece and rotating together with the transmission piece;

the second connection point is in gap connection;

the fixed contact is connected to the shell and is positioned on the rotating track of the moving contact;

the moving contact rotates to the position of the fixed contact along the rotating track, and when the moving contact contacts with the fixed contact, the moving contact and the fixed contact are in a closed state;

when the moving contact leaves the position where the fixed contact is located and the distance between the moving contact and the fixed contact is a preset distance, the moving contact and the fixed contact are in an open state;

the preset distance is larger than or equal to the shortest insulation distance between the moving contact and the fixed contact.

2. The isolating switch actuator as in claim 1, wherein said first connection point comprises a first stationary shaft and a first connection aperture;

the first fixed shaft is arranged on the shell, and the transmission piece is rotationally connected to the shell through the first fixed shaft;

the first connecting hole is formed in the movable contact, and the first connecting hole is sleeved on the first fixed shaft, so that the movable contact is connected to the shell to form the first connecting point.

3. The isolating switch actuator as in claim 2, wherein said second connection point comprises a second stationary shaft and a second connection aperture;

the second fixed shaft is arranged on the transmission piece;

the second connecting hole is formed in the movable contact, and is sleeved on the second fixed shaft, so that the movable contact is connected to the shell to form a second connecting point.

4. The isolating switch transmission as in claim 3, wherein a tension spring is connected between said moving contact and said housing, a connection point of said tension spring to said moving contact being located between said first connection hole and said second connection hole;

when the opening state is switched to the closing state, the tension spring takes the second fixed shaft as an acting point to provide tension for the moving contact and promote the closing between the moving contact and the fixed contact;

when the closed state is switched to the open state, the tension spring takes the first fixed shaft as an acting point to provide tension for the transmission piece and promote the disconnection between the moving contact and the fixed contact.

5. A disconnector transmission according to claim 3 in which the second connection aperture is a kidney aperture.

6. The isolating switch actuator as in claim 1, wherein said handle comprises a base, a handle shaft, a cover plate, and a handle;

the base is fixed on the shell;

the handle rotating shaft is fixed on the base;

the cover plate is sleeved on the handle rotating shaft, buckled on the base and forms a handle accommodating cavity with the base;

the handle is connected to the cover plate and extends out of the shell.

7. The isolating switch actuator as in claim 6, wherein a torsion spring is disposed in said handle receiving cavity, said torsion spring being sleeved on said handle shaft and rotating with said cover plate.

8. The isolating switch actuator as in claim 6, wherein said linkage is a link disposed between said driving member and said cover plate, said link driving said driving member to rotate with said handle.

9. The isolating switch transmission device as in claim 1, wherein a limiting structure is provided between the transmission member and the handle for limiting the rotational amplitude of the transmission member when it is rotated in the direction of the handle.

10. A disconnector comprising a disconnector actuator according to any of claims 1-9 and a cover which is snap-fitted to said housing such that said disconnector actuator is located in a receiving cavity defined by said cover and said housing.