Isolating switch

Abstract

The utility model belongs to the technical field of high-voltage electrical equipment, and discloses an isolating switch, which comprises a frame, a transmission mechanism, a shear type switch assembly and a cover plate, the transmission mechanism comprises a first crank arm and a second crank arm which are rotatably arranged on the frame, and an elastic piece is arranged between the first crank arm and the second crank arm; the shear type switch assembly is connected with the first crank arm and the second crank arm. The cover plate is detachably arranged on the frame, and the elastic piece is located on the side, facing the frame, of the cover plate. Wherein the elastic piece enables the first crank arm and the second crank arm to have a trend of rotating towards each other, so that the shear type switch assembly can clamp the static contact. According to the isolating switch provided by the utility model, the elastic piece is shielded by the cover plate, the elastic piece is effectively prevented from being corroded and rusted, and the transmission mechanism is not completely shielded by the frame and the cover plate, so that the movement condition of the transmission mechanism is convenient to observe; in addition, the cover plate is detachably arranged on the frame, so that the transmission mechanism is convenient to maintain and debug.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a disconnector. Background Art

[0002] In recent years, with the rapid development of high-voltage power grids, users' performance requirements for various high-voltage equipment in the power system have gradually increased. Outdoor high-voltage AC disconnectors are high-voltage electrical equipment with the harshest working environment and the widest application range among various electrical equipment in the power system. Among them, the double-arm vertical telescopic outdoor high-voltage AC disconnector is widely used because of its small floor area and strong ice-breaking ability.

[0003] In related technologies, the transmission mechanism of the double-arm vertical telescopic outdoor high-voltage AC disconnector is generally arranged in a closed transmission box and an open transmission box. Among them, the movement of the transmission mechanism cannot be observed in the closed transmission box, and it is difficult to repair and debug. The elastic parts of the transmission mechanism in the open transmission box are easily corroded and rusted. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a disconnector, which is convenient for maintenance and debugging, convenient for observing the movement of the transmission mechanism, and the elastic parts are not easily corroded and rusted.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] Provide a disconnector, including:

[0007] A frame;

[0008] A transmission mechanism, including a first crank arm and a second crank arm rotatably arranged on the frame, and an elastic part is arranged between the first crank arm and the second crank arm;

[0009] A scissor switch assembly connected to both the first crank arm and the second crank arm;

[0010] Wherein, the elastic part makes the first crank arm and the second crank arm tend to rotate towards each other, so that the scissor switch assembly can clamp the static contact;

[0011] A cover plate detachably arranged on the frame, and the elastic part is located on the side of the cover plate facing the frame.

[0012] Optionally, the cover plate includes a top plate and two side plates. The two side plates are respectively arranged on opposite sides of the top plate, and a shielding groove is formed by enclosing between the top plate and the two side plates. When the scissor switch assembly clamps the static contact, the elastic part is located in the shielding groove.

[0013] Optionally, the frame includes a frame body and two first support plates disposed on the frame body. The two first support plates are respectively disposed on two opposite sides of the frame body. The transmission mechanism is disposed between the two first support plates, and the two first support plates are rotatably connected to both the first crank arm and the second crank arm. The two side plates are detachably connected to the two first support plates one by one.

[0014] Optionally, the first crank arm includes a first shaft and a first connecting plate disposed on the first shaft. The first shaft is rotatably connected to the frame, and the first connecting plate is connected to the first end of the elastic member.

[0015] The second crank arm includes a second shaft and a second connecting plate disposed on the second shaft. The second shaft is rotatably connected to the frame, and the second connecting plate is connected to the second end of the elastic member.

[0016] Optionally, the transmission mechanism further includes a first connecting rod. The first crank arm further includes a third connecting plate disposed on the first shaft, and the second crank arm further includes a fourth connecting plate disposed on the second shaft. The third connecting plate is hinged to the first end of the first connecting rod, and the fourth connecting plate is hinged to the second end of the first connecting rod.

[0017] Optionally, the scissor switch assembly includes two first conductive tubes and two second conductive tubes. One end of one of the two first conductive tubes is connected to the first crank arm, and one end of the other is connected to the second crank arm. The second ends of the two first conductive tubes are respectively and hingedly connected to the first ends of the two second conductive tubes, and the two second conductive tubes are hinged to each other. Touch plates are provided on the sides of the second ends of the two second conductive tubes facing each other.

[0018] Optionally, a stopper is provided on the touch plate, and the stopper is located at one end of the touch plate close to the second end of the second conductive tube.

[0019] Optionally, a first wiring board is provided on the first conductive tube, and a second wiring board corresponding to the first wiring board is provided on the frame. A first flexible connection is electrically connected between the opposite first wiring board and the second wiring board; and / or

[0020] A second flexible connection is electrically connected between the second end of the first conductive tube and the first end of the second conductive tube.

[0021] Optionally, the two second conductive tubes are hinged to each other through a hinge shaft. A support member is provided on the frame, and the cover plate is located between the frame and the support member. The support member can abut against the hinge shaft.

[0022] Optionally, the transmission mechanism further includes:

[0023] The first connecting rod, the first end of the first connecting rod is hinged to the first crank arm, and the second end of the first connecting rod is hinged to the second crank arm;

[0024] The second connecting rod, the first end of the second connecting rod is ball-hinged to the first crank arm;

[0025] The driving crank arm is rotatably arranged on the frame, and the driving crank arm is ball-hinged to the second end of the second connecting rod; wherein,

[0026] At least part of the area of the first connecting rod and at least part of the area of the second connecting rod are located on the side of the cover plate facing the frame.

[0027] Beneficial effects:

[0028] For the disconnector provided by the present utility model, the transmission mechanism acts on the first crank arm and the second crank arm through an elastic member, so that the scissor switch assembly can clamp the static contact, which is stable and reliable. Moreover, the elastic member is located on the side of the cover plate facing the frame, that is, the elastic member is shielded by the cover plate, effectively preventing the elastic member from being corroded and rusted. In addition, the frame and the cover plate do not completely shield the transmission mechanism, which is convenient for observing the movement of the transmission mechanism. Furthermore, the cover plate is detachably arranged on the frame, which is convenient for repairing and debugging the transmission mechanism. Description of the drawings

[0029] Figure 1 is a schematic structural diagram of the disconnector provided by the present utility model in the closed state;

[0030] Figure 2 is a schematic structural relationship diagram between the frame and the cover plate provided by the present utility model;

[0031] Figure 3 is a schematic structural relationship diagram between the frame and the transmission mechanism provided by the present utility model;

[0032] Figure 4 is a partial structural schematic diagram of the disconnector provided by the present utility model;

[0033] Figure 5 is a schematic structural diagram of the elastic member provided by the present utility model;

[0034] Figure 6 is a schematic structural diagram of one perspective of the disconnector provided by the present utility model in the open state;

[0035] Figure 7 is a partial structural schematic diagram of the scissor switch assembly provided by the present utility model;

[0036] Figure 8 is a schematic structural diagram of another perspective of the disconnector provided by the present utility model in the open state.

[0037] In the figure:

[0038] 100, frame; 110, housing; 120, first support plate; 121, first plate portion; 122, second plate portion; 130, second support plate; 140, second wiring board; 150, third wiring board;

[0039] 200, transmission mechanism; 210, first crank arm; 211, first shaft; 212, first connecting plate; 213, third connecting plate; 214, fifth connecting plate; 215, seventh connecting plate; 220, second crank arm; 221, second shaft; 222, second connecting plate; 223, fourth connecting plate; 224, eighth connecting plate; 230, elastic member; 231, spring body; 232, pull plate; 240, first connecting rod; 241, first rod; 242, first hinge joint; 243, second hinge joint; 250, second connecting rod; 251, second rod; 252, first spherical hinge bearing; 253, second spherical hinge bearing; 260, driving crank arm; 261, third shaft; 262, sixth connecting plate; 263, flange;

[0040] 300, scissor switch assembly; 310, first conductive tube; 320, second conductive tube; 330, contact plate; 340, stop block; 350, fifth screw member; 360, first wiring board; 370, hinge shaft; 380, fourth wiring board; 390, fifth wiring board;

[0041] 400, cover plate; 401, shielding groove; 410, top plate; 420, side plate; 421, folded edge; 422, first groove; 423, second groove;

[0042] 510, first flexible connection; 520, second flexible connection;

[0043] 600, support member. Detailed implementation manners

[0044] The following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model and are not intended to limit the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0045] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above and over", and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below and under", and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0047] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0048] Refer to Figures 1 to 3 As shown, this embodiment provides a disconnector, which includes a frame 100, a transmission mechanism 200, a scissor switch assembly 300, and a cover plate 400.

[0049] Specifically, the transmission mechanism 200 includes a first crank arm 210 and a second crank arm 220 rotatably arranged on the frame 100, and an elastic member 230 is arranged between the first crank arm 210 and the second crank arm 220; the scissor switch assembly 300 is connected to both the first crank arm 210 and the second crank arm 220; the cover plate 400 is detachably arranged on the frame 100, and the elastic member 230 is located on the side of the cover plate 400 facing the frame 100. Among them, the elastic member 230 makes the first crank arm 210 and the second crank arm 220 have a tendency to rotate towards each other, so that the scissor switch assembly 300 can clamp the static contact (not shown).

[0050] In this embodiment, the transmission mechanism 200 acts on the first crank arm 210 and the second crank arm 220 through the elastic member 230, so that the scissor switch assembly 300 can clamp the static contact, which is stable and reliable. Moreover, the elastic member 230 is located on the side of the cover plate 400 facing the frame 100, that is, the elastic member 230 is shielded by the cover plate 400, effectively preventing the elastic member 230 from being corroded and rusted. And the elastic member 230 does not need to adopt special anti-corrosion and anti-rust materials, saving costs. In addition, the frame 100 and the cover plate 400 do not completely shield the transmission mechanism 200, which is convenient for observing the movement of the transmission mechanism 200. Furthermore, the cover plate 400 is detachably arranged on the frame 100, which is convenient for repairing and debugging the transmission mechanism 200.

[0051] Specifically, the first crank arm 210 and the second crank arm 220 can be rotatably arranged on the frame 100 around the first direction, and the elastic member 230 can be located on the side of the cover plate 400 facing the frame 100 along the second direction. Wherein, the a direction in the figure is the first direction, the b direction is the second direction, the c direction is the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. Among them, the first direction can be the width direction of the disconnector, the second direction can be the height direction of the disconnector, and the third direction can be the length direction of the disconnector.

[0052] In this embodiment, continue to refer to Figures 1 to 3 As shown, the cover plate 400 includes a top plate 410 and two side plates 420. The two side plates 420 are respectively arranged on opposite sides of the top plate 410. A shielding groove 401 is formed by enclosing between the top plate 410 and the two side plates 420. When the scissor switch assembly 300 clamps the static contact, that is, when the disconnector is in the closed state, the elastic member 230 is located in the shielding groove 401 to form a good shielding effect on the elastic member 230, effectively preventing the elastic member 230 from being corroded and rusted. In this embodiment, when the scissor switch assembly 300 releases the static contact and the disconnector is in the open state, the elastic member 230 may protrude from the shielding groove 401 along the third direction or may be completely located in the shielding groove 401, which is not limited in this application.

[0053] Specifically, the two side plates 420 can be respectively arranged on both sides of the top plate 410 along the first direction.

[0054] Exemplarily, the cover plate 400 can be formed by bending sheet metal.

[0055] Exemplarily, the first crank arm 210 and the second crank arm 220 can be rotatably arranged on the frame 100 through bearings or sliding sleeves.

[0056] In this embodiment, refer to Figure 2 and Figure 4As shown, the frame 100 includes a frame body 110 and two first support plates 120 disposed on the frame body 110. The two first support plates 120 are respectively disposed on opposite sides of the frame body 110. A transmission mechanism 200 is provided between the two first support plates 120, and the two first support plates 120 are rotatably connected to both the first crank arm 210 and the second crank arm 220. Among them, the two first support plates 120 may be located inside the frame body 110. In this embodiment, the two ends of the first crank arm 210 and the two ends of the second crank arm 220 are supported by the two first support plates 120 to ensure the stability of the rotation of the first crank arm 210 and the second crank arm 220. In addition, the setting of the annular frame 100 facilitates observing the movement of the transmission mechanism 200.

[0057] Specifically, the two first support plates 120 may be respectively disposed on opposite sides of the frame body 110 along the first direction.

[0058] Exemplarily, the frame body 110 may be a rectangular frame, a circular ring frame, a hexagonal frame or an annular frame of other shapes.

[0059] Exemplarily, the two side plates 420 may be detachably connected to the two first support plates 120 in a one-to-one correspondence.

[0060] In a feasible implementation manner, for the convenience of disassembling the cover plate 400, a folded edge 421 is provided on the side of the side plate 420 away from the top plate 410 along the second direction. The first support plate 120 includes a first plate portion 121 and a second plate portion 122 disposed at an angle. The first plate portion 121 is rotatably connected to both the first crank arm 210 and the second crank arm 220. The second plate portion 122 abuts against the corresponding folded edge 421 to stably fix the cover plate 400 on the frame 100. Exemplarily, the cover plate 400 and the frame 100 are connected by a first connection assembly. The first connection assembly includes a first screw connector and a first screw sleeve. Specifically, the cover plate 400 and the frame 100 are stably and reliably connected by a manner in which a plurality of first screw connectors pass through the folded edge 421 and the second plate portion 122 and are threadedly connected to a plurality of first screw sleeves in a one-to-one correspondence. Among them, the first support plate 120 may be in an L shape.

[0061] Exemplarily, the first toggle arm 210 and the second toggle arm 220 may be arranged at intervals in the third direction. In this embodiment, on the first side of the side plate 420 in the third direction, a first groove 422 corresponding to the first toggle arm 210 may be provided, and on the second side of the side plate 420 in the third direction, a second groove 423 corresponding to the second toggle arm 220 may be provided. The first toggle arm 210 is inserted through the first groove 422, and the second toggle arm 220 is inserted through the second groove 423, so that the top plate 410 has a larger size in the third direction, enabling the cover plate 400 to better shield the elastic member 230, more effectively preventing the elastic member 230 from being corroded and rusted, and facilitating the disassembly and assembly of the cover plate 400 relative to the frame 100.

[0062] In this embodiment, referring to Figures 3 to 5 As shown, the transmission mechanism 200 further includes a first connecting rod 240, a second connecting rod 250, and a driving toggle arm 260. The first end of the first connecting rod 240 is hinged to the first toggle arm 210, and the second end of the first connecting rod 240 is hinged to the second toggle arm 220; the first end of the second connecting rod 250 is ball-hinged to the first toggle arm 210; the driving toggle arm 260 is rotatably arranged on the frame 100, and the driving toggle arm 260 is ball-hinged to the second end of the second connecting rod 250. In this embodiment, in the natural state of the transmission mechanism 200, under the action of the elastic member 230, the scissor switch assembly 300 can clamp the static contact to realize the closing of the disconnecting switch; by rotating the driving toggle arm 260, the second connecting rod 250 drives the first toggle arm 210 to rotate, and the first toggle arm 210 drives the second toggle arm 220 to rotate through the first connecting rod 240, that is, the first toggle arm 210 and the second toggle arm 220 rotate away from each other, so that the scissor switch assembly 300 disengages from the clamping of the static contact to realize the opening of the disconnecting switch, which is convenient for operation and ensures that the disconnecting switch occupies a small space.

[0063] Specifically, the driving toggle arm 260 may be rotatably arranged on the frame 100 around the second direction.

[0064] In a feasible implementation manner, at least part of the first connecting rod 240 and at least part of the second connecting rod 250 are located on the side of the cover plate 400 facing the frame 100, that is, inside the shielding groove 401, so as to form a shielding, effectively preventing the first connecting rod 240 and the second connecting rod 250 from being corroded and rusted.

[0065] Specifically, at least part of the first connecting rod 240 and at least part of the second connecting rod 250 are located on the side of the cover plate 400 facing the frame 100 along the second direction.

[0066] Specifically, the first toggle arm 210 includes a first shaft 211 and a first connecting plate 212 provided on the first shaft 211, and the second toggle arm 220 includes a second shaft 221 and a second connecting plate 222 provided on the second shaft 221. Among them, both the first shaft 211 and the second shaft 221 are rotatably connected to the frame 100, facilitating the rotational connection of the first toggle arm 210 and the second toggle arm 220 relative to the frame 100. Among them, the first connecting plate 212 is connected to the first end of the elastic member 230, and the second connecting plate 222 is connected to the second end of the elastic member 230, facilitating the connection between the first toggle arm 210 and the second toggle arm 220 and the elastic member 230.

[0067] Exemplarily, the elastic member 230 can be a spring, and the spring includes a spring body 231 and two tension plates 232 respectively provided at both ends of the spring body 231. Exemplarily, the elastic member 230 is connected to the first toggle arm 210 through a second connection assembly. The second connection assembly includes a second screw member and a second screw sleeve. Specifically, the elastic member 230 is connected to the first toggle arm 210 by passing the second screw member through one of the two tension plates 232 and the first connecting plate 212 and threadedly connecting with the second screw sleeve. Exemplarily, the elastic member 230 is connected to the second toggle arm 220 through a third connection assembly. The third connection assembly includes a third screw member and a third screw sleeve. Specifically, the elastic member 230 is connected to the second toggle arm 220 by passing the third screw member through the other of the two tension plates 232 and the second connecting plate 222 and threadedly connecting with the third screw sleeve, facilitating the disassembly, installation, and replacement of the elastic member 230.

[0068] Specifically, the first toggle arm 210 further includes a third connecting plate 213 provided on the first shaft 211, and the second toggle arm 220 further includes a fourth connecting plate 223 provided on the second shaft 221. The third connecting plate 213 is hinged to the first end of the first link 240, and the fourth connecting plate 223 is hinged to the second end of the first link 240. In this embodiment, through the arrangement of the third connecting plate 213 and the fourth connecting plate 223, the connection between the first toggle arm 210 and the second toggle arm 220 and the first link 240 is facilitated, and through the arrangement of the first link 240, the rotational directions of the first shaft 211 and the second shaft 221 can be opposite, so as to enable the drive mechanism 200 to drive the scissor switch assembly 300 to clamp or release the static contact. Among them, the axial direction refers to the axial directions of the first shaft 211 and the second shaft 221, that is, the first direction.

[0069] Exemplarily, the central connection line of the projections of the first shaft 211 and the second shaft 221 along the axial direction intersects with the projection of the first link 240 along the axial direction, so as to simplify the structure of the first link 240. For example, the first link 240 is in a straight rod shape, and it can ensure that the rotational directions of the first shaft 211 and the second shaft 221 are opposite.

[0070] Specifically, a fifth connecting plate 214 is further provided on the first shaft 211. The fifth connecting plate 214 is ball-jointed to the first end of the second connecting rod 250 to facilitate the connection between the first crank arm 210 and the second connecting rod 250.

[0071] Specifically, the active crank arm 260 includes a third shaft 261 and a sixth connecting plate 262 provided at the first end of the third shaft 261. The sixth connecting plate 262 is ball-jointed to the second end of the second connecting rod 250 to facilitate the connection between the active crank arm 260 and the second connecting rod 250.

[0072] Specifically, a flange 263 is provided at the second end of the third shaft 261 to facilitate driving the active crank arm 260 to rotate.

[0073] Specifically, the frame 100 further includes a second support plate 130. The second support plate 130 is provided between the two first support plates 120. The third shaft 261 is rotatably provided on the second support plate 130 around the second direction. Wherein, the second support plate 130 is lapped on the second plate portion 122 of the first support plate 120. Exemplarily, the second support plate 130 and the second plate portion 122 are connected by a fourth connection assembly. The fourth connection assembly includes a fourth screw and a fourth screw sleeve. Specifically, the second support plate 130 is fixed to the second plate portion 122 by passing the fourth screw through the second support plate 130 and the second plate portion 122 and threadedly connecting with the fourth screw sleeve, which is convenient for assembly.

[0074] In this embodiment, referring to Figure 4 As shown, the first connecting rod 240 includes a first rod 241, a first hinge head 242 provided at the first end of the first rod 241, and a second hinge head 243 provided at the second end of the first rod 241. Wherein, the first hinge head 242 is hinged to the first crank arm 210, that is, ball-jointed to the third connecting plate 213; the second hinge head 243 is hinged to the second crank arm 220, that is, ball-jointed to the fourth connecting plate 223, which is convenient for assembly.

[0075] Exemplarily, the first rod 241 is located on the side of the cover plate 400 facing the frame 100 along the second direction, that is, located in the shielding groove 401, so as to prevent the first rod 241 and the parts of the first rod 241 connected to the first hinge head 242 and the second hinge head 243 from rusting.

[0076] Exemplarily, both the first hinge head 242 and the second hinge head 243 are connected to the first rod 241 by threaded connection, and the thread rotation directions of the first hinge head 242 and the second hinge head 243 are opposite. It can be understood that the length of the first connecting rod 240 can be adjusted before assembly, and the length of the first connecting rod 240 is ensured to be constant after assembly to ensure that the rotation angles of the first crank arm 210 and the second crank arm 220 are equal.

[0077] In this embodiment, continue to refer toFigure 4 As shown, the second connecting rod 250 includes a second rod 251, a first spherical hinge bearing 252 provided at the first end of the second rod 251, and a second spherical hinge bearing 253 provided at the second end of the second rod 251. Among them, the first spherical hinge bearing 252 is hinged to the first crank arm 210, that is, ball-hinged to the fifth connecting plate 214; the second spherical hinge bearing 253 is hinged to the driving crank arm 260, that is, ball-hinged to the sixth connecting plate 262, which is convenient for assembly.

[0078] Exemplarily, there are two fifth connecting plates 214, and the first spherical hinge bearing 252 is provided between the two fifth connecting plates 214.

[0079] Exemplarily, the second rod 251 is located on the side of the cover plate 400 facing the frame 100 along the second direction, that is, located in the shielding groove 401, so as to prevent the second rod 251 and the parts where the second rod 251 is connected to the first spherical hinge bearing 252 and the second spherical hinge bearing 253 from rusting.

[0080] Exemplarily, both the first spherical hinge bearing 252 and the second spherical hinge bearing 253 are connected to the second rod 251 by means of threaded connection, and the thread directions of the first spherical hinge bearing 252 and the second spherical hinge bearing 253 are opposite. It can be understood that the length of the second connecting rod 250 can be adjusted before assembly, and the length of the second connecting rod 250 after assembly is ensured to be within a certain range, effectively preventing the occurrence of movement jamming.

[0081] In this embodiment, referring to Figure 1 、 Figure 4 、 Figure 6 and Figure 7 As shown, the scissor switch assembly 300 includes two first conductive tubes 310 and two second conductive tubes 320. One end of one of the two first conductive tubes 310 is connected to the first crank arm 210, and one end of the other is connected to the second crank arm 220. The second ends of the two first conductive tubes 310 are respectively and correspondingly hinged to the first ends of the two second conductive tubes 320, and the two second conductive tubes 320 are hinged to each other. Touch plates 330 are provided on the sides of the second ends of the two second conductive tubes 320 facing each other, and the two touch plates 330 are used to clamp the static contact. Among them, the projections of the two second conductive tubes 320 along the first direction are in an X shape. In this embodiment, when the first crank arm 210 and the second crank arm 220 rotate towards each other or away from each other, the second conductive tubes 320 can be driven by the first conductive tubes 310 to act, so that the touch plates 330 clamp or release the static contact, which is convenient for controlling the scissor switch assembly 300.

[0082] Exemplarily, the first conductive tube 310 and the second conductive tube 320 can be aluminum square tubes.

[0083] Exemplarily, the touch plate 330 can be an arc-shaped touch plate, such as a single-sided arc-shaped touch plate, that is, the surface in contact with the second conductive tube 320 is a plane, and the surface in contact with the static contact is an arc surface, so as to ensure that there is a large and uniform contact area between the touch plate 330 and the second conductive tube 320 and the static contact.

[0084] Exemplarily, the arc surface of the touch plate 330 is treated with a graphene silver plating process to increase the hardness, wear resistance and corrosion resistance of the touch plate 330 and improve the service life of the touch plate 330.

[0085] In a feasible implementation manner, a stop block 340 is provided on the touch plate 330. The stop block 340 is located at one end of the second end of the touch plate 330 close to the second conductive tube 320 to prevent the touch plates 330 from colliding with each other. Specifically, a connecting column is provided on the second conductive tube 320, and the connecting column passes through the touch plate 330 and is connected to the stop block 340. Among them, the connecting column and the stop block 340 can be connected by means of threaded fastening, or can be connected by welding or other means, which is not limited in this application.

[0086] Exemplarily, one end of the touch plate 330 far from the second end of the second conductive tube 320 can be fastened to the second conductive tube 320 by a fifth screw member 350, which is convenient for assembly.

[0087] Exemplarily, the first crank arm 210 further includes a seventh connecting plate 215 provided on the first shaft 211, and the second crank arm 220 further includes an eighth connecting plate 224 provided on the second shaft 221. One of the two first conductive tubes 310 is connected to the seventh connecting plate 215, and the other is connected to the eighth connecting plate 224, which is convenient for assembly.

[0088] In this embodiment, electric energy is sequentially conducted from the touch plate 330, the second conductive tube 320, the first conductive tube 310 and the frame 100 to an external device.

[0089] In a feasible implementation manner, as Figure 6 shown, to ensure the stable conduction of electric energy between the second conductive tube 320 and the frame 100 and prevent current from flowing through the transmission device, a first wiring board 360 is provided on the first conductive tube 310, and a second wiring board 140 corresponding to the first wiring board 360 one by one is provided on the frame 100. A first flexible connection 510 can be electrically connected between the opposite first wiring board 360 and the second wiring board 140. Among them, the second wiring board 140 is provided at a position of the frame body 110 close to the first wiring board 360. Exemplarily, the shapes of the first wiring board 360 and the second wiring board 140 can be L-shaped.

[0090] Specifically, a third wiring board 150 is further provided on the frame 100, and the third wiring board 150 is used for electrically connecting to an external device. Exemplarily, third wiring boards 150 are provided on both sides of the frame body 110 along the third direction. Exemplarily, the shape of the third wiring board 150 can be L-shaped.

[0091] In a feasible implementation manner, as Figure 6 shown, to ensure stable electrical energy conduction between the first conductive tube 310 and the second conductive tube 320 and prevent current from flowing through the hinge joint of the first conductive tube 310 and the second conductive tube 320, a second flexible connection 520 can be electrically connected between the second end of the first conductive tube 310 and the first end of the second conductive tube 320.

[0092] In this embodiment, referring to Figure 4 and Figure 8 shown, the two second conductive tubes 320 are hinged to each other through a hinge shaft 370. A support member 600 is provided on the frame 100. The cover plate 400 is located between the support member 600 and the frame 100. The support member 600 can abut against the hinge shaft 370 to form a limit and prevent position interference between the second conductive tube 320 and the cover plate 400. Specifically, the two ends of the support member 600 are respectively connected to the first plate portions 121 of the two first support plates 120 in a one-to-one correspondence.

[0093] Exemplarily, the disconnect switch can include two scissor switch assemblies 300 arranged at intervals along the first direction. The hinge shaft 370 passes through four second conductive tubes 320 to realize the hinging of the second conductive tubes 320 in the two scissor switch assemblies 300. When the hinge shaft 370 abuts against the support member 600, the situation that the hinge shaft 370 skews and disengages from the support member 600 can be effectively prevented.

[0094] Exemplarily, the support member 600 can be formed by bending sheet metal.

[0095] Specifically, two seventh connection plates 215 are provided on the first shaft 211, two eighth connection plates 224 are provided on the second shaft 221, and the two seventh connection plates 215 and the two eighth connection plates 224 are respectively connected to the four first conductive tubes 310 in a one-to-one correspondence. Among them, the first connection plate 212, the third connection plate 213, and the fifth connection plate 214 are located between the two seventh connection plates 215, and the second connection plate 222 and the fourth connection plate 223 are located between the two eighth connection plates 224.

[0096] Specifically, along the third direction, a fourth wiring board 380 is provided between the two first conductive tubes 310 on the same side, a fifth wiring board 390 is provided between the two second conductive tubes 320 on the same side, the first end of the second flexible connection 520 is electrically connected to the fourth wiring board 380 on the corresponding side, and the second end is electrically connected to the fifth wiring board 390 on the corresponding side.

[0097] It is understandable that for the connection methods not explicitly described in the text, common connection methods such as threaded connection, welding or bonding can be selected according to needs.

[0098] Obviously, the above-mentioned embodiments of the present utility model are merely examples given to clearly illustrate the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An isolating switch, characterized in that: include: Frame(100); The transmission mechanism (200) comprises a first crank arm (210) and a second crank arm (220) rotatably arranged on the frame (100), wherein an elastic member (230) is arranged between the first crank arm (210) and the second crank arm (220); A scissor switch assembly (300) connected to both the first crank arm (210) and the second crank arm (220); The elastic member (230) enables the first crank arm (210) and the second crank arm (220) to have a tendency to rotate toward each other, so that the scissor switch assembly (300) can clamp the static contact; The cover plate (400) is detachably mounted on the frame (100), and the elastic member (230) is located on a side of the cover plate (400) facing the frame (100).

2. The isolating switch according to claim 1, characterized in that: The cover plate (400) comprises a top plate (410) and two side plates (420), wherein the two side plates (420) are respectively arranged on two opposite sides of the top plate (410), and a shielding groove (401) is formed between the top plate (410) and the two side plates (420), and when the scissor switch assembly (300) clamps the static contact, the elastic member (230) is located in the shielding groove (401).

3. The isolating switch according to claim 2, characterized in that: The frame (100) comprises a frame body (110) and two first support plates (120) arranged on the frame body (110), the two first support plates (120) are respectively arranged on two opposite sides of the frame body (110), the transmission mechanism (200) is arranged between the two first support plates (120), and the two first support plates (120) are rotatably connected to the first crank arm (210) and the second crank arm (220), and the two side plates (420) are detachably connected to the two first support plates (120) in a one-to-one correspondence.

4. The isolating switch according to claim 1, characterized in that: The first crank arm (210) comprises a first shaft (211) and a first connecting plate (212) arranged on the first shaft (211), the first shaft (211) is rotatably connected to the frame (100), and the first connecting plate (212) is connected to the first end of the elastic member (230); The second crank arm (220) comprises a second shaft (221) and a second connecting plate (222) arranged on the second shaft (221), the second shaft (221) is rotatably connected to the frame (100), and the second connecting plate (222) is connected to the second end of the elastic member (230).

5. The isolating switch according to claim 4, characterized in that: The transmission mechanism (200) further includes a first connecting rod (240), the first crank arm (210) further includes a third connecting plate (213) arranged on the first shaft (211), the second crank arm (220) further includes a fourth connecting plate (223) arranged on the second shaft (221), the third connecting plate (213) is hinged to the first end of the first connecting rod (240), and the fourth connecting plate (223) is hinged to the second end of the first connecting rod (240).

6. The isolating switch according to claim 1, characterized in that: The scissor switch assembly (300) comprises two first conductive tubes (310) and two second conductive tubes (320), wherein the first end of one of the two first conductive tubes (310) is connected to the first crank arm (210), and the first end of the other of the two first conductive tubes (310) is connected to the second crank arm (220), the second ends of the two first conductive tubes (310) are hingedly connected to the first ends of the two second conductive tubes (320) in a one-to-one correspondence, and the two second conductive tubes (320) are hingedly connected to each other, and the second ends of the two second conductive tubes (320) are each provided with a touch plate (330) on one side facing each other.

7. The isolating switch according to claim 6, characterized in that: A stopper (340) is provided on the touch plate (330), and the stopper (340) is located at one end of the touch plate (330) close to the second end of the second conductive tube (320).

8. The isolating switch according to claim 6, characterized in that: The first conductive tube (310) is provided with a first wiring board (360), the frame (100) is provided with a second wiring board (140) corresponding to the first wiring board (360), and a first flexible connection (510) is electrically connected between the first wiring board (360) and the second wiring board (140); and / or A second flexible connection (520) is electrically connected between the second end of the first conductive tube (310) and the first end of the second conductive tube (320).

9. The isolating switch according to claim 6, characterized in that: The two second conductive tubes (320) are hinged to each other via a hinge shaft (370); a support member (600) is provided on the frame (100); the cover plate (400) is located between the frame (100) and the support member (600); and the support member (600) can abut against the hinge shaft (370).

10. The isolating switch according to any one of claims 1 to 9, characterized in that: The transmission mechanism (200) further comprises: A first connecting rod (240), wherein a first end of the first connecting rod (240) is hinged to the first crank arm (210), and a second end of the first connecting rod (240) is hinged to the second crank arm (220); A second connecting rod (250), wherein a first end of the second connecting rod (250) is ball-jointed to the first crank arm (210); The active crank arm (260) is rotatably mounted on the frame (100), and the active crank arm (260) is ball-jointed to the second end of the second connecting rod (250); wherein: At least a partial area of ​​the first connecting rod (240) and at least a partial area of ​​the second connecting rod (250) are located on a side of the cover plate (400) facing the frame (100).

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