Rotary contact assembly and isolating switch

Abstract

The rotary contact assembly comprises a moving contact, a supporting seat and a supporting cover, the supporting seat and the supporting cover are fixedly installed, the moving contact is installed between the supporting seat and the supporting cover, the moving contact comprises a first contact and a second contact which are oppositely arranged, and the two ends of the first contact and the two ends of the second contact are provided with clamping gaps used for clamping the static contact. The moving contact further comprises a contact support and elastic pieces, at least one elastic piece is arranged on the opposite faces of the first contact and / or the second contact, two grooves are formed in the opposite faces of the contact support, the two grooves are of a through structure in the length direction of the moving contact, and the middle of the first contact and the middle of the second contact of the moving contact are arranged in the two grooves respectively. A moving contact accommodating groove is arranged between the supporting seat and the supporting cover, a limiting structure matched with the contact support is arranged in the moving contact accommodating groove, the contact support, the first contact, the second contact and the at least one elastic piece are positioned between the supporting seat and the supporting cover and are clamped and limited by the supporting seat and the supporting cover, and the structural strength of the moving contact is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity, and particularly relates to a rotating contact assembly and a disconnector. Background Art

[0002] The disconnector has the functions of isolating the power supply and disconnecting the circuit. With the rapid development of the photovoltaic field, the disconnector has also been widely used. In recent years, higher and higher requirements have been put forward for the current-carrying capacity and temperature rise performance of the disconnector.

[0003] The disconnector includes switch contacts, and the switch contacts include moving contacts and static contacts. The disconnection and closing of the moving contacts and the static contacts are used to realize the disconnection and connection of the circuit.

[0004] The prior art provides a disconnector contact, which includes a moving contact and a supporting mechanism. The supporting mechanism includes a supporting seat and a supporting cover. The supporting seat and the supporting cover clamp the moving contact along the thickness direction of the moving contact, so that the moving contact and the supporting mechanism are connected as a whole.

[0005] However, in the prior art, the supporting seat and the supporting cover are fixed by clamping along the thickness direction of the moving contact, and loosening will occur, and the fixation is unreliable. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the defects of the prior art and provide a rotating contact assembly and a disconnector with higher structural strength.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] In a first aspect, the present application provides a rotating contact assembly, which includes a moving contact, a supporting seat and a supporting cover. The supporting seat and the supporting cover are fixedly connected. The moving contact is installed between the supporting seat and the supporting cover. The moving contact includes a first contact and a second contact arranged oppositely. Clamping gaps for clamping the static contact are provided at both ends of the first contact and the second contact.

[0009] The moving contact further includes a contact support and at least one elastic member. At least one elastic member is arranged on the opposite side of the first contact and / or the second contact. Two grooves are provided on the opposite sides of the contact support. The two grooves are through structures along the length direction of the moving contact. The middle parts of the first contact and the second contact of the moving contact are respectively placed in the two grooves. A moving contact receiving groove is provided between the supporting seat and the supporting cover. A limiting structure cooperating with the contact support is provided in the moving contact receiving groove. The contact support, the first contact, the second contact and at least one elastic member are located between the supporting seat and the supporting cover.

[0010] In a possible implementation manner, at least one hot melt post is provided on the support base or / and the support cover, and a hot melt hole matching with the hot melt post is provided on the support cover or / and the support base.

[0011] In a possible implementation manner, a moving contact accommodating groove is provided on the support base and / or the support cover, the limiting structure includes the side wall of the moving contact accommodating groove, and the contact support is placed in the moving contact accommodating groove and is in limiting cooperation with the side wall of the moving contact accommodating groove.

[0012] In a possible implementation manner, the support base and the support cover are disc-shaped structures with the same diameter, and there are two sliding grooves between the edges of the support base and the support cover. The two sliding grooves are respectively arranged on both sides in the width direction of the moving contact accommodating groove, and the two static contacts respectively extend into the two sliding grooves. The rotation trajectories corresponding to the support base and the support cover are inserted into or disconnected from the clamping gaps at both ends of the moving contact.

[0013] In a possible implementation manner, an isolation boss is provided between the sliding groove and the moving contact accommodating groove to isolate the sliding groove from the moving contact accommodating groove, and one ends of the two sliding grooves are respectively communicated with the two ends of the moving contact accommodating groove.

[0014] In a possible implementation manner, the isolation boss includes two support bosses provided on the support base. The two support bosses are respectively located between the two sliding grooves and the moving contact accommodating groove. At least one hot melt post is provided on the support boss of the support base, and a hot melt hole matching with the hot melt post is provided on the support cover.

[0015] In a possible implementation manner, an arc-shaped support post is respectively provided on one side of each of the two support bosses close to the moving contact accommodating groove. A first arc-shaped protrusion is arranged in the middle of the first contact and the second contact along the width direction of the moving contact. A second arc-shaped protrusion is correspondingly arranged in the middle of the contact support. The arc-shaped support post corresponds to the second arc-shaped protrusion in the middle of the contact support. An arc-shaped hole or an arc-shaped groove matching with the arc-shaped support post is provided on the support cover, and the arc-shaped support post penetrates into the arc-shaped hole or the arc-shaped groove to fix the support base and the support cover.

[0016] In a possible implementation manner, the two arc-shaped support posts can partially extend out of the outer surface of the support cover, and two second arc-shaped grooves corresponding to the arc-shaped support posts are provided at the bottom of the support base.

[0017] In a possible implementation manner, at least one elastic rib is further provided on the support base, and a first clamping groove or a first clamping hole corresponding to the elastic rib is provided on the support cover.

[0018] In a possible implementation manner, a main plug is provided in the middle of the outer surface of the support cover, and a first plug hole corresponding to the installation of the main plug is provided at the bottom of the support seat.

[0019] In a possible implementation manner, the support seat and the support cover are made of insulating gas-generating materials.

[0020] In a possible implementation manner, the moving contact further includes at least one fixed shaft, and at least one of the fixed shafts penetrates through the middle parts of the first contact, the second contact, the contact support, and the elastic member, and fixes the first contact, the second contact, the contact support, and the elastic member into a whole.

[0021] In a possible implementation manner, the contact support includes two side parts and a support part, the support part is located in the middle of the two side parts, and the two side parts are respectively perpendicular to the support part, and the support part is located between the first contact and the second contact.

[0022] In a possible implementation manner, the first contact and the second contact are of a flat plate structure, two sides of the support part are respectively attached to the first contact and the second contact, and the support part of the contact support forms the clamping gap at both ends of the first contact and the second contact.

[0023] In a possible implementation manner, the moving contact includes two elastic members, and the two elastic members are respectively placed on the opposite sides of the first contact and the second contact; or the moving contact includes one elastic member, and the one elastic member is placed on one side of the opposite side of the first contact or the second contact.

[0024] In a possible implementation manner, the elastic member is of a long plate-like structure, and first mounting parts are provided at both ends of the elastic member, and second mounting parts for cooperating with and limiting the first mounting parts are provided on the first contact and / or the second contact.

[0025] In a second aspect, the present application provides a disconnector, including an operating mechanism unit and at least one switch unit stacked, and the switch unit includes the above-mentioned rotary contact assembly.

[0026] The rotating contact component provided by the present application provides a clamping force for the clamping gaps at both ends of the moving contact by arranging elastic members on the moving contact. A contact support is arranged in the middle of the moving contact. The two opposite surfaces of the contact support have grooves, and the grooves are through structures along the length direction of the moving contact. The middle parts of the first contact and the second contact of the moving contact are respectively placed in the two grooves. The clamping gaps at both ends of the moving contact extend out of the grooves and are inserted and matched with the static contact. The contact support plays a good wrapping role for the moving contact, enhancing the structural strength of the moving contact. The support seat and the support cover are in limit cooperation with the contact support, and all three are made of insulating materials and are convenient to form an integral body. Compared with the prior art, the moving contact of the present application has better stability and higher structural strength.

[0027] Further, the hot melt column is installed in the hot melt hole after hot melting to realize the fixed connection between the support seat and the support cover. By the hot melting process, the hot melt column and the hot melt hole are integrated, which can reduce air leakage and increase the creepage distance. After the support seat and the support cover are installed and fixed, the cooperation between the hot melt column and the hot melt hole enhances the space tightness in the middle of the support seat and the support cover, making the gas generated by the arc burning the support seat and the support cover move towards both ends of the moving contact, thereby promoting the arc to move towards the arc extinguishing chamber and accelerating arc extinguishing.

[0028] Further, there are two sliding grooves between the support seat and the support cover. All or part of the static contact is placed in the sliding grooves. The rotation trajectories corresponding to the support seat and the support cover are inserted or disconnected from the clamping gaps at both ends of the moving contact. After the moving contact is installed between the support seat and the support cover, the sliding grooves can partially wrap the moving contact, which can further improve the insulation performance, and the arc can be guided into the arc extinguishing chamber through the sliding grooves.

[0029] Further, at least one elastic rib is arranged on the support seat, and a first clamping groove or a first clamping hole corresponding to the elastic rib is arranged on the support cover. When the elastic rib is installed in the first clamping groove or the first clamping hole, the elastic rib deforms to realize snap - type installation.

[0030] Further, the contact support is set as an "I" - shaped structure. The "I" - shaped contact support can wrap and protect the first contact and the second contact well, making the first contact and the second contact wrapped as an integral body in structure.

[0031] Further, by arranging third arc - shaped protrusions at the ends of the first contact and the second contact, the included angle between them can be made larger than the distance between the clamping gaps between the first contact and the second contact. In this way, it is more convenient for the moving contact to be inserted and matched with the static contact.

[0032] Furthermore, the support base and the support cover are made of insulating gas-generating materials. When the moving contact and the static contact come into contact or separate, an arc is generated. The support base and the support cover generate gas under the high-temperature erosion of the arc to cool the arc. At the same time, the generated gas will also push the arc towards the arc extinguishing chamber, thereby accelerating arc extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 and Figure 2 FIG. is a schematic structural view of the rotating contact assembly of the present utility model;

[0034] Figure 3 FIG. is a schematic structural view of the moving contact after disassembly of the present utility model;

[0035] Figure 4 FIG. is a schematic structural view of the fixed shaft of the present utility model;

[0036] Figure 5 FIG. is a schematic structural view of the contact support of the present utility model;

[0037] Figure 6 FIG. is a schematic structural view of the front of the moving contact of the present utility model;

[0038] Figure 7 FIG. is a schematic structural view of the back of the moving contact of the present utility model;

[0039] The reference numerals in the drawings include: support base 7; support cover 8; first contact 1; second contact 2; contact support 3; elastic member 5; groove 31; moving contact receiving groove 9; hot melt column 71; hot melt hole 81; first arc-shaped protrusion 61; second arc-shaped protrusion 62; first linkage structure 72; second linkage structure 82; weight reduction hole 78; sliding groove 73; support boss 75; main plug 84; groove 841; elastic rib 74; fixed shaft 4; first limiting portion 41; second limiting portion 42; first mounting hole 43; side portion 32; support portion 33; limiting boss 34; first mounting portion 51; second mounting portion 52; third arc-shaped protrusion 63; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following embodiments given in conjunction with the drawings further illustrate the specific embodiments of the present utility model. The protection scope of the present utility model is not limited to the description of the following embodiments.

[0041] The disconnecting switch includes an operating mechanism unit and at least one switch unit arranged in a stacked manner. The switch unit includes a housing and a switch contact and an arc extinguishing mechanism inside. The switch contact includes a rotating contact assembly and two static contacts. The rotating contact assembly includes a moving contact. The two static contacts are fixedly installed in the housing, and the rotating contact assembly is rotatably installed in the housing. The moving contact is in the shape of a long plate, with clamping gaps at both ends. The moving contact is clamped and connected to the two static contacts through the clamping gaps at both ends. The output shaft of the operating mechanism unit is connected to the rotating contact assembly for driving the rotating contact assembly to rotate and driving the moving contact to rotate and cooperate with the two static contacts. When the moving contact rotates to a certain angle, its two ends can contact and close with the two static contacts to realize the conduction of the circuit. When the moving contact rotates again, it can disconnect from the two static contacts to realize the interruption of the circuit. The disconnecting switch is usually connected in series in the circuit, and the conduction and interruption of the circuit are controlled by the connection and disconnection of the moving contact and the two static contacts.

[0042] As Figure 1 , Figure 2 and Figure 3 shown, the present application provides a rotating contact assembly. The rotating contact assembly rotates around its own axis and includes a moving contact, a support base 7 and a support cover 8. The support base 7 and the support cover 8 are fixedly connected, and the moving contact is installed between the support base 7 and the support cover 8. The moving contact includes a first contact 1 and a second contact 2 arranged oppositely. The first contact 1 and the second contact 2 have clamping gaps at both ends for clamping the static contact. The moving contact further includes a contact support 3 and at least one elastic member 5.

[0043] At least one elastic member 5 is arranged on the opposite surfaces of the first contact 1 and / or the second contact 2. Two grooves 31 are arranged on the two opposite surfaces of the contact support 3. The two grooves 31 are through structures along the length direction of the moving contact. The middle parts of the first contact 1 and the second contact 2 of the moving contact are respectively placed in the two grooves 31. There is a moving contact receiving groove 9 between the support base 7 and the support cover 8. The moving contact receiving groove 9 is provided with a limiting structure cooperating with the contact support 3. The contact support 3, the first contact 1, the second contact 2 and at least one of the elastic members 5 are located between the support base 7 and the support cover 8 and are clamped and limited by them.

[0044] The rotating contact component of the present application provides a clamping force for the clamping gaps at both ends of the moving contact by arranging an elastic member 5 on the moving contact. By arranging a contact support 3 in the middle of the moving contact, the two opposite sides of the contact support 3 have grooves 31, and the grooves 31 are through structures along the length direction of the moving contact. The middle parts of the first contact 1 and the second contact 2 of the moving contact are respectively placed in the two grooves 31, and the clamping gaps at both ends of the moving contact extend out of the grooves and are inserted and matched with the static contact. The contact support 3 plays a good role in wrapping the moving contact, enhancing the structural strength of the moving contact. The support seat 7 and the support cover 8 are in limit cooperation with the contact support 3, and all three are made of insulating materials and are convenient to form an integral body. Compared with the prior art, the moving contact of the present application has better stability and higher structural strength.

[0045] Preferably, as Figure 2 shown, at least one hot melt post 71 is arranged on the support seat 7 or / and the support cover 8, and a hot melt hole 81 matched with the hot melt post 71 is arranged on the support cover 8 or / and the support seat 7.

[0046] Further, the support seat 7 and the support cover 8 respectively include two hot melt posts 71 and two hot melt holes 81, and the two hot melt posts 71 and the two hot melt holes 81 are respectively arranged in the middle parts of the support seat 7 and the support cover 8. After the support seat 7, the support cover 8 and the contact support 3 are installed, the two hot melt posts 71 on the support seat 7 are respectively located on both sides of the contact support 3.

[0047] The hot melt post 71 is installed in the hot melt hole 81 after being hot melted to realize the fixed connection between the support seat 7 and the support cover 8. The hot melt post 71 and the hot melt hole 81 are fused into one body through the hot melt process, with reliable fixation, and can reduce air leakage and increase the creepage distance. When the support seat 7 and the support cover 8 are installed and fixed, the cooperation of the hot melt post 71 and the hot melt hole 81 enhances the space tightness in the middle parts of the support seat 7 and the support cover 8, so that the gas generated by the arc burning the support seat 7 and the support cover 8 moves towards both ends of the moving contact, thereby promoting the arc to move towards the arc extinguishing chamber and accelerating arc extinguishing. Of course, as other embodiments, the support seat 7 and the support cover 8 can also be fixed by other means such as screws, but their tightness is worse than that of the hot melt fixation of the hot melt post 71 and the hot melt hole 81.

[0048] Among them, the hot melt process is a method for assembling plastic parts with plastic parts or other parts, such as metal parts, printed circuit boards, etc. Its principle is as follows: there are local protrusions called hot melt posts on the plastic parts, and corresponding holes on the parts to be assembled. The hot melt posts pass through the holes, and are melted and then reshaped by heating, so as to fasten another part. According to different heating methods, hot melt can be divided into hot air hot melt and pulse hot melt. The hot air hot melt generates hot air through a hot air blower. The hot air softens the reserved hot melt posts, ribs, and stiffeners on the plastic. A cold welding head applies pressure to the plastic to reshape it, and then cools it to form a permanent fixation to another part. The pulse hot melt uses a transformer to generate a large current with a low voltage. The welding head is made to heat up rapidly, and the hot welding head heats the plastic to soften it, applies pressure to reshape it, and then cools the plastic below the glass transition temperature through cold air, so as to form a permanent fixation to another part.

[0049] The hot melt process has the advantages of simple structure, no need for additional fastening components, good sealing performance after fixation, and not easy to leak air. The hot melt processing process has no vibration, no pollution, no noise, and is environmentally friendly, energy-saving, fast, and efficient.

[0050] Further, as Figure 3 shown, in order to enhance the structural strength of the moving contact, a first arc-shaped protrusion 61 is arranged in the middle of the first contact 1 and the second contact 2 along the width direction of the moving contact, and a second arc-shaped protrusion 62 is correspondingly arranged in the middle of the contact support 3.

[0051] Preferably, as Figure 2 shown, a first linkage structure 72 is arranged on the support base 7, and a second linkage structure 82 that is cooperatively installed with the first linkage structure 72 is arranged on the support cover 8. Further, the first linkage structure 72 and the second linkage structure 82 are arranged in the middle of the support base 7 and the support cover 8.

[0052] As Figure 2As shown, a moving contact accommodating groove 9 is provided on the support base 7 and / or the support cover 8. The limiting structure includes the side wall of the moving contact accommodating groove 9. The contact support 3 is placed in the moving contact accommodating groove 9 and is in limiting cooperation with the side wall of the moving contact accommodating groove 9. The first linkage structure 72 includes two arc-shaped support columns oppositely arranged along the width direction of the moving contact. After the support base 7, the support cover 8 and the contact support 3 are installed, the two arc-shaped support columns are located on both sides of the contact support 3. The two arc-shaped support columns extend along the thickness direction of the moving contact. The arc-shaped support columns correspond to the second arc-shaped protrusion 62 in the middle of the contact support 3. When the contact support 3 is installed between the support base 7 and the support cover 8, the arc-shaped support columns cooperate with the second arc-shaped protrusion 62 to limit the interference fit between the support base 7 and the contact support 3. The arc-shaped support columns also form a part of the side wall of the moving contact accommodating groove 9. The second linkage structure 82 includes an arc-shaped hole or an arc-shaped groove that cooperates with the arc-shaped support columns. The arc-shaped support columns penetrate into the arc-shaped hole or the arc-shaped groove to fix the installation of the support base 7 and the support cover 8.

[0053] Preferably, as Figure 2 shown, the support base 7 and the support cover 8 are disc-shaped structures with the same diameter. A plurality of weight-reducing holes 78 are provided on the support base 7 and the support cover 8 to reduce the weight of the support base 7 and the support cover 8. Preferably, the weight-reducing holes 78 are arranged at positions outside the first linkage structure 72 and the second linkage structure 82 and away from the centers of the support base 7 and the support cover 8. Obviously, the first linkage structure 72 and the second linkage structure 82 can also adopt other structures to achieve limiting cooperation.

[0054] The support base 7 and the support cover 8 are made of insulating gas-generating materials. When the moving contact and the static contact come into contact or separate instantaneously, an arc is generated. The support base 7 and the support cover 8 generate gas under the high-temperature erosion of the arc to cool the arc. At the same time, the generated gas will also push the arc towards the arc extinguishing chamber, thereby accelerating arc extinguishing.

[0055] Preferably, as Figure 1As shown, the maximum length of the moving contact in its length direction is less than or equal to the diameters of the support base 7 and the support cover 8. There are two sliding grooves 73 between the edges of the support base 7 and the support cover 8. The two sliding grooves 73 are respectively arranged on both sides in the width direction of the moving contact receiving groove 9. An isolation boss is provided between the sliding groove 73 and the moving contact receiving groove 9 to isolate the sliding groove 73 from the moving contact receiving groove 9, improving the insulation performance and avoiding arc erosion of the moving contact. Only one end of each of the two sliding grooves 73 communicates with both ends of the moving contact receiving groove 9 respectively, so that the static contacts extending into the sliding grooves 73 can cooperate with the clamping gaps at both ends of the moving contact. Two static contacts extend into the two sliding grooves 73 respectively, and all or part of the static contacts are placed in the sliding grooves 73. The rotation trajectories of the corresponding support base 7 and support cover 8 are inserted or disconnected from the clamping gaps at both ends of the moving contact. After the moving contact is installed between the support base 7 and the support cover 8, both ends of the moving contact will not protrude from the support base 7 and the support cover 8, which can further improve the insulation performance. Moreover, the arc can be guided into the arc extinguishing chamber through the sliding groove 73. Of course, part of the moving contact can also protrude from the support base 7 and the support cover 8, and this also belongs to the protection scope of this application.

[0056] Of course, in other embodiments, the length of the moving contact can also be longer than the diameters of the support base 7 and the support cover 8, that is, after the moving contact is installed between the support base 7 and the support cover 8, both ends of the moving contact can protrude from the support base 7 and the support cover 8, and the static contact and the moving contact are inserted and matched outside the support base 7 and the support cover 8, and these all belong to the protection scope of this application.

[0057] Preferably, as Figure 2 shown, the isolation boss includes a support boss 75. There are two support bosses 75 arranged between the two sliding grooves 73 and the moving contact receiving groove 9. The two support bosses 75 form the two sliding grooves 73 after the support base 7 and the support cover 8 are installed, and the support boss 75 isolates the moving contact receiving groove 9 from the sliding groove 73. One end of each of the two sliding grooves 73 communicates with both ends of the moving contact receiving groove 9 respectively.

[0058] Furthermore, the two support bosses 75 can be arranged on the support base 7 or on the support cover 8; or the support bosses 75 are arranged on both the support base 7 and the support cover 8 at the same time, and the support bosses 75 on the support base 7 and the support bosses 75 on the support cover 8 are correspondingly arranged in the thickness direction of the moving contact. At this time, the support base 7 includes the two support bosses 75, and the support cover 8 includes the two support bosses 75.

[0059] Preferably, as Figure 2As shown, two arc-shaped support columns are respectively arranged on the two support bosses 75, and two hot melt columns 71 are respectively arranged on the two support bosses 75. After the support base 7 and the support cover 8 are installed, the two arc-shaped support columns can partially protrude from the outer surface of the support cover 8. The bottom of the support base 7 is provided with two second arc-shaped grooves corresponding to the arc-shaped support columns, and the protruding parts of the two arc-shaped support columns can be embedded in the second arc-shaped grooves for connecting with the support base 7 of the rotating contact assembly of the adjacent switch unit.

[0060] Preferably, as Figure 1 and Figure 2 shown, a main plug 84 is arranged in the middle of the outer surface of the support cover 8. The main plug 84 is located above the moving contact accommodation groove 9 corresponding to the moving contact accommodation groove 9. The main plug 84 partially protrudes from the upper surface of the support cover 8. The bottom of the support base 7 is provided with a first plug hole, and the protruding part of the main plug 84 can be embedded in the first plug hole for connecting with the support base 7 of the rotating contact assembly of the adjacent switch unit.

[0061] Further, a plurality of grooves 841 extending in the thickness direction of the moving contact are arranged on both sides of the main plug 84. The cross-sections of the plurality of grooves 841 form a structure similar to a fishbone shape. The first plug hole is provided with structural features matching the grooves 841 of the main plug 84. Arranging a plurality of grooves 841 on the main plug 84 can increase the friction between the main plug 84 and the first plug hole, making the installation of the plurality of rotating contact assemblies stacked in the thickness direction of the moving contact more firm.

[0062] In a possible implementation manner, the support cover 8 is further provided with a second plug hole at the position of the main plug 84, and the main plug 84 can be inserted into the second plug hole along the thickness direction of the moving contact;

[0063] In another possible implementation manner, the support cover 8 is not provided with a second plug hole, and the main plug 84 is integrally formed with the support cover 8.

[0064] When the operating mechanism unit of the disconnecting switch and a plurality of switch units are stacked, the rotating contact assemblies of the adjacent switch units are stacked and inserted along the thickness direction of the moving contact to form a whole. The output shaft of the operating mechanism unit is connected to the rotating contact assembly to realize the linkage operation of the plurality of rotating contact assemblies.

[0065] When applying a plurality of the rotating contact assemblies, the plurality of rotating contact assemblies can be installed through the cooperation of the protruding part of the main plug 84 on the support cover 8 of one rotating contact assembly and the first plug hole at the bottom of the support base 7 of another rotating contact assembly, and the cooperation between the protruding part of the arc-shaped support column on the support base 7 of one rotating contact assembly and the second arc-shaped groove at the bottom of the support base 7 of another rotating contact assembly.

[0066] When the rotating contact component of the present application is applied to a three-phase four-wire scenario, four sets of rotating contact components can be stacked and installed as a whole, and the four sets of rotating contact components are respectively connected to the A phase, B phase, C phase, and N phase of the circuit; when applied to the connection of electrical equipment at the power consumption end, one set of rotating contact components can be connected to one electrical equipment, and the number of rotating contact components can be selected according to actual needs in this application scenario.

[0067] It should be noted that when the rotating contact component of the present application is not applied to the scenario of multiple rotating contact components being superimposed and used, the protruding part of the arc-shaped support column of the rotating contact component does not extend out of the support cover 8, and the main plug 84 does not extend out of the support cover 8 either. Similarly, the bottom of the support seat 7 does not have a second arc-shaped groove and a first plug hole.

[0068] Further, as Figure 2 shown, at least one elastic rib 74 is further provided on the support seat 7, and a first card slot or a first card hole corresponding to the elastic rib 74 is provided on the support cover 8. When the elastic rib 74 is installed in the first card slot or the first card hole, the elastic rib 74 deforms to achieve snap-in installation.

[0069] In the application, two elastic ribs 74 are provided on the support seat 7, and a first card slot or a first card hole corresponding thereto is provided on the support cover 8. The two elastic ribs 74 are arranged on the sides of both ends of the moving contact accommodating groove 9, and the two elastic ribs 74 are symmetrically centered on the rotation axis center of the rotating contact component.

[0070] It should be noted that obviously, the support seat 7 and the support cover 8 are relatively installed, and the structures thereon can be interchanged according to specific circumstances.

[0071] Preferably, as Figure 3 shown, the moving contact further includes at least one fixed shaft 4, and at least one of the fixed shafts 4 penetrates through the middle parts of the first contact 1, the second contact 2, the contact support 3, and the elastic member 5 to fix the first contact 1, the second contact 2, the contact support 3, and the elastic member 5 as a whole. Of course, as other embodiments, the moving contact can also be limited and fixed only by the support seat 7 and the support cover 8 without setting the fixed shaft 4.

[0072] Further, as Figure 4 shown, the moving contact includes a fixed shaft 4, and a first limiting portion 41 is provided at one end of the fixed shaft 4, and a second limiting portion 42 is provided at the other end.

[0073] Further, as Figure 3As shown, when the moving contact includes an elastic member 5, the first limiting portion 41 of the fixed shaft 4 may be a disc with a diameter larger than the cross-sectional diameter of the fixed shaft 4. The disc is arranged at one end of the fixed shaft 4 and is integrally formed with the fixed shaft 4. Alternatively, the first limiting portion 41 may be a plurality of bosses extending around one end of the fixed shaft 4. The extending direction of the bosses is perpendicular to the installation direction of the fixed shaft 4. The bosses are integrally formed with the fixed shaft 4. The first limiting portion 41 at one end of the fixed shaft 4 abuts against the elastic member 5. In this embodiment, the second limiting portion 42 is a cylinder with a diameter smaller than that of the fixed shaft 4 and is integrally formed with the fixed shaft 4. A first mounting hole 43 or a second clamping groove for cooperating with the second limiting portion 42 is provided on the first contact 1 or the second contact 2. The second limiting portion 42 is riveted or welded to the first mounting hole 43 or the second clamping groove of the first contact 1 or the second contact 2. Alternatively, the second limiting portion 42 may also be a second mounting hole penetrating one end and a second mounting shaft cooperating with the second mounting hole. The second mounting shaft is installed in the second mounting hole. The length of the second mounting shaft is greater than the length of the second mounting hole. The second mounting shaft passes through the two ends of the second mounting hole and partially protrudes to abut against the first contact 1 or the second contact 2. The penetrating direction of the second mounting hole is perpendicular to the installation direction of the fixed shaft 4.

[0074] Alternatively, when the moving contact includes one or two elastic members 5, both the first limiting portion 41 and the second limiting portion 42 are a second mounting hole penetrating one end and a second mounting shaft cooperating with the second mounting hole. The length of the second mounting shaft is greater than the length of the second mounting hole. The second mounting shaft passes through the two ends of the second mounting hole and partially protrudes to abut against the first contact 1 and the second contact 2. The penetrating direction of the second mounting hole is perpendicular to the installation direction of the fixed shaft 4. Alternatively, the second limiting portion 42 is an annular clamping groove at the end of the fixed shaft 4 and a retaining ring sleeved on the clamping groove. After the second limiting portion 42 penetrates through the first contact 1, the second contact 2, the contact support 3, and the elastic member 5, the retaining ring is sleeved on the annular clamping groove. Obviously, according to the number and shape (rod-shaped or sheet-shaped) of the elastic members 5, there can be various selections and combinations for the structures of the first limiting portion 41 and the second limiting portion 42, which will not be elaborated here. All of these belong to the protection scope of this application.

[0075] In other embodiments, the moving contact may also include a plurality of the fixed shafts 4, which will not be elaborated here.

[0076] Preferably, as Figure 5As shown, the cross-section of the contact support 3 is an "I"-shaped structure, including two side parts 32 and a support part 33. The support part 33 is located in the middle of the two side parts 32, and the two side parts 32 are respectively perpendicular to the support part 33. The support part 33 is located between the first contact 1 and the second contact 2. The "I"-shaped contact support 3 can better wrap and protect the first contact 1 and the second contact 2, so that the first contact 1 and the second contact 2 are wrapped as a whole in structure.

[0077] Preferably, the first contact 1 and the second contact 2 are flat plate structures. Two sides of the support part 33 are respectively attached to the first contact 1 and the second contact 2. The support part 33 of the contact support 3 forms the clamping gap at both ends of the first contact 1 and the second contact 2. The distance of the clamping gap is the same as the thickness of the support part 33.

[0078] Furthermore, the first contact 1 and the second contact 2 may not be absolutely flat plate structures. Both ends of the first contact 1 and the second contact 2 may have bending structures. The bending part of the first contact 1 relative to the second contact 2 is parallel to the bending part of the second contact 2 relative to the first contact 1, and both ends of the first contact 1 bend towards both ends of the second contact 2 and / or both ends of the second contact 2 bend towards both ends of the first contact 1, which can make the clamping gap at both ends of the first contact 1 and the second contact 2 smaller. Both ends of the first contact 1 bend away from both ends of the second contact 2 and / or both ends of the second contact 2 bend away from both ends of the first contact 1, which can make the clamping gap at both ends of the first contact 1 and the second contact 2 larger. By setting bending parts at both ends of the first contact 1 and the second contact 2, the size of the clamping gap at both ends of the first contact 1 and the second contact 2 can be changed, so as to match static contacts with different thicknesses.

[0079] Preferably, a plurality of limiting bosses 34 with the same height are arranged on two sides of the support part 33 of the contact support 3. The limiting bosses 34 can increase the clamping gap at both ends of the first contact 1 and the second contact 2 to match the thickness of the static contact.

[0080] Preferably, the moving contact includes two elastic members 5, and the two elastic members 5 are respectively placed on two opposite sides of the first contact 1 and the second contact 2; or the moving contact includes one elastic member 5, and the one elastic member 5 is placed on one side of the opposite side of the first contact 1 or the second contact 2.

[0081] Preferably, as Figure 3As shown, the elastic member 5 is in the shape of a long plate, and both ends of the elastic member 5 are provided with first mounting portions 51, and second mounting portions 52 for cooperating with and limiting the first mounting portions 51 are provided on the first contact 1 and / or the second contact 2. By providing the first mounting portions 51 and the second mounting portions 52, the elastic member 5 is limited on the first contact 1 and / or the second contact 2.

[0082] Furthermore, the first mounting portions 51 are convex portions at both ends of the elastic member 5. The convex portions can be convex platforms or chamfers formed by bending both ends of the elastic member 5. The second mounting portions 52 are third card slots or third card holes on the first contact 1 and / or the second contact 2. Alternatively, the first mounting portions 51 can be convex platforms, and the second mounting portions 52 are third card slots or third card holes at both ends of the elastic member 5. In other embodiments, the elastic member 5 can also be in the shape of a rod, and all these belong to the protection scope of the present application.

[0083] Preferably, as Figure 3 、 Figure 6 and Figure 7 shown, third arc-shaped protruding portions 63 are provided on the side edges of both ends of the first contact 1 and the second contact 2. The third arc-shaped protruding portion 63 of the first contact 1 and the third arc-shaped protruding portion 63 of the second contact 2 are arranged oppositely, and the distance between them is greater than the distance of the clamping gap between the first contact 1 and the second contact 2.

[0084] By providing the third arc-shaped protruding portions 63 at the ends of the first contact 1 and the second contact 2, the included angle between them can be made greater than the distance of the clamping gap between the first contact 1 and the second contact 2. In this way, it is more convenient for the moving contact to be inserted into the static contact.

[0085] Furthermore, third arc-shaped protruding portions 63 are provided on both side edges of the first contact 1 and the second contact 2, or third arc-shaped protruding portions 63 are provided on one side edge of the first contact 1 and the second contact 2. It conforms to the rotation direction of the moving contact and is inserted and cooperatively connected with the static contact. When the moving contact rotates clockwise or counterclockwise to be inserted and cooperatively connected with the static contact, the third arc-shaped protruding portions 63 are arranged on one side of the first contact 1 and the second contact 2; the moving contact can be connected with the static contact by rotating clockwise or counterclockwise. At this time, the third arc-shaped protruding portions 63 are respectively arranged on both sides of the first contact 1 and the second contact 2 to meet the condition that it can be connected with the static contact by rotating clockwise or counterclockwise.

[0086] Of course, in some inferior embodiments, the third arc-shaped protrusion 63 may not be arranged oppositely. It may be arranged only on one side, for example, only on the first contact 1 or the second contact 2, so as to save production costs. Thus, it can be seen that the connection relationship between the third arc-shaped protrusion 63 and the moving contact can have various embodiments. All of the above that can be conceived by those skilled in the art in combination with the inspiration of the prior art belong to the protection scope of this application. In addition, the third arc-shaped protrusion 63 may not be an absolute arc structure. As long as it is convenient for inserting with the static contact and achieves the same technical effect, it belongs to the protection scope of this application and will not be elaborated here.

[0087] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when it is usually placed during use. It is only for the convenience of description, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating relative importance.

[0088] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A rotary contact component, comprising a moving contact, a support base (7) and a support cover (8), wherein the support base (7) and the support cover (8) are fixedly connected, the moving contact is installed between the support base (7) and the support cover (8), the moving contact includes a first contact (1) and a second contact (2) arranged oppositely, and clamping gaps for clamping a static contact are formed at both ends of the first contact (1) and the second contact (2), and it is characterized in that, the moving contact further includes a contact support (3) and at least one elastic member (5), at least one elastic member (5) is arranged on the opposite surface of the first contact (1) and / or the second contact (2), two grooves (31) are formed on two opposite surfaces of the contact support (3), the two grooves (31) are through structures along the length direction of the moving contact, the middle parts of the first contact (1) and the second contact (2) of the moving contact are respectively placed in the two grooves (31), a moving contact receiving groove (9) is formed between the support base (7) and the support cover (8), and a limiting structure cooperating with the contact support (3) is arranged in the moving contact receiving groove (9), and the contact support (3), the first contact (1), the second contact (2) and at least one elastic member (5) are located between the support base (7) and the support cover (8).

2. The rotating contact assembly according to claim 1, characterized in that, At least one hot melt post (71) is arranged on the support base (7) or / and the support cover (8), and a hot melt hole (81) cooperating with the hot melt post (71) is arranged on the support cover (8) or / and the support base (7).

3. The rotary contact assembly according to claim 1, wherein The support base (7) and / or the support cover (8) is provided with a moving contact receiving groove (9), the limiting structure includes the side wall of the moving contact receiving groove (9), and the contact support (3) is placed in the moving contact receiving groove (9) and is in limiting cooperation with the side wall of the moving contact receiving groove (9).

4. The rotary contact assembly according to claim 1, wherein, The support base (7) and the support cover (8) are in the shape of a disc with the same diameter, two sliding grooves (73) are formed between the edges of the support base (7) and the support cover (8), the two sliding grooves (73) are respectively arranged on both sides in the width direction of the moving contact receiving groove (9), two static contacts respectively extend into the two sliding grooves (73), and the rotation trajectories corresponding to the support base (7) and the support cover (8) are inserted into or disconnected from the clamping gaps at both ends of the moving contact.

5. The rotary contact assembly according to claim 4, wherein, An isolation boss is arranged between the sliding groove (73) and the moving contact receiving groove (9) to isolate the sliding groove (73) from the moving contact receiving groove (9), and one ends of the two sliding grooves (73) are respectively communicated with both ends of the moving contact receiving groove (9).

6. The rotary contact assembly according to claim 5, wherein The isolation boss includes two support bosses (75) arranged on the support base (7), the two support bosses (75) are respectively located between the two sliding grooves (73) and the moving contact receiving groove (9), at least one hot melt post (71) is arranged on the support boss (75) of the support base (7), and a hot melt hole (81) cooperating with the hot melt post (71) is arranged on the support cover (8).

7. The rotary contact assembly according to claim 6, wherein On one side of each of the two support bosses (75) close to the moving contact receiving groove (9), there is respectively provided an arc-shaped support post. In the middle of the first contact (1) and the second contact (2), a first arc-shaped protruding portion (61) is arranged along the width direction of the moving contact. Correspondingly, a second arc-shaped protruding portion (62) is arranged in the middle of the contact support (3). The arc-shaped support post corresponds to the second arc-shaped protruding portion (62) in the middle of the contact support (3). An arc-shaped hole or arc-shaped groove matching with the arc-shaped support post is provided on the support cover (8). The arc-shaped support post penetrates into the arc-shaped hole or arc-shaped groove, so that the support base (7) and the support cover (8) are installed and fixed.

8. The rotary contact assembly according to claim 7, characterized in that, The two arc-shaped support posts can partially protrude from the outer surface of the support cover (8). On the bottom of the support base (7), there are provided two second arc-shaped grooves corresponding to the arc-shaped support posts.

9. The rotating contact assembly according to claim 1, characterized in that, At least one elastic rib (74) is further arranged on the support base (7), and a first card slot or first card hole corresponding to the elastic rib (74) is provided on the support cover (8).

10. The rotary contact assembly according to claim 1, characterized in that, In the middle of the outer surface of the support cover (8), a main plug (84) is provided. On the bottom of the support base (7), a first plug hole corresponding to the installation of the main plug (84) is provided.

11. The rotary contact assembly according to claim 1, wherein The support base (7) and the support cover (8) are made of insulating gas-producing materials.

12. The rotary contact component according to claim 1, characterized in that, The moving contact further includes at least one fixing shaft (4). At least one of the fixing shafts (4) penetrates through the middle parts of the first contact (1), the second contact (2), the contact support (3) and the elastic member (5), and fixes the first contact (1), the second contact (2), the contact support (3) and the elastic member (5) into a whole.

13. The rotating contact assembly according to claim 1, wherein, The contact support (3) includes two side parts (32) and a support part (33). The support part (33) is located in the middle of the two side parts (32), and the two side parts (32) are respectively perpendicular to the support part (33). The support part (33) is located between the first contact (1) and the second contact (2).

14. The rotary contact assembly according to claim 13, wherein, The first contact (1) and the second contact (2) are of a flat plate structure. The two sides of the support part (33) are respectively attached to the first contact (1) and the second contact (2). The support part (33) of the contact support (3) forms the clamping gap at both ends of the first contact (1) and the second contact (2).

15. The rotary contact assembly according to claim 1, wherein, The moving contact includes two elastic members (5). The two elastic members (5) are respectively placed on the opposite sides of the first contact (1) and the second contact (2); or the moving contact includes one elastic member (5), and the one elastic member (5) is placed on one side of the opposite side of the first contact (1) or the second contact (2).

16. The rotary contact assembly according to claim 1, wherein, The elastic member (5) is of a long plate-shaped structure. At both ends of the elastic member (5), there are provided first mounting parts (51). On the first contact (1) and / or the second contact (2), there are provided second mounting parts (52) for cooperating with and limiting the first mounting parts (51).

17. An isolating switch, comprising an operating mechanism unit and at least one switch unit arranged in a stacked manner, characterized in that, The switch unit includes the rotary contact assembly according to any one of claims 1-16.

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