CN116453899A

CN116453899A - Rotary isolating switch

Info

Publication number: CN116453899A
Application number: CN202210013452.8A
Authority: CN
Inventors: 顾哲; 蒋家鹏; 葛伟骏
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2023-07-18

Abstract

The utility model provides a rotation type isolator, includes contact module and operation module, contact module includes the movable contact subassembly of being connected with operation module to and set up two sets of static contact subassemblies in movable contact subassembly both sides relatively, the movable contact subassembly includes movable contact bridge and sets up the clamping mechanism at movable contact bridge both ends, clamping mechanism include the elastic component and with the elastic component respectively complex two splint, the elastic component can drive two splint and be close to each other, the static contact subassembly can overcome the effect of elastic component and insert between two splint, through increasing the compressive force between movable contact bridge and the static contact subassembly, can avoid leading to the movable contact subassembly to be burnt out because of the high temperature, is favorable to prolonging service life.

Description

Rotary isolating switch

Technical Field

The invention relates to the field of switching appliances, in particular to a rotary isolating switch.

Background

With the development of the photovoltaic field, rotary isolating switches are also becoming more and more widely used. However, the existing rotary isolating switch is large in size, troublesome to assemble and easy to damage in moving contact assemblies. One is because of lack of protection to the moving contact assembly, and the other is because the pressure is not enough between moving contact assembly and the static contact assembly, leads to the rise of temperature rise, finally leads to moving contact assembly burning loss to lose efficacy.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a rotary isolating switch for effectively protecting a moving contact assembly.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the utility model provides a rotary isolating switch, includes contact module and operation module, contact module includes the moving contact subassembly of being connected with operation module to and set up two sets of static contact subassemblies in moving contact subassembly both sides relatively, the moving contact subassembly includes the moving contact bridge and sets up the clamping mechanism at moving contact bridge both ends, and clamping mechanism includes the elastic component and with the elastic component respectively two matched with splint, the elastic component can drive two splint and be close to each other, and the effect of elastic component can be overcome to the static contact subassembly and insert between two splint.

Preferably, the elastic piece is U-shaped, and the elastic piece comprises two elastic arms and a connecting arm connected between the two elastic arms, and the two elastic arms respectively drive the two clamping plates to be close to each other.

Preferably, the movable contact bridge is provided with a linkage hole matched with the rotating shaft, and the hole wall of the linkage hole is provided with a yielding groove for accommodating the connecting arm.

Preferably, the linkage hole comprises two vertex angles respectively positioned on the central connecting lines of the two clamping plates, and the two vertex angles are respectively provided with the abdication groove.

Preferably, the two elastic arms are respectively provided with contact arms matched with the clamping plates at two sides far away from one end of the connecting arm, and the contact arms at two sides are respectively connected with the elastic arms in a T shape.

Preferably, the elastic piece comprises two elastic wires with the same structure, the two elastic wires are respectively clamped on the moving contact assembly through self elastic force after being respectively bent, and two ends of each elastic wire are respectively bent towards one end far away from the other elastic wire to form the contact arm.

Preferably, the side of the clamping plate is provided with a guide surface, and the guide surface and the direction of the fixed contact assembly inserted between the clamping plates are obliquely arranged.

Preferably, the movable contact bridge comprises two opposite touch plates, the two touch plates respectively comprise rotating discs, clamping plates are respectively arranged on two sides of the two rotating discs, two clamping plates on the same side of the two rotating discs and corresponding elastic pieces form a group of clamping mechanisms, linkage holes for connecting rotating shafts are respectively arranged in the middle of the two rotating discs, two first positioning structures and two second positioning structures which are integrated are respectively arranged on the periphery of the linkage holes correspondingly on the two rotating discs, and the first positioning structures can be inserted into the second positioning structures on the other rotating discs to limit.

Preferably, the movable contact assembly comprises two arc-shaped plates with the same structure, the movable contact bridge is arranged between the two arc-shaped plates, a first opposite inserting structure and a second opposite inserting structure are respectively arranged on the two arc-shaped plates, and an installation groove for installing the movable contact bridge is arranged between the first opposite inserting structure and the second opposite inserting structure, wherein the first opposite inserting structure of one arc-shaped plate can be inserted into the second opposite inserting structure of the other arc-shaped plate to limit.

Preferably, the cross sections of the first inserting structure and the second inserting structure are arc-shaped respectively, the two ends of the first inserting structure and the two ends of the second inserting structure are arranged at intervals respectively, the mounting groove comprises a first mounting groove arranged on the inner sides of the first inserting structure and the second inserting structure, and two second mounting grooves respectively arranged between the two ends of the first inserting structure and the two ends of the second inserting structure, the two second mounting grooves are communicated with the two sides of the first mounting groove respectively, a second linkage hole is formed in the first mounting groove, the second linkage hole is matched with the rotating shaft, and the operating module drives the arc-shaped isolation plate to rotate through the rotating shaft.

Preferably, the rotating shaft comprises an operating part, the arc-shaped baffle plate and the movable contact bridge are respectively sleeved on the operating part, the two sides of the operating part are respectively provided with a connecting part and a positioning part, the positioning part is provided with a connecting hole matched with the connecting part of the operating module or another spliced rotating shaft, when the rotating shafts are spliced and used, a reinforcing shaft is arranged between the adjacent rotating shafts, the connecting part is provided with a first mounting hole matched with one end of the reinforcing shaft, and the connecting hole is provided with a second mounting hole matched with the other end of the reinforcing shaft.

The rotary isolating switch provided by the invention is characterized in that the clamping mechanisms are respectively arranged at the two sides of the movable contact bridge, each clamping mechanism comprises an elastic piece and two clamping plates respectively matched with the elastic piece, the elastic piece can drive the two clamping plates to be close to each other, and the static contact assembly can be inserted between the two clamping plates against the action of the elastic piece. Through increasing the compressive force between movable contact bridge and the static contact subassembly, can avoid leading to the movable contact subassembly to be burnt out because of the high temperature, be favorable to increase of service life.

In addition, the U-shaped elastic piece has the advantage of small volume, can be directly sleeved on the moving contact assembly, is very convenient to assemble, and can further reduce the height of the moving contact assembly. And the T-shaped structure formed by the contact arm and the elastic arm can be better contacted with the clamping plate, so that more reliable clamping force is provided for the clamping plate.

Drawings

FIG. 1 is a schematic diagram of a rotary isolating switch according to the present invention;

FIG. 2 is an exploded view of the rotary disconnecting switch of the invention;

FIG. 3 is an exploded view of the inventive operational module;

FIG. 4 is an exploded view of the inventive contact module;

FIG. 5 is a schematic illustration of the invention in a break-out position of the contact module;

FIG. 6 is an exploded view of the movable contact assembly of the present invention;

FIG. 7 is an exploded view of the movable contact bridge of the present invention;

FIG. 8 is a schematic view of the structure of the static contact assembly of the present invention;

FIG. 9 is a schematic view of the structure of the rotary shaft of the present invention;

fig. 10 is a schematic structural view of the inventive elastic member.

Detailed Description

The following is a further description of embodiments of the rotary disconnector according to the invention, given in connection with the examples of figures 1 to 10. The rotary disconnecting switch of the present invention is not limited to the description of the following embodiments.

As shown in fig. 6 to 7, the rotary isolating switch of the present invention includes a contact module 1 and an operation module 2, where the contact module 1 includes a moving contact assembly 120 connected with the operation module 2, and two groups of fixed contact assemblies 130 disposed on two opposite sides of the moving contact assembly 120, and is characterized in that: the moving contact assembly 120 comprises a moving contact bridge and clamping mechanisms arranged at two ends of the moving contact bridge, the clamping mechanisms comprise an elastic piece 171 and two clamping plates 172 respectively matched with the elastic piece 171, the elastic piece 171 can drive the two clamping plates 172 to be close to each other, and the fixed contact assembly 130 can be inserted between the two clamping plates 172 against the action of the elastic piece 171.

The rotary isolating switch provided by the invention can avoid burning loss of the moving contact assembly 120 caused by overhigh temperature by increasing the pressing force between the moving contact bridge and the fixed contact assembly 130, thereby being beneficial to prolonging the service life.

Specifically, the movable contact bridge includes two oppositely disposed contact plates 122, the two contact plates 122 respectively include a turntable 173, two sides of the two turntable 173 are respectively provided with the clamping plates 172, two clamping plates 172 on the same side of the two turntable 173 and the corresponding elastic member 171 form a group of clamping mechanisms, the middle parts of the two turntable 173 are respectively provided with the linkage hole 161 for connecting the rotating shaft 400, two first positioning structures 181 and two second positioning structures 182 which are integrated are respectively arranged on the two turntable 173 around the linkage hole 161, and the first positioning structures 181 can be inserted into the second positioning structures 182 on the other turntable 173 to limit.

It will be appreciated that only one touch pad 122 may be provided, and that a set of opposed clamping plates 172 may be provided on each side of the touch pad 122. In addition, the first positioning structure 181 of the present embodiment is a boss, the second positioning structure 182 is a through hole, and the first positioning structure 181 and the second positioning structure 182 may be replaced by other manners to limit, for example, a riveting process or a welding process, to connect the two turntables 173, which are all within the protection scope of the present invention.

Further, the elastic member 171 is U-shaped, and the elastic member 171 can be sleeved on the movable contact bridge from the linkage hole 161, and both ends of the elastic member are clamped at the outer sides of the two corresponding clamping plates 172. The U-shaped elastic member 171 of the present embodiment has the advantage of small volume, and can be directly sleeved on the moving contact assembly 120, so that the assembly is very convenient. In addition, two plate-shaped elastic pieces 171 are not required to be respectively arranged on the upper side and the lower side of the movable contact bridge, and the height of the movable contact assembly 120 can be further reduced, so that the whole volume of a product is reduced.

Further, the movable contact bridge is provided with a linkage hole 161 matching with the rotation shaft 400, and a hole wall of the linkage hole 161 is provided with a relief groove 163 for accommodating the connection arm 175, and the relief groove 163 can avoid interference between the elastic member 171 and the rotation shaft 400. The linkage hole 161 of the present embodiment is quadrilateral, preferably square, and two vertex angles of the linkage hole 161 are respectively located on a connecting line of centers of the two clamping plates 172, and two vertex angles located on the connecting line of centers of the two clamping plates 172 are respectively provided with a yielding groove 163.

It is understood that the linkage hole 161 may take other shapes, such as a triangle, a D-shape, or a polygonal or shaped hole. The relief groove 163 may be provided at a position other than the top corner, for example, the relief groove 163 that engages with the elastic member 171 may be provided on the wall of the linkage hole 161. In addition, the rotation shaft 400 may be provided with a relief groove 163 to avoid the elastic member 171, the linkage hole 161 includes two vertex angles respectively located on the central lines of the two clamping plates 172, and the two vertex angles are respectively provided with the relief groove 163, which falls within the protection scope of the present invention.

As shown in fig. 10, the elastic member 171 includes two elastic arms 174, and a connecting arm 175 connected between the two elastic arms 174, the two elastic arms 174 respectively drive the two clamping plates 172 to approach each other, contact arms 176 engaged with the clamping plates 172 are respectively provided on two sides of one end of the two elastic arms 174 away from the connecting arm 175, and the contact arms 176 on two sides are respectively connected with the elastic arms 174 in a T-shape. The T-shaped configuration of contact arms 176 and spring arms 174 provides better contact with clamping plate 172 and more reliable clamping force for clamping plate 172.

Further, the elastic member 171 is formed by two elastic wires 178 with the same structure, after the two elastic wires 178 are respectively bent, the two elastic wires 178 are respectively clamped on the moving contact assembly 120 by self elastic force, no fixation is needed between the two elastic wires 178, two ends of the elastic wires 178 are respectively bent towards one end far away from the other elastic wire 178 to form the contact arm 176, and the contact arm has the characteristic of convenient processing.

As shown in fig. 7, the clamping plates 172 are respectively provided with a guiding surface 179 at the other side edge far from the turntable 173, the guiding surfaces 179 and the direction of inserting the static contact assembly 130 between the clamping plates 172 are obliquely arranged, the guiding surfaces 179 of the embodiment are inclined towards the direction far from the other clamping plate 172, and the static contact can be conveniently inserted between the two clamping plates 172 against the action of the elastic member 171 through the guiding surfaces 179. It is understood that the guide surface 179 may be an arc surface structure or a chamfer structure, which falls within the protection scope of the present invention.

As shown in fig. 5-6, the movable contact bridge includes two oppositely disposed contact plates 122, the two contact plates 122 respectively include a turntable 173, two sides of the two turntable 173 are respectively provided with clamping plates 172, two clamping plates 172 on the same side of the two turntable 173 and corresponding elastic members 171 form a group of clamping mechanisms, linkage holes 161 for connecting the rotating shafts 400 are respectively provided in the middle of the two turntable 173, two first positioning structures 181 and two second positioning structures 182 which are integrated are respectively provided on the two turntable 173 corresponding to the periphery of the linkage holes 161, and the first positioning structures 181 can be inserted into the second positioning structures 182 on the other turntable 173 to limit. Through the back-off of two arc baffles 121 with the same structure, the device has the characteristics of simple structure, convenient installation and small volume, and after the first pair of inserting structures 141 are inserted into the second pair of inserting structures 142, a closed space protection movable contact bridge can be formed, so that the stop contact bridge is prevented from being damaged.

As shown in fig. 1-2, the number of the contact modules 1 in the present embodiment is three, the three sets of contact modules 1 are stacked below the operation module 2, the three sets of contact modules 1 are sequentially a first contact module 11, a second contact module 12 and a third contact module 13 from bottom to top, and the structures of the three sets of contact modules 1 are substantially the same.

As shown in fig. 2-3, the operation module 2 includes a handle 201, a housing 202, an operation mechanism 204, and a middle partition 203, one end of the operation mechanism 204 located in the center of the interior of the housing 202 may be connected to the handle 201 by a fixing manner such as a screw, and the other end of the operation mechanism 204 is connected to a transmission shaft 205 slidably mounted on the middle partition 203, where the middle partition 203 is fixedly connected to the housing 202.

As shown in fig. 4-5, the contact module 1 includes a housing 200 and contact assemblies installed in the housing 200, where the contact assemblies include a moving contact assembly 120 and two groups of fixed contact assemblies 130 disposed on two sides of the moving contact assembly 120, the two groups of fixed contact assemblies 130 are respectively provided with a wiring mechanism 110, the moving contact assembly 120 is driven by a rotating shaft 400 to rotate around its own axis to contact with and separate from the corresponding fixed contact assembly 130, and arc extinguishing chambers 300 are respectively disposed on two sides of the moving contact assembly 120.

As shown in fig. 8, the fixed contact assembly 130 is provided with a fixed contact portion 1310 contacting the moving contact assembly 120, and the fixed contact portion 1310 is located in the middle of the fixed contact connecting plate 1320 and extends between the two arc baffles 121 to be matched with the clamping plates. The two ends of the fixed contact connection plate 1320 extend out of the conductive arms 1330 in opposite directions to the fixed contact portion 1310, and the conductive arms 1330 are provided with wire holes for connecting the wire connection assembly 110, which in this embodiment is a threaded hole structure.

As shown in fig. 4, the wiring assemblies 110 in the present embodiment are arranged symmetrically at the center, and in this arrangement, the creepage distance and the electric gap can be effectively increased, so as to ensure the insulation performance of the rotary switch. In addition, the clamping plates and the fixed contact 1310 are distributed at 90 degrees in the opening state, the distance is maximum, and the insulation performance of the rotary switch is effectively ensured.

As shown in fig. 6, the first inserting structure 141 of the present embodiment is a boss, the second inserting structure 142 is a through hole, the first inserting structure 141 can be inserted into the second inserting structure 142 of the other arc-shaped plate 121 in a limit fit manner, the cross sections of the first inserting structure 141 and the second inserting structure 142 are respectively arc-shaped, the two ends of the first inserting structure 141 and the second inserting structure 142 are respectively spaced apart, the mounting groove comprises a first mounting groove 151 disposed inside the first inserting structure 141 and the second inserting structure 142, and two second mounting grooves 152 respectively disposed between the two ends of the first inserting structure 141 and the second inserting structure 142, the two second mounting grooves 152 are respectively communicated with two sides of the first mounting groove 151, a second linkage hole 162 is disposed in the middle of the first mounting groove 151, the second linkage hole 162 and the linkage hole 161 are respectively matched with the rotating shaft 400, and the operating module 2 drives the arc-shaped plate 121 and the moving contact bridge to rotate respectively through the rotating shaft 400.

The second opposite-insertion structure 142 of the through hole structure of the present embodiment can reduce the overall thickness of the moving contact assembly 120, thereby reducing the volume of the product. Of course, the second mating structure 142 may also be a counterbore structure. The first and second inserting structures 141 and 142 may take other shapes, such as polygonal shapes, and are all within the scope of the present invention.

As shown in fig. 6-9, the rotating shaft 400 is provided with an operation portion 420 that is respectively sleeved with the second linkage hole 162 and the linkage hole 161, the cross-sectional shape of the operation portion 420 is the same as the cross-sectional shape of the second linkage hole 162 and the linkage hole 161, and the rotating shaft 400 can drive the whole moving contact assembly 120 to rotate. In this embodiment, the cross-section is square, but may be polygonal or shaped such as triangular or rectangular.

One end of the rotating shaft 400 is a positioning portion 430, and the rotating shaft 400 can be slidably mounted in cooperation with the housing 200 of the contact module 1 through the positioning portion 430, so that the moving contact assembly 120 is mounted on the housing 200. The end surface of the positioning portion 430 of the rotation shaft 400 is provided with a connection hole 440, the connection hole 440 can be matched with the connection portion 410 of another rotation shaft 400, so that a plurality of rotation shafts 400 can be assembled together for use, and the connection portion 410 of the rotation shaft 400 arranged at the center of the third contact module 13 positioned at the uppermost layer is connected with the transmission shaft 205 of the operation module 21.

Further, when the plurality of rotary shafts 400 are assembled and used, the reinforcing shafts 500 are arranged between the adjacent rotary shafts 400, the connecting portions 410 are provided with first mounting holes 450 matched with one ends of the reinforcing shafts 500, the connecting holes 440 are provided with second mounting holes (not shown in the figure) matched with the other ends of the reinforcing shafts 500, synchronism in the rotating process of the rotary switch is guaranteed through the reinforcing shafts 500, and the problem of poor synchronism in the switching-on and switching-off process of the contact modules assembled by the multistage rotary shafts 400 can be prevented.

The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments disclosed herein. It should be understood that those skilled in the art to which the present invention pertains may make several simple deductions or substitutions without departing from the inventive concept, and should be considered as falling within the scope of the present invention.

Claims

1. The utility model provides a rotary isolating switch, includes contact module (1) and operation module (2), contact module (1) are including moving contact subassembly (120) be connected with operation module (2) to and set up two sets of static contact subassemblies (130) in moving contact subassembly (120) both sides relatively, its characterized in that: the movable contact assembly (120) comprises a movable contact bridge and clamping mechanisms arranged at two ends of the movable contact bridge, each clamping mechanism comprises an elastic piece (171) and two clamping plates (172) which are matched with the elastic pieces (171) respectively, the elastic pieces (171) can drive the two clamping plates (172) to be close to each other, and the fixed contact assembly (130) can be inserted between the two clamping plates (172) by overcoming the action of the elastic pieces (171).

2. The rotary isolation switch of claim 1, wherein: the elastic piece (171) is U-shaped, the elastic piece (171) comprises two elastic arms (174) and a connecting arm (175) connected between the two elastic arms (174), and the two elastic arms (174) respectively drive the two clamping plates (172) to be close to each other.

3. The rotary isolation switch of claim 1, wherein: the movable contact bridge is provided with a linkage hole (161) matched with the rotary shaft (400), and the hole wall of the linkage hole (161) is provided with a yielding groove (163) for accommodating the connecting arm (175).

4. A rotary disconnecting switch according to claim 3, characterized in that: the linkage hole (161) comprises two vertex angles which are respectively positioned on the central connecting lines of the two clamping plates (172), and the two vertex angles are respectively provided with the abdication grooves (163).

5. The rotary isolation switch of claim 2, wherein: the two elastic arms (174) are respectively provided with contact arms (176) matched with the clamping plates (172) at two sides far away from one end of the connecting arm (175), and the contact arms (176) at two sides are respectively connected with the elastic arms (174) in a T shape.

6. The rotary isolation switch of claim 5, wherein: the elastic piece (171) is composed of two elastic wires (178) with the same structure, the two elastic wires (178) are respectively clamped on the moving contact assembly (120) through self elastic force after being respectively bent, and two ends of each elastic wire (178) are respectively bent towards one end far away from the other elastic wire (178) to form the contact arm (176).

7. The rotary isolation switch of claim 1, wherein: the side of the clamping plate (172) is provided with a guide surface (179), and the direction of the guide surface (179) and the direction of the fixed contact assembly (130) inserted between the clamping plate (172) is inclined.

8. The rotary isolation switch of claim 1, wherein: the movable contact bridge comprises two oppositely arranged contact plates (122), wherein the two contact plates (122) respectively comprise rotating discs (173), clamping plates (172) are respectively arranged on two sides of the two rotating discs (173), two clamping plates (172) on the same side of the two rotating discs (173) and corresponding elastic pieces (171) form a group of clamping mechanisms, linkage holes (161) for connecting rotating shafts (400) are respectively arranged in the middle of the two rotating discs (173), two first positioning structures (181) and two second positioning structures (182) which are integrated are respectively arranged on the periphery of the linkage holes (161) on the two rotating discs (173), and the first positioning structures (181) can be inserted into the second positioning structures (182) on the other rotating discs (173) to limit.

9. The rotary isolation switch of claim 1, wherein: the movable contact assembly (130) comprises two arc-shaped plates (121) with the same structure, the movable contact bridge is arranged between the two arc-shaped plates (121), a first opposite inserting structure (141) and a second opposite inserting structure (142) are respectively arranged on the two arc-shaped plates (121), an installation groove for installing the movable contact bridge is arranged between the first opposite inserting structure (141) and the second opposite inserting structure (142), and the first opposite inserting structure (141) of one arc-shaped plate (121) can be inserted into the second opposite inserting structure (142) of the other arc-shaped plate (121) to limit.

10. The rotary isolation switch of claim 9, wherein: the cross sections of the first inserting structure (141) and the second inserting structure (142) are respectively arc-shaped, two ends of the first inserting structure (141) and two ends of the second inserting structure (142) are respectively arranged at intervals, the mounting groove comprises a first mounting groove (151) arranged on the inner side of the first inserting structure (141) and the second inserting structure (142), and two second mounting grooves (152) respectively arranged between the two ends of the first inserting structure (141) and the two ends of the second inserting structure (142), the two second mounting grooves (152) are respectively communicated with two sides of the first mounting groove (151), a second linkage hole (162) is formed in the first mounting groove (151), the second linkage hole (162) is matched with the rotating shaft (400), and the operating module (2) drives the arc-shaped barrier (121) to rotate through the rotating shaft (400).

11. A rotary disconnecting switch according to claim 3 or 8, characterized in that: the rotating shafts (400) comprise an operation part (420), the arc-shaped plates (121) and the movable contact bridge are respectively sleeved on the operation part (420), connecting parts (410) and positioning parts (430) are respectively arranged on two sides of the operation part (420), connecting holes (440) matched with the connecting parts (410) of the rotating shafts (400) used for assembling the operation module (2) or the other one are arranged on the positioning parts (430), reinforcing shafts (500) are arranged between the adjacent rotating shafts (400) when the rotating shafts (400) are assembled for use, first mounting holes (450) matched with one ends of the reinforcing shafts (500) are formed in the connecting parts (410), and second mounting holes matched with the other ends of the reinforcing shafts (500) are formed in the connecting holes (440).