Connection structure of current transformer

Abstract

The utility model relates to the field of electrical detection equipment, in particular to a connection structure of a current transformer, which comprises a mounting base. The electric transformer further comprises a second groove body and a male connecting end, the left end of the mounting base is provided with a first groove body for placement and mounting, a working electric transformer is placed in the first groove body, the rear end of the electric transformer is fixedly connected with two limiting columns, and the right ends of the limiting columns are fixedly connected with a fixing disc. The racks are pulled to the stopping position of the stopping block, then the fixing disc is inserted into the second groove body, the two racks are pushed, the upper ends of the racks are meshed with the tooth grooves, the stopping block is driven to rotate in the third groove body, and therefore limiting and fixing are carried out, when replacement is needed, the racks are pulled to the stopping block, and then the electric transformer can be taken out. The problems that in the prior art, when an electric transformer is installed, bolts need to be used for fixing in a narrow space, tools are inconvenient to enter, and installation is tedious are solved.

Description

Technical Field

[0001] This utility model belongs to the field of electrical testing equipment, specifically relating to the connection structure of current transformers. Background Technology

[0002] Current transformers are commonly used in switching devices such as circuit breakers. The main circuit of the switching device passes through the current transformer, which enables the coil of the current transformer to generate an induced current. If the induced current meets certain conditions, the control unit will cut off the main circuit.

[0003] Current transformers in the present technology are usually installed in electrical cabinets, but the installation environment is relatively small. Furthermore, current transformers are usually fixed with bolts and nuts, but the small environment makes it inconvenient to use screwdrivers for disassembly and assembly. Therefore, the installation of existing current transformers is relatively cumbersome and difficult. Utility Model Content

[0004] To overcome the problem of cumbersome and difficult installation of existing current transformers, a connection structure for current transformers is proposed.

[0005] The technical solution of this utility model is as follows: a connection structure for a current transformer, including a mounting base; it also includes a second groove and a male connection end. The left end of the mounting base has a first groove for placement and installation. The working current transformer is placed in the first groove. Two limiting posts are fixedly connected to the rear end of the current transformer. A fixing plate is fixedly connected to the right end of the limiting posts. A rotating ring is rotatably provided on the outer wall of the limiting posts. Two stops for fixing are fixedly connected to the outer wall of the rotating ring. Two second grooves are opened on the right end of the inner wall of the first groove. A third groove is opened on the arc-shaped inner wall of the second groove. The second grooves are adapted to the stops. The arc-shaped inner wall of the second groove is in contact with the outer wall of the rotating ring.

[0006] Preferably, two sliding grooves are provided on the right end of the inner wall of the first groove, and the two sliding grooves are provided at the front and rear ends of the mounting base. A stop block is fixed to the right end of the inner wall of the sliding groove, and the sliding groove and the second groove are interconnected.

[0007] Preferably, the outer wall of the rotating ring is provided with a toothed groove, the inner wall of the sliding groove is provided with a rack, the lower end of the rack is provided with a fourth groove, and the tooth surface of the rack and the tooth surface of the toothed groove mesh with each other.

[0008] Preferably, a limiting strip is fixed to the right end of the inner wall of the sliding groove, and the extended end of the limiting strip is located in the direction of the left end of the rack.

[0009] Preferably, the mounting base has magnetic grooves on the upper and lower parts where the sliding grooves are through the front and rear ends. Pulling blocks are fixed to the ends of the two racks that are far apart from each other, and magnets are fixed to the ends of the two pull blocks that are close to each other. The magnets and magnetic grooves correspond to each other and attract each other.

[0010] Preferably, the right end of the current transformer has two female connection terminals, and the right end of the inner wall of the first tank has two male connection terminals fixedly connected.

[0011] Preferably, the upper end of the mounting base is provided with a socket, the female connection end and the male connection end are electrically connected, the socket and the male connection end are electrically connected, and four fixed mounting blocks are provided on the right end of the mounting base.

[0012] The beneficial effects of this utility model are as follows: After the rack is pulled to the blocking position at the stop block, the fixing plate is inserted into the second groove. By pushing the two racks, the upper end of the rack and the tooth groove mesh with each other, driving the stop block to rotate in the third groove, thereby limiting and fixing. When it is necessary to replace, the current transformer can be taken out by pulling the rack to the stop block. This solves the problem in the prior art that when installing the current transformer, bolts need to be used to fix it in a narrow space, which makes it inconvenient for tools to enter and thus makes the installation cumbersome. Attached Figure Description

[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0014] Figure 2 The diagram shown is a three-dimensional structural schematic of the electrical transformer of this utility model;

[0015] Figure 3 The diagram shown is a three-dimensional structural schematic of the mounting base and mounting components of this utility model.

[0016] Figure 4 The diagram shown is a three-dimensional structural schematic of the mounting base of this utility model;

[0017] Figure 5 The diagram shown is a three-dimensional structural schematic of the rack and rotating ring of this utility model.

[0018] The markings in the attached diagram are as follows: 1. Mounting base; 2. Fixed mounting block; 3. Socket; 4. First slot; 5. Current transformer; 6. Female connection terminal; 7. Male connection terminal; 8. Sliding slot; 9. Magnetic slot; 10. Restriction block; 11. Second slot; 12. Third slot; 13. Limiting strip; 14. Rack; 15. Fourth slot; 16. Pulling block; 17. Magnet; 18. Limiting post; 19. Fixed plate; 20. Rotating ring; 21. Stop block; 22. Gear groove. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figures 1-5This utility model provides an embodiment of a current transformer connection structure, including a mounting base 1; it also includes a second groove 11 and a male connection end 7. The left end of the mounting base 1 has a first groove 4 for placement and installation. The first groove 4 contains a working current transformer 5. The rear end of the current transformer 5 is fixedly connected to two limiting posts 18. The right end of the limiting posts 18 is fixedly connected to a fixing plate 19. The outer wall of the limiting posts 18 is rotatably provided with a rotating ring 20. The outer wall of the rotating ring 20 is fixedly connected to two stops 21 for fixing. The right end of the inner wall of the first groove 4 has two second grooves 11. The arc-shaped inner wall of the second groove 11 has a third groove 12. The second grooves 11 are adapted to the stops 21. The arc-shaped inner wall of the second groove 11 is in contact with the outer wall of the rotating ring 20. Through the meshing structure, the stops 21 on the rotating ring 20 are driven to rotate in the third groove 12. The resulting limiting structure can realize the rapid installation of the current transformer 5.

[0021] Please see Figures 1-3 In this embodiment, the mounting base 1 has sliding grooves 8 at both ends and magnetic grooves 9 at the top and bottom. Pull blocks 16 are fixed to the ends of the two racks 14 that are far apart from each other, and magnets 17 are fixed to the ends of the two pull blocks 16 that are close to each other. The magnets 17 and magnetic grooves 9 correspond one-to-one and attract each other. When the current transformer 5 is installed, the magnets 17 and magnetic grooves 9 attract each other to prevent the racks 14 from shaking in the sliding grooves 8. The right end of the current transformer 5 has two female connection terminals 6. The right end of the inner wall of the first groove 4 has two male connection terminals 7. The upper end of the mounting base 1 has a socket 3. The female connection terminals 6 and male connection terminals 7 are electrically connected. The right end of the mounting base 1 has four fixed mounting blocks 2. When the current transformer 5 is inserted into the first groove 4, the male connection terminals 7 and female connection terminals 6 are in contact. The current signal can be read by inserting the connecting cable into the socket 3.

[0022] Please see Figures 3-5 In this embodiment, two sliding grooves 8 are opened at the right end of the inner wall of the first groove 4. Both sliding grooves 8 are opened through the front and rear ends of the mounting base 1. A stop block 10 is fixedly connected to the right end of the inner wall of the sliding groove 8. The sliding groove 8 and the second groove 11 are interconnected. The stop block 10 on the sliding groove 8 is used to limit the distance. When the rack 14 is pulled, the fourth groove 15 is blocked by the stop block 10, and the current transformer 5 can be inserted for installation. The outer wall of the rotating ring 20 is provided with a toothed groove 22. The inner wall of the sliding groove 8 is slidably provided with a rack 14. The lower end of the rack 14 is provided with a fourth groove 15. The tooth surface of the rack 14 and the tooth surface of the toothed groove 22 mesh with each other. A limit strip 13 is fixedly connected to the right end of the inner wall of the sliding groove 8. The extension end of the limit strip 13 is located in the left end direction of the rack 14. The limit strip 13 can prevent the upper gear of the rack 14 from bending, so that it cannot mesh normally.

[0023] When a quick installation of the current transformer is required, the two racks 14 on the sliding groove 8 are pulled until the fourth groove 15 on the rack 14 is blocked by the stop block 10, stopping the pulling of the rack 14. Then, the two fixing plates 19 on the current transformer 5 are inserted into the second groove 11. After insertion, the two racks 14 are pushed towards each other, and the upper end of the rack 14 meshes with the tooth groove 22 on the rotating ring 20, thereby driving the stop block 21 to rotate in the third groove 12, so that the left end of the stop block 21 is not Adapted to the outlet of the second slot 11, it can fix the two resistance blocks 10 on the current transformer 5. When the current transformer 5 is inserted into the first slot 4, the male connection end 7 and the female connection end 6 are in contact. The current signal can be read by inserting the connecting cable into the socket 3. By pulling the two magnets 17 on the block 16 and the magnetic groove 9 to attract each other, the rack 14 can be prevented from becoming loose, thus preventing the problem of insecure fixation. When it is necessary to remove and replace, the two racks 14 can be pulled to the blocking position on the resistance block 10.

Claims

1. A connection structure for a current transformer, comprising a mounting base (1); characterized in that: It also includes a second groove (11) and a male connection end (7). The left end of the mounting base (1) is provided with a first groove (4) for placement and installation. The first groove (4) contains a working current transformer (5). The rear end of the current transformer (5) is fixedly connected to two limit posts (18). The right end of the limit post (18) is fixedly connected to a fixing plate (19). The outer wall of the limit post (18) is rotatably provided with a rotating ring (20). The outer wall of the rotating ring (20) is fixedly connected to two blocks (21) for fixing. The right end of the inner wall of the first groove (4) is provided with two second grooves (11). The arc-shaped inner wall of the second groove (11) is provided with a third groove (12). The second groove (11) is adapted to the block (21). The arc-shaped inner wall of the second groove (11) is in contact with the outer wall of the rotating ring (20).

2. The connection structure of the current transformer according to claim 1, characterized in that: Two sliding grooves (8) are opened on the right end of the inner wall of the first groove (4). The two sliding grooves (8) are opened through the front and rear ends of the mounting base (1). A stop block (10) is fixed to the right end of the inner wall of the sliding groove (8). The sliding groove (8) and the second groove (11) are interconnected.

3. The connection structure of the current transformer according to claim 1, characterized in that: The outer wall of the rotating ring (20) is provided with a toothed groove (22), and the inner wall of the sliding groove (8) is provided with a rack (14). The lower end of the rack (14) is provided with a fourth groove (15), and the tooth surface of the rack (14) and the tooth surface of the toothed groove (22) mesh with each other.

4. The connection structure of the current transformer according to claim 2, characterized in that: A limiting strip (13) is fixed to the right end of the inner wall of the sliding groove (8), and the extended end of the limiting strip (13) is located in the direction of the left end of the rack (14).

5. The connection structure of the current transformer according to claim 1, characterized in that: The mounting base (1) has sliding grooves (8) at both ends and magnetic grooves (9) at the top and bottom. Pull blocks (16) are fixed to the ends of the two racks (14) that are far apart from each other, and magnets (17) are fixed to the ends of the two pull blocks (16) that are close to each other. The magnets (17) and magnetic grooves (9) correspond to each other and attract each other.

6. The connection structure of the current transformer according to claim 1, characterized in that: Two female connection terminals (6) are opened at the right end of the current transformer (5), and two male connection terminals (7) are fixed to the right end of the inner wall of the first tank (4).

7. The connection structure of the current transformer according to claim 3, characterized in that: The upper end of the mounting base (1) is provided with a socket (3), the female connection end (6) and the male connection end (7) are electrically connected, the socket (3) and the male connection end (7) are electrically connected, and four fixed mounting blocks (2) are provided on the right end of the mounting base (1).

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