Wiring terminal of current transformer

Abstract

The utility model relates to the technical field of current transformers, in particular to a wiring terminal of a current transformer, which comprises a protection component for preventing a connecting wire from being exposed, and two groups of positioning components for positioning the connecting wire are arranged in the protection component. An elastic assembly facilitating opening of the protection assembly is arranged on one side of the interior of the protection assembly. Wherein the protection assembly comprises a mounting box, a square through hole is formed in one side of the mounting box, the hole wall of the square through hole is slidably connected to the outer portion of a locking block in a sleeving mode, and one end of the locking block is fixedly connected to one end of a pulling and connecting rod; by using the protection assembly, the wiring part of the current transformer is sealed in the mounting box, so that the wire core of the wiring part is prevented from being exposed, the electric shock risk is effectively reduced, meanwhile, short circuit or wire core damage caused by external factors is also avoided, the protection on the current transformer and a circuit is improved, and meanwhile, the service life of the current transformer is prolonged. And the closing process of the sealing cover is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a current transformer wiring terminal. Background Art

[0002] The principle of current transformer is based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and windings. Its primary winding has few turns and is connected in series in the circuit of the current to be measured, so it often has the entire current of the circuit flowing through it. The secondary winding has more turns and is connected in series in the measuring instrument and the protection circuit. When the current transformer is working, its secondary circuit is always closed, so the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to short circuit.

[0003] Application number: CN200920223296.8, "A current transformer terminal assembly", includes a primary busbar, a terminal and a mold, the terminal is welded on the primary busbar, and is characterized in that it also includes two embedded round nuts, the connecting bolts firmly connect the mold end cover, the terminal and the embedded round nut, and the embedded round nut and the connecting bolt are cast. The current transformer terminal assembly provided by the current transformer terminal assembly is cast to avoid cracking caused by the large size of the terminal, the lower limit caused by the excessive tolerance of the terminal's outer dimensions, and the soft material of the terminal causing the effective wire to fail to meet the requirements. The structure is compact, with less consumables and light weight.

[0004] However, after the wiring of the above-mentioned current transformer terminal assembly is completed, the wire core at the wiring position is exposed to the outside without protection, which increases the risk of electric shock. At the same time, short circuits or damage to the wire core may be caused by external factors. Utility Model Content

[0005] The purpose of the utility model is to provide a current transformer terminal to protect the wiring part so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a current transformer terminal, comprising a protective component for preventing leakage of a connecting wire, two groups of positioning components for positioning the connecting wire are arranged inside the protective component, and an elastic component is arranged on one side of the interior of the protective component to facilitate opening of the protective component;

[0007] Wherein, the protection component includes: an installation box, a square through hole is opened on one side of the installation box, the hole wall of the square through hole is slidably sleeved on the outside of the locking block, one end of the locking block is fixedly connected to one end of the pull rod, the other end of the pull rod is fixedly connected to one side of the pulling ring, the outside of the pull rod is slidably inserted into the inside of the U-shaped reaction frame, and the two ends of the U-shaped reaction frame are fixedly connected to the position of the square through hole on the side of the installation box.

[0008] Preferably, the outer portion of the connecting rod is slidably inserted into the inner ring of the reset spring, and both ends of the reset spring are supported between the U-shaped reaction frame and the locking block.

[0009] Preferably, a limiting groove for installing and limiting the current transformer is provided on the top of the installation box.

[0010] Preferably, the bottom of the limiting groove is provided with two groups of through holes 1 for the current transformer wires to pass through, and the bottom of the installation box is provided with through holes 2 for the connecting wires to pass through.

[0011] Preferably, one side of the installation box is hinged to one side of the sealing cover, and a positioning hole is provided on the other side of the sealing cover, and a hole wall of the positioning hole is slidably connected to one end of the locking block.

[0012] Preferably, the positioning assembly comprises: a wire connecting cylinder, the top end of which is fixedly connected to the top surface of the inner wall of the installation box, and the bottom end of which is fixedly connected to the bottom surface of the inner wall of the installation box.

[0013] Preferably, the top end of the wire connecting cylinder is connected to the first through hole, the bottom end of the wire connecting cylinder is connected to the second through hole, and one side of the wire connecting cylinder is fixedly connected to one end of the threaded column.

[0014] Preferably, the outside of the threaded column is slidably inserted into the inside of the movable plate, a positioning plate is provided on one side of the movable plate, the positioning plate is slidably inserted in the strip-shaped through hole, and the strip-shaped through hole is provided on the side of the wire connecting cylinder.

[0015] Preferably, the external thread of the threaded column is connected to the inner ring of the knob.

[0016] Preferably, the elastic component includes: a sleeve, one side of the sleeve is fixedly connected to one side of the inner wall of the installation box, the inner wall of the sleeve is slidably sleeved on the outside of the slider, one end of the slider is fixedly connected to one end of the push spring, and the other end of the push spring is fixedly connected to the inner wall of the sleeve.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model uses a protective component so that the wiring part of the current transformer is enclosed in the installation box, thereby avoiding exposure of the wire core at the wiring part, effectively reducing the risk of electric shock, and at the same time, avoiding short circuit or wire core damage caused by external factors, thereby improving the protection of the current transformer and the circuit. At the same time, the closing process of the sealing cover is also very convenient.

[0019] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the positioning component structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the protection component of the utility model;

[0024] Figure 5 It is an enlarged schematic diagram of point A of the utility model;

[0025] Figure 6 It is a schematic diagram of the structure of the elastic component of the utility model.

[0026] In the figure: 1. elastic component; 11. slider; 12. sleeve; 13. push spring; 2. positioning component; 21. knob; 22. positioning plate; 23. threaded column; 24. strip through hole; 25. wire connecting tube; 26. moving plate; 3. protection component; 31. limit groove; 32. through hole one; 33. installation box; 34. positioning hole; 35. sealing cover; 36. pulling ring; 37. U-shaped reaction frame; 38. pulling rod; 39. reset spring; 310. locking block; 311. square through hole; 312. through hole two; 4. connecting wire; 5. current transformer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6 The utility model provides a technical solution: a current transformer terminal, comprising: an elastic component 1, a positioning component 2 and a protection component 3.

[0029] Furthermore, the positioning component 2 is used to connect and position the connecting wire 4. The use of the positioning component 2 makes it more convenient and quick to connect the wire. At the same time, the connection position of the positioning component 2 and the wire is located inside the protective component 3, avoiding the exposure of the wire core at the wiring part, effectively reducing the risk of electric shock.

[0030] The protection component 3 includes: a mounting box 33, a square through hole 311 is provided on one side of the mounting box 33, the hole wall of the square through hole 311 is slidably sleeved on the outside of the locking block 310, one end of the locking block 310 is fixedly connected to one end of the pull rod 38, the other end of the pull rod 38 is fixedly connected to one side of the pulling ring 36, the outside of the pull rod 38 is slidably inserted into the inside of the U-shaped reaction frame 37, and the two ends of the U-shaped reaction frame 37 are fixedly connected to the position of the square through hole 311 on the side of the mounting box 33. The bottom of the limit groove 31 is provided with two groups of through holes 1 32 for the current transformer wire to pass through, and the bottom of the mounting box 33 is provided with a through hole 2 312 for the connection wire 4 to pass through. One side of the mounting box 33 is hinged to one side of the sealing cover 35, and the other side of the sealing cover 35 is provided with a positioning hole 34, and the hole wall of the positioning hole 34 is slidably connected to one end of the locking block 310. The outer portion of the pull rod 38 is slidably inserted into the inner ring of the reset spring 39 , and both ends of the reset spring 39 are supported between the U-shaped reaction frame 37 and the locking block 310 .

[0031] Furthermore, after the wiring is completed, the sealing cover 35 is closed. During the closing process of the sealing cover 35, the locking block 310 will be pushed to move in the direction of the U-shaped reaction frame 37. At the same time, the locking block 310 compresses the reset spring 39. When the sealing cover 35 closes the positioning hole 34 on its side and aligns it with the square through hole 311, the reset spring 39 pushes the locking block 310 so that the locking block 310 is inserted into the positioning hole 34, so that the sealing cover 35 cannot be opened, and the connecting wire 4, the terminal of the current transformer 5, and the wire connecting tube 25 are enclosed in the installation box 33, thereby avoiding the exposure of the wire core at the wiring part, effectively reducing the risk of electric shock, and at the same time, avoiding short circuit or wire core damage caused by external factors, thereby improving the protection of the current transformer 5 and the circuit. At the same time, the closing process of the sealing cover 35 is also very convenient.

[0032] A limiting groove 31 for installing and limiting the current transformer is provided on the top of the installation box 33 .

[0033] Furthermore, the bottom of the current transformer 5 is located in the limiting groove 31 at the top of the installation box 33, which can prevent the current transformer 5 and the installation box 33 from sliding relative to each other, making the installation of the current transformer 5 more stable.

[0034] The positioning assembly 2 includes: a wire connection cylinder 25, the wire connection cylinder 25 is made of conductive material, the top of the wire connection cylinder 25 is fixedly connected to the top surface of the inner wall of the installation box 33, and the bottom of the wire connection cylinder 25 is fixedly connected to the bottom surface of the inner wall of the installation box 33. The top of the wire connection cylinder 25 is connected to the through hole 1 32, the bottom of the wire connection cylinder 25 is connected to the through hole 2 312, and one side of the wire connection cylinder 25 is fixedly connected to one end of the threaded column 23. The outside of the threaded column 23 is slidably plugged into the inside of the moving plate 26, and a positioning plate 22 is provided on one side of the moving plate 26. The positioning plate 22 is slidably plugged into the bar-shaped through hole 24, and the bar-shaped through hole 24 is provided on the side of the wire connection cylinder 25. The outside of the threaded column 23 is threadedly connected to the inner circle of the knob 21.

[0035] Furthermore, the terminal of the current transformer 5 is passed through the through hole 1 32 at the top of the installation box 33 and inserted into the wire connecting cylinder 25, and then the connecting wire 4 that needs to be connected to the current transformer 5 is passed through the through hole 2 312 at the bottom of the installation box 33 and inserted into the wire connecting cylinder 25. When the connecting wire 4 and the terminal of the current transformer 5 are both inserted into the wire connecting cylinder 25, the knob 21 is turned to move the knob 21 toward the direction of the wire connecting cylinder 25, and the knob 21 pushes the movable plate 26 and the positioning plate 22 to move toward the direction of the wire connecting cylinder 25, so that the positioning plate 22 presses the connecting wire 4 and the terminal of the current transformer 5 to achieve positioning, so that the connecting wire 4 and the terminal of the current transformer 5 cannot be pulled out of the wire connecting cylinder 25, and the connecting wire 4 and the terminal of the current transformer 5 are connected together through the wire connecting cylinder 25. The positioning process only requires turning the knob 21, and there is no need to frequently turn the screws, making wiring more convenient and quick.

[0036] The elastic component 1 includes: a sleeve 12, one side of the sleeve 12 is fixedly connected to one side of the inner wall of the installation box 33, the inner wall of the sleeve 12 is slidably sleeved on the outside of the slider 11, one end of the slider 11 is fixedly connected to one end of the push spring 13, and the other end of the push spring 13 is fixedly connected to the inner wall of the sleeve 12.

[0037] Furthermore, during the closing process of the sealing cover 35, the sealing cover 35 will push the slider 11, so that the slider 11 compresses the push spring 13. When the sealing cover 35 needs to be opened, it is only necessary to pull the pull ring 36 in the direction away from the U-shaped reaction frame 37. The pull ring 36 drives the locking block 310 to move through the pulling rod 38, so that the locking block 310 is pulled out of the positioning hole 34. At the same time, the push spring 13 pushes the slider 11, and the slider 11 pushes the sealing cover 35, so that the sealing cover 35 is opened. In this way, the sealing cover 35 can be opened by only pulling the pull ring 36, which is very quick and convenient for operating the positioning component 2 inside the installation box 33.

[0038] Working principle: When in use, the terminal of the current transformer 5 is passed through the through hole 1 32 at the top of the installation box 33 and inserted into the wire connection barrel 25. At the same time, the bottom of the current transformer 5 is located in the limit groove 31 at the top of the installation box 33, which can prevent the current transformer 5 and the installation box 33 from sliding relative to each other, making the installation of the current transformer 5 more stable. Then, the connecting wire 4 that needs to be connected to the current transformer 5 is passed through the through hole 2 312 at the bottom of the installation box 33 and inserted into the wire connection barrel 25. When the connecting wire 4 and the terminal of the current transformer 5 are inserted into the wire connection barrel, the connecting wire 4 and the terminal of the current transformer 5 are inserted into the wire connection barrel. After connecting the tube 25, turn the knob 21 to move it toward the direction of the wire connecting tube 25, and the knob 21 pushes the movable plate 26 and the positioning plate 22 to move toward the direction of the wire connecting tube 25, so that the positioning plate 22 presses the connecting wire 4 and the terminal of the current transformer 5 to achieve positioning, so that the connecting wire 4 and the terminal of the current transformer 5 cannot be pulled out of the wire connecting tube 25, and the connecting wire 4 and the terminal of the current transformer 5 are connected together through the wire connecting tube 25. During the positioning process, just turn the knob 21, and there is no need to frequently turn the screws, so the wiring is more convenient and quick.

[0039] After the wiring is completed, the sealing cover 35 is closed. During the closing process of the sealing cover 35, the locking block 310 will be pushed to move in the direction of the U-shaped reaction frame 37. At the same time, the locking block 310 compresses the reset spring 39. When the sealing cover 35 closes the positioning hole 34 on its side and aligns it with the square through hole 311, the reset spring 39 pushes the locking block 310 so that the locking block 310 is inserted into the positioning hole 34, so that the sealing cover 35 cannot be opened, and the connecting wire 4, the terminal of the current transformer 5, and the wire connecting tube 25 are enclosed in the installation box 33, thereby avoiding the exposure of the wire core at the wiring part, effectively reducing the risk of electric shock, and at the same time, it also avoids short circuit or wire core damage caused by external factors, thereby improving the protection of the current transformer 5 and the circuit. At the same time, the closing process of the sealing cover 35 is also very convenient. When the sealing cover 35 is closed, the sealing cover 35 will push the slider 11, so that the slider 11 compresses the push spring 13. When the sealing cover 35 needs to be opened, it is only necessary to pull the pull ring 36 in the direction away from the U-shaped reaction frame 37. The pull ring 36 drives the locking block 310 to move through the pulling rod 38, so that the locking block 310 is withdrawn from the positioning hole 34. At the same time, the push spring 13 pushes the slider 11, and the slider 11 pushes the sealing cover 35, so that the sealing cover 35 is opened. In this way, the sealing cover 35 can be opened by only pulling the pull ring 36, which is very quick and convenient for operating the positioning component 2 inside the installation box 33.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A current transformer terminal, characterized in that: include: A protective component (3) for preventing the connection wires from leaking out; Two groups of positioning components (2) for positioning the connecting wires are provided inside the protection component (3), and an elastic component (1) for facilitating the opening of the protection component (3) is provided on one side inside the protection component (3); The protection component (3) comprises: a mounting box (33), a square through hole (311) is provided on one side of the mounting box (33), the hole wall of the square through hole (311) is slidably sleeved on the outside of the locking block (310), one end of the locking block (310) is fixedly connected to one end of a pull rod (38), the other end of the pull rod (38) is fixedly connected to one side of a pulling ring (36), the outside of the pull rod (38) is slidably inserted into the inside of a U-shaped reaction frame (37), and the two ends of the U-shaped reaction frame (37) are fixedly connected to the position of the square through hole (311) on the side of the mounting box (33).

2. A current transformer terminal according to claim 1, characterized in that: The outside of the pulling rod (38) is slidably inserted into the inner ring of the reset spring (39), and the two ends of the reset spring (39) are supported between the U-shaped reaction frame (37) and the locking block (310).

3. A current transformer terminal according to claim 1, characterized in that: The top of the installation box (33) is provided with a limiting groove (31) for installing and limiting the current transformer.

4. A current transformer terminal according to claim 3, characterized in that: The bottom of the limiting groove (31) is provided with two groups of through holes (32) for the current transformer wire to pass through, and the bottom of the installation box (33) is provided with a through hole (312) for the connecting wire to pass through.

5. A current transformer terminal according to claim 3, characterized in that: One side of the installation box (33) is hinged to one side of the sealing cover (35), and the other side of the sealing cover (35) is provided with a positioning hole (34), and the hole wall of the positioning hole (34) is slidably connected to one end of the locking block (310).

6. A current transformer terminal according to claim 4, characterized in that: The positioning assembly (2) comprises: a wire connection cylinder (25), the top end of the wire connection cylinder (25) being fixedly connected to the top surface of the inner wall of the installation box (33), and the bottom end of the wire connection cylinder (25) being fixedly connected to the bottom surface of the inner wall of the installation box (33).

7. A current transformer terminal according to claim 6, characterized in that: The top end of the wire connection cylinder (25) is connected to the first through hole (32), the bottom end of the wire connection cylinder (25) is connected to the second through hole (312), and one side of the wire connection cylinder (25) is fixedly connected to one end of the threaded column (23).

8. A current transformer terminal according to claim 7, characterized in that: The outside of the threaded column (23) is slidably inserted into the inside of the movable plate (26), a positioning plate (22) is provided on one side of the movable plate (26), and the positioning plate (22) is slidably inserted into the strip-shaped through hole (24), and the strip-shaped through hole (24) is provided on the side of the wire connecting tube (25).

9. A current transformer terminal according to claim 7, characterized in that: The external thread of the threaded column (23) is connected to the inner circle of the knob (21).

10. A current transformer terminal according to claim 1, characterized in that: The elastic component (1) comprises: a sleeve (12), one side of the sleeve (12) is fixedly connected to one side of the inner wall of the installation box (33), the inner wall of the sleeve (12) is slidably sleeved on the outside of the slider (11), one end of the slider (11) is fixedly connected to one end of the push spring (13), and the other end of the push spring (13) is fixedly connected to the inner wall of the sleeve (12).

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