Current transformer with protection structure

Abstract

The utility model discloses a current transformer with a protection structure, which comprises a current transformer main body, two wiring terminals are arranged on the current transformer main body, and the protection structure is arranged on the current transformer main body. The protection structure comprises a protection plate of which one end is connected with the current transformer and a clamping assembly which is arranged on the inner surface of the protection plate and is used for clamping a cable; compared with the prior art, the utility model has the following benefits: 1) the wire is clamped by the protection plate and the clamping plate, and the stress position of the wire when the wire is pulled is changed, so that the wiring part is effectively prevented from being snapped; and 2) after the wire is clamped by the protection plate and the clamping plate, the protection plate can be rotated downwards to form a cover body covering the wiring terminal, so that the wire can be clamped by the clamping assembly, the connection part of the wire and the wiring terminal is prevented from being broken when the wire is pulled, and the wiring terminal is prevented from being damaged. And a simple front dustproof protection effect can also be achieved.

Description

Technical Field

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

[0002] When the current transformer is in use, the main wire group is wound on the transformer for several turns and then passes through the center hole of the transformer. When the current in the main wire group passes through, electromagnetic induction will occur between the coil in the current transformer, converting the large primary current in the main wire group into a small secondary current in the transformer. By detecting the small secondary current, the current size inside the main wire group can be detected.

[0003] The terminals of existing current transformers, such as the utility model patent with application number 202321812296.8, are usually connected by bolts. When the terminals are connected by bolts, it is necessary to first peel off the outer skin of the wire, then wrap the peeled part of the wire around the bolt, and then lock the wire by turning the bolt.

[0004] However, since the outer sheath of the wire has been peeled off, the connecting part between the wire and the bolt is very thin. During operation, it is easy to accidentally pull the connecting end of the wire and the terminal off, and it is easy to cause the bolt to loosen when touching the wire, resulting in poor contact between the wire and the terminal. Therefore, the purpose of this application is to propose a current transformer with a protective structure to solve the above problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a current transformer with a protection structure to solve the above problem.

[0006] To achieve the above-mentioned purpose, the utility model provides a current transformer with a protective structure, including a current transformer body, two wiring terminals are provided on the current transformer body, a protective structure is provided on the current transformer body, and the protective structure includes a protective plate connected to the current transformer body at one end and a clamping assembly arranged on the surface of the protective plate for clamping a cable.

[0007] Preferably, the clamping assembly includes a clamping plate slidably disposed on the inner surface of the protective plate and a locking member connected between the clamping plate and the protective plate.

[0008] Preferably, a slide groove is embedded in the inner surface of the protective plate, and a slider that slidably cooperates with the slide groove is integrally formed on the surface of the clamping plate. The locking member is a bolt that passes through the protective plate and is threadedly connected to the slider.

[0009] Preferably, the inner surfaces of the protective plate and the clamping plate are embedded with clamping grooves, and rubber blocks are fixed to the inner walls of the clamping grooves.

[0010] Preferably, the protective plate is fixedly connected to the current transformer body.

[0011] The protection plate is rotatably connected to the current transformer body.

[0012] Preferably, baffles are integrally formed on both sides of the protective plate.

[0013] Compared with the prior art, the utility model has the following advantages: 1) the utility model clamps the wires by means of the protective plate and the clamping plate, thereby changing the force position of the wires when they are pulled, thereby effectively preventing the connection from being broken; 2) after the utility model clamps the wires by means of the protective plate and the clamping plate, the protective plate can be rotated downward to form a cover body covering the outside of the terminal block, so that not only can the wires be clamped by the clamping assembly to prevent the wires from being broken at the connection with the terminal block when they are pulled, but also a simple front dust protection function can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the second embodiment of the utility model.

[0016] Figure 2 This is another three-dimensional structural schematic diagram of the second embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the clamping assembly of the utility model.

[0019] In the figure: 10, current transformer body; 20, terminal; 30, protection structure; 31, protection plate; 311, slide groove; 32, clamping assembly; 321, clamping plate; 322, locking piece; 323, slider; 324, clamping groove; 33, baffle. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 The specific implementation modes of the present utility model are further described in detail.

[0021] Embodiment 1

[0022] Embodiment 1 provides a current transformer with a protective structure, including a current transformer body 10, on which two wiring terminals 20 are provided, and the two wiring terminals 20 are used to connect to a current detection device. The above structure is an existing current transformer structure, so in this embodiment, no detailed description is given. The key improvements of this embodiment are:

[0023] A protective structure 30 is provided on the current transformer body 10, and the protective structure 30 includes a protective plate 31 connected to the current transformer body 10 at one end and a clamping assembly 32 arranged on the surface of the protective plate 31 for clamping the cable. In this embodiment, the protective plate 31 is fixedly connected to the current transformer body 10. Through the setting of the clamping assembly 32, when wiring, the wire is first connected to the terminal 20, and then the wire is clamped by the clamping assembly 32. In this way, when the wire is accidentally pulled, the force position of the wire is no longer the position of the connection with the terminal 20, thereby effectively preventing the wire from breaking. Moreover, since the force position of the wire becomes the position of the clamping assembly 32 when the wire is accidentally pulled, the terminal 20 will not become loose, effectively preventing the problem of poor contact.

[0024] A specific embodiment of the clamping assembly 32 is as follows:

[0025] The clamping assembly 32 includes a clamping plate 321 slidably arranged on the inner surface of the protective plate 31 and a locking member 322 connected between the clamping plate 321 and the protective plate 31. When connecting, the wire is passed through the gap between the clamping plate 321 and the protective plate 31. After the connection with the terminal block 20 is completed, the clamping plate 321 and the protective plate 31 are locked by the locking member 322, and the wire is clamped by the clamping plate 321 and the protective plate 31.

[0026] Specifically, a slide groove 311 is embedded in the inner surface of the protective plate 31, and a slider 323 that slides with the slide groove 311 is integrally formed on the surface of the clamping plate 321. The locking piece 322 is a bolt, which passes through the protective plate 31 and is threadedly connected to the slider 323. By turning the bolt, the clamping plate 321 and the protective plate 31 can be driven to approach each other and clamp the wires, which is easy to operate.

[0027] In order to better limit the position of the wires, the inner surfaces of the protective plate 31 and the clamping plate 321 are embedded with clamping grooves 324 , and the inner walls of the clamping grooves 324 are fixed with rubber blocks.

[0028] Embodiment 2

[0029] Embodiment 2 provides a current transformer with a protective structure, which is roughly the same as the structure of embodiment 1, except that: the protective plate 31 is rotatably connected to the current transformer body 10, and baffles 33 are integrally formed on both sides of the protective plate 31. Specifically, two fixed blocks are fixed to the surface of the current transformer body 10, and the fixed blocks are fixed with an axis. The protective plate 31 is connected to the current transformer body 10 through the axis and can be rotated in the vertical direction. In this way, after clamping the cable, the protective plate 31 can be rotated downward. After the protective plate 31 is rotated downward, it forms a cover body covering the outside of the terminal 20 together with the baffles 33 on both sides. In this way, not only can the clamping assembly 32 clamp the wire to prevent the wire from being broken at the connection with the terminal 20 when the wire is pulled, but it can also play a simple front dust protection role.

[0030] A current transformer with a protection structure, the working principle is as follows:

[0031] When wiring through the terminal block 20, first the head of the wire is stripped, and then the wire is passed through the protective plate 31 and the clamping plate 321. After the wire is connected to the terminal block 20, the wire is clamped by the protective plate 31 and the clamping plate 321, thereby changing the force position of the wire when it is pulled to prevent the connection from being broken. In addition, in the second embodiment, after the wire is clamped by the protective plate 31 and the clamping plate 321, the protective plate 31 can also be rotated downward. After the protective plate 31 is rotated downward, it forms a cover body covering the outside of the terminal block 20 together with the baffles 33 on both sides. In this way, not only can the wire be clamped by the clamping assembly 32 to prevent the wire from being broken at the connection with the terminal block 20 when it is pulled, but it can also play a simple front dust protection role.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A current transformer with a protective structure, comprising a current transformer body (10), wherein the current transformer body (10) is provided with two connection terminals (20), characterized in that: A protective structure (30) is provided on the current transformer body (10), and the protective structure (30) comprises a protective plate (31) having one end connected to the current transformer body (10) and a clamping assembly (32) arranged on the surface of the protective plate (31) for clamping a cable.

2. A current transformer with a protection structure according to claim 1, characterized in that: The clamping assembly (32) comprises a clamping plate (321) slidably arranged on the inner surface of the protective plate (31) and a locking member (322) connected between the clamping plate (321) and the protective plate (31).

3. A current transformer with a protection structure according to claim 2, characterized in that: The inner surface of the protective plate (31) is embedded with a slide groove (311), the surface of the clamping plate (321) is integrally formed with a slider (323) that slidably cooperates with the slide groove (311), and the locking member (322) is a bolt that passes through the protective plate (31) and is threadedly connected to the slider (323).

4. A current transformer with a protection structure according to claim 3, characterized in that: The inner surfaces of the protective plate (31) and the clamping plate (321) are embedded with a clamping groove (324), and a rubber block is fixed to the inner wall of the clamping groove (324).

5. The current transformer with a protection structure according to claim 1, characterized in that: The protection plate (31) is fixedly connected to the current transformer body (10).

6. The current transformer with a protection structure according to claim 1, characterized in that: The protection plate (31) is rotatably connected to the current transformer body (10).

7. A current transformer with a protection structure according to claim 6, characterized in that: Baffles (33) are integrally formed on both sides of the protection plate (31).

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