Cable adjustable stabilizing structure for current transformers

Abstract

This utility model discloses an adjustable and stable cable structure for a current transformer, comprising: a transformer body; a current-taking needle on one side of the transformer body; a pre-support member on the rear side of the transformer body; a clamping member whose bottom end movably penetrates from the top to the bottom of the transformer body; a through hole on one side wall of the clamping member; several positioning grooves on one end of the clamping member; and an insertion hole on one side of the top of the transformer body, with a positioning plate disposed within the cavity of the insertion hole. By incorporating the clamping member, this utility model allows the transformer body to be hung on the cable via the pre-support member. The clamping member can then be moved downwards to engage with two rubber blocks to clamp the cable, effectively "clamping" it in place. At this point, one end of the clamping member is inserted into the insertion hole, and under the action of a spring, the positioning plate enters the corresponding positioning groove.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, and in particular to an adjustable and stable cable structure for current transformers. Background Technology

[0002] A split-type current transformer is an instrument used to measure alternating current. Its core feature is that its structure can be disassembled into two halves that can be opened and closed. It can be directly installed on the cable without cutting the cable. It is widely used in current monitoring and protection in power systems, industrial equipment, smart homes and other fields. Some current transformers are composed of structures including current-taking needles, pre-fixing devices and clamping blocks.

[0003] The existing utility model patent with publication number CN215578170U discloses an openable piercing current transformer. "When testing a cable, the cable is first placed between the lower and upper housings. Then, the upper housing is rotated to engage with the lower housing. Next, the pressure screw is rotated, pressing the cable to fix it to the clamp and the surface of the pressure screw. Then, the insulating cap on the piercing screw is rotated, causing the piercing screw to move the needle, which slides towards the cable insulation layer and pierces it. By setting up a piercing device, and rotating the piercing screw to move the needle to slide and pierce the cable insulation layer, the test is completed." It can also adapt to different cable sizes, avoiding the situation of lost parts and extremely complicated disassembly and assembly processes that occur when using traditional equipment, making the device very practical. Although it solves the problem that "traditional equipment is usually split and has a relatively complex structure, requiring the disassembly and assembly of a large number of parts when installing cables, and is prone to losing parts during use, resulting in complicated and labor-intensive disassembly and assembly processes", the clamping blocks currently used to fix cables usually squeeze the cables by moving laterally, and the fixing force mainly comes from lateral friction. In a vibration environment, the cables are prone to loosening due to vertical displacement. Therefore, an adjustable and stable cable structure for current transformers is proposed. Utility Model Content

[0004] Therefore, it is necessary to provide an adjustable and stable cable structure for current transformers to address the aforementioned technical problems.

[0005] In order to solve the above-mentioned technical problems, the present invention solves the problem that cables are prone to loosening due to vertical displacement through the following technical solution.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The cable adjustment and stabilization structure of the current transformer includes:

[0008] The transformer body has a current-taking needle on one side and a pre-support member on the rear side.

[0009] The clamping component has its bottom end movably extending through the top and bottom of the transformer body. A through hole is provided on one side wall of the clamping component, and several positioning grooves are provided at one end of the clamping component. An insertion hole is provided on one side of the top of the transformer body, and a positioning piece is provided in the inner cavity of the insertion hole.

[0010] As a preferred embodiment of the adjustable and stable cable structure of the current transformer provided by this utility model, a rubber block is fixedly connected to the middle of the face opposite to the transformer body of the clamping member, and an internal groove is provided on one side of the inside of the transformer body.

[0011] As a preferred embodiment of the cable adjustable and stable structure of the current transformer provided by this utility model, one side wall of the positioning piece slides through the inner wall of the insertion hole to the inner cavity of the built-in groove, and is fixedly connected to a moving block.

[0012] In a preferred embodiment of the adjustable and stable cable structure of the current transformer provided by this utility model, the moving block is slidably connected to the inner cavity of the built-in groove, and a pair of springs are connected between the moving block and the inner wall of the built-in groove.

[0013] As a preferred embodiment of the cable adjustable and stable structure of the current transformer provided by this utility model, a fixing rod is fixedly connected to one side wall of the moving block, one end of the fixing rod slides through the inner wall of the built-in groove to the outside of the transformer body, and is fixedly connected to a pull block.

[0014] In a preferred embodiment of the adjustable and stable cable structure of the current transformer provided by this utility model, the other side wall of the positioning piece is placed in the inner cavity of the positioning groove, and the corner of the other side wall of the positioning piece is a chamfered edge.

[0015] As a preferred embodiment of the adjustable and stable cable structure of the current transformer provided by this utility model, a sliding hole is provided at the bottom of one side wall of the clamping member, and a support block is fixedly connected to one side of the bottom end of the transformer body.

[0016] As a preferred embodiment of the adjustable and stable cable structure of the current transformer provided by this utility model, the inner cavity of the sliding hole is slidably connected to a movable block, and the support block is U-shaped.

[0017] As a preferred embodiment of the cable adjustable and stable structure of the current transformer provided by this utility model, a fixing strip is fixedly connected to one side wall of the movable block, and the other side of the sliding hole is placed in the inner cavity of the support block.

[0018] As a preferred embodiment of the adjustable and stable cable structure of the current transformer provided by this utility model, the perforation corresponds to the position of the power-taking needle, and its inner cavity allows one end of the power-taking needle to pass through.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The adjustable and stable cable structure of the current transformer provided by this utility model, by setting a clamping member, allows the clamping member to be moved downward after the transformer body is hung on the cable by the pre-support member. It cooperates with two rubber blocks to clamp the cable, "clamping" the cable in the middle. At this time, one end of the clamping member is inserted into the insertion hole. Under the action of the spring, the positioning plate enters the corresponding positioning groove. The operation is simple and realizes the fixation of the clamping member, so that the device is firmly fixed on the cable, ensuring the stability when the power-taking needle penetrates the cable to take power.

[0021] The adjustable and stable cable structure of the current transformer provided by this utility model, by setting a support block and a movable block, allows the movable block to be moved before the device is pre-fixed to the cable by the pre-support member, so that one side of the movable block is placed in the inner cavity of the support block, thereby supporting the clamping member and preventing the clamping member from blocking the opening of the pre-support member, which would cause difficulties in installation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This invention provides a structural schematic diagram from the right side.

[0025] Figure 3 A bottom-view structural diagram is provided for this utility model;

[0026] Figure 4 This utility model provides a structural schematic diagram showing the disassembly of the transformer body and the clamping component;

[0027] Figure 5 A partial cross-sectional view of the main body of the current transformer is provided for this utility model;

[0028] Figure 6 A structural schematic diagram of the clamping component provided for this utility model.

[0029] The markings in the diagram are explained as follows:

[0030] 1. Current transformer body; 2. Current-taking needle; 3. Pre-support component; 4. Clamping component; 5. Through hole; 6. Positioning groove; 7. Insertion hole; 8. Positioning piece; 9. Rubber block; 10. Internal groove; 11. Moving block; 12. Spring; 13. Fixing rod; 14. Pull block; 15. Sliding hole; 16. Support block; 17. Movable block; 18. Fixing strip. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention. Example

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The adjustable and stable cable structure of the current transformer includes a transformer body 1. One side of the transformer body 1 has a current-taking needle 2 for piercing the cable insulation layer and contacting the conductor to obtain a current signal. The rear side of the transformer body 1 has a pre-support member 3, which is a preliminary positioning device for installing the transformer body 1 on the cable. This is existing technology and will not be described in detail.

[0033] The clamping member 4 is bent and has a hook-shaped structure. By moving vertically from top to bottom, the geometry of the hook-shaped structure applies vertical clamping force to the cable. It works with the rubber block 9 to form a wrapping fixation. The bottom end of the clamping member 4 moves through the top and bottom of the transformer body 1. A through hole 5 is opened on one side wall of the clamping member 4 for the current-taking needle 2 to pass through, ensuring that the needle can penetrate into the cable conductor. Several positioning grooves 6 are opened at one end of the clamping member 4. They are equally spaced and work with the positioning plate 8 to achieve graded locking of the clamping member position. A insertion hole 7 is opened on one side of the top of the transformer body 1 for one end of the clamping member 4 to be inserted. The inner cavity of the insertion hole 7 is provided with the positioning plate 8. The other side wall of the positioning plate 8 is placed in the inner cavity of the positioning groove 6. The corner of the other side wall of the positioning plate 8 is chamfered. Through the chamfered edge design, it works with the spring 12 to automatically slide into the positioning groove 6 when the clamping member 4 is pressed down, and locking is achieved without manual operation.

[0034] Preferably, a rubber block 9 is fixedly connected to the middle of the opposite side of the clamping member 4 and the transformer body 1. The high coefficient of friction of the rubber enhances the clamping force on the cable and prevents horizontal sliding. An internal groove 10 is provided on one side of the transformer body 1 to accommodate the moving block 11 and the spring 12. One side wall of the positioning piece 8 slides through the inner wall of the socket 7 to the inner cavity of the internal groove 10 and is fixedly connected to the moving block 11. The moving block 11 is slidably connected to the inner cavity of the internal groove 10. A pair of springs 12 are connected between the moving block 11 and the inner wall of the internal groove 10 to provide a reset elastic force and maintain the locked state of the positioning piece 8 and the positioning groove 6.

[0035] Preferably, a fixing rod 13 is fixedly connected to one side wall of the movable block 11. One end of the fixing rod 13 slides through the inner wall of the built-in groove 10 to the outside of the transformer body 1, and is fixedly connected to a pull block 14 to unlock the positioning piece 8.

[0036] Preferably, a sliding hole 15 is provided at the bottom of one side wall of the clamping member 4. A support block 16 is fixedly connected to one side of the bottom end of the transformer body 1. A movable block 17 is slidably connected to the inner cavity of the sliding hole 15. The support block 16 has a U-shaped design. A fixing strip 18 is fixedly connected to one side wall of the movable block 17. The other side of the sliding hole 15 is placed in the inner cavity of the support block 16. The position of the through hole 5 corresponds to that of the power-taking needle 2, and its inner cavity allows one end of the power-taking needle 2 to pass through. The movable block 17 can slide laterally in the sliding hole 15. Before installation, one side of it is pushed into the inner cavity of the support block 16 to temporarily support the clamping member 4 and prevent it from sagging and interfering with the cable sleeve.

[0037] The usage process of the adjustable and stable cable structure of the current transformer provided by this utility model is as follows: First, when it is necessary to monitor the cable, the operator uses the pre-support 3 to pre-install the device on the cable. Then, the operator pulls the fixing bar 18 to move the movable block 17 to one side, disengaging it from the inner cavity of the support block 16, thus releasing the restriction on the clamping member 4. The clamping member 4 is then pressed down, allowing one end of the clamping member 4 to enter the inner cavity of the socket 7. As the clamping member 4 continues to move downward, the positioning plate 8 is continuously retracted under force, and then enters the inner cavity of the positioning groove 6 at different heights through the spring 12, until the clamping member 4 is firmly fixed to the cable by the rubber block 9. Then, the power-taking needle 2 is used to monitor the power taking from the cable. When it is necessary to remove the device, the operator can move the pulling block 14 to move the positioning plate 8 to one side, disengaging it from the inner cavity of the current positioning groove 6, thus releasing the restriction on the clamping member 4. Then, the clamping member 4 is moved upward to release the positioning of the cable, and then the pre-support 3 is removed.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An adjustable and stable cable structure for a current transformer, characterized in that, It includes: The transformer body (1) has a power-taking needle (2) on one side and a pre-support member (3) on the rear side of the transformer body (1). The clamping member (4) has its bottom end movably penetrating through the top end of the transformer body (1) to its bottom. A through hole (5) is provided on one side wall of the clamping member (4). Several positioning grooves (6) are provided at one end of the clamping member (4). An insertion hole (7) is provided on one side of the top end of the transformer body (1). A positioning piece (8) is provided in the inner cavity of the insertion hole (7).

2. The adjustable and stable cable structure of the current transformer according to claim 1, characterized in that, The clamping member (4) and the transformer body (1) are both fixedly connected to a rubber block (9) at the middle of their opposite sides. An internal groove (10) is provided on one side of the transformer body (1).

3. The adjustable and stable cable structure of the current transformer according to claim 1, characterized in that, The side wall of the positioning piece (8) slides through the inner wall of the insertion hole (7) to the inner cavity of the built-in groove (10), and is fixedly connected to the moving block (11).

4. The adjustable and stable cable structure of the current transformer according to claim 3, characterized in that, The movable block (11) is slidably connected to the inner cavity of the built-in groove (10), and a pair of springs (12) are connected between the movable block (11) and the inner wall of the built-in groove (10).

5. The adjustable and stable cable structure of the current transformer according to claim 3, characterized in that, A fixed rod (13) is fixedly connected to one side wall of the movable block (11). One end of the fixed rod (13) slides through the inner wall of the built-in groove (10) to the outside of the transformer body (1) and is fixedly connected to a pull block (14).

6. The adjustable and stable cable structure of the current transformer according to claim 1, characterized in that, The other side wall of the positioning piece (8) is placed in the inner cavity of the positioning groove (6), and the corner of the other side wall of the positioning piece (8) is a chamfered edge.

7. The adjustable and stable cable structure of the current transformer according to claim 1, characterized in that, A sliding hole (15) is provided at the bottom of one side wall of the clamping member (4), and a support block (16) is fixedly connected to one side of the bottom end of the transformer body (1).

8. The adjustable and stable cable structure of the current transformer according to claim 7, characterized in that, The inner cavity of the sliding hole (15) is slidably connected to a movable block (17), and the support block (16) is U-shaped.

9. The adjustable and stable cable structure of the current transformer according to claim 8, characterized in that, A fixing strip (18) is fixedly connected to one side wall of the movable block (17), and the other side of the sliding hole (15) is placed in the inner cavity of the support block (16).

10. The adjustable and stable cable structure of the current transformer according to claim 1, characterized in that, The perforation (5) corresponds to the position of the electro-acquiring needle (2), and its inner cavity allows one end of the electro-acquiring needle (2) to pass through.

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