An open-type current transformer that is easy to disassemble

Abstract

The utility model relates to an open-type current transformer that is easy to disassemble, comprising a base and a pressing block, wherein the pressing block is arc-shaped and has connecting plates at both ends, an arc-shaped groove is provided at the center of the top surface of the pressing block, and the two ends of the base extend toward both sides to form mounting blocks, the top surface of the mounting block is provided with a slot, and a locking assembly is provided inside the slot, the bottom surfaces of the two connecting plates are respectively attached to the top surfaces of the two mounting blocks to form a complete circular through hole in the center, and the connecting plate part extends into the slot and is clamped and fixed with the locking assembly; the application is improved based on the existing current transformer structure, and a chuck structure with a self-locking function is used to assist the connection between the two, which not only effectively avoids the separation of the two due to external impact or extrusion, but also is simple to operate, and even if it is opened and closed repeatedly, it will not affect the connection effect, and the self-locking effect can make the structural connection more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to an open-type current transformer which is easy to disassemble. 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] Commonly used open-type current transformers are generally fixed by screws when locked. This locking and fixing is cumbersome to operate when opening and closing. Therefore, in order to improve convenience, the existing Chinese patent with publication number CN219303436U proposes an open-type current transformer that is easy to disassemble. In this device, the base and the pressing block are fastened and fixed by a spring and a movable block, so that it is convenient for the staff to open or close.

[0004] In the above structure, the movable block is exposed on the side wall of the base. Although it can be expanded outward by a spring, the spring is elastic and it is very easy for the movable block to shrink inward due to external collision or extrusion, which eventually leads to the automatic separation of the base and the pressing block, affecting normal use. Utility Model Content

[0005] Based on the above description, the utility model provides an open-type current transformer that is easy to disassemble, so as to solve the shortcomings of the existing current transformer, that is, the buckling structure is unstable and the connection is easily separated due to external collision or extrusion, thus affecting normal use.

[0006] The utility model is realized through the following technical solutions:

[0007] A disassembled open-type current transformer comprises a base and a pressing block, wherein the pressing block is arc-shaped and has connecting plates at both ends, an arc-shaped groove is provided at the center of the top surface of the pressing block, and the two ends of the base extend toward both sides to form mounting blocks, the top surface of the mounting block is provided with a slot, and a locking assembly is provided inside the slot, the bottom surfaces of the two connecting plates are respectively attached to the top surfaces of the two mounting blocks to form a complete circular through hole in the center, and the connecting plate portion extends into the slot and is fixed with the locking assembly.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the inner portion of the mounting block is hollow, and the slot extends downward and communicates with the hollow portion of the mounting block. The side walls of the hollow portion of the mounting block extend outward to form a plurality of limiting grooves, which are arranged in a circular array with the slot as the center.

[0010] Furthermore, the locking assembly includes a plurality of clamping plates slidably installed inside the limit grooves, an adjustment disk is arranged below the clamping plates, the bottom of the adjustment disk is fixedly connected to the inner bottom surface of the mounting block through a bearing seat, and an adjustment handle is vertically arranged at the center of the bottom surface of the adjustment disk, the adjustment handle extends vertically downward to the outside of the mounting block and is arranged flush with the surface of the mounting block.

[0011] Furthermore, the top surface of the adjustment disk is also provided with a spiral groove which is gradually opened from the center to the outside, and the bottom of the clamping plate extends vertically downward and is movably inserted in the groove.

[0012] Furthermore, the extension parts on the bottom surfaces of both ends of the pressing block form a hemispherical clamping part, which is vertically inserted into the slot, and the clamping plate is arranged in an arc shape on one side toward the center and fits tightly with the side wall of the clamping part.

[0013] Furthermore, a hexagonal hole is provided at the center of the end surface of the outward end of the adjusting handle.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0015] 1. The present application is based on the improvement of the existing current transformer structure, and adopts a chuck structure with a self-locking function to assist in connecting the two. It not only effectively avoids the separation of the two due to external impact or extrusion, but also is simple to operate. Even if it is opened and closed repeatedly, it will not affect the connection effect, and the self-locking effect can make the structural connection more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the base and the pressing block in this embodiment;

[0017] Figure 2 This is a schematic diagram of the structure of the base and the adjustment handle in this embodiment;

[0018] Figure 3 This is a schematic diagram of the internal structure of the mounting block in this embodiment;

[0019] Figure 4 Schematic diagram of the structure of the card board in this embodiment;

[0020] Among them: 1. base; 2. pressing block; 21. clamping part; 3. mounting block; 31. slot; 32. limit slot; 4. locking assembly; 41. adjusting disk; 42. clamping plate; 43. adjusting handle. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0023] Combination Figure 1-4 As shown, an open-type current transformer that is easy to disassemble comprises:

[0024] The base 1 is the bottom support of the device, and a mounting block 3 is connected to the bottom of the base 1 by bolts. The four corners of the mounting block 3 are respectively provided with bolt holes for connecting and fixing with a wall or other device housing;

[0025] The pressing block 2 is arranged at the bottom of the base 1, and an arc-shaped groove is arranged on the side opposite to the base 1, thereby forming a complete circular through hole, and the bottoms of both ends of the pressing block 2 extend downward and are inserted into the base 1 to be locked and fixed;

[0026] The locking assembly 4 is arranged inside the base 1 and located at the connection between the base 1 and the pressing block 2. The two are locked and fixed by snapping, and at the same time have a self-locking effect.

[0027] Specifically, mounting blocks 3 are extended upward at both ends of the base 1, and the top surface of the mounting block 3 is recessed downward to form a slot 31. The inner portion of the mounting block 3 is hollow, and the slot 31 is connected to the hollow portion. At the same time, a plurality of limiting grooves 32 are formed on the inner side wall of the slot 31, so that they are arranged in a circular array around the center of the slot 31.

[0028] The locking assembly 4 includes an adjusting disk 41 arranged in the hollow part. The bottom of the adjusting disk 41 is fixedly connected to the inner bottom surface of the mounting block 3 through a bearing seat, so that it can be flexibly rotated inside the mounting block 3. At the same time, a clamping plate 42 is movably installed inside each limiting groove 32, and the clamping plate 42 is arranged around the top of the adjusting disk 41.

[0029] The top surface of the adjustment disk 41 is also provided with a groove that is gradually opened from the center to the outside. The bottom of each clamping plate 42 partially extends downward and is inserted into the groove. Therefore, when the adjustment disk 41 rotates, the spiral groove inner wall can be used to force all the clamping plates 42 to move toward the center or away from the center to the four sides, thereby forming a locking or loosening effect.

[0030] At the same time, since the clamping portion 21 is set to be hemispherical, the clamping plate 42 should set the side facing the center of the slot 31 to be an arc surface so that it can fit on the arc-shaped outer wall of the hemispherical shape, and at the same time, the top part of the structure extends to the top surface of the hemispherical clamping portion 21, for example Figure 4 shown.

[0031] Based on the above structure, in this embodiment, the plurality of clamping plates 42 can be forced to cooperate with each other by rotating the adjusting disk 41, so that the clamping portion 21 can be clamped and fixed by the curved side wall. This chuck structure is self-locking when locked, which not only effectively improves the stability of the connection between the base 1 and the pressing block 2, but also makes the operation more convenient.

[0032] In order to facilitate the operation of the adjustment disk 41, in the present embodiment, an adjustment handle 43 is vertically provided at the center of the bottom surface of the adjustment disk 41, and is extended downward to the bottom surface of the mounting block 3, and the end surface of the bottom end is arranged flush with the bottom surface of the mounting block 3, so that the adjustment handle 43 is built-in and not easy to be touched by mistake, and at the same time, a hexagonal hole is provided at the center of the end surface of the bottom end thereof, so as to facilitate the adjustment operation by means of a hexagonal wrench.

[0033] Based on the above-mentioned adjustment structure, the present embodiment can further enhance its stability, that is, a circle of worm gear teeth is provided on the bottom surface of the adjustment disk 41, and a worm is provided on one side of the worm gear teeth, and the two ends of the worm are respectively movably connected to the inner wall of the mounting block 3, and one end of the worm is extended to the side wall of the mounting block 3, and a hexagonal hole is also provided on the end surface. In this way, the stability of the adjustment disk 41 can be further enhanced through the self-locking structure of the worm gear, and the reversal of the adjustment disk 41 caused by factors such as vibration can be effectively avoided, thereby causing the clamping part to loosen.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the technical solution of the embodiments of the utility model.

Claims

1. An open-type current transformer that is easy to disassemble, characterized in that: The invention comprises a base (1) and a pressing block (2), wherein the pressing block (2) is arc-shaped and has connecting plates at both ends, an arc-shaped groove is provided at the center of the top surface of the pressing block (2), and the two ends of the base (1) extend toward both sides to form mounting blocks (3), the top surface of the mounting block (3) is provided with a slot (31), and a locking assembly (4) is provided inside the slot (31), the bottom surfaces of the two connecting plates are respectively attached to the top surfaces of the two mounting blocks (3) to form a complete circular through hole in the center, and the connecting plate part extends into the slot (31) and is fixedly connected to the locking assembly (4).

2. According to the open-type current transformer that is easy to disassemble as described in claim 1, it is characterized in that: The inner part of the mounting block (3) is hollow, and the slot (31) extends downward and communicates with the hollow part of the mounting block (3). The side wall of the hollow part of the mounting block (3) extends outward to form a plurality of limiting grooves (32), and the plurality of limiting grooves (32) are arranged in a circular array with the slot (31) as the center.

3. The easily disassembled open-type current transformer according to claim 2, characterized in that: The locking assembly (4) comprises a plurality of clamping plates (42) slidably mounted inside the limiting groove (32); an adjusting disk (41) is arranged below the clamping plates (42); the bottom of the adjusting disk (41) is fixedly connected to the inner bottom surface of the mounting block (3) via a bearing seat; and an adjusting handle (43) is vertically arranged at the center of the bottom surface of the adjusting disk (41); the adjusting handle (43) extends vertically downward to the outside of the mounting block (3) and is arranged flush with the surface of the mounting block (3).

4. The easily disassembled open-type current transformer according to claim 3, characterized in that: The top surface of the adjustment disk (41) is also provided with a spiral groove which is gradually opened from the center to the outside, and the bottom of the clamping plate (42) extends vertically downward and is movably inserted into the groove.

5. The easily disassembled open-type current transformer according to claim 4, characterized in that: The extended parts on the bottom surfaces of both ends of the pressing block (2) form a hemispherical clamping portion (21), the clamping portion (21) is vertically inserted into the slot (31), and the clamping plate (42) is arranged in an arc shape on one side toward the center and is tightly fitted with the side wall of the clamping portion (21).

6. The easily disassembled open-type current transformer according to claim 5, characterized in that: A hexagonal hole is provided at the center of the end surface of the outward end of the adjusting handle (43).

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