Low-voltage miniature current transformer

Abstract

The utility model discloses a low-voltage miniature current transformer which comprises a transformer body, a vertical rod is arranged at the top end of the transformer body, and wire connecting positions are symmetrically arranged at the top end of the transformer body. The rotating mechanism is arranged on the vertical rod in a sleeving manner; the protection mechanisms are used for protecting the wire connecting positions, the protection mechanisms are installed on the two sides of the rotating mechanism, when the rotating mechanism drives the angle to change and the guide disc is rotated, fingers are stressed to hold a hollow block to lift the guide disc upwards, at the moment, a spring compresses the stroke, and the upward lifting process enables a protection cover to be separated from the blocking height of a blocking block; the rotating sleeve can change the compression stroke of the spring and compress the stroke of the spring, so that the spring can be stressed to extrude the guide disc, the pressure above the guide disc and the mutual inductor is improved, the problem of automatic deflection during wiring of a worker is prevented, and the position of the protective cover can be conveniently changed through the mode; and the wiring convenience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of current transformers, and particularly relates to a low-voltage micro current transformer. Background Art

[0002] A low-voltage current transformer is a device that can convert high alternating current into easily controllable low current, and has the characteristics of excellent performance and stable accuracy.

[0003] At present, the upper wiring terminal of the low-voltage current transformer in the prior art is exposed to the outside, which is prone to oxidation, resulting in rust of the wiring terminal and damage to the wiring terminal, thus affecting the service life of the low-voltage current transformer. According to CN220509812U, a low-voltage current transformer is disclosed, which includes a low-voltage current transformer. A rotating groove is provided on the low-voltage current transformer, a connecting block is provided in the rotating groove, a protective cover is connected to the connecting block, a lock is provided on the protective cover, a clamping block is provided below the lock, and the clamping block is clamped with a clamping groove. The wiring terminal above the low-voltage current transformer can be protected by the protective cover to prevent the external environment from affecting the wiring terminal and causing rust and damage to the wiring terminal, thereby affecting the service life of the low-voltage current transformer. Compared with the low-voltage current transformer in the prior art, the practicability is greatly increased.

[0004] In the above technical document, a flip-type protection method is adopted. When it is necessary to frequently connect or disconnect the current transformer, it is necessary to continuously open and close the flip, which may increase the complexity and time cost of the operation, and the wiring inlet is unique and the wiring cannot be connected from other directions, reducing the wiring flexibility and wiring convenience. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a low-voltage micro current transformer to solve the problems of dust prevention method, wiring flexibility and convenience in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A low-voltage micro current transformer includes a transformer, a vertical rod is provided at the top of the transformer, and wire connection parts are symmetrically provided at the top of the transformer; a rotating mechanism, the rotating mechanism is sleeved on the vertical rod; a protective mechanism, the protective mechanism is used to protect the wire connection parts, and the protective mechanism is installed on both sides of the rotating mechanism and drives the angle transformation by the rotating mechanism.

[0008] Further, the rotating mechanism includes a guiding disk, the center of the guiding disk is sleeved on the vertical rod, a hollow block is provided above the guiding disk, branch arms are fixed on both sides of the hollow block, and protective mechanisms are connected to both sides of the branch arms. The hollow block has a trapezoidal structure, narrow at the top and wide at the bottom, and the middle of the hollow block is hollowed out in a trapezoid.

[0009] Furthermore, the protection mechanism includes a protection cover, which is connected to the lower side of the branch arm, a first opening is provided on one side of the protection cover, a second opening is passed through the other side of the protection cover, and a protection plate is connected to the lower side of one side of the protection cover away from the first opening. The protection cover is located above the wire connection, which can isolate dust from contacting the wire connection and prevent circuit failure caused by dust entering, and the first opening and the second opening can provide multiple line connection ports, which is convenient for wiring in different directions, increasing flexibility and wiring convenience.

[0010] Furthermore, barrier blocks are provided at the four corners of the top of the transformer. When the protective cover is above the wire connection, the protective cover is close to one side of the barrier blocks, and the protective cover cannot be moved under the action of the four barrier blocks, which can prevent the guide plate from automatically rotating and improve the protective stability of the protective cover.

[0011] Furthermore, the protective plate is made of a soft rubber material. When the guide disc rotates, the protective plate will contact the wire connection, affecting the rotation, while the protective plate made of a soft rubber material can be deformed without affecting the rotation of the protective cover.

[0012] Furthermore, a spring is sleeved on the vertical pole, the vertical pole is a threaded structure, a sleeve is threadedly engaged on the vertical pole, a step platform is provided below the sleeve, and the spring acts between the step platform and the guide plate.

[0013] In the above scheme, the rotating sleeve compresses the stroke of the spring, so that the spring is pressed against the guide plate, thereby increasing the pressure above the guide plate and the transformer, and preventing the problem of automatic deflection when the staff is wiring.

[0014] The technical solution of the utility model has the following beneficial effects:

[0015] 1. The protective cover is located above the wire connection, which can isolate dust from contacting the wire connection and prevent circuit failure caused by dust entry. The first opening and the second opening can provide multiple line connection ports, which are convenient for wiring in different directions, increasing flexibility and wiring convenience.

[0016] 2. When the guide plate needs to be rotated, hold the hollow block with your fingers and pull the guide plate upward. At this time, the spring is compressed, and the upward pulling process will make the protective cover break away from the height blocked by the blocking block, which is convenient for the rotation angle. The rotating sleeve can change the compression stroke of the spring. The rotating sleeve compresses the stroke of the spring, so that the spring will be forced to squeeze the guide plate, increase the pressure above the guide plate and the transformer, and prevent the problem of automatic deflection when the staff is wiring. This method can easily change the position of the protective cover, improve the convenience of wiring, and is easy to use and convenient to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for description in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2 It is a schematic plan view of the present utility model.

[0020] Figure 3 It is a schematic diagram of the angle transformation structure of the present utility model.

[0021] Figure 4 It is a schematic diagram of the angle transformation structure of the present utility model.

[0022] Reference signs: 10, current transformer; 11, wire connection point; 12, vertical pole; 13, guide disc; 14, hollow block; 15, branch arm; 16, protective cover; 17, first opening; 18, second opening; 19, protective plate; 20, spring; 21, sleeve; 22, stepped platform; 23, blocking block. Specific embodiments

[0023] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0024] Embodiment 1:

[0025] Refer to Figures 1-3 , a low-voltage micro current transformer, including a current transformer 10, a vertical pole 12 is provided at the top of the current transformer 10, and wire connection points 11 are symmetrically provided at the top of the current transformer 10; the wire connection points 11 are used to connect wires, and nuts are connected to the wire connection points 11, and the wires are pressed by the nuts to complete the electrical connection of the wires to the current transformer 10.

[0026] Refer to Figure 3 , a rotating mechanism, the rotating mechanism is sleeved on the vertical pole 12; the rotating mechanism includes a guide disc 13, the center of the guide disc 13 is sleeved on the vertical pole 12, a hollow block 14 is provided above the guide disc 13, branch arms 15 are fixed on both sides of the hollow block 14, and protective mechanisms are connected to both sides of the branch arms 15.

[0027] In the above solution, the guiding disk 13 has a circular structure with an opening at the center that is fitted through and on the vertical rod 12. It can freely rotate 360° around the vertical rod 12 as the center. The hollow block 14 has a trapezoidal structure, narrower at the top and wider at the bottom. The middle of the hollow block 14 is hollowed out in a trapezoidal shape, and the vertical rod 12 is located in the middle hollow of the hollow block 14. The connection between the branch arm 15 and the protection mechanism is by bolt connection. On one side surface of the branch arm 15, there are bolt counterbores for installing bolts to install the protection mechanism on both sides. This installation method can facilitate the replacement of the protection mechanism, and the trapezoidal structure of the hollow block 14 can facilitate the staff to hold the hollow block 14 by applying force with their fingers, thereby rotating the guiding disk 13 to change the angle and driving the protection mechanism to rotate. The purpose of rotating the guiding disk 13 to change the angle is to move the protection mechanism away from above the wire connection 11, so that the wire connection 11 is exposed, which can facilitate the staff to connect the lines and will not cause obstruction.

[0028] Also refer to Figure 2 and Figure 3 , the protection mechanism is used to protect the wire connection 11. The protection mechanism is installed on both sides of the rotating mechanism and is driven by the rotating mechanism to change the angle. The protection mechanism includes a protective cover 16. The protective cover 16 is connected below the branch arm 15. One side of the protective cover 16 is provided with a first opening 17, and the other side of the protective cover 16 is penetrated by a second opening 18. Below one side of the protective cover 16 and away from the first opening 17, a protective plate 19 is connected.

[0029] In the above solution, when the protective cover 16 is above the wire connection 11 (according to Figure 2 ), it can isolate the dust from contacting the wire connection 11 and prevent circuit failures caused by dust entering. The first opening 17 and the second opening 18 can provide multiple wire connection ports, facilitating wiring in different directions, increasing flexibility and wiring convenience. At the same time, the protective plate 19 is used to isolate the wire connections 11 at both ends, avoiding short circuits or creepage phenomena caused by contact between the two ends and improving electrical safety. When the protective cover 16 is not above the wire connection 11 (according to Figure 3 ), the wire connection 11 will be exposed, which can facilitate the staff to connect the lines and will not cause obstruction, enabling the staff to directly and clearly see the connection points, facilitating line connection, inspection, and maintenance, and improving work efficiency: reducing the operational inconvenience caused by the shielding of the protective cover and accelerating the work progress. Only by applying force with the fingers to hold the hollow block 14, the guiding disk 13 can be rotated to change the angle, driving the protective covers 16 at both ends to rotate.

[0030] Further refer to Figures 1-4, barrier blocks 23 are provided at the four corners of the top of the mutual inductor 10. When the protective cover 16 is above the wire connection 11, the protective cover 16 is close to the side of the barrier blocks 23, and the protective cover 16 cannot be moved under the action of the four barrier blocks 23, which can prevent the guide plate 13 from automatically rotating and improve the protective stability of the protective cover 16.

[0031] Further references Figure 4 , the protective plate 19 is made of a rubber soft material. When the guide plate 13 rotates, the protective plate 19 will contact the wire connection 11, affecting the rotation, and the protective plate 19 made of a rubber soft material can be deformed without affecting the rotation of the protective cover 16.

[0032] Furthermore, a spring 20 is sleeved on the vertical rod 12 . The vertical rod 12 is a threaded structure. A sleeve 21 is threadedly engaged on the vertical rod 12 . A step platform 22 is provided below the sleeve 21 . The spring 20 acts between the step platform 22 and the guide plate 13 .

[0033] In the above scheme, before installing the rotating mechanism, first pass the sleeve 21 through the top of the hollow block 14, and at the same time, sleeve the spring 20 and the guide plate 13 on the vertical pole 12, and then rotate the sleeve 21 to squeeze the spring 20 with the step platform 22. When it is necessary to rotate the guide plate 13, hold the hollow block 14 with your fingers and pull the guide plate 13 upward. At this time, the spring 20 is compressed. The upward pulling process will make the protective cover 16 break away from the height blocked by the blocking block 23, which is convenient for the rotation angle. When the fingers release the hollow block 14, the guide plate 13 will be squeezed by the spring 20 and displaced downward to restore its original position. The compression stroke of the spring 20 can be changed by rotating the sleeve 21. When wiring is required, the protective cover 16 is rotated to the desired position. Figure 3 , the sleeve 21 is rotated to compress the stroke of the spring 20, so that the spring 20 will be forced to squeeze the guide plate 13, increase the pressure above the guide plate 13 and the transformer 10, and prevent the problem of automatic deflection when the staff is wiring. After the wiring is completed, the sleeve 21 is rotated again to release the compression stroke of the spring 20, and the fingers hold the hollow block 14 to pull the guide plate 13 upward, and rotate to reset the protective cover 16 above the wire connection 11. This method can conveniently change the position of the protective cover 16, improve the convenience of wiring, and is easy to use and convenient to disassemble and assemble.

[0034] The specific implementation process of this embodiment is as follows:

[0035] The first opening 17 and the second opening 18 can provide multiple wiring connection ports, facilitating wiring in different directions, increasing flexibility and wiring convenience. When rotating the guiding disc 13, hold the hollow block 14 with fingers to apply force and lift the guiding disc 13 upward. At this time, the spring 20 compresses. During the upward lifting process, the protective cover 16 will be disengaged from the blocking height of the blocking block 23, facilitating the rotation angle. When the fingers release the hollow block 14, the guiding disc 13 will be displaced downward by the extrusion of the spring 20 and thus return to its original position. By rotating the sleeve 21, the compression stroke of the spring 20 can be changed. When wiring is required, rotate the protective cover 16 to Figure 3 , during the process of the rotating sleeve 21 compressing the spring 20, the spring 20 will then apply force to squeeze the guiding disc 13, increasing the pressure above the mutual inductor 10 of the guiding disc 13, preventing the problem of automatic deflection when the staff is wiring. After the wiring is completed, rotate the sleeve 21 again to release the compression stroke of the spring 20. Hold the hollow block 14 with fingers to apply force and lift the guiding disc 13 upward, and rotate and reset the protective cover 16 above the wire connection 11.

[0036] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Within the essence and protection scope of the present invention, various modifications or equivalent replacements can be made to the present invention. Such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only used to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, these terms indicating orientation or positional relationship should not be construed as limiting the present invention.

[0038] In the description of the present invention, it should be further noted that unless otherwise clearly specified and limited. The terms "set" and "connect" should be understood in a broad sense. For example, these terms can represent a fixed connection, a detachable connection or an integral connection between elements; they can also represent a mechanical connection or an electrical connection; they can also represent a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

Claims

1. A low voltage miniature current transformer, comprising a transformer (10), characterized in that: The top of the mutual inductor (10) is provided with a vertical pole (12), and the top of the mutual inductor (10) is symmetrically provided with a wire connection point (11); A rotating mechanism, wherein the rotating mechanism is sleeved on the vertical rod (12); The protective mechanism is used to protect the wire connection (11). The protective mechanism is installed on both sides of the rotating mechanism and is driven by the rotating mechanism to change the angle.

2. A low voltage micro current transformer according to claim 1, characterized in that: The rotating mechanism comprises a guide plate (13), the center of which is sleeved on the vertical rod (12), a hollow block (14) is arranged above the guide plate (13), branch arms (15) are fixed on both sides of the hollow block (14), and protective mechanisms are connected on both sides of the branch arms (15).

3. A low voltage miniature current transformer according to claim 2, characterized in that: The hollow block (14) has a trapezoidal structure, which is narrow at the top and wide at the bottom, and the middle of the hollow block (14) is hollowed out in a trapezoidal shape.

4. A low voltage miniature current transformer according to claim 3, characterized in that: The protection mechanism comprises a protection cover (16), wherein the protection cover (16) is connected to the bottom of the branch arm (15), a first opening (17) is provided on one side of the protection cover (16), a second opening (18) is passed through the other side of the protection cover (16), and a protection plate (19) is connected to the bottom of one side of the protection cover (16) away from the first opening (17).

5. A low voltage miniature current transformer according to claim 4, characterized in that: Blocking blocks (23) are provided at the four corners of the top of the mutual inductor (10).

6. A low voltage miniature current transformer according to claim 4, characterized in that: The protective plate (19) is made of a soft rubber material.

7. A low voltage miniature current transformer according to claim 5, characterized in that: A spring (20) is sleeved on the vertical rod (12), the vertical rod (12) is a threaded structure, a sleeve (21) is threadedly engaged on the vertical rod (12), a step platform (22) is provided below the sleeve (21), and the spring (20) acts between the step platform (22) and the guide plate (13).

Images