Opening current transformer convenient to accurately close

Abstract

The utility model discloses an open current transformer convenient to accurately close, which comprises an upper shell and a lower shell, the upper shell and the lower shell are respectively provided with at least one mounting groove, and the upper shell and the lower shell form a complete circular ring; the group of magnetic cores are respectively arranged in the corresponding mounting grooves, and the upper shell and the lower shell are respectively and fixedly connected with the corresponding magnetic cores; the positioning plate is fixedly connected with the lower shell; and the guide boss is fixedly connected with the positioning plate, the upper shell is provided with a guide groove, and the guide boss is matched with the guide groove. The utility model relates to the technical field of current transformers, in particular to an open current transformer convenient to close accurately. The technical problem to be solved by the utility model is to provide the open current transformer which is convenient to accurately close, so that the close fitting of the fitting surfaces of an upper magnetic core and a lower magnetic core is facilitated, a mold is simple during shell material production, and the transformer is convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to an open current transformer which is convenient for accurate closure. Background Art

[0002] A current transformer (CT) is a sensor used to measure current in AC circuits. It measures and transforms current based on the principle of electromagnetic induction. When current flows through a conductor, it generates a magnetic field around it. A current transformer uses this principle to pass the measured current through a primary coil (primary winding), generating a magnetic field. This magnetic field then flows through a secondary coil (secondary winding), inducing an electric potential in the secondary coil. By measuring the potential in the secondary coil, the current in the primary coil can be inferred.

[0003] The joints between the upper and lower halves of a traditional open-end current transformer typically have varying degrees of gap due to limited mold precision. Coupled with the relatively soft nature of the plastic shell, the upper and lower magnetic core mating surfaces of the transformer are prone to misalignment when the shells are fastened together. This misalignment can cause severe magnetic leakage in the core's magnetic circuit, thereby affecting the transformer's accuracy. Users also have to manually correct the mating surfaces when misalignment is discovered, impacting installation efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an open current transformer that is easy to close accurately, which is conducive to achieving close fitting of the upper and lower magnetic core fitting surfaces, simple molds during shell material production, and convenient installation of the transformer.

[0005] The utility model adopts the following technical solutions to achieve the purpose of the utility model:

[0006] An open current transformer that facilitates accurate closure is characterized by comprising: an upper shell and a lower shell, each of which is provided with at least one mounting slot, the upper shell and the lower shell forming a complete circular ring; a set of magnetic cores, each disposed in a corresponding mounting slot, the upper shell and the lower shell being fixedly connected to the corresponding magnetic cores; a positioning plate fixedly connected to the lower shell; and a guide boss fixedly connected to the positioning plate, the upper shell being provided with a guide slot, the guide boss matching the guide slot. By adding a guide slot and a guide boss on one side of the open current transformer's fastening, the transformer can be precisely fastened, preventing the accuracy loss caused by the easy misalignment of the mating surfaces of existing open current transformers, saving calibration time, and improving installation efficiency.

[0007] As a further limitation of this technical solution, the positioning plate is provided with a slot hole, the upper shell is fixedly connected to the arc-shaped snap boss, and the arc-shaped snap boss matches the slot hole. By providing the arc-shaped snap boss and the slot hole, the upper shell and the lower shell are fastened together, which is simple to operate and convenient to use.

[0008] As a further limitation of the present technical solution, the arc-shaped snap-fit ​​boss is made of elastic material and has an arc-shaped end. The arc-shaped snap-fit ​​boss is made of elastic material and enters the slot hole to achieve a stable connection between the arc-shaped snap-fit ​​boss and the positioning plate.

[0009] As a further limitation of the present technical solution, the upper shell is fixedly connected to the rotating shaft, the lower shell is fixedly connected to the symmetrical ears, and the rotating shaft is rotatably connected to the symmetrical ears.

[0010] As a further limitation of the present technical solution, the upper shell is fixedly connected to the hanging ring.

[0011] Compared with the related art, the open current transformer provided by the present invention, which is easy to close accurately, has the following beneficial effects:

[0012] (1) This device can achieve precise fastening of the transformer by adding a guide groove and a guide boss on one side of the fastening part of the split-type transformer, preventing the accuracy loss caused by the easy misalignment of the existing split-type transformer fitting surface, saving correction time and improving installation efficiency;

[0013] (2) This device realizes the buckling of the upper shell and the lower shell by setting an arc-shaped buckle boss and a slot hole. It is simple to operate and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the utility model after buckling.

[0016] In the figure: 1. positioning plate, 2. slot hole, 3. guide boss, 4. lower shell, 5. mounting slot, 6. magnetic core, 7. ear piece, 8. rotating shaft, 9. hanging ring, 10. upper shell, 11. guide slot, 12. arc-shaped snap boss. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Embodiment 1: An open current transformer that is easy to accurately close comprises: an upper shell 10 and a lower shell 4, each of which is provided with at least one mounting groove 5, and the upper shell 10 and the lower shell 4 form a complete circular ring; a group of magnetic cores 6, respectively provided in the corresponding mounting grooves 5, the upper shell 10 and the lower shell 4 being fixedly connected to the corresponding magnetic cores 6; a positioning plate 1, fixedly connected to the lower shell 4; a guide boss 3, fixedly connected to the positioning plate 1, the upper shell 10 being provided with a guide groove 11, the guide boss 3 matching the guide groove 11. By adding a guide groove 11 and a guide boss 3 on one side of the snap-fitting part of the open-and-closed transformer, the precise snap-fitting of the transformer can be achieved, preventing the accuracy loss caused by the easy misalignment of the mating surface of the existing open-and-closed transformer, saving correction time, and improving installation efficiency.

[0019] The upper shell 10 is fixedly connected to the rotating shaft 8 , the lower shell 4 is fixedly connected to the symmetrical ear pieces 7 , and the rotating shaft 8 is rotationally connected to the symmetrical ear pieces 7 .

[0020] The upper shell 10 is fixedly connected to the hanging ring 9 .

[0021] The lower shell 4 and the upper shell 10 form a shell material, and the mold is simple when the shell material is produced.

[0022] The working principle of the open current transformer provided by the utility model, which is easy to close accurately, is as follows:

[0023] When buckled, the upper shell 10 and the lower shell 4 are swung, and the upper shell 10 and the lower shell 4 drive the magnetic core 6 to swing, the upper shell 10 drives the hanging ring 9 to swing, the upper shell 10 drives the rotating shaft 8 to rotate relative to the ear piece 7, and the lower shell 4 drives the positioning plate 1 and the guide boss 3 to swing, so that the guide boss 3 enters the guide groove 11, thereby achieving the fitting of the upper and lower magnetic cores 6.

[0024] Example 2: This example further elaborates on Example 1. The positioning plate 1 is provided with a snap-in hole 2, and the upper shell 10 is fixedly connected to an arcuate snap-in boss 12, which matches the snap-in hole 2. The provision of the arcuate snap-in boss 12 and the snap-in hole 2 enables the snap-in engagement of the upper shell 10 and the lower shell 4, making operation simple and convenient.

[0025] The arc-shaped buckle boss 12 is made of elastic material and has an arc-shaped end. The arc-shaped buckle boss 12 is made of elastic material and enters the slot hole 2 to achieve a stable connection between the arc-shaped buckle boss 12 and the positioning plate 1.

[0026] The working principle of the open current transformer provided by the utility model, which is easy to close accurately, is as follows:

[0027] The upper shell 10 drives the arc-shaped buckle boss 12 to swing, so that the arc-shaped buckle boss 12 is snapped into the slot hole 2 to achieve stable buckling.

[0028] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An open current transformer that is easy to close accurately, characterized in that: include: An upper shell (10) and a lower shell (4), wherein the upper shell (10) and the lower shell (4) are respectively provided with at least one mounting groove (5), and the upper shell (10) and the lower shell (4) form a complete circular ring; A group of magnetic cores (6) are respectively arranged in the corresponding mounting grooves (5), and the upper shell (10) and the lower shell (4) are respectively fixedly connected to the corresponding magnetic cores (6); A positioning plate (1) fixedly connected to the lower shell (4); A guide boss (3) is fixedly connected to the positioning plate (1); the upper shell (10) is provided with a guide groove (11); the guide boss (3) matches the guide groove (11); The positioning plate (1) is provided with a slot hole (2), the upper shell (10) is fixedly connected to an arc-shaped snap-fit ​​boss (12), and the arc-shaped snap-fit ​​boss (12) matches the slot hole (2); The arc-shaped buckle boss (12) is made of elastic material and has an arc-shaped end.

2. The open current transformer that is easy to close accurately according to claim 1 is characterized in that: The upper shell (10) is fixedly connected to the rotating shaft (8), the lower shell (4) is fixedly connected to the symmetrical ear pieces (7), and the rotating shaft (8) is rotationally connected to the symmetrical ear pieces (7).

3. The open current transformer that is easy to close accurately according to claim 1 is characterized in that: The upper shell (10) is fixedly connected to the hanging ring (9).

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