Multifunctional current transformer

Abstract

The multifunctional current transformer comprises a protective shell and a transformer body installed in the protective shell, an opening groove is formed in the top of the interior of the protective shell, an arc-shaped sealing plate matched with opening and closing of the opening groove is connected in the protective shell in a sliding mode, and a locking structure is arranged on the arc-shaped sealing plate. An arc-shaped frame is fixedly arranged on the protective shell, a shaft rod is rotationally connected to the inner side of the arc-shaped frame, and a protective shed is wound around the outer side of the shaft rod. In the process that the arc-shaped sealing plate slides to seal the opening groove of the protection shell, the protection shed is rotated to be opened from a winding state, and when the top of the protection shell is impacted by force, the flexible protection shed is pressed to deform, so that the protection effect on the top of the arc-shaped sealing plate is achieved, and the top of the arc-shaped sealing plate is shielded and protected through the flexible protection shed; and long-term safety protection of the mutual inductor body arranged in the protective shell is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, in particular to a multifunctional current mutual inductor. Background Art

[0002] A current transformer is a special transformer that converts large current on the primary side into small current on the secondary side based on the principle of electromagnetic induction for easy measurement and protection.

[0003] In the prior art, according to patent application number: CN202223136766.1, a multifunctional current transformer can provide a certain pressure-bearing protection effect on the current transformer body by compressing the protective pad inside the protective shell assembly. However, since the compression protective pad is arranged inside the protective shell assembly, when the protective shell assembly is damaged, the buffering and compression-resistant spring can provide a buffering protection to the internal transformer body. After that, the user needs to replace the damaged protective shell assembly. This protection method only has a one-time protection function, which is not conducive to long-term safety protection of the transformer.

[0004] Based on the above-mentioned defects, a multifunctional current transformer is provided. Utility Model Content

[0005] The purpose of the utility model is to provide a multifunctional current transformer in order to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multifunctional current transformer, comprising a protective shell and a transformer body installed in the protective shell, the top of the protective shell is formed with an open groove cooperating with the transformer body to enter and exit, an arc-shaped sealing plate is slidably connected in the protective shell to cooperate with the opening and closing of the opening groove, a locking structure is arranged on the arc-shaped sealing plate, an arc-shaped frame is fixed on the protective shell, the inner side of the arc-shaped frame is rotatably connected with an axle rod, the outer side of the axle rod is wound with a protective shed, the outer end of the arc-shaped sealing plate is fixed with a frame plate, and the free end of the protective shed is fixed to the frame plate.

[0007] Preferably, the locking structure comprises a bolt screwed into the arc-shaped sealing plate, a knob is fixedly provided on the bolt, and an abutment block is fixedly provided on the side end of the knob.

[0008] Preferably, the protective shell is internally formed with a first groove into which the matching bolt is circumferentially embedded, and a second groove into which the matching abutment block is radially embedded.

[0009] Preferably, a clamping shaft is fixedly disposed at one end of the shaft rod passing through the arc frame, and a vortex spring is abutted against the outer end of the arc frame via a clamping plate, and the free end of the vortex spring is fixed to the clamping shaft.

[0010] Preferably, a sliding rod is fixedly provided at the side end of the protective shed, and a sliding groove cooperating with the sliding rod is formed inside the arc-shaped frame.

[0011] Preferably, the slide bar and the slide groove are matched spherical structures, and the spherical structure limits the slide bar from being separated from the slide groove.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] In the present application, during the process of the arc-shaped sealing plate sliding to close the opening groove of the protective shell, the protective shed rotates and opens from a wound state. When the top of the protective shell is impacted by force, the flexible protective shed will be compressed and deformed, thereby achieving a protective effect on the top of the arc-shaped sealing plate. The shielding and protection of the top of the arc-shaped sealing plate by the flexible protective shed is beneficial to long-term safety protection of the transformer body installed in the protective shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the three-dimensional structure of a mutual inductor provided according to an embodiment of the utility model is shown;

[0015] Figure 2 A schematic cross-sectional view of a transformer according to an embodiment of the present utility model is shown;

[0016] Figure 3 A schematic diagram of the separation structure of the abutment block and the second groove provided according to an embodiment of the utility model is shown;

[0017] Figure 4 A schematic diagram of the separation structure of the slide bar and the slide groove provided according to an embodiment of the utility model is shown.

[0018] Legend:

[0019] 1. Protective shell; 101. First groove; 102. Second groove; 2. Arc frame; 201. Slide groove; 3. Axle rod; 4. Protective shed; 5. Slide rod; 6. Snap-on shaft; 7. Vortex spring; 8. Arc sealing plate; 9. Bolt; 10. Knob; 11. Abutment block; 12. Frame plate; 13. Transformer body. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a multifunctional current transformer, including a protective shell 1 and a transformer body 13 installed in the protective shell 1, an open groove for matching the transformer body 13 to enter and exit is formed on the top of the protective shell 1, an arc-shaped sealing plate 8 for matching the opening and closing of the opening groove is slidably connected in the protective shell 1, a locking structure is arranged on the arc-shaped sealing plate 8, an arc-shaped frame 2 is fixed on the protective shell 1, an axle rod 3 is rotatably connected to the inner side of the arc-shaped frame 2, a protective shed 4 is wound around the outer side of the axle rod 3, a frame plate 12 is fixed on the outer end of the arc-shaped sealing plate 8, and the free end of the protective shed 4 is fixed to the frame plate 12.

[0022] After the user places the transformer body 13 into the protective shell 1 through the opening groove, the user pulls the arc-shaped sealing plate 8 to make the arc-shaped sealing plate 8 slide along the inner side of the protective shell 1 until the arc-shaped sealing plate 8 completes the sealing of the opening groove of the protective shell 1. At this time, the arc-shaped sealing plate 8 is fixed to the protective shell 1 through the locking structure, thereby completing the installation of the transformer body 13.

[0023] During the process of the arc-shaped sealing plate 8 sliding to close the opening groove of the protective shell 1, the frame plate 12 fixed on the arc-shaped sealing plate 8 will pull the protective shed 4, causing the protective shed 4 to rotate and open from a wound state. When the top of the protective shell 1 is impacted by force, the flexible protective shed 4 will be compressed and deformed, thereby realizing the protection of the top of the arc-shaped sealing plate 8. The shielding and protection of the top of the arc-shaped sealing plate 8 by the flexible protective shed 4 is beneficial to the long-term safety protection of the transformer body 13 installed in the protective shell 1.

[0024] Specifically, Figure 2 and Figure 3 As shown, the locking structure includes a bolt 9 screwed into the arc-shaped sealing plate 8, a knob 10 is fixedly disposed on the bolt 9, and an abutment block 11 is fixedly disposed at the side end of the knob 10.

[0025] When the bolt 9 is embedded in the first groove 101 as the arc-shaped sealing plate 8 rotates, the abutment block 11 fixed on the knob 10 is pressed into the second groove 102 by rotating the knob 10, thereby limiting the arc-shaped sealing plate 8 from sliding freely.

[0026] The protective shell 1 is internally formed with a first groove 101 for circumferential embedding of the bolt 9 and a second groove 102 for radial embedding of the abutment block 11. The width of the first groove 101 matches the diameter of the bolt 9, and the second groove 102 matches the abutment block 11, and the diameter of the abutment block 11 is larger than the diameter of the knob 10.

[0027] Specifically, Figure 1 and Figure 4As shown, one end of the shaft rod 3 passing through the arc frame 2 is fixed with a clamping shaft 6, and the outer end of the arc frame 2 is abutted against a vortex spring 7 through a clamping plate, and the free end of the vortex spring 7 is fixed to the clamping shaft 6.

[0028] When the arc-shaped sealing plate 8 slides along the protective shell 1 to close the opening groove, the clamping shaft 6 fixed to the shaft rod 3 will pull the vortex spring 7 to unwind. When the user pulls the arc-shaped sealing plate 8 to open the opening groove, the clamping shaft 6 will drive the shaft rod 3 to rotate and reset under the action of the winding force of the vortex spring 7, so that the shaft rod 3 rewinds the protective shed 4, thereby achieving the purpose of regular retraction and release of the protective shed 4, and when the arc-shaped sealing plate 8 closes the opening groove, the vortex spring 7 tightens the protective shed 4. When the protective shed 4 is compressed and deformed, the vortex spring 7 is unwound under the force, which plays a role in buffering the impact force.

[0029] Specifically, Figure 3 and Figure 4 As shown, a slide bar 5 is fixedly provided at the side end of the protection shed 4, and a slide groove 201 is formed inside the arc frame 2 to cooperate with the slide bar 5 to slide. The slide bar 5 and the slide groove 201 are adapted spherical structures, and the spherical structure is used to limit the slide bar 5 from being separated from the slide groove 201. Through the coordinated arrangement of the slide groove 201 and the slide bar 5, the protection shed 4 is shielded on the outside of the arc-shaped sealing plate 8 in an arc-shaped structure with a predetermined track, and the protection shed 4 is stretched under the action of the vortex spring 7.

[0030] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multifunctional current transformer, comprising a protective shell (1) and a transformer body (13) installed in the protective shell (1), characterized in that: An opening slot for cooperating with the transformer body (13) to enter and exit is formed at the top of the protective shell (1), an arc-shaped sealing plate (8) cooperating with the opening and closing of the opening slot is slidably connected in the protective shell (1), a locking structure is arranged on the arc-shaped sealing plate (8), an arc-shaped frame (2) is fixedly arranged on the protective shell (1), an axle (3) is rotatably connected to the inner side of the arc-shaped frame (2), a protective shed (4) is wound around the outer side of the axle (3), a frame plate (12) is fixedly arranged at the outer end of the arc-shaped sealing plate (8), and the free end of the protective shed (4) is fixed to the frame plate (12).

2. A multifunctional current transformer according to claim 1, characterized in that: The locking structure comprises a bolt (9) screwed into the arc-shaped sealing plate (8), a knob (10) is fixedly provided on the bolt (9), and an abutment block (11) is fixedly provided on the side end of the knob (10).

3. A multifunctional current transformer according to claim 2, characterized in that: The protective shell (1) is internally formed with a first groove (101) in which the matching bolt (9) is circumferentially embedded, and a second groove (102) in which the matching abutment block (11) is radially embedded.

4. A multifunctional current transformer according to claim 1, characterized in that: One end of the shaft rod (3) that passes out of the arc frame (2) is fixedly provided with a clamping shaft (6); the outer end of the arc frame (2) is abutted against a vortex spring (7) via a clamping plate; the free end of the vortex spring (7) is fixed to the clamping shaft (6).

5. A multifunctional current transformer according to claim 1, characterized in that: A sliding rod (5) is fixedly provided at the side end of the protection shed (4), and a sliding groove (201) cooperating with the sliding rod (5) is formed inside the arc-shaped frame (2).

6. A multifunctional current transformer according to claim 5, characterized in that: The sliding rod (5) and the sliding groove (201) are matched spherical structures, and the sliding rod (5) is restricted from being separated from the sliding groove (201) by the spherical structure.

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