Magnetic ring inductor insulation structure and magnetic ring inductor

Abstract

The utility model relates to the related technical field of magnetic ring inductors, and provides a magnetic ring inductor insulation structure and a magnetic ring inductor, the magnetic ring inductor insulation structure comprises an upper shell and a lower shell, the upper shell and the lower shell are made of insulation materials; the upper shell and the lower shell are detachably connected to form an annular inner cavity for arranging a magnetic ring, and heat dissipation holes are formed in the upper shell and the lower shell. The magnetic ring is provided with the buckle type insulation shell, reliable insulation and all-around protection of the magnetic ring are achieved, rapid arrangement of the outer insulation layer of the magnetic ring can be achieved, and the magnetic ring inductor is particularly suitable for a large-wire-diameter magnetic ring inductor.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic ring inductors, in particular to a magnetic ring inductor insulation structure and a magnetic ring inductor. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Magnetic components are electronic components that use the principle of electromagnetic induction to convert electrical energy and magnetic energy to each other, thereby achieving energy conversion and transmission. Figure 1 As shown in the figure, the magnetic ring inductor device is usually composed of a coil and a magnetic ring material (which can be referred to as a magnetic ring). The coil is wound by a wire, and the coil is usually wrapped around the magnetic ring material, and generates a magnetic field and inductance by conducting current. The magnetic ring inductor is a common inductor device, which is often used for filtering, coupling and energy storage in electronic circuits.

[0004] For magnetic ring inductors, on the one hand, the conductors of high-power magnetic ring inductors usually choose copper wires with thicker diameters and higher winding density to ensure tight winding and good conductivity. At the same time, its wire diameter is relatively thick, the current will be relatively large, the inductance performance will be relatively good, but the temperature rise will be relatively large. On the other hand, the material of the magnetic ring is selected from ferrite materials with good magnetic conductivity and small magnetic loss, or metal magnetic powder cores or amorphous / nanocrystalline magnetic cores. For high-power magnetic ring inductors, magnetic rings with larger outer diameters and thicker cores are generally selected to accommodate more windings.

[0005] The inventors found in their research that the current method for setting the insulation layer of the magnetic ring of a large-diameter magnetic ring inductor is as follows: usually, an insulation layer needs to be sprayed on the magnetic ring, and then an insulating tape is wrapped around it to strengthen the insulation. This requires a lot of manual wrapping of the insulating tape, and because the overlapping size of the tape is difficult to accurately control during wrapping, uneven insulation thickness may result. In addition, when winding the magnetic ring wrapped with tape, the insulation may be damaged due to squeezing or bumping, which in turn causes damage to the spray insulation layer of the magnetic core, posing a risk of short-circuiting the coil and the magnetic core and burning the machine. Utility Model Content

[0006] In order to solve the above problems, the utility model proposes a magnetic ring inductor insulation structure and a magnetic ring inductor, a snap-on insulating shell is provided for the magnetic ring, reliable insulation and all-round protection of the magnetic ring are achieved, and the outer insulating layer of the magnetic ring can be quickly set, which is particularly suitable for large-diameter magnetic ring inductors.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] One or more embodiments provide a magnetic ring inductor insulation structure, including an upper shell and a lower shell, the upper shell and the lower shell are made of insulating material; the upper shell and the lower shell are detachably connected to form an annular inner cavity for setting the magnetic ring, and heat dissipation holes are set on the upper shell and the lower shell.

[0009] One or more embodiments provide a magnetic toroidal inductor, including a magnetic toroid, a coil, and the above-mentioned magnetic toroidal inductor insulation structure.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model is provided with an insulating structure for setting a magnetic ring, and adopts a structure of upper and lower shells. When in use, the insulating upper shell and lower shell are directly buckled on the magnetic ring, so that the insulating outer layer of the magnetic ring can be quickly set, and the winding work of the insulating tape is not required, which reduces the number of contacts with the insulating layer sprayed on the magnetic ring. Only one operation is required to complete the reliable setting of the insulating outer layer, reducing the probability of damage to the sprayed insulating layer; at the same time, heat dissipation holes are also provided, which can improve the heat dissipation effect of the magnetic core and achieve effective heat dissipation under the condition of strengthening insulation. In addition, compared with repeatedly winding the insulating tape, the insulating shell is easy to disassemble, effectively improving production efficiency, and can be reused in the production process, reducing the waste of raw materials.

[0012] The advantages of the present invention and additional advantages will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute a limitation on the present invention.

[0014] Figure 1 It is a structural schematic diagram of the conventional magnetic ring inductor of the utility model;

[0015] Figure 2 It is an exploded diagram of the structure of the magnetic ring inductor described in Example 2 of the utility model;

[0016] Figure 3 This is a first three-dimensional structural schematic diagram of the lower housing 2 of Embodiment 1 of the present utility model;

[0017] Figure 4 This is a first top view structural schematic diagram of the lower housing 2 of Embodiment 1 of the utility model;

[0018] Figure 5 It is a second three-dimensional structural schematic diagram of the lower housing 2 of Embodiment 1 of the utility model;

[0019] Figure 6It is a second top view structural schematic diagram of the lower housing 2 of Embodiment 1 of the utility model;

[0020] Figure 7 This is a schematic diagram of the multi-piece assembly structure of the housing of Example 1 of the utility model;

[0021] Figure 8 It is a top view of the first multi-piece split assembly structure of the housing of Example 1 of the utility model;

[0022] Fig. 9 It is a top view of the second multi-piece split assembly structure of the housing of Example 1 of the utility model;

[0023] Among them, 1. upper shell, 2. lower shell, 3. magnetic ring, 4. coil, 5. heat dissipation hole, 6. through slot;

[0024] 11. inner circular side wall, 12. outer circular side wall, 13. annular inner cavity;

[0025] 1-1, unit structure, 1-2, connection surface. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed descriptions are exemplary and are intended to provide further description of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] In the technical solutions disclosed in one or more embodiments, Figures 2 to 9 As shown, a magnetic ring inductor insulation structure includes an upper shell 1 and a lower shell 2, and the upper shell 1 and the lower shell 2 are made of insulating material; the upper shell 1 and the lower shell 2 are detachably connected to form an annular inner cavity 13 for setting the magnetic ring 3, and heat dissipation holes 5 are set on the upper shell 1 and the lower shell 2.

[0030] In the present embodiment, a shell structure for setting the magnetic ring 3 is provided, and a structure of upper and lower shells is adopted. When in use, the insulating upper shell 1 and the lower shell 2 are directly buckled on the magnetic ring 3, so that the insulating outer layer of the magnetic ring 3 can be quickly set. There is no need to wrap the insulating tape, which reduces the number of contacts with the insulating layer sprayed on the magnetic ring 3. The reliable setting of the insulating outer layer can be completed with only one operation. At the same time, heat dissipation holes 5 are also provided, which can improve the heat dissipation effect of the magnetic core and achieve effective heat dissipation while strengthening insulation.

[0031] Optionally, the upper shell 1 and the lower shell 2 may be made of insulating plastic material;

[0032] Plastic material is an existing material, which adopts the insulating majority polymer and thus has good insulating properties.

[0033] In some embodiments, the structures of the upper shell 1 and the lower shell 2 can be the same and are configured as annular shells, respectively including an inner circular side wall 11, an outer circular side wall 12 and a bottom surface, and the inner circular side wall 11, the outer circular side wall 12 and the bottom surface form an annular inner cavity 13 of a set width and height.

[0034] A possible connection method is that the upper shell 1 and the lower shell 2 are detachably connected, and a tight-fit connection structure can be adopted, and the two shells are tightly connected through the inner circular side wall 11 and the outer circular side wall 12.

[0035] Optionally, the tight-fit connection between the upper shell 1 and the lower shell 2 may be achieved by arranging the side wall of one shell inside the other shell;

[0036] In another implementation, the upper shell 1 and the lower shell 2 may also wrap the upper and lower surfaces of the magnetic ring 3 and be fixed by external winding. In this implementation, the upper shell 1 and the lower shell 2 are not directly connected.

[0037] Specifically, the inner circular side wall 11 and the outer circular side wall 12 of the upper shell 1 are arranged in the annular inner cavity 13 of the lower shell 2, and the inner circular side walls 11 and the outer circular side walls 12 of the two shells are arranged in a close fit; or, the inner circular side wall 11 and the outer circular side wall 12 of the lower shell 2 are arranged in the annular inner cavity 13 of the upper shell 1, and the inner circular side walls 11 and the outer circular side walls 12 of the two shells are arranged in a close fit.

[0038] Another feasible connection method is that the upper shell 1 and the lower shell 2 can be connected by snapping, and the connecting end surfaces of the upper shell 1 and the lower shell 2 are respectively provided with a slot and a protrusion, and the connection between the upper shell 1 and the lower shell 2 is achieved by the cooperation of the slot and the protrusion.

[0039] A further technical solution is that in order to reduce the size of the mold, the upper shell 1 and the lower shell 2 can respectively adopt a multi-piece split assembly structure, and the upper shell 1 and the lower shell 2 include a plurality of shell units 1-1 of the same shape, and the plurality of shell units 1-1 are assembled to obtain the upper shell 1 or the lower shell 2;

[0040] In some embodiments, the housing unit 1-1 is a structure obtained by dividing the annular housing structure into equal parts according to a set arc. Optionally, the housing unit 1-1 may adopt a unit structure whose bottom surface is a semicircle, a 1 / 3 circle, a 1 / 4 circle, or other unit structures that equally divide the annular housing structure;

[0041] Specifically, for a shell unit with a semicircular annular shell structure, two shell units can form a complete circular upper shell 1 or lower shell 2; a shell unit with a 1 / 4 circular bottom surface requires four shell units to form a complete circular upper shell 1 or lower shell 2; for a shell unit with a fan-shaped bottom surface, the number of shell units required to assemble a complete shell is determined according to the curvature of the fan.

[0042] Optionally, adjacent unit structures 1-1 are connected in a detachable manner, which may be a tight fit or a snap connection; the connecting surfaces 1-2 of adjacent unit structures 1-1 may be a stepped structure, or a slot structure, etc., any structure that can achieve a fitting connection between two adjacent unit structures 1-1.

[0043] Among them, the stepped structure is Figure 7 and Figure 8 As shown, the card slot structure is as follows Fig. 9 shown.

[0044] In this embodiment, the shell adopts a split assembly structure, which can reduce the size of the mold and thus reduce the production cost.

[0045] In some embodiments, heat dissipation holes 5 are respectively provided on the bottom surfaces of the upper shell 1 and the lower shell 2 .

[0046] Optionally, the heat dissipation hole 5 can be in any shape such as a circle, a curved trapezoid, an ellipse, a triangle, etc.

[0047] Among them, the heat dissipation hole 5 of the curved trapezoidal structure, such as Figure 5 and Figure 6 As shown;

[0048] In this embodiment, the provision of the heat dissipation holes 5 can reduce the problem of heat dissipation difficulty of the magnetic core and avoid the risk of burning the coil due to temperature rise of the magnetic core.

[0049] A further technical solution is that a through slot 6 is provided on the outer circular side wall 12 of the upper shell 1 perpendicular to the bottom surface of the upper shell 1 , and the length L of the through slot 6 is not greater than the height h of the outer circular side wall 12 , that is, 0<L≤h;

[0050] A through slot 6 is provided on the outer circumferential side wall 12 of the lower shell 2 perpendicular to the bottom surface of the lower shell 2, and the length L of the through slot 6 is not greater than the height h of the outer circumferential side wall 12, that is, 0<L≤h;

[0051] In this embodiment, a through groove 6 is provided on the outer circular side wall 12 of the shell, which can enhance the buffering and shock absorbing capabilities of the shell structure and can also improve the efficiency of the product assembly process.

[0052] Furthermore, in order to achieve uniform winding distribution, improve transformer stability, and improve coil winding efficiency, stripe-shaped protrusions are provided on the outer surfaces of the upper shell 1 and the lower shell 2, and the direction of the stripes follows the winding direction of the magnetic ring inductor coil, so that the stripe grooves formed between the protrusions can accommodate the wound wire.

[0053] Example 2

[0054] Based on Example 1, this embodiment provides a magnetic ring inductor, such as Figure 2 As shown, it includes a magnetic ring 3, a coil 4 and a magnetic ring inductor insulation structure described in Example 1. The magnetic ring inductor insulation structure is arranged on the magnetic ring 3, and the coil 4 is wound around the insulation structure on the magnetic ring 3.

[0055] Optionally, the coil 4 may be a round wire or a flat wire;

[0056] Optionally, the material of the magnetic ring 4 can be ferrite, metal magnetic powder core, amorphous / nanocrystalline or other composite magnetic materials;

[0057] Optionally, the magnetic ring inductor is provided with a base for placing and fixing the magnetic ring inductor and playing an insulating role.

[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0059] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A magnetic ring inductor insulation structure, characterized in that: It comprises an upper shell and a lower shell, and the upper shell and the lower shell are made of insulating material; the upper shell and the lower shell are detachably connected to form an annular inner cavity for arranging a magnetic ring, and heat dissipation holes are arranged on the upper shell and the lower shell; The outer surfaces of the upper shell and the lower shell are provided with stripe-shaped protrusions, and the direction of the stripes follows the winding direction of the magnetic ring inductor coil.

2. The magnetic ring inductor insulation structure according to claim 1, characterized in that: The upper shell and the lower shell have the same structure and are respectively arranged as annular shells, the annular shells include an inner circular side wall, an outer circular side wall and a bottom surface, and the inner circular side wall, the outer circular side wall and the bottom surface form an annular inner cavity with a set width and height.

3. The magnetic ring inductor insulation structure according to claim 1, characterized in that: The upper shell and the lower shell respectively adopt a multi-piece split assembly structure, including a plurality of shell units of the same shape. The upper shell or the lower shell is obtained by assembling the plurality of shell units.

4. A magnetic ring inductor insulation structure as claimed in claim 3, characterized in that: The shell unit is a structure obtained by dividing the annular shell structure into equal parts according to a set arc.

5. The magnetic ring inductor insulation structure according to claim 1, characterized in that: A heat dissipation hole is arranged on the bottom surface of the upper shell; or / and a heat dissipation hole is arranged on the bottom surface of the lower shell.

6. A magnetic toroidal inductor insulation structure as claimed in claim 5, characterized in that: The heat dissipation holes are circular, curved-edge trapezoidal, elliptical or triangular.

7. The magnetic toroidal inductor insulation structure according to claim 1, characterized in that: A through groove is provided on the outer circular side wall of the upper shell body, perpendicular to the bottom surface of the upper shell body, and the length of the through groove is not greater than the height of the outer circular side wall; Or / and, a through groove is provided on the outer circular side wall of the lower shell body perpendicular to the bottom surface of the lower shell body, and the length of the through groove is not greater than the height of the outer circular side wall.

8. A magnetic ring inductor, characterized in that: It comprises a magnetic ring, a coil and a magnetic ring inductor insulation structure as described in any one of claims 1 to 7.

9. A magnetic ring inductor as claimed in claim 8, characterized in that: The coil is round wire or flat wire; Alternatively, the toroidal inductor is provided with a base for placing and fixing the toroidal inductor.

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