Inductor shielding structure

Abstract

An inductor shielding structure comprises an inductor body, the inductor body comprises a bottom surface, a top surface and a plurality of side surfaces, and two opposite sides of the bottom surface are respectively provided with a working electrode; the conductive shielding shell covers the bottom surface, the top surface and at least two side surfaces of the inductor body, the bottom surface of the conductive shielding shell is provided with two openings corresponding to the working electrodes respectively, and the conductive shielding shell is provided with grounding electrodes on the two opposite sides of the bottom surface respectively; the conductive shielding shell is respectively provided with at least one positioning part for the inductor body to lean on on each side surface of the uncoated inductor body, and the top of the conductive shielding shell is provided with a seam; and the combining piece is combined with the top of the conductive shielding shell and covers the seam. According to the utility model, the inductor body is coated by the conductive shielding shell, so that the exposed electromagnetic field is reduced, and the inductor is flat up and down and is easy to install by an SMT (Surface Mount Technology) construction method.

Description

Technical Field

[0001] The utility model relates to an inductor shielding structure, in particular to an inductor shielding structure in which a conductive shielding shell is wrapped around the outer side of the inductor body. Background Art

[0002] In this technologically advanced era, various electronic devices pursue miniaturization and extreme circuit board power density. Consequently, the spacing between electronic components on circuit boards continues to shrink. Many components, such as inductors and transformers, utilize magnetic fields to operate. These components, known as electromagnetic interference (EMI), release magnetic fields into the surrounding area. This can affect the operation of other components in close proximity. Therefore, in applications requiring high stability, such as automotive electronics, the effects of EMI must be carefully considered.

[0003] Therefore, a shielded inductor has emerged. For example, Taiwan Patent Publication No. TWI734771 discloses a shielded inductor with a housing attached to the outside of the inductor. However, the housing does not cover the bottom surface of the inductor, and the shielding effect still needs to be improved.

[0004] In view of this, the present inventors have accumulated years of research and practical experience in related fields and have created an inductor shielding structure to improve the above-mentioned deficiencies of the existing technology. Utility Model Content

[0005] The main purpose of the present invention is to provide an inductor shielding structure, in which a conductive shielding shell covering the top surface, bottom surface and at least two side surfaces is installed outside the inductor body to shield the electromagnetic waves of the inductor body.

[0006] To achieve the above-mentioned purpose, the inductor shielding structure of the present invention includes an inductor body, which includes a bottom surface, a top surface and multiple side surfaces, and a working electrode is respectively provided on two opposite sides of the bottom surface; a conductive shielding shell, which covers the bottom surface, top surface and at least two side surfaces of the inductor body, and the bottom surface of the conductive shielding shell is provided with two openings corresponding to each working electrode respectively, and the conductive shielding shell is also provided with a grounding electrode respectively on two opposite sides of the bottom surface, and the conductive shielding shell is provided with at least one positioning portion on each side of the inductor body that is not covered for the inductor body to lean on, and the top of the conductive shielding shell has a seam; and a coupling member, which is coupled to the top of the conductive shielding shell and covers the seam.

[0007] In one embodiment, the conductive shielding shell is formed by bending a straight sheet of material, with its front and rear ends bent to the top surface of the inductor body to form a seam, making the conductive shielding shell easier to manufacture. The inductor body can be placed into the conductive shielding shell during the bending process, positioned by leaning against the various positioning features. The front and rear ends of the conductive shielding shell are then bent to the top surface of the inductor body to form the seam. A bonding member is then attached to the top of the conductive shielding shell, covering the seam to join the front and rear ends of the conductive shielding shell together. The bonding member can be a sheet material with adhesive or a metal sheet welded to the conductive shielding shell.

[0008] In one embodiment, the inductor body can be a rectangular molded inductor. The working electrodes are positioned corresponding to the left and right sides of the bottom surface of the conductive shielding shell, while the working electrodes and ground electrodes are positioned corresponding to the four sides of the bottom surface of the inductor body. The ground electrodes can be formed by protruding downward from the conductive shielding shell, for example, by applying pressure with a tool to cause the bottom surface of the conductive shielding shell to protrude downward. This ensures that the working electrodes and ground electrodes are coplanar and the top of the assembly is also flat, facilitating surface mount technology (SMT) installation of the present invention.

[0009] The beneficial effects of the present invention are as follows: the conductive shielding shell covers the bottom surface, top surface and at least two side surfaces of the inductor body, which can simultaneously reduce the magnetic field leakage from the inductor body to the top, bottom and sides, so that other components are not affected by the magnetic field generated by the present invention.

[0010] In order to clearly and fully disclose the present invention, preferred embodiments are listed and described in detail below. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the utility model;

[0012] Figure 2 for Figure 1 Bottom view of

[0013] Figure 3 It is a side view of the utility model;

[0014] Figure 4 for Figure 1 Exploded diagram;

[0015] Figure 5 This is a schematic diagram of the assembly of the utility model;

[0016] Figure 6 It is a three-dimensional diagram of the inductor body of the present invention.

[0017] Description of Reference Numerals

[0018] 1. Inductor body;

[0019] 11. Bottom surface;

[0020] 12. Top surface;

[0021] 13. Side view;

[0022] 14. Working electrode;

[0023] 2. Conductive shielding shell;

[0024] 21. Open your mouth;

[0025] 22. Ground electrode;

[0026] 23. Seams;

[0027] 24. Positioning unit;

[0028] 3. Connecting parts. DETAILED DESCRIPTION

[0029] See also Figures 1 to 5 , discloses the drawings of the embodiments of the present invention, and the above drawings illustrate the inductor shielding structure of the present invention, which includes an inductor body 1, which includes a bottom surface 11, a top surface 12 and multiple side surfaces 13, and the bottom surface 11 is provided with a working electrode 14 on two opposite sides; a conductive shielding shell 2, which covers the bottom surface 11, the top surface 12 and at least two side surfaces 13 of the inductor body 1, and the bottom surface of the conductive shielding shell 2 is provided with two openings 21 corresponding to the working electrodes 14 respectively, and the conductive shielding shell 2 is provided with a grounding electrode 22 on two opposite sides of the bottom surface, and the conductive shielding shell 2 is provided with at least one positioning portion 24 on each side surface 13 of the inductor body 1 that is not covered for the inductor body 1 to lean on, and the top of the conductive shielding shell 2 has a seam 23; and a coupling 3, which is coupled to the top of the conductive shielding shell 2 and covers the seam 23.

[0030] In this embodiment, the inductor body 1 is a rectangular molded inductor. Figure 2 It can be seen that the positions of the working electrodes 14 and the ground electrodes 22 correspond to the four sides of the bottom surface 11 of the inductor body 1 respectively.

[0031] Figure 3 As can be seen in the figure, each ground electrode 22 can be formed by a downward protrusion of the conductive shielding housing 2. For example, by using a tool to apply pressure to cause the bottom surface of the conductive shielding housing 2 to protrude downward, the working electrodes 14 and the ground electrodes 22 are aligned, and the coupling member 3 is also flat, facilitating surface mount technology (SMT) installation of the present invention. In this embodiment, a positioning portion 24 is provided on the left and right sides of each opening 21.

[0032] Figure 4As can be seen in the figure, the connector 3 is connected to the top of the conductive shielding shell 2 and covers the seam 23 to connect the front and back ends of the conductive shielding shell 2. The connector 3 can be a sheet with adhesive or a metal sheet welded to the conductive shielding shell 2. The conductive shielding shell 2 can be made of metal such as copper or aluminum.

[0033] Figure 4 and Figure 5 It can be seen that the conductive shielding shell 2 can be formed by bending a straight plate and the front and rear ends are bent to the top surface 12 of the inductor body 1 to form a seam 23, making the conductive shielding shell 2 easy to manufacture. Figure 6 A three-dimensional diagram of the inductor body 1 in this embodiment can be seen in FIG.

[0034] During the manufacturing process of the present invention, the inductor body 1 can be bent (for example, Figure 5 The inductor body 1 can be positioned by leaning against the positioning portions 24, and then the front and rear ends of the conductive shielding shell 2 are bent to the top surface 12 of the inductor body 1 to form a seam 23. The coupling 3 is then coupled to the top of the conductive shielding shell 2 to complete the present invention.

[0035] In the present invention, the conductive shielding shell 2 covers the bottom surface 11, the top surface 12 and at least two side surfaces 13 of the inductor body 1, which can simultaneously reduce the magnetic field leakage from the inductor body 1 to the top, bottom and sides, so that other components are not affected by the magnetic field generated by the present invention.

[0036] However, the above is only a preferred embodiment of the present invention and cannot be used to limit the scope of the present invention. Any changes and modifications that can be obviously made by those skilled in the art should be deemed to not deviate from the essence of the present invention.

Claims

1. An inductor shielding structure, characterized in that: include: An inductor body comprising a bottom surface, a top surface, and a plurality of side surfaces, wherein a working electrode is provided on two opposite sides of the bottom surface; a conductive shielding shell covering the bottom, top, and at least two side surfaces of the inductor body, the bottom surface of the conductive shielding shell being provided with two openings corresponding to the working electrodes, and a grounding electrode being provided on opposite sides of the bottom surface of the conductive shielding shell. The conductive shielding shell is provided with at least one positioning portion on each uncovered side surface of the inductor body for the inductor body to lean against, and the top of the conductive shielding shell is provided with a seam; and A combining piece is combined with the top of the conductive shielding shell and covers the seam.

2. The inductor shielding structure according to claim 1, wherein: The conductive shielding shell is formed by bending a straight plate, and the front and rear ends are bent to the top surface of the inductor body to form the seam.

3. The inductor shielding structure according to claim 2, wherein: The positions of the working electrodes correspond to the left and right sides of the bottom surface of the conductive shielding shell.

4. The inductor shielding structure according to claim 3, wherein: The inductor body is a rectangular parallelepiped.

5. The inductor shielding structure according to claim 4, wherein: Positions of the working electrodes and the ground electrodes correspond to four sides of the bottom surface of the inductor body.

6. The inductor shielding structure according to claim 1, wherein: The inductor body is a molded inductor.

7. The inductor shielding structure according to claim 1, wherein: Each grounding electrode is formed by the conductive shielding shell protruding downwards.

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