CN212380272U

CN212380272U - Inductance for improving inductance value and impedance value

Info

Publication number: CN212380272U
Application number: CN202020846341.1U
Authority: CN
Inventors: 谢明谚; 杨祥忠; 申宝琳
Original assignee: Tai Tech Advanced Electronics Si Hong Co ltd
Current assignee: Tai Tech Advanced Electronics Si Hong Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-01-19
Anticipated expiration: 2030-05-20

Abstract

The utility model relates to an inductance for improving inductance value and impedance value, which comprises a magnetic core and a cover body, wherein the magnetic core comprises a winding part, a first flange and a second flange, the winding part is positioned between the first flange and the second flange, and a coil is wound on the winding part; and the cover body covers the magnetic core, the cover body comprises a bottom wall and a plurality of side walls, the side walls surround the periphery of the bottom wall to define an accommodating space, and the length of each side wall is greater than or equal to two thirds of the length of each flange. The cover body covers the magnetic core to form a closed magnetic circuit for the inductor, so that a magnetic field is prevented from leaking, and the length of each side wall is greater than or equal to two thirds of the length of each flange, so that the inductor can achieve the purpose of improving the inductance value and can reduce the interference to other inductors.

Description

Inductance for improving inductance value and impedance value

[ technical field ] A method for producing a semiconductor device

The utility model relates to an inductance especially relates to an inductance that promotes inductance value and impedance value.

[ background of the invention ]

The inductor (inductor) is commonly used to provide a large resistance to high frequencies, and is commonly referred to as a choke (hook) by low frequencies such as direct current, when a large inductor (Winding) used in a transformer, a motor or a generator is used, but is also commonly used in a circuit board of a 3C component.

Referring to fig. 1, a conventional inductor structure is shown, in which a coil is wound around a winding portion 200 in the middle of a magnetic core 100, and flanges 300 are disposed on two sides of the magnetic core 100 to stop the coil from sliding outward. However, in order to prevent the leakage of the induced magnetic field from affecting the inductance value, the external of the inductor is completely sealed by the cover 400 to block the open and outward-diffused induced magnetic lines, so that the way of blocking the induced magnetic lines by the completely sealed cover outside the inductor relatively causes the whole volume and weight of the inductor to be increased and heavier, and is not suitable for light and thin electronic products, thereby requiring improvement; therefore, how to eliminate the above-mentioned defects and provide an inductor structure with a small volume and a closed magnetic circuit is the technical difficulty that the present inventors want to solve.

[ Utility model ] content

The utility model aims to provide a: aiming at the defects and shortcomings of the prior art, the inductor for improving the inductance value and the impedance value is provided.

In order to achieve the above object, the utility model adopts the following technical scheme: an inductor for improving inductance and impedance, comprising: the magnetic core comprises a winding part, a first flange and a second flange, wherein the winding part is positioned between the first flange and the second flange and is wound with a coil; and the cover body covers the magnetic core, the cover body comprises a bottom wall and a plurality of side walls, the side walls surround the periphery of the bottom wall to define an accommodating space, and the length of each side wall is greater than or equal to two thirds of the length of each flange.

The utility model discloses in: the number of the side walls is four, and the side walls surround the periphery of the bottom wall to form a square structure.

The utility model discloses in: the number of the side walls is two, and the side walls surround the periphery of the bottom wall to form a reverse-U-shaped structure.

The utility model discloses in: the cover body is a ferrite magnetic cover body.

After the structure is adopted, the utility model discloses beneficial effect does: the utility model has simple structure and reasonable design, and the magnetic core is covered by the cover body, so that the inductor forms a closed magnetic circuit, the magnetic field is prevented from being released outside, the inductor can achieve the purpose of improving the inductance value, and the interference to other inductors can be reduced; meanwhile, the accommodating space defined by the bottom wall and the side walls of the cover body is required to be enough to cover the magnetic core, so that the length of each side wall is greater than or equal to two thirds of the length of each flange, and the magnetic circuit of the inductor can be effectively limited.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute a limitation of the invention, and in which:

FIG. 1 is a schematic diagram of a prior art configuration;

fig. 2 is a schematic view of a first structure of the present invention;

fig. 3 is a schematic diagram of a first structure of the present invention in which the cover covers the magnetic core;

fig. 4 is a second schematic structural view of the present invention;

fig. 5 is a second structural schematic diagram of the cover body covering the magnetic core according to the present invention.

In the figure: 1 a magnetic core; 11 a winding part; 12 a first flange; 13 a second flange; 2, covering the body; 21 a bottom wall; 22 side walls; l1 first length; l2 second length.

[ detailed description ] embodiments

The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and the description are only for the purpose of explanation, but not for the purpose of limitation.

As shown in fig. 2-3, an inductor for improving inductance and impedance includes a magnetic core 1 and a cover 2. The magnetic core 1 includes a winding portion 11, a first flange 12 and a second flange 13, the winding portion 11 is located between the first flange 12 and the second flange 13, the winding portion 11 is provided with a coil to form the inductor, wherein the winding manner of the coil is not a feature of this creation and is not repeated herein. Specifically, the appearance of the magnetic core 1 may be I-shaped, the winding portion 11 is disposed in a middle region of the magnetic core 1, and the first flange 12 and the second flange 13 are disposed in two side regions of the magnetic core 1, respectively. The first flange 12 and the second flange 13 have the same first length L1. The material of the magnetic Core 1 can be manganese-zinc magnetic Core (Mn-Zn Core), nickel-zinc magnetic Core (Ni-Zn Core), Iron Powder Core (Iron Powder Core), Iron-nickel-molybdenum magnetic Core (Molypermalloy Powder (MPP) Core), Iron-silicon-aluminum magnetic Core (Sendust Core), Ferrite magnetic Core (Ferrite Core) or High magnetic Flux magnetic Core (High Flux Core).

The enclosure 2 may be a ferrite magnetic enclosure. The mask body 2 is used for covering the magnetic core 1, the mask body 2 comprises a bottom wall 21 and a plurality of side walls 22, the plurality of side walls 22 have the same second length L2, the mask body 2 is a structure with an open end and a closed end, the side walls 22 surround the bottom wall 21 to define an accommodating space, the accommodating space is used for accommodating the magnetic core 1, and the magnetic core 1 can be covered by the mask body 2. However, since the cover 2 covers the magnetic core 1 to form a closed magnetic circuit, the second length L2 is greater than or equal to two thirds of the first length L1, i.e. the length of each side wall 22 is greater than or equal to two thirds of the length of each flange (the first flange 12 and the second flange 13).

As shown in fig. 4-5, in practice, the sidewalls 22 may be four sidewalls 22, and the sidewalls 22 form a square structure around the periphery of the bottom wall 21; as shown in fig. 2-3, the sidewalls 22 can be two sidewalls 22, and the sidewalls 22 form an n-shaped structure around the bottom wall 21. It should be noted that, if the cover 2 is of an n-shaped structure, two side walls 22 of the cover 2 need to cover the area where the winding portion 11 is located, when the inductor is activated, the magnetic path of the inductor is emitted from one side of the winding portion 11, transmitted by using air as a medium, and then returned to the inductor from the other side of the winding portion 11, so that the magnetic path of the inductor is the closed magnetic path, and the density of the induced magnetic lines generated by the winding portion 11 is increased, thereby increasing the inductance.

Compared with the prior art, the magnetic circuit of the inductor is closed, and a completely closed cover body is not adopted to cover the magnetic core, so that the density of the induction magnetic lines is high, the number of winding turns of the coil is reduced under the same induction value, the weight of the inductor is reduced along with the reduction of the number of winding turns, the defects of larger integral volume and heavier weight of the inductor in the prior art can be changed, and the inductor has the advantages of the design characteristics of reducing the weight and the number of winding turns, so that the inductor structure is more suitable for the requirements of high power and small and light-weight inductors required on short and light-weight electronic products such as common mobile phones, digital cameras, notebook computers and Personal Digital Assistants (PDA).

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. An inductance for improving inductance and impedance value is characterized in that: comprises the following steps: the magnetic core comprises a winding part, a first flange and a second flange, wherein the winding part is positioned between the first flange and the second flange and is wound with a coil; and the cover body covers the magnetic core, the cover body comprises a bottom wall and a plurality of side walls, the side walls surround the periphery of the bottom wall to define an accommodating space, and the length of each side wall is greater than or equal to two thirds of the length of each flange.

2. The inductor of claim 1, wherein the inductor further comprises: the number of the side walls is four, and the side walls surround the periphery of the bottom wall to form a square structure.

3. The inductor of claim 1, wherein the inductor further comprises: the number of the side walls is two, and the side walls surround the periphery of the bottom wall to form a reverse-U-shaped structure.

4. The inductor of claim 1, wherein the inductor further comprises: the cover body is a ferrite magnetic cover body.