TWM595876U - Inductor with increased inductance and impedance - Google Patents

Abstract

An inductor for improving inductance value and impedance value includes: a magnetic core and a cover. The magnetic core includes a winding part, a first flange and a second flange, the winding part is located between the first flange and the second flange, and the winding part is provided with a coil; and The cover body covers the magnetic core, the cover body includes a bottom wall and a plurality of side walls, the side walls define a receiving space around the periphery of the bottom wall, and the length of each side wall is greater than or equal to that of each flange Two thirds of the length. By covering the magnetic core with the cover, the inductor forms a closed magnetic circuit to avoid leakage of the magnetic field and the length of each side wall is greater than or equal to two-thirds of the length of each flange, so that the inductance can be achieved The purpose of increasing the inductance value is to reduce the interference to other inductances.

Description

Inductance to increase inductance and resistance

This creation is about an inductance that improves the inductance and impedance values, especially an inductance in which a magnetic core is covered by a cover to form a closed magnetic circuit.

Inductors will have different names depending on their appearance and function. The enameled wire is wound in multiple turns and is called a coil according to its appearance. Used to provide greater reactance to high frequencies, passing DC or low frequencies, it is called a choke according to its function. Combined with ferromagnetic materials, the inductance installed in transformers, motors and generators is called winding. Inductors are also commonly used in circuit boards with 3C components.

Please refer to the first figure, which is a conventional inductor structure, which uses a winding part 200 in the middle of a magnetic core 100 to wrap a coil, and has flanges 300 on both sides of the magnetic core 100 to prevent the coil from sliding out. However, in order to prevent the leakage of the induced magnetic field and affect the inductance value, this kind of inductor structure is made of a fully enclosed cover 400 outside the inductor to block the inductive outward diffusion of the induced magnetic field lines, and thus a completely closed cover outside the inductor to block The way of inducing magnetic lines of force will cause the overall size of the inductor to become larger and heavier, which is less suitable for thin and light electronic products, so it is necessary to improve; therefore, how to eliminate the above defects and provide a small size And the magnetic circuit is a closed type inductive structure, which is where the technical difficulties that the creator of this case wants to solve.

In view of the practice, the creation is to solve and improve the existence of the practice Problems and deficiencies.

In order to achieve the above purpose, this creation provides an inductance to increase the inductance and impedance value, which includes: a magnetic core and a cover. The magnetic core includes a winding part, a first flange and a second flange, the winding part is located between the first flange and the second flange, and the winding part is provided with a coil; and The cover body covers the magnetic core, the cover body includes a bottom wall and a plurality of side walls, the side walls define a receiving space around the periphery of the bottom wall, and the length of each side wall is greater than or equal to that of each flange Two thirds of the length.

Preferably, the side walls are four side walls, and the side walls form a square structure around the periphery of the bottom wall.

Preferably, the side walls are two side walls, and the side walls form a zigzag structure around the periphery of the bottom wall.

Preferably, the cover is a ferrite magnetic cover.

In this creation, the magnetic core is covered by the cover, so that the inductor forms a closed magnetic circuit to avoid leakage of the magnetic field, so that the inductance can achieve the purpose of increasing the inductance value, and can reduce interference with other inductances. Furthermore, the accommodating space defined by the bottom wall and the side wall of the cover body needs to be sufficient to cover the magnetic core, so the length of each side wall is greater than or equal to two-thirds of the length of each flange to effectively limit The magnetic circuit of the inductor.

〔Convention〕

100: magnetic core

200: winding part

300: flange

400: cover

〔This creation〕

1: magnetic core

11: Winding Department

12: First flange

13: Second flange

2: cover

21: bottom wall

22: Side wall

L1: the first length

L2: second length

The first figure is a schematic diagram of a conventional inductor structure.

The second figure is the first schematic diagram of the creation of an inductance that enhances the inductance and impedance values.

The third picture is the first schematic diagram of the creation of the inductance that enhances the inductance and impedance values. Figure.

The fourth diagram is a second schematic diagram of the creation of an inductance that enhances the inductance and impedance values.

The fifth diagram is a second schematic diagram of the creation of an inductor that enhances the inductance value and the impedance value, and the cover body covers the magnetic core.

In order for your examiners to easily and concisely understand the other features and advantages of this creation and the effects achieved by them, the creation is accompanied by the drawings, which are explained in detail as follows:

Please refer to the second and third figures, this creation provides an inductance to increase the inductance and impedance, which includes: a magnetic core 1 and a cover 2.

The magnetic core 1 includes a winding part 11, a first flange 12 and a second flange 13. The winding part 11 is located between the first flange 12 and the second flange 13. The winding The part 11 is provided with a coil to constitute the inductance, wherein the winding method of the coil is not a characteristic of this creation, and will not be repeated here. Specifically, the appearance of the magnetic core 1 may have an I-shape, the winding portion 11 is disposed in the middle region of the magnetic core 1, and the first flange 12 and the second flange 13 are respectively disposed on the magnetic core The area on both sides of the core 1. The first flange 12 and the second flange 13 have the same first length L1. The material of the magnetic core 1 may be a manganese zinc core (Mn-Zn Core), a nickel zinc core (Ni-Zn Core), an iron powder core (Iron Powder Core), an iron nickel molybdenum core (Molypermalloy) Powder (MPP) Core), a ferrosilicon core (Sendust Core), a ferrite core (Ferrite Core) or a high flux core (High Flux Core).

The cover 2 may be a ferrite magnetic cover. The cover body 2 is used to cover the magnetic core 1. The cover body 2 includes a bottom wall 21 and a plurality of side walls 22. The plurality of side walls 22 have the same second length L2. The cover body 2 has an opening at one end With the structure closed at the other end, the side walls 22 define an accommodating space around the periphery of the bottom wall 21, and the accommodating space is used to receive the magnetic core 1 so that the cover The body 2 can cover the magnetic core 1. However, since the cover body 2 can cover the magnetic core 1 to form a closed magnetic circuit for the inductor, the second length L2 needs to be greater than or equal to two thirds of the first length L1, that is, each The length of the 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).

Please refer to the fourth and fifth figures. In implementation, the side walls 22 may be four side walls 22, and the side walls 22 form a square structure around the periphery of the bottom wall 21; As shown in the three figures, the side walls 22 can be two side walls 22. The side walls 22 form a zigzag structure around the periphery of the bottom wall 21. It is also worth noting that if the cover 2 has a zigzag structure, the two side walls 22 of the cover 2 need to cover the area where the winding portion 11 is located, so that when the inductor is activated, the magnetic path of the inductor is routed by the winding The wire portion 11 is emitted on one side and transmitted through air, and then returned to the inductor from the other side of the winding portion 11, so that the magnetic circuit that reaches the inductance is the closed magnetic circuit, so the winding portion 11 is The line density of the induced magnetic force becomes higher, thereby increasing the inductance value.

Compared with the conventional technology, the magnetic circuit of the inductance of this creation is closed and does not use a fully enclosed cover 2 to cover the magnetic core 1, so the line density of the induced magnetic force becomes higher. Under the same inductance value, the coil needs to be wound The number becomes smaller. With the reduction of the number of windings, the weight of the inductor is also reduced, and the conventional technology is improved. The overall size of the inductor is larger and the weight is heavier, and it has the design characteristics of reducing the weight and the number of windings. The advantages of this case, the inductance structure of this case is more suitable for general mobile phones, digital cameras, notebook computers, personal digital assistants (PDA and other small and light electronic products such as PDA needs high power and small lightweight inductor requirements.

The above discussed are only the preferred embodiments of this creation, and are not intended to limit the scope of the implementation of this creation; therefore, transformations of equivalent shapes, structures, or combinations made within the spirit and scope of this creation should all be Covered in the scope of patent application for this creation.

1: magnetic core

11: Winding Department

12: First flange

13: Second flange

2: cover

21: bottom wall

22: Side wall

L1: the first length

L2: second length

Claims (4)

An inductance for improving inductance and impedance values, including: A magnetic core, including a winding part, a first flange and a second flange, the winding part is located between the first flange and the second flange, and the winding part is provided with a coil; as well as A cover body covering the magnetic core, the cover body including a bottom wall and a plurality of side walls, the side walls define a receiving space around the periphery of the bottom wall, and the length of each side wall is greater than or equal to each flange Two thirds of the length. The inductance for improving the inductance value and the impedance value as described in item 1 of the patent application scope, wherein the side walls are four side walls, and the side walls form a square structure around the periphery of the bottom wall. The inductor for improving the inductance and impedance as described in item 1 of the patent application scope, wherein the side walls are two side walls, and the side walls form a zigzag structure around the periphery of the bottom wall. The inductance for increasing the inductance and impedance as described in item 1 of the patent application scope, wherein the cover is a ferrite magnetic cover.

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