CN216054237U - Magnetic core for inductor - Google Patents

Abstract

The utility model discloses a magnetic core for an inductor, which relates to the field of magnetic cores and comprises a magnetic core upper yoke and a magnetic core lower yoke, wherein the magnetic core upper yoke is positioned above the magnetic core lower yoke, an iron wire mesh enclosure is arranged between the magnetic core upper yoke and the magnetic core lower yoke, the top of the magnetic core upper yoke is provided with a connecting interface, and the bottom of the magnetic core upper yoke is provided with a magnetic core column. According to the inductor, the iron wire mesh cover, the heat absorption sheets and the heat dissipation sheets are arranged, the iron wire mesh cover covers the part sensitive to magnetic interference, the magnetic conductivity of the air iron is improved, when a magnetic field passes through the iron wire mesh cover, the magnetic field can directly pass through the iron wire mesh cover to form a magnetic loop, and the part sensitive to magnetic interference cannot pass through the part sensitive to magnetic interference, so that the magnetic shielding performance of the magnetic core is improved, the inductor is normally used, when high current passes through the magnetic core column, the temperature of the magnetic core column rises, the heat absorption sheets absorb heat, and the heat dissipation sheets quickly dissipate the heat to the outside, so that the magnetic core column is free from loss, and the service life of the magnetic core is prolonged.

Description

Magnetic core for inductor

Technical Field

The utility model relates to the field of magnetic cores, in particular to a magnetic core for an inductor.

Background

Magnetic core: magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core materials. The manganese-zinc ferrite has the characteristics of high magnetic permeability and high magnetic flux density and has the characteristic of lower loss. The nickel-zinc ferrite has the characteristics of extremely high resistivity, low magnetic permeability of less than several hundred, and the like. Ferrite cores are used in coils and transformers for various electronic devices.

Present magnetic core, the magnetic shielding nature of magnetic core is poor, can receive the interference of external magnetic field when the magnetic core is installed inside high frequency inductor, thereby lead to the magnetic field of magnetic core unstable, influence inductor's normal work, cause unnecessary trouble, in addition, when the magnetic core is flowed through to high current, can cause the inside high temperature of magnetic core to generate heat, produce the loss to the magnetic core, and the quantity of most magnetic core posts all is fixed, can not adjust according to real-time in service behavior, lead to magnetic permeability when some to be bigger than normal, magnetic permeability is little in some times.

Disclosure of Invention

The utility model aims to: in order to solve the problems of poor magnetic shielding performance, heat generation and unstable magnetic permeability of a magnetic core, the magnetic core for the inductor is provided.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a magnetic core for inductor, includes magnetic core yoke and magnetic core yoke down, the magnetic core yoke is located the top of magnetic core yoke down, install the iron wire screen panel between magnetic core yoke and the magnetic core yoke down, the connection interface has been seted up at the top of magnetic core yoke, the magnetic core post is installed to the bottom of magnetic core yoke, the surface of magnetic core post is connected with the fin, solenoid has been cup jointed to the surface of fin, the inner wall of magnetic core post is provided with the heat absorption piece, first draw-in groove has been seted up to the bottom both sides of magnetic core yoke, the second draw-in groove has been seted up to the top both sides of magnetic core yoke down, the inner wall of first draw-in groove and second draw-in groove all is provided with the metal strip frame.

Preferably, the connecting interfaces are provided in plurality, and the plurality of connecting interfaces are arranged in an annular array.

Preferably, the first and second slots have the same slot depth, and are symmetrically arranged along the central line of the longitudinal axis of the core post.

Preferably, the core leg is detachably disposed on the upper yoke and the lower yoke through the first and second clamping grooves.

Preferably, the heat sink is attached to the outer wall of the magnetic core column, and the heat sink is made of a copper plate material.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the inductor, the iron wire net cover, the heat absorption sheets and the heat dissipation sheets are arranged, the iron wire net cover covers the part sensitive to magnetic interference, the magnetic conductivity of the air iron is improved, when a magnetic field passes through the iron wire net cover, the magnetic field can directly pass through the iron wire net cover to form a magnetic loop, and the part sensitive to magnetic interference cannot pass through the part sensitive to magnetic interference, so that the magnetic shielding performance of the magnetic core is improved, the inductor is normally used, when high current passes through the magnetic core column, the temperature of the magnetic core column rises, the heat absorption sheets absorb heat, and the heat dissipation sheets quickly dissipate the heat to the outside, so that the magnetic core column is free from loss, and the service life of the magnetic core is prolonged;

2. according to the utility model, through the arrangement of the first clamping groove, the second clamping groove and the metal strip frame, when the magnetic core is used, a user can select and install a plurality of magnetic core columns according to the connected magnetic field intensity, so that the magnetic conductivity is in a balanced state, when the magnetic core columns are installed, the top ends and the bottom ends of the magnetic core columns are respectively clamped into the first clamping groove and the second clamping groove, and the magnetic core columns are contacted with and adsorbed by the metal strip frames in the first clamping groove and the second clamping groove, so that the magnetic core columns are fixed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a cross-sectional view of a core leg according to the present invention;

fig. 4 is an enlarged schematic view of the structure at the position a of the present invention.

In the figure: 1. a core upper yoke; 2. a magnetic core lower yoke; 3. an iron wire net cover; 4. connecting an interface; 5. a magnetic core column; 6. an electromagnetic coil; 7. a heat sink; 8. a first card slot; 9. a second card slot; 10. a heat absorbing sheet; 11. a metal strip frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

Referring to fig. 1-4, a magnetic core for an inductor includes a magnetic core upper yoke 1, a magnetic core lower yoke 2, an iron wire mesh enclosure 3, a connection interface 4, a magnetic core column 5, an electromagnetic coil 6, a heat sink 7, a first clamping groove 8, a second clamping groove 9, a heat sink 10, and a metal strip frame 11; magnetic core yoke 1 is located the top of yoke 2 under the magnetic core, install iron wire screen panel 3 between yoke 2 under magnetic core yoke 1 and the magnetic core, connection interface 4 has been seted up at the top of magnetic core yoke 1, magnetic core stem 5 is installed to the bottom of magnetic core yoke 1, the surface connection of magnetic core stem 5 has fin 7, solenoid 6 has been cup jointed to the surface of fin 7, the inner wall of magnetic core stem 5 is provided with heat absorbing sheet 10, first draw-in groove 8 has been seted up to the bottom both sides of magnetic core yoke 1, second draw-in groove 9 has been seted up to the top both sides of yoke 2 under the magnetic core, first draw-in groove 8 all is provided with metal strip frame 11 with the inner wall of second draw-in groove 9.

Please refer to fig. 1-4, the connection interfaces 4 are provided in plural numbers, the connection interfaces 4 are arranged in an "annular array" shape, the connection interfaces 4 are convenient for connecting a plurality of lines, the first slot 8 and the second slot 9 have the same slot depth, the first slot 8 and the second slot 9 are symmetrically arranged along the central line of the longitudinal axis of the core rod 5, and the first slot 8 and the second slot 9 are convenient for the core rod 5 to be installed and fixed.

Please refer to fig. 1-4, the core column 5 is detachably disposed with the upper yoke 1 and the lower yoke 2 via the first and second slots 8 and 9, so that a user can select to mount several core columns 5 according to the intensity of the magnetic field, the heat sink 7 is attached to the outer wall of the core column 5, the heat sink 7 is made of copper plate, and the heat sink 7 dissipates the heat generated by the core column 5 rapidly.

The working principle is as follows: firstly, the iron wire mesh enclosure 3 covers the part sensitive to magnetic interference to improve the magnetic conductivity of the air iron, when a magnetic field passes through, the magnetic field can directly pass through the iron wire mesh enclosure 3 to form a magnetic loop, and can not pass through a magnetic interference sensitive part, so that the inductor can be normally used, when high current passes through the magnetic core column 5, the temperature of the magnetic core column 5 rises, the heat absorbing fins 10 absorb heat, the heat radiating fins 7 quickly dissipate the heat to the outside, so that the magnetic core column 5 is not lost, when the magnetic core is used, a user can select to install several magnetic core columns 5 according to the intensity of the switched-on magnetic field, thereby make magnetic conductivity be in a balanced state, when installation core limb 5, go into first draw-in groove 8 and second draw-in groove 9 respectively with the top and the bottom of core limb 5, the core limb 5 adsorbs with the contact of the metal strip frame 11 in first draw-in groove 8 and the second draw-in groove 9 mutually to it is fixed with core limb 5.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. A magnetic core for inductor, includes magnetic core upper yoke (1) and magnetic core lower yoke (2), its characterized in that: the magnetic core upper yoke (1) is located above the magnetic core lower yoke (2), an iron wire mesh enclosure (3) is installed between the magnetic core upper yoke (1) and the magnetic core lower yoke (2), a connecting interface (4) is arranged at the top of the magnetic core upper yoke (1), a magnetic core column (5) is installed at the bottom of the magnetic core upper yoke (1), the outer surface of the magnetic core column (5) is connected with a radiating fin (7), an electromagnetic coil (6) is sleeved on the outer surface of the radiating fin (7), the inner wall of the magnetic core column (5) is provided with a heat absorbing sheet (10), first clamping grooves (8) are arranged on two sides of the bottom of the magnetic core upper yoke (1), second clamping grooves (9) are arranged on two sides of the top of the magnetic core lower yoke (2), and metal strip frames (11) are arranged on the inner walls of the first clamping grooves (8) and the second clamping grooves (9).

2. A magnetic core for an inductor according to claim 1, wherein: the connecting interfaces (4) are arranged in a plurality of annular arrays, and the connecting interfaces (4) are arranged in the annular arrays.

3. A magnetic core for an inductor according to claim 1, wherein: the slotting depth of the first slot (8) is the same as that of the second slot (9), and the first slot (8) and the second slot (9) are symmetrically arranged along the central line of the longitudinal axis of the magnetic core column (5).

4. A magnetic core for an inductor according to claim 1, wherein: the magnetic core column (5) is detachably arranged with the magnetic core upper yoke (1) and the magnetic core lower yoke (2) through the first clamping groove (8) and the second clamping groove (9).

5. A magnetic core for an inductor according to claim 1, wherein: the radiating fins (7) are attached to the outer wall of the magnetic core column (5), and the radiating fins (7) are made of copper plates.

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