CN212647992U

CN212647992U - Novel inductance element

Info

Publication number: CN212647992U
Application number: CN202021445994.5U
Authority: CN
Inventors: 尹向阳; 张洪祥
Original assignee: Mornsun Guangzhou Science and Technology Ltd
Current assignee: Mornsun Guangzhou Science and Technology Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-03-02
Anticipated expiration: 2030-07-21

Abstract

The utility model provides a novel inductance element, includes magnetic core, coil, shell and colloid, the magnetic core is T type magnetic core, the shell is soft magnet shell, and T type magnetic core comprises base, center pillar and boss, and the coil assembly is on the center pillar of T type magnetic core and be less than the boss, and the electrode is makeed into in the recess in the T type magnetic core base outside to coil both ends, and T type magnetic core assembles with soft magnet shell, fills and fixes with the colloid in the cavity that soft magnet shell and T type magnetic core enclose. The utility model discloses a magnetic core, coil, soft magnet shell are whole to be the assembly and add the fixed technology of colloid, can enough avoid integrated into one piece inductance pressing process unstable because of the performance that the coil dislocation leads to effectively, and external force is to the destruction of coil when preventing the suppression again, optimizes the big performance defect of leakage inductance that traditional wire winding inductance leads to because of magnetic core open loop structure simultaneously to can carry out the performance regulation through the clearance size of adjustment magnetic core and shell according to the user demand.

Description

Novel inductance element

Technical Field

The utility model relates to an electronic component technical field especially relates to an inductance element.

Background

There are many methods for manufacturing inductors, and there are many types of inductor structures manufactured by different methods.

The integrally formed inductor is formed by pressing and forming an air-core coil, a magnetic core, terminals and insulating treatment powder. Because the coil is generally formed by stacking a plurality of layers (straight cylinder shape), slip dislocation is easy to occur in the process of powder high-pressure molding, the shape of the coil is changed, and the change cannot be controlled, the inductance value of the inductor after molding has a range, and the larger the deformation is, the farther the inductance value deviates from the central value; the enamel layer is easy to damage in the process of coil slip dislocation deformation, so that the poor inductance layer is caused; on the other hand, the inductance of the integrally formed inductor with the same volume and the same number of turns is far lower than that of the traditional magnetic core winding inductor due to the adoption of powder molding of insulation treatment.

The traditional winding inductance with a magnetic core is characterized in that a coil is wound on a sintered magnetic core, two ends of the coil are fixed at two ends of the magnetic core through electroplating, tin dipping and other modes to form electrodes, and the magnetic core is of a rod-shaped or I-shaped integrated structure. Since the outer part of the winding limiting magnetic core is mostly of an open-loop structure, the leakage inductance is increased, and the inductance is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that compensate above-mentioned prior art's defect, provide a novel inductance component.

A novel inductance element comprises a magnetic core, a coil, a shell and a colloid for fixing and filling the shell and the magnetic core, wherein the magnetic core is a T-shaped magnetic core, the T-shaped magnetic core consists of a base, a middle column and a boss, two grooves are formed in the outer side of the base, and the middle column and the boss are sequentially arranged on the base from top to bottom; the shell is a soft magnetic shell, and the top of the soft magnetic shell is provided with an opening at the position corresponding to the T-shaped magnetic core boss; the coil assembly is on the center pillar of T type magnetic core and be less than the boss, and the electrode is made into in the recess of T type magnetic core base outside to coil both ends are fixed, and T type magnetic core assembles with the soft magnet shell, packs and fixes with the colloid in the cavity that soft magnet shell and T type magnetic core enclose.

Preferably, the bottom of the soft magnetic shell is flush with the T-shaped magnetic core or lower than the base of the T-shaped magnetic core.

Preferably, a gap is reserved between the inner wall of the soft magnet shell and the base of the T-shaped magnetic core, and the gap between the T-shaped magnetic core and the soft magnet shell can be adjusted to realize adjustment of inductance.

Preferably, the housing is square in shape.

Preferably, the soft magnet shell is formed by pressing, sintering or compression molding of the soft magnet.

Preferably, the coil is a cylindrical enameled coil or a flat self-adhesive enameled coil.

The beneficial effects of the utility model reside in that: magnetic core, coil, shell are all for the assembly adds the fixed technology of colloid, can enough avoid integrated into one piece inductance pressing process unstable because of the performance that the coil dislocation leads to effectively, can prevent the destruction of external force to the coil during suppression again, optimize the big performance defect of leakage inductance that traditional wire winding inductance leads to because of the magnetic core open loop structure simultaneously to can carry out the performance regulation through the clearance size of adjustment magnetic core and shell according to the user demand.

Drawings

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

fig. 2 is a schematic diagram of the T-shaped magnetic core structure of the present invention;

fig. 3 is a schematic diagram of the structure of the coil winding of the present invention assembled to the center pillar of the T-shaped core;

FIG. 4 is a schematic diagram of the structure of the soft magnetic housing of the present invention;

FIG. 5 is a schematic view of the bottom assembly gap structure of the present invention;

t-shaped magnetic core 10, T-shaped magnetic core center post 11, T-shaped magnetic core boss 12, T-shaped magnetic core base 13, groove 14, coil 20, electrode 21, soft magnetic body shell 30, opening 31, colloid 40 and gap 50.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and accompanying drawings:

as shown in fig. 1 to 5, a novel inductance component includes a T-shaped magnetic core 10, a coil 20, a soft magnetic outer shell 30 and a colloid 40 for fixing and filling the soft magnetic outer shell 30 and the T-shaped magnetic core 10, the T-shaped magnetic core 10 is composed of a base 11, a center pillar 12 and a boss 13, two grooves 14 are arranged on the outer side of the base 13, the base 13 is sequentially provided with the center pillar 12 and the boss 13, the top of the soft magnetic outer shell 30 is provided with an opening 31 matched with the boss 13 of the T-shaped magnetic core in a combined manner, the coil 20 is assembled on the center pillar 12 of the T-shaped magnetic core and is lower than the boss 13, two ends of the coil 20 are fixed in the grooves 14 on the outer side of the base 11 of the T-shaped magnetic core 10 and connected with a metal connecting sheet to form electrodes 21, the T-shaped magnetic core 10 is assembled with the soft magnetic outer shell 30, and a cavity surrounded.

After the T-shaped magnetic core 10 is provided with the coil 20 and sleeved with the soft magnetic shell 30, the bottom of the soft magnetic shell 30 is flush with the base 11 of the T-shaped magnetic core or lower than the base 11 of the T-shaped magnetic core, and a gap 50 is left between the inner wall of the soft magnetic shell 30 and the base 13 of the T-shaped magnetic core, and the size of the gap 50 is designed according to the performance requirement of the inductance element. The size of the base 13 of the T-shaped magnetic core is reduced, the gap 50 is increased, the air gap is increased, the inductance is reduced, and otherwise the inductance is increased.

The T-shaped magnetic core 10 is made by adopting any one or more of pressing, sintering and forming processes of manganese zinc, nickel zinc, carbonyl iron powder, iron-nickel alloy, iron silicon, iron-silicon-chromium, iron-silicon-aluminum, molybdenum permalloy, nanocrystalline and amorphous.

The boss 13 of the T-shaped magnetic core 10 serves as a limit when assembled with the soft magnetic housing 30.

The soft magnet shell 30 is formed by any one or more of manganese zinc, nickel zinc, carbonyl iron powder, iron-nickel alloy, iron silicon, iron-silicon-chromium, iron-silicon-aluminum, molybdenum permalloy, nanocrystalline and amorphous through compression sintering or compression molding.

The coil 20 uses a cylindrical enameled wire or a flat enameled coil.

The colloid 40 is any one or more of epoxy resin, silicon resin, phenolic resin, polyimide, polyphenylene sulfide, melamine resin, epoxy resin doped with soft magnetic powder, silicon resin, phenolic resin, polyimide, polyphenylene sulfide, and melamine resin.

Variations and modifications to the above-described embodiments may also occur to those skilled in the art, in light of the above teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described, but rather, several modifications and variations of the invention are possible within the scope of the invention as defined in the claims.

Claims

1. A novel inductive component, characterized by: the magnetic core is a T-shaped magnetic core, the T-shaped magnetic core consists of a base, a middle column and a boss, two grooves are formed in the outer side of the base, and the middle column and the boss are sequentially arranged on the base from top to bottom; the shell is a soft magnetic shell, and the top of the soft magnetic shell is provided with an opening at the position corresponding to the T-shaped magnetic core boss; the coil assembly is on the center pillar of T type magnetic core and be less than the boss, and the recess inscription that the coil both ends were fixed to the T type magnetic core base outside is made into the electrode, and the T type magnetic core is assembled with soft magnet shell, fills and fixes with the colloid in the cavity that soft magnet shell and T type magnetic core enclose.

2. The novel inductive component of claim 1, wherein: the bottom of the soft magnetic shell is flush with the T-shaped magnetic core or lower than the base of the T-shaped magnetic core.

3. The novel inductive component of claim 2, wherein: a gap is reserved between the inner wall of the soft magnet shell and the T-shaped magnetic core base, and the gap between the T-shaped magnetic core and the soft magnet shell can be adjusted to achieve adjustment of inductance.

4. The novel inductive component of claim 1, wherein: the shape of the shell is square.

5. The novel inductive component of claim 1, wherein: the soft magnet shell is formed by pressing, sintering or compression molding of a soft magnet.

6. The novel inductive component of claim 1, wherein: the coil is cylindrical enameled coil or flat self-adhesion type enameled coil.