CN102290214A

CN102290214A - Inductor

Info

Publication number: CN102290214A
Application number: CN2011101010261A
Authority: CN
Inventors: 曾德辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-20
Filing date: 2011-04-20
Publication date: 2011-12-21

Abstract

The invention relates to the technical field of an inductor product, in particular to an inductor which has a simple structure and is convenient to assemble. The inductor comprises a bracket, a coil arranged on the bracket and magnetic cores matched with the bracket. The bracket is integrally formed by plastic material. The bracket is provided with two parallel side edges and a ring-shaped middle part positioned between the two side edges. The coil is coated in the middle part. The coil is connected with electrode plates fixed at the side edges. Upper and lower magnetic cores are provided and are respectively buckled at upper and lower ends of the bracket. A ring-shaped groove matched with the middle part on the bracket is formed at the buckling surface of the two magnetic cores. After the structure is adopted, the coil and the bracket are directly combined into one whole body in an injection molding mode, so that the whole structure is ensured to be stable; and the coil is packaged in the bracket, so that the using safety of the coil is ensured.

Description

A kind of inductance

Technical field:

The present invention relates to the inductor product technical field, refer in particular to a kind of simple in structure, the inductance of being convenient to assemble.

Background technology:

Inductor is the electromagnetic induction element that forms with insulated conductor (for example enamelled wire, cotton covered wire etc.) coiling, also is one of components and parts commonly used in the electronic circuit, and Related product is as being total to film filter etc.Inductor generally is made up of skeleton, insulated conductor winding, magnetic core or iron core etc., and particularly, the function of each part is as follows:

1, the support of skeleton general reference coiling.Fixed inductor that some volumes are bigger or adjustable inductance device (as oscillator coil, choking coil etc.), great majority are that enamelled wire (or cotton covered wire) is looped around on the skeleton, again with the inner chamber of the skeletons of packing into such as magnetic core or the copper heart, iron core, to improve its inductance value.

Skeleton normally adopts plastics, bakelite, pottery to make, and can make different shapes according to actual needs.

2, the insulated conductor winding is meant one group of coil with predetermined function, and it is the element of inductor.Winding has the branch of individual layer and multilayer.Single layer winding has close around two kinds of forms of (lead one circle suffers a circle during coiling) and spaced winding (during coiling between every circle lead all every certain distance) again; The multilayer winding have layering flat around, disorderly multiple around, universal winding etc.

3, magnetic core or iron core generally adopt nickel-zinc ferrite (NX series) or manganese-zinc ferrite materials such as (MX series), and it has multiple shapes such as " worker " font, cylindricality, hat, " E " shape, jar shape.

In addition, for performance and the steadiness that strengthens product, screen or encapsulation can also be set on inductance usually.But above-mentioned assembling mode is all responsible relatively, and the steadiness of product is relatively poor, and these all directly have influence on the performance of product.

Summary of the invention:

Technical problem to be solved by this invention is exactly the deficiency that overcomes existing product, provides a kind of simple in structure, the inductance of being convenient to assemble.

For solving the problems of the technologies described above, the present invention has adopted following technical scheme: this inductance comprises: support, the magnetic core that is arranged on the coil on the support and cooperates with support, described support adopts the one-body molded making of plastic material, this support has two parallel sides and the annular pars intermedia between dual-side, and in pars intermedia, be enclosed with coil, the two ends of coil are stretched out by the side two ends, constitute the electrode of inductance; Described magnetic core has two up and down, and it is fastened on the two ends up and down of support respectively, and the buckling surface of two magnetic cores forms the cannelure that cooperates with pars intermedia on the above-mentioned support; Above-mentioned coil adopts electric conducting material around formation.

In the technique scheme, described coil adopts the mode of injection mo(u)lding and support to form an integral body, and this coil is positioned at pars intermedia.

In the technique scheme, the conductor loop that described coil employing cross section is a circle is around formation, and the middle hole that has around formation of coil.

In the technique scheme, the conductor loop that described coil employing cross section is a flat pattern is around formation, and the middle hole that has around formation of coil.

In the technique scheme, described coil adopts bullion bending tablet, folding formation, and the middle hole that has around formation of coil, wherein at first sheet metal is bent to form some circular arcs, and then with the folding stack of circular arc, the middle porose coil of formation.

In the technique scheme, described magnetic core is rectangle, and its width is corresponding with spacing distance between the support dual-side, and the cannelure on the two magnetic core buckling surfaces is corresponding with the support pars intermedia, forms a center of circle corresponding with the pars intermedia centre bore in the middle of cannelure.

In the technique scheme, described coil adopts the bar shaped copper material.

In the technique scheme, after adopting Magnaglo and plastic cement mixes, described magnetic core forms by a firing.

After the present invention adopts said structure, directly adopt the mode of injection mo(u)lding to combine on coil and support and be an integral body, so just guaranteed the firm of total, and, guaranteed the safety in utilization of coil because coil is encapsulated in the support.In addition, adopt two structures that magnetic core fastens up and down, make whole inductance form an integral body, contour structures is more succinct, is convenient to install.

Additional benefit of the present invention adopts the copper bar bending exactly, is folded to form coil then, and the coil that adopts this method to make can obtain bigger inductance value.

Description of drawings:

Fig. 1 is a stereogram of the present invention;

Fig. 2 is a three-dimensional exploded view of the present invention;

Fig. 3 is the stereogram of coil in one embodiment of the invention;

Fig. 4 is the expanded view of coil among Fig. 3;

Fig. 5 is the schematic diagram that the present invention regulates inductance value;

Fig. 6 is the another kind of schematic diagram that the present invention regulates inductance value.

Embodiment:

Below in conjunction with accompanying drawing this full mold is further described:

See Fig. 1,2, the present invention includes: support 1, the magnetic core 3 that is arranged on the coil 2 on the support 1 and cooperates with support 1.

Support 1 adopts the plastic material injection mo(u)lding, and it has two

parallel side

11,12 and the annular pars intermedias 13 between dual-side 11,12.Dual-

side

11,12 is elongated, and it highly is higher than pars intermedia 13.Pars intermedia 13 is formed with a centre bore 15 ringwise in the middle of it.

Coil 2 is wrapped in the pars intermedia 13, and promptly coil 2 adopts the mode of injection mo(u)lding and support 1 to form an integral body.Arranged outside at

side

11,12 has electrode slice, and this electrode slice is formed by two ends 21, the 22

extended spot sides

11,12 of coil 2.

Magnetic core 3 has two up and down, and it is fastened on the two ends up and down of support 1 respectively, and the buckling surface of two magnetic cores 3 forms the cannelure 31 that cooperates with pars intermedia 13 on the above-mentioned support 1.Particularly, magnetic core 3 is rectangle, its width is corresponding with spacing distance between support 1 dual-

side

11,12, and the cannelure 31 on two magnetic cores, 3 buckling surfaces is corresponding with support 1 pars intermedia 13, in the middle of cannelure 31, form one with the corresponding center of circle 32 of pars intermedia 13 centre bores 15.Magnetic core 3 has just formed an integral body with support 1 so up and down, and whole inductance just forms the square type of an encapsulation.

After the present invention adopts said structure, directly adopt the mode of injection mo(u)lding to combine on coil 2 and support 1 and be an integral body, so just guaranteed the firm of total, and, guaranteed the safety in utilization of coil 2 because coil 2 is encapsulated in the support 1.In addition, adopt two structures that magnetic core 3 fastens up and down, make whole inductance form an integral body, contour structures is more succinct, is convenient to install.

See Fig. 3,4, coil 2 adopts the bending of bar shaped copper sheet, folding formation among the present invention, and have in the middle of the coil 2 around the hole 20 that forms, wherein at first with the sheet metal cyclic bending, and the zone in each bending forms a circular arc, and then the circular arc zone is folding successively, stack up porose 20 coil 2 in the middle of just forming.The coil that adopts this mode to constitute can obtain bigger inductance value.

Manufacture method of the present invention is as follows: at first, prepare coil 2 according to the method described above.

Secondly, with coil 2 with plastic material by injection mo(u)lding support 1, wherein said plastic material is: acrylonitrile-butadiene-styrene copolymer (ABS), styrene-acrylonitrile-acrylate ternary block polymer (AAS), styrene-acrylonitrile-haloflex ternary block polymer (ACS), ASA modified resin, unsaturated polyester (UP) BMC materials such as (BMC).

Then, the magnetic core powder is mixed with glue, and, fire, obtain magnetic core 3 by mould molding.The magnetic core powder can adopt, and comprising: materials such as iron powder, iron aluminum silicon powder, high magnetic flux powder (High Flux), permalloy powder (MPP), ferromagnetic oxide powder.

At last, with above-mentioned support 1 and magnetic core 3 combinations, and test, test passes is packed and is got final product.

Composite type of the present invention need be regulated inductance value, following method commonly used usually:

First method: Mechanical Method, adopt mill air gap mode to regulate, be about to the center of circle 32 parts and grind off some, order circular 32 forms spacing A with the end face of magnetic core 3, as shown in Figure 5;

Mode in second: apply one deck glue on the surface of magnetic core 3 (removing cannelure 31 parts), as shown in Figure 6, the dash area among Fig. 6 is the zone of the glue that is coated with.This glue is that glass powder particles is mixed the viscoid that the back forms with glue.

In addition, coil 2 of the present invention also can adopt usual manner to make, for example: coil 2 adopt cross sections be circular conductor loop around formation, and have holes 20 in the middle of the coil 2 around formation.Perhaps, to adopt cross sections be that the conductor loop of flat pattern is around formation for coil 2.

Certainly, the above is embodiments of the invention only, is not to limit the scope of the invention, and all equivalences of doing according to the described structure of the present patent application claim, feature and principle change or modify, and all should be included in the present patent application claim.

Claims

1. inductance, it comprises: support (1), the magnetic core (3) that is arranged on the coil (2) on the support (1) and cooperates with support (1) is characterized in that:

Described support (1) adopts the one-body molded making of plastic material, this support (1) has two parallel sides (11,12) and is positioned at annular pars intermedia (13) between the dual-side (11,12), and in pars intermedia (13), be enclosed with coil (2), the two ends of coil (2) (21,22) are stretched out by side (11,12) two ends, constitute the electrode of inductance;

Described magnetic core (3) has two up and down, and it is fastened on the two ends up and down of support (1) respectively, and the buckling surface of two magnetic cores (3) forms the cannelure (31) that cooperates with the last pars intermedia (13) of above-mentioned support (1);

Above-mentioned coil (2) adopts electric conducting material around formation.

2. a kind of inductance according to claim 1 is characterized in that: described coil (2) adopts the mode of injection mo(u)lding and support (1) to form an integral body, and this coil (2) is positioned at pars intermedia (13).

3. a kind of inductance according to claim 2 is characterized in that: described coil (2) adopt cross section for circular conductor loop around formation, and have around the hole (20) that forms in the middle of the coil (2).

4. a kind of inductance according to claim 2 is characterized in that: described coil (2) adopt cross section be the conductor loop of flat pattern around formation, and have around the hole (20) that forms in the middle of the coil (2).

5. a kind of inductance according to claim 2, it is characterized in that: described coil (2) adopts bullion bending tablet, folding formation, and have in the middle of the coil (2) around the hole (20) that forms, wherein at first sheet metal is bent to form some circular arcs, and then with the folding stack of circular arc, the coil (2) of porose (20) in the middle of forming.

6. according to any described a kind of inductance among the claim 1-5, it is characterized in that: described magnetic core (3) is rectangle, its width is corresponding with spacing distance between support (1) dual-side (11,12), cannelure (31) on two magnetic cores (3) buckling surface is corresponding with support (1) pars intermedia (13), forms a center of circle (32) corresponding with pars intermedia (13) centre bore (15) in the middle of cannelure (21).

7. a kind of inductance according to claim 6 is characterized in that: described coil (2) adopts the bar shaped copper material.

8. a kind of inductance according to claim 6 is characterized in that: form by a firing after described magnetic core (3) adopts Magnaglo and plastic cement mixes.