CN202473527U

CN202473527U - A magnetic component

Info

Publication number: CN202473527U
Application number: CN201120507197XU
Authority: CN
Inventors: 任晓廷; 钟梓剑
Original assignee: Sumida Electric HK Co Ltd
Current assignee: Sumida Electric HK Co Ltd
Priority date: 2011-12-08
Filing date: 2011-12-08
Publication date: 2012-10-03
Anticipated expiration: 2021-12-08

Abstract

The utility model discloses a magnetic component. A magnetic core and a coil sleeved outside the magnetic core are disposed in a magnetic powder-resin compound housing; the magnetic core has a first end and a second end; binding posts of the coil are introduced to the outside of the magnetic powder-resin compound housing from the second end of the magnetic core; and the axial projected area of the first end of the magnetic core is lower than that of the second end. Magnetic powder-resin compound can be poured in the gap between the first end and the coil and thus can better enter into the gaps in the coil, so the utilization of effective magnet space is improved and overall properties of the magnetic component is improved.

Description

A kind of magnetic elements

Technical field

The utility model relates to a kind of magnetic elements.

Background technology

A kind of I-shaped inductance is arranged in the prior art and add the composite type inductance of radome, it is to the underutilization of the magnetic useful space; Other has a kind of press-powder formula inductance, uses the die punching press, and magnetic is encased coil is whole, has effectively utilized the space, but rapid wear hurts coil during punching press, causes the quality problem of short circuit; Reported a kind of inductor in certain patent documentation; It is the coiling enamelled wire on magnetic core; The magnetic core outside is perfused with magnet powder-resin compound, though it has improved the utilization of the magnetic useful space and has been difficult for being damaged to enamelled wire, can not guarantee between the slit of enamelled wire, also to fill full magnet powder-resin compound; Because enamelled wire is closely to be wound on the magnetic core, magnet powder-resin compound is difficult to be filled in the slit of the enamelled wire between magnetic core and the enamelled wire.

Summary of the invention

The purpose of the utility model is to overcome the defective of prior art, provides a kind of and can further improve the magnetic elements that the magnetic useful space is utilized.

The technical solution of the utility model is: a kind of magnetic elements; In the magnet powder-resin compound shell, be provided with magnetic core and be set in the coil outside the magnetic core; Magnetic core has first end and second end; The binding post of coil causes outside the magnet powder-resin compound shell from second end of magnetic core, and the axial projective area of first end of said magnetic core is less than the axial projective area of second end.

Coil is set in the magnetic core outside, because of second end of magnetic core is thicker than first end, so can have the space between first end and the coil; First end of coil and magnetic core is upwards put into the mould of pre-set shape; From mould top perfusion magnet powder-resin compound; Magnet powder-resin compound can enter in the slit between first end and the coil; Thereby enter into better in the slit between the coil, magnet powder-resin compound forms the magnet powder-resin compound shell after solidifying, and sheds mould and promptly obtains said magnetic elements finished product.Above-mentioned magnetic elements has further improved the utilization to the magnetic useful space, has strengthened the overall performance of magnetic elements.

First end of said magnetic core is cone, Rotary-table or cylinder, and second end of said magnetic core is Rotary-table or cylinder.

Magnetic core can have different shapes; Identical is; All have the space between first end of the magnetic core of different shape and the coil, during from first end top perfusion magnet powder-resin compound, magnet powder-resin compound can enter in the slit between first end and the coil; Thereby enter into better in the slit between the coil, reach the purpose of raising the utilization of the magnetic useful space.

Second end of said magnetic core is provided with lip portions, and lip portions is provided with two breach that supply said binding post to pass through.Set lip portions is convenient to laying of coil and fixing; Through two binding posts of set breach on the lip portions, the electrode that can be used as magnetic elements uses.

The utility model has the advantages that: magnet powder-resin compound can be filled in the slit between first end and the coil; Thereby enter into better in the slit between the coil; Further improved utilization, strengthened the overall performance of magnetic elements the magnetic useful space.

Description of drawings

Fig. 1 is the generalized section of the utility model embodiment magnetic elements;

Fig. 2 is the utility model embodiment magnetic core plan structure sketch map;

Fig. 3～6 are the sketch map of several kinds of core structures of the utility model embodiment;

1. coil, 2. magnetic core, 3. first end, 4. second end, 5. lip portions, 6. breach, 7. magnet powder-resin compound shell, 8. binding post.

Embodiment

Embodiment:

Consult Fig. 1～2; A kind of magnetic elements; Comprise magnetic core 2, coil 1 and magnet powder-resin compound shell 7 with first end 3 and second end 4; Magnet powder-resin compound shell 7 set inside have magnetic core 2 and the coil 1 that is set in magnetic core 2 outsides, and the binding post 8 of coil 1 causes outside the magnet powder-resin compound shell 7 from second end 4 of magnetic core 2, and the axial projective area of first end 3 of said magnetic core 2 is less than the axial projective area of second end 4.

Consult Fig. 5, first end 3 of magnetic core 2 is the less cylinder of diameter, and second end 4 is the bigger cylinder of diameter; Consult Fig. 3,4 and 6, first end 3 of magnetic core 2 is cone or Rotary-table, and second end 4 can also be Rotary-table and cylinder.

Second end 4 of magnetic core 2 is provided with lip portions 5, and said lip portions 5 is provided with two breach 6 that supply binding post 8 to pass through.

Any one of the amalgam that said magnetic core 2 is sintered body, magnetic material and the resin of magnetic material, the injection molding body of resin or pottery.The magnetic of forming magnet powder-resin compound shell 7 can be any one or the mixture between them of ferrite, metal dust, alloy powder.

When beginning to prepare magnetic elements; Coil 1 is set in magnetic core 2 outsides; Two binding posts 8 of coil 1 are drawn from the breach 6 on second end, 4 lip portions 5 of magnetic core 2, because of second end, 4 to the first ends 3 of magnetic core 2 are thick, so can have the space between first end 3 and the coil 1; First end 3 of coil 1 and magnetic core 2 is upwards put into the mould of pre-set shape; From mould top perfusion magnet powder-resin compound; Magnet powder-resin compound can enter in the slit between first end 3 and the coil 1; Thereby enter into better in the slit between the coil 2, magnet powder-resin compound forms magnet powder-resin compound shell 7 after solidifying, and sheds mould and promptly obtains said magnetic elements finished product.

Above-listed detailed description is specifying to one of the utility model possible embodiments; This embodiment is not the claim in order to restriction the utility model; Allly do not break away from the equivalence that the utility model does and implement or change, all should be contained in the claim of this case.

Claims

1. magnetic elements; In the magnet powder-resin compound shell, be provided with magnetic core and be set in the coil on the magnetic core; Magnetic core has first end and second end; The binding post of coil causes outside the magnet powder-resin compound shell from second end of magnetic core, it is characterized in that: the axial projective area of first end of said magnetic core is less than the axial projective area of second end.

2. a kind of magnetic elements according to claim 1 is characterized in that: first end of said magnetic core is cone, Rotary-table or cylinder, and second end of said magnetic core is Rotary-table or cylinder.

3. a kind of magnetic elements according to claim 1 and 2 is characterized in that: second end of said magnetic core is provided with lip portions, and lip portions is provided with two breach that supply said binding post to pass through.