CN202018874U - Coiling structure of power inductor - Google Patents
Coiling structure of power inductor Download PDFInfo
- Publication number
- CN202018874U CN202018874U CN2011200006391U CN201120000639U CN202018874U CN 202018874 U CN202018874 U CN 202018874U CN 2011200006391 U CN2011200006391 U CN 2011200006391U CN 201120000639 U CN201120000639 U CN 201120000639U CN 202018874 U CN202018874 U CN 202018874U
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- lead
- power inductor
- winding
- core
- winding region
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Abstract
The utility model discloses a coiling structure of a power inductor, which comprises a magnet core and a lead, wherein a shaft core is formed in the middle of the magnet core; the periphery of the shaft core is a coiling area; and the lead is wound around the shaft core and is sequentially wound outwards from the inside of the coiling area. Lead outlet sections at the two ends of the lead are extended from the outer layer of a coil formed by the winding of the lead in the coiling area, so the space of the coiling area of the magnet core is more effectively utilized, the turn of the winding is increased, the inductance value is increased or the diameter of the lead is increased, and then the current of a load is increased.
Description
Technical field
The utility model relates to the technical field of power inductor, relates in particular to a kind of winding structure that is applied to the power inductor of slimming.
Background technology
As shown in Figures 1 and 2, the structure of power inductor mainly is to utilize an iron core 10 to be twined one group of coil 11 at present, these coil 11 peripheries then by a spacer 12 (as magnetic glue) sealing, the going out line segment 111,112 and extend out of this coil 11 two ends in iron core 10 bottom surfaces, and utilize scolding tin district 13 to paste sealing again, utilize two scolding tin districts 13 of iron core 10 bottom diverse locations to form two external electrode tips of this power inductor.
The winding mode of this type of power inductor is the single shaft canoe, be that coil is when twining, one end of lead is fixing, the other end utilizes machine to drive and is wound in 10 core peripheries of magnetic core, because in order to keep inductance value, the number of turn of twining has certain limitation, so can make coil 11 skewness of magnetic core.As shown in Figure 1, the initial line segment 113 of this coil 11 is to maintain static in the embodiment of existing power inductor, therefore occupied the part space in the winding region, the lead of follow-up winding only can be stacked over initial line segment 113 under position (shown in left one side of something among the figure), review all the other regional leads of winding region and then can wind the line in regular turn (shown in the right one side of something among the figure), therefore in the embodiment of existing power inductor initial line segment 113 to stretch out be exactly line segment 111.When the winding region space of power inductance electrical equipment is big, this problems affect is less, but when having power inductance electrical equipment electricity minimum dimension now by 5*5*2mm, when requiring to 5*5*1mm, the problem at this winding mode place is with even more serious, because when whole height dwindles, represent the height H value of winding region also to diminish, because this coil turn becomes value to be directly proportional with inductance, when if diameter of wire is excessive, desiring to keep under the situation of high inductance value, coil turn numerical value also must be kept some, and the external diameter after so coil twines must surpass the magnetic core size, do not meet product requirement, therefore the diameter of lead just must dwindle, and dwindles but work as lead, and institute's energy loaded current value is also limited synchronously.
The utility model content
Main purpose of the present utility model provides a kind of winding structure of power inductor, mainly be to adopt coaxial in a magnetic core place and lead is twined on it around mode, make each coil partly of winding region in the magnetic core twine the number of turn and number of plies unanimity, so can in the winding region of same space, twine more multiturn number, to promote inductance value, perhaps use the thicker lead in line footpath instead and twine,, become high-power inductor to improve the current value that can carry.
For reaching above-mentioned purpose, the utility model is a kind of winding structure of power inductor, include magnetic core and lead, this lead is to be wound in a core periphery, by outwards curling in regular turn in the winding region, making the line segment that at lead two ends is to be extended out by the coil skin that lead is entwined by being positioned at winding region; Change speech, radially to analyze the winding situation at each position, the lead at each position twines the number of turn and the number of plies all equates or the phase difference is no more than 2 in winding region.
Description of drawings
Fig. 1 is the profile of existing power inductor;
Fig. 2 is the upward view of existing power inductor, and wherein the scolding tin position is illustrated with hatching;
Fig. 3 is a structural representation of the present utility model;
Fig. 4 uses technology of the present utility model and the vertical view of the power inductor made;
Fig. 5 is the cutaway view of Fig. 4;
Fig. 6 is the floor map of the coil holder that the utility model adopted.
Each description of reference numerals is as follows among the figure:
10 iron cores, 11 coils
111 go out line segment 112 goes out line segment
113 initial line segments, 13 scolding tin districts
21 cores of 2 magnetic cores
22 winding regions, 3 leads
31 go out line segment 32 goes out line segment
4 spacers, 5 metal electrodes
6 metal electrodes, 7 coil holders
71 geosutures, 72 geosutures
Embodiment
Following conjunction with figs. and Reference numeral are done more detailed description to execution mode of the present utility model, thereby those skilled in the art can be implemented after studying this specification carefully according to this.
Fig. 3 is a structural representation of the present utility model, among the figure only lead represent that with hatching magnetic core is then represented with end view.Power inductor winding structure of the present utility model mainly includes magnetic core 2, lead 3, and the less axle core 21 of a size is arranged in the middle of this magnetic core 2, and these core 21 peripheries are winding region 22.This lead 3 is to be wound in a core 21 peripheries, outwards curl in regular turn by winding region 22 internal layers, since lead 3 winding modes of the present utility model be adopt coaxial and around, soon lead 3 two ends utilize machine to drive synchronously and are wound in simultaneously a core 21 peripheries in regular turn, just expand outwardly gradually after making internal layer twine consolidation, increase coil turn and the external diameter be entwined, make the going out line segment 31 and go out the skin that line segment 32 all is positioned at winding around of two ends of this lead 3 of the utility model at last; Change speech, curl the number of turn and the number of plies up and down by radially analyzing lead in this winding region 22, each position should be all equal, but because of going out the difference of line position, and lead that might different parts curls the number of turn or number of plies phase difference may be 1, but can be above 2.
Above-mentioned part only is the coiling explanation of power inductor of the present utility model, in fact when making power inductor, can make structure different because of the different capacity inductor.Fig. 4 and Fig. 5 are the vertical view and the profile of the power inductor of this enforcement, and its structure also includes spacer 4 and metal electrode 5,6 except magnetic core 2 and lead 3.This spacer 4 is to be filled in the winding region 22 of magnetic core 2, and lead 3 formed coils are sealed in magnetic core 2 inside, and the purpose of this spacer 4 is to prevent that the induced magnetism line of force from leaking outside and influence inductance value.The going out line segment 31,32 and can extend out of this lead 3 two ends welds mutually with metal electrode 5 and metal electrode 6 respectively in addition.This metal electrode 5 and metal electrode 6 are to be bent into the L type, and these magnetic core 2 bottom surfaces are to paste mutually with metal electrode 5 and metal electrode 6.And two external electrode tips of this power inductor of present embodiment are exactly metal electrode 5 and the metal electrode 6 that utilizes magnetic core 2 bottom surfaces.
Next make a simple explanation with regard to the manufacturing process of the power inductor of this example, as shown in Figure 6, this metal electrode 5 and metal electrode 6 are a Boping shape originally, and be the some of a coil holder 7, this coil holder 7 is a sheet metal band, utilize punching press to form required shape, drive for automatic machinery conveniently to add man-hour.This coil holder 7 is provided with geosutures 71,72, makes things convenient for metal electrode 5 and metal electrode 6 work in-processes to peel off from coil holder 7 places.Whole work flow is: metal electrode 5 on magnetic core 2 bottom surfaces and the coil holder 7 and metal electrode 6 are pasted together (as the centre position state among the figure), after the sclerosis to be dried, magnetic core 2 is taken off at 7 places from coil holder, this moment, metal electrode 5 and 6 also can be synchronously along geosutures 71,72 separate from coil holder 7 places, back winding region in magnetic core 2 twine lead 3, after finishing metal electrode 5 and metal electrode 6 sides are upwards bent, and lead 3 gone out line segment 31,32 are welded in corresponding metal electrode 5 and metal electrode 6 (as shown in Figure 5) respectively, back injection spacer 4 in the winding region 22 of magnetic core 2, the lead of major part is sealed in magnetic core 2 inside, promptly becomes a power inductor after to be dried.
Comprehensive the above, the utility model power inductor is the axle core periphery at a magnetic core, adopt coaxial and lead is outwards twined in by winding region in regular turn around mode, make that the line segment that at lead two ends is to extend out by being positioned at the formed coil skin of winding region, so so can make more effective being utilized in space in the winding region in the magnetic core, for example increase number of turns to improve inductance value, or the line footpath of increase lead, to improve the loaded current value, form one slim but be high-power inductor by this.
The above person is preferred embodiment of the present utility model only, is not the scope that is used for limiting the utility model embodiment.Be that all equalizations of being done according to the utility model claim change and modification, be all claim of the present utility model and contain.
Claims (4)
1. the winding structure of a power inductor, include magnetic core and lead, forming a core in the middle of the described magnetic core, axle core periphery is a winding region, it is characterized in that, described lead is to be wound in a core periphery, and by outwards curling in regular turn in the winding region, making the line segment that at lead two ends is to be extended out by the coil skin that lead was entwined by being positioned at winding region.
2. the winding structure of power inductor as claimed in claim 1 is characterized in that, curls the number of turn by the lead of radially analyzing each position in the described winding region and the number of plies is all equal.
3. the winding structure of power inductor as claimed in claim 1, it is characterized in that, described lead is because of going out the difference of line position, and when curling the number of turn by the lead of radially analyzing each position in described winding region, the lead of different parts curls number of turn phase difference and is no more than 2.
4. the winding structure of power inductor as claimed in claim 1, it is characterized in that, described lead is because of going out the difference of line position, and during the number of plies that is curled by the lead of radially analyzing each position in described winding region, the lead of different parts curls number of plies phase difference and is no more than 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011200006391U CN202018874U (en) | 2011-01-04 | 2011-01-04 | Coiling structure of power inductor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011200006391U CN202018874U (en) | 2011-01-04 | 2011-01-04 | Coiling structure of power inductor |
Publications (1)
Publication Number | Publication Date |
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CN202018874U true CN202018874U (en) | 2011-10-26 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2011200006391U Expired - Fee Related CN202018874U (en) | 2011-01-04 | 2011-01-04 | Coiling structure of power inductor |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108766741A (en) * | 2018-07-19 | 2018-11-06 | 深圳振华富电子有限公司 | Large power winding chip inductor |
-
2011
- 2011-01-04 CN CN2011200006391U patent/CN202018874U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108766741A (en) * | 2018-07-19 | 2018-11-06 | 深圳振华富电子有限公司 | Large power winding chip inductor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20160104 |