CN100373506C - Choking-winding and producing method thereof - Google Patents
Choking-winding and producing method thereof Download PDFInfo
- Publication number
- CN100373506C CN100373506C CNB2004100062837A CN200410006283A CN100373506C CN 100373506 C CN100373506 C CN 100373506C CN B2004100062837 A CNB2004100062837 A CN B2004100062837A CN 200410006283 A CN200410006283 A CN 200410006283A CN 100373506 C CN100373506 C CN 100373506C
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- Prior art keywords
- winding
- wire rod
- choking
- helical coil
- manufacture method
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- Expired - Lifetime
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- 238000004804 winding Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000005253 cladding Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- 239000006247 magnetic powder Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
The present invention discloses a choking winding and a manufacturing method thereof. Firstly, two section type wire materials with different heights are used as base materials; after the wire materials are wound into a spiral winding, the spiral winding is welded together with a conducting wire frame; the spiral winding and the conducting wire frame are placed in a mould; the mould is filled with magnetic powder to completely coat the spiral winding without air gap; the coating body of the spiral winding is shaped and coated; secondly, a part which extends out of the coating body is used as an electrode part; the electrode part is bent and glued along the surface of the coating body. Therefore, the choking winding which has the advantages of large cross section area, tight windings, low electrical inductance value loss and small DCR value is formed.
Description
Skill is the field not
The present invention is relevant choking-winding and manufacture method thereof, is meant a kind of larger sectional area that has especially, and more driving fit between the coil reduces inductance value and runs off and the less choking-winding of DCR value.
Background technology
As everyone knows, in recent years, the personage has proposed multinomial scheme both at home and abroad, and attempt proposes to improve to the structure and the manufacture method thereof of coil, makes it meet present high-tech computer product for light, thin, short, little requirement.The U.S. the 6th that ratifies in calendar year 2001,204, in the 744 B1 patent cases, a kind of improved coil is proposed, its profile is shown in Figure 1A, and coil 10 can be attached at a circuit board 12, and it comprises a body 14, extending from body has first electrode 16 and second electrode 18, and respectively with circuit board on pad 20,22 weld mutually.
Please referring to Figure 1B and Fig. 1 C, this coil 10 is to utilize a cross section to form a coil 24 for the upright flat conductor of square, coil becomes helical form, has multi-turn 30, and comprise a medial extremity 26 and an outboard end 28, one includes the lead frame 32 of first lead 16 and second lead 18, promptly is welded into one with the medial extremity 26 and the outboard end 28 of coil 24 respectively with two end 34,38.Then, the coil 24 that is welded with lead 16,18 is placed in the mold, and in mold, injects the magnetic moulding material, after the demoulding, the part of lead frame 32 is cut off, promptly get the coil of this United States Patent (USP) case.
But this U.S. the 6th, 204, the coil of 744 B1 patent cases, because its helical coil is formed by the strip metallic flat wire rod coiling of single height, making wherein a lead frame need pass this helical coil bottom could join with the coil-end of inside, causes the inconvenience on the manufacturing operation, and only is single-layer type, if then need increase the scope of its coiling in the time of will producing higher value of inductance, can't meet light, thin, short, little product demand.
Because the above-mentioned defective that known coil has, the inventor is at the road of those Study of Defects improvement, and research has the present invention to produce eventually when long.
Summary of the invention
Therefore, the present invention promptly aims to provide a kind of manufacture method of choking-winding, manufacture method according to this kind choking-winding of the present invention, has the wire rod of differing heights as base material with the cross section, behind the multi-level planar spiral winding of coiled, insert die for molding with the lead frame welding, the height of helical coil can significantly reduce, and meets light, thin, short, little product demand.
According to the manufacture method of this kind choking-winding of the present invention, employed wire rod can be bipartial or multi-section, meets the requirements down in inductance value, and whole height also can obtain good control, and this is an of the present invention purpose.
According to the manufacture method of this kind choking-winding of the present invention, employed wire rod can be rectangle wire rod or circular wire rod, and selecting for use of its wire rod has preferable elasticity, and this is a further object of the present invention.
According to the manufacture method of this kind choking-winding of the present invention, the mode of coiling out of the ordinary was shaped to and has the double-layer overlapping coil inside and outside its helical coil can be done with wire rod, and this is a further object of the present invention.
Manufacture method according to this kind choking-winding of the present invention, it is the result of inside and outside coiling out of the ordinary or multi-section coiling with wire rod, contact more comprehensive driving fit between wire rod and the wire rod, reach and reduce inductance value and run off and the less choking-winding of DCR value, this is an another purpose of the present invention.
According to the manufacture method of this kind choking-winding of the present invention, can increase its height or area of plane according to the needs situation of looking of product, it is big that it can make the elasticity that changes adjustment with product demand, and applicability is wide, is another purpose of the present invention.
As for detailed construction of the present invention, application principle, effect and effect, then the explanation of doing with reference to following adjoint can be understood completely.
Description of drawings
Figure 1A to Fig. 1 C: be the enforcement illustration of the known U.S. the 6th, 460,244 B1 patents;
Fig. 2: be lead frame stereogram of the present invention;
Fig. 3: be rectangle metal wire rod stereogram of the present invention;
Fig. 4: be helical coil stereogram of the present invention;
Fig. 5: for helical coil of the present invention is connected stereogram with lead frame;
Fig. 6: be molded back of the present invention stereogram;
Fig. 7: be molded back bending electrode part stereogram of the present invention;
Fig. 8: be circular wire rod stereogram of the present invention;
Fig. 9: be circular wire rod coiling stereogram of the present invention;
Figure 10: be circular wire rod coiling back plane figure of the present invention;
Figure 11: for circular wire rod of the present invention is wound into the helical coil stereogram;
Figure 12: the enforcement illustration that is wound into helical coil for circular wire rod of the present invention.
Embodiment
This kind choking-winding of the present invention, make with the following step:
1. conductive metal sheet is struck out two groups and have identical shaped lead frame 4,5 (as shown in Figure 2), make lead frame 4,5 respectively connect strips 401,501 and connect a welding ends 402,502 again with a pedestal 400,500;
2. use have the cross section as 6 (as shown in Figure 3) of bipartial rectangle metallic flat wire rod of differing heights as base material, make transversal material 61 by the interior plane formula spiral surrounding of doing outward, following transversal material 62 is also by the interior plane formula spiral surrounding of doing outward, its two ends also possess extension 63,64, form helical coil 600 (as shown in Figure 4);
3. after the welding ends 402,502 of 63,64 ends, extension of helical coil 600 and lead frame 4,5 being welded to connect, promptly form conductivity helical coil 700 (as shown in Figure 5);
4. conductivity helical coil 700 is inserted in the mould, make pedestal become horizontal extending outside the mould with strip;
5. in mould, fill Magnaglo, enable to coat fully helical coil, and make it not have air gap;
6. carry out moldedly, form to coat the cladding 8 of helical coil, cladding 8 tops correspond on the direction that strip 401,501 stretches out and form the tank 81,82 (as shown in Figure 6) that has than low degree;
7. cut off strip and base material joint, remove base material 400,500, keep strip 401,501;
With the strip 401,501 that extends cladding as electrode part, it along cladding 8 surface bendings, and is made it to embed the tank 81,82 (as shown in Figure 7) on cladding top;
9. finish choking-winding 800 thus.
The choking-winding of obtaining by above-mentioned manufacturing step, because helical coil 600 is to have the bipartial rectangle wire rod 6 of differing heights, doing the coiling of plane formula spiral respectively with the levels wire rod is formed, contact driving fit more between its wire rod and the wire rod, whole height also can significantly improve, not only have larger sectional area, and can reduce the inductance value loss, and obtain the less characteristic of DCR value.
Moreover, above-mentioned helical coil, its base material also can be made by flat wire rod or circular wire rod, promptly utilize circular wire rod 9 to twine (as shown in Figure 8) to the left and right respectively, make up coiled 900 (as shown in Figure 9) of wire rod one end, wire rod is held down coiled in addition, make it form coil inside and outside double-layer overlapping shape, be that wire rod terminal A, B are all in peripheral (as shown in figure 10), and coil two ends one-tenth to outer winding mode, constitutes the helical coil 901 (as shown in figure 11) that Internal and external cycle extends toward both sides, the left and right sides respectively by outer at last.Contact driving fit more between its wire rod and the wire rod, whole height also can significantly improve, and not only has larger sectional area, and can reduce inductance value and run off, and obtains the less characteristic of DCR value.
And, as shown in figure 12, should constitute the helical coil 901 that Internal and external cycle extends toward both sides, the left and right sides respectively with circular wire rod coiling, can form flat body 902,903 in its line segment end, so, after molded, can be general as shown in Figure 6, directly with flat body 902,903 as electrode part, it is made it to embed the tank on cladding top along the bending of cladding surface.Perhaps, it also can come molded by both sides welding lead frame.
In sum, this kind choking-winding of the present invention and manufacture method thereof, the choking-winding volume that manufactures can greatly reduce, and meets light, thin, short, the little requirement of present high tech electron product, and its electrode part can be along cladding surface bending forming, fabrication schedule is greatly simplified, and need not to utilize the high price machine to make, manufacturing cost promptly greatly reduces, for having the invention of industrial utilization, the key element that meets patent statute is earnestly asked and is grant standard.
Need Chen Ming, the above is the preferable specific embodiment of the present invention, if the change of doing according to conception of the present invention, and the function of its generation, when not exceeding the spirit that specification and icon contain yet, all should be in the present invention's scope, Chen Ming hereby.
Claims (6)
1. the manufacture method of a choking-winding comprises:
Helical coil forming step: use metal wire rod to form helical coil through coiling;
Molded step: helical coil is inserted in the mould, the wire rod end is extended outside the mould, molded;
Preparation electrode part step: with the wire rod end that extends the cladding outside that coats this helical coil after the moulding as electrode part; It is characterized in that:
Described helical coil, use have the cross section for highly different bipartial wire rods as base material, make the transversal material by the interior plane formula spiral surrounding of doing outward, following transversal material is by the interior plane formula spiral surrounding of doing outward, its two ends possess the extension.
2. the manufacture method of choking-winding as claimed in claim 1 is characterized in that: described helical coil is that rectangular metallic flat wire rod is as base material to use the cross section.
3. the manufacture method of choking-winding as claimed in claim 1 is characterized in that: described cross section is that rectangle metallic flat wire rod has two sections up and down at least.
4. the manufacture method of choking-winding as claimed in claim 1, it is characterized in that: described helical coil end can connect lead frame respectively before molded.
5. the manufacture method of choking-winding as claimed in claim 1, it is characterized in that: described electrode part is the flat end of above-mentioned helical coil, after molded step along the bending of cladding surface.
6. the manufacture method of choking-winding as claimed in claim 1, it is characterized in that: the described helical coil also circular wire rod of available height unanimity twines respectively to the left and right, make up coiled of wire rod one end, wire rod is held down coiled in addition, makes to form coil inside and outside double-layer overlapping shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100062837A CN100373506C (en) | 2004-03-23 | 2004-03-23 | Choking-winding and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100062837A CN100373506C (en) | 2004-03-23 | 2004-03-23 | Choking-winding and producing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1674172A CN1674172A (en) | 2005-09-28 |
| CN100373506C true CN100373506C (en) | 2008-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100062837A Expired - Lifetime CN100373506C (en) | 2004-03-23 | 2004-03-23 | Choking-winding and producing method thereof |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034593B (en) * | 2009-09-25 | 2012-09-26 | 川部股份有限公司 | Inductor and manufacturing method thereof |
| CN104992831A (en) * | 2015-07-28 | 2015-10-21 | 湖北蕊源电子股份有限公司 | A novel inductor and a method for manufacturing the same |
| JP6577918B2 (en) * | 2016-08-02 | 2019-09-18 | 太陽誘電株式会社 | Coil parts |
| CN106653307B (en) * | 2016-12-19 | 2018-06-08 | 广东德磁科技有限公司 | It is integrated double-deck vertical around inductor and its manufacturing method |
| CN107871594B (en) * | 2017-05-31 | 2019-07-02 | 洪豪立 | " Taiji " type graphene smoothing choke and preparation method thereof |
| JP2021064669A (en) * | 2019-10-11 | 2021-04-22 | 株式会社村田製作所 | Coil and inductor including coil |
| CN113571286B (en) * | 2021-07-27 | 2023-04-18 | 浙江田中精机股份有限公司 | NFC coil blank and winding device thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001015343A (en) * | 1999-07-02 | 2001-01-19 | Totoku Electric Co Ltd | Choke coil |
| JP2002313642A (en) * | 2001-04-12 | 2002-10-25 | Tokyo Coil Engineering Kk | Choke coil |
| CN1435854A (en) * | 2002-01-31 | 2003-08-13 | Tdk株式会社 | Coil packaged magnetic dust core capable of obtaining excellent inductive property and mfg. method thereof |
-
2004
- 2004-03-23 CN CNB2004100062837A patent/CN100373506C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001015343A (en) * | 1999-07-02 | 2001-01-19 | Totoku Electric Co Ltd | Choke coil |
| JP2002313642A (en) * | 2001-04-12 | 2002-10-25 | Tokyo Coil Engineering Kk | Choke coil |
| CN1435854A (en) * | 2002-01-31 | 2003-08-13 | Tdk株式会社 | Coil packaged magnetic dust core capable of obtaining excellent inductive property and mfg. method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1674172A (en) | 2005-09-28 |
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