CN105448468B - Thin inductance structure and manufacture method - Google Patents
Thin inductance structure and manufacture method Download PDFInfo
- Publication number
- CN105448468B CN105448468B CN201510912443.2A CN201510912443A CN105448468B CN 105448468 B CN105448468 B CN 105448468B CN 201510912443 A CN201510912443 A CN 201510912443A CN 105448468 B CN105448468 B CN 105448468B
- Authority
- CN
- China
- Prior art keywords
- magnetic conduction
- coil
- conduction sheet
- electrode tips
- pins
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000006071 cream Substances 0.000 claims abstract description 13
- 230000008018 melting Effects 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 230000004907 flux Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/043—Fixed inductances of the signal type with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/10—Connecting leads to windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The present invention discloses a kind of thin inductance structure and manufacture method, and thin inductance structure includes a coil, two electrode tips, one first magnetic conduction sheet, one second magnetic conduction sheet and a body；The coil has two pins；Two electrode tip is electrically connected in two pins；First magnetic conduction sheet is arranged between two electrode tips and positioned at the lower section of coil, and second magnetic conduction sheet is arranged on the top that may correspond to first magnetic conduction sheet, and the body is coated on coil and sticks together the first magnetic conduction sheet, the second magnetic conduction sheet and two electrodes.By the way that directly the two pins of coil are temporarily sticked together at two electrode tips of default customized lead frame using tin cream, then enter in reflow oven and carry out tin cream melting and be welded and fixed two electrode tips on the two pins and lead frame on coil, thus make that between two electrode tips on two pins and lead frame on coil the action of welding one by one need not be carried out, reach the purpose of simplified processing procedure, operating efficiency is effectively improved, so as to improve the benefit of yield.
Description
Technical field
The present invention relates to inductance art, a kind of thin inductance structure and manufacture method are referred in particular to.
Background technology
Known thin inductance structure, although type body has a many kinds, but on the coil and lead frame in its structure it
First wire, the connection of the second conductor wire end are fixed, and are all to carry out to complete with welding manner, such as shown in figure below：The U.S.
No. 6204744 patents of invention, refer to its 1B figures with shown in the 1st C figures, in figure it can be seen that on lead frame 32 the
Two medial extremity 26 of end 34,38 respectively with coil 24 of the lead frame 32 of one wire 16 and the second wire 18
And outboard end 28 is to adopt welding manner to be integrally formed to combine fixation.Checked and approved in addition such as TaiWan, China and disclose No. 201234395
Patent third and fourth, shown in five figures, the Liang Zhe foots 11 of conductive coil 10 are to adopt with the pad 22 in the framework 21
It is integrally formed with welding manner with reference to fixation.For another example TaiWan, China checks and approves the manufacture of No. 508598 patent thin inductance device
Shown in Fig. 2 in method, two coil terminals 21,22 and two, which are exerted oneself between terminal 41,42, to be tied using welding manner
Fixation is closed to be integrally formed.
, it is necessary to carry out the action of welding one by one during above-mentioned fixed operation so that processing procedure is cumbersome, inefficiency, so as to also make
The benefit for obtaining production capacity is not high.
The content of the invention
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide a kind of thin inductance knot to the present invention
Structure and manufacture method, it can effectively solve the problem of existing thin inductance structure processing procedure is cumbersome, efficiency is low.
To achieve the above object, the present invention is using following technical scheme：
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide a kind of thin inductance knot to the present invention
Structure and manufacture method, it can effectively solve the problem of existing thin inductance structure processing procedure is cumbersome, efficiency is low.
To achieve the above object, the present invention is using following technical scheme：
A kind of thin inductance structure, include a coil, two electrode tips, one first magnetic conduction sheet, one second magnetic conduction sheet and
One body；The coil has two pins；Two electrode tip is arranged at intervals, and two electrode tips are electrically connected in foregoing two pins；
First magnetic conduction sheet is arranged between two electrode tips and positioned at the lower section of coil, second magnetic conduction sheet be arranged on may correspond to this
The top of one magnetic conduction sheet, the body is iron powder and plastics mixture, and the body is coated on coil and leads the first magnetic conduction sheet, second
Magnetic sheet and two electrode tips stick together.
As a kind of preferred scheme, the coil is that the insulating barrier by a copper cash with being coated on outside the copper cash is constituted.
A kind of manufacture method of thin inductance structure, includes following steps：
（1）Two electrode tips that the two pins for completing coiled wire-wound coil are placed in after depainting bag on lead frame, the two of coil draws
Tin cream is coated in advance between pin and two electrode tips to stick together；
（2）Then enter in reflow oven and carry out tin cream melting and weld two electrode tips on the two pins and lead frame on coil
Connect and fix；
（3）Lead frame is put into mould together with coil, one first magnetic conduction sheet is provided between two electrode tips, first leads
Magnetic sheet is located at the lower section of coil；
（4）Pour into iron powder and plastics mixture；
（5）In the top corresponding to first magnetic conduction sheet, one second magnetic conduction sheet is provided with；By precompressed, cut electrode
End directly cut with lead frame separate, extrusion forming；
（6）Baking, solidifies mixture, forms body after mixture solidification, the body is coated on coil and led first
Magnetic sheet, the second magnetic conduction sheet and two electrode tips stick together.
The body is coated on coil and sticks together the first magnetic conduction sheet, the second magnetic conduction sheet and two electrode tips.
The present invention has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technical proposal
Understand：
It is fixed on by directly being sticked together the pin of coil using tin cream at two electrode tips of default customized lead frame,
Then enter in reflow oven and carry out tin cream melting and be welded and fixed two electrode tips on the two pins and lead frame on coil, because
And make that between two electrode tips on the two pins and lead frame on coil the action of welding one by one need not be carried out, so in fixed operation
When upper, the pin solder joint of hundreds of coils was once may be melted, the purpose of simplified processing procedure is reached, and effectively improved work effect
Rate, so as to improve the benefit of yield；The magnetic flux size of the present invention can be using changing the first magnetic conduction sheet and the second magnetic conduction sheet
Size or material, and the number of coiling control required magnetic flux size to reach；In addition, electrode tip can be in shaping with cutting out
Directly formed after cutting, it is not necessary to any bending process program again.
More clearly to illustrate the architectural feature and effect of the present invention, come below in conjunction with the accompanying drawings with specific embodiment to this hair
It is bright to be described in detail.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the preferred embodiments of the invention；
Fig. 2 is the schematic perspective view of another angle of the preferred embodiments of the invention；
Fig. 3 is the first state schematic perspective view of manufacturing process in the preferred embodiments of the invention；
Fig. 4 is Fig. 3 close-up schematic view；
Fig. 5 is the first state schematic cross-section of manufacturing process in the preferred embodiments of the invention；
Fig. 6 is the second state schematic cross-section of manufacturing process in the preferred embodiments of the invention；
Fig. 7 is the third state schematic cross-section of manufacturing process in the preferred embodiments of the invention；
Fig. 8 is the schematic cross-section after the completion of manufacturing in the preferred embodiments of the invention.
Accompanying drawing identifier declaration：
10th, coil 11, pin
20th, electrode tip 200, lead frame
30th, the first magnetic conduction sheet 40, the second magnetic conduction sheet
50th, body 60, tin cream.
Embodiment
It refer to shown in Fig. 1 to Fig. 8, that show the concrete structure of the preferred embodiments of the invention, include a line
Enclose 10, two electrode tips 20, one first magnetic conduction sheet 30, one second magnetic conduction sheet 40 and a body 50.
The coil 10 has two pins 11, specifically, and the coil 10 is by a copper cash and is coated on outside the copper cash
One insulating barrier is constituted.
Two electrode tip 20 is arranged at intervals, and two electrode tips 20 are electrically connected in foregoing two pins 11.
First magnetic conduction sheet 30 is arranged between two electrode tips 20 and positioned at the lower section of coil 10, and second magnetic conduction sheet 40 is set
Put and may correspond to the top of first magnetic conduction sheet 30.
The body 50 is iron powder and plastics mixture, and the body 50 is coated on coil 10 and by the first magnetic conduction sheet 30, second
The electrode tip 20 of magnetic conduction sheet 40 and two sticks together.In the present embodiment, the bottom surface of two electrode tip 20 is to be exposed to the bottom surface of body 50,
The bottom surface of body 50 is exposed in the bottom surface of first magnetic conduction sheet 30, and the surface of body 50 is exposed on the surface of second magnetic conduction sheet 40.
Invention additionally discloses a kind of manufacture method of thin inductance structure, include following steps：
（1）As shown in Figures 3 to 5, the two pins for completing coiled wire-wound coil 10 are placed in after depainting bag on lead frame 200
Tin cream 60 is coated in advance between two electrode tips 20, the electrode tip 20 of two pins 11 and two of coil 10 to stick together.
（2）Then enter and tin cream melting is carried out in reflow oven, weld two electrode tips on the two pins and lead frame on coil
Connect and fix.
（3）Lead frame 200 is put into mould together with coil 10, as shown in fig. 6, being provided with one between two electrode tips 20
First magnetic conduction sheet 30, the first magnetic conduction sheet 30 is located at the lower section of coil 10；
（4）As shown in fig. 7, pouring into iron powder and plastics mixture；
（5）The top of first magnetic conduction sheet 30 is being may correspond to, one second magnetic conduction sheet 40 is being provided with, as shown in Figure 8；By
Precompressed, cut electrode tip 20 is directly cut with lead frame 200 separate, extrusion forming；
（6）Baking, solidifies mixture, and body 50 is formed after mixture solidification, and the body 50 is coated on coil 10 and will
First magnetic conduction sheet 30, the second magnetic conduction sheet 40 and two electrode tips 20 stick together.
The design focal point of the present invention is：Customized led default by directly being sticked together the pin of coil using tin cream
At two electrode tips of coil holder, then enter in reflow oven and carry out tin cream melting and make two electricity on the two pins and lead frame on coil
Extremely it is welded and fixed, thus makes to be welded dynamic one by one between two electrode tips on the two pins and lead frame on coil
Make, so when in fixed operation, once may be melted the pin solder joint of hundreds of coils, reaching the mesh of simplified processing procedure
, operating efficiency is effectively improved, so as to improve the benefit of yield；The magnetic flux size of the present invention can utilize the first magnetic conduction of change
The size or material of piece and the second magnetic conduction sheet, and the number of coiling control required magnetic flux size to reach；In addition, electric
Extremely can be in shaping with directly being formed after cutting, it is not necessary to any bending process program again.
The above described is only a preferred embodiment of the present invention, be not intended to limit the scope of the present invention,
Therefore any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example, still
Belong in the range of technical solution of the present invention.
Claims (3)
1. a kind of thin inductance structure, it is characterised in that：Include a coil, two electrode tips, one first magnetic conduction sheet, one second lead
Magnetic sheet and a body；The coil has two pins；Two electrode tip is arranged at intervals, and two electrode tips are electrically connected in foregoing
Two pins；First magnetic conduction sheet is arranged between two electrode tips and positioned at the lower section of coil, second magnetic conduction sheet and the first magnetic conduction
Piece is separated each other, and second magnetic conduction sheet is arranged on the top that may correspond to first magnetic conduction sheet, and the body is that iron powder is mixed with plastics
Zoarium, the body is coated on coil and sticks together the first magnetic conduction sheet, the second magnetic conduction sheet and two electrode tips.
2. thin inductance structure according to claim 1, it is characterised in that：The coil is by a copper cash and is coated on this
An insulating barrier outside copper cash is constituted.
3. a kind of manufacture method of thin inductance structure, it is characterised in that：Include following steps：
（1）To complete two electrode tips that are placed in after depainting bag on lead frame of two pins of coiled wire-wound coil, the two pins of coil with
Tin cream is coated in advance between two electrode tips to stick together；
（2）Then enter in reflow oven and carry out tin cream melting and two electrode tips on the two pins and lead frame on coil is welded solid
Live calmly；
（3）Lead frame is put into mould together with coil, one first magnetic conduction sheet, the first magnetic conduction sheet are provided between two electrode tips
Positioned at the lower section of coil；
（4）Pour into iron powder and plastics mixture；
（5）In the top corresponding to first magnetic conduction sheet, one second magnetic conduction sheet is provided with, second magnetic conduction sheet and the first magnetic conduction sheet
Separate each other；By precompressed, cut electrode tip is directly cut with lead frame separate, extrusion forming；
（6）Baking, solidify mixture, mixture solidification after form body, the body be coated on coil and by the first magnetic conduction sheet,
Second magnetic conduction sheet and two electrode tips stick together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912443.2A CN105448468B (en) | 2015-12-11 | 2015-12-11 | Thin inductance structure and manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912443.2A CN105448468B (en) | 2015-12-11 | 2015-12-11 | Thin inductance structure and manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105448468A CN105448468A (en) | 2016-03-30 |
| CN105448468B true CN105448468B (en) | 2017-09-01 |
Family
ID=55558554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510912443.2A Expired - Fee Related CN105448468B (en) | 2015-12-11 | 2015-12-11 | Thin inductance structure and manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105448468B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683853B (en) * | 2017-03-17 | 2020-10-02 | 艾德克斯电子（南京）有限公司 | Transformer framework, transformer connecting circuit and switching power supply |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2180992C (en) * | 1995-07-18 | 1999-05-18 | Timothy M. Shafer | High current, low profile inductor and method for making same |
| TW508598B (en) * | 2001-06-07 | 2002-11-01 | De-Lu Tzeng | Manufacturing method for thin inductor |
| TWI405225B (en) * | 2008-02-22 | 2013-08-11 | Cyntec Co Ltd | Choke coil |
| TW201234395A (en) * | 2011-02-11 | 2012-08-16 | Superworld Electronics Co Ltd | Injection molding shielding type inductor manufacturing method |
| CN103887046A (en) * | 2014-03-13 | 2014-06-25 | 东莞建冠塑胶电子有限公司 | Thin induction coil structure |
| CN104347240B (en) * | 2014-10-09 | 2016-12-07 | 东莞建冠塑胶电子有限公司 | Thin induction coil |
-
2015
- 2015-12-11 CN CN201510912443.2A patent/CN105448468B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105448468A (en) | 2016-03-30 |
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| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 |
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| CF01 | Termination of patent right due to non-payment of annual fee |