CN1145180C - Manufacture of electrode pad of iron core for small inductor - Google Patents
Manufacture of electrode pad of iron core for small inductor Download PDFInfo
- Publication number
- CN1145180C CN1145180C CNB001301683A CN00130168A CN1145180C CN 1145180 C CN1145180 C CN 1145180C CN B001301683 A CNB001301683 A CN B001301683A CN 00130168 A CN00130168 A CN 00130168A CN 1145180 C CN1145180 C CN 1145180C
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- iron core
- electrode
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- sides
- electrode pad
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Abstract
The present invention relates to a method for manufacturing iron core electrode faces of an inductor, which is characterized in that the central position of the surface of an iron core welding plate is firstly covered by covering strips; silver adhesive layers are sprayed to the surfaces of the preset electrode parts which are not covered at both sides, and are combined and attached to the surfaces of the preset electrode parts at both sides after baking and high-temperature sticking; then, a plurality of metal coatings are plated on the surfaces of the silver adhesive layers for many times so that an iron core finished product with electrode faces forming at the surfaces of the preset electrode parts at both sides is manufactured. The present invention has the electrode faces with great and integral area and uniform thickness, reduces manufacture cost, improves the electric conduction effect and welding strength, and promotes competitiveness and durable use stability.
Description
Technical field
The present invention relates to a kind of manufacture method of electrode pad of iron core of midget inductor.
Background technology
Existing midget inductor as shown in Figures 1 and 2, the manufacture method of its iron core 1 ' is with the croci punch forming, and is formed with side shield 13 ' and connecting plate 12 ' after car system axle 11 ', and is formed with two concave arc grooves in connecting plate 12 ' surface; After sintering,, with transfer-print technology, slurry is built-up in, again to be formed with electrode surface 121 ' in concave arc groove and both side surface thereof.Because electrode surface 121 ' is to form in the bat printing mode of attaching, the degree of difficulty that not only has the contraposition bat printing, and the thickness of electrode surface 121 ' can thicker (material cost increase), not only more inhomogeneous but also more imperfect, therefore with the end of a thread 21 of winding around 2 when the welding, be easy to generate and come off or exceed connecting plate 12 ' plane, cause coil 2 welding and connecting plate 12 ' and 3 affixed puzzlements of circuit board.Be and the manufacture of this kind electrode surface 121 ' on industry, to be formed with cost height, quality problem than instability and welding effect difference.
Summary of the invention
Purpose of the present invention, be to provide a kind of manufacture method, enable to reduce technical need and reduce the electrode surface materials, manufacturing cost is reduced with electrode pad of iron core of big and complete, the uniform midget inductor of thickness, quality is easier to control, reaches low-cost and high-quality enhancement effect.
A further object of the present invention is to provide a kind of manufacture method of electrode pad of iron core of midget inductor, the bilateral electrode surface that this method is made has big and complete and the uniform contact-making surface of thickness, can be for coil the end of a thread is easy to and its solid welding, connect conducting effect and bond strength to improve, and can contact solid welding with the circuit board large tracts of land, make it be difficult for being promoted to break away from, have lasting steadiness by external force.
Above-mentioned purpose of the present invention is realized by following technical scheme.
A kind of manufacture method of electrode pad of iron core of midget inductor, it is characterized in that: be earlier iron core welded plate surface to be hidden central part to hide bar, again the surface spray of the unsheltered predetermined electrode of bilateral portion had the elargol layer, drying and high temperature burn attached, have made the combination of elargol layer attached to surface, bilateral predetermined electrode position; Then, in there being the elargol laminar surface to plate multiple layer metal coating again, and then make the iron core manufactured goods be formed with big and the complete and uniform electrode surface of thickness of area on surface, bilateral predetermined electrode position.
The invention has the advantages that:
Can reduce manufacturing cost, improve electrically conducting effect and weld strength, promote quality competitiveness and the lasting stability of using.
Description of drawings
Conjunction with figs. and embodiment are described as follows in detail with regard to manufacture method of the present invention and manufactured goods:
Figure 1 shows that the stereogram of existing inductor manufactured goods.
Figure 2 shows that existing midget inductor contacts the side schematic view of situation with circuit board.
Figure 3 shows that manufacture method flow chart of the present invention.
Figure 4 shows that the stereogram of the iron core of sintering that the embodiment of the invention adopts.
Figure 5 shows that iron core manufactured goods stereogram of the present invention.
Figure 6 shows that iron core of the present invention is wound with coil, form the stereogram of midget inductor.
Figure 7 shows that midget inductor of the present invention contacts the generalized section of situation with circuit board.
Embodiment
See also Fig. 3 and Fig. 4, the iron core 1 of the embodiment of the invention is not during sintering, be with the croci punch forming, and car is shaped on axle 11, and distinguishes and form welded plate 12 and side shield 13, these integrally formed one central part 121 in welded plate 12 surfaces and bilateral predetermined electrode positions 122, has engagement groove 1221 in each predetermined electrode position 122 central authorities, have wire casing 1222 on the lateral border, make central part 121 and predetermined electrode position 122, promptly carry out high temperature sintering when the welded plate 12 of iron core 1.But the embodiment of above-mentioned iron core 1 is only for reference, and electrode surface manufacture method of the present invention does not limit the iron core that is used in above-mentioned form;
See also Fig. 3 and shown in Figure 5, when iron core 1 hides to hide bar, 122 surface sprays have the elargol layer in the unsheltered predetermined electrode of bilateral position again, after drying (the about 120 ℃) process, carry out high temperature again and burn attached (about 550-700 ℃), made the combination under the condition of high temperature of elargol layer be attached to 122 surfaces, bilateral predetermined electrode position, afterwards again in there being the elargol laminar surface to plate multiple layer metal coating again, for example first plated with copper coating, the plated with nickel coating again in the copper coating surface, plate the tin lead-coat again in the nickel coating surface, and then reach iron core 1 finished product that makes manufactured goods be formed with big and the complete and uniform electrode surface 123 of thickness of area on 122 surfaces, bilateral predetermined electrode position.
See also shown in Fig. 5-7, because the electrode surface 123 of iron core 1 has the even and complete electrode surface of thickness 123, when so coil 2 is wrapped on iron core 1 axle 11, the end of a thread 21 of this coil 2 can be behind wire casing 1222 location at electrode area 122 edges of projection, the end of a thread 21 of coil 2 is easy on the binding site 1231 of solid welding electrode surface 123, to improve effect and the bond strength that connects conducting.
Moreover, utilize the attached method of spray to make the electrode surface 123 on 122 surfaces, bilateral predetermined electrode position have contact-making surface 1232 big and complete and that thickness is thicker, can be the large tracts of land solid welding with circuit board 3, making it not be subject to external force promotes to break away from, reach and have lasting steadiness, electrical equipment conducting effect and bond strength can be improved, the quality competitiveness can be promoted again.
In sum, the manufacture method of the electrode pad of iron core of midget inductor of the present invention, really can solve existing bat printing contraposition difficulty and in uneven thickness, the incomplete defective of bat printing, and the problem of existing solid welding difficulty of improvement and the protruding dew of the end of a thread fixing point, and then can reduce cost on manufacturing technology and the material, the quality that is manufactured goods is better and more stable, and can improve the binding ability and stability that is electrically connected.
Claims (1)
1, a kind of manufacture method of electrode pad of iron core of midget inductor, it is characterized in that: be earlier iron core welded plate surface to be hidden central part to hide bar, again the surface spray of the unsheltered predetermined electrode of bilateral portion had the elargol layer, drying and high temperature burn attached, have made the combination of elargol layer attached to surface, bilateral predetermined electrode position; Then, in there being the elargol laminar surface to plate multiple layer metal coating again, and then make the iron core manufactured goods be formed with big and the complete and uniform electrode surface of thickness of area on surface, bilateral predetermined electrode position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001301683A CN1145180C (en) | 2000-10-18 | 2000-10-18 | Manufacture of electrode pad of iron core for small inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001301683A CN1145180C (en) | 2000-10-18 | 2000-10-18 | Manufacture of electrode pad of iron core for small inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1349233A CN1349233A (en) | 2002-05-15 |
| CN1145180C true CN1145180C (en) | 2004-04-07 |
Family
ID=4594008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001301683A Expired - Fee Related CN1145180C (en) | 2000-10-18 | 2000-10-18 | Manufacture of electrode pad of iron core for small inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1145180C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538157B (en) * | 2014-12-19 | 2017-02-22 | 广东风华高新科技股份有限公司 | Terminal electrode of chip inductor, manufacturing method thereof and chip inductor |
-
2000
- 2000-10-18 CN CNB001301683A patent/CN1145180C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1349233A (en) | 2002-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040407 Termination date: 20171018 |