CN107610879B - Columnar inductor and method of making the same - Google Patents
Columnar inductor and method of making the same Download PDFInfo
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- CN107610879B CN107610879B CN201710897898.0A CN201710897898A CN107610879B CN 107610879 B CN107610879 B CN 107610879B CN 201710897898 A CN201710897898 A CN 201710897898A CN 107610879 B CN107610879 B CN 107610879B
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Abstract
本发明公开了一种柱形电感及其制造方法，该柱形电感包括：绕制成中空圆柱形结构的漆包线，绕制完毕之后漆包线具有有两个引出端；故而所述柱形电感可不依赖于磁芯的支撑，能够减少磁性材料使用量。另外，所述漆包线的中空圆柱形结构内部填充有软磁性的特质材料；固化树脂，设置在所述漆包线表面且用于固定所述漆包线。由于漆包线中空内部填充的软磁性的特质材料具有磁通小、低损耗的特点，进而能够能够提高柱形电感的感值，可用在带宽200KHz～40GHz，实现uF级电感应用，达到扩展电感应用范围的技术效果。
The invention discloses a cylindrical inductor and a manufacturing method thereof. The cylindrical inductor comprises: an enameled wire wound into a hollow cylindrical structure, and the enameled wire has two lead-out ends after the winding is completed; Due to the support of the magnetic core, the amount of magnetic material used can be reduced. In addition, the inside of the hollow cylindrical structure of the enameled wire is filled with a soft magnetic special material; the cured resin is arranged on the surface of the enameled wire and used to fix the enameled wire. The soft magnetic special material filled in the hollow interior of the enameled wire has the characteristics of small magnetic flux and low loss, which can improve the inductance value of the cylindrical inductance. technical effect.
Description
Technical Field
The application relates to the field of electricity, in particular to a cylindrical inductor and a manufacturing method thereof.
Background
The wideband inductor may be used in radio frequency, microwave, millimeter wave integrated circuits, optical and electrical communication circuits, wideband amplifiers, wideband bias-tee, and wideband filters, among others.
The prior art inductor generally comprises two parts: the magnetic core and the winding wound on the magnetic core.
The existing magnetic core is generally made of magnetic materials, and then copper enameled wires are wound on the surface of the magnetic core. Or the conductor coil is directly embedded in the magnetic body.
The magnetic core and the magnetic body are both magnetic materials, so that a strong magnetic field or a limited non-magnetic material cannot be used in use occasions, and the application range is narrow.
Disclosure of Invention
The invention provides a cylindrical inductor and a manufacturing method thereof, which aim to solve the technical problem of narrow application range.
In order to solve the above technical problem, the present invention provides a cylindrical inductor, comprising:
the enameled wire is wound into a hollow cylindrical structure and is provided with two leading-out ends after the winding is finished; soft magnetic special materials are filled in the hollow cylindrical structure of the enameled wire;
and the curing resin is arranged on the surface of the enameled wire and is used for fixing the enameled wire.
Preferably, the enameled wire is a gold-plated enameled wire or a pure gold enameled wire.
Preferably, the soft magnetic specialty materials include, but are not limited to: ceramics, nickel zinc ferrite, manganese zinc ferrite, iron powder zinc.
Preferably, the interior of the hollow cylindrical structure of the enameled wire is filled with a mixed material formed by mixing a soft magnetic special material and epoxy resin.
The invention discloses a method for manufacturing a cylindrical inductor, which comprises the following steps:
manufacturing a cylindrical body matrix through machining;
winding an enameled wire along the cylindrical matrix to form a cylindrical structure;
fixing the enameled wire by using cured resin;
removing the substrate to enable the enameled wire to be wound into a hollow cylindrical structure, wherein two leading-out ends are arranged after the winding is finished;
and filling the special soft magnetic material into the hollow cylindrical structure of the enameled wire.
Preferably, when the surface of the enameled wire has the cured resin, the enameled wire is fixed by using the cured resin, specifically: and heating the cured resin or irradiating the cured resin by using ultraviolet rays, so that the cured resin is deformed and adhered to the surface of the enameled wire, and the enameled wire is cured after being cooled.
Preferably, the fixing the enameled wire by using the cured resin specifically includes:
spraying the cured resin on the enameled wire;
and heating the cured resin or irradiating the cured resin by using ultraviolet rays, so that the cured resin is deformed and adhered to the surface of the enameled wire, and the enameled wire is cured after being cooled.
Preferably, the filling of the soft magnetic special material into the hollow cylindrical structure of the enameled wire specifically includes:
and filling the soft magnetic special material into the hollow cylindrical structure of the enameled wire by adopting a drip irrigation filling technology.
Preferably, the filling of the soft magnetic special material into the hollow cylindrical structure of the enameled wire specifically includes:
mixing the soft magnetic idiosyncratic material and epoxy resin in proportion to form a mixture;
and filling the mixture into the hollow cylindrical structure of the enameled wire by adopting a drip irrigation filling technology.
Preferably, the soft magnetic specialty materials include, but are not limited to: ceramics, nickel zinc ferrite, manganese zinc ferrite, iron powder zinc.
Through one or more technical schemes of the invention, the invention has the following beneficial effects or advantages:
the invention discloses a cylindrical inductor and a manufacturing method thereof, wherein the cylindrical inductor comprises the following components: winding the enameled wire into a hollow cylindrical structure, wherein the enameled wire is provided with two leading-out ends after the winding is finished; therefore, the cylindrical inductor does not depend on the support of the magnetic core, and the using amount of magnetic materials can be reduced. In addition, the interior of the hollow cylindrical structure of the enameled wire is filled with soft magnetic special materials; and the curing resin is arranged on the surface of the enameled wire and is used for fixing the enameled wire. The soft magnetic special material filled in the hollow interior of the enameled wire has the characteristics of small magnetic flux and low loss, so that the inductance value of the cylindrical inductor can be improved, the soft magnetic special material can be used in a bandwidth of 200 KHz-40 GHz, the application of a uF-level inductor is realized, and the technical effect of expanding the application range of the inductor is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a cylindrical inductor according to an embodiment of the present invention.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
The embodiment of the invention provides a cylindrical inductor and a manufacturing method thereof, which are used for at least solving the technical problem of narrow application range of the inductor in the prior art.
The inductor in the prior art belongs to magnetic wave inductor, and the magnetic core in the magnetic wave inductor uses magnetic material, so the loss of the inductor is large due to the characteristic of high magnetism of the magnetic material, and the frequency band is narrow when the inductor can only be applied to occasions with small inductance value in order to reduce the loss. Therefore, the application range of the inductor is narrow.
In order to solve the above technical problems, the technical solution idea provided by the present invention is as follows:
in the technical solution of the embodiment of the present invention, the cylindrical inductor includes: winding the enameled wire into a hollow cylindrical structure, wherein the enameled wire is provided with two leading-out ends after the winding is finished; therefore, the cylindrical inductor does not depend on the support of the magnetic core, and the using amount of magnetic materials can be reduced. In addition, the interior of the hollow cylindrical structure of the enameled wire is filled with soft magnetic special materials; and the curing resin is arranged on the surface of the enameled wire and is used for fixing the enameled wire. The soft magnetic special material filled in the hollow interior of the enameled wire has the characteristics of small magnetic flux and low loss, so that the inductance value of the cylindrical inductor can be improved, the soft magnetic special material can be used in a bandwidth of 200 KHz-40 GHz, the application of a uF-level inductor is realized, and the technical effect of expanding the application range of the inductor is achieved.
The technical solutions of the present invention are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present invention are described in detail in the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Referring to fig. 1, the structure of the cylindrical inductor of the present invention will be described in detail.
The enameled wire in the cylindrical inductor is a gold-plated enameled wire or a pure gold enameled wire.
And the soft magnetic idiosyncrasy material is filled in the hollow cylindrical structure of the enameled wire.
In a specific implementation process, in order to realize a hollow cylindrical structure of the enameled wire, a cylindrical base body is firstly manufactured, and then the enameled wire is wound on the cylindrical base body one by one. The enameled wire can be a gold-plated enameled wire and also can be a pure gold enameled wire. And after the winding is finished, removing the matrix from the enameled wire. The wound enameled wire in the embodiment of the invention further comprises two leading-out ends so as to facilitate the connection of an inductor into a circuit. In the specific implementation process, the two leading-out terminals can be connected to the circuit by bonding, crimping or welding, and a person skilled in the art can select the two leading-out terminals according to the actual situation, and the invention is not limited in particular.
Secondly, the interior of the hollow cylindrical structure of the enameled wire is filled with a soft magnetic idiosyncratic material.
Soft magnetic specialty materials include, but are not limited to: ceramics, nickel zinc ferrite, manganese zinc ferrite, iron powder zinc. Furthermore, the hollow cylindrical structure of the enamel wire is filled with one or more of the above-listed soft magnetic specialty materials.
Further, the present invention may also fill a mixture of the soft magnetic idiosyncratic material and the epoxy resin into the hollow cylindrical structure of the enamel wire. Therefore, the hollow cylindrical structure of the enameled wire can be filled with a mixed material formed by mixing the soft magnetic special material and the epoxy resin.
Further, in the embodiment of the invention, the curing film is arranged on the surface of the enameled wire, and the enameled wire is fixed and supported by the curing film, so that the inductance form is maintained.
As is apparent from the above description, since the enamel wire is fixed and supported by the cured film, the inductance is not dependent on the support of the magnetic core.
Based on the same inventive concept as the foregoing embodiment, the second aspect of the present invention further provides a method for manufacturing a cylindrical inductor, including:
and S11, manufacturing the cylindrical body matrix through machining.
Specifically, the substrate may be a circuit board to which the inductor is connected to the circuit, or may be an independent circuit board, and the present invention is not limited in particular. In S11, a base is formed on the substrate at a position where an inductor is to be provided.
And S12, winding the enameled wire along the cylindrical body base body to form a cylindrical structure.
In a specific implementation process, an enameled wire is wound on the surface of the cylindrical matrix. In addition, when winding the enameled wire, two ends of the enameled wire should be flowed out to be used as two leading-out ends of the inductor. In a specific implementation process, the enameled wire may be a gold-plated enameled wire or a pure gold enameled wire, and may also be other enameled wires, such as a copper enameled wire, and the present invention is not particularly limited.
And S13, fixing the enameled wire by using the curing resin.
The curing resin can adopt photosensitive glue.
When the enameled wire is fixed by using the curing resin, it is required to detect whether the surface of the enameled wire is provided with the curing resin in advance.
When the surface of the enameled wire is provided with the curing resin, the curing resin can be directly heated or irradiated by ultraviolet rays, so that the curing resin is deformed and adhered to the surface of the enameled wire, and the enameled wire is cured after being cooled.
And when the surface of the enameled wire does not contain the curing resin, spraying the curing resin on the enameled wire. And then heating the cured resin or irradiating the cured resin by using ultraviolet rays, so that the cured resin is deformed and adhered to the surface of the enameled wire, and the enameled wire is cured after being cooled. Specifically, a curing film substance can be coated on the inner side of the enameled wire, the coated curing film substance can permeate into the inner space, or the curing film substance is directly coated outside the enameled wire when the enameled wire is manufactured, and the curing film is cured in a photosensitive curing or thermosetting mode after the shape of the enameled wire is fixed, so that the enameled wire is fixed and supported, the shape of the enameled wire is maintained, and a stable magnetic field can be generated in the enameled wire winding space.
And S14, removing the base body to enable the enameled wire to be wound into a hollow cylindrical structure, wherein two leading-out ends are arranged after the winding is finished.
S15, filling the special soft magnetic material into the hollow cylindrical structure of the enameled wire.
In a specific implementation process, the soft magnetic special material can be directly poured, and a mixture of the soft magnetic special material and epoxy resin can also be poured.
Specifically, if the soft magnetic special material is poured, the soft magnetic special material is filled into the hollow cylindrical structure of the enameled wire by using a drip irrigation filling technology.
Specifically, when a mixture of a soft magnetic unique material and an epoxy resin is poured, the soft magnetic unique material and the epoxy resin are mixed in proportion to form a mixture (the mixture is a liquid filler). And then filling the mixture into the hollow cylindrical structure of the enamel wire by adopting a drip irrigation filling technology.
During filling, one end of the hollow column of the column inductor can be blocked by a blocking object, then soft magnetic special materials are poured into the hollow column of the column inductor, and then the blocking object is removed.
Furthermore, the invention can also be directly poured into the hollow cylindrical interior of the cylindrical inductor, since the soft-magnetic, special material has a very high viscosity, so that the pouring can be carried out even without a screen.
Through one or more embodiments of the present invention, the present invention has the following advantageous effects or advantages:
the invention discloses a cylindrical inductor and a manufacturing method thereof, wherein the cylindrical inductor comprises the following components: winding the enameled wire into a hollow cylindrical structure, wherein the enameled wire is provided with two leading-out ends after the winding is finished; therefore, the cylindrical inductor does not depend on the support of the magnetic core, and the using amount of magnetic materials can be reduced. In addition, the interior of the hollow cylindrical structure of the enameled wire is filled with soft magnetic special materials; and the curing resin is arranged on the surface of the enameled wire and is used for fixing the enameled wire. The soft magnetic special material filled in the hollow interior of the enameled wire has the characteristics of small magnetic flux and low loss, so that the inductance value of the cylindrical inductor can be improved, the soft magnetic special material can be used in a bandwidth of 200 KHz-40 GHz, the application of a uF-level inductor is realized, and the technical effect of expanding the application range of the inductor is achieved.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897898.0A CN107610879B (en) | 2017-09-28 | 2017-09-28 | Columnar inductor and method of making the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897898.0A CN107610879B (en) | 2017-09-28 | 2017-09-28 | Columnar inductor and method of making the same |
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| Publication Number | Publication Date |
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| CN107610879A CN107610879A (en) | 2018-01-19 |
| CN107610879B true CN107610879B (en) | 2021-07-20 |
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| CN112309703B (en) * | 2020-11-03 | 2022-11-29 | 阜阳师范大学 | Solidification method of nanocrystalline magnetic core |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790766A (en) * | 2007-08-31 | 2010-07-28 | 胜美达集团株式会社 | Coil component and manufacturing method of the coil component |
| CN201845638U (en) * | 2010-11-08 | 2011-05-25 | 贵阳顺络迅达电子有限公司 | Broadband inductor |
| CN103915236A (en) * | 2014-04-01 | 2014-07-09 | 黄伟嫦 | Novel inductor and manufacturing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5337762B2 (en) * | 2010-06-25 | 2013-11-06 | 株式会社日立産機システム | Unsaturated polyester resin composition for fixing coils |
| JP5922092B2 (en) * | 2013-12-27 | 2016-05-24 | 東光株式会社 | Electronic component manufacturing method, electronic component |
| CN104200981A (en) * | 2014-08-20 | 2014-12-10 | 深圳市铂科磁材有限公司 | Inductor manufacturing method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790766A (en) * | 2007-08-31 | 2010-07-28 | 胜美达集团株式会社 | Coil component and manufacturing method of the coil component |
| CN201845638U (en) * | 2010-11-08 | 2011-05-25 | 贵阳顺络迅达电子有限公司 | Broadband inductor |
| CN103915236A (en) * | 2014-04-01 | 2014-07-09 | 黄伟嫦 | Novel inductor and manufacturing method thereof |
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