JPS58101405A - Manufacture of inductor - Google Patents
Manufacture of inductorInfo
- Publication number
- JPS58101405A JPS58101405A JP20043681A JP20043681A JPS58101405A JP S58101405 A JPS58101405 A JP S58101405A JP 20043681 A JP20043681 A JP 20043681A JP 20043681 A JP20043681 A JP 20043681A JP S58101405 A JPS58101405 A JP S58101405A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- winding
- coil
- sheet
- inductor
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000006247 magnetic powder Substances 0.000 claims abstract description 6
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract 2
- 239000000696 magnetic material Substances 0.000 claims description 5
- 238000004898 kneading Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 11
- 239000004020 conductor Substances 0.000 abstract description 6
- 238000005245 sintering Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 3
- 238000005259 measurement Methods 0.000 abstract 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- -1 composed of O Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910000679 solder Inorganic materials 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
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
Abstract
Description
【発明の詳細な説明】
本発明はインダクタの製造方法に関し、特にハンダデツ
プが可能なチップ状インダクタの製造に適した方法を提
供することを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an inductor, and an object of the present invention is to provide a method suitable for manufacturing a chip-shaped inductor that can be soldered in particular.
近年、電子回路の小型化に伴って電子部品の小型化が要
請され、高密度実装用部品として抵抗。In recent years, with the miniaturization of electronic circuits, there has been a demand for smaller electronic components, and resistors have been used as components for high-density mounting.
コンデンサ、トランジスタがチップ化されている。Capacitors and transistors are made into chips.
しかしながら、インダクタにおいてはそのチップ化が遅
れている。これは、エナメル、ポリウレタン等の樹脂か
らなる被膜を施した導線を巻〈従来の型のものは、被膜
の耐熱性に問題があり、ハンダデツプを行なう高密度実
装用のチップ部品として用いることが困難であることに
なる。However, the development of inductors into chips has been delayed. This is a winding conductor wire coated with a resin film such as enamel or polyurethane (conventional types have problems with the heat resistance of the film, making it difficult to use them as chip components for high-density mounting using solder depth). It will be.
この問題点を解決するため、磁性体シート上にコイル状
の導電パターンを形成し、これを連続的に積層する工法
や、導体被膜をレーザで切断してコイルを形成する工法
など数多くの提案がなされている。これらは、それぞれ
にチップインダクタの製造方法として有効な方法である
が、大きなインダクタンス値を得ることが困難なことや
、工程が煩雑になるなどの問題点がある。To solve this problem, many proposals have been made, including a method in which a coil-shaped conductive pattern is formed on a magnetic sheet and then laminated continuously, and a method in which a conductive film is cut with a laser to form a coil. being done. Each of these methods is effective as a method for manufacturing a chip inductor, but there are problems such as difficulty in obtaining a large inductance value and complicated processes.
発明者らは、先に、これら従来における問題点を除去し
、工程が簡単で量産性に富み、大きなインダクタンス値
が得られる方法として、焼成した磁性体棒に導線を巻回
し、得られたコイル素体に磁性体の外装を施して焼成す
る方法を提案したが、本発明はこれの改良された方法に
関するものである。The inventors first developed a coil by winding a conductive wire around a fired magnetic bar as a method that eliminates these conventional problems, has a simple process, is highly suitable for mass production, and can obtain a large inductance value. A method has been proposed in which an element body is coated with a magnetic material and fired, and the present invention relates to an improved method.
すなわち、本発明の特徴とするところは、前記発明者ら
が提案した方法において、コイル素体に磁性粉体をビイ
クル中に混練させて得た磁性体グリーンシートを巻回し
て外装を行なうことにある。In other words, the feature of the present invention is that, in the method proposed by the inventors, the coil body is wrapped with a magnetic green sheet obtained by kneading magnetic powder in a vehicle. be.
以下、実施例に基づき本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail based on Examples.
第１図はコイル素体を示す図であり、磁性体棒１に磁性
体被覆した導線２を巻回し、その両端をＡｑＰｄペース
ト３で固定して電気端子とし、これらによってコイル素
体４を構成している。磁性体棒１は、Ｆｅ２ｅ３．Ｎｉ
Ｏ、ＺｎＯを主成分とする磁性粉体にタラピネオール、
エトセルから成るビイクルを１０％程度混練した後押し
出し成形し、これを焼結完了温度より低い８５０℃で焼
成した。FIG. 1 is a diagram showing a coil body, in which a conductive wire 2 coated with a magnetic material is wound around a magnetic bar 1, and its both ends are fixed with AqPd paste 3 to form an electric terminal, and these constitute a coil body 4. are doing. The magnetic bar 1 is made of Fe2e3. Ni
Magnetic powder mainly composed of O, ZnO, Tarapineol,
About 10% of the vehicle made of Ethocel was kneaded and pushed out, and then fired at 850° C., which is lower than the sintering completion temperature.
導線２にはＡｑＰｄ合金線に線間絶縁を主目的として磁
性体が被覆しであるが、これは必ずしも必要ではなく、
所定の間隔をおいて巻回しても良い。The conductor 2 is an AqPd alloy wire coated with a magnetic material for the main purpose of insulating the wires, but this is not necessarily necessary.
It may be wound at predetermined intervals.
次に、このような構成より成るコイル素体４の周囲に、
第２図に示すような磁性体グリーンシート６を必要回数
巻回して外装を施す。磁性体グリーンシート６は、磁性
粉体とエチルセルローズ。Next, around the coil body 4 having such a configuration,
A magnetic green sheet 6 as shown in FIG. 2 is wound a necessary number of times to provide an exterior. The magnetic green sheet 6 is made of magnetic powder and ethyl cellulose.
ブチラール樹脂などを主体とすＺ周知のビイクルとをよ
く混練し、ドクター・ブレード法により作成した。シー
ト厚は数十〜数百μｍの間で任意に選択できるが、本実
施例では６０μｍとした。第３図に巻回後の形状例を示
す。It was prepared by thoroughly kneading Z with a well-known vehicle mainly composed of butyral resin and using the doctor blade method. Although the sheet thickness can be arbitrarily selected from several tens to hundreds of μm, in this example, it was set to 60 μm. FIG. 3 shows an example of the shape after winding.
外装を施した後、９０Ｃ）Ｃ，２時間の条件で焼成し、
その後、バレル研磨により外装の段差（巻回終端にシー
ト厚の段差が生じる）及び端部のパリを取り、両端にＡ
９Ｐｄペーストをデツプし、第４図に示すチップ状イン
ダクタを得た。得られたチップ状インダクタの性能は、
０．９ｓｍ＋の磁性体棒に６０μｍのＡｑＰｄ線を２０
回巻線したものでＬ＝１４ｐＨ，Ｑ＝ｅｏであった。After applying the exterior, it was fired at 90C for 2 hours.
After that, barrel polishing is performed to remove the steps on the exterior (steps in the sheet thickness occur at the end of the winding) and edges, and the A
A chip-shaped inductor shown in FIG. 4 was obtained by depositing 9Pd paste. The performance of the obtained chip-shaped inductor is
20 60 μm AqPd wires are attached to a 0.9 sm+ magnetic rod.
It was wound with a turn, L=14 pH, and Q=eo.
このように本発明の製造方法では、磁性体グリーンシー
トをコイル素体に巻回して外装を施すために工程が簡単
になり、また巻回回数を調整することによって高精度の
外形寸法が得られる。As described above, in the manufacturing method of the present invention, the process is simplified because the magnetic green sheet is wound around the coil body to provide the exterior, and highly accurate external dimensions can be obtained by adjusting the number of windings. .
なお、上記実施例では個々の磁性体棒に外装を行なう場
合について述べたが、長尺の磁性体棒に複数個のコイル
素体を形成し、上記実施例と同様に磁性体グリーンシー
トを巻回１１、その後側々の素片に分離することによシ
エ数の削減を図ることができる。Although the above embodiment describes the case where each magnetic bar is covered with an exterior, it is also possible to form a plurality of coil bodies on a long magnetic bar and wrap a magnetic green sheet in the same manner as in the above embodiment. The number of shears can be reduced by separating into pieces on the sides after the 11th round.
また上記実施例では、磁性体棒として断面が円形のもの
を用いたが、これは四角形でもまたそれ以上の多角形で
あっても良い。Further, in the above embodiments, a magnetic rod having a circular cross section is used, but it may be a square or a larger polygon.
以上の説明から明らかなように、本発明は基本的には導
線を巻いてコイルとする巻線方式であるため、大きなイ
ンダクタンス値およびＱ値が得られ、また磁性体グリー
ンシートの巻回で外装を施すため、工程が簡単で高精度
の外形寸法が得られるなど、従来にない多くの特徴を有
するものであり、その実用上の価値は大なるものがある
。As is clear from the above explanation, since the present invention is basically a winding method in which a conductor is wound to form a coil, a large inductance value and Q value can be obtained, and the exterior is wrapped with a magnetic green sheet. It has many features not seen before, such as a simple process and the ability to obtain highly accurate external dimensions, and has great practical value.
第１図はコイル素体の一例を示す正面図、第２図はコイ
ル素体に磁性体グリーンシートで外装を行なう工程を示
す側面図、第３図は外装後の形状を示す斜゛視図、第４
図は本発明で得られるインダクタの一例を示す斜視図で
ある。
１・・・・・・磁性体棒、２・・・・・・巻線、３・・
・・・・ＡｑＰｄペースト、４・・・・・・コイル素体
、６・・・・・・磁性体グリーンシート。Fig. 1 is a front view showing an example of the coil body, Fig. 2 is a side view showing the process of sheathing the coil body with a magnetic green sheet, and Fig. 3 is a perspective view showing the shape after the sheathing. , 4th
The figure is a perspective view showing an example of an inductor obtained by the present invention. 1... Magnetic rod, 2... Winding wire, 3...
... AqPd paste, 4 ... Coil element, 6 ... Magnetic green sheet.
Claims (1)
線を巻回してコ°イル素体を形成し、このコイル素体に
磁性体の外装を施し、しかる後、これを焼成してインダ
クタを製造するに際し、前記コイル素体に、磁性粉体を
ビイクル中に混練させて得た磁性体グリーンシートを巻
回して外装を行なうことを特徴とするインダクタの製造
方法。Ferrite is used as the magnetic material, a conductive wire is wound around a fired magnetic rod to form a coil body, this coil body is coated with a magnetic material, and then this is fired to manufacture an inductor. A method for manufacturing an inductor, which comprises wrapping the coil body with a magnetic green sheet obtained by kneading magnetic powder in a vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20043681A JPS58101405A (en) | 1981-12-11 | 1981-12-11 | Manufacture of inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20043681A JPS58101405A (en) | 1981-12-11 | 1981-12-11 | Manufacture of inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58101405A true JPS58101405A (en) | 1983-06-16 |
Family
ID=16424255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20043681A Pending JPS58101405A (en) | 1981-12-11 | 1981-12-11 | Manufacture of inductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58101405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8857043B2 (en) * | 2002-12-30 | 2014-10-14 | Varian Medical Systems, Inc. | Method of manufacturing an implantable marker with a leadless signal transmitter |
-
1981
- 1981-12-11 JP JP20043681A patent/JPS58101405A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8857043B2 (en) * | 2002-12-30 | 2014-10-14 | Varian Medical Systems, Inc. | Method of manufacturing an implantable marker with a leadless signal transmitter |
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