JP3180262B2 - Thin inductor - Google Patents
Thin inductorInfo
- Publication number
- JP3180262B2 JP3180262B2 JP24070093A JP24070093A JP3180262B2 JP 3180262 B2 JP3180262 B2 JP 3180262B2 JP 24070093 A JP24070093 A JP 24070093A JP 24070093 A JP24070093 A JP 24070093A JP 3180262 B2 JP3180262 B2 JP 3180262B2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- core
- shaped core
- ring
- base
- 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
Landscapes
- Coils Or Transformers For Communication (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に薄型、小形化を可
能にした薄型インダクタに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin inductor which is particularly thin and compact.
【０００２】[0002]
【従来の技術】従来この種のインダクタとしては、図３
及び図４に示すように、ドラム型コア１０に直接、巻線
１６を施し、端子１５が植設された、電気絶縁材製のベ
ース１３の凹部１４に設置し接着固定したものがある。
最近、表面実装部品としての要求が多くなり、そのため
薄型化（製品として高さが約３ｍｍ以下を要求）が追求
されている。しかし、前記インダクタでは該ドラム型コ
ア１０の厚み、特に上下鍔部１１，１２の厚みを薄くす
る必要があり、製造時に該ドラム型コア１０の上下鍔部
１１，１２のヒビ、割れ、カケ等が発生し易くなり生産
性、信頼性が大変悪くなり高価な製品になる欠点があっ
た。2. Description of the Related Art As a conventional inductor of this type, FIG.
As shown in FIG. 4, there is a type in which a winding 16 is directly applied to the drum-type core 10, installed in a concave portion 14 of a base 13 made of an electrically insulating material, in which terminals 15 are implanted, and fixed by adhesion.
Recently, there has been an increasing demand for surface mount components, and as a result, a reduction in thickness (requiring a height of about 3 mm or less as a product) has been pursued. However, in the inductor, it is necessary to reduce the thickness of the drum core 10, particularly the thickness of the upper and lower flanges 11 and 12. And the productivity and the reliability are extremely deteriorated, resulting in an expensive product.
【０００３】[0003]
【発明が解決しようとする課題】解決しようとする課題
は、インダクタを薄型、小形化するための構造、形状に
おいて、従来のドラム型コアを使用する構造では、薄
型、小型化に限界があり、特に、該ドラム型コアの鍔部
の厚みを薄くすると、カケ、割れが生じ信頼性が低下す
ることである。更に薄型化してもインダクタのインダク
タンス値を低下させない構造とすることである。The problem to be solved is that in the structure and shape for reducing the thickness and size of the inductor, the structure using the conventional drum type core has a limit in the thickness and size reduction. In particular, when the thickness of the flange portion of the drum-shaped core is reduced, chips and cracks are generated, and the reliability is reduced. Another object of the present invention is to provide a structure that does not reduce the inductance value of the inductor even when the thickness is reduced.
【０００４】[0004]
【課題を解決するための手段】本発明によれば、ベース
の１面上に棒状コアを組み込むための位置決め用の鍔と
その外側にリング状のコアを組み込む為の鍔とを一体に
成形し、両側端に端子を設けたベースと、前記位置決め
用の鍔の内側の設置空間部に配置された薄型に形成され
た棒状コアと、前記位置決め用鍔と前記リング状コアを
組み込む為の鍔との間の空間部に組み込まれた空芯コイ
ルと、前記リング状コアを組み込む為の鍔の外側に、該鍔
により内側を位置決めされて配置されたリング状コアと
を有し、前記空芯コイルの引出リードを前記両端側の端
子にそれぞれ接続したことを特徴とする薄型インダクタ
が得られる。According to the present invention, a positioning flange for incorporating a rod-shaped core on one surface of a base and a flange for incorporating a ring-shaped core on the outside thereof are integrally formed. A base provided with terminals on both side ends, a thin rod-shaped core disposed in an installation space inside the positioning flange, and a flange for incorporating the positioning flange and the ring-shaped core. An air-core coil incorporated in a space between the air-core coil, and a ring-shaped core arranged outside the flange for incorporating the ring-shaped core and positioned inside by the flange. Are connected to the terminals on both ends, respectively, to obtain a thin inductor.
【０００５】[0005]
【作用】本発明は、両端に端子を有するとともに一面上
に同心状の鍔を持ったベース上に、その中央部で内側の
鍔の内側に薄板状の棒状コアを配し、この棒状コアを囲
むように内側と外側の鍔の間に薄板状の空芯コイルを配
置し、外側の鍔の周りにリング状コアを配置した構造と
した。ドラムコアを使用した従来の構成によるものと比
較し、該ドラムコアの上下の鍔部がないが、空芯コイルを
外側から包むように配設したリング状コアにてインダク
タンスの低下分を補うことができる。コアの上下鍔部が
不要となり、インダクタンスの厚みを薄くすることがで
き、更に、製造もよういとなり、製品が安価になった。According to the present invention, a thin plate-shaped rod-shaped core is arranged on the inside of the inner flange at the center thereof on a base having terminals on both ends and having a concentric flange on one surface, and this rod-shaped core is A thin plate-shaped air-core coil is arranged between the inner and outer flanges so as to surround it, and a ring-shaped core is arranged around the outer flange. Compared with the conventional configuration using a drum core, there is no upper and lower flange portions of the drum core, but a reduction in inductance can be compensated for by a ring-shaped core disposed so as to wrap the air core coil from the outside. The upper and lower flanges of the core are not required, the thickness of the inductance can be reduced, and the production is more convenient, and the product is less expensive.
【０００６】[0006]
【実施例】図１は、本発明による薄型インダクタの分解
斜視図である。図２は本発明による薄型インダクタの斜
視図である。平板四角形状で両側端に端子２を設けたベ
ース１の中央には、薄型に成形された棒状コア５が組み
込まれるための位置決め用の円状の鍔４と、その外側に
リング状のコア７が組み込まれるための円状鍔３が形成
されている。ベース１、円状鍔３、位置決め用の円状の
鍔４の材質は樹脂製で一体熱成形されている。端子２は
コの字状の銅箔を上述の一体成形時にベース１に圧着す
る。或は、一体成形したベース１に銀ペースト等を印
刷、又は接着する方法で端子２は装着される。薄型に成
形された棒状コア５は、ベース１の設置空間部８に組み
込まれ、円環状空芯コイル６は、ベース１の円状の鍔４
並びに円状鍔３間の空間部９に組み込まれる。更にリン
グ状のコア７は、ベース１の円状鍔３により内側が位置
決めによりズレが防止され、同心にて組み込まれる。円
環状空芯コイル６の引出しリードは、端子２にハンダ熔
接される。中央の棒状コア５は開磁路の距離が長く、イ
ンダクタンス値が小さくなるのを防ぐ為、リング状コア
７の組込みにより開磁路距離を短くし、インダクタンス
値を大きくとるための構成となっている。棒状コア５と
リング状コア７の使用により、従来形状のドラムコアと
比較し、薄型にしてもインダクタンス値の低下はなく、
一方、コアも強度的に強くなり、コアの成形が容易にな
る。材料費も安価になり、更に、製造も単純な形状・構
造であるため、機械による自動化が容易である。以上述
べたごとく、本発明によれば、薄型、安価になる利点を
もった薄型インダクタの提供が可能となる。FIG. 1 is an exploded perspective view of a thin inductor according to the present invention. FIG. 2 is a perspective view of a thin inductor according to the present invention. At the center of the base 1 having a rectangular flat plate and terminals 2 provided at both ends, a circular flange 4 for positioning into which a thinly formed rod-shaped core 5 is incorporated, and a ring-shaped core 7 on the outside thereof. Is formed to form a circular flange 3. The base 1, the circular flange 3, and the positioning circular flange 4 are made of resin and are integrally formed by thermoforming. The terminal 2 is formed by pressing a U-shaped copper foil onto the base 1 during the above-mentioned integral molding. Alternatively, the terminals 2 are mounted on the integrally formed base 1 by printing or bonding silver paste or the like. The thin rod-shaped core 5 is incorporated in the installation space portion 8 of the base 1, and the annular air-core coil 6 is connected to the circular flange 4 of the base 1.
In addition, it is incorporated in the space 9 between the circular flanges 3. Further, the ring-shaped core 7 is positioned concentrically by the circular flange 3 of the base 1 to prevent displacement, and is assembled concentrically. The lead of the annular air-core coil 6 is soldered to the terminal 2. The central rod-shaped core 5 has a configuration in which the distance of the open magnetic path is long and the inductance value is reduced by preventing the inductance value from being reduced by incorporating the ring-shaped core 7 to shorten the open magnetic path distance. I have. By using the rod-shaped core 5 and the ring-shaped core 7, compared to the drum core of the conventional shape, even if it is thin, the inductance value does not decrease.
On the other hand, the strength of the core is also increased, and the molding of the core is facilitated. Since the material cost is low and the manufacturing is simple in shape and structure, automation by a machine is easy. As described above, according to the present invention, it is possible to provide a thin inductor having advantages of being thin and inexpensive.
【０００７】[0007]
【発明の効果】以上説明したように、本発明による薄型
インダクタは、ベースの１面上に棒状コアを組み込むた
めの位置決め用の鍔とその外側にリング状のコアを組み
込む為の鍔とを一体に成形し、両側端に端子を設けたベ
ースと、前記位置決め用の鍔の内側の設置空間部に配置
された薄型に形成された棒状コアと、前記位置決め用鍔
と前記リング状コアを組み込む為の鍔との間の空間部に
組み込まれた空芯コイルと、前記リング状コアを組み込
む為の鍔の外側に、該鍔により内側を位置決めされて配
置されたリング状コアとを有し、前記空芯コイルの引出
リードを前記両端側の端子にそれぞれ接続したことを特
徴とするもので、これにより、薄型で、組立作業性が良
く、高い信頼性の薄型インダクタを安価に供給できる。As described above, the thin inductor according to the present invention has a positioning flange for incorporating a rod-shaped core on one surface of a base and a flange for incorporating a ring-shaped core on the outside thereof. And a base formed with terminals at both ends, a thin rod-shaped core disposed in an installation space inside the positioning flange, the positioning flange and the ring-shaped core. An air-core coil incorporated in the space between the flange and the outer periphery of the flange for incorporating the ring-shaped core, a ring-shaped core positioned inside by the flange is disposed, the said The lead-out leads of the air-core coil are connected to the terminals on both ends, respectively, whereby a thin inductor which is thin, has good assembling workability, and has high reliability can be supplied at low cost.
【図１】本発明の薄型インダクタの分解斜視図。各構成
品を示してある図。FIG. 1 is an exploded perspective view of a thin inductor of the present invention. The figure which showed each component.
【図２】コア、コイルがベースに組込まれた本発明によ
る薄型インダクタの完成状態を示す斜視図。FIG. 2 is a perspective view showing a completed state of a thin inductor according to the present invention in which a core and a coil are incorporated in a base.
【図３】従来の薄型インダクタ（ドラムコアに巻線しベ
ースに組込む）の分解斜視図。FIG. 3 is an exploded perspective view of a conventional thin inductor (wound around a drum core and incorporated into a base).
【図４】従来の薄型インダクタの完成状態を示す斜視
図。FIG. 4 is a perspective view showing a completed state of a conventional thin inductor.
１ ベース ２ 端子 ３ 円状鍔 ４ 円状の鍔 ５ 棒状コア ６ 円環状空芯コイル ７ リング状コア ８ 設置空間部 ９ 空間部 １０ ドラムコア １１ （ドラムコアの）上鍔部 １２ （ドラムコアの）下鍔部 １３ （従来の平板状）ベース １４ 凹部 １５ 端子 １６ 巻線 DESCRIPTION OF SYMBOLS 1 Base 2 Terminal 3 Circular flange 4 Circular flange 5 Bar-shaped core 6 Toroidal air-core coil 7 Ring-shaped core 8 Installation space 9 Space 10 Drum core 11 Upper flange 12 (of drum core) Lower flange 12 of drum core Part 13 (conventional flat plate) base 14 recess 15 terminal 16 winding
Claims (1)
めの位置決め用の鍔とその外側にリング状のコアを組み
込む為の鍔とを一体に成形し、両側端に端子を設けたベ
ースと、前記位置決め用の鍔の内側の設置空間部に配置
された薄型に形成された棒状コアと、前記位置決め用鍔
と前記リング状コアを組み込む為の鍔との間の空間部に
組み込まれた空芯コイルと、前記リング状コアを組み込
む為の鍔の外側に、該鍔により内側を位置決めされて配
置されたリング状コアとを有し、前記空芯コイルの引出
リードを前記両端側の端子にそれぞれ接続したことを特
徴とする薄型インダクタ。1. A base having a positioning flange for incorporating a rod-shaped core on one surface of a base and a flange for incorporating a ring-shaped core on the outside thereof, and a base provided with terminals on both ends. A thin rod-shaped core disposed in an installation space inside the positioning flange, and an empty space incorporated in a space between the positioning flange and the flange for incorporating the ring-shaped core. A core coil, and a ring-shaped core that is positioned outside the flange for incorporating the ring-shaped core and is positioned with the inside positioned by the flange, and pulls out the lead of the air-core coil to the terminals on both ends. Thin inductors, each connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24070093A JP3180262B2 (en) | 1993-08-31 | 1993-08-31 | Thin inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24070093A JP3180262B2 (en) | 1993-08-31 | 1993-08-31 | Thin inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0774028A JPH0774028A (en) | 1995-03-17 |
| JP3180262B2 true JP3180262B2 (en) | 2001-06-25 |
Family
ID=17063406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24070093A Expired - Fee Related JP3180262B2 (en) | 1993-08-31 | 1993-08-31 | Thin inductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3180262B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6285272B1 (en) | 1999-10-28 | 2001-09-04 | Coilcraft, Incorporated | Low profile inductive component |
| KR20010045690A (en) * | 1999-11-06 | 2001-06-05 | 이석순 | Surface mounting type inductance coil and method of fabricating the same |
| US6717500B2 (en) | 2001-04-26 | 2004-04-06 | Coilcraft, Incorporated | Surface mountable electronic component |
| US6690255B2 (en) | 2002-02-21 | 2004-02-10 | Coilcraft, Incorporated | Electronic component |
| JP2010118466A (en) * | 2008-11-12 | 2010-05-27 | Tamura Seisakusho Co Ltd | Inductor |
-
1993
- 1993-08-31 JP JP24070093A patent/JP3180262B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0774028A (en) | 1995-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20010321 |
|
| LAPS | Cancellation because of no payment of annual fees |