JP3410136B2 - Foil winding transformer - Google Patents
Foil winding transformerInfo
- Publication number
- JP3410136B2 JP3410136B2 JP04921693A JP4921693A JP3410136B2 JP 3410136 B2 JP3410136 B2 JP 3410136B2 JP 04921693 A JP04921693 A JP 04921693A JP 4921693 A JP4921693 A JP 4921693A JP 3410136 B2 JP3410136 B2 JP 3410136B2
- Authority
- JP
- Japan
- Prior art keywords
- foil
- terminal plate
- transformer
- coil
- wound
- 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
- Insulating Of Coils (AREA)
- Coils Of Transformers For General Uses (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は各種電子機器に使用され
る箔巻トランスに関するものである。
【０００２】
【従来の技術】近年、トランスは低コスト化、小型化、
大電流化の市場ニーズに対応するため、小巻数でも高結
合を有し、構造的に自動化に向いている箔巻トランスが
注目されるようになってきた。
【０００３】箔巻トランスの構造としては図３に示すも
のが一般的である。
【０００４】以下、従来のトランスについて図３を用い
て説明する。
【０００５】図３は従来のトランスの外観図である。図
３において１はコイルボビン、２はコイル部、３は磁
心、４は引き出しリードである。
【０００６】図３において構成を説明するとコイルボビ
ン１に引き出しリード４を接続した金属箔を絶縁シート
を介して巻回したコイル部２と、このコイル部２の引き
出しリード４を上記コイルボビン１の下端の端子板部１
ａに沿って折り曲げ、端子板部１ａに固定した後、磁心
３を組み込んで箔巻トランスを完成させる。
【０００７】
【発明が解決しようとする課題】しかしながら、上記従
来の図３の構成では、引き出しリード４を接続した金属
箔を絶縁シートを介して巻回するとき、引き出しリード
４がコイルボビン１の端子板部１ａのコーナー部分に接
触し、箔巻線の位置ずれ等が発生し生産性を悪化させる
要因となっていた。
【０００８】図４を用いて詳細な説明を行う。図４は従
来の箔巻トランスの巻線時の状態を示す図である。図４
において巻線時に引き出しリード４がコイルボビン１の
端子板部１ａのコーナー部Ａに接触し、矢印で示す方向
への箔巻線の位置ずれ等が発生し生産性を悪化させる要
因となっていた。この要因対策としては、従来は図４に
おけるＣ寸法、つまり、コイル部２と端子板部１ａとの
距離を大きくして問題を解決していた。
【０００９】しかしながら、従来の方法では図４におけ
るＤ寸法が大きくなるため箔巻トランスの形状も大きく
なるという欠点を有していた。
【００１０】本発明は上記課題を解決するもので、箔巻
トランスを巻線するとき、位置ずれ等の発生で生産性を
悪化させることなく、かつ、トランス形状を小さくでき
るようにして、小型化の市場ニーズに対応できる高品質
の箔巻トランスを安価に提供することを目的とする。
【００１１】
【課題を解決するための手段】上記目的を達成するため
に本発明の箔巻トランスは、テーパ部を設けた端子板部
を下部に有するコイルボビンと、複数の引き出しリード
を接続した金属箔を前記コイルボビンに巻回したコイル
部と、前記コイルボビンに組み込んだ磁心とを備え、前
記テーパ部は、前記端子板部の上面の周縁部端まで設け
た構成である。
【００１２】
【作用】上記構成によって、引き出しリードが端子板部
のテーパ部分に沿って巻回されるため、端子板部との接
触もなくなり、かつ、コイル部と端子板部との距離を大
きくする必要もなくなる。
【００１３】
【実施例】以下、本発明の一実施例を図面を参照しなが
ら説明する。
【００１４】図１は本発明の実施例を示すトランスの外
観図、図２は本発明の箔巻トランスの巻線時の状態を示
す図である。図１、図２において基本的には、図３、図
４における従来と同一構成部分には同一番号を付して詳
細な説明を省略する。図１、図２において従来例と大き
く異なる点は端子板部１ａの上面の周縁部端までテーパ
部５を設けた構成としたことである。
【００１５】図１において構成を説明するとコイルボビ
ン１に引き出しリード４を接続した金属箔を絶縁シート
を介して巻回したコイル部２と、このコイル部２の引き
出しリード４を上記コイルボビン１の端子板部１ａの上
面のテーパ部に沿って折り曲げ、端子板部１ａに固定し
た後、磁心３を組み込んでトランスを完成させる。
【００１６】以上、本実施例によれば、図２に示すよう
にコイルボビン１は上面にテーパ部分５を設けた端子板
部１ａとなっているため、コイル部２の巻回時に引き出
しリード４が端子板部１ａの上面のテーパ部分５に沿っ
て巻回される。このため、引き出しリード４と端子板部
１ａとの接触もなくなり、かつ、コイル部２と端子板部
１ａとの距離Ｃを大きくする必要もなくなる。
【００１７】したがって箔巻トランスを巻線するとき、
巻線位置ずれ等の発生がなく生産性を悪化させることな
く、かつ、トランス形状を小さくできるようにして、小
型化の市場ニーズに対応できる高品質の箔巻トランスを
自動生産し、安価に提供することが可能となる。
【００１８】以上のように本発明の箔巻トランスは、テ
ーパ部は、端子板部の上面の周縁部端まで設けた構成と
したので、（１）巻回時に引き出しリードと端子板部と
の接触がなくなる。
（２）巻線位置ずれ等の発生がなくなり生産性を悪化さ
せることがなくなる。
（３）コイル部と端子板部との距離を大きくする必要も
なくなるため、トランス形状を小さくできる。
【００１９】以上のように多大な効果が生まれ、小型化
の市場ニーズに対応できる高品質の箔巻トランスを自動
生産し、安価に提供することが可能となる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foil-wound transformer used for various electronic devices. [0002] In recent years, transformers have been reduced in cost and size.
In order to meet the market needs for high current, foil-wound transformers, which have high coupling even with a small number of windings and are structurally suitable for automation, have attracted attention. FIG. 3 shows a general structure of a foil-wound transformer. Hereinafter, a conventional transformer will be described with reference to FIG. FIG. 3 is an external view of a conventional transformer. In FIG. 3, 1 is a coil bobbin, 2 is a coil part, 3 is a magnetic core, and 4 is a lead. Referring to FIG. 3, the structure of the coil portion 2 is such that a metal foil having the lead 4 connected to the coil bobbin 1 is wound via an insulating sheet, and the lead 4 of the coil portion 2 is connected to the lower end of the coil bobbin 1. Terminal board part 1
After being bent along a and fixed to the terminal plate portion 1a, the magnetic core 3 is incorporated to complete the foil-wound transformer. [0007] However, in the configuration of FIG. 3 described above, when the metal foil to which the lead 4 is connected is wound through an insulating sheet, the lead 4 is connected to the terminal of the coil bobbin 1. It comes into contact with the corner portion of the plate portion 1a, causing a displacement of the foil winding and the like, which is a factor of deteriorating productivity. A detailed description will be given with reference to FIG. FIG. 4 is a diagram showing a state of a conventional foil-wound transformer during winding. FIG.
At the time of winding, the lead 4 contacts the corner A of the terminal plate 1a of the coil bobbin 1 in the direction indicated by the arrow.
This causes a displacement of the foil winding to the side, which is a factor of deteriorating productivity. As a countermeasure against this factor, conventionally, the problem was solved by increasing the dimension C in FIG. 4, that is, increasing the distance between the coil portion 2 and the terminal plate portion 1a. However, in the conventional method, FIG.
Hakumaki transformer shape for D size increases that also had the disadvantage that large. SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems. When winding a foil-wound transformer, it is possible to reduce the size of the transformer without deteriorating productivity due to displacement or the like and reducing the size of the transformer. The purpose of the present invention is to provide a low-cost, high-quality foil-wound transformer that can meet the needs of the market. In order to achieve the above object, a foil-wound transformer according to the present invention comprises a coil bobbin having a terminal plate portion provided with a tapered portion at a lower portion, and a metal connected to a plurality of lead leads. The coil bobbin has a coil portion wound with a foil, and a magnetic core incorporated in the coil bobbin, and the tapered portion is provided up to a peripheral edge of an upper surface of the terminal plate portion. According to the above construction, the lead lead is wound along the tapered portion of the terminal plate, so that there is no contact with the terminal plate and the distance between the coil and the terminal plate is increased. You don't have to. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external view of a transformer showing an embodiment of the present invention, and FIG. 2 is a diagram showing a state of a foil-wound transformer according to the present invention at the time of winding. In FIGS. 1 and 2, basically, the same components as those of the prior art in FIGS. 3 and 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. FIGS. 1 and 2 are largely different from the conventional example in that a tapered portion 5 is provided up to the peripheral edge of the upper surface of the terminal plate portion 1a. Referring to FIG. 1, the structure will be described. The coil portion 2 is formed by winding a metal foil having the lead 4 connected to the coil bobbin 1 through an insulating sheet, and the lead 4 of the coil portion 2 is connected to the terminal plate of the coil bobbin 1. After bending along the tapered portion on the upper surface of the portion 1a and fixing it to the terminal plate portion 1a, the magnetic core 3 is assembled to complete the transformer. As described above, according to this embodiment, as shown in FIG. 2, the coil bobbin 1 is the terminal plate portion 1a having the tapered portion 5 provided on the upper surface. It is wound along the tapered portion 5 on the upper surface of the terminal plate portion 1a. Therefore, there is no contact between the lead 4 and the terminal plate 1a, and there is no need to increase the distance C between the coil 2 and the terminal plate 1a. Therefore, when winding a foil-wound transformer,
Automatic production of high-quality foil-wound transformers that can meet the needs of the miniaturization market by automatically reducing the size of the transformers without reducing the productivity without the occurrence of winding position shift etc. It is possible to do. As described above, the foil-wound transformer according to the present invention has a configuration in which the tapered portion is provided up to the peripheral edge of the upper surface of the terminal plate portion. There is no contact. (2) There is no occurrence of displacement of the winding position and the like, and the productivity does not deteriorate. (3) Since it is not necessary to increase the distance between the coil portion and the terminal plate portion, the transformer shape can be reduced. As described above, a great effect is produced, and it becomes possible to automatically produce a high-quality foil-wound transformer that can meet the market needs for miniaturization and to provide it at a low cost.
【図面の簡単な説明】
【図１】本発明の一実施例を示す箔巻トランスの正面図
【図２】同箔巻トランスの巻線時の状態を示す正面図
【図３】従来の箔巻トランスの正面図
【図４】従来の箔巻トランスの巻線時の状態を示す正面
図
【符号の説明】
１ コイルボビン
１ａ 端子板部
２ コイル部
３ 磁心
４ 引き出しリード
５ テーパ部BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a foil-wound transformer showing one embodiment of the present invention; FIG. 2 is a front view showing a state of the foil-wound transformer during winding; FIG. Front view of winding transformer [Fig. 4] Front view showing winding state of conventional foil winding transformer [Explanation of reference numerals] 1 Coil bobbin 1a Terminal plate section 2 Coil section 3 Magnetic core 4 Leader lead 5 Tapered section
───────────────────────────────────────────────────── フロントページの続き (72)発明者 金谷 重慶 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭62−18016（ＪＰ，Ａ) 実開 平４−80025（ＪＰ，Ｕ) 実開 平４−103624（ＪＰ，Ｕ) ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeyoshi Kanaya 1006 Kadoma Kadoma, Kadoma City, Osaka Matsushita Electric Kiki Sangyo Co., Ltd. (56) References JP-A-62-1816 (JP, A) Actually open 4-80025 (JP, U) Actually open 4-103624 (JP, U)
Claims (1)
るコイルボビンと、複数の引き出しリードを接続した金
属箔を前記コイルボビンに巻回したコイル部と、前記コ
イルボビンに組み込んだ磁心とを備え、前記テーパ部
は、前記端子板部の上面の周縁部端まで設けた箔巻トラ
ンス。(57) Claims: A coil bobbin having a terminal plate portion provided with a tapered portion at a lower portion, a coil portion formed by winding a metal foil connected to a plurality of lead leads around the coil bobbin, And a magnetic core incorporated in a coil bobbin, wherein the tapered portion is provided up to a peripheral edge of an upper surface of the terminal plate portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04921693A JP3410136B2 (en) | 1993-03-10 | 1993-03-10 | Foil winding transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04921693A JP3410136B2 (en) | 1993-03-10 | 1993-03-10 | Foil winding transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06267766A JPH06267766A (en) | 1994-09-22 |
| JP3410136B2 true JP3410136B2 (en) | 2003-05-26 |
Family
ID=12824766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04921693A Expired - Fee Related JP3410136B2 (en) | 1993-03-10 | 1993-03-10 | Foil winding transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3410136B2 (en) |
-
1993
- 1993-03-10 JP JP04921693A patent/JP3410136B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06267766A (en) | 1994-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |