JPH056829A - Thin transformer - Google Patents

Thin transformer

Info

Publication number
JPH056829A
JPH056829A JP2416642A JP41664290A JPH056829A JP H056829 A JPH056829 A JP H056829A JP 2416642 A JP2416642 A JP 2416642A JP 41664290 A JP41664290 A JP 41664290A JP H056829 A JPH056829 A JP H056829A
Authority
JP
Japan
Prior art keywords
coil
coils
conductor
primary
hole
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
Application number
JP2416642A
Other languages
Japanese (ja)
Inventor
Mitsuo Takahashi
満男 高橋
Hiroyuki Kamata
博行 鎌田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokin Corp
Original Assignee
Tokin Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokin Corp filed Critical Tokin Corp
Priority to JP2416642A priority Critical patent/JPH056829A/en
Publication of JPH056829A publication Critical patent/JPH056829A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a thin transformer excellent in the electromagnetic coupling of primary and secondary coils by constituting the thin transformer through mutually laminating the primary coil composed of a spiral conductor and the secondary coil composed of a U-shaped wide conductor by a film insulator and through having a soft magnetic ferrite core built in a central through-hole. CONSTITUTION:Primary coils 2a, 2b composed of spiral conductors are formed into two coils differing from each other in the winding direction, each of the two coils 2a, 2b is provided with a through-hole 4 at one end of the coil on the central through-hole side, the through-holes 4 are connected by the use of a connecting conductor 2c, and a secondary coil 3 is inserted between the divided two primary coils via insulators 1.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本考案は電子装置に組込むトラン
スに関し、特に薄い導体からなる1次コイルと2次コイ
ルを用い形成した薄型トランスの巻線構造、及びトラン
スの形状に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer incorporated in an electronic device, and more particularly to a winding structure of a thin transformer formed by using a primary coil and a secondary coil made of thin conductor, and a shape of the transformer.

【0002】[0002]

【従来の技術】従来この種のトランスの構造は、図4に
示すように、電気絶縁性を有する樹脂フィルムからなる
絶縁体1と、渦巻き状に形成した1次コイル2dと、U
字形導体から成る2次コイル3が各層毎に作られ、絶縁
体1と絶縁銅線により渦巻き状に形成された1次コイル
2dと、U字型に形成された銅板からなるU字型の導体
の2次コイルは、夫々製造時に交互に積み重ねる構造と
なっており、積み重ねの工数や積み重ね時に発生するず
れによる電気的な絶縁性、及び1次コイルと2次コイル
間の電磁気的な結合に問題があった。
2. Description of the Related Art Conventionally, as shown in FIG. 4, the structure of a transformer of this type has an insulator 1 made of a resin film having an electrically insulating property, a primary coil 2d formed in a spiral shape, and a U coil.
A secondary coil 3 made of a U-shaped conductor is formed for each layer, and a primary coil 2d is formed in a spiral shape by an insulator 1 and an insulated copper wire, and a U-shaped conductor made of a U-shaped copper plate. The secondary coils have a structure in which they are alternately stacked at the time of manufacturing, and there is a problem in the electrical insulation due to the stacking man-hours and the deviation generated during stacking, and the electromagnetic coupling between the primary coil and the secondary coil. was there.

【0003】[0003]

【発明が解決しようとする課題】本考案はこれらの欠点
を除去する為、渦巻き状の1次コイルを2分割し、渦巻
き状導体の巻方向が夫々異なる1次コイルとし、1次コ
イルの中央貫通孔側他端に於てスルーホールを形成し、
夫々のスルーホールを導体により接続して2つに分割し
た1次コイルを2層構造とし、2つの1次コイル間に絶
縁体を介し2次コイルを配置することにより電磁気的な
結合のよい薄型コイルとすることを目的とする。
In order to eliminate these drawbacks, the present invention divides a spiral primary coil into two parts, forming a primary coil in which the spiral conductors have different winding directions, and the center of the primary coil is used. A through hole is formed at the other end of the through hole side,
The primary coil divided into two by connecting each through hole with a conductor has a two-layer structure, and the secondary coil is arranged between the two primary coils with an insulator interposed therebetween, so that electromagnetic coupling is thin and good. It is intended to be a coil.

【0004】[0004]

【課題を解決するための手段】本考案は、巻方向の異な
る2つの渦巻状1次コイルの中央貫通孔側の導体他端に
スルーホールを取りつけて、2つの1次コイルを貫通孔
導体他端から引き出した引き出し導線により接続し、1
次コイルの間に絶縁体を介挿して2次コイルを挿入し、
1次コイルの上下両面に絶縁体を配置して両側より貫通
孔に軟磁性フェライト磁心を組みつけて本考案の薄型ト
ランスとする。
SUMMARY OF THE INVENTION According to the present invention, a through hole is attached to the other end of a conductor on the side of a central through hole of two spiral primary coils having different winding directions to connect the two primary coils to a through hole conductor or the like. Connect by a lead wire drawn from the end, 1
Insert a secondary coil by inserting an insulator between the secondary coils,
Insulators are arranged on both upper and lower surfaces of the primary coil, and soft magnetic ferrite cores are assembled in the through holes from both sides to form the thin transformer of the present invention.

【0005】即ち本考案は、渦巻き状導体からなる1次
コイルと、U字形の幅広導体からなる2次コイルとを層
間に絶縁体を介挿し積層し、中央貫通孔に軟磁性材から
なる磁性コアの磁脚を挿入し組つけてなる薄型トランス
に於て、1次コイルを渦巻き状導体の巻方向が互いに異
なる2つのコイルとし、フェライト磁心を組つける中央
貫通孔側の2つのコイルの導体パターンの他端を互いに
接続し、2つのコイルの間に絶縁体を介し2次コイルを
配置し、多層に積層するよう構成したことを特徴とする
薄型トランスである。
That is, according to the present invention, a primary coil made of a spiral conductor and a secondary coil made of a U-shaped wide conductor are laminated with an insulator interposed between layers, and a magnetic material made of a soft magnetic material is formed in a central through hole. In a thin transformer in which the magnetic legs of the core are inserted and assembled, the primary coil is made up of two coils with different winding directions of the spiral conductor, and the conductors of the two coils on the side of the central through hole where the ferrite core is assembled A thin transformer characterized in that the other ends of the pattern are connected to each other, a secondary coil is arranged between two coils with an insulator interposed therebetween, and the secondary coil is laminated in multiple layers.

【0006】[0006]

【作用】U字形の導体からなる2次コイルは、絶縁体を
間に2つの互いに逆方向に巻回された渦巻き状導体に形
成し、互いの渦巻き状導体に流れる電流による磁界は付
勢される方向となるので、2つの1次コイルに挟まれた
2次コイルとの電磁的結合は従来に比べて優れたものに
なる。1次コイルのスルーホールを設けた側の反対端子
の夫々は、各部導体に直接接続する。
The secondary coil formed of a U-shaped conductor has an insulator formed between two spiral conductors wound in opposite directions, and a magnetic field generated by currents flowing through the spiral conductors is energized. Therefore, the electromagnetic coupling with the secondary coil sandwiched between the two primary coils becomes superior to the conventional one. The opposite terminals of the primary coil on the side where the through holes are provided are directly connected to the conductors of the respective parts.

【0007】[0007]

【実施例】図1は本考案による薄型トランスの構造を示
す斜視図で、積層体中央にU字形の幅広導体からなる2
次コイル3が配置され、絶縁体1を介し、上下両面より
渦巻き状の夫々巻き方向の異なる様配置された導体から
なる1次コイル2a、1次コイル2bによりサンドイッ
チ状に挟まれる、1次コイル2aと1次コイル2bは夫
々導体の巻方向が異なり、貫通孔9側の導体の他端にス
ルーホール4を取り付け、接続導体2cにより外側で接
続する。1次コイル2a、1次コイル2bの巻方向は互
いに逆方向であるのでコイル電流による発生磁界は同一
方向となる。
1 is a perspective view showing the structure of a thin transformer according to the present invention, which is composed of a wide U-shaped conductor at the center of the laminated body.
A primary coil in which a secondary coil 3 is arranged, and sandwiched by a primary coil 2a and a primary coil 2b, which are conductors arranged in a spiral shape from the upper and lower surfaces in different directions, with an insulator 1 interposed between them. The winding directions of the conductors of the 2a and the primary coil 2b are different from each other, and the through hole 4 is attached to the other end of the conductor on the side of the through hole 9 and is connected outside by the connecting conductor 2c. Since the winding directions of the primary coil 2a and the primary coil 2b are opposite to each other, the magnetic fields generated by the coil currents are in the same direction.

【0008】図2は2つの1次コイル2a、2bが接続
導体2cにより接続された状態を示す。
FIG. 2 shows a state in which two primary coils 2a and 2b are connected by a connecting conductor 2c.

【0009】図3は本考案の薄型コイルにフェライト磁
心を組み込んだ薄型トランスの一実施例を示す斜視図で
ある。本考案による薄型トランスの1次コイルは、図2
に示す樹脂フィルムからなる基板に渦巻き状コイルがエ
ッチング或はラミネートで作られ、又表面が電気絶縁さ
れている事から絶縁作業の必要がなく、又薄型トランス
に製作する場合、従来のような巻線工程がない等製作工
程の大幅な削減と、1次コイルを形成する渦巻き状導電
体パターンは、必要な巻回数を逆巻きパターンであり、
接続導体2cにより接続する事によりサンドイッチ構造
となり、又他端により巻始めと巻終りの引き出しが可能
となる。又、サンドイッチ構造のコイルパターンを二組
用いて逆向きに組み立てる事により、巻数調整が可能な
トランスができ、さらに1次コイルと2次コイルパター
ンの結合のばらつきも小さな値となる。なお、1次コイ
ルの導体パターンのスルーホール4の部分と接続導体2
cとの接続は半田、又はスポット溶接により行う。
FIG. 3 is a perspective view showing an embodiment of a thin transformer in which a ferrite core is incorporated in the thin coil of the present invention. The primary coil of the thin transformer according to the present invention is shown in FIG.
The spiral coil is made by etching or laminating on the substrate made of the resin film shown in Fig.3, and the surface is electrically insulated, so there is no need for insulation work. The spiral conductor pattern forming the primary coil is a reverse winding pattern with a required number of windings.
The connection conductor 2c connects to form a sandwich structure, and the other end allows the start and end of winding. In addition, by using two sets of sandwich structure coil patterns and assembling them in the opposite directions, a transformer whose number of turns can be adjusted can be obtained, and the variation in the coupling between the primary coil and the secondary coil pattern becomes small. The through hole 4 of the conductor pattern of the primary coil and the connecting conductor 2
Connection with c is performed by soldering or spot welding.

【0010】[0010]

【発明の効果】以上述べたごとく、本考案による薄型ト
ランスとすることにより、1次コイルの間に2次コイル
が配列されており、巻線工程における組立工数の大幅削
減と、パターン化によるずれをなくした構造により、電
気絶縁特性の向上と、電磁気的結合性の向上という利点
をもった薄型コイルの提供が可能となる。
As described above, by using the thin transformer according to the present invention, the secondary coil is arranged between the primary coils, which greatly reduces the assembly man-hours in the winding process and shifts due to patterning. With the structure without the above, it is possible to provide a thin coil having the advantages of improved electrical insulation characteristics and improved electromagnetic coupling.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案による薄型コイルの構造を示す斜視図。FIG. 1 is a perspective view showing the structure of a thin coil according to the present invention.

【図2】1次コイルを構成する互いに巻き方向が異なる
渦巻き状等の接続を示す斜視図。
FIG. 2 is a perspective view showing a spiral-shaped connection in which the winding directions of the primary coil are different from each other.

【図3】本考案による薄型トランスの斜視図。FIG. 3 is a perspective view of a thin transformer according to the present invention.

【図4】従来の薄型トランスの構造を示す斜視図。FIG. 4 is a perspective view showing a structure of a conventional thin transformer.

【符号の説明】 1 絶縁体 2 1次コイル端子 2a,2b,2d 1次コイル 2c 接続導体 3 2次コイル 4 スルーホール 5 フェライト磁心 9 貫通孔[Explanation of Codes] 1 Insulator 2 Primary coil terminal 2a, 2b, 2d Primary coil 2c Connection conductor 3 Secondary coil 4 Through hole 5 Ferrite core 9 Through hole

Claims (1)

【特許請求の範囲】 【請求項1】 渦巻き状導体からなる1次コイルと、U
字形の幅広導体からなる2次コイルとを層間に絶縁体を
介挿し積層し、中央貫通孔に軟磁性材からなる磁性コア
の磁脚を挿入し組つけてなる薄型トランスに於て、1次
コイルを渦巻き状導体の巻方向が互いに異なる2つのコ
イルとし、フェライト磁心を組つける中央貫通孔側の2
つのコイルの導体パターンの他端を互いに接続し、2つ
のコイルの間に絶縁体を介し2次コイルを配置し、多層
に積層するよう構成したことを特徴とする薄型トラン
ス。
Claim: What is claimed is: 1. A primary coil comprising a spiral conductor, and U.
In a thin transformer in which a secondary coil composed of a wide conductor having a character shape is laminated by interposing an insulator between layers, and a magnetic leg of a magnetic core made of a soft magnetic material is inserted into a central through hole and assembled, The coil is made up of two coils in which the winding directions of the spiral conductors are different from each other, and the two on the side of the central through hole where the ferrite core is assembled
A thin transformer characterized in that the other ends of the conductor patterns of one coil are connected to each other, a secondary coil is arranged between the two coils with an insulator interposed therebetween, and the secondary coil is laminated in multiple layers.
JP2416642A 1990-12-28 1990-12-28 Thin transformer Pending JPH056829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2416642A JPH056829A (en) 1990-12-28 1990-12-28 Thin transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2416642A JPH056829A (en) 1990-12-28 1990-12-28 Thin transformer

Publications (1)

Publication Number Publication Date
JPH056829A true JPH056829A (en) 1993-01-14

Family

ID=18524854

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2416642A Pending JPH056829A (en) 1990-12-28 1990-12-28 Thin transformer

Country Status (1)

Country Link
JP (1) JPH056829A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715392A1 (en) * 1994-12-02 1996-06-05 Hughes Aircraft Company Thermal management using a hybrid spiral/helical winding geometry for inductive charger
WO1998006112A1 (en) * 1996-08-05 1998-02-12 International Power Devices, Inc. Planar transformer
US6144276A (en) * 1998-04-02 2000-11-07 Motorola, Inc. Planar transformer having integrated cooling features
US6356181B1 (en) * 1996-03-29 2002-03-12 Murata Manufacturing Co., Ltd. Laminated common-mode choke coil
US6559750B2 (en) * 2000-07-28 2003-05-06 Murata Manufacturing Co., Ltd. Transformer and electrical device using the same
US7266003B2 (en) 1994-04-26 2007-09-04 Comarco Wireless Technologies, Inc. Programmable power supply
JP2008060351A (en) * 2006-08-31 2008-03-13 Fuji Electric Systems Co Ltd Winding structure of magnetic parts
KR101009650B1 (en) * 2007-12-13 2011-01-19 주식회사 웰드라인 Compacted Plannar Transformer
US8742880B2 (en) 2011-10-28 2014-06-03 Qualcomm Incorporated Single differential transformer core
WO2021061546A1 (en) * 2019-09-24 2021-04-01 Texas Instruments Incorporated Transformers with build-up films
WO2022131753A1 (en) * 2020-12-15 2022-06-23 삼성전자 주식회사 Transformer for low loss, and device comprising same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161895A (en) * 1983-03-07 1984-09-12 Plantex Ltd Apparatus for producing both-side wiring printed board by electroless copper plating

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161895A (en) * 1983-03-07 1984-09-12 Plantex Ltd Apparatus for producing both-side wiring printed board by electroless copper plating

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7613021B2 (en) 1994-04-26 2009-11-03 Comarco Wireless Technologies, Inc Small form factor power supply
US7266003B2 (en) 1994-04-26 2007-09-04 Comarco Wireless Technologies, Inc. Programmable power supply
EP0715392A1 (en) * 1994-12-02 1996-06-05 Hughes Aircraft Company Thermal management using a hybrid spiral/helical winding geometry for inductive charger
US6356181B1 (en) * 1996-03-29 2002-03-12 Murata Manufacturing Co., Ltd. Laminated common-mode choke coil
US6618929B2 (en) 1996-03-29 2003-09-16 Murata Manufacturing Co., Ltd. Laminated common-mode choke coil
WO1998006112A1 (en) * 1996-08-05 1998-02-12 International Power Devices, Inc. Planar transformer
US5781093A (en) * 1996-08-05 1998-07-14 International Power Devices, Inc. Planar transformer
US5949321A (en) * 1996-08-05 1999-09-07 International Power Devices, Inc. Planar transformer
US6144276A (en) * 1998-04-02 2000-11-07 Motorola, Inc. Planar transformer having integrated cooling features
US6559750B2 (en) * 2000-07-28 2003-05-06 Murata Manufacturing Co., Ltd. Transformer and electrical device using the same
JP2008060351A (en) * 2006-08-31 2008-03-13 Fuji Electric Systems Co Ltd Winding structure of magnetic parts
KR101009650B1 (en) * 2007-12-13 2011-01-19 주식회사 웰드라인 Compacted Plannar Transformer
US8742880B2 (en) 2011-10-28 2014-06-03 Qualcomm Incorporated Single differential transformer core
WO2021061546A1 (en) * 2019-09-24 2021-04-01 Texas Instruments Incorporated Transformers with build-up films
WO2022131753A1 (en) * 2020-12-15 2022-06-23 삼성전자 주식회사 Transformer for low loss, and device comprising same

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