JPH04196507A - Thin type transformer - Google Patents

Abstract

PURPOSE:To obtain a thin type transformer of small height even in the case of a winding requiring a large current, by constituting a secondary winding in a structure wherein thin wide zigzag type plate conductors are bent at the conductor end surface, the part between layers are electrically insulated, and the conductors are combined to form a square space in the center where magnetic flux is concentrated when a current flows through the conductors. CONSTITUTION:A winding which forms a secondary winding is constituted as follows. Conductor 1 is formed in a shape in which a thin plate connects U-shaped adjacent ends and repeats a zigzag configuration, an insulating layer is formed on the conductor surface. The conductor is bent from conductor bending parts 2, shown by broken lines, of the end surfaces of the conductor 1, in the order of arrows A, B, C and D. By stacking them in a square shape, the secondary winding 16 is formed. In a primary winding, a conductor thin plate is cut into an U-shape, and a primary winding 8 is formed by using conductors. Hence in the case of large current capacity, the secondary winding can be constituted of thin planar conductors, so that a thin type transformer capable of thinning the effective height can be constituted. Since the conductors of the primary and the secondary windings are thin, a thin type transformer whose copper loss is small in the case of high frequency application can be obtained.

Description

【発明の詳細な説明】 イ１発明の目的 〔産業上の利用分野〕 本発明は電子機器などに用い、高さ方向を薄くした薄型
トランスに関するものである。DETAILED DESCRIPTION OF THE INVENTION A1.Object of the invention [Field of industrial application] The present invention relates to a thin transformer that is used in electronic equipment and the like and is thin in the height direction.

〔従来の技術〕[Conventional technology]

従来の薄型トランスを組立てた構造の例を第５図に示し
、組立品を第６図に示す。An example of an assembled structure of a conventional thin transformer is shown in FIG. 5, and an assembled product is shown in FIG.

従来の薄型トランスでは、２次巻線（又は１次巻線）を
断面が円形である銅線を用い銅線巻コイル１３を形成し
、銅板の薄板をＵ字状に成形した導体により１次巻線（
又は２次巻線）８を形成し、口字形状の電気絶縁シート
７を分割磁心１０と１次巻線８の間と、１次巻Ｍ８と銅
線巻コイル１３の間に挟み、銅線巻コイル１３を基台４
の鍔５を案内にして組合せ、１次巻線８の端子９を端子
案内溝６に通し、又、銅線巻コイル１３のリード線１４
を接続端子１５にからげ接続し、分割磁心１０を基台４
の鍔５を通して突き合わせて、この外周をコア固定テー
プ１１により固定して薄型トランスが形成されていた。In conventional thin transformers, the secondary winding (or primary winding) is made of copper wire with a circular cross section to form the copper wire-wound coil 13, and the primary winding is made of a conductor made of a thin copper plate shaped into a U-shape. Winding (
or a secondary winding) 8, a square-shaped electrical insulating sheet 7 is sandwiched between the divided magnetic core 10 and the primary winding 8, and between the primary winding M8 and the copper wire-wound coil 13. The winding coil 13 is attached to the base 4
The terminals 9 of the primary winding 8 are passed through the terminal guide groove 6, and the lead wire 14 of the copper wire-wound coil 13 is assembled using the collar 5 as a guide.
Connect the split magnetic core 10 to the connecting terminal 15, and attach the split magnetic core 10 to the base 4.
A thin transformer was formed by abutting each other through the collar 5 and fixing the outer periphery with a core fixing tape 11.

［発明が解決しようとする課題〕 叙上の従来の技術では、２次巻線を形成する際には、特
種な丸線により銅線巻コイルを形成しているため、２次
巻線の電流が大電流を必要とする場合には、銅線径の太
い銅線を使用する必要があり、高さ方向が薄い形状の薄
型トランスを必要とする時には問題があった。[Problem to be solved by the invention] In the conventional technology described above, when forming the secondary winding, the copper wire-wound coil is formed using a special type of round wire, so the current in the secondary winding is When a large current is required, it is necessary to use a copper wire with a large diameter, which poses a problem when a thin transformer with a thin shape in the height direction is required.

本発明は２次巻線に大電流を必要とする巻線においても
、高さ方向が薄型な薄型トランスで特種な線などを使用
せず、巻線を行わずに巻コイルを形成出来る巻線を持っ
た高さの低い薄型トランスを提供することを目的とする
。The present invention is a thin transformer that is thin in the height direction, and can form a coil without using special wires, even when the secondary winding requires a large current. The purpose is to provide a low-profile, thin transformer with the following characteristics.

口１発明の構成 ［課題を解決するための手段］ 本発明は、２次巻線に薄い板状で幅広のＵ字形の一方の
隣り合う端を導体で接続し、ジグザグ状に蛇行した薄板
の電気良導体（以下導体と称す）により構成し、この蛇
行を繰り返して形成する導体を交互に端面で口字状にな
るよう折り曲げ、導体板間は薄い電気絶縁フィルムで電
気絶縁するか、電気絶縁塗料で絶縁して、口の字の中心
に導体に流れる電流が作る磁界が口字状巻線の中心空間
に集中するよう口字形に折り曲げ重ね、２次巻線を形成
することを特徴とする。1. Structure of the invention [Means for solving the problem] The present invention connects one adjacent end of a thin plate-like wide U-shape to a secondary winding with a conductor, and uses a thin plate meandering in a zigzag shape. It consists of a good electrical conductor (hereinafter referred to as "conductor"), and the conductor is formed by repeating this meandering pattern, which is then bent alternately at the end to form an opening shape, and the conductor plates are electrically insulated with a thin electrically insulating film or coated with electrically insulating paint. The secondary winding is formed by folding and overlapping each other in the shape of a mouth so that the magnetic field created by the current flowing through the conductor at the center of the winding concentrates in the center space of the winding.

即ち本発明は、薄板の電気良導体をジグザグ状にしかも
直線状に蛇行させた形状にし、中央にトランスを形成す
る分割磁心の磁脚を挿入する空間を有するよう形成し、
導体の表面に電気絶縁処理を施し、導体端面に沿い折り
曲げて導体に流れる電流による磁界が、折り曲げた環状
導体の中心に磁界が付勢するよう口字状に折り重ねて１
次巻線又は２次巻線を形成し、１次巻線と、１次巻線と
２次巻線を電気絶縁を行う絶縁シートと、２次巻線と、
分割磁心とを基台の鍔を案内に嵌合し組込み構成したこ
とを特徴とする薄型トランスである。That is, in the present invention, a thin plate of good electrical conductor is formed into a zigzag shape and a meandering shape in a straight line, and is formed to have a space in the center into which the magnetic legs of the divided magnetic core forming the transformer are inserted.
The surface of the conductor is electrically insulated and folded along the end face of the conductor so that the magnetic field generated by the current flowing through the conductor is applied to the center of the bent annular conductor.
An insulating sheet that forms a primary winding or a secondary winding and electrically insulates the primary winding and the secondary winding, and the secondary winding;
This thin transformer is characterized in that the split magnetic core is assembled by fitting the flange of the base into the guide.

〔作用〕[Effect]

薄型トランスを構成する２次巻線を、幅広で薄い板状で
Ｕ字形成形した一方の隣り合う端を薄板導体で接続し、
全体がジグザグ状に蛇行した連続した薄板導体にし、蛇
行する導体の端面を交互に内側に折り曲げ、導体に流れ
る電流による磁界が付勢する様に中心に口字形の空間を
成形するように成形する。積層した導体の層間を樹脂フ
ィルムか又は樹脂により接着固定する。The secondary winding that makes up the thin transformer is formed into a U-shape with a wide, thin plate, and one adjacent end of the wire is connected with a thin plate conductor.
The whole is made into a continuous thin plate conductor that meanderes in a zigzag pattern, and the end faces of the meandering conductor are alternately bent inward to form a mouth-shaped space in the center so that the magnetic field generated by the current flowing through the conductor is energized. . The layers of the laminated conductor are bonded and fixed using a resin film or resin.

従って電流容量の大きい場合に於ても２次巻線を薄い板
状導体で形成出来るので、実装高さを薄く出来る薄型ト
ランスを構成出来る。Therefore, even when the current capacity is large, the secondary winding can be formed from a thin plate-shaped conductor, so a thin transformer can be constructed with a reduced mounting height.

又１次巻線、２次巻線の導体の厚さが薄いので、高周波
で使用する時は銅損の値が小さい値の薄型トランスとす
ることが出来る。Furthermore, since the conductors of the primary and secondary windings are thin, a thin transformer with a small copper loss value can be used when used at high frequencies.

〔実施例〕〔Example〕

第１図、第２図に本発明の実施例を示し、第３図と第４
図に薄板により２次巻線を形成する実施例を示す。Embodiments of the present invention are shown in FIGS. 1 and 2, and FIGS.
The figure shows an embodiment in which the secondary winding is formed from a thin plate.

第３図はジグザグ状に成形した蛇行する２次巻線を形成
する薄板導体を示し、第４図に示す薄板導体の成形手順
により２次巻線を形成する。FIG. 3 shows a thin plate conductor forming a meandering secondary winding formed in a zigzag shape, and the secondary winding is formed by the thin plate conductor forming procedure shown in FIG.

第４図に於て本発明に於ける巻線の形成は、薄板をＵ字
形の一方の隣り合う端を接続して蛇行を繰り返した形状
に導体１を形成してあり、導体の表面に電気絶縁層を形
成した後、導体１の端面の破線で示す導体折り曲げ部２
から矢印Ａ、Ｂ、Ｃ１Ｄの順に折り曲げて、これを口字
状に折り重ね第１図に示す２次巻ＭＡ１６を形成する。As shown in FIG. 4, the winding according to the present invention is formed by forming a conductor 1 in the shape of repeating meandering by connecting two adjacent ends of a U-shaped thin plate. After forming the insulating layer, a conductor bent portion 2 shown by a broken line on the end face of the conductor 1 is formed.
From there, it is folded in the order of arrows A, B, and C1D, and then folded in the shape of an opening to form the secondary volume MA16 shown in FIG.

一方１次巻線は導体薄板をＵ字状に切断し、導体により
１次巻線８が形成される。又口字状の絶縁シート７を分
割磁心１０と１次巻線８の間と、１次巻線８と２次巻線
１６との間に挟み、このコイルを基台４の鍔５に案内す
るようにして組み合せ、１次巻線８の端子９と、２次巻
線１６の実装端子３とを端子案内溝６を通して、基台４
の底面に平行に曲げるとことにより実装端子３を形成す
る。ついで分割磁心１０を基台４の鍔５を通して上下方
向から突き合わせて、この外周をコア固定テープ１１に
より固定することにより薄型トランスが構成される。On the other hand, the primary winding 8 is formed by cutting a thin conductor plate into a U-shape. In addition, a square-shaped insulating sheet 7 is sandwiched between the divided magnetic core 10 and the primary winding 8 and between the primary winding 8 and the secondary winding 16, and this coil is guided to the collar 5 of the base 4. The terminals 9 of the primary winding 8 and the mounting terminals 3 of the secondary winding 16 are passed through the terminal guide groove 6, and then placed on the base 4.
The mounting terminal 3 is formed by bending it parallel to the bottom surface of the board. Next, the divided magnetic cores 10 are passed through the collar 5 of the base 4 and abutted against each other from above and below, and the outer periphery is fixed with the core fixing tape 11, thereby constructing a thin transformer.

この構成によると２次巻線に特種な銅線などを使用せず
、薄板幅広導体を使用することから、従来の丸線を使用
することよりも、高さの薄い断面で、電流容量の大きい
薄形トランスとすることを出来る。With this configuration, the secondary winding does not use a special type of copper wire, but uses a thin, wide conductor, so it has a thinner cross-section and a higher current capacity than conventional round wires. It can be made into a thin transformer.

ハ１発明の効果 〔発明の効果〕 以上述べたごとく本発明による薄形トランスは。C1 Effects of the invention 〔Effect of the invention〕 As described above, the thin transformer according to the present invention is as follows.

２次巻線に薄板幅広のジグザグ状に蛇行した導体を、導
体端面で折り曲げ、層間を電気絶縁し、導体に電流が流
れた時、口の字の中央空間に磁界が集中するに字形に組
合せた構造であるので大電流を必要とする巻線において
も高さの薄い薄型トランスの提供が可能となった。The secondary winding is made of thin, wide conductors that meander in a zigzag pattern, bent at the ends of the conductors, electrically insulated between the layers, and assembled into a square shape in which when current flows through the conductors, the magnetic field is concentrated in the center space of the mouth. This structure makes it possible to provide a thin transformer with a small height even for windings that require large currents.

なお本発明の実施例は２次巻線に積層した薄板の導体を
用いた例で説明したが、１次巻線に積層した薄板導体を
用い構成してもよいことは当然である。Although the embodiments of the present invention have been described using a thin plate conductor laminated to the secondary winding, it is of course possible to use a laminated thin plate conductor to the primary winding.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明による薄型トランスの分解斜視図。 第２図は本発明による薄型トランスの組立斜視図。 第３図は本発明による巻線導体の斜視図。 第４図は本発明による導体を用いた巻線の成形の実施例
を示す斜視図。 第５図は従来の薄型トランスの分解斜視図。 第６図は従来の薄型トランスの組立斜視図。 ｌ・・・導体、２・・・導体折り曲げ部、３・・・実装
端子、４・・・基台、５・・・鍔、６・・・端子案内溝
、７・・・絶縁シート、８・・・１次巻線、９・・・端
子、１ｏ・・・分割磁心、１１・・・コア同定テープ、
１２・・・２次実装端子、１３・・・銅線巻コイル、１
４・・・リード線、１５・・・接続端子、１６・・・２
次巻線。 特許出願人　　株式会社トーキン 第１図 第３図FIG. 1 is an exploded perspective view of a thin transformer according to the present invention. FIG. 2 is an assembled perspective view of the thin transformer according to the present invention. FIG. 3 is a perspective view of a wire-wound conductor according to the present invention. FIG. 4 is a perspective view showing an example of forming a winding wire using a conductor according to the present invention. FIG. 5 is an exploded perspective view of a conventional thin transformer. FIG. 6 is an assembled perspective view of a conventional thin transformer. l...Conductor, 2...Conductor bent portion, 3...Mounting terminal, 4...Base, 5...Brim, 6...Terminal guide groove, 7...Insulating sheet, 8 ...Primary winding, 9...terminal, 1o...divided magnetic core, 11...core identification tape,
12... Secondary mounting terminal, 13... Copper wire wound coil, 1
4...Lead wire, 15...Connection terminal, 16...2
Next winding. Patent applicant Tokin Co., Ltd. Figure 1 Figure 3

Claims (1)

【特許請求の範囲】[Claims] １．薄板の電気良導体をジグザグ状にしかも直線状に蛇
行させた形状にし、中央にトランスを形成する分割磁心
の磁脚を挿入する空間を有するよう形成し、導体の表面
に電気絶縁処理を施し、導体端面に沿い折り曲げて導体
に流れる電流による磁界が、折り曲げた環状導体の中心
に磁界が付勢するよう口字状に折り重ねて１次巻線又は
２次巻線を形成し、１次巻線と、１次巻線と２次巻線を
電気絶縁を行う絶縁シートと、２次巻線と、分割磁心と
を基台の鍔を案内に嵌合し組込み構成したことを特徴と
する薄型トランス。1. A thin plate of good electrical conductor is formed into a meandering shape in a zigzag and straight line, with a space in the center for inserting the magnetic legs of the divided magnetic core that forms the transformer, and the surface of the conductor is electrically insulated. The magnetic field caused by the current flowing through the conductor by bending it along the end face is folded in a shape such that the magnetic field is applied to the center of the bent annular conductor to form a primary winding or a secondary winding. , an insulating sheet that electrically insulates the primary winding and the secondary winding, the secondary winding, and the divided magnetic core are assembled by fitting the flange of the base into the guide. .