JPS5950081B2 - flyback transformer - Google Patents

flyback transformer

Info

Publication number
JPS5950081B2
JPS5950081B2 JP50040399A JP4039975A JPS5950081B2 JP S5950081 B2 JPS5950081 B2 JP S5950081B2 JP 50040399 A JP50040399 A JP 50040399A JP 4039975 A JP4039975 A JP 4039975A JP S5950081 B2 JPS5950081 B2 JP S5950081B2
Authority
JP
Japan
Prior art keywords
flyback transformer
magnetic core
magnetic
coil
external connection
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
Application number
JP50040399A
Other languages
Japanese (ja)
Other versions
JPS51115622A (en
Inventor
秀夫 菱城
敬二 横内
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP50040399A priority Critical patent/JPS5950081B2/en
Priority to AU10937/76A priority patent/AU494448B2/en
Priority to US05/656,702 priority patent/US4095206A/en
Priority to CA245,439A priority patent/CA1070397A/en
Publication of JPS51115622A publication Critical patent/JPS51115622A/en
Publication of JPS5950081B2 publication Critical patent/JPS5950081B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Coils Or Transformers For Communication (AREA)

Description

【発明の詳細な説明】 この発明は、フライバックトランスの改良に関するもの
であり、すなわち、EE型またはEI型磁芯を用いた外
鉄型の構造と絶縁構成の改善によフリ、磁芯の突き合せ
部分および巻線からの漏洩磁束を少なくして、磁気誘導
に害されやすい他の部品または回路をフライパックトラ
ンスの近くに配置しても誘導障害の影響をほとんど受け
ず、プリント配線基板への取付も簡単な小型軽量で絶縁
特ゝ性がすぐれ、安全性および信頼性が高く、耐久性の
あるフライバックトランスを提供するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a flyback transformer, that is, by improving the outer iron type structure and insulation configuration using an EE type or EI type magnetic core, the flyback transformer can be improved. By reducing the leakage magnetic flux from the butt portions and windings, even if other components or circuits that are easily damaged by magnetic induction are placed near the flypack transformer, they will be hardly affected by induction disturbances, and the printed wiring board can be easily connected. The present invention provides a flyback transformer that is small and lightweight, easy to install, has excellent insulation properties, and is highly safe, reliable, and durable.

最近、消費者保護および省資源化の要求の増大につれ、
テレビジョン受像機においても、安全性Jの強化、使用
部品点数の削減および生産工数の低減が要求され、その
目的の一つとして、フライバックトランスがプリント配
線基板に取付けられる傾向にあり、十分な安全性と耐久
性をそなえたフライバックトランスの小型軽量化とプリ
ント配線基板への取付が簡単で、取付面積が小さく、し
かも、フライバックトランスの囲りに大きなスペースを
とらないで、そのそばに部品を配置しても、その部品や
回路に誘導障害を与えないことが要求されている。
Recently, as demands for consumer protection and resource conservation have increased,
Television receivers are also required to enhance safety, reduce the number of parts used, and reduce production man-hours, and one of the objectives is to install flyback transformers on printed wiring boards. The flyback transformer offers safety and durability, is small and lightweight, and is easy to install on printed wiring boards. Even when components are placed, it is required that they do not cause inductive disturbances to the components or circuits.

従来使用されているフライバックトランスは、テレビジ
ョン受像機の種類、大きさ、要求される性能などによつ
て細部はいろいろ異なるが、ほとんど第1図に示すよう
な構成になつている。
The details of conventionally used flyback transformers vary depending on the type, size, required performance, etc. of the television receiver, but most of them have the configuration shown in FIG. 1.

すなわち、1、2はそれぞれ1次コイルおよび2次コイ
ル(高圧コイル)、3は先端に高圧整流器に接続するた
めの接続キャップ4を設けた高圧引き出し線、5は前記
1次コイル1および2次コイル2のそれぞれからの引き
出し線、6はこの引き出し線5を固定する端子板、7は
この端子板6に設けた金属端子、8はコ型の磁芯、9は
この磁芯8の磁気飽和をさけるためにその突き合せ面に
挿入したスペーサ、10はこの磁芯8の片側の面に位置
する金具、11は端子板6および金具10と磁芯8の間
に挿入したクツシヨン材、12,13はそれぞれ前記端
子板6、磁芯8、スペーサ9、金具10、クツシヨン材
11を一体に固定するためのボルトとナツトである。こ
のような構造のフライバツクトランスは、2次コイル2
のコロナ保護輪の外周部と対向する磁芯8との間の距離
を、コロナ放電が生じないように十分大きくとつている
ため、大きな磁芯を使用しなければならず、小型軽量化
ができないため、フライバツクトランスが大きく重いの
で、プリント配線基板への取付けは、端子板6の金属端
子7をプリント配線基板に設けた孔に挿入して半田付す
るだけでは固定することがで゛きず、ボルト12をプリ
ント配線基板に設けた孔に挿入してナツト513でプリ
ント配線基板とフライバツクトランスを一体化する必要
があり、このようにナツトで締付けるという手間がか・
るし、フライバツクトランスが大きいだけでなく、磁芯
8の磁気飽和をさけるためにその突き合せ面に非磁性体
のスペーサ,9が挿入されており、この部分や磁芯8の
1次コイル1や2次コイル2で覆われていない部分から
多くの漏洩磁束が出ており、この漏洩磁束により誘導障
害を受けやすい部品や回路は、このフライバツクトラン
スのそばに配置することができず、.この誘導障害をさ
けるために、これらの部品や回路をフライバツクトラン
スからかなり離して取付けるので、大きなスペースを必
要とし、その分だけ大きなプリント配線基板を使用しな
ければならず、大巾なコスト高になるし、また、このよ
うなフライバツクトランスを受像管に近づけると、特に
、カラーテレビジヨン受像機ではこの漏洩磁束により電
子ビームが曲げられ、画面のピユリテイがずれるので、
フライバツクトランスを受像管より離して配置しなけれ
ばならず、プリント配線基板の配置の都合や薄型および
小型のカラーテレビジヨン受像機で必要な距離が確保で
きない場合は、フライバツクトランスの磁気シールドを
行なう必要があり、磁気シールド板とフライバツクトラ
ンスの高圧コイル(2次コイル)とは、コLナ放電が発
生しないように十分な間隔をとる必要があるため大きな
場所を必要とするし、また、フライバツクパルスによつ
て生じる磁芯8やボルト12の振動が、端子板6の金属
端子7やボルト12によつてフライバツクトランスが取
付けられているプリント配線基板に伝わり、このプリン
ト配線基板が振動することにより、このプリント配線基
板やこれに取付けられた部品や、さらにプリント配線基
板とシヤーシとの固定面等が耳ざわりな振動音を発生し
たり、磁芯にチヤージされた電荷がボルトや他の部品に
放電して画面上にノイズがあられれる等の数々の障害が
生ずる欠点があつた。
That is, 1 and 2 are a primary coil and a secondary coil (high voltage coil), respectively, 3 is a high voltage lead wire with a connection cap 4 at its tip for connecting to a high voltage rectifier, and 5 is a primary coil 1 and a secondary coil. Lead wires from each of the coils 2, 6 a terminal plate for fixing the lead wires 5, 7 a metal terminal provided on the terminal board 6, 8 a U-shaped magnetic core, and 9 magnetic saturation of the magnetic core 8. 10 is a metal fitting located on one side of the magnetic core 8; 11 is a cushion material inserted between the terminal plate 6 and the metal fitting 10 and the magnetic core 8; 12, Reference numerals 13 denote bolts and nuts for fixing the terminal plate 6, magnetic core 8, spacer 9, metal fitting 10, and cushion material 11 together, respectively. A flyback transformer with such a structure has a secondary coil 2.
Since the distance between the outer periphery of the corona protection ring and the opposing magnetic core 8 is set sufficiently large to prevent corona discharge, a large magnetic core must be used, making it impossible to reduce the size and weight. Therefore, since the flyback transformer is large and heavy, it cannot be fixed to the printed wiring board simply by inserting the metal terminals 7 of the terminal board 6 into the holes provided in the printed wiring board and soldering. It is necessary to insert the bolt 12 into a hole provided in the printed wiring board and use the nut 513 to integrate the printed wiring board and the flyback transformer.
However, not only is the flyback transformer large, but a non-magnetic spacer 9 is inserted in the abutting surface to avoid magnetic saturation of the magnetic core 8, and this part and the primary coil of the magnetic core 8 are A large amount of leakage magnetic flux comes out from the parts not covered by the 1 and secondary coils 2, and components and circuits that are susceptible to inductive disturbances due to this leakage magnetic flux cannot be placed near this flyback transformer. .. In order to avoid this inductive disturbance, these components and circuits are mounted quite far away from the flyback transformer, which requires a large amount of space and a correspondingly large printed wiring board, resulting in a significant increase in costs. Also, if such a flyback transformer is placed close to the picture tube, especially in color television receivers, the leakage magnetic flux bends the electron beam and shifts the picture integrity.
If the flyback transformer must be placed away from the picture tube and the necessary distance cannot be secured due to the layout of the printed wiring board or thin and small color television receivers, the magnetic shield of the flyback transformer should be removed. The magnetic shield plate and the high-voltage coil (secondary coil) of the flyback transformer need to be spaced sufficiently apart from each other to prevent the occurrence of conductor discharge, which requires a large space. The vibrations of the magnetic core 8 and bolts 12 caused by the flyback pulses are transmitted to the printed wiring board on which the flyback transformer is attached by the metal terminals 7 of the terminal plate 6 and the bolts 12, and this printed wiring board Vibration can cause the printed wiring board, the parts attached to it, and the fixed surface between the printed wiring board and the chassis to generate unpleasant vibration noise, and the electric charge in the magnetic core can cause damage to bolts and other objects. It had the disadvantage of causing a number of problems, such as electrical discharge to the parts of the screen and noise appearing on the screen.

また、端子板6として電気絶縁特性の非常にすぐれた高
価な材料のものを使用しないと、使用中に塵埃が付着し
、電位差の大きな金属端子7の間にアークトラツキング
が生じ、絶縁破壊を起すおそれもあつた。以上は使用に
際しての従来の欠点を述べたが、フライバツクトランス
を組立てるときにも次のような欠点がある。
In addition, if the terminal board 6 is not made of an expensive material with very good electrical insulation properties, dust will adhere during use and arc tracking will occur between the metal terminals 7, which have a large potential difference, resulting in dielectric breakdown. There was also a risk of it happening. In addition to the above-mentioned drawbacks of the conventional method in use, there are also the following drawbacks when assembling a flyback transformer.

すなわち、一般に1次コイルおよび2次コイルは絶縁材
料の含浸を行ない、さらに、2次コイルはコロナ保護輪
を設けてあるが、この絶縁材料を含浸し、コロナ保護輪
を成形する工程から組立が完了するまでの作業は非常に
煩雑で手間がか・り、多くの人手を要するし、コイルに
傷をつけたり、引き出し線5を断線させたりするし、引
き出し線5がたるみやすく、複数本の線が互いに接近し
やすかつた。また、左右のナツトを同じ割合で締付ける
ことが難かしく、締付がアンバランスのために磁芯8や
端止板6やボルト12が振動音を出す等の欠点があるし
、また、磁芯は製造する際の成形圧力のバラツキ(磁芯
の密度のバラツキ)や焼成炉内の温度分布やガス濃度の
バラツキによる磁気特性のバラツキによりインダクタン
スがかなリバラツクため、フライバツクトランスの組立
のときに磁芯の特性に合せて、磁気飽和をさけるために
磁芯の突き合せ面に挿入するスペーサの厚さを変えて、
使用範囲の値になるようにしていたが、いろいろな厚さ
のスペーサを準備し、磁芯のロッド毎にスペーサの厚さ
を決めなければならず、非常に煩雑で手間がか・る欠点
があつた。この発明は、上記のような従来の欠点を解決
したもので、第2図以下についてその実施例を説明する
In other words, the primary and secondary coils are generally impregnated with an insulating material, and the secondary coil is also provided with a corona protection ring, but the assembly process begins with the process of impregnating this insulating material and forming the corona protection ring. The work to complete is very complicated and time-consuming, requires a lot of manpower, damages the coil, breaks the lead wire 5, easily loosens the lead wire 5, and requires multiple wires. were easily accessible to each other. In addition, it is difficult to tighten the left and right nuts at the same rate, and as a result of unbalanced tightening, the magnetic core 8, end stop plate 6, and bolt 12 generate vibration noise. When assembling the flyback transformer, the inductance slightly fluctuates due to variations in the molding pressure during manufacturing (variations in the density of the magnetic core) and variations in magnetic properties due to variations in temperature distribution and gas concentration in the firing furnace. In order to avoid magnetic saturation, the thickness of the spacer inserted into the abutting surfaces of the magnetic cores is changed according to the characteristics of the core.
Although the values were set within the usage range, it was necessary to prepare spacers of various thicknesses and determine the spacer thickness for each magnetic core rod, which was very complicated and time-consuming. It was hot. This invention solves the above-mentioned conventional drawbacks, and an embodiment thereof will be described with reference to FIG. 2 and subsequent figures.

第2図は1次コイルおよび比較的低いパルス電圧を取り
出すための補助コイルを巻回した低圧コイル組立体で、
第3図に示すように、外部接続端子15を周知の方法に
より軸方向に設け、各.外部接続端子15の間にスリツ
ト16を設けた端子板部分17と円筒形のコイル支持部
18とが一体となつた難燃性のプラスチツク材料よりな
るボビン19を形成し、この円筒形のコイル支持部18
に、ポリウレタン樹脂などを焼付けた絶縁電線,21を
用いて周知の方法によりプラスチツクフイルム20で層
間絶縁を行ないながら1次コイルおよび補助コイル等の
低圧コイルを巻回し、巻終つた外装部は層間絶縁に用い
たプラスチツクフイルム20を巻きつけポリエステル粘
着テープ(図示せず)などの感圧接着剤をプラスチツク
フイルムに塗布した粘着テープで個定してある。なお、
層数および一層当りの巻数は、フライバツクトランスの
電気的諸要求に従つて決定される。また、巻線の始端、
終端および途中のタツプより引き出さ.れるリード線2
2は端子板部分17に設けられたスリツト16や端子板
部分の表面に沿つて外部接続端子15に半田23等で電
気的、機械的に接続している。第4図は開放終端を持つ
た円筒形のプラスチツニク材料で作られたボビン25に
巻回された環状の高圧コイル(2次コイル)組立体24
を示す。
Figure 2 shows a low voltage coil assembly wound with a primary coil and an auxiliary coil for extracting relatively low pulse voltage.
As shown in FIG. 3, the external connection terminals 15 are provided in the axial direction by a well-known method. A terminal plate portion 17 having a slit 16 between external connection terminals 15 and a cylindrical coil support portion 18 form a bobbin 19 made of a flame-retardant plastic material, and this cylindrical coil support Part 18
Then, low-voltage coils such as the primary coil and auxiliary coil are wound using an insulated wire 21 made of baked polyurethane resin, etc., while performing interlayer insulation with a plastic film 20 by a well-known method, and the finished exterior part is interlayer insulated. The plastic film 20 used in the above is wrapped around the plastic film 20, and the plastic film is individually identified with an adhesive tape coated with a pressure-sensitive adhesive such as a polyester adhesive tape (not shown). In addition,
The number of layers and the number of turns per layer are determined according to the electrical requirements of the flyback transformer. Also, the starting end of the winding,
Pull it out from the end and middle taps. lead wire 2
2 is electrically and mechanically connected to the external connection terminal 15 by solder 23 or the like along the slit 16 provided in the terminal plate portion 17 and the surface of the terminal plate portion. FIG. 4 shows an annular high voltage coil (secondary coil) assembly 24 wound around a cylindrical bobbin 25 made of plastic material with an open end.
shows.

この高圧コイルも周知の方法によりプラスチツクフイル
ム26で層間絶縁を行ないながら絶縁電線27を用いて
巻回した多層巻である。層間絶縁に用いるプラスチツク
フイルムは表面を加工してマツト状にしたものでもよい
。また、層の数、一層当りの巻数、巻巾、層間絶縁の厚
さはフライバツクトランスの電気的諸要求に従つて決定
される。また、第4図に示すように出力端子28が設け
られており、この出力端子28はポリエステルフイルム
などに感圧接着剤を塗布した粘着テープ29により高圧
コイルの外周部に固着され、かつ、この出力端子28に
は絶縁電線27の終端が接続され、絶縁電線27の始端
には引き出しリード線30が接続されている。第5図は
、低圧コイル組立体14の巻線部分を、環状の高圧コイ
ル(2次コイル)組立体24の中央開口に嵌装し、低圧
コイル(1次コイル)のほぼ中央部において、適当な接
着剤により、プラスチツク材料で作られたボビン25を
、低圧コイルの外装部に巻回されたプラスチツクフイル
ム20に固着した、フライバツクトランス線輪体31を
示す。
This high-voltage coil is also a multi-layer winding using an insulated wire 27 while providing interlayer insulation with a plastic film 26 by a well-known method. The surface of the plastic film used for interlayer insulation may be processed into a mat shape. The number of layers, the number of turns per layer, the width of the turns, and the thickness of the interlayer insulation are determined according to the electrical requirements of the flyback transformer. Further, as shown in FIG. 4, an output terminal 28 is provided, and this output terminal 28 is fixed to the outer periphery of the high-voltage coil with an adhesive tape 29 made of polyester film or the like coated with a pressure-sensitive adhesive. A terminal end of an insulated wire 27 is connected to the output terminal 28, and a lead wire 30 is connected to a starting end of the insulated wire 27. FIG. 5 shows that the winding portion of the low voltage coil assembly 14 is fitted into the center opening of the annular high voltage coil (secondary coil) assembly 24, and the winding portion of the low voltage coil assembly 14 is inserted into the center opening of the annular high voltage coil (secondary coil) assembly 24, and then A flyback transformer coil body 31 is shown in which a bobbin 25 made of plastic material is fixed with a suitable adhesive to a plastic film 20 wound around the outer part of a low-voltage coil.

この出力端子28には周知の方法で高圧整流器に接続す
るための高圧リード線32が取り付けられている。第6
図は両外側の磁路片33aより円柱形の中央部磁路片3
3bがgだけ短いE型磁芯33と、両外側の磁路片33
a’と円柱形の中央部磁路片33b’が同じ長さのE型
磁芯33′を突き合せて組立た状態を示す。
Attached to this output terminal 28 is a high voltage lead 32 for connection to a high voltage rectifier in a known manner. 6th
The figure shows a cylindrical central magnetic path piece 3 from both outer magnetic path pieces 33a.
E-type magnetic core 33 where 3b is shorter by g and magnetic path pieces 33 on both outer sides
The E-shaped magnetic core 33' having the same length as a' and the cylindrical central magnetic path piece 33b' are shown in an assembled state.

なお、中央部磁路片に設けた空隙gは磁芯の磁気飽和を
さけるためのもので、その大きさはフライバツクトラン
スの動作条件に従つて決定される。また、一般にフライ
バツクトランスにおいては、漏洩磁束のために中央部磁
路片からはなれた磁路片ほど磁束が少なくなるので、各
部分の磁束密度がおよそ一定になるように両外側の磁路
片の断面積の和が中央部の磁路片の断面積よりも少なく
なるようにして少しでも重量が軽くなるようにしている
にの実施例では両外側の磁路片の断面積の和は、中央部
磁路片の断面積の約94%である)。第7図は、フライ
バツクトランス線輪体31を磁芯33,33′に嵌装し
て組立て、金型に挿入する場合、この磁芯33,33′
により金型を傷付けるのを防ぐために磁芯33,33′
の外周部と側面部に布粘着テープ37等を巻き付けた絶
縁処理のフライバツクトランス34を示す。
Note that the air gap g provided in the central magnetic path piece is for avoiding magnetic saturation of the magnetic core, and its size is determined according to the operating conditions of the flyback transformer. In general, in flyback transformers, magnetic flux decreases as the magnetic path pieces are further away from the central magnetic path piece due to magnetic flux leakage, so the magnetic flux density on both outer magnetic path pieces is In this embodiment, the sum of the cross-sectional areas of the magnetic path pieces on both outer sides is made to be smaller than the cross-sectional area of the magnetic path pieces in the center in order to reduce the weight as much as possible. (approximately 94% of the cross-sectional area of the central magnetic path piece). FIG. 7 shows the magnetic cores 33, 33' when the flyback transformer wire ring 31 is assembled by fitting into the magnetic cores 33, 33' and inserted into the mold.
To prevent the mold from being damaged by the magnetic cores 33, 33'
3 shows an insulated flyback transformer 34 whose outer periphery and side surfaces are wrapped with cloth adhesive tape 37 or the like.

すなわち、第8図に示すように、磁芯33,33′の中
央部磁路片33b,33b’の研摩面に接着剤35,3
5′を塗布し、接着剤35の上に空隙gより薄いスペー
サ36を置き、矢印Aの方向からフライバツクトランス
線輪体31のボビン19の開口部を中央部磁路片33b
に挿入し、次に矢印Bの方向から他方の磁芯33’の中
央部磁路片33b’を、フライバツクトランス線輪体3
1のボビン19の端子板部分17側の中央開口部に挿入
して閉磁路になるように両磁芯33,33′を突き合フ
せ、両磁芯33,33′およびフライバツクトランス線
輪体31を強固に固着する。その後、第9図に示すよう
に、フライバツクトランスの絶縁処理を行なうために成
形金型(図示せず)に挿入する際に、磁芯33,33′
により成形金型が摩滅するのを防ぐために、布粘着テー
プ37(例えば、住友スリーエム(株)の黒色アセテー
ト布粘着テープJf6,ll)等を用いて磁芯33,3
3″の外周部および側面部を覆う。このようにして組立
てられた絶縁処理前のフライバツクトランス34を、適
当な温度に加熱された適当な大きさの成形金型(図示せ
ず)の中に封入し、成形金型の内部を10mmHg以下
の減圧(真空)状態にしておき、この成形金型の中に、
不燃性のシリコーンゴムやラバーライタな不飽和ポリエ
ステルなどの高分子絶縁樹脂39(例えば、KE−12
04LTVシリコーンゴム、WP−2601ラバーライ
クレジンと称して市販されているものなど)を、約10
〜20kg/CIn・程度の圧力で射出注入する。
That is, as shown in FIG. 8, adhesives 35, 3 are applied to the polished surfaces of the central magnetic path pieces 33b, 33b' of the magnetic cores 33, 33'.
5', place a spacer 36 thinner than the gap g on the adhesive 35, and connect the opening of the bobbin 19 of the flyback transformer coil body 31 from the direction of arrow A to the central magnetic path piece 33b.
Then, from the direction of arrow B, insert the central magnetic path piece 33b' of the other magnetic core 33' into the flyback transformer wire wheel body 3.
Insert the magnetic cores 33, 33' into the central opening on the terminal plate portion 17 side of the bobbin 19 of No. 1 and butt them together so as to form a closed magnetic path. The body 31 is firmly fixed. Thereafter, as shown in FIG. 9, the magnetic cores 33, 33' are inserted into a mold (not shown) for insulating the flyback transformer.
In order to prevent the mold from being worn away by the process, the magnetic cores 33, 3 are attached using a cloth adhesive tape 37 (for example, black acetate cloth adhesive tape Jf6, ll manufactured by Sumitomo 3M Ltd.).
The flyback transformer 34 assembled in this way and before insulation treatment is placed in a mold of an appropriate size (not shown) heated to an appropriate temperature. The inside of the mold is kept in a reduced pressure (vacuum) state of 10 mmHg or less, and in this mold,
Polymer insulating resin 39 such as nonflammable silicone rubber or rubber lighter unsaturated polyester (for example, KE-12
04LTV silicone rubber, commercially available as WP-2601 rubber-like resin, etc.), about 10
Injection is performed at a pressure of ~20 kg/CIn.

射出注入する樹脂として、シリコーンゴムKE−120
4LTVを用い、成形金型の温度を140〜150℃に
保つておくと、2〜3分でこのシリコーンゴムの加硫が
完了する。このようにして、高分子絶縁樹脂39をそれ
ぞれのコイルの層間絶縁に用いた各層のプラスチツクフ
イルム20,26の間や、各コイルの絶縁電源21,2
7の間隙に浸透させるとともに、さらに、低圧コイル組
立体14や高圧コイル組立体24との間や、高圧コイル
組立体24と磁芯33,33″との間の間隙などを一体
にモールド成形し、第10図〜第12図に示すように、
外部接続端子15と布粘着テープ37の一部(成形金型
と接する部分)以外は、高分子絶縁樹脂39で被覆され
て絶縁処理されたフライバツクトランス38を完成する
。40は高圧リード線32の引き出し部分に上記高分子
絶縁樹脂39で一体に形成した***部であつて、機械的
強度を高めるとともに、高分子絶縁樹脂39と高圧リー
ド線32との気密性をよくするために設けられており、
その形状および厚さは成形金型の寸法により任意に選定
することができる。
Silicone rubber KE-120 as resin for injection injection
By using a 4LTV and keeping the temperature of the mold at 140 to 150°C, vulcanization of the silicone rubber is completed in 2 to 3 minutes. In this way, the polymer insulating resin 39 is used for interlayer insulation of each coil between the plastic films 20 and 26 of each layer, and the insulated power supplies 21 and 2 of each coil.
In addition to penetrating into the gaps 7, it is also integrally molded into the gaps between the low voltage coil assembly 14 and the high voltage coil assembly 24, and between the high voltage coil assembly 24 and the magnetic cores 33, 33''. , as shown in FIGS. 10 to 12,
A flyback transformer 38 is completed in which the parts other than the external connection terminal 15 and a part of the cloth adhesive tape 37 (the part in contact with the molding die) are coated with a polymeric insulating resin 39 and are insulated. Reference numeral 40 denotes a raised portion integrally formed with the polymer insulating resin 39 on the lead-out portion of the high voltage lead wire 32, which increases the mechanical strength and improves the airtightness between the polymer insulating resin 39 and the high voltage lead wire 32. It is designed to
Its shape and thickness can be arbitrarily selected depending on the dimensions of the molding die.

jなお、上記実施例は、第10図〜第12
図に示すように、外部接続端子15が取付けられている
端止板部分17が高分子絶縁樹脂39で被覆された場合
について述べたが、この端子版付のボビン19の成形材
料として、耐アーク性、耐トラツキ4・ング性のすぐれ
た難燃性の合成樹脂を用いれば、上述の実施例のように
被覆しなくてもよい。また、この実施例では、第6図に
示すような磁芯を用いた場合について述べたが、従来多
く用いられている両外側磁路片の断面積の和と中央部磁
路片の断面積がほぼ等しいEE型磁芯やEI型磁芯の中
央部磁路片に磁気飽和を防ぐための空隙を設けた磁芯を
用いた場合も同様の効果が得られる。また、中央部磁路
片が円柱状のものを用いたものは、断面積が大きくとれ
るためで、断面積に余裕のある場合は角柱状のものを用
いても同様の効果が得られる。この発明は、以上説明し
たように、フライバッノクトランス線輪体31を、磁気
飽和を防ぐための空隙を中央部磁路片に設けたEE型の
磁芯33,33″の中央部磁路片33b,33b″に嵌
装し、磁芯同志および磁芯とフライバツクトランス線輪
体を接着剤で個定し、磁芯の外周部に磁芯の巾よりも少
し広い布粘着テープ37を巻き付けて磁芯の外周部と側
面部を覆つた絶縁処理前のフライバツタトランス34を
適当な大きさの成形金型の中に封入し、成形金型内を減
圧しておいて、不燃性で絶縁性のすぐれた高分子絶縁樹
脂を約10〜20kg/Cm・程度の圧力で射出注入す
ることにより、層間絶縁物であるプラスチツクフイルム
20,26や低圧コイル組立体14の絶縁電線21や高
圧コイル組立体24の絶縁電線27の線間に高分子絶縁
樹脂39を浸透させるとともに、その際に同時に低圧コ
イル組立体14や高圧コイル組立体24の゛側面や外周
部の外装絶縁や、高圧コイル組立体24と磁芯33,3
3″との間隙や、外部接続端子15を取付けた端子板部
分17およびこの外部接続端子]5に接続した低圧コイ
ル組立体14のリード線22や高圧コイル組立体24の
引き出しリード線30および出力端子28と、これに接
続した高圧リード線32の一部などを一体に絶縁成形し
硬化してしまうので、各コイル内部の絶縁とコイル外周
部の外装絶縁が完全に一体となつて貫層絶縁となるので
、コイルの層間絶縁物の端面と外装絶縁との間を走る沿
面放電が防止でき、また、絶縁体中に気泡が生じないの
で、この気泡によるコロナ放電の誘発を防ぐことができ
るし、高圧コイル組立体24と磁芯33,33″との間
隙も単一の固体誘電体で絶縁した構成になつているので
、絶縁耐力が大巾に向上し、高圧コイル組立体24と磁
芯33,33″との間隔を大巾に小さくすることが可能
であり、また、低圧コイル組立体14および高圧コイル
組立体24と磁芯33,33’との小さい空間部を空気
に比べて熱伝導のよい高分子絶縁樹脂で充填することに
より、放熱面積が大きくなり、それだけ磁芯やコイルの
温度上昇を低くできるし、高分子絶縁樹脂が不燃性であ
るのと、多くの部分を磁芯で囲まれており、フライバツ
クトランスを耐火性の囲枠の中に配置する必要がないの
で、さらに温度上昇に余裕ができ、貫層絶縁や単一の固
体裕電体による絶縁構成に伴なう絶縁耐力上昇の結果と
相まつて、コイル寸法および磁芯寸法を小さくすること
ができ、フライバツクトランスを小型軽量化することが
できる。
jThe above embodiments are shown in Figs. 10 to 12.
As shown in the figure, the case has been described in which the end plate portion 17 to which the external connection terminal 15 is attached is coated with the polymer insulating resin 39. If a flame-retardant synthetic resin with excellent properties and tracking resistance is used, it is not necessary to coat the resin as in the above-mentioned embodiments. In addition, in this embodiment, a case was described in which a magnetic core as shown in FIG. A similar effect can be obtained by using an EE-type magnetic core or an EI-type magnetic core in which the magnetic flux density is approximately equal, and a magnetic core in which a gap is provided in the central magnetic path piece to prevent magnetic saturation. Further, the use of a cylindrical central magnetic path piece allows for a large cross-sectional area, and if there is sufficient cross-sectional area, the same effect can be obtained by using a prismatic magnetic path piece. As explained above, the present invention provides a flyback transformer coil body 31 in a central magnetic path of an EE type magnetic core 33, 33'' in which an air gap is provided in the central magnetic path piece to prevent magnetic saturation. The pieces 33b and 33b'' are fitted, the magnetic cores are individually identified with adhesive, and the magnetic core and the flyback transformer wire ring are individually identified with adhesive, and a cloth adhesive tape 37 that is slightly wider than the width of the magnetic core is attached to the outer periphery of the magnetic core. The fly-butter transformer 34, which has been wrapped around the magnetic core to cover the outer periphery and side surfaces of the magnetic core before being insulated, is enclosed in a molding mold of an appropriate size, and the inside of the molding mold is depressurized to ensure that it is non-flammable. By injecting polymer insulating resin with excellent insulation properties at a pressure of about 10 to 20 kg/cm, the plastic films 20 and 26, which are interlayer insulators, the insulated wire 21 of the low voltage coil assembly 14, and the high voltage At the same time, the polymer insulating resin 39 is infiltrated between the wires of the insulated wires 27 of the coil assembly 24, and at the same time, the outer insulation of the sides and outer periphery of the low-voltage coil assembly 14 and the high-voltage coil assembly 24, and the high-voltage coil Assembly 24 and magnetic core 33,3
3'', the terminal plate portion 17 to which the external connection terminal 15 is attached, and the lead wire 22 of the low voltage coil assembly 14 connected to the external connection terminal 5, the lead wire 30 of the high voltage coil assembly 24, and the output. Since the terminal 28 and a part of the high-voltage lead wire 32 connected to it are integrally insulated and hardened, the insulation inside each coil and the outer insulation around the outer periphery of the coil are completely integrated, resulting in through-layer insulation. Therefore, creeping discharge running between the end face of the interlayer insulation of the coil and the exterior insulation can be prevented, and since no air bubbles are generated in the insulator, the induction of corona discharge due to these air bubbles can be prevented. Since the gap between the high-voltage coil assembly 24 and the magnetic cores 33, 33'' is also insulated with a single solid dielectric, the dielectric strength is greatly improved, and the gap between the high-voltage coil assembly 24 and the magnetic cores is insulated. 33, 33'', and the small space between the low voltage coil assembly 14, the high voltage coil assembly 24, and the magnetic cores 33, 33' can be heated more easily than air. By filling with a polymer insulating resin with good conductivity, the heat dissipation area becomes larger and the temperature rise of the magnetic core and coil can be lowered. Since the flyback transformer does not need to be placed inside a fireproof enclosure, there is more room for temperature rises, and it is possible to reduce the Coupled with the increased dielectric strength, the coil dimensions and magnetic core dimensions can be reduced, and the flyback transformer can be made smaller and lighter.

また、第6図に示すように、磁芯33,33′の各部分
の磁束密度がおよそ一定になるように両外側磁路片33
aの断面積の和が中央部磁路片33bの断面積よりも小
さくなるようにした磁芯を採用することにより、一層フ
ライバツクトランスを軽量化することができる。また、
フライバツクトランス線輪体31は、EE型磁芯の中央
部磁路片に嵌装されており、磁束の帰路を形成する磁路
がコイルのまわりにある外鉄型のフライバツクトランス
であるため磁気シールド効果がよく、かつ磁気飽和を防
ぐための空隙も中央部磁路片33b,33b’にのみ設
けてあるので、漏洩磁束が従来のものに比べて非常に少
なく、受像管の近くに配置しても、電子ビームが漏洩磁
束によつて曲げられ、画面のピユリテイがずれる等の影
響は全くなく、さらに、上記の如くフライバツクトラン
ス線輪体は磁芯の両脚に覆われているためシールド板を
用いて磁気シールドする必要もなく、都合のよい場所に
フライバツクトランスを配置することができる。
Further, as shown in FIG. 6, both outer magnetic path pieces 33 are arranged so that the magnetic flux density of each part of the magnetic cores 33, 33' is approximately constant.
By employing a magnetic core in which the sum of the cross-sectional areas of a is smaller than the cross-sectional area of the central magnetic path piece 33b, it is possible to further reduce the weight of the flyback transformer. Also,
The flyback transformer coil body 31 is fitted into the central magnetic path piece of the EE type magnetic core, and is an outer iron type flyback transformer in which the magnetic path that forms the return path of the magnetic flux is around the coil. Since the magnetic shielding effect is good and the air gap to prevent magnetic saturation is provided only in the central magnetic path pieces 33b and 33b', the leakage magnetic flux is very small compared to the conventional one, and it is placed near the picture tube. Even when the electron beam is bent by leakage magnetic flux, there is no effect such as shifting the integrity of the screen.Furthermore, as mentioned above, the flyback transformer wire ring is covered with both legs of the magnetic core, so it is shielded. There is no need for magnetic shielding using a plate, and the flyback transformer can be placed at a convenient location.

従つて、非常に簡単な構成で、小型でかつ軽量化された
フライバツクトランスが得られる。特にフライバツクト
ランス線輪体31から外部への磁気誘導が外側磁路片3
3a,33a’の設けられた両面の方向で完全にシール
ドできるため、この両面の方向に特に磁気誘導に害され
やすい他の部品または回路を集中的に配置して誘導障害
を少な<できるという有利性がある。このように、この
発明になるフライバツクトランスは、漏洩磁束が少なく
、しかも小型軽量にできるため、取付場所の自由度が大
きく、プリント配線基板の回路配置上、一番都合のよい
箇所に取付けることが可能であり、フライバツクトラン
スのそばのプリント配線基板上のスペースをあけること
なく、そのそばまで部品を配置できるので、フライバツ
クトランスの小型化と相まつて、従来のフライバツクト
ランスを用いたときに比べ、プリント配線基板の面積を
大巾に小さくできる。
Therefore, a flyback transformer that is compact and lightweight can be obtained with a very simple configuration. In particular, the magnetic induction from the flyback transformer coil body 31 to the outside is caused by the outer magnetic path piece 3.
Since it can be completely shielded in the direction of both sides where 3a and 33a' are provided, it is advantageous that other parts or circuits that are particularly susceptible to magnetic induction can be concentrated in the direction of these both sides to reduce induction disturbances. There is sex. As described above, the flyback transformer according to the present invention has low leakage magnetic flux and can be made small and lightweight, so there is a large degree of freedom in mounting location, and it can be mounted at the most convenient location in terms of circuit layout on the printed wiring board. This allows components to be placed close to the flyback transformer without leaving any space on the printed wiring board near the flyback transformer, which, together with the miniaturization of the flyback transformer, makes it easier to use conventional flyback transformers. The area of the printed wiring board can be significantly reduced compared to the previous version.

また、その取付も特別の固定金具を必要とせず、フライ
バツクトランスに有する外部接続端子をプリント配線基
板に差し込んで半田付するだけで簡単に取付けることが
できるし、ボルトや金具を使つてフライバツクトランス
の磁芯を固定しないので、磁芯とボルトや金具などとの
接触不完全による画面上の放電ノイズの発生がないし、
ボルトや金具に生じる渦電流や漏洩磁束によりフライバ
ツクトランスのそばの金属類に生じる渦電流等による損
失もなく、それだけ能率も向上する。また、磁芯の外周
面と側面部を布粘着テープで覆つているので、絶縁処理
前のフライバツクトランスを、絶縁処理を行なう成形金
型に出し入れする際に、この成形金型がフライバツクト
ランスの磁芯でこすられて、すりへることがないし、万
一、磁芯33,33′が完全に接着されていないときで
も、上記布粘着テープでこれらの磁芯が固定されている
ので、磁芯の組立がはずれてしまう心配はない。
In addition, the installation does not require any special fixing hardware; it can be easily installed by simply inserting the external connection terminals of the flyback transformer into the printed wiring board and soldering them, and the flyback transformer can be easily installed using bolts or metal fittings. Since the magnetic core of the transformer is not fixed, there is no discharge noise on the screen due to incomplete contact between the magnetic core and bolts, metal fittings, etc.
There is no loss due to eddy currents generated in bolts or metal fittings or leakage magnetic flux, which occurs in metals near the flyback transformer, and efficiency is improved accordingly. In addition, since the outer circumferential surface and side surface of the magnetic core are covered with cloth adhesive tape, when the flyback transformer before insulation treatment is put in and taken out of the molding mold where the insulation treatment will be performed, this molding Even if the magnetic cores 33 and 33' are not completely adhered, these magnetic cores are fixed with the cloth adhesive tape, so the magnetic cores will not rub against each other. There is no need to worry about the assembly coming off.

また、従来のフライバツクトランスに比べ、高圧コイル
の周囲を磁芯で多く囲むので、従来よりもさらに耐燃性
が向上するし、また、磁芯を製造する際の成形圧力のバ
ラツキ(磁芯の密度のバラツキ)や焼成雰囲気のバラツ
キなどによつて生じ’る磁芯の寸法や磁気特性のバラツ
キによるインダクタンスのバラツキを、中央部磁路片に
設けた空隙の寸法を変えることによつて、調節しインダ
クタンスを設計目標値にほぼ合わせることができるので
、フライバツクトランスの組立工程では、ただ磁芯33
,33’を突き合せるだけで、インダクタンスのバラツ
キが非常に少なく、高電圧出力のバラツキの少ないフラ
イバツクトランスが得られるので、組立工程でインダク
タンスを合わせるために空隙の間隔をいろいろ変えて調
節する等の煩雑で手間のか・る作業が不要となる。
In addition, compared to conventional flyback transformers, the high-voltage coil is surrounded by more magnetic cores, which improves flame resistance even more than before. Variations in inductance due to variations in the dimensions of the magnetic core and magnetic properties caused by variations in the density (dispersions in density) and variations in the firing atmosphere can be adjusted by changing the dimensions of the air gap provided in the central magnetic path piece. Therefore, in the flyback transformer assembly process, the inductance can be adjusted almost to the design target value.
, 33', a flyback transformer with very little variation in inductance and little variation in high voltage output can be obtained, so in order to match the inductance during the assembly process, the gap spacing can be adjusted in various ways. This eliminates the need for complicated and time-consuming work.

さらに、外部接続端子が取付けてある端子板部分を絶縁
性のすぐれた高分子絶縁樹脂で覆うことにより、端子板
の材質に関係なく、外部接続端子間の耐アーク性や耐ト
ラツキング性も大巾に向上させることができるし、各外
部接続端子の間に設けられたスリツトにも前記高分子絶
縁樹脂が充填されるので、外部接続端子が取付けてある
端子板部分の表面に沿つて、外部接続端子間で沿面放電
を起こす心配もないし、また、この高分子絶縁樹脂とし
てシリコーンゴムや不飽和ポリエステル等のラバーライ
クな絶縁樹脂を用いれば、フライバツクトランスをプリ
ント配線基板に取付けた場合、この絶縁樹脂がクツシヨ
ンの役目をして、磁芯やコイルの振動がプリント配線基
板に伝わるのを防ぎ、プリント配線基板上の各電気部品
やプリント配線基板が耳ざわりな振動音を発することも
ないし、フライバツクトランス全体がラバーライクな高
分子絶縁樹脂で覆われているので、磁芯や各コイルの振
動も吸収され、従来のフライバツクトランスのように耳
ざわりな振動音を発することもないので振動音を防止す
るためにフライバツクトランスとプリント配線基板の間
に挿入するクツシヨン材やプリント配線基板とシヤーシ
との取付部分に挿入するブツシング等を必要としない。
Furthermore, by covering the terminal board portion where the external connection terminals are attached with a high-polymer insulating resin, the arc resistance and tracking resistance between the external connection terminals are greatly improved, regardless of the material of the terminal board. Since the slits provided between the external connection terminals are also filled with the polymer insulating resin, the external connection terminals can be There is no need to worry about creeping discharge occurring between the terminals, and if a rubber-like insulating resin such as silicone rubber or unsaturated polyester is used as the polymer insulating resin, when the flyback transformer is mounted on a printed wiring board, this insulation The resin acts as a cushion and prevents the vibrations of the magnetic core and coil from being transmitted to the printed wiring board, preventing the electrical components on the printed wiring board and the printed wiring board from emitting unpleasant vibration noises, and preventing flybacks. Since the entire transformer is covered with a rubber-like polymeric insulating resin, vibrations from the magnetic core and each coil are absorbed, and unlike conventional flyback transformers, no harsh vibration noise is emitted, thereby preventing vibration noise. In order to do this, there is no need for a cushion material to be inserted between the flyback transformer and the printed wiring board, or a bushing to be inserted into the mounting portion between the printed wiring board and the chassis.

・さらに、従来のように、低圧コイルと高圧コイルを組
み合せたフライバツクトランス線輪体のみを成形金型に
入れて、高分子絶縁樹脂を各コイルの線間に浸透させる
とともに、高圧コイルの外周部にコロナ放電の保護輪を
成形する場合のよう:に、リード線の前処理や成形後の
リード線の後処理や、リード線やボビンに付着した高分
子絶縁樹脂を取り去る手間も必要としないので、大巾に
手間がはぶけるし、また、リード線22,30は高分子
絶縁樹脂層内に固定されるため、電位差の大,きなリー
ド線が接近しても、コロナ放電の発生や絶縁破壊のおそ
れがないし、成形作業や組立作業中にリード線などを断
線させてしまう必配もなく、リード線や端子板部分が絶
縁性のすぐれた樹脂で覆われているので塵埃の付着によ
る悪影響も3ない。このように、EE型の磁芯またはE
I型の磁芯を用いた外鉄型の構造と、絶縁構成の改善と
により、漏洩磁束と高圧特性のバラツキが非常に少なく
、絶縁特性にすぐれ、信頼性が高く、しかも、・小型軽
量でプリント配線基板への取付も簡単で、製造に際して
も複雑な処理を行なわないので、製造工程を大巾に簡略
化でき、生産性の向上と材料費の低減により、原価の低
下に貢献するもので、工業上大きな利益がある。
・Furthermore, as in the past, only the flyback transformer coil body that combines a low-voltage coil and a high-voltage coil is placed in a mold, and the polymer insulating resin is infiltrated between the wires of each coil, and the outer periphery of the high-voltage coil is There is no need to pre-process the lead wires, post-process the lead wires after molding, or remove the polymeric insulating resin that has adhered to the lead wires or bobbin, as in the case of molding a corona discharge protection ring on the bobbin. This requires a lot of time and effort, and since the lead wires 22 and 30 are fixed within the polymer insulating resin layer, even if large potential differences or large lead wires approach each other, corona discharge may occur. There is no risk of insulation breakdown, and there is no need to break the lead wires during molding or assembly work, and the lead wires and terminal board parts are covered with resin with excellent insulation, so there is no risk of dust adhering to them. There are no negative effects. In this way, EE type magnetic core or E
Due to the outer iron type structure using an I-type magnetic core and improved insulation configuration, there is very little variation in leakage magnetic flux and high voltage characteristics, excellent insulation characteristics, and high reliability.Moreover, it is small and lightweight. It is easy to attach to a printed wiring board and does not require complicated processing during manufacturing, which greatly simplifies the manufacturing process, contributing to lower costs by improving productivity and reducing material costs. , has great industrial benefits.

なお、コイルの層間絶縁を行なつたプラスチツクフイル
ムは、一般に可燃性であるが、コイルの局部的発熱によ
り、たとえ過熱しても不燃性の高分子絶縁樹脂(テレビ
ジヨン受像機が有する電力程度では燃焼し続けない程度
の不燃性の樹脂)と磁芯により、完全に外気と遮断され
ているため発火するおそれがない。
The plastic film used to insulate the coil between layers is generally flammable, but the local heat generation of the coil causes the polymer insulation resin, which is non-flammable even if overheated (at the same level of power that a television receiver has) There is no risk of ignition because it is completely isolated from the outside air due to the non-flammable resin (which does not continue to burn) and the magnetic core.

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

第1図A,Bは従来のフライバツクトランスの側面図お
よび正面図である。 第2図以下はこの発明の実施例を示すものであり、第2
図は低圧コイル組立体の斜視図、第3図は低圧コイル組
立体のボビンの斜視図、第4図は高圧コイル組立体の斜
視図、第5図はこれら低圧、高圧コイル組立体を結合さ
せてできたフライバツクトランス線輪体の斜視図、第6
図は磁芯の斜視図、第7図は磁芯とフライバツタトラン
ス線輪体とを結合させてできた絶縁処理前のフライバツ
クトランスの斜視図、第8図は上記磁芯とフライバツク
トランス線輪体との結合を説明するための斜視図、第9
図は上記結合が行なわれた磁芯の外周部に布粘着テープ
を巻き付ける説明の斜視図、第10図は絶縁処理して完
成したフライバツクトランスの斜視図、第11図および
゛第12図は第10図のフライバツクトランスのそれぞ
れ異なる位置の側断面図である。14・・・・・・低圧
コイル組立体、]5・・・・・・外部接続端子、16・
・・・・・スリツト、17・・・・・・端子板部分、1
8・・・・・・コイル支持部、19・・・・・・ボビン
、21・・・・・・電線、22・・・・・・リード線、
24・・・・・・高圧コイル組立体、25・・・・・・
ボビン、27・・・・・・電線、28・・・・・・出力
端子、30・・・・・・リード線、3]・・・・・・フ
ライバツクトランス線輪体、32・・・・・・高圧リー
ド線、33,33″・・・・・・磁芯、33a,33a
″・・・・・・両外側磁路片、33b,33b″・・・
・・・中央部磁路片、34・・・・・・絶縁処理前のフ
ライバツクトランス、36・・・・・・スペーサ、37
・・・・・・布粘着テープ、38・・・・・・絶縁処理
されたフライバツクトランス、39・・・・・・高分子
絶縁樹脂。
1A and 1B are a side view and a front view of a conventional flyback transformer. Figure 2 and the following diagrams show embodiments of this invention.
Figure 3 is a perspective view of the low voltage coil assembly, Figure 3 is a perspective view of the bobbin of the low voltage coil assembly, Figure 4 is a perspective view of the high voltage coil assembly, and Figure 5 shows the combination of these low voltage and high voltage coil assemblies. Perspective view of a flyback transformer wire wheel made of
The figure is a perspective view of the magnetic core, Figure 7 is a perspective view of the flyback transformer before insulation treatment, which is made by combining the magnetic core and the flyback transformer wire ring, and Figure 8 is the above magnetic core and flyback transformer. A perspective view for explaining the connection with the transformer wire ring body, No. 9
The figure is a perspective view illustrating wrapping a cloth adhesive tape around the outer periphery of the magnetic core that has been bonded as described above, Figure 10 is a perspective view of a flyback transformer completed after insulation treatment, and Figures 11 and 12 are FIG. 11 is a side sectional view of the flyback transformer of FIG. 10 at different positions; 14...Low voltage coil assembly, ]5...External connection terminal, 16...
...Slit, 17...Terminal board part, 1
8... Coil support part, 19... Bobbin, 21... Electric wire, 22... Lead wire,
24... High voltage coil assembly, 25...
Bobbin, 27...Electric wire, 28...Output terminal, 30...Lead wire, 3]...Flyback transformer wire wheel, 32... ...High voltage lead wire, 33,33''...Magnetic core, 33a, 33a
″...Both outer magnetic path pieces, 33b, 33b″...
... Central magnetic path piece, 34 ... Flyback transformer before insulation treatment, 36 ... Spacer, 37
. . . Cloth adhesive tape, 38 . . . Insulated flyback transformer, 39 . . . Polymer insulating resin.

Claims (1)

【特許請求の範囲】[Claims] 1 外部接続端子を有する接続端子板部分を一端に設け
たボビンに巻回された1次コイルに高圧コイルとなる2
次コイルを嵌装してこれらの1次コイルおよび2次コイ
ルのリード線を上記外部接続端子に接続するとともに、
2次コイルの出力端子に高圧リード線を接続して構成し
たフライバックトランス線輪体をE型磁芯の中央磁路片
に嵌装し、かつ、E型またはI型磁芯を前記E型磁芯と
閉磁路になるように突き合せて磁気飽和をさけるための
空隙を中央磁路片に設け、また、上記磁芯同志および磁
芯とフライバックトランス線輪体を固着し、磁芯の外周
部および側面部に粘着テープを巻き付け、このフライバ
ックトランス線輪体の1次コイルおよび2次コイルの電
線間ならびコイル層間と、これら各コイルの外周部およ
びこれら各コイルと磁芯との空間部と、さらに上記外部
接続端子へ接続した各リード線部分および端子板部分を
不燃性の可撓性のある高分子絶縁樹脂により一体に絶縁
成形してなり、前記外部接続端子をプリント配線基板に
接続し固定し得るようにしたフライバックトランス。
1. A primary coil that becomes a high voltage coil is wound around a bobbin that has a connection terminal plate section with external connection terminals at one end. 2.
Fitting the secondary coil and connecting the lead wires of these primary coils and secondary coils to the external connection terminal,
A flyback transformer wire ring constituted by connecting a high voltage lead wire to the output terminal of the secondary coil is fitted into the central magnetic path piece of the E-type magnetic core, and the E-type or I-type magnetic core is connected to the E-type magnetic core. An air gap is provided in the central magnetic path piece to avoid magnetic saturation by abutting the magnetic core to form a closed magnetic path, and the above-mentioned magnetic cores are fixed to each other and the magnetic core and the flyback transformer wire ring to form a closed magnetic path. Adhesive tape is wrapped around the outer periphery and side surfaces of the flyback transformer, and the space between the wires and coil layers of the primary coil and secondary coil of this flyback transformer wire ring, the outer periphery of each of these coils, and the space between each of these coils and the magnetic core is determined. , each lead wire section connected to the external connection terminal, and the terminal board section are integrally insulated and molded with a nonflammable flexible polymeric insulating resin, and the external connection terminal is attached to the printed wiring board. A flyback transformer that can be connected and fixed.
JP50040399A 1975-02-10 1975-04-04 flyback transformer Expired JPS5950081B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP50040399A JPS5950081B2 (en) 1975-04-04 1975-04-04 flyback transformer
AU10937/76A AU494448B2 (en) 1976-02-09 Transformer assembly anda method of manufacturing the assembly
US05/656,702 US4095206A (en) 1975-02-10 1976-02-09 Encapsulated transformer assembly
CA245,439A CA1070397A (en) 1975-02-10 1976-02-10 Trannsformer assembly and a method of manufacturing the assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50040399A JPS5950081B2 (en) 1975-04-04 1975-04-04 flyback transformer

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP7887981A Division JPS5726416A (en) 1981-05-25 1981-05-25 Flyback transformer

Publications (2)

Publication Number Publication Date
JPS51115622A JPS51115622A (en) 1976-10-12
JPS5950081B2 true JPS5950081B2 (en) 1984-12-06

Family

ID=12579572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50040399A Expired JPS5950081B2 (en) 1975-02-10 1975-04-04 flyback transformer

Country Status (1)

Country Link
JP (1) JPS5950081B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030003824A (en) * 2001-07-04 2003-01-14 삼성전기주식회사 A Device for combine Ferrite Core in FBT

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5331376Y2 (en) * 1974-01-16 1978-08-04

Also Published As

Publication number Publication date
JPS51115622A (en) 1976-10-12

Similar Documents

Publication Publication Date Title
US4095206A (en) Encapsulated transformer assembly
US20220384087A1 (en) Inductor Coil and Electromagnetic Component
KR101028054B1 (en) Fully insulated mold transformer and manufacturing method thereof
JP4794999B2 (en) Lightning proof type low voltage insulation transformer
US5150046A (en) Noise-shielded transformer
JPH04348508A (en) Static induction electric device
JPS60210829A (en) Manufacture of transformer
US6414291B1 (en) Transformer for a microwave oven
US8360039B2 (en) Ignition coil
JP2007281131A (en) Resin-molded coil
JPS5950081B2 (en) flyback transformer
US20220392692A1 (en) Dry-type transformer and winding method thereof
JPS6139723B2 (en)
KR100540462B1 (en) Method for winding transformers
KR102585479B1 (en) Transformer
CN211742886U (en) Electric welding machine inductance structure capable of providing ultrahigh voltage
KR101426342B1 (en) Mold type shunt reactor
KR100520852B1 (en) Fabrication method of non-impregnation transformer
KR101130790B1 (en) Electric transformer and manufacturing method therefor
US20230260691A1 (en) Power Conversion Device
JPH0713205Y2 (en) Shield transformer
JPH0864436A (en) Magnetic sealed transformer
JPH05267082A (en) Zero-phase current transformer
JP3024007B2 (en) Neon transformer
JPS6199314A (en) Stationary induction electric apparatus