JP2715894B2 - Line filter - Google Patents
Line filterInfo
- Publication number
- JP2715894B2 JP2715894B2 JP6004468A JP446894A JP2715894B2 JP 2715894 B2 JP2715894 B2 JP 2715894B2 JP 6004468 A JP6004468 A JP 6004468A JP 446894 A JP446894 A JP 446894A JP 2715894 B2 JP2715894 B2 JP 2715894B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- magnetic
- winding bobbin
- line filter
- closed magnetic
- 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
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- Coils Or Transformers For Communication (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は電子機器の電源回路など
に挿入されてノイズの侵入および漏洩を防止するライン
フィル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 line filter which is inserted in a power supply circuit of an electronic apparatus and the like to prevent noise from entering and leaking.
【０００２】[0002]
【従来の技術】一般にラインフィルタは電源線路におけ
る一対の線路とアース間で発生するコモンモードノイズ
成分を主に防止するために用いられ、その電気回路図は
図１０に示すようになっている。すなわち、ラインフィ
ルタは、ライン電流により発生する磁束が閉磁路を形成
する磁心１２を磁気飽和させないように一対の巻線１１
が互いにライン電流により発生する磁束を打ち消し合う
方向に施した構成になっている。2. Description of the Related Art In general, a line filter is mainly used to prevent a common mode noise component generated between a pair of power supply lines and ground, and its electric circuit diagram is as shown in FIG. That is, the line filter includes a pair of windings 11 so that the magnetic flux generated by the line current does not magnetically saturate the magnetic core 12 forming the closed magnetic circuit.
Have a configuration in which the magnetic fluxes generated by the line current are cancelled.
【０００３】具体的なラインフィルタの構成の一例とし
ては、図１１，図１２に示すようにフェライト等の高透
磁率磁性材料からなる口の字状閉磁路磁心１３の一磁脚
上にあるいは日の字状閉磁路磁心１４の中央磁脚上に２
分割して構成された樹脂成形体からなる巻線ボビン１５
を組込み、この巻線ボビン１５の端面または中央部に設
けた歯車部１６を用いて巻線ボビン１５を回転させるこ
とにより巻線ボビン１５上に一対の巻線１１を施す。As an example of a specific configuration of a line filter, as shown in FIGS. 11 and 12, a line-shaped closed magnetic circuit core 13 made of a magnetic material having a high magnetic permeability such as ferrite is provided on one magnetic leg or on a magnetic pole. 2 on the center leg of the closed magnetic circuit core 14
Winding bobbin 15 made of a resin molded body divided and configured
And a pair of windings 11 is applied on the winding bobbin 15 by rotating the winding bobbin 15 using a gear portion 16 provided at an end surface or a central portion of the winding bobbin 15.
【０００４】次に巻線ボビン１５の鍔部に設けた挿入穴
に金属製端子１７を挿入するかあるいは金属製端子１７
の装着された樹脂成形体からなる端子板１８を上記磁心
１３，１４と巻線ボビン１５からなる構成体に取り付
け、巻線リードを金属製端子１７に巻き付けて半田付等
の方法で接続する。最後に、磁心１３，１４と巻線ボビ
ン１５、端子板１８のガタツキ等を防止するため接着剤
１９を用いてこれらを固定してラインフィルタを構成し
ていた。Next, a metal terminal 17 is inserted into an insertion hole provided in a flange portion of the winding bobbin 15 or the metal terminal 17 is inserted.
A terminal plate 18 made of a resin molded body with the above-mentioned is mounted on a structure composed of the magnetic cores 13 and 14 and the winding bobbin 15, and a winding lead is wound around the metal terminal 17 and connected by a method such as soldering. Finally, a line filter is formed by fixing the magnetic cores 13 and 14, the winding bobbin 15, and the terminal plate 18 with an adhesive 19 in order to prevent the rattle and the like of the terminal plates 18.
【０００５】[0005]
【発明が解決しようとする課題】上記構成のラインフィ
ルタにおいては、端子板１８を取り付けているため、底
面積及び体積が大きいという問題と、接着剤１９を用い
て固定しているため、接着硬化における応力が磁心１
３，１４に加わり、磁心１３，１４に磁気的な歪が発生
し５〜３０％程度のインダクタンスの経時劣化が発生し
ていた。In the line filter having the above-mentioned structure, the terminal board 18 is attached, so that the bottom area and the volume are large. At the magnetic core 1
In addition, magnetic strain was generated in the magnetic cores 13 and 14, and the inductance was deteriorated with time by about 5 to 30%.
【０００６】本発明は以上のような従来の欠点を除去
し、小形で高性能なラインフィルタを提供することを目
的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned drawbacks of the prior art and to provide a small, high-performance line filter.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に本発明は、一体形口の字状閉磁路磁心の一磁脚上ある
いは一体形日の字状閉磁路磁心の中央磁脚上に装着さ
れ、両端の鍔部に突起部を設けた２分割巻線ボビンに一
対の巻線を施し、前記閉磁路磁心と巻線ボビンの中央部
に設けられた歯車部を複数の係合歯を有したコアバンド
で固定して構成されている。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a method in which a single closed-circuit magnetic core having an open mouth or a central magnetic leg of a closed-circuit magnetic core having an integrated date is provided. A pair of windings are applied to a two-part winding bobbin provided with projections on both end flanges, and the closed magnetic path core and a gear part provided at the center of the winding bobbin are engaged with a plurality of engagement teeth. It is configured to be fixed with the core band provided.
【０００８】または、一体形口の字状閉磁路磁心の一磁
脚上あるいは一体形日の字状閉磁路磁心の中央磁脚上に
装着され、両端の鍔部に突起部及び両端の鍔部の外側側
面に複数の溝部を設けた２分割巻線ボビンに一対の巻線
を施し、前記閉磁路磁心と巻線ボビンの両端の鍔部の外
側側面の複数の溝部にコア保持具を挿入し固定して構成
されている。[0008] Alternatively, the flange is mounted on one magnetic leg of the integrated mouth-shaped closed magnetic path core or on the central magnetic leg of the integrated closed-circuit magnetic core, and the protrusions are provided at the flanges at both ends and the flanges at both ends are provided. A pair of windings are applied to a two-part winding bobbin provided with a plurality of grooves on the outer side surface of the core, and a core holder is inserted into the plurality of grooves on the outer side surface of the flange at both ends of the closed magnetic path core and the winding bobbin. It is fixed and configured.
【０００９】[0009]
【作用】上記構成とすることにより、ラインフィルタの
底面積及び体積を小形化でき、かつ、接着剤を使用せず
に閉磁路磁心と巻線ボビンの固定ができ、接着によるイ
ンダクタンスの経時劣化がない高性能なラインフィルタ
の提供が可能となる。According to the above construction, the bottom area and volume of the line filter can be reduced, and the closed magnetic circuit core and the winding bobbin can be fixed without using an adhesive. A high-performance line filter can be provided.
【００１０】[0010]
【実施例】以下、本発明の実施例について図面を用いて
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】（実施例１）図１，図２は本発明の第１の
実施例における縦型と横型のラインフィルタの斜視図、
図３（ａ）はコアバンドの正面図、図３（ｂ）はコアバ
ンドのＡ−Ａ′断面図、図３（ｃ）はコアバンドの底面
図を示す。(Embodiment 1) FIGS. 1 and 2 are perspective views of vertical and horizontal line filters according to a first embodiment of the present invention.
3A is a front view of the core band, FIG. 3B is a cross-sectional view of the core band taken along line AA ′, and FIG. 3C is a bottom view of the core band.
【００１２】図１に示すように、フェライト等の高透磁
率材料からなる一体形口の字状閉磁路磁心１の一磁脚上
に、両端の鍔部に２〜６ヶ所の突起部２と中央部または
端面に歯車部３を設けた樹脂成形体からなる半円状の巻
線ボビン４を２個一磁脚をはさんで嵌合、固定する。As shown in FIG. 1, two or six protrusions 2 are provided on one magnetic leg of an integrated square-shaped closed magnetic path core 1 made of a material having a high magnetic permeability such as ferrite. Two semicircular winding bobbins 4 made of a resin molded body having a gear portion 3 provided at the center or end face are fitted and fixed with one magnetic leg interposed therebetween.
【００１３】次に、この巻線ボビン４の歯車部３を外部
から回転駆動することにより、巻線ボビン４を回転して
巻線ボビン４の２ヶ所の巻線溝に絶縁皮膜銅線を同一方
向に一対の巻線５を巻回する。巻始めおよび巻終りリー
ド線６は、巻線ボビン４の両端の鍔部に設けた貫通穴に
巻線後挿入固定した金属端子７に巻付け、半田付等で接
続する。あるいは、あらかじめ巻線前に巻線ボビン４に
金属端子７を挿入して巻線し、巻線後必要な長さだけ金
属端子７を移動して、プリント基板挿入用端子とし、巻
始めおよび巻終りリード線６を金属端子７に接続しても
良い。Next, by rotating the gear portion 3 of the winding bobbin 4 from the outside, the winding bobbin 4 is rotated, and the same insulating coating copper wire is provided in two winding grooves of the winding bobbin 4. A pair of windings 5 are wound in the direction. The winding start and end lead wires 6 are wound around metal terminals 7 inserted and fixed after winding in through holes provided in the flange portions at both ends of the winding bobbin 4, and connected by soldering or the like. Alternatively, the metal terminal 7 is inserted into the winding bobbin 4 before winding, and the winding is performed. After the winding, the metal terminal 7 is moved by a necessary length to be a terminal for inserting a printed circuit board. The end lead wire 6 may be connected to the metal terminal 7.
【００１４】次に上記一体形口の字状閉磁路磁心１と巻
線ボビン４、巻線５の組立て構成体を固定するコアバン
ド８について図３（ａ）〜（ｃ）を用いて説明する。Next, a description will be given of a core band 8 for fixing an assembled structure of the above-mentioned integrated mouth-shaped closed magnetic circuit core 1, winding bobbin 4, and winding 5 with reference to FIGS. 3 (a) to 3 (c). .
【００１５】コアバンド８は弾性を有する合成樹脂によ
ってコ字状の磁心固定部８ａとリング状のボビン固定部
８ｂとで構成され、ボビン固定部８ｂの磁心固定部８ａ
と対向する部分に分離部８ｃを形成し、この分離部８ｃ
の近傍の内側に複数の係合歯８ｄを有し、その分離部８
ｃは係合できる係合爪８ｅを有している。The core band 8 is composed of a U-shaped magnetic core fixing portion 8a and a ring-shaped bobbin fixing portion 8b made of an elastic synthetic resin, and the magnetic core fixing portion 8a of the bobbin fixing portion 8b.
A separation portion 8c is formed at a portion opposite to the separation portion 8c.
Has a plurality of engaging teeth 8d inside the vicinity of the
c has an engaging claw 8e that can be engaged.
【００１６】前記閉磁路磁心１と巻線ボビン４の中央部
に設けられた歯車部３の外側にコアバンド８を沿わして
係合し、コアバンド８の係合歯８ｄを歯車部３に係合さ
せるとともに係合爪８ｅどうしも係合させてコアバンド
８を固定する。コアバンド８の方向は図２に示すように
閉磁路磁心１を水平方向に組込んだ構成のものに利用す
ることも可能である。The core band 8 is engaged with the outside of the gear portion 3 provided at the center of the closed magnetic path magnetic core 1 and the winding bobbin 4 along the core band 8, and the engaging teeth 8 d of the core band 8 are engaged with the gear portion 3. The core band 8 is fixed by engaging the engaging claws 8e with each other. The direction of the core band 8 can also be used for a configuration in which the closed magnetic circuit core 1 is incorporated in the horizontal direction as shown in FIG.
【００１７】（実施例２）図４，図５は本発明の第２の
実施例における縦型と横型のラインフィルタの斜視図、
図６はコアバンドの斜視図である。(Embodiment 2) FIGS. 4 and 5 are perspective views of vertical and horizontal line filters according to a second embodiment of the present invention.
FIG. 6 is a perspective view of the core band.
【００１８】コアバンド９は閉磁路磁心１に係合される
コ字状の磁心固定部９ａと、円弧状のボビン固定部９ｂ
とを有し、このボビン固定部９ｂの円弧の内周面に複数
の係合歯９ｄを有し、このコアバンド９は弾力性のある
樹脂成形体で構成されている。The core band 9 has a U-shaped magnetic core fixing portion 9a engaged with the closed magnetic circuit core 1 and an arc-shaped bobbin fixing portion 9b.
And a plurality of engaging teeth 9d on the inner peripheral surface of the arc of the bobbin fixing portion 9b. The core band 9 is made of an elastic resin molded body.
【００１９】前記閉磁路磁心１と巻線ボビン４の中央部
に設けられた歯車部３の間にコアバンド９を挿入しボビ
ン固定部９ｂの係合歯９ｄを歯車部３に噛合させて係合
し、閉磁路磁心１に対して巻線ボビン４を固定する。A core band 9 is inserted between the closed magnetic path magnetic core 1 and the gear portion 3 provided at the center of the winding bobbin 4, and the engaging teeth 9d of the bobbin fixing portion 9b engage with the gear portion 3 to engage. Then, the winding bobbin 4 is fixed to the closed magnetic circuit core 1.
【００２０】コアバンド９の方向は図５に示すように横
型のラインフィルタにも応用可能である。The direction of the core band 9 can be applied to a horizontal line filter as shown in FIG.
【００２１】（実施例３）図７，図８は本発明の第３の
実施例における縦型と横型のラインフィルタの斜視図、
図９はコア固定具の斜視図である。(Embodiment 3) FIGS. 7 and 8 are perspective views of vertical and horizontal line filters according to a third embodiment of the present invention.
FIG. 9 is a perspective view of the core fixture.
【００２２】コア固定具１０は前記閉磁路磁心１を覆う
ように組込まれ、巻線ボビン４の両端の鍔部の外側側面
に設けられた溝部４ａにその開放端面１０ａを挿入して
巻線ボビン４を閉磁路磁心１に固定する。The core fixing device 10 is incorporated so as to cover the closed magnetic path magnetic core 1. The open end surface 10a is inserted into a groove 4a provided on the outer side surface of the flange at both ends of the winding bobbin 4, and the winding bobbin is inserted. 4 is fixed to the closed magnetic core 1.
【００２３】コア固定具１０は図８に示すように横型の
ラインフィルタにも適用可能である。The core fixture 10 can be applied to a horizontal line filter as shown in FIG.
【００２４】上記各実施例においては、閉磁路磁心１と
して一体形口の字状のものだけを示したが、一体形日の
字状閉磁路磁心を用い、この閉磁路磁心の中央磁脚に２
分割型の巻線ボビンを組込んで構成することもできる。In each of the above-described embodiments, only the closed mouth magnetic core 1 is shown as a one-piece, closed mouth magnetic core. 2
It is also possible to incorporate a split type winding bobbin.
【００２５】[0025]
【発明の効果】以上の構成とすることにより本発明は、
閉磁路磁心と巻線ボビンに設けられた歯車部または、磁
心と巻線ボビンの両端の鍔の外側側面に設けられた溝部
を利用してコアバンドやコア固定具で閉磁路磁心と巻線
ボビンを固定することにより、閉磁路磁心に加わる接着
剤硬化による応力が除去でき、インダクタンスの経時変
化がほとんどなく、両者の確実な固定でガタツキもなく
品質上の向上も図れラインフィルタの高性能化が可能と
なる。さらに、組立ての作業性が良くラインフィルタの
小形化にも貢献でき、工業的価値の大なるものである。The present invention has the above-described structure,
Using a gear portion provided on the closed magnetic path core and the winding bobbin, or a groove provided on the outer side surface of the flange at both ends of the magnetic core and the winding bobbin, the closed magnetic path core and the winding bobbin with a core band or a core fixture. By fixing the core, the stress caused by the hardening of the adhesive applied to the magnetic core of the closed magnetic circuit can be removed, the inductance hardly changes over time, the two can be securely fixed, and the quality can be improved without rattling. It becomes possible. Further, the assembling workability is good and it can contribute to downsizing of the line filter, which is of great industrial value.
【図１】本発明の第１の実施例における縦型のラインフ
ィルタの斜視図FIG. 1 is a perspective view of a vertical line filter according to a first embodiment of the present invention.
【図２】同横型のラインフィルタの斜視図FIG. 2 is a perspective view of the horizontal line filter.
【図３】（ａ）同実施例におけるコアバンドの正面図 （ｂ）同断面図 （ｃ）同底面図FIG. 3A is a front view of the core band in the embodiment. FIG. 3B is a cross-sectional view. FIG.
【図４】本発明の第２の実施例における縦型のラインフ
ィルタの斜視図FIG. 4 is a perspective view of a vertical line filter according to a second embodiment of the present invention.
【図５】同横型のラインフィルタの斜視図FIG. 5 is a perspective view of the horizontal line filter.
【図６】同実施例におけるコアバンドの斜視図FIG. 6 is a perspective view of a core band in the embodiment.
【図７】本発明の第３の実施例における縦型のラインフ
ィルタの斜視図FIG. 7 is a perspective view of a vertical line filter according to a third embodiment of the present invention.
【図８】同横型のラインフィルタの斜視図FIG. 8 is a perspective view of the horizontal line filter.
【図９】同実施例におけるコア保持具の斜視図FIG. 9 is a perspective view of a core holder in the embodiment.
【図１０】一般的なラインフィルタの回路図FIG. 10 is a circuit diagram of a general line filter.
【図１１】従来のラインフィルタの斜視図FIG. 11 is a perspective view of a conventional line filter.
【図１２】従来のラインフィルタの斜視図FIG. 12 is a perspective view of a conventional line filter.
１ 閉磁路磁心 ２ 突起部 ３ 歯車部 ４ 巻線ボビン ４ａ 巻線ボビンの溝部 ５ 巻線 ６ リード線 ７ 金属製端子 ８ コアバンド ８ａ 磁心固定部 ８ｂ ボビン固定部 ８ｃ 分離部 ８ｄ 係合歯 ８ｅ 係合爪 ９ コアバンド ９ａ 磁心固定部 ９ｂ ボビン固定部 ９ｄ 係合歯 １０ コア固定具 １０ａ 開放端面 DESCRIPTION OF SYMBOLS 1 Closed-magnetic-path core 2 Protrusion part 3 Gear part 4 Winding bobbin 4a Groove part of winding bobbin 5 Winding 6 Lead wire 7 Metal terminal 8 Core band 8a Magnetic core fixing part 8b Bobbin fixing part 8c Separating part 8d Engagement tooth 8e Dowel 9 core band 9a magnetic core fixing part 9b bobbin fixing part 9d engaging tooth 10 core fixing tool 10a open end face
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井上 俊八 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 実開 昭58−15315（ＪＰ，Ｕ) 実開 昭56−81515（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shunpachi Inoue 1006 Kazuma Kazuma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd. (56) References Japanese Utility Model Sho 58-15315 (JP, U) Japanese Utility Model Sho 56 −81515 (JP, U)
Claims (2)
るいは一体形日の字状閉磁路磁心の中央磁脚上に装着さ
れ、両端の鍔部に突起部を設けた２分割巻線ボビンに一
対の巻線を施し、前記閉磁路磁心と巻線ボビンの中央部
に設けられた歯車部を複数の係合歯を有したコアバンド
で固定してなるラインフィルタ。1. A two-part structure which is mounted on one magnetic leg of an integrated mouth-shaped closed magnetic circuit core or on a central magnetic leg of an integrated one-shaped closed magnetic circuit core and provided with protrusions at both end flanges. A line filter in which a pair of windings are applied to a winding bobbin, and the closed magnetic path core and a gear portion provided at the center of the winding bobbin are fixed by a core band having a plurality of engaging teeth.
るいは一体形日の字状閉磁路磁心の中央磁脚上に装着さ
れ、両端の鍔部に突起部及び両端の鍔部の外側側面に複
数の溝部を設けた２分割巻線ボビンに一対の巻線を施
し、前記閉磁路磁心と巻線ボビンの両端の鍔部の外側側
面の複数の溝部にコア保持具を挿入し固定してなるライ
ンフィルタ。2. A projection formed on both ends of a flange of both ends mounted on one magnetic leg of an integrated mouth-shaped closed magnetic path core or on a center magnetic leg of an integrated day-shaped closed magnetic path magnetic core. A pair of windings are applied to a two-part winding bobbin provided with a plurality of grooves on the outer side surface of the core, and a core holder is inserted into the plurality of grooves on the outer side surface of the flange at both ends of the closed magnetic path core and the winding bobbin. Fixed line filter.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6004468A JP2715894B2 (en) | 1994-01-20 | 1994-01-20 | Line filter |
| EP94103688A EP0615260B1 (en) | 1993-03-12 | 1994-03-10 | Line filter |
| DE69429551T DE69429551T2 (en) | 1993-03-12 | 1994-03-10 | Line filter |
| CN94102722A CN1078383C (en) | 1993-03-12 | 1994-03-12 | Circuit wave filter |
| US08/711,709 US5635891A (en) | 1993-03-12 | 1996-08-30 | Line filter |
| US08/819,180 US5745021A (en) | 1993-03-12 | 1997-03-17 | Line filter |
| CN01116928A CN1348193A (en) | 1993-03-12 | 2001-05-15 | Circuit filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6004468A JP2715894B2 (en) | 1994-01-20 | 1994-01-20 | Line filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07211547A JPH07211547A (en) | 1995-08-11 |
| JP2715894B2 true JP2715894B2 (en) | 1998-02-18 |
Family
ID=11584966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6004468A Expired - Fee Related JP2715894B2 (en) | 1993-03-12 | 1994-01-20 | Line filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2715894B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6885100B2 (en) * | 2017-02-23 | 2021-06-09 | スミダコーポレーション株式会社 | Filter parts assembly kit, filter parts, and manufacturing method of filter parts |
| KR102250787B1 (en) * | 2019-09-06 | 2021-05-18 | 주식회사 케미 | Emi filter |
-
1994
- 1994-01-20 JP JP6004468A patent/JP2715894B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07211547A (en) | 1995-08-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |