JPH01289228A - Noise filter - Google Patents
Noise filterInfo
- Publication number
- JPH01289228A JPH01289228A JP11952088A JP11952088A JPH01289228A JP H01289228 A JPH01289228 A JP H01289228A JP 11952088 A JP11952088 A JP 11952088A JP 11952088 A JP11952088 A JP 11952088A JP H01289228 A JPH01289228 A JP H01289228A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic metal
- metal foils
- toroidal core
- toroidal
- winding
- 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
Links
- 239000002184 metal Substances 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000011888 foil Substances 0.000 claims abstract description 28
- 238000004804 winding Methods 0.000 claims abstract description 11
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 3
- 239000005300 metallic glass Substances 0.000 abstract description 3
- 239000012212 insulator Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000000470 constituent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電源線路や信号線路に挿入してノイズの侵入
及び漏洩を防止するノイズフィルタに関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a noise filter that is inserted into a power line or a signal line to prevent noise from entering or leaking.
従来の技術
従来の一般的なノイズフィルタの回路図を第３図に示す
。１はフェライトコア、または非晶質金属等からなるコ
アに往復電流による磁束が相殺されるようにコアに一対
の巻線を施したコモンモードチョークコイルであり、２
．３はライン、アース間に接続されたコモンモードノイ
ズ低減用コンデンサであり、４はライン間に接続された
ノーマルモードノイズ低減用のコンデンサである。従来
のノイズフィルタは、これらの部品をプリント基板上、
あるいは直接各部品のリード線を接続することによりフ
ィルタ回路を構成していた０発明が解決しようとする課
題
上述の従来の構成では、構成部品が多く、しかも、配線
１組立て工程も複雑になり、コスト面で著しく不利とな
り、大形化する。さらに、各種コンデンサ２〜４の接続
に要するリード線、プリント基板銅箔部が長く必要とな
りコンデンサと直列にインダクタンス成分が増加し、高
周波領域におけるノイズ防止効果が低減する。BACKGROUND ART A circuit diagram of a conventional general noise filter is shown in FIG. 1 is a common mode choke coil in which a pair of windings are applied to a core made of a ferrite core or an amorphous metal so that the magnetic flux caused by the reciprocating current is canceled;
．． 3 is a common mode noise reduction capacitor connected between the line and the ground, and 4 is a normal mode noise reduction capacitor connected between the lines. Conventional noise filters have these components mounted on a printed circuit board.
Alternatively, the filter circuit was configured by directly connecting the lead wires of each component. Problems to be Solved by the Invention The conventional configuration described above has many components, and the wiring 1 assembly process is also complicated. It becomes significantly disadvantageous in terms of cost and becomes larger. Furthermore, the lead wires and copper foil portions of the printed circuit boards required to connect the various capacitors 2 to 4 are long, and the inductance component in series with the capacitors increases, reducing the noise prevention effect in the high frequency range.
本発明は、上記課題の対策として、構成部品点数を減ら
し、生産性の良い小形、低コストで高性能なノイズフィ
ルタを提供するものである。As a solution to the above problems, the present invention provides a small, low-cost, high-performance noise filter that reduces the number of component parts and has good productivity.
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、複数の磁性金属箔
間に誘電体層を介してリング状に巻回してトロイダルコ
アを構成し、各金属箔からリード線を引き出しコンデン
サを形成しさらに、トロイダルコアにトロイダル巻線を
施すことによりコイルを形成し、これらを接続し、ノイ
ズフィルタを構成したものである。Means for Solving the Problems In order to solve the above problems, the present invention forms a toroidal core by winding a plurality of magnetic metal foils in a ring shape with a dielectric layer interposed between them, and connects lead wires from each metal foil. A lead-out capacitor is formed, a coil is formed by applying a toroidal winding to the toroidal core, and these are connected to form a noise filter.
−作用
上述のように、複数の磁性金属箔間に誘電体層を介して
巻回しトロイダルコアを形成することによって、磁性金
属箔が電極となり、磁性金属箔間に戸ンデンサ素子を形
成することができ、トロイダルコア内部に１個または複
数のコンデンサ素子を構成することが可能となる０さら
に、トロイダルコアにトロイダル巻線を施すことにより
コイル素子が形成できる。このことにより、ノイズフィ
ルタの構成部品点数を削減し、さらに、トロイダルコア
内の磁性金属箔からリード線を引き出し、コイルリード
、アース端子等必要な結線を最短距離で行えるため、配
線９組立ても簡単になり、リード線によるコンデンサと
直列にはいるインダクタンス成分も低減でき、高周波領
域におけるノイズ防止効果が改善できる。以上の理由に
よりノイズフィルタの小形化、低コスト化、高性能化が
可能となる。- Effect As described above, by forming a toroidal core by winding a plurality of magnetic metal foils with dielectric layers interposed between them, the magnetic metal foils become electrodes, and a capacitor element can be formed between the magnetic metal foils. Furthermore, a coil element can be formed by applying toroidal winding to the toroidal core. This reduces the number of components of the noise filter, and also makes it easy to assemble the wiring 9 because the lead wires can be pulled out from the magnetic metal foil inside the toroidal core and necessary connections such as coil leads and ground terminals can be made in the shortest possible distance. Therefore, the inductance component introduced in series with the capacitor due to the lead wire can be reduced, and the noise prevention effect in the high frequency range can be improved. For the above reasons, the noise filter can be made smaller, lower in cost, and higher in performance.
実施例
以下、本発明の一実施例について図面を参照して説明す
る。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図、第２図は、本発明の一実施例におけるノイズフ
ィルタの展開図、構造図である。非晶質金属等からなる
３枚の磁性金属箔５，６．７をポリエステル、ポリプロ
ピレンなど誘電率の高いしかも磁性金属箔より幅の広い
絶縁体からなる誘電体層８，９．１０を介してリング状
に巻回し、トロイダルコア１１を形成する。３枚の磁性
金属箔６〜７からは、リード線１２，１３．１４を引出
し、中間に位置する磁性金属箔６をアース層、引き出さ
れたリード線１３をアース端子とする。次に、トロイダ
ルコア１１に第２図に示すように銅線１６を往復電流に
よる磁束が相殺される向きに一対のトロイダル状に巻線
し、同一方向の一対の巻線端子１６．１７と磁性金属箔
からの端子１２゜１４を接続することによりノイズフィ
ルタを構成したものである。FIGS. 1 and 2 are developed and structural diagrams of a noise filter in an embodiment of the present invention. Three magnetic metal foils 5, 6.7 made of amorphous metal etc. are interposed through dielectric layers 8, 9.10 made of an insulator such as polyester or polypropylene which has a high dielectric constant and is wider than the magnetic metal foil. It is wound into a ring shape to form a toroidal core 11. Lead wires 12, 13, and 14 are drawn out from the three magnetic metal foils 6 to 7, and the magnetic metal foil 6 located in the middle is used as a ground layer, and the drawn out lead wire 13 is used as a ground terminal. Next, as shown in FIG. 2, copper wires 16 are wound around the toroidal core 11 in a pair of toroidal shapes in a direction in which the magnetic flux due to the reciprocating current cancels out, and a pair of winding terminals 16 and 17 in the same direction are connected to each other. A noise filter is constructed by connecting terminals 12 and 14 made of metal foil.
つまり、磁性金属箔５，７と磁性金属箔６との間、また
磁性金属箔５と７間でコンデンサを形成し、この巻回さ
れた磁性金属箔６〜７をコアとするトロイダル巻線でコ
イルを形成し、結線することにより第３図に示すような
回路構成とすることができる。In other words, a capacitor is formed between the magnetic metal foils 5 and 7 and the magnetic metal foil 6, and between the magnetic metal foils 5 and 7, and a toroidal winding with the wound magnetic metal foils 6 to 7 as a core is used. By forming coils and connecting them, a circuit configuration as shown in FIG. 3 can be obtained.
また、磁性金属箔６〜７の導電性が悪い場合は、磁性金
属箔６〜７の表面に良導電体金属をメッキすることによ
り、ライン間、ラインーアース間のインピーダンスが低
減でき、ノイズ減衰特性が改善できる。In addition, if the conductivity of the magnetic metal foils 6 to 7 is poor, plating the surfaces of the magnetic metal foils 6 to 7 with a good conductor metal can reduce the impedance between lines and between lines and ground, and improve noise attenuation characteristics. It can be improved.
発明の効果
以上のような本発明は、複数の磁性金属箔間に誘電体層
を介して巻回したトロイダルコア内部にコンデンサを形
成し、トロイダルコア外周にコイルを形成してノイズフ
ィルタを構成するため、部品点数を極力減らせると共に
、小形化が可能となり、さらに、配線１組立ても簡単で
コスト面でも大幅な低減化が図れる。また、各種コンデ
ンサの接続に要するリード線の長さも、最短距離で配線
可能となり、高周波領域におけるノイズ低減効果が良化
する。以上のように数多くの利点を有し、工業的価値の
大なるものである。Effects of the Invention The present invention as described above forms a noise filter by forming a capacitor inside a toroidal core wound between a plurality of magnetic metal foils with a dielectric layer interposed therebetween, and forming a coil around the outer periphery of the toroidal core. Therefore, the number of parts can be reduced as much as possible, the size can be made smaller, and furthermore, the assembly of one wiring is simple, and the cost can be significantly reduced. Moreover, the length of the lead wires required to connect various capacitors can be wired at the shortest distance, and the noise reduction effect in the high frequency region is improved. As mentioned above, it has many advantages and is of great industrial value.
第１図は本発明の一実施例におけるノイズフィルタの展
開斜視図、第２図は実施例におけるノイズフィルタを示
す斜視図、第３図はノイズフィルタの電気回路図である
。
５．６．７・・・・・・磁性金属箔、８，９．１０・・
・・・・誘電体層、１１・・・・・・トロイダルコア、
１２ 、１３゜１４・・・・・・リード線、１５・川・
・銅線、１６．１７・・・・・・コイルリード端子。FIG. 1 is an exploded perspective view of a noise filter according to an embodiment of the present invention, FIG. 2 is a perspective view showing the noise filter according to the embodiment, and FIG. 3 is an electric circuit diagram of the noise filter. 5.6.7...Magnetic metal foil, 8,9.10...
...Dielectric layer, 11...Troidal core,
12, 13゜14・・・Lead wire, 15・River・
・Copper wire, 16.17... Coil lead terminal.
Claims (2)
に巻回してトロイダルコアを構成するとともに、各金属
箔からリード線を引き出し、このトロイダルコアにトロ
イダル巻線を施して構成したノイズフィルタ。(1) A toroidal core was constructed by winding a plurality of magnetic metal foils in a ring shape with a dielectric layer interposed between them, and a lead wire was drawn out from each metal foil, and toroidal winding was applied to this toroidal core. Noise filter.
求項１記載のノイズフィルタ。(2) The noise filter according to claim 1, wherein the surface of the magnetic metal foil is plated with a good conductor metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11952088A JPH01289228A (en) | 1988-05-17 | 1988-05-17 | Noise filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11952088A JPH01289228A (en) | 1988-05-17 | 1988-05-17 | Noise filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01289228A true JPH01289228A (en) | 1989-11-21 |
Family
ID=14763309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11952088A Pending JPH01289228A (en) | 1988-05-17 | 1988-05-17 | Noise filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01289228A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200341465Y1 (en) * | 2003-11-24 | 2004-02-11 | 한국전기연구원 | The wideband multi-tap transformer for impedance matching |
| WO2004069536A1 (en) * | 2003-01-30 | 2004-08-19 | Metglas, Inc. | Magnetic implement using magnetic metal ribbon coated with insulator |
| JP2009225652A (en) * | 2007-06-08 | 2009-10-01 | Nissan Motor Co Ltd | Motor and motor system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58216411A (en) * | 1982-06-10 | 1983-12-16 | Matsushita Electric Ind Co Ltd | Built-in capacitor type electromagnetic apparatus |
-
1988
- 1988-05-17 JP JP11952088A patent/JPH01289228A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58216411A (en) * | 1982-06-10 | 1983-12-16 | Matsushita Electric Ind Co Ltd | Built-in capacitor type electromagnetic apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004069536A1 (en) * | 2003-01-30 | 2004-08-19 | Metglas, Inc. | Magnetic implement using magnetic metal ribbon coated with insulator |
| US7056595B2 (en) * | 2003-01-30 | 2006-06-06 | Metglas, Inc. | Magnetic implement using magnetic metal ribbon coated with insulator |
| US7138188B2 (en) | 2003-01-30 | 2006-11-21 | Metglas, Inc. | Magnetic implement using magnetic metal ribbon coated with insulator |
| KR200341465Y1 (en) * | 2003-11-24 | 2004-02-11 | 한국전기연구원 | The wideband multi-tap transformer for impedance matching |
| JP2009225652A (en) * | 2007-06-08 | 2009-10-01 | Nissan Motor Co Ltd | Motor and motor system |
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