JPH08316067A - Choke coil - Google Patents
Choke coilInfo
- Publication number
- JPH08316067A JPH08316067A JP12227295A JP12227295A JPH08316067A JP H08316067 A JPH08316067 A JP H08316067A JP 12227295 A JP12227295 A JP 12227295A JP 12227295 A JP12227295 A JP 12227295A JP H08316067 A JPH08316067 A JP H08316067A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- terminal
- choke coil
- conductive pattern
- terminal circuits
- 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.)
- Withdrawn
Links
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電源装置のノイズフィ
ルタ用チョークコイルなどに好適な表面実装用のチョー
クコイルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface mounting choke coil suitable for a noise filter choke coil of a power supply device.
【０００２】[0002]
【従来の技術】一般に、この種のチョークコイルは、例
えば特開昭６４−３０４６３号公報などに開示されるよ
うに、導電性の金属線すなわちマグネットワイヤーを絶
縁性ボビンに巻回し、この一体化されたボビンをＥＥ型
あるいはＥＩ型コアの脚部に挿入する構造となってい
る。2. Description of the Related Art Generally, a choke coil of this type is constructed by winding a conductive metal wire, that is, a magnet wire around an insulating bobbin, as disclosed in, for example, Japanese Patent Laid-Open No. 64-30463. The bobbin thus formed is inserted into the leg portion of the EE type or EI type core.
【０００３】[0003]
【発明が解決しようとする課題】上記構成では、印加電
流に応じてチョークコイルのインダクタンスを変えよう
とする場合、マグネットワイヤーの線径を変え、巻線仕
様の違うチョークコイルを複数種用意して、異なる電流
容量に対応しなければならないという煩わしい問題点を
有していた。また、マグネットワイヤーをボビンに巻回
する構造のチョークコイルでは、ボビンにより部品の薄
型化を図ることが難しいという問題点もある。In the above structure, when the inductance of the choke coil is to be changed according to the applied current, the wire diameter of the magnet wire is changed and a plurality of choke coils having different winding specifications are prepared. However, it has a troublesome problem of having to deal with different current capacities. Further, in the choke coil having a structure in which the magnet wire is wound around the bobbin, there is a problem that it is difficult to reduce the thickness of parts by the bobbin.
【０００４】本発明は上記問題点に鑑みなされたもので
あり、その目的とは、単一の部品構成でありながら、電
流容量に応じたインダクタンス値を得ることができ、し
かも部品自体の薄型化を図ることができるチョークコイ
ルを提供することにある。The present invention has been made in view of the above problems, and an object thereof is to obtain an inductance value according to a current capacity while having a single component structure, and further reduce the thickness of the component itself. It is to provide a choke coil capable of achieving the above.
【０００５】[0005]
【課題を解決するための手段】本発明のチョークコイル
は、上記の目的を達成するために、一側に第１の導電パ
ターン部を平面的なコイル状に形成し、他側に第２の導
電パターン部を平面的なコイル状に形成した絶縁薄層基
板を複数積層して、前記第１の導電パターン部により複
数の二端子回路からなる第１のコイル部を形成するとと
もに、前記第２の導電パターン部により複数の二端子回
路からなる第２のコイル部を形成し、前記第１のコイル
部および第２のコイル部に共通するコアを設け、前記第
１のコイル部および第２のコイル部の各二端子回路の両
端に、該第１のコイル部および第２のコイル部の各二端
子回路を直列接続あるいは並列接続する接続端子を接続
して構成される。In order to achieve the above object, the choke coil of the present invention has a first conductive pattern portion formed on one side in a planar coil shape and a second conductive pattern portion on the other side. A plurality of insulating thin-layer substrates each having a conductive pattern portion formed in a planar coil shape are laminated to form a first coil portion including a plurality of two-terminal circuits by the first conductive pattern portion, and at the same time, the second Forming a second coil portion composed of a plurality of two-terminal circuits with a conductive pattern portion, and providing a core common to the first coil portion and the second coil portion, and the first coil portion and the second coil portion. Connection terminals for connecting the two-terminal circuits of the first coil section and the second coil section in series or in parallel are connected to both ends of each two-terminal circuit of the coil section.
【０００６】[0006]
【作用】上記構成により、第１のコイル部を構成する二
端子回路と、第２のコイル部を構成する二端子回路と
を、これらの二端子回路の両端に接続された接続端子を
利用して、各々直列接続あるいは並列接続することがで
きる。このため、同一のチョークコイルでありながら、
電流容量に応じたインダクタンス値が得られる。また、
第１および第２のコイル部は、いずれも、第１および第
２の導電パターン部を形成した絶縁薄層基板を積層して
得られたものなので、従来構造に比べて、部品の薄型化
を図ることができる。With the above structure, the two-terminal circuit forming the first coil portion and the two-terminal circuit forming the second coil portion are connected to each other by using the connection terminals connected to both ends of these two-terminal circuits. And can be connected in series or in parallel. Therefore, despite the same choke coil,
An inductance value corresponding to the current capacity can be obtained. Also,
Since the first and second coil portions are both obtained by laminating the insulating thin-layer substrates on which the first and second conductive pattern portions are formed, the components can be made thinner than the conventional structure. Can be planned.
【０００７】[0007]
【実施例】以下、図１乃至図３に基づき、本発明の一実
施例を詳述する。先ず、本実施例におけるチョークコイ
ル11の全体構成を図１および図２に基づき説明する。同
図において、12はコ字型の磁性部材13，14を突き合わせ
てなる全体形状がロ字型のコアである。このコア12に
は、各々側脚15，16が設けられている。また、21は複数
の絶縁薄層基板22を複数枚積層して得られたコイル積層
体である。このコイル積層体21は、共通のコア12の側脚
15，16に対応して、各々開口部23，24が形成される。各
絶縁薄層基板22には、絶縁体（図示せず）の表面または
表裏面に、第１および第２の導電パターン部25，26が、
例えば銅箔をエッチング処理するなどして、各々平面的
なコイル状に形成される。第１の導電パターン部25は、
絶縁薄層基板22の一側、すなわち、側脚15が挿通する開
口部23の周辺に形成され、第２の導電パターン部26は、
絶縁薄層基板22の他側、すなわち、側脚16が挿通する開
口部24の周辺に形成される。これらの第１および第２の
導電パターン部25，26は、各端部に形成されためっきス
ルーホール27，28により、隣り合う絶縁薄層基板22に形
成された第１および第２の導電パターン部25，26と電気
的な接続を行なうようにしている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. First, the overall configuration of the choke coil 11 in this embodiment will be described with reference to FIGS. 1 and 2. In the figure, reference numeral 12 is a U-shaped core formed by abutting U-shaped magnetic members 13 and 14 together. The core 12 is provided with side legs 15 and 16, respectively. Reference numeral 21 is a coil laminated body obtained by laminating a plurality of insulating thin layer substrates 22. This coil laminate 21 is a side leg of the common core 12.
Openings 23 and 24 are formed corresponding to 15 and 16, respectively. Each insulating thin-layer substrate 22 has first and second conductive pattern portions 25, 26 on the front surface or front and back surfaces of an insulator (not shown).
For example, the copper foil is subjected to an etching treatment or the like to be formed into a planar coil shape. The first conductive pattern portion 25 is
The second conductive pattern portion 26 is formed on one side of the insulating thin layer substrate 22, that is, around the opening 23 through which the side leg 15 is inserted.
It is formed on the other side of the insulating thin layer substrate 22, that is, around the opening 24 through which the side leg 16 is inserted. The first and second conductive pattern portions 25 and 26 are formed on adjacent insulating thin layer substrates 22 by the plated through holes 27 and 28 formed at the respective end portions. The parts 25 and 26 are electrically connected.
【０００８】前記第１および第２の導電パターン部25，
26は、コイル積層体21の内部において、各々２以上の複
数の二端子回路を有している。本実施例では、各絶縁薄
層基板22に形成された第１の導電パターン部25をめっき
スルーホール27で相互に接続することで、２つの二端子
回路31，32を形成し、第２の導電パターン部26をめっき
スルーホール28で相互に接続することで、同じく２つの
二端子回路33，34を形成している。そして、同一の側脚
15の周囲に配置された二端子回路31，32により、第１の
コイル部35が形成され、側脚16の周囲に配置された二端
子回路33，34により、第２のコイル部36が形成される。The first and second conductive pattern portions 25,
26 has a plurality of two-terminal circuits each of which is two or more inside the coil laminate 21. In this embodiment, the first conductive pattern portions 25 formed on each insulating thin layer substrate 22 are connected to each other by the plated through holes 27 to form two two-terminal circuits 31 and 32, and the second two-terminal circuits 31 and 32 are formed. By connecting the conductive pattern portions 26 to each other through the plated through holes 28, two two-terminal circuits 33 and 34 are similarly formed. And the same side leg
A first coil portion 35 is formed by the two-terminal circuits 31 and 32 arranged around 15 and a second coil portion 36 is formed by the two-terminal circuits 33 and 34 arranged around the side leg 16. To be done.
【０００９】前記二端子回路31，32および二端子回路3
3，34は、いずれも同一の絶縁薄層基板22上に形成され
ている。すなわち、各絶縁薄層基板22上において、二端
子回路31の巻回空隙に別の二端子回路32が形成され、二
端子回路33の巻回空隙に別の二端子回路34が形成されて
いる。これに対して、複数の絶縁薄層基板22を２組に分
け、一方の組の絶縁薄層基板22に二端子回路31，33をの
みを形成し、他方の組の絶縁薄層基板22に二端子回路3
2，34をのみを形成して、これらを積層してもよい。こ
の場合、コイル積層体21の形状は多少厚くなるものの、
第１および第２の導電パターン部25，26を本実施例より
も幅広く形成することができ、より大電流に対応でき
る。The two-terminal circuits 31, 32 and the two-terminal circuit 3
Both 3 and 34 are formed on the same insulating thin layer substrate 22. That is, on each insulating thin layer substrate 22, another two-terminal circuit 32 is formed in the winding gap of the two-terminal circuit 31, and another two-terminal circuit 34 is formed in the winding gap of the two-terminal circuit 33. . On the other hand, the plurality of insulating thin layer substrates 22 are divided into two sets, only two terminal circuits 31 and 33 are formed in one set of insulating thin layer substrates 22, and the other set of insulating thin layer substrates 22 is formed. Two terminal circuit 3
You may form only 2 and 34 and may laminate these. In this case, although the shape of the coil laminated body 21 becomes slightly thicker,
The first and second conductive pattern portions 25 and 26 can be formed wider than in the present embodiment, and a larger current can be accommodated.
【００１０】前記二端子回路31〜34の両端には、各々半
田付け可能な接続端子１〜８が各々接続される。すなわ
ち、二端子回路31の両端には接続端子１，５が設けら
れ、以下、二端子回路32の両端には接続端子２，６、二
端子回路33の両端には接続端子３，７、二端子回路34の
両端には接続端子４，８が各々設けられている。また、
一方の二端子回路31，32に流れ込む電流より、一方の側
脚15から他方の側脚16を経て一方の側脚15に至る第１の
閉磁気回路37が形成されるとともに、他方の二端子回路
33，34に流れ込む電流より、他方の側脚16から一方の側
脚15を経て他方の側脚16に至る第２の閉磁気回路38が形
成される。これらの第１および第２の閉磁気回路37，38
は、図２からも明らかなように、コア12の同一の部分に
形成されている。Solderable connection terminals 1 to 8 are connected to both ends of the two-terminal circuits 31 to 34, respectively. That is, the connection terminals 1 and 5 are provided at both ends of the two-terminal circuit 31, and hereinafter, the connection terminals 2 and 6 are provided at both ends of the two-terminal circuit 32, and the connection terminals 3, 7 and two are provided at both ends of the two-terminal circuit 33. Connection terminals 4 and 8 are provided at both ends of the terminal circuit 34, respectively. Also,
The current flowing into one of the two-terminal circuits 31 and 32 forms a first closed magnetic circuit 37 from one side leg 15 to the other side leg 16 to the one side leg 15, and the other two terminals circuit
A second closed magnetic circuit 38 extending from the other side leg 16 through the one side leg 15 to the other side leg 16 is formed by the current flowing into the 33, 34. These first and second closed magnetic circuits 37, 38
Are formed in the same portion of the core 12, as is clear from FIG.
【００１１】本実施例におけるチョークコイル11は、一
方の二端子回路31，32に電流を流し込むと、第１の閉磁
気回路37に磁束φ１が発生する。また、他方の二端子回
路33，34に電流を流し込むと、第２の閉磁気回路38に磁
束φ２が発生する。例えば、向かい合う側脚15，16に各
々巻装された第１のコイル部35の二端子回路31と、第２
のコイル部36の二端子回路34とに着目すると、第１およ
び第２の閉磁気回路37，38に各々発生する磁束φ１，φ
２の向きは、各二端子回路31，34を流れる電流の向きに
応じて、同方向にも逆方向にもなる。すなわち、各磁束
φ１，φ２は重畳しあうか、あるいは、打消しあうかの
いずれか一方になるが、この二端子回路31，34とコア12
との磁気的結合を等価的に示せば、図３の回路図に示す
ように、同方向にドットを記した第１のチョークコイル
部39が形成されることになる。また、同様に、二端子回
路32，33とコア12との磁気的結合により、同方向にドッ
トを記した第２のチョークコイル40が形成される。In the choke coil 11 of this embodiment, when a current is applied to one of the two terminal circuits 31 and 32, a magnetic flux φ1 is generated in the first closed magnetic circuit 37. When a current is applied to the other two-terminal circuit 33, 34, a magnetic flux φ2 is generated in the second closed magnetic circuit 38. For example, the two-terminal circuit 31 of the first coil portion 35 wound around the facing side legs 15 and 16 and the second
Paying attention to the two-terminal circuit 34 of the coil section 36, the magnetic fluxes φ1 and φ generated in the first and second closed magnetic circuits 37 and 38, respectively.
The direction of 2 can be the same direction or the opposite direction depending on the direction of the current flowing through each two-terminal circuit 31, 34. That is, the magnetic fluxes φ1 and φ2 either overlap each other or cancel each other, but the two-terminal circuits 31, 34 and the core 12
Equivalently showing the magnetic coupling with, the first choke coil portion 39 having dots in the same direction is formed as shown in the circuit diagram of FIG. Similarly, by magnetically coupling the two-terminal circuits 32 and 33 and the core 12, the second choke coil 40 having dots formed in the same direction is formed.
【００１２】次に、本実施例におけるチョークコイル11
を用いた具体的な回路例を図３に基づき説明する。同図
において、41は商用電源、42はチョークコイル11を組み
込んだノイズフィルタユニットであり、このノイズフィ
ルタユニット42は、交流入力電圧すなわち出力電圧Ｖｏ
で駆動する電子機器に相当する電源装置43の前段に設け
られる。この電源装置43は、図示しないが、内部にスイ
ッチング素子を含む電力変換回路などを備えている。Next, the choke coil 11 according to the present embodiment.
A specific circuit example using is described with reference to FIG. In the figure, 41 is a commercial power source, 42 is a noise filter unit incorporating the choke coil 11, and this noise filter unit 42 is an AC input voltage, that is, an output voltage Vo.
It is provided in the front stage of the power supply device 43 corresponding to the electronic device driven by. Although not shown, the power supply device 43 includes a power conversion circuit including a switching element therein and the like.
【００１３】ノイズフィルタユニット42には、商用電源
41からの交流入力電圧Ｖｉが印加される入力端子44，45
が設けられ、この入力端子44，45にチョークコイル11の
接続端子１，３が各々接続される。また、チョークコイ
ル11の接続端子６，８が、ノイズフィルタユニット42の
出力端子46，47に各々接続され、この出力端子46，47を
介して出力電圧Ｖｏを電源装置43に供給するようになっ
ている。本実施例では、第１および第２のチョークコイ
ル部39，40を、非対称波成分のノイズを除去するコモン
モードチョークコイル部として用いている。The noise filter unit 42 includes a commercial power source.
Input terminals 44, 45 to which the AC input voltage Vi from 41 is applied
Are provided, and the connection terminals 1 and 3 of the choke coil 11 are connected to the input terminals 44 and 45, respectively. Further, the connection terminals 6 and 8 of the choke coil 11 are respectively connected to the output terminals 46 and 47 of the noise filter unit 42, and the output voltage Vo is supplied to the power supply device 43 via the output terminals 46 and 47. ing. In this embodiment, the first and second choke coil portions 39 and 40 are used as a common mode choke coil portion that removes noise of an asymmetrical wave component.
【００１４】本実施例のチョークコイル11は、前記接続
端子１〜８間を適宜接続することにより、第１のコイル
部35の二端子回路31，32を直列接続あるいは並列接続に
切換えることができるとともに、第２のコイル部36の二
端子回路33，34も直列接続あるいは並列接続に切換える
ことができる。具体的には、接続端子１，２間、接続端
子３，４間、接続端子５，６間、接続端子７，８間を各
々短絡すれば、一方の二端子回路31，32、および他方の
二端子回路33，34が各々並列に接続され、チョークコイ
ル11を構成する第１および第２のチョークコイル部39，
40が並列接続される。また、接続端子２，５間、および
接続端子４，７間を各々短絡すれば、一方の二端子回路
31，32、および他方の二端子回路33，34が各々直列に接
続され、第１および第２のチョークコイル部39，40が直
列接続される。このような接続端子１〜８間の接続手段
は、例えば、チョークコイル11を実装するプリント印刷
基板の回路パターンや、あるいは、特定の接続端子１〜
８間を接続するプラグなどを用いることができる。In the choke coil 11 of this embodiment, the two terminal circuits 31 and 32 of the first coil portion 35 can be switched to series connection or parallel connection by appropriately connecting the connection terminals 1 to 8. At the same time, the two-terminal circuits 33 and 34 of the second coil section 36 can be switched to series connection or parallel connection. Specifically, by short-circuiting the connection terminals 1 and 2, the connection terminals 3 and 4, the connection terminals 5 and 6, and the connection terminals 7 and 8, respectively, one two-terminal circuit 31, 32 and the other two-terminal circuit 31, 32 Two terminal circuits 33 and 34 are connected in parallel, respectively, and first and second choke coil parts 39, which constitute the choke coil 11,
40 are connected in parallel. Also, by short-circuiting between the connection terminals 2 and 5 and between the connection terminals 4 and 7, one of the two-terminal circuits
31, 32 and the other two-terminal circuits 33, 34 are connected in series, respectively, and the first and second choke coil parts 39, 40 are connected in series. Such connecting means between the connecting terminals 1 to 8 may be, for example, a circuit pattern of a printed circuit board on which the choke coil 11 is mounted, or specific connecting terminals 1 to 8.
A plug or the like for connecting the eight can be used.
【００１５】次に、上記構成につきその作用を説明す
る。先ず、入力電圧Ｖｉが例えばＡＣ１００Ｖ程度の低
電圧の場合、接続端子１，２間、接続端子３，４間、接
続端子５，６間、接続端子７，８間を各々短絡して、第
１および第２のチョークコイル部39，40を、交流電源41
から入力端子44，45を経て電源装置43に至る電源ライン
に対し並列に接続する。このとき、各電源ラインとアー
ス間に発生する非対称波成分のノイズは、第１および第
２のチョークコイル部39，40に分岐しつつ、この第１お
よび第２のチョークコイル部39，40により除去される。Next, the operation of the above configuration will be described. First, when the input voltage Vi is a low voltage of, for example, about 100 V AC, the connection terminals 1 and 2, the connection terminals 3 and 4, the connection terminals 5 and 6, and the connection terminals 7 and 8 are short-circuited, respectively. The second choke coil parts 39 and 40 are connected to the AC power supply 41.
To the power supply device 43 through the input terminals 44 and 45. At this time, the noise of the asymmetrical wave component generated between each power supply line and the ground is branched by the first and second choke coil portions 39, 40 while branching to the first and second choke coil portions 39, 40. To be removed.
【００１６】これに対して、入力電圧Ｖｉが例えばＡＣ
２００Ｖ程度の高電圧の場合には、接続端子２，５間、
および接続端子４，７間を各々短絡して、第１および第
２のチョークコイル部39，40を電源ラインに対し直列に
接続する。このとき、各電源ラインとアース間に発生す
る非対称波成分のノイズは、第１および第２のチョーク
コイル部39，40を順に通過しつつ、この第１および第２
のチョークコイル部39，40により除去される。On the other hand, the input voltage Vi is, for example, AC.
In the case of a high voltage of about 200V, between the connection terminals 2 and 5,
The connection terminals 4 and 7 are short-circuited to connect the first and second choke coil parts 39 and 40 in series to the power supply line. At this time, the noise of the asymmetrical wave component generated between each power supply line and the earth passes through the first and second choke coil parts 39 and 40 in order, and the first and second noise is generated.
It is removed by the choke coil parts 39, 40 of.
【００１７】この場合、理論的には、チョークコイルの
インダクタンスは巻線の巻数の二乗に比例することか
ら、仮に二端子回路31〜34が各々同一の巻数Ｎになるよ
うに第１および第２のコイル部35，36を形成すれば、一
方の二端子回路31，32、および他方の二端子回路33，34
を各々並列に接続した場合には、チョークコイル11の実
質的なインダクタンスは、ある一つの二端子回路31の巻
数Ｎの二乗、つまり、Ｎ2に比例した値となる。これに
対して、一方の二端子回路31，32、および他方の二端子
回路33，34を各々直列に接続した場合、チョークコイル
11の実質的なインダクタンスは、いずれか一方の二端子
回路31，32の巻数（Ｎ＋Ｎ）の二乗、つまり、４Ｎ2に
比例した値となる。また、第１および第２のチョークコ
イル部39，40を並列接続している場合には、これらの第
１および第２のチョークコイル部39，40に対して電流が
分岐して流れ込むので、直列接続の場合に対して２倍の
電流容量を持つことができる。したがって、第１および
第２のチョークコイル部39，40を並列接続したときのチ
ョークコイル11のインダクタンス値がＬ（ｍＨ）、電流
容量がＩ（Ａ）である場合、第１および第２のチョーク
コイル部39，40を直列接続したときのチョークコイル11
のインダクタンス値は４倍（４Ｌ（ｍＨ））、電流容量
は半分（Ｉ／２（Ａ））になる。In this case, theoretically, the inductance of the choke coil is proportional to the square of the number of turns of the winding, so that the two terminal circuits 31 to 34 are supposed to have the same number of turns N, respectively. If the coil portions 35, 36 of the two are formed, one two-terminal circuit 31, 32 and the other two-terminal circuit 33, 34 are formed.
When each is connected in parallel, the substantial inductance of the choke coil 11 has a value proportional to the square of the number of turns N of one certain two-terminal circuit 31, that is, N 2 . On the other hand, when one of the two-terminal circuits 31, 32 and the other of the two-terminal circuits 33, 34 are respectively connected in series, the choke coil
The substantial inductance of 11 is a value proportional to the square of the number of turns (N + N) of one of the two-terminal circuits 31 and 32, that is, 4N 2 . Further, when the first and second choke coil parts 39 and 40 are connected in parallel, a current branches and flows into the first and second choke coil parts 39 and 40, so that they are connected in series. It can have twice the current capacity as in the case of connection. Therefore, when the inductance value of the choke coil 11 is L (mH) and the current capacity is I (A) when the first and second choke coil portions 39 and 40 are connected in parallel, the first and second chokes are formed. Choke coil 11 when coil parts 39 and 40 are connected in series
Has an inductance value of 4 times (4 L (mH)) and a current capacity of half (I / 2 (A)).
【００１８】このように、本実施例のチョークコイル11
は、第１のコイル部35を構成する二端子回路31，32と、
第２のコイル部36を構成する二端子回路33，34とを、こ
れらの二端子回路31〜34の両端に接続された接続端子１
〜８を利用して、各々直列接続あるいは並列接続するこ
とができるので、各二端子回路31〜34の巻数、つまり第
１および第２の導電パターン部25，26の形状や、絶縁薄
層基板22の積層数などを適宜選定することによって、同
一のチョークコイル11でありながら、電流容量に応じた
インダクタンス値を得ることができる。しかも、このチ
ョークコイル11の第１および第２のコイル部35，36は、
いずれも、第１および第２の導電パターン部25，26を形
成した絶縁薄層基板22を積層して得られたものなので、
従来のボビンにマグネットワイヤーを巻回する構造に比
べて、チョークコイル11の薄型化を図ることが可能とな
る。In this way, the choke coil 11 of this embodiment is
Is a two-terminal circuit 31, 32 forming the first coil portion 35,
The two terminal circuits 33 and 34 forming the second coil portion 36 and the connection terminal 1 connected to both ends of these two terminal circuits 31 to 34.
8 to 8 can be connected in series or in parallel, the number of turns of each two-terminal circuit 31 to 34, that is, the shape of the first and second conductive pattern portions 25 and 26, and the insulating thin layer substrate. By properly selecting the number of stacked layers of 22 and the like, it is possible to obtain the inductance value according to the current capacity even with the same choke coil 11. Moreover, the first and second coil portions 35, 36 of the choke coil 11 are
Both are obtained by laminating the insulating thin layer substrates 22 on which the first and second conductive pattern portions 25 and 26 are formed,
The choke coil 11 can be made thinner than the conventional structure in which a magnet wire is wound around a bobbin.
【００１９】本実施例では、第１および第２のコイル部
35，36に、各々２つの二端子回路31，32および二端子回
路33，34を設けているが、３以上の二端子回路を設ける
ことも勿論可能である。この場合、接続端子の接続を変
えることにより、本実施例と異なるインダクタンス値お
よび電流容量を得ることができる。In this embodiment, the first and second coil parts are
Two two-terminal circuits 31 and 32 and two two-terminal circuits 33 and 34 are provided in 35 and 36, respectively, but it is of course possible to provide three or more two-terminal circuits. In this case, the inductance value and current capacity different from those of the present embodiment can be obtained by changing the connection of the connection terminals.
【００２０】本発明は上記実施例に限定されるものでは
なく、本発明の要旨の範囲において種々の変形実施が可
能である。例えば、二端子回路の各巻数は、互いに同一
にする必要はない。すなわち、巻数は、電流容量に応じ
て最適なインダクタンス値が得られるように、適宜設定
すればよい。また、本発明のチョークコイルは、実施例
のようなモジュール電源を構成するノイズフィルタユニ
ットのみならず、電流容量に応じてインダクタンス値を
変えたいあらゆる電子機器に組み込むことが可能であ
る。The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the gist of the present invention. For example, the numbers of turns of the two-terminal circuit do not have to be the same. That is, the number of turns may be appropriately set so that an optimum inductance value can be obtained according to the current capacity. Further, the choke coil of the present invention can be incorporated not only in the noise filter unit that constitutes the module power supply as in the embodiment but also in any electronic device whose inductance value is desired to be changed according to the current capacity.
【００２１】[0021]
【発明の効果】本発明のチョークコイルは、一側に第１
の導電パターン部を平面的なコイル状に形成し、他側に
第２の導電パターン部を平面的なコイル状に形成した絶
縁薄層基板を複数積層して、前記第１の導電パターン部
により複数の二端子回路からなる第１のコイル部を形成
するとともに、前記第２の導電パターン部により複数の
二端子回路からなる第２のコイル部を形成し、前記第１
のコイル部および第２のコイル部に共通するコアを設
け、前記第１のコイル部および第２のコイル部の各二端
子回路の両端に、該第１のコイル部および第２のコイル
部の各二端子回路を直列接続あるいは並列接続する接続
端子を接続したものであり、単一の部品構成でありなが
ら、電流容量に応じたインダクタンス値を得ることがで
き、しかも部品自体の薄型化を図ることが可能となる。The choke coil of the present invention has a first side on one side.
Is formed into a planar coil shape, and a plurality of insulating thin-layer substrates each having a second conductive pattern section formed into a planar coil shape are laminated on the other side, and the first conductive pattern section is used. The first coil portion including a plurality of two-terminal circuits is formed, and the second coil portion including a plurality of two-terminal circuits is formed by the second conductive pattern portion.
A core common to the coil portion and the second coil portion is provided, and the first coil portion and the second coil portion are provided at both ends of each two-terminal circuit of the first coil portion and the second coil portion. The connection terminals connecting each two-terminal circuit in series or in parallel are connected, and it is possible to obtain the inductance value according to the current capacity even though it is a single component configuration, and further, to reduce the thickness of the component itself. It becomes possible.
【図１】本発明の第１実施例を示すチョークコイルの斜
視図である。FIG. 1 is a perspective view of a choke coil showing a first embodiment of the present invention.
【図２】同上正面図である。FIG. 2 is a front view of the same.
【図３】同上図１および図２のチョークコイルを利用し
た回路構成図である。FIG. 3 is a circuit configuration diagram using the choke coil of FIGS. 1 and 2 above.
１〜８ 接続端子 12 コア 25 第１の導電パターン部 26 第２の導電パターン部 31〜34 二端子回路 35 第１のコイル部 36 第２のコイル部 1 to 8 connection terminal 12 core 25 first conductive pattern portion 26 second conductive pattern portion 31 to 34 two-terminal circuit 35 first coil portion 36 second coil portion
Claims (1)
コイル状に形成し、他側に第２の導電パターン部を平面
的なコイル状に形成した絶縁薄層基板を複数積層して、
前記第１の導電パターン部により複数の二端子回路から
なる第１のコイル部を形成するとともに、前記第２の導
電パターン部により複数の二端子回路からなる第２のコ
イル部を形成し、前記第１のコイル部および第２のコイ
ル部に共通するコアを設け、前記第１のコイル部および
第２のコイル部の各二端子回路の両端に、該第１のコイ
ル部および第２のコイル部の各二端子回路を直列接続あ
るいは並列接続する接続端子を接続したことを特徴とす
るチョークコイル。1. A plurality of insulating thin-layer substrates, each having a first conductive pattern portion formed in a planar coil shape on one side and a second conductive pattern portion formed in a planar coil shape on the other side. hand,
The first conductive pattern portion forms a first coil portion including a plurality of two-terminal circuits, and the second conductive pattern portion forms a second coil portion including a plurality of two-terminal circuits, A core common to the first coil portion and the second coil portion is provided, and the first coil portion and the second coil are provided at both ends of each two-terminal circuit of the first coil portion and the second coil portion. A choke coil having connecting terminals for connecting each two-terminal circuit of the section in series or in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12227295A JPH08316067A (en) | 1995-05-22 | 1995-05-22 | Choke coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12227295A JPH08316067A (en) | 1995-05-22 | 1995-05-22 | Choke coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08316067A true JPH08316067A (en) | 1996-11-29 |
Family
ID=14831859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12227295A Withdrawn JPH08316067A (en) | 1995-05-22 | 1995-05-22 | Choke coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08316067A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100431175B1 (en) * | 2000-12-19 | 2004-05-12 | 삼성전기주식회사 | A chip inductor having multi-turns |
| JP2007228717A (en) * | 2006-02-23 | 2007-09-06 | Matsushita Electric Ind Co Ltd | Inverter device |
| JP2007266140A (en) * | 2006-03-27 | 2007-10-11 | Aw Japan:Kk | Line filter having flat structure |
| WO2018008884A1 (en) * | 2016-07-07 | 2018-01-11 | 이주열 | Double helical planar transformer |
| WO2018012759A1 (en) * | 2016-07-12 | 2018-01-18 | 이주열 | Dual-core planar transformer |
| WO2018012760A1 (en) * | 2016-07-14 | 2018-01-18 | 이주열 | Common-coil planar transformer |
| JP2020072140A (en) * | 2018-10-30 | 2020-05-07 | 北川工業株式会社 | Noise filter and electronic circuit board with noise filter |
-
1995
- 1995-05-22 JP JP12227295A patent/JPH08316067A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100431175B1 (en) * | 2000-12-19 | 2004-05-12 | 삼성전기주식회사 | A chip inductor having multi-turns |
| JP2007228717A (en) * | 2006-02-23 | 2007-09-06 | Matsushita Electric Ind Co Ltd | Inverter device |
| JP2007266140A (en) * | 2006-03-27 | 2007-10-11 | Aw Japan:Kk | Line filter having flat structure |
| WO2018008884A1 (en) * | 2016-07-07 | 2018-01-11 | 이주열 | Double helical planar transformer |
| WO2018012759A1 (en) * | 2016-07-12 | 2018-01-18 | 이주열 | Dual-core planar transformer |
| WO2018012760A1 (en) * | 2016-07-14 | 2018-01-18 | 이주열 | Common-coil planar transformer |
| JP2020072140A (en) * | 2018-10-30 | 2020-05-07 | 北川工業株式会社 | Noise filter and electronic circuit board with noise filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020806 |