JPH02137206A - Choke coil - Google Patents

Choke coil

Info

Publication number
JPH02137206A
JPH02137206A JP29209388A JP29209388A JPH02137206A JP H02137206 A JPH02137206 A JP H02137206A JP 29209388 A JP29209388 A JP 29209388A JP 29209388 A JP29209388 A JP 29209388A JP H02137206 A JPH02137206 A JP H02137206A
Authority
JP
Japan
Prior art keywords
winding
coils
coil
choke coil
bobbin
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.)
Granted
Application number
JP29209388A
Other languages
Japanese (ja)
Other versions
JPH0834161B2 (en
Inventor
Shinichi Kurano
慎一 倉野
Masahiro Bando
政博 坂東
Yasuhiro Mitsuya
三屋 康宏
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP63292093A priority Critical patent/JPH0834161B2/en
Publication of JPH02137206A publication Critical patent/JPH02137206A/en
Publication of JPH0834161B2 publication Critical patent/JPH0834161B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To provide predetermined inductance value and current capacity even though distributed capacity becomes smaller and to facilitate winding operation by winding several coils of single layer winding on a bobbin fitted on a core and connecting these coils in parallel with each other. CONSTITUTION:A choke coil 1 comprises a closed magnetic circuit type core 2 of ferrite or the like, a bobbin 3 of a resin or the like fitted on the leg of the core 2 and coils 4 wound on the bobbin 3. These coils 4 are connected in parallel with each other so that they generate magnetic fluxes in the same direction. When several coils of single-layer winding, N coils for example are layered one on another in this manner, the choke coil 1 is allowed to have current capacity N<1/2> times as large as that of the case of a single layer winding. Now that there is no need of increasing the current capacity any more, the diameter of wire can be decreased as that much. Accordingly, the number of turns of each coil can be about N<1/3> times as large and an inductance value is about N<2/3> as large as that of the case of a single layer winding.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、EMI除去フィルタ等に用いられるチョーク
コイルに関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a choke coil used in an EMI removal filter or the like.

(従来の技術) 従来のこの種のチョークコイルとして、その要部のみを
示す第4図や第5図のように、図示していないコアに嵌
挿したボビンItに巻線を往復巻きしてコイル12を巻
装したものがある。ここでの往復巻きとは、巻線をボビ
ン11の一方端から他方端まで巻回したあと、その巻線
の上にその他方端から元の一方端へ巻き返して巻回する
もので、その繰り返しにより必要な層数だけ積み重ねる
ようにしたものである。なお、第4図に示す往復巻きの
コイル12は奇数層目と偶数層目とが互いに半ピツチず
れるようにして巻回したものであり、第5図に示す往復
巻きのコイル12は、各層の巻線の位置がそれぞれ同じ
位置にくるようにして巻回したものである。
(Prior art) As shown in FIGS. 4 and 5, which show only the main parts of this type of choke coil, a conventional choke coil is wound reciprocatingly around a bobbin It fitted into a core (not shown). There is one in which a coil 12 is wound. The reciprocating winding here refers to winding the winding wire from one end of the bobbin 11 to the other end, and then winding the winding wire from the other end back to the original one end. This allows the required number of layers to be stacked. Note that the reciprocating coil 12 shown in FIG. 4 is wound so that the odd-numbered layers and even-numbered layers are shifted by half a pitch from each other, and the reciprocating coil 12 shown in FIG. The windings are wound so that each winding is in the same position.

(発明が解決しようとする課題) 上記従来例の往復巻きによるチョークコイルにあっては
、そのコイルの構造上、不可避的に分布容量が大きくな
って自己共振周波数か低くなっていることから、高い周
波数領域では大きな挿入損失特性を得ることができず、
その結果、良好なノイズ除去ができないという問題があ
った。
(Problems to be Solved by the Invention) In the conventional choke coil with reciprocating winding described above, due to the structure of the coil, the distributed capacitance inevitably becomes large and the self-resonant frequency becomes low. It is not possible to obtain large insertion loss characteristics in the frequency domain,
As a result, there was a problem that good noise removal could not be performed.

このような問題を解決するためには分布容量を小さくす
ることが必要となる。そのためのコイルの構造として第
6図に示すような単層巻や第7図の示すようなバンク巻
がある。この単層巻とは巻線を1層のみ巻回するもので
ある。また、バンク巻とは、1タ一ン巻回するごとに巻
線の位置を上下に移動させたものである。
In order to solve such problems, it is necessary to reduce the distributed capacitance. Coil structures for this purpose include single layer winding as shown in FIG. 6 and bank winding as shown in FIG. This single-layer winding is one in which the winding wire is wound in only one layer. Furthermore, bank winding is one in which the position of the winding is moved up and down each time one turn is wound.

ところが、上記のようにコイルを単層巻で形成する場合
では、分布容量は確かに小さくなるが、1層のみしか巻
回しない措造であるから、そのターン数に大きな制約が
あり、所定のインダクタンス値が得難くなるという新た
な問題が生じる。
However, when the coil is formed with a single layer of winding as described above, the distributed capacitance is certainly small, but since it is a structure in which only one layer is wound, there is a big restriction on the number of turns. A new problem arises in that it becomes difficult to obtain an inductance value.

このような単層巻の場合でも巻線の線径を小さくしてタ
ーン数をかせぐようにすることにより所定のインダクタ
ンス値を得るようにすることも可能ではあるが、線径を
小さくすると所定の電流容量が得難くなるという上記と
は別異の問題が生じる。
Even in the case of such a single-layer winding, it is possible to obtain a predetermined inductance value by reducing the wire diameter of the winding wire and increasing the number of turns. A problem different from the above arises in that it becomes difficult to obtain current capacity.

また、コイルをバンク巻で形成する場合では、巻線か1
ターンごとに上下するため、せっかく巻回した巻線が作
業の途中でばらけやすく、そのため、巻線作業が煩雑に
なり機械による自動巻が難しくなるという別異の問題が
ある。
In addition, if the coil is formed by bank winding, one
Since the winding goes up and down with each turn, the winding that has been wound easily becomes unraveled during the work, which makes the winding work complicated and makes automatic winding difficult.

本発明は、上述の課題に鑑みてなされたものであって、
コイルの分布容量が小さくなるにもかかわらず、所定の
インダクタンス値および電流容量を得ることができ、し
かも巻線作業も容易に行うことが可能なチョークコイル
を提供することを目的としている。
The present invention has been made in view of the above-mentioned problems, and includes:
It is an object of the present invention to provide a choke coil that can obtain a predetermined inductance value and current capacity even though the distributed capacitance of the coil is small, and can also be easily winded.

(課題を解決するための手段) このような目的を達成するために、本発明のチョークコ
イルにおいては、単層巻のコイルを複数層積み重ねて巻
装し、それらのコイルを互いに並列接続したことを特徴
としている。
(Means for Solving the Problems) In order to achieve such an object, in the choke coil of the present invention, a plurality of single-layer coils are stacked and wound, and these coils are connected in parallel with each other. It is characterized by

(作用) 単層巻のコイルを複数層積み重ねただけであるため、分
布容量は従来の往復巻きのように大きくはならず、しか
も単層巻のコイルであるために、線径を小さくしてター
ン数をかせいて所定のインダクタンス値を得るようにし
ても、複数層のコイルが並列接続されているため、所定
の電流容量を得ることができる。
(Function) Because it is simply a stack of multiple single-layer coils, the distributed capacitance is not as large as with conventional reciprocating winding.Furthermore, since it is a single-layer coil, the wire diameter can be reduced. Even if a predetermined inductance value is obtained by increasing the number of turns, a predetermined current capacity can be obtained because multiple layers of coils are connected in parallel.

(実施例) 以下、本発明の実施例を図面を参照して詳細に説明する
(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

第1図は本発明の実施例に係るチョークコイルの要部断
面正面図である。第1図に示される本実施例のチョーク
コイルlは、フェライト等からなる閉磁路型のコア2を
備え、そのコア2の脚部に樹脂などでできたボビン3が
嵌挿されるとともに、そのボビン3にコイル4が巻装さ
れて構成されている。
FIG. 1 is a sectional front view of a main part of a choke coil according to an embodiment of the present invention. The choke coil l of this embodiment shown in FIG. The coil 4 is wound around the coil 3.

このコイル4は、単層巻のコイルを3層積み重ねて形成
したしので、各層のコイルは、その両端末部かボビン3
に取り付けられている図示していないピン端子にそれぞ
れ接続され、それぞれ同方向の磁束を形成するように、
それらが互いに並列接続されたものである。なお、コイ
ル4は、各層のコイルがいずれも単層巻であるため、ボ
ビン3の寸法が従来と同様のものであると、所定のイン
ダクタンス値が得られない。そのため、巻線の線径を小
さくしてターン数をかせぐようにする必要かある。また
、第1図の実施例では、単層巻の各コイルは奇数層目と
偶数層目とを互いに半ピツチずらせているが、各層の巻
線が同じ位置にするようにしてもよい。
This coil 4 is formed by stacking three layers of single-layer coils, so the coils of each layer are connected to both ends of the coil or to the bobbin 3.
are connected to pin terminals (not shown) attached to the
They are connected in parallel to each other. Note that since each layer of the coil 4 has a single layer winding, if the dimensions of the bobbin 3 are the same as those of the conventional coil, a predetermined inductance value cannot be obtained. Therefore, it is necessary to reduce the wire diameter of the winding wire to increase the number of turns. Further, in the embodiment shown in FIG. 1, the odd-numbered and even-numbered layers of each single-layer coil are shifted by half a pitch from each other, but the windings of each layer may be placed at the same position.

第2図は従来例のチョークコイルと本発明のチョークコ
イルとの挿入損失特性を示す図である。第2図において
、点線で示すものは、従来例の往復巻きのらので、線径
0.8mmφの巻線を、44タ一ン巻回したものである
。このチョークコイルの定格電流は3アンペア(A)で
ある。また、点鎖線で示すものは、従来例の単層巻のも
ので、線径014mmφの巻線を49タ一ン巻回したし
のである。このチョークコイルの定格電流は18Aであ
る。また、実線で示すものは、本発明に係るチョークコ
イルで、線径0.4mmφの巻線を49タ一ン巻回した
単層巻のコイルを3層猜み重ねたものである。このチョ
ークコイルの定格′電流は2.8Aである。なお、いず
れのチョークフィルもそのコアおよびボビンはそれぞれ
同寸法のものを用いており、インダクタンス値は同じ値
になっている。第2図から明らかなように、従来例の往
復巻きのものは、高い周波数領域で挿入損失特性が悪く
なるのに対し、従来例の単層巻のものは、高い周波数領
域でも往復巻きのものに比べて挿入損失特性は良好であ
る。しかし、この単層巻のものは定格電流が低くなって
しまうという難点がある。
FIG. 2 is a diagram showing insertion loss characteristics of a conventional choke coil and a choke coil of the present invention. In FIG. 2, the dotted line indicates a conventional reciprocating winding wheel, in which a winding wire with a wire diameter of 0.8 mmφ is wound in 44 turns. The rated current of this choke coil is 3 amperes (A). Moreover, what is shown by the dotted chain line is a conventional single-layer winding, in which a winding wire with a wire diameter of 014 mmφ is wound with 49 turns. The rated current of this choke coil is 18A. Furthermore, the solid line indicates a choke coil according to the present invention, which is a single-layer coil in which three layers of single-layer coils each having a wire diameter of 0.4 mm wound with 49 turns are stacked one on top of the other. The rated current of this choke coil is 2.8A. Note that the core and bobbin of each choke fill have the same dimensions, and the inductance value is the same. As is clear from Figure 2, the conventional single-layer winding has poor insertion loss characteristics in the high frequency range, whereas the conventional single-layer winding has a reciprocating winding even in the high frequency range. The insertion loss characteristics are better than that of the previous model. However, this single-layer winding has the disadvantage that the rated current is low.

これに対して、本発明に係るチョークコイルでは、挿入
損失特性が従来例の単層巻のものと同様に優れており、
しかも定格電流も従来例の往復巻きのものに近い値を有
している。このことから、本発明のチョークコイルは、
従来例のものに比べて優れたものであることが理解でき
る。
On the other hand, the choke coil according to the present invention has excellent insertion loss characteristics similar to the conventional single-layer winding.
Moreover, the rated current has a value close to that of the conventional reciprocating winding. From this, the choke coil of the present invention is
It can be seen that this is superior to the conventional example.

なお、積み重ねる単層巻のコイルの層数は上記実施例の
ような3層に限らず、2以上の複数層であればよい。こ
のように、単層巻のコイルを複数層積み重ねることによ
り、その積み重ね層数をNとすると、電流容量は単層巻
1層のみの約51倍となる。電流容量をを大きくする必
要がないとすればその分だけ線径を小さくできるから、
各層のコイルのターン数は約35倍となる。また、イン
ダクタンス値は約35戸倍となる。
Note that the number of layers of the single-layer coil to be stacked is not limited to three layers as in the above embodiment, but may be two or more layers. In this way, by stacking a plurality of single-layer coils, if the number of stacked layers is N, the current capacity becomes about 51 times that of only one single-layer coil. If there is no need to increase the current capacity, the wire diameter can be reduced accordingly.
The number of turns of the coil in each layer is approximately 35 times as large. Furthermore, the inductance value is approximately 35 times higher.

第3図は本発明の他の実施例に係るチョークコイルの要
部断面正面図である。第3図に示される実施例にあって
は、第1図の実施例のチョークコイルと同様の巻線方式
を用いて構成したコモンモードチョークコイル5を示し
ており、閉磁路型のコア6の脚部にそれぞれボビン7.
8が嵌挿されるとともに、そのボビン7.8にコイル9
.IOかそれぞれ互いに逆方向に巻回されて構成された
ものである。この第3図のコモンモードチョークコイル
5も、第1図のチョークコイル1と同様に優れた挿入損
失特性を呈するものとなる。
FIG. 3 is a sectional front view of a main part of a choke coil according to another embodiment of the present invention. The embodiment shown in FIG. 3 shows a common mode choke coil 5 constructed using the same winding method as the choke coil of the embodiment shown in FIG. Bobbin on each leg 7.
8 is inserted into the bobbin 7.8, and the coil 9 is inserted into the bobbin 7.8.
.. The IOs are each wound in opposite directions. The common mode choke coil 5 shown in FIG. 3 also exhibits excellent insertion loss characteristics similar to the choke coil 1 shown in FIG.

(発明の効果) 以上説明したことから明らかなように本発明によれば、
コアに嵌挿されたボビンに単層巻のコイルを複数層積み
重ねて巻装し、それらのコイルを互いに並列接続するよ
うに構成したから、分布容量が小さくなるにもかかわら
ず、所定のインダクタンス値および電流容量が得られ、
巻線作業も容易になるという浸れた効果を奏する。
(Effects of the Invention) As is clear from the above explanation, according to the present invention,
Since multiple layers of single-layer coils are stacked and wound around a bobbin inserted into the core, and these coils are connected in parallel with each other, the predetermined inductance value can be maintained even though the distributed capacitance is small. and current capacity are obtained,
This has the advantage of making winding work easier.

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

第1図は本発明の一実施例のチョークコイルの要部断面
正面図、第2図は同実施例のチョークコイルの挿入損失
特性図、第3図は本発明の他の実施例に係るコモンモー
ドチョークコイルの要部断面正面図である。 第4図ないし第7図は従来例のチョークコイルの概略構
成図である。 1.5・・・チョークコイル、2 、6−・・コア、3
.78・・・ボビン、4,9.10・・・コイル。 出廓人株式会社村田製作所
FIG. 1 is a cross-sectional front view of essential parts of a choke coil according to an embodiment of the present invention, FIG. 2 is an insertion loss characteristic diagram of a choke coil according to the same embodiment, and FIG. 3 is a common cross-sectional view of a choke coil according to another embodiment of the present invention. FIG. 2 is a sectional front view of a main part of a mode choke coil. 4 to 7 are schematic diagrams of conventional choke coils. 1.5...Choke coil, 2, 6-...Core, 3
.. 78...Bobbin, 4,9.10...Coil. Murata Manufacturing Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] (1)コアに嵌挿されたボビンに単層巻のコイルが複数
層積み重ねて巻装され、それらのコイルが互いに並列接
続されていることを特徴とするチョークコイル。
(1) A choke coil characterized in that a plurality of single-layer coils are stacked and wound around a bobbin that is inserted into a core, and the coils are connected in parallel to each other.
JP63292093A 1988-11-17 1988-11-17 Common mode choke coil Expired - Lifetime JPH0834161B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63292093A JPH0834161B2 (en) 1988-11-17 1988-11-17 Common mode choke coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63292093A JPH0834161B2 (en) 1988-11-17 1988-11-17 Common mode choke coil

Publications (2)

Publication Number Publication Date
JPH02137206A true JPH02137206A (en) 1990-05-25
JPH0834161B2 JPH0834161B2 (en) 1996-03-29

Family

ID=17777458

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63292093A Expired - Lifetime JPH0834161B2 (en) 1988-11-17 1988-11-17 Common mode choke coil

Country Status (1)

Country Link
JP (1) JPH0834161B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008096487A1 (en) * 2007-02-05 2008-08-14 Murata Manufacturing Co., Ltd. Winding type coil and its winding method
WO2008098582A1 (en) * 2007-02-13 2008-08-21 Akf Salama Saleh El Sharif A safe nuclear reactant
JP2009252845A (en) * 2008-04-02 2009-10-29 Tdk Corp Balloon transformer
JP2012119617A (en) * 2010-12-03 2012-06-21 Mitsubishi Electric Corp Reactor
JP2017163026A (en) * 2016-03-10 2017-09-14 Tdk株式会社 Coil device
JP2017188568A (en) * 2016-04-06 2017-10-12 株式会社村田製作所 Coil component

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135715U (en) * 1981-02-18 1982-08-24
JPS619823U (en) * 1984-06-22 1986-01-21 株式会社東芝 air core reactor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135715U (en) * 1981-02-18 1982-08-24
JPS619823U (en) * 1984-06-22 1986-01-21 株式会社東芝 air core reactor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008096487A1 (en) * 2007-02-05 2008-08-14 Murata Manufacturing Co., Ltd. Winding type coil and its winding method
JPWO2008096487A1 (en) * 2007-02-05 2010-05-20 株式会社村田製作所 Winding type coil and winding method thereof
US7932803B2 (en) 2007-02-05 2011-04-26 Murata Manufacturing Co., Ltd. Wire-wound type coil and winding method therefor
WO2008098582A1 (en) * 2007-02-13 2008-08-21 Akf Salama Saleh El Sharif A safe nuclear reactant
JP2009252845A (en) * 2008-04-02 2009-10-29 Tdk Corp Balloon transformer
JP2012119617A (en) * 2010-12-03 2012-06-21 Mitsubishi Electric Corp Reactor
JP2017163026A (en) * 2016-03-10 2017-09-14 Tdk株式会社 Coil device
JP2017188568A (en) * 2016-04-06 2017-10-12 株式会社村田製作所 Coil component
US10600554B2 (en) 2016-04-06 2020-03-24 Murata Manufacturing Co., Ltd. Coil component
US11037720B2 (en) 2016-04-06 2021-06-15 Murata Manufacturing Co., Ltd. Coil component
US11830657B2 (en) 2016-04-06 2023-11-28 Murata Manufacturing Co., Ltd. Coil component

Also Published As

Publication number Publication date
JPH0834161B2 (en) 1996-03-29

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