JP2003324018A - Common mode choke coil - Google Patents
Common mode choke coilInfo
- Publication number
- JP2003324018A JP2003324018A JP2002127731A JP2002127731A JP2003324018A JP 2003324018 A JP2003324018 A JP 2003324018A JP 2002127731 A JP2002127731 A JP 2002127731A JP 2002127731 A JP2002127731 A JP 2002127731A JP 2003324018 A JP2003324018 A JP 2003324018A
- Authority
- JP
- Japan
- Prior art keywords
- common mode
- winding
- mode choke
- choke coil
- collar portion
- 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
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子機器のノイズ
除去をするコモンモードチョークコイル、特に表面実装
に対応した小型・薄型化されたチップ型のコモンモード
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 common mode choke coil for removing noise from electronic equipment, and more particularly to a chip-type common mode choke coil which is small in size and thin and is suitable for surface mounting.
【０００２】[0002]
【従来の技術】コモンモードチョークコイルは、２つ以
上のコイルを磁気的に組み合わせたもので、コモンモー
ドのノイズを除去するチョークコイルである。2. Description of the Related Art A common mode choke coil is a choke coil that magnetically combines two or more coils and removes common mode noise.
【０００３】最近の電子機器、特に携帯機器は、小型、
軽量化志向により、そこに搭載される電子回路部はます
ます小型化され、また、これに搭載される電子部品の高
集積化の要求が強い。このようなことで、ここに使用さ
れるコモンモードチョークコイルも、プリント基板への
高密度表面実装を実現するために、小型化されたチップ
型に進展してきている。Recent electronic devices, especially portable devices, are small,
Due to the weight reduction, the electronic circuit section mounted therein is becoming smaller and smaller, and there is a strong demand for high integration of electronic components mounted therein. As a result, the common mode choke coil used here has also been developed into a miniaturized chip type in order to realize high-density surface mounting on a printed circuit board.
【０００４】これらの小型コモンモードチョークコイル
の主流は、日型（日の字型）またはめがね型と呼ばれる
ものである。これは、高抵抗率のニッケル亜鉛系フエラ
イト、マンガン亜鉛系フエライトなどの磁性体コアから
なり、正面視した形状は、コイルが巻回される巻芯部の
両側に、そのコイルを形成する導線の通し口を有する外
枠部で形成されている。The mainstream of these small-sized common mode choke coils is called a Japanese type (a Japanese letter type) or a spectacle type. This consists of a magnetic core of high-resistivity nickel-zinc-based ferrite, manganese-zinc-based ferrite, or the like. The shape viewed from the front is such that the conductors forming the coil are on both sides of the core around which the coil is wound. It is formed of an outer frame portion having a through hole.
【０００５】なお、このような形状を持つ巻芯部にバイ
ファイラ巻きにより、２つ以上のコイルが磁気的に組み
合わされて、更に、巻回されたコイルの巻き始め部と巻
き終わり部は外枠部に設けられた端子に接続されコモン
モードチョークコイルを構成している。Two or more coils are magnetically combined by a bifilar winding around the winding core portion having such a shape, and the winding start portion and winding end portion of the wound coil are outer frames. A common mode choke coil is configured by being connected to terminals provided in the section.
【０００６】[0006]
【発明が解決しようとする課題】前述したような、小型
・軽量の電子機器に対応するコモンモードチョークコイ
ルに求められる主要な特性としては、サイズは出来る限
り小型・薄型化されており、また、許容電流値は出来る
限り大きく、高周波帯域において高インピーダンスが確
保されることである。The main characteristics required for the common mode choke coil corresponding to the small and lightweight electronic equipment as described above are that the size is as small and thin as possible, and The allowable current value is as large as possible, and high impedance is secured in the high frequency band.
【０００７】しかしながら、限られたサイズ内で許容電
流を大きくしようとすると、太い導線を巻くことにな
り、そのためコイルの巻数が少なくなり高インピーダン
スが取れない、逆に高いインピーダンスを得ようとし
て、巻数を多くすると細い導線を用いることになり、そ
れにより許容電流値は小さくなる。However, when trying to increase the permissible current within a limited size, a thick conductor wire is wound, so that the number of turns of the coil is reduced and high impedance cannot be obtained. Conversely, the number of turns is increased to obtain high impedance. If the value is increased, a thin conductive wire is used, which reduces the allowable current value.
【０００８】さらに、前記のめがね形は、前記通し口の
断面が円形状となっているので、バイファイラ巻きにお
いて確実に巻芯に対して平行密着巻きが確保できず、コ
イル自体の諸特性を低下させていた。Further, since the cross section of the through hole of the above-mentioned eyeglasses is circular, parallel close contact winding cannot be surely secured to the winding core in the bifilar winding, and various characteristics of the coil itself are deteriorated. I was letting it.
【０００９】このようなことで、定格電圧ＤＣ．５０
Ｖ、定格電流ＤＣ１．５Ａ、インピーダンス６００Ω
（１００ＫＨｚにおいて）のコモンモードチョークコイ
ルを得ようとすると、従来品のサイズは、横幅が５．３
ｍｍ、縦幅が５ｍｍ、厚さが２．７ｍｍが限度であっ
た。As a result, the rated voltage DC. Fifty
V, rated current DC 1.5A, impedance 600Ω
When trying to obtain a common mode choke coil (at 100 KHz), the size of the conventional product is 5.3 in width.
mm, the vertical width was 5 mm, and the thickness was 2.7 mm.
【００１０】そこで、本発明は上記の問題点を解決し
て、各サイズが従来品より小さくて、また従来品と同等
の電気的特性を有する小型・薄型されたコモンモードチ
ョークコイルを提供しようというものである。Therefore, the present invention intends to solve the above problems and provide a small and thin common mode choke coil each of which has a size smaller than that of a conventional product and has electrical characteristics equivalent to those of the conventional product. It is a thing.
【００１１】[0011]
【課題を解決するための手段】以上の課題を解決するに
は、請求項１に記載の発明のように、巻芯部の両端に略
長方形の鍔部が平行に配され、この短辺側の鍔部間は、
鍔部に略垂直な壁部で連結され、長辺側の鍔部間は、開
放された形状に形成された磁性体コアからなり、この磁
性体コアの巻芯部に、絶縁された導線が巻回されコイル
を形成し、このコイルの巻き始めおよび巻き終わり部
が、前記鍔部に設けられたそれぞれの電極に接続するよ
うな構成にすれば前記目的を達成することができる。In order to solve the above-mentioned problems, as in the invention described in claim 1, substantially rectangular flange portions are arranged in parallel at both ends of the winding core portion, and the shorter side Between the collar parts of
The magnetic cores are connected to the flanges by a wall that is substantially vertical, and between the flanges on the long side are formed of a magnetic core formed in an open shape, and an insulated conductive wire is attached to the core of the magnetic core. The above object can be achieved by forming a coil by winding and connecting the winding start and winding end portions to the respective electrodes provided on the collar portion.
【００１２】なお、前記電極を形成する鍔部は、請求項
２に記載の発明のように、平面視形状が略Ｉ形状とし、
また、請求項３に記載の発明のように、側面視形状が略
Ｅ形状とすれば前記目的を達成することができる。The collar portion forming the electrode has a substantially I shape in a plan view as in the invention according to claim 2.
Further, as in the invention according to the third aspect, if the side view shape is a substantially E shape, the above object can be achieved.
【００１３】また、前記磁性体コアは、請求項４に記載
の発明のように、前記の両側壁部の外面間寸法をＬ４ｍ
ｍ、前記壁部の幅寸法をＬ５ｍｍ、前記鍔部の外面間の
最大寸法をＬ６ｍｍとしたときに、
Ｌ４≒３．１
Ｌ５≒２．３
Ｌ６≒１．７
に構成することにより前記目的を達成することができ
る。Further, in the magnetic core according to the invention of claim 4, the dimension between the outer surfaces of the both side wall portions is L4m.
m, the width dimension of the wall portion is L5 mm, and the maximum dimension between the outer surfaces of the collar portion is L6 mm, the above-mentioned object is achieved by configuring L4≈3.1 L5≈2.3 L6≈1.7. Can be achieved.
【００１４】更に、前記磁性体コアは、請求項５に記載
の発明のように、前記巻芯部の断面積をＳ１ｍｍ２ 、
前記鍔部の断面積をそれぞれＳ２ｍｍ２ およびＳ３ｍ
ｍ２、前記壁部の断面積をそれぞれＳ４ｍｍ２ および
Ｓ５ｍｍ２ としたとき、
（１／２）×Ｓ１＝Ｓ２＝Ｓ３＝Ｓ４＝Ｓ５
に構成することにより前記目的を達成することができ
る。Further, in the magnetic core, as in the invention described in claim 5, the cross-sectional area of the winding core portion is S1 mm 2 ,
The cross-sectional areas of the collar are S2mm 2 and S3m, respectively.
m 2, when the cross-sectional area of said wall portion and respectively S4mm 2 and S5mm 2, it is possible to achieve the object by configuring the (1/2) × S1 = S2 = S3 = S4 = S5.
【００１５】また、前記磁性体コアは、請求項６に記載
の発明のように、前記巻芯部と前記鍔部が接するコーナ
部、および、前記鍔部と前記壁部が接する内側のコーナ
部の略直角部を前記導線の半径と等しい凹曲面で肉盛り
をすることにより前記目的を達成することができる。Further, in the magnetic core, as in the invention described in claim 6, a corner portion in which the winding core portion and the flange portion are in contact with each other, and an inside corner portion in which the flange portion and the wall portion are in contact with each other The above-mentioned object can be achieved by building up the substantially right-angled portion of the above with a concave curved surface having the same radius as the conducting wire.
【００１６】また、前記磁性体コアは、請求項７に記載
の発明のように、前記壁部と略平行に配置されている前
記巻芯部に巻回された前記コイルの最大仕上がり幅寸法
を、Ｌ７ｍｍ２ としたとき、このＬ７ｍｍ２ は前記壁
部の幅寸法Ｌ５ｍｍ２ に対し、Ｌ７＜Ｌ５に構成する
ことにより前記目的を達成することができる。Further, the magnetic core has a maximum finished width dimension of the coil wound around the winding core portion arranged substantially in parallel with the wall portion, as in the invention described in claim 7. , when the L7mm 2, the L7mm 2 whereas the width L5mm 2 of the wall portion, it is possible to achieve the object by configuring the L7 <L5.
【００１７】[0017]
【発明の実施の形態】次に、本発明の実施の形態を図面
に従って説明する。図１は、本発明の実施の形態を示す
コモンモードチョークコイルを説明する正面視した要部
断面図である。図１において、コモンモードチョークコ
イルは、高周波用の磁性体コア１の中央部に設けられて
いる巻芯部１ａに絶縁された導線を巻回しコイル２を形
成し、そのコイル２の巻き始め部２ａは、磁性体コア１
の鍔１ｂの外側面の端部近傍に設けられた電極３の巻き
始め電極３ａに接続し、また、巻き終わり部２ｂは、磁
性体コア１の鍔１ｂの外側面の端部近傍に設けられた電
極３の巻き終わり電極３ｂに接続され構成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a principal part for explaining a common mode choke coil showing an embodiment of the present invention when viewed from the front. In FIG. 1, the common mode choke coil forms a coil 2 by winding an insulated wire around a winding core portion 1a provided at the center of a high frequency magnetic core 1 and forming a winding start portion of the coil 2. 2a is a magnetic core 1
Is connected to the winding start electrode 3a of the electrode 3 provided near the outer surface of the collar 1b, and the winding end portion 2b is provided near the end of the outer surface of the collar 1b of the magnetic core 1. The electrode 3 is connected to the end-of-winding electrode 3b.
【００１８】なお、磁性体コア１の巻芯部１ａの鍔部１
ｂと反対側には、鍔部１ｃが設けられており、この鍔部
１ｂと１ｃは、ほぼ垂直状の壁部１ｄと１ｅで結合さ
れ、コイル２を巻回するときの導線の口字状の通し口１
ｆと１ｇを形成している。また、コイル２は、例えば、
線径０．１６ｍｍの２種ポリウレタン銅線（以降２ＵＥ
Ｗという）の平行線を４．５回巻き付けられ形成されて
いる。なお、ここではバイファイラ巻きとして、２組の
コイルが形成されている。The collar portion 1 of the winding core portion 1a of the magnetic core 1
A flange portion 1c is provided on the side opposite to b, and the flange portions 1b and 1c are joined by substantially vertical wall portions 1d and 1e, and the lead wire is shaped like a letter when winding the coil 2. Through hole 1
f and 1 g are formed. The coil 2 is, for example,
Type 2 polyurethane copper wire with a wire diameter of 0.16 mm (2UE
It is formed by winding parallel lines of (W) 4.5 times. Two sets of coils are formed here as a bifilar winding.
【００１９】図２は、図１における磁性体コア１を説明
する正面図である。また、図３は、図２のＡ−Ａ断面矢
視図、図４は図２のＢ−Ｂ断面矢視図である。図２，図
３および図４において、磁性体コア１の巻芯部１ａは、
断面が楕円形の柱で、下側に鍔部１ｂ、上側に鍔部１ｃ
を備え、その鍔部１ｂと１ｃの両端は平行で略垂直状の
壁部１ｄと１ｅでそれぞれつながり、正面からは略口字
状の導線の通し口１ｆと１ｇが見えるように一体で形成
されている。なお、巻芯部１ａは、断面を丸形あるいは
角形にしてもよいが、断面が楕円形にすることにより、
限られたサイズにおいて、巻芯部の断面積大きく、尚か
つ、導線の通し口の広い磁性体コアを得ることができ
る。FIG. 2 is a front view for explaining the magnetic core 1 in FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIG. 4 is a sectional view taken along the line BB of FIG. In FIGS. 2, 3 and 4, the winding core portion 1 a of the magnetic core 1 is
It is a pillar with an elliptical cross section, and the collar 1b is on the lower side and the collar 1c is on the upper side.
Both ends of the flanges 1b and 1c are connected by parallel and substantially vertical wall portions 1d and 1e, respectively, and are integrally formed so that the through holes 1f and 1g of the substantially U-shaped conducting wire can be seen from the front. ing. The winding core 1a may have a round or square cross section, but by making the cross section oval,
With a limited size, it is possible to obtain a magnetic material core having a large cross-sectional area of the winding core portion and a wide opening for the conducting wire.
【００２０】この磁性体コア１の材質は、ここでは高抵
抗率のニッケル亜鉛系フエライト、あるいは、マンガン
亜鉛系フエライトなどの焼結磁性体から形成されてい
る。また、下側の鍔部１ｂは、コイル２の電極３ａと３
ｂを固設する側となり、図２の如く正面から見てＥ字状
を呈している。また、図３の如く鍔部１ｂは、平面から
見るとＩ字状を呈している。The material of the magnetic core 1 is made of a sintered magnetic material such as nickel-zinc ferrite or manganese-zinc ferrite having a high resistivity here. Further, the lower collar portion 1b is provided with the electrodes 3a and 3a of the coil 2.
It is the side where b is fixed and has an E shape when viewed from the front as shown in FIG. Further, as shown in FIG. 3, the collar portion 1b has an I-shape when viewed from above.
【００２１】なお、図３、図４において、壁部１ｄの外
面と壁部１ｅの外面間寸法をＬ４ｍｍ、壁部１ｄおよび
１ｅの幅寸法をＬ５ｍｍ、鍔部１ｂの外側突起面と鍔部
１ｃの外面間寸法をＬ６ｍｍとすると、
Ｌ４≒３．１ 、なお ３．０８〜３．１４が望ましい
Ｌ５≒２．３ 、なお ２．３０〜２．３６が望ましい
Ｌ６≒１．７ 、なお １．７０〜１．７７が望ましい
の寸法で構成されている。3 and 4, the dimension between the outer surface of the wall portion 1d and the outer surface of the wall portion 1e is L4 mm, the width dimension of the wall portions 1d and 1e is L5 mm, the outer protruding surface of the collar portion 1b and the collar portion 1c. When the dimension between the outer surfaces is L6 mm, L4≈3.1, preferably 3.08 to 3.14 is desirable L5≈2.3, and 2.30 to 2.36 is desirable L6≈1.7, and 1. 70-1.77 is constructed with the desired dimensions.
【００２２】また、巻芯部１ａの断面積をＳ１ｍｍ
２ 、鍔部１ｂと１ｃの断面積をＳ２１ｍｍ２ とＳ２２
ｍｍ２ 、壁部１ｄと１ｅの断面積をＳ３１ｍｍ２ とＳ
３２ｍｍ２ としたとき、
Ｓ１≒１．２ 、なお １．２０〜１．２４
が望ましい
Ｓ２１≒Ｓ２２≒０．６ 、なお ０．６０〜０．６２
が望ましい
Ｓ３１≒Ｓ３２≒０．６ 、なお ０．６０〜０．６２
が望ましい
になるように各部分の寸法を構成されている。The cross-sectional area of the winding core 1a is S1 mm.
2 , the cross-sectional area of the collar portion 1b and 1c S21mm 2 and S22
mm 2 , the cross-sectional area of the wall portions 1d and 1e is S31 mm 2 and S
When set to 32 mm 2 , S1≈1.2, and 1.20 to 1.24
Is desirable S21≈S22≈0.6, still 0.60 to 0.62
Is desirable S31≈S32≈0.6, still 0.60 to 0.62
The dimensions of each part are configured to be desirable.
【００２３】なお、前記のように構成された磁性体コア
１の磁気回路の構成を示すと、図３のＦ１とＦ２にな
る。Ｆ１は、鍔部１ｂを通過する磁束を表しており、Ｆ
２は鍔部１ｃを通過する磁束を表している。例えば、巻
芯部１ａから鍔部１ｂに流れる磁束Ｆ１は、鍔部１ｂの
形状に添って流れ、壁部１ｄと１ｅをそれぞれ通過し、
鍔部１ｃに流れ巻芯部１ａに帰ってくる。なお、実用に
おいては、この逆の流れが交互に生じている。ここにお
いて、鍔部１ｂと１ｃおよび壁部１ｄと１ｅのそれぞれ
の断面積の大きさが、巻芯部１ａの断面積の２分の１以
上を満足していればここを通過する磁束の漏れがない。The structure of the magnetic circuit of the magnetic core 1 having the above-described structure is shown by F1 and F2 in FIG. F1 represents a magnetic flux passing through the collar portion 1b, and
Reference numeral 2 represents a magnetic flux passing through the collar portion 1c. For example, the magnetic flux F1 flowing from the winding core portion 1a to the collar portion 1b flows along the shape of the collar portion 1b, passes through the wall portions 1d and 1e, respectively,
It flows into the collar portion 1c and returns to the winding core portion 1a. It should be noted that, in practical use, this reverse flow occurs alternately. Here, if the cross-sectional area of each of the collar portions 1b and 1c and the wall portions 1d and 1e satisfies one-half or more of the cross-sectional area of the winding core portion 1a, leakage of magnetic flux passing therethrough. There is no.
【００２４】図５は、前述のような寸法で構成された磁
性体コアの巻芯部に線径０．１６ｍｍの２ＵＥＷ平行線
を４．５回巻き付け、１００ＭＨｚにおいて、その巻芯
部の断面積とコイルのインピーダンスの値を測定した特
性図である。図５によると、巻芯部の断面積が大きくな
るに従い、インピーダンスが大きく成ることが分かる。
また、インピーダンス６００Ωを得ようとすれば、磁性
体コアの巻芯部の断面積は１．２ｍｍ２ を確保すれ良
いことがわかる。なお、インピーダンス測定は、ヒュー
レットパッカード社製４１９４Ａ型ＩＭＰＥＤＡＮＣＥ
／ＧＡＩＮ−ＰＨＡＳＨＥ ＡＮＡＬＹＺＥＲを使用し
た。FIG. 5 shows that a 2UEW parallel wire having a wire diameter of 0.16 mm is wound around the winding core of the magnetic core having the above-described dimensions 4.5 times, and the cross-sectional area of the winding core is 100 MHz. It is a characteristic view which measured the value of the impedance of a coil. It can be seen from FIG. 5 that the impedance increases as the cross-sectional area of the winding core increases.
Further, it is understood that if the impedance of 600Ω is to be obtained, the cross-sectional area of the winding core portion of the magnetic core should be 1.2 mm 2 . Impedance measurement is performed by Hewlett-Packard Company 4194A type IMPEDANCE.
/ GAIN-PHASH ANALYZER was used.
【００２５】図６は、図１の電極３ａ、３ｂ側からみた
コモンモードチョークコイルの斜視図である。コモンモ
ードチョークコイルは、前述のように２個の巻線を磁気
的に組合せしたものであるので、電気回路的にも全て２
組備えている。ここにおいて、外部回路と接続される巻
き始め電極３ａと巻き終わり電極３ｂは、例えば銀ペー
スト層の上に半田メッキ層を皮膜した導電被膜層で、磁
性体コア１の鍔部１ｂのＥ字状の外側段部の両端に、１
次側電極３ａ１、３ａ２、２次側電極３ｂ１、３ｂ２と
それぞれ電気的に独立して形成されている。FIG. 6 is a perspective view of the common mode choke coil viewed from the electrodes 3a, 3b side of FIG. Since the common mode choke coil is a combination of two windings magnetically as described above, it is possible to use only two coils in terms of electric circuit.
Have a set. Here, the winding start electrode 3a and the winding end electrode 3b connected to an external circuit are conductive coating layers obtained by coating a solder plating layer on a silver paste layer, for example, and are E-shaped of the collar portion 1b of the magnetic core 1. 1 at both ends of the outer step
The secondary electrodes 3a1 and 3a2 are electrically independent of the secondary electrodes 3b1 and 3b2.
【００２６】また、コイル２の巻き始め部２ａの１次巻
線の巻始め部２ａ１は電極３ａ１に、巻き終わり部２ｂ
の１次巻線の巻き終わり部２ｂ１は電極３ｂ１に、ま
た、コイル２の巻き始め部２ａの２次巻線の巻始め部２
a２は電極３ａ２に、巻き終わり部２ｂの２次巻線の巻
き終わり部２ｂ２は電極３ｂ２にそれぞれ熱圧着などで
固着されている。Further, the winding start portion 2a1 of the primary winding of the winding start portion 2a of the coil 2 is connected to the electrode 3a1 and the winding end portion 2b.
The winding end portion 2b1 of the primary winding of the second winding is the electrode 3b1 and the winding start portion 2a of the secondary winding of the winding start portion 2a of the coil 2 is
The a2 is fixed to the electrode 3a2, and the winding end 2b2 of the secondary winding of the winding end 2b is fixed to the electrode 3b2 by thermocompression bonding or the like.
【００２７】なお、磁性体コア１の鍔部１ｂを平面視で
はＩ字状、また、正面視ではＥ字状にしていることによ
り、Ｅ字状の両端付近は、電極の被膜層の接着面積を大
きくし、その剥離強度を上げられる。また、Ｉ字状の両
端付近は、コイル２の巻き始め部２ａや巻き終わり部２
ｂを容易に配線できるガイドの役割を持たすことができ
る。更に、コイル２の巻き始め部２ａと巻き終わり部２
ｂは熱圧着されるので導線の絶縁性が著しく低下すると
きもあるが、磁性体コア１の鍔部１ｂのＩ字状の各内角
部、およびＥ字状の中央の突形段部１ｂｂは、コイル２
の１次側と２次側を熱的・電気的に確実に分離すること
ができる。Since the collar portion 1b of the magnetic core 1 has an I shape in a plan view and an E shape in a front view, the adhesive area of the coating layer of the electrode is close to both ends of the E shape. To increase the peel strength. In addition, the winding start portion 2a and the winding end portion 2 of the coil 2 are formed near both ends of the I-shape.
It can have a role of a guide for easily wiring b. Further, the winding start portion 2a and the winding end portion 2 of the coil 2
Since b is thermocompression-bonded, the insulating property of the conductor may be significantly deteriorated. However, the I-shaped inner corners of the collar portion 1b of the magnetic core 1 and the E-shaped central protruding stepped portion 1bb are , Coil 2
The primary side and the secondary side can be reliably separated thermally and electrically.
【００２８】図７は、図１に示すコモンモードチョーク
コイルの巻芯部１ａに巻回したコイル２を正面からみて
断面構造を説明する説明図である。図７において、巻芯
部１ａと鍔部１ｂおよび巻芯部１ａと鍔部１ｃが接する
コーナ部１ｒに凹曲面の肉盛りがされている。この半径
をｒ１とし、コイル２の導線の半径をｒ２としたとき、
ｒ１＝ｒ２と寸法が構成されているので、コイル２は確
実に巻芯部１ａに密着して巻くことができ、漏洩磁束を
減らし、更に、機械的強度を向上させることができる。FIG. 7 is an explanatory view for explaining the sectional structure of the coil 2 wound around the winding core portion 1a of the common mode choke coil shown in FIG. 1 when viewed from the front. In FIG. 7, a concave curved surface is built up on a corner portion 1r where the winding core portion 1a and the collar portion 1b and the winding core portion 1a and the collar portion 1c are in contact with each other. When this radius is r1 and the radius of the conductor of the coil 2 is r2,
Since the size is configured as r1 = r2, the coil 2 can be reliably wound in close contact with the winding core portion 1a, the leakage magnetic flux can be reduced, and the mechanical strength can be improved.
【００２９】図８は、図１に示すコモンモードチョーク
コイルの巻芯部１ａに巻回したコイル２を平面からみて
断面構造を説明する説明図である。図６において、コイ
ル２は、巻芯部２ａに導線が２層に密着巻きされてい
る。このときのコイルの外側巻線の寸法をＬ７としたと
き、Ｌ７＜Ｌ５と寸法が構成されているので、コイル２
は外部にはみ出すことはない。FIG. 8 is an explanatory view for explaining the sectional structure of the coil 2 wound around the winding core portion 1a of the common mode choke coil shown in FIG. In FIG. 6, the coil 2 has a conductive wire wound in two layers on the winding core 2a. When the dimension of the outer winding of the coil at this time is set to L7, the dimension L7 <L5 is set.
Does not protrude outside.
【００３０】前述のように構成された磁性体コア１に、
銅線部が直径０．１６ｍｍの２ＵＥＷ平行線を４．５回
巻き、コモンモードチョークコイルを形成し、そのイン
ピーダンスを測定すると、１００ＭＨｚ近辺で常に６０
０Ωのインピーダンス特性を得ることがわかった。な
お、このコイルにＤＣ１．５Ａ通電しても、巻線の平均
温度上昇は、巻線の許容温度以下となることもがわかっ
た。In the magnetic core 1 constructed as described above,
When the copper wire part wound a 2 UEW parallel wire with a diameter of 0.16 mm 4.5 times to form a common mode choke coil and measured its impedance, it was found to be 60 at around 100 MHz.
It was found that an impedance characteristic of 0Ω was obtained. It was also found that the average temperature rise of the winding becomes equal to or lower than the allowable temperature of the winding even when DC 1.5 A is applied to this coil.
【００３１】[0031]
【発明の効果】本発明に係るコモンモードチョークコイ
ルは、前述のように構成されているので、
（１）多層巻に対して、太い線を数多く巻けるように巻
線スペースを広くとれる。
（２）磁性体コアの各部分の実効断面積を大きくし、巻
線の密着性を良くし、漏洩磁束を無くして磁性体コアの
最適特性を生かすことができる。
（３）端子部を磁性体コアの外枠に密着し固設させるこ
とができる。
（４）コイルの巻き始め部、巻き終わり部のガイドを設
けたことにより、端子部への接続作業が容易になり、ま
た巻き始め部と巻き終わり部間のショート事故を防止で
きる。Since the common mode choke coil according to the present invention is constructed as described above, (1) the winding space can be wide so that a large number of thick wires can be wound in the multi-layer winding. (2) The effective cross-sectional area of each part of the magnetic core can be increased, the adhesion of the windings can be improved, the leakage magnetic flux can be eliminated, and the optimum characteristics of the magnetic core can be utilized. (3) The terminal part can be firmly attached to the outer frame of the magnetic core. (4) By providing guides for the winding start portion and the winding end portion of the coil, connection work to the terminal portion is facilitated, and a short-circuit accident between the winding start portion and the winding end portion can be prevented.
【００３２】よって、各サイズが従来より小さくて、ま
た従来品と同等の電気的特性を有する小型・薄型化され
た、表面実装に適したコモンモードチョークコイルを提
供することができる。Therefore, it is possible to provide a common mode choke coil which is smaller in size than the conventional one, has the same electrical characteristics as the conventional product, and is thin and suitable for surface mounting.
【図１】本発明の実施の形態を示すコモンモードチョー
クコイルの要部断面図である。FIG. 1 is a sectional view of essential parts of a common mode choke coil showing an embodiment of the present invention.
【図２】図１の磁性体コアを示す正面図である。FIG. 2 is a front view showing the magnetic core of FIG.
【図３】図２の磁性体コアの構造を説明するＡ−Ａ断面
矢視図である。3 is a cross-sectional view taken along the line AA illustrating the structure of the magnetic core of FIG.
【図４】図２の磁性体コアの構造を説明するＢ−Ｂ断面
矢視図である。4 is a cross-sectional view taken along the line BB illustrating the structure of the magnetic core of FIG.
【図５】本発明の実施の形態を示すコモンモードチョー
クコイルの巻芯部の断面積とインピーダンス特性の関係
を示す特性図である。FIG. 5 is a characteristic diagram showing the relationship between the cross-sectional area of the winding core of the common mode choke coil and the impedance characteristic according to the embodiment of the present invention.
【図６】図１に示すコモンモードチョークコイルを電極
側から見た斜視図である。6 is a perspective view of the common mode choke coil shown in FIG. 1 viewed from the electrode side.
【図７】図１に示すコモンモードチョークコイルの巻線
された巻芯部断面の構造を示す説明図である。7 is an explanatory diagram showing a structure of a cross section of a wound core portion of the common mode choke coil shown in FIG.
【図８】図１に示すコモンモードチョークコイルの巻線
された巻芯部断面の構造を示す説明図である。8 is an explanatory diagram showing a structure of a cross section of a wound core portion of the common mode choke coil shown in FIG. 1. FIG.
１ 磁性体コア １ａ 巻芯部 １ｂ、１ｃ 鍔部 １ｄ、１ｅ 壁部 １ｆ、１ｇ 導線の通し口 ２ コイル ２ａ 巻き始め部 ２ｂ 巻き終わり部 ３ａ 巻き始め電極 ３ｂ 巻き終わり電極 1 Magnetic core 1a winding core 1b, 1c collar part 1d, 1e wall 1f, 1g Conductor passage 2 coils 2a winding start part 2b Winding end 3a Winding start electrode 3b Winding end electrode
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０１Ｆ 37/00 Ｈ０１Ｆ 15/10 Ｆ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) H01F 37/00 H01F 15/10 F
Claims (7)
配され、この短辺側の鍔部間は、鍔部に略垂直な壁部で
連結され、長辺側の鍔部間は、開放された形状に形成さ
れた磁性体コアからなり、この巻芯部に、絶縁された導
線が巻回されコイルを形成し、このコイルの巻き始めお
よび巻き終わり部が、前記鍔部に設けられたそれぞれの
電極に接続されたことを特徴とするコモンモードチョー
クコイル。1. A generally rectangular collar portion is arranged in parallel at both ends of a winding core portion, and the flange portions on the short side are connected by wall portions substantially vertical to the collar portion, and the collar portion on the long side is connected. The space is composed of a magnetic core formed in an open shape, and an insulated conductive wire is wound around the winding core to form a coil, and the winding start and winding end portions of the coil are the collar portion. A common mode choke coil characterized in that it is connected to each of the electrodes provided on the.
が略Ｉ形状である請求項１に記載のコモンモードチョー
クコイル。2. The common mode choke coil according to claim 1, wherein the flange portion forming the electrode has a substantially I shape in plan view.
が略Ｅ形状である請求項１乃至請求項２のいずれかに記
載のコモンモードチョークコイル。3. The common mode choke coil according to claim 1, wherein the collar portion forming the electrode has a substantially E shape in a side view.
面間寸法をＬ４ｍｍ，前記壁部の幅寸法をＬ５ｍｍ、前
記鍔部の外面間の最大寸法をＬ６ｍｍとしたときに、 Ｌ４≒３．１ Ｌ５≒２．３ Ｌ６≒１．７ に構成された請求項１乃至請求項３のいずれかに記載の
コモンモードチョークコイル。4. The magnetic core has a dimension L4 mm between outer surfaces of the both side wall portions, a width dimension L5 mm of the wall portion, and a maximum dimension L6 mm between outer surfaces of the collar portion. The common mode choke coil according to claim 1, wherein the common mode choke coil has a configuration of 3.1 L5≈2.3 L6≈1.7.
記鍔部の断面積をそれぞれＳ２ｍｍ２ およびＳ３ｍｍ
２ 、前記壁部の断面積をそれぞれＳ４ｍｍ２およびＳ
５ｍｍ２ としたとき、 （１／２）×Ｓ１＝Ｓ２＝Ｓ３＝Ｓ４＝Ｓ５ に構成された請求項１または請求項２のいずれかに記載
のコモンモードチョークコイル。5. The cross-sectional area of the core portion is S1 mm 2 , and the cross-sectional area of the collar portion is S2 mm 2 and S3 mm, respectively.
2 , the cross-sectional area of the wall is S4mm 2 and S, respectively.
The common mode choke coil according to claim 1 or 2, wherein (1/2) × S1 = S2 = S3 = S4 = S5 when set to 5 mm 2 .
部、および、前記鍔部と前記壁部が接する内側のコーナ
部の略直角部を前記導線の半径と等しい凹曲面で肉盛り
をした請求項１乃至請求項６のいずれかに記載のコモン
モードチョークコイル。6. A buildup of a corner portion where the winding core portion and the collar portion are in contact with each other, and a substantially right angle portion of an inner corner portion where the collar portion and the wall portion are in contact with each other, with a concave curved surface equal to the radius of the conductor wire. The common mode choke coil according to any one of claims 1 to 6.
巻芯部に巻回された前記コイルの最大仕上がり幅寸法を
Ｌ７ｍｍとしたとき、このＬ７ｍｍは前記壁部の幅寸法
Ｌ５ｍｍに対し、 Ｌ７＜Ｌ５ に構成された請求項１乃至請求項５のいずれかに記載の
コモンモードチョークコイル。7. When the maximum finished width dimension of the coil wound around the winding core portion arranged substantially parallel to the wall portion is L7 mm, this L7 mm is compared with the width dimension L5 mm of the wall portion. , L7 <L5, The common mode choke coil according to any one of claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002127731A JP2003324018A (en) | 2002-04-30 | 2002-04-30 | Common mode choke coil |
| CNB031243479A CN1299304C (en) | 2002-04-30 | 2003-04-30 | Common mode choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002127731A JP2003324018A (en) | 2002-04-30 | 2002-04-30 | Common mode choke coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003324018A true JP2003324018A (en) | 2003-11-14 |
Family
ID=29267663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002127731A Pending JP2003324018A (en) | 2002-04-30 | 2002-04-30 | Common mode choke coil |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003324018A (en) |
| CN (1) | CN1299304C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015130540A (en) * | 2015-04-13 | 2015-07-16 | 東邦亜鉛株式会社 | Annular coil |
| JP2020113644A (en) * | 2019-01-11 | 2020-07-27 | 京セラ株式会社 | Core component, method of manufacturing same, and inductor |
| KR20210119326A (en) | 2020-03-24 | 2021-10-05 | 티디케이가부시기가이샤 | Coil device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101276670B (en) * | 2007-03-29 | 2010-12-01 | 台达电子工业股份有限公司 | Surface adhesion type magnetic element |
| CN104979064A (en) * | 2014-04-08 | 2015-10-14 | 浙江科达磁电有限公司 | EPQ type magnetic core and magnetic inductance element containing same |
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| JPH0587913U (en) * | 1992-04-23 | 1993-11-26 | 株式会社村田製作所 | Chip coil |
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| JP2000299224A (en) * | 1999-04-13 | 2000-10-24 | Taiyo Yuden Co Ltd | Common-mode choke coil |
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| JP3528741B2 (en) * | 2000-02-22 | 2004-05-24 | 松下電器産業株式会社 | Coil parts |
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- 2002-04-30 JP JP2002127731A patent/JP2003324018A/en active Pending
-
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- 2003-04-30 CN CNB031243479A patent/CN1299304C/en not_active Expired - Fee Related
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|---|---|---|---|---|
| JPH0363912U (en) * | 1989-10-24 | 1991-06-21 | ||
| JPH0587913U (en) * | 1992-04-23 | 1993-11-26 | 株式会社村田製作所 | Chip coil |
| JPH07115023A (en) * | 1993-10-18 | 1995-05-02 | Murata Mfg Co Ltd | Coil component |
| JPH08306559A (en) * | 1995-05-01 | 1996-11-22 | Taiyo Yuden Co Ltd | Coil part |
| JPH0963864A (en) * | 1995-08-29 | 1997-03-07 | Tokin Corp | Chip coil |
| JPH11206057A (en) * | 1998-01-16 | 1999-07-30 | Oriental Motor Co Ltd | Structure of insulator for stator core of motor |
| JP2000208331A (en) * | 1999-01-18 | 2000-07-28 | Murata Mfg Co Ltd | Winding common mode choke coil |
| JP2000269050A (en) * | 1999-03-16 | 2000-09-29 | Taiyo Yuden Co Ltd | Common-mode choke coil |
| JP2000299223A (en) * | 1999-04-13 | 2000-10-24 | Taiyo Yuden Co Ltd | Common-mode choke coil |
| JP2000299224A (en) * | 1999-04-13 | 2000-10-24 | Taiyo Yuden Co Ltd | Common-mode choke coil |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015130540A (en) * | 2015-04-13 | 2015-07-16 | 東邦亜鉛株式会社 | Annular coil |
| JP2020113644A (en) * | 2019-01-11 | 2020-07-27 | 京セラ株式会社 | Core component, method of manufacturing same, and inductor |
| JP7173874B2 (en) | 2019-01-11 | 2022-11-16 | 京セラ株式会社 | CORE COMPONENTS, ITS MANUFACTURING METHOD, AND INDUCTORS |
| KR20210119326A (en) | 2020-03-24 | 2021-10-05 | 티디케이가부시기가이샤 | Coil device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1299304C (en) | 2007-02-07 |
| CN1455421A (en) | 2003-11-12 |
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