JP2004273490A - Wire-wound common mode choke coil and its manufacturing method - Google Patents

Wire-wound common mode choke coil and its manufacturing method Download PDF

Info

Publication number
JP2004273490A
JP2004273490A JP2003058049A JP2003058049A JP2004273490A JP 2004273490 A JP2004273490 A JP 2004273490A JP 2003058049 A JP2003058049 A JP 2003058049A JP 2003058049 A JP2003058049 A JP 2003058049A JP 2004273490 A JP2004273490 A JP 2004273490A
Authority
JP
Japan
Prior art keywords
wound
wires
wire
choke coil
common mode
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
JP2003058049A
Other languages
Japanese (ja)
Other versions
JP3952971B2 (en
Inventor
Yoshio Hanato
義夫 花登
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 JP2003058049A priority Critical patent/JP3952971B2/en
Publication of JP2004273490A publication Critical patent/JP2004273490A/en
Application granted granted Critical
Publication of JP3952971B2 publication Critical patent/JP3952971B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Coil Winding Methods And Apparatuses (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a wire-wound common mode choke coil that has good characteristics and increases the degree of design freedom of a circuit on which the choke coil is mounted. <P>SOLUTION: The wire-wound common mode choke coil has a core having a wound core section and three wires wound around the wound core section. Of the three wires, two wires are wound around the wound core section as a first layer, and the other wire is wound as a second layer. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、巻線型コモンモードチョークコイルに関する。特に、3本のワイヤを有する巻線型コモンモードチョークコイルに関する。
【0002】
【従来の技術】
巻線型コモンモードチョークコイルとして、3本のワイヤが同一方向でコアに巻回されるいわゆるトリファイラ巻タイプものが知られている。このトリファイラ型コモンモードチョークコイルの例として、3本のワイヤが単層整列巻されたものが特開平2002−246244号公報に示されている。
【0003】
単層整列巻の巻線型コモンモードチョークコイルの例を図4及び図5に示す。図4は底面図である。また、図5は図4に示す切断面BB’による断面図(一部省略)である。
【0004】
巻線型コモンモードチョークコイル11は、巻芯部14及びその両端に設けられる鍔部13a、13bよりなるフェライトのコア12を有する。前記巻芯部14には、三本のワイヤ16a、16b、16cが巻回される。
【0005】
前記鍔部13aには端子電極15a、15b、15cが設けられる。また、前記鍔部13bには端子電極15d、15e、15fが設けられる。そして、ワイヤ16aの両端は端子電極15a、15dに、ワイヤ16bの両端は端子電極15b、15eに、ワイヤ16cの両端は端子電極15c、15fにそれぞれ接続される。
【0006】
さらに、前記コア12の上面側を覆うように天板17が取り付けられる。
【0007】
図6に示すように、上述の巻線型コモンモードチョークコイル11の等価回路は、前記三本のワイヤ16a、16b、16cがつくるコイルが並列接続されたものである。
【0008】
上述の巻線型コモンモードチョークコイル11において、図8(a)に示すようにワイヤ16aとワイヤ16b間、またはワイヤ16bとワイヤ16c間が接続されたときのノーマルモードインピーダンス(以下ノーマルモード1とする)と、図8(b)に示すようにワイヤ16aとワイヤ16c間が接続されたときのノーマルモードインピーダンス(以下ノーマルモード2とする)を比較すると、図7に示されるようにノーマルモード1の方が低い値が得られる。これは、図8(b)ではワイヤ16aとワイヤ16cの間にワイヤ16bが存在するため、ワイヤ16aにより形成されるコイルとワイヤ16cにより形成されるコイル間の距離が大きくなり、両コイルの結合度が低下するためである。
【0009】
【特許文献1】
特開平2002−246244号公報
【0010】
【発明が解決しようとする課題】
上述の巻線型コモンモードチョークコイル11のワイヤ16bがグランドライン、ワイヤ16a及びワイヤ16cが信号ラインとされる場合、ワイヤ16aとワイヤ16b間、及びワイヤ16bとワイヤ16c間ともにノーマルモード1が得られる。
【0011】
これに対し、ワイヤ16aがグランドライン、ワイヤ16b及びワイヤ16cが信号ラインとされる場合、ワイヤ16aとワイヤ16b間はノーマルモード1が得られるのに対し、ワイヤ16aとワイヤ16c間はノーマルモード2が得られる。この場合、両信号でノーマルモードインピーダンス特性に違いが生じるとともに、一方の信号でノーマルモードインピーダンスが増大してしまう。
【0012】
この問題を避けるためには、上述のようにワイヤ16bをグランドに接続して使用する必要がある。しかし、この制約により部品が実装される回路の設計自由度が低下するという問題が生ずる。
【0013】
本発明では、上述の問題を解決し、特性が良好で、実装される回路の設計自由度が高い巻線型コモンモードチョークコイルを得ることを課題とする。
【0014】
【課題を解決するための手段】
上述の問題を解決するため、本発明の巻線型コモンモードチョークコイルは、巻芯部を有するコアと、前記巻芯部に巻回される3本のワイヤを有し、前記ワイヤのうちの2本が前記巻芯部上の第一層目に巻回され、他の1本のワイヤが第二層目に巻回されることを特徴とする。
【0015】
また、前記巻線型コモンモードチョークコイルにおいて、前記第一層目に2本のワイヤが交互に巻回されるとともに、前記第二層目のワイヤが前記2本のワイヤの中間上に巻回されることを特徴とする。
【0016】
また、前記巻線型コモンモードチョークコイルの前記3本のワイヤにおいて、各ワイヤ間の距離が全て等しいことを特徴とする。
【0017】
このような構成により、3本のワイヤのいずれがグランドに接続された場合でも、同じノーマルモードインピーダンス特性が得られる。このため、コモンモードチョークコイルを実装する回路の設計自由度が向上する。また、ワイヤ間の距離が接近することにより前記各ワイヤによるコイル間の結合度が増大するため、低いノーマルモードインピーダンス値を得ることができる。
【0018】
また、本発明の巻線型コモンモードチョークコイルの製造方法は、巻芯部を有するコアと、前記巻芯部に巻回される3本のワイヤを有する巻線型コモンモードチョークコイルにおいて、前記巻芯部表面の第一層目に2本のワイヤが交互に巻回される工程と、続いてもう1本のワイヤが第二層目かつ前記2本のワイヤの中間上に巻回される工程を有する。
【0019】
また、前記製造方法であって、前記3本のワイヤにおいて各ワイヤ間の距離が全て等しくなるように前記第一層目及び第二層目のワイヤが巻回されることを特徴とする。
【0020】
【発明の実施の形態】
本発明の一実施の形態である巻線型コモンモードチョークコイルについて、図1及び図2に基づき説明する。図1は、前記巻線型コモンモードチョークコイルの底面図である。また、図2は、図1の切断面AA’による前記巻線型コモンモードチョークコイルの断面図(一部省略)である。
【0021】
巻線型コモンモードチョークコイル1は、巻芯部4及び前記巻芯部4の両端に設けられる鍔部3a、3bよりなるコア2を有する。
【0022】
前記コア2の材料としては、フェライト等の磁性体材料やアルミナ等の絶縁体材料が用いられる。また、樹脂等の有機材料や、鉄粉末等の磁性粉末入り樹脂等の複合材料も使用される。
【0023】
前記鍔部3aの底面には、所定の間隔をおいて三つの端子電極5a、5b、5cが形成される。また、前記鍔部3bの底面には、端子電極5d、5e、5fがそれぞれ形成される。
【0024】
また、前記巻芯部4には三本のワイヤ6a、6b、6cが巻回される。ワイヤの材料としては、例えばポリウレタン樹脂等の絶縁材料で被膜された銅線等が用いられる。
【0025】
前記ワイヤ6aの両端は端子電極5a、5dに、前記ワイヤ6bの両端は端子電極5b、5eに、ワイヤ6cの両端は端子電極5c、5fにそれぞれ接続される。ワイヤの端子電極への接続は、熱圧着や半田付け等によりなされる。熱圧着の場合、加熱されたヒーターチップの先端にてワイヤ端部が端子電極に押圧されることにより、前記ワイヤ端部が偏平状に変形して端子電極に接合される。
【0026】
また、前記コア2の上面側を覆うように天板7が取り付けられる。
【0027】
そして、上述の巻線型コモンモードチョークコイル1において、前記ワイヤ6a、6cは前記巻芯部4上の第一層目に巻回され、前記ワイヤ6a、6c上の第二層目に前記ワイヤ6bが巻回される。
【0028】
このように三本のワイヤが二層に巻回されることにより、ワイヤが単層に巻回される場合に比べて巻芯部の長さを約2/3に低減できるため、部品を小型化することができる。
【0029】
また、上述の巻線型コモンモードチョークコイル1は、図2に示すように前記第一層目のワイヤ6aとワイヤ6bが交互に巻回され、前記第二層目のワイヤ6cは前記ワイヤ6aとワイヤ6bの中間上に巻回される。
【0030】
さらに、ワイヤ6a、6b、6cを構成する各ワイヤ間の距離は全て等しいことが好ましい。すなわち、図3においてワイヤ6a、6b、6cの各断面の中心をそれぞれP、Q、Rとしたとき、三角形PQRが正三角形となるように巻回されることが好ましい。
【0031】
このように各ワイヤ間の距離が全て等しいことにより、ワイヤ6aとワイヤ6b間が接続されたときと、ワイヤ6bとワイヤ6c間が接続されたときと、ワイヤ6aとワイヤ6c間が接続されたときで、同じノーマルモードインピーダンス値が得られる。さらに、各ワイヤ間の距離が接近することにより前記各ワイヤによるコイル間の結合度が増大するため、低いノーマルモードインピーダンス値が得られる。
【0032】
これにより、前記巻線型コモンモードチョークコイル1のワイヤ6a、6b、6cのいずれがグランドラインとされても、2つの信号ラインと前記グランドライン間のノーマルモードインピーダンス値が同一となるため、巻線型コモンモードチョークコイル1が実装される回路の設計自由度が向上する。また、前記ノーマルモードインピーダンス値が低いことにより、前記巻線型コモンモードチョークコイル1の特性が向上する。
【0033】
上述の巻線型コモンモードチョークコイル1の製造におけるワイヤの巻芯部への巻回工程は、まず第一層目としてワイヤ6aとワイヤ6cが巻芯部4上に同時に巻回される工程と、続いて第二層目としてワイヤ6bが前記第一層目上に巻回される工程よりなることが好ましい。このようにすることで、容易かつ精度よくワイヤを巻回することができる。
【0034】
なお、本発明は上述の実施形態に限定されるものではなく、その要旨の範囲内で種々に変更することができる。
【0035】
例えば、上述の巻線型コモンモードチョークコイル1では三本のワイヤは図3に示されるように互いに接しているが、第一層目のワイヤ間に隙間があってもよい。また、前記第一層目の隙間において、上部にワイヤ6bが設けられる隙間と、設けられない隙間で、隙間の大きさが違っていてもよい。
【0036】
また、前記巻線型コモンモードチョークコイル1において、三本のワイヤの径は同一であるが、同一でなくてもよい。また、ワイヤの径の大きさについても制限はない。
【0037】
【発明の効果】
以上述べてきたように、本発明の巻線型コモンモードチョークコイルは、巻芯部を有するコアを備え、3本のワイヤが前記巻芯部に巻回されてなる巻線型コモンモードチョークコイルにおいて、前記ワイヤのうちの2本が前記巻芯部上の第一層目に巻回され、他の1本のワイヤが第二層目に巻回されることにより、ワイヤが単層に巻回される場合に比べて巻芯部の長さを約2/3にすることができるため、部品を小型化できるという効果を有する。
【0038】
また、前記第一層目に2本のワイヤが交互に巻回されるとともに、前記第二層目のワイヤが前記2本のワイヤの中間上に巻回されることにより、あるいは、前記構成に加え、前記3本のワイヤにおいて各ワイヤ間の距離が全て等しいことにより、いずれのワイヤがグランドラインとされても、2つの信号ラインと前記グランドライン間のノーマルモードインピーダンス値が同一となるため、前記巻線型コモンモードチョークコイルが実装される回路の設計自由度が向上する効果を有する。また、各ワイヤ間の距離が接近することにより前記各ワイヤによるコイル間の結合度が増大するため、前記ノーマルモードインピーダンス値が低くなり、前記巻線型コモンモードチョークコイルの特性が向上する効果を有する。
【0039】
また、本発明の巻線型コモンモードチョークコイルの製造方法は、巻芯部を有するコアを備え、3本のワイヤが前記巻芯部に巻回されてなる巻線型コモンモードチョークコイルの製造方法において、前記巻芯部表面の第一層目に2本のワイヤが交互に巻回される工程と、続いてもう1本のワイヤが第二層目かつ前記2本のワイヤの中間上に巻回される工程を有することにより、ワイヤを容易かつ精度よく巻回することができるという効果を有する。
【図面の簡単な説明】
【図1】本発明の一実施の形態による巻線型コモンモードチョークコイルの底面図。
【図2】図1の巻線型コモンモードチョークコイルの切断面AA’による断面図。
【図3】図2の要部拡大図。
【図4】従来の巻線型コモンモードチョークコイルの底面図。
【図5】図4の巻線型コモンモードチョークコイルの切断面BB’による断面図。
【図6】図1及び図4の巻線型コモンモードチョークコイルの等価回路図。
【図7】図4の巻線型コモンモードチョークコイルのインピーダンス特性を示すグラフ。
【図8】図4の巻線型コモンモードチョークコイルのインピーダンス測定回路図。
【符号の説明】
1、11 巻線型コモンモードチョークコイル
2、12 コア
3a、3b、13a、13b 鍔部
4、14 巻芯部
5a、5b、5c、5d、5e、5f、15a、15b、15c、15d、
15e、15f 端子電極
6a、6b、6c、16a、16b、16c ワイヤ
P ワイヤ6a断面の中心
Q ワイヤ6b断面の中心
R ワイヤ6c断面の中心
7、17 天板
18 測定器
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wound common mode choke coil. In particular, it relates to a wound common mode choke coil having three wires.
[0002]
[Prior art]
As a wound type common mode choke coil, a so-called trifilar wound type in which three wires are wound around a core in the same direction is known. Japanese Patent Application Laid-Open No. 2002-246244 discloses an example of this trifilar type common mode choke coil in which three wires are wound in a single-layer arrangement.
[0003]
FIGS. 4 and 5 show examples of single-layer aligned winding wound common mode choke coils. FIG. 4 is a bottom view. FIG. 5 is a cross-sectional view (partially omitted) of the cut surface BB ′ shown in FIG.
[0004]
The wire-wound common mode choke coil 11 has a core 12 of ferrite including a core part 14 and flange parts 13a and 13b provided at both ends thereof. Three wires 16a, 16b, 16c are wound around the core 14.
[0005]
The flange 13a is provided with terminal electrodes 15a, 15b, 15c. Further, terminal electrodes 15d, 15e and 15f are provided on the flange 13b. Both ends of the wire 16a are connected to the terminal electrodes 15a and 15d, both ends of the wire 16b are connected to the terminal electrodes 15b and 15e, and both ends of the wire 16c are connected to the terminal electrodes 15c and 15f.
[0006]
Further, a top plate 17 is attached so as to cover the upper surface side of the core 12.
[0007]
As shown in FIG. 6, an equivalent circuit of the above-mentioned wound type common mode choke coil 11 is one in which coils formed by the three wires 16a, 16b, and 16c are connected in parallel.
[0008]
In the above-described wound type common mode choke coil 11, a normal mode impedance (hereinafter referred to as a normal mode 1) when the wire 16a and the wire 16b or the wire 16b and the wire 16c are connected as shown in FIG. 8) and normal mode impedance (hereinafter referred to as normal mode 2) when the wires 16a and 16c are connected as shown in FIG. 8B, as shown in FIG. Lower values are obtained. This is because the distance between the coil formed by the wire 16a and the coil formed by the wire 16c increases because the wire 16b exists between the wire 16a and the wire 16c in FIG. This is because the degree decreases.
[0009]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2002-246244
[Problems to be solved by the invention]
When the wire 16b of the above-mentioned wound type common mode choke coil 11 is a ground line and the wires 16a and 16c are signal lines, the normal mode 1 is obtained between the wires 16a and 16b and between the wires 16b and 16c. .
[0011]
On the other hand, when the wire 16a is a ground line and the wires 16b and 16c are signal lines, the normal mode 1 is obtained between the wires 16a and 16b, whereas the normal mode 2 is obtained between the wires 16a and 16c. Is obtained. In this case, the normal mode impedance characteristics differ between the two signals, and the normal mode impedance increases with one of the signals.
[0012]
In order to avoid this problem, it is necessary to connect the wire 16b to the ground as described above. However, this restriction causes a problem that the degree of freedom in designing a circuit on which components are mounted is reduced.
[0013]
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems and to obtain a wound common mode choke coil having good characteristics and a high degree of freedom in designing a circuit to be mounted.
[0014]
[Means for Solving the Problems]
In order to solve the above-described problem, a wound type common mode choke coil according to the present invention includes a core having a core portion, and three wires wound around the core portion. A book is wound on the first layer on the core, and another wire is wound on the second layer.
[0015]
In the wire-wound common mode choke coil, two wires are wound alternately on the first layer, and the wire on the second layer is wound on the middle of the two wires. It is characterized by that.
[0016]
Further, in the three wires of the wire-wound common mode choke coil, the distances between the wires are all equal.
[0017]
With such a configuration, the same normal mode impedance characteristics can be obtained regardless of which of the three wires is connected to the ground. Therefore, the degree of freedom in designing a circuit on which the common mode choke coil is mounted is improved. Further, as the distance between the wires becomes shorter, the degree of coupling between the coils by the respective wires increases, so that a low normal mode impedance value can be obtained.
[0018]
Further, the method of manufacturing a wound type common mode choke coil according to the present invention is the method of manufacturing a wound type common mode choke coil having a core having a core portion and three wires wound around the core portion. A step in which two wires are alternately wound on the first layer of the part surface, and a step in which another wire is subsequently wound on the second layer and the middle of the two wires. Have.
[0019]
Further, in the manufacturing method, the first and second layers of the wires are wound such that the distances between the three wires are all equal.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
A wound common mode choke coil according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a bottom view of the wound type common mode choke coil. FIG. 2 is a cross-sectional view (partially omitted) of the wire-wound common mode choke coil taken along a cut plane AA ′ in FIG.
[0021]
The wound type common mode choke coil 1 has a core 2 including a core 4 and flanges 3 a and 3 b provided at both ends of the core 4.
[0022]
As a material of the core 2, a magnetic material such as ferrite or an insulating material such as alumina is used. Also, a composite material such as an organic material such as a resin or a resin containing a magnetic powder such as an iron powder is used.
[0023]
Three terminal electrodes 5a, 5b, and 5c are formed on the bottom surface of the flange 3a at predetermined intervals. Terminal electrodes 5d, 5e, and 5f are formed on the bottom surface of the flange 3b, respectively.
[0024]
Further, three wires 6a, 6b, 6c are wound around the core portion 4. As a material of the wire, for example, a copper wire coated with an insulating material such as a polyurethane resin is used.
[0025]
Both ends of the wire 6a are connected to terminal electrodes 5a and 5d, both ends of the wire 6b are connected to terminal electrodes 5b and 5e, and both ends of the wire 6c are connected to terminal electrodes 5c and 5f. The connection of the wire to the terminal electrode is made by thermocompression bonding, soldering, or the like. In the case of thermocompression bonding, the end of the wire is pressed against the terminal electrode at the tip of the heated heater chip, so that the end of the wire is deformed flat and joined to the terminal electrode.
[0026]
A top plate 7 is attached so as to cover the upper surface of the core 2.
[0027]
In the above-mentioned wound type common mode choke coil 1, the wires 6a and 6c are wound on the first layer on the core 4 and the wires 6b on the second layer on the wires 6a and 6c. Is wound.
[0028]
Since the three wires are wound in two layers in this manner, the length of the core can be reduced to about / compared to the case where the wires are wound in a single layer. Can be
[0029]
Further, in the above-mentioned wound type common mode choke coil 1, as shown in FIG. 2, the first-layer wires 6a and the wires 6b are alternately wound, and the second-layer wires 6c are connected to the wires 6a. It is wound on the middle of the wire 6b.
[0030]
Further, it is preferable that all the distances between the wires constituting the wires 6a, 6b, 6c are equal. That is, assuming that the centers of the respective cross sections of the wires 6a, 6b, and 6c in FIG. 3 are P, Q, and R, respectively, it is preferable that the triangle PQR be wound so as to form an equilateral triangle.
[0031]
Since the distances between the wires are all equal, when the wires 6a and 6b are connected, when the wires 6b and 6c are connected, and when the wires 6a and 6c are connected. Sometimes, the same normal mode impedance value is obtained. Further, the closer the distance between the wires, the greater the degree of coupling between the coils by the wires, so that a low normal mode impedance value is obtained.
[0032]
Accordingly, the normal mode impedance value between the two signal lines and the ground line becomes the same regardless of which of the wires 6a, 6b, and 6c of the wire-type common mode choke coil 1 is the ground line. The degree of freedom in designing a circuit on which the common mode choke coil 1 is mounted is improved. Further, since the normal mode impedance value is low, the characteristics of the wire-wound common mode choke coil 1 are improved.
[0033]
The step of winding the wire around the core in the manufacture of the above-mentioned wound type common mode choke coil 1 includes a step of firstly winding the wire 6a and the wire 6c as the first layer on the core 4; Subsequently, it is preferable that a wire 6b be wound as a second layer on the first layer. By doing so, the wire can be wound easily and accurately.
[0034]
The present invention is not limited to the above-described embodiment, and can be variously modified within the scope of the gist.
[0035]
For example, in the above-mentioned wound type common mode choke coil 1, the three wires are in contact with each other as shown in FIG. 3, but there may be a gap between the wires of the first layer. In the gap of the first layer, the size of the gap may be different between the gap where the wire 6b is provided at the upper part and the gap where the wire 6b is not provided.
[0036]
Further, in the wire-wound common mode choke coil 1, the diameters of the three wires are the same, but need not be the same. There is no limitation on the diameter of the wire.
[0037]
【The invention's effect】
As described above, the wire-wound common mode choke coil of the present invention includes a core having a core, and a wire-wound common mode choke coil in which three wires are wound around the core. Two of the wires are wound on the first layer on the core, and the other wire is wound on the second layer, so that the wire is wound on a single layer. Since the length of the core part can be reduced to about て as compared with the case where the parts are used, there is an effect that components can be downsized.
[0038]
In addition, two wires are alternately wound on the first layer, and the second layer wire is wound on the middle of the two wires, or In addition, since all the distances between the three wires are equal, the normal mode impedance value between the two signal lines and the ground line becomes the same regardless of which wire is the ground line, This has the effect of improving the degree of freedom in designing a circuit on which the above-mentioned wound type common mode choke coil is mounted. Further, the closer the distance between the wires, the greater the degree of coupling between the coils by the respective wires, so that the normal mode impedance value is reduced and the characteristics of the wound common mode choke coil are improved. .
[0039]
Further, a method of manufacturing a wound type common mode choke coil according to the present invention includes a method of manufacturing a wound type common mode choke coil including a core having a core portion, wherein three wires are wound around the core portion. A step of alternately winding two wires on the first layer on the surface of the core portion, and subsequently winding another wire on the second layer and the middle of the two wires. The effect of this step is that the wire can be wound easily and accurately.
[Brief description of the drawings]
FIG. 1 is a bottom view of a wound type common mode choke coil according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the wound common mode choke coil of FIG. 1 taken along a cutting plane AA ′.
FIG. 3 is an enlarged view of a main part of FIG. 2;
FIG. 4 is a bottom view of a conventional wound common mode choke coil.
FIG. 5 is a cross-sectional view of the wound common mode choke coil of FIG. 4 along a cut surface BB ′.
FIG. 6 is an equivalent circuit diagram of the wire-wound common mode choke coil shown in FIGS. 1 and 4;
FIG. 7 is a graph showing impedance characteristics of the wound type common mode choke coil of FIG. 4;
FIG. 8 is a circuit diagram of an impedance measurement circuit of the wound common mode choke coil of FIG. 4;
[Explanation of symbols]
1, 11 wound type common mode choke coil 2, 12 cores 3a, 3b, 13a, 13b flange 4, 14 cores 5a, 5b, 5c, 5d, 5e, 5f, 15a, 15b, 15c, 15d,
15e, 15f Terminal electrodes 6a, 6b, 6c, 16a, 16b, 16c Wire P Center of wire 6a section Q Center of wire 6b section R Center of wire 6c section 7, 17 Top plate 18 Measuring instrument

Claims (5)

巻芯部を有するコアと、前記巻芯部に巻回される3本のワイヤを有する巻線型コモンモードチョークコイルであって、前記ワイヤのうちの2本が前記巻芯部上の第一層目に巻回され、他の1本のワイヤが第二層目に巻回されることを特徴とする巻線型コモンモードチョークコイル。A wound common mode choke coil having a core having a core portion and three wires wound around the core portion, wherein two of the wires are in a first layer on the core portion. A wire type common mode choke coil, wherein the wire is wound around the eye and another wire is wound around the second layer. 前記第一層目に2本のワイヤが交互に巻回されるとともに、前記第二層目のワイヤが前記2本のワイヤの中間上に巻回されることを特徴とする、請求項1に記載の巻線型コモンモードチョークコイル。2. The method according to claim 1, wherein two wires are wound alternately on the first layer, and the wire on the second layer is wound on the middle of the two wires. 3. The described winding type common mode choke coil. 前記3本のワイヤにおいて各ワイヤ間の距離が全て等しいことを特徴とする請求項2に記載の巻線型コモンモードチョークコイル。The coil-type common mode choke coil according to claim 2, wherein a distance between the three wires is all equal. 巻芯部を有するコアと、前記巻芯部に巻回される3本のワイヤを有する巻線型コモンモードチョークコイルにおいて、前記巻芯部表面の第一層目に2本のワイヤが交互に巻回される工程と、続いてもう1本のワイヤが第二層目かつ前記2本のワイヤの中間上に巻回される工程を有する前記巻線型コモンモードチョークコイルの製造方法。In a winding type common mode choke coil having a core having a core portion and three wires wound around the core portion, two wires are alternately wound on a first layer on the surface of the core portion. A method of manufacturing the wire-wound common mode choke coil, comprising: a step of winding, and subsequently, a step of winding another wire on the second layer and on the middle of the two wires. 前記3本のワイヤにおいて各ワイヤ間の距離が全て等しくなるように前記第一層目及び第二層目のワイヤが巻回されることを特徴とする、請求項4に記載の巻線型コモンモードチョークコイルの製造方法。The wound common mode according to claim 4, wherein the first layer and the second layer are wound such that the distances between the three wires are all equal. Manufacturing method of choke coil.
JP2003058049A 2003-03-05 2003-03-05 Wound-type common mode choke coil and manufacturing method thereof Expired - Lifetime JP3952971B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003058049A JP3952971B2 (en) 2003-03-05 2003-03-05 Wound-type common mode choke coil and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003058049A JP3952971B2 (en) 2003-03-05 2003-03-05 Wound-type common mode choke coil and manufacturing method thereof

Publications (2)

Publication Number Publication Date
JP2004273490A true JP2004273490A (en) 2004-09-30
JP3952971B2 JP3952971B2 (en) 2007-08-01

Family

ID=33121254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003058049A Expired - Lifetime JP3952971B2 (en) 2003-03-05 2003-03-05 Wound-type common mode choke coil and manufacturing method thereof

Country Status (1)

Country Link
JP (1) JP3952971B2 (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007336383A (en) * 2006-06-16 2007-12-27 Mitsubishi Electric Corp Balanced transmission apparatus for power line communication
US7388449B2 (en) 2004-12-10 2008-06-17 Matsushita Electric Industrial Co., Ltd. Radiation noise suppression circuit for differential transmission line
WO2008096487A1 (en) * 2007-02-05 2008-08-14 Murata Manufacturing Co., Ltd. Winding type coil and its winding method
JP2008186996A (en) * 2007-01-30 2008-08-14 Tdk Corp Coil component
JP2009021558A (en) * 2007-06-14 2009-01-29 Tdk Corp Transformer component
JP2009021325A (en) * 2007-07-11 2009-01-29 Murata Mfg Co Ltd Winding type common mode choke coil
JP2009231797A (en) * 2008-02-29 2009-10-08 Tdk Corp Balun transformer
JP2009252845A (en) * 2008-04-02 2009-10-29 Tdk Corp Balloon transformer
JP2010093183A (en) * 2008-10-10 2010-04-22 Tdk Corp Balun transformer
JP2010093216A (en) * 2008-10-10 2010-04-22 Tdk Corp Coil component and method of manufacturing the same
JP2010093184A (en) * 2008-10-10 2010-04-22 Tdk Corp Balun transformer
JP2010108990A (en) * 2008-10-28 2010-05-13 Tdk Corp Balun transformer
US20100194517A1 (en) * 2007-08-01 2010-08-05 Manfred Karasek Current-Compensated Choke and Circuit Arrangement With a Current-Compensated Choke
JP2011082463A (en) * 2009-10-09 2011-04-21 Tdk Corp Coil component and manufacturing method thereof
JP2011146732A (en) * 2008-02-29 2011-07-28 Tdk Corp Balun transformer
CN103268804A (en) * 2013-05-10 2013-08-28 华为机器有限公司 Surface adhered type magnetic device
WO2015178263A1 (en) * 2014-05-22 2015-11-26 株式会社村田製作所 Multiple-wire winding method, multiple-wire winding device, and wound coil component
WO2015178264A1 (en) * 2014-05-22 2015-11-26 株式会社村田製作所 Multiple-wire winding method, multiple-wire winding device, and wound coil component
JP2016208505A (en) * 2015-04-23 2016-12-08 パナソニックIpマネジメント株式会社 Magnetic part and electric circuit
JP2017028496A (en) * 2015-07-22 2017-02-02 株式会社村田製作所 Noise filter mounting structure
JP2017045918A (en) * 2015-08-28 2017-03-02 株式会社村田製作所 Coil component
WO2017129629A1 (en) * 2016-01-26 2017-08-03 Iee International Electronics & Engineering S.A. Capacitive sensor device with emi-robust capacitive measurement circuit
US10714255B2 (en) 2014-10-17 2020-07-14 Murata Manufacturing Co., Ltd. Common mode choke coil
WO2023228640A1 (en) * 2022-05-24 2023-11-30 サンデン株式会社 Inverter device and electric compressor equipped therewith

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6614050B2 (en) 2016-07-01 2019-12-04 株式会社村田製作所 Common mode choke coil

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7388449B2 (en) 2004-12-10 2008-06-17 Matsushita Electric Industrial Co., Ltd. Radiation noise suppression circuit for differential transmission line
JP2007336383A (en) * 2006-06-16 2007-12-27 Mitsubishi Electric Corp Balanced transmission apparatus for power line communication
JP2008186996A (en) * 2007-01-30 2008-08-14 Tdk Corp Coil component
JP4591453B2 (en) * 2007-01-30 2010-12-01 Tdk株式会社 Pulse transformer
WO2008096487A1 (en) * 2007-02-05 2008-08-14 Murata Manufacturing Co., Ltd. Winding type coil and its winding method
US7932803B2 (en) 2007-02-05 2011-04-26 Murata Manufacturing Co., Ltd. Wire-wound type coil and winding method therefor
JPWO2008096487A1 (en) * 2007-02-05 2010-05-20 株式会社村田製作所 Winding type coil and winding method thereof
JP2009021558A (en) * 2007-06-14 2009-01-29 Tdk Corp Transformer component
JP4600519B2 (en) * 2007-06-14 2010-12-15 Tdk株式会社 Transformer parts
JP2009021325A (en) * 2007-07-11 2009-01-29 Murata Mfg Co Ltd Winding type common mode choke coil
US9305695B2 (en) * 2007-08-01 2016-04-05 Epcos Ag Current-compensated choke and circuit arrangement with a current-compensated choke
US20100194517A1 (en) * 2007-08-01 2010-08-05 Manfred Karasek Current-Compensated Choke and Circuit Arrangement With a Current-Compensated Choke
JP2011146732A (en) * 2008-02-29 2011-07-28 Tdk Corp Balun transformer
JP4708469B2 (en) * 2008-02-29 2011-06-22 Tdk株式会社 Balun Trans
JP2009231797A (en) * 2008-02-29 2009-10-08 Tdk Corp Balun transformer
US7791444B2 (en) 2008-02-29 2010-09-07 Tdk Corporation Balun transformer using a drum-shaped core
JP2009252845A (en) * 2008-04-02 2009-10-29 Tdk Corp Balloon transformer
JP2010093216A (en) * 2008-10-10 2010-04-22 Tdk Corp Coil component and method of manufacturing the same
JP2010093183A (en) * 2008-10-10 2010-04-22 Tdk Corp Balun transformer
JP2010093184A (en) * 2008-10-10 2010-04-22 Tdk Corp Balun transformer
JP2010108990A (en) * 2008-10-28 2010-05-13 Tdk Corp Balun transformer
JP2011082463A (en) * 2009-10-09 2011-04-21 Tdk Corp Coil component and manufacturing method thereof
CN103268804A (en) * 2013-05-10 2013-08-28 华为机器有限公司 Surface adhered type magnetic device
CN106463257A (en) * 2014-05-22 2017-02-22 株式会社村田制作所 Multiple-wire winding method, multiple-wire winding device, and wound coil component
JPWO2015178264A1 (en) * 2014-05-22 2017-04-20 株式会社村田製作所 Multi-wire winding method, multi-wire winding device, and wound-type coil component
TWI607461B (en) * 2014-05-22 2017-12-01 村田製作所股份有限公司 Multi-wire winding method, multi-wire winding device and coiled coil part
JPWO2015178263A1 (en) * 2014-05-22 2017-04-20 株式会社村田製作所 Multi-wire winding method, multi-wire winding device, and wound-type coil component
CN106463258A (en) * 2014-05-22 2017-02-22 株式会社村田制作所 Multiple-wire winding method, multiple-wire winding device, and wound coil component
WO2015178263A1 (en) * 2014-05-22 2015-11-26 株式会社村田製作所 Multiple-wire winding method, multiple-wire winding device, and wound coil component
WO2015178264A1 (en) * 2014-05-22 2015-11-26 株式会社村田製作所 Multiple-wire winding method, multiple-wire winding device, and wound coil component
US10714255B2 (en) 2014-10-17 2020-07-14 Murata Manufacturing Co., Ltd. Common mode choke coil
JP2016208505A (en) * 2015-04-23 2016-12-08 パナソニックIpマネジメント株式会社 Magnetic part and electric circuit
JP2017028496A (en) * 2015-07-22 2017-02-02 株式会社村田製作所 Noise filter mounting structure
US10784040B2 (en) 2015-07-22 2020-09-22 Murata Manufacturing Co., Ltd. Noise filter implementation structure
JP2017045918A (en) * 2015-08-28 2017-03-02 株式会社村田製作所 Coil component
WO2017129629A1 (en) * 2016-01-26 2017-08-03 Iee International Electronics & Engineering S.A. Capacitive sensor device with emi-robust capacitive measurement circuit
LU92961B1 (en) * 2016-01-26 2017-08-07 Iee Sa Capacitive sensor device with EMI-Robust capacitive measurement circuit
US10399526B2 (en) 2016-01-26 2019-09-03 Iee International Electronics & Engineering S.A. Capacitive sensor device with EMI-robust capacitive measurement circuit
WO2023228640A1 (en) * 2022-05-24 2023-11-30 サンデン株式会社 Inverter device and electric compressor equipped therewith

Also Published As

Publication number Publication date
JP3952971B2 (en) 2007-08-01

Similar Documents

Publication Publication Date Title
JP2004273490A (en) Wire-wound common mode choke coil and its manufacturing method
US11557427B2 (en) Coil component
JP5141659B2 (en) Coil component and manufacturing method thereof
JP5971231B2 (en) Common mode choke coil and manufacturing method thereof
TWI321328B (en)
JP6569653B2 (en) Wire-wound coil parts
JP2017183444A (en) Common mode filter
JP2003282333A (en) Coil-sealed dust core
US11705273B2 (en) Coil component
WO2016132666A1 (en) Common mode noise filter
JP2018107248A (en) Inductor component
JP2007042678A (en) Coil and filter circuit
KR20160014302A (en) Chip electronic component and board having the same mounted thereon
JP2002110428A (en) Wire-wound common mode choke coil
CN107112112B (en) Coil component
KR101761944B1 (en) Wire wound inductor
US20210304942A1 (en) Common mode noise filter
JP2019220622A (en) Coil component
JP5713232B2 (en) Noise filter
KR20170079183A (en) Coil Component
KR20170090800A (en) Coil electronic component
JP2009021325A (en) Winding type common mode choke coil
US11869704B2 (en) Coil device
KR20150139267A (en) Wire wound inductor
JP2005322776A (en) Coil component

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060315

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060411

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060609

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070410

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070423

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 3952971

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100511

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110511

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120511

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120511

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130511

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130511

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140511

Year of fee payment: 7

EXPY Cancellation because of completion of term