JP6218302B2 - choke coil - Google Patents

choke coil Download PDF

Info

Publication number
JP6218302B2
JP6218302B2 JP2012229532A JP2012229532A JP6218302B2 JP 6218302 B2 JP6218302 B2 JP 6218302B2 JP 2012229532 A JP2012229532 A JP 2012229532A JP 2012229532 A JP2012229532 A JP 2012229532A JP 6218302 B2 JP6218302 B2 JP 6218302B2
Authority
JP
Japan
Prior art keywords
coil
magnetic path
closed magnetic
core
cylindrical 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.)
Active
Application number
JP2012229532A
Other languages
Japanese (ja)
Other versions
JP2014082342A (en
Inventor
義孝 齋藤
義孝 齋藤
道隆 板谷
道隆 板谷
早坂　秀一
秀一 早坂
公樹 原田
公樹 原田
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.)
Tokin Corp
Original Assignee
Tokin Corp
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 Tokin Corp filed Critical Tokin Corp
Priority to JP2012229532A priority Critical patent/JP6218302B2/en
Publication of JP2014082342A publication Critical patent/JP2014082342A/en
Application granted granted Critical
Publication of JP6218302B2 publication Critical patent/JP6218302B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)
  • Coils Or Transformers For Communication (AREA)

Description

本発明は、インダクタンスによりノイズを抑制するチョークコイルに関する。   The present invention relates to a choke coil that suppresses noise by inductance.

電気的ノイズ対策部品の分野において、互いに磁気絶縁された複数のコイルを集積化したチョークコイルについて検討がなされている。   In the field of electrical noise countermeasure parts, a choke coil in which a plurality of coils magnetically insulated from each other are integrated has been studied.

例えば特許文献１には、金属からなる遮蔽部材によりコイル間の磁気的な分離のほかに、静電的な分離を図る構成が開示されている。   For example, Patent Document 1 discloses a configuration in which electrostatic separation is achieved in addition to magnetic separation between coils by a shielding member made of metal.

特開２００６−１８６６２０号公報JP 2006-186620 A

特許文献１のように金属からなる遮蔽部材を用いるためには、複数の軟磁性コアの間に遮蔽部材を挟み込んで接着材などにより固定する余分な工程が必要となるという課題がある。   In order to use a shielding member made of metal as in Patent Document 1, there is a problem that an extra step of sandwiching the shielding member between a plurality of soft magnetic cores and fixing with an adhesive or the like is required.

さらに、固定するための接着剤等の応力により、ビラリ効果（逆磁歪効果）に起因して軟磁性コアが特性変化を起こし、チョークコイルの特性が低下する場合があるという課題がある。   Furthermore, due to stress such as an adhesive for fixing, there is a problem that the characteristic of the soft magnetic core may change due to the billiary effect (inverse magnetostrictive effect), and the characteristics of the choke coil may deteriorate.

従って本発明の目的は、良好な特性を得るために、遮蔽部材を用いずにコイル間の磁気分離を行うことができるチョークコイルを提供することにある。   Therefore, an object of the present invention is to provide a choke coil that can perform magnetic separation between coils without using a shielding member in order to obtain good characteristics.

本発明は、第１の閉磁路と第２の閉磁路を有し、前記第１の閉磁路における各々の脚部を繋ぐ部分と前記第２の閉磁路の外脚部を共有する連結部を有する一体成型された軟磁性コアと、第１のコイルと、第２のコイルを備え、前記第１のコイルは前記第１の閉磁路の中芯部を周回するよう構成され、前記第２のコイルは前記第２の閉磁路の中芯部を周回するよう構成され、前記第１のコイルと前記第２のコイルの巻き軸は互いに直交し、前記第１のコイルの巻き軸は、前記第２のコイルの中心部に向いていることを特徴とするチョークコイルにより上記課題を解決する。 The present invention, have a first closed magnetic path and a second closed magnetic path, the connecting portion to share the outer legs of the first of the with each of the portion connecting the legs of the closed magnetic circuit a second closed magnetic circuit a soft magnetic core which is integrally molded to Yes, and the first coil, a second coil, the first coil is configured to surround the core portion in said first closed magnetic path, the second The coil is configured to circulate around the core of the second closed magnetic path, the winding axes of the first coil and the second coil are orthogonal to each other, and the winding axis of the first coil is the The above-described problem is solved by a choke coil that is directed to the center of the second coil.

さらに、前記第１のコイルは第１の円筒ボビンを有し、前記第２のコイルは第２の円筒ボビンを有し、前記第１の円筒ボビンの外径は第２の円筒ボビンの巻き軸方向の長さに等しいことが好ましい。   Furthermore, the first coil has a first cylindrical bobbin, the second coil has a second cylindrical bobbin, and the outer diameter of the first cylindrical bobbin is the winding axis of the second cylindrical bobbin. Preferably equal to the length in the direction.

また、前記第１の円筒ボビンの外径と巻き軸方向の長さが等しく、前記第２の円筒ボビンの外径と巻き軸方向の長さが等しければなお良い。   The outer diameter of the first cylindrical bobbin is equal to the length in the winding axis direction, and the outer diameter of the second cylindrical bobbin is equal to the length in the winding axis direction.

また、前記中芯部の磁路に垂直な断面の断面積よりも、連結部の磁路に垂直な断面積の方が大きいことが好ましい。
Moreover, it is preferable that the cross-sectional area perpendicular to the magnetic path of the connecting portion is larger than the cross-sectional area of the cross-section perpendicular to the magnetic path of the core portion.

本発明によって、遮蔽部材を用いずにコイル間の磁気分離を行うことができるチョークコイルを提供することが可能となる。   According to the present invention, it is possible to provide a choke coil that can perform magnetic separation between coils without using a shielding member.

本発明における実施形態１のチョークコイルを示す正面図である。It is a front view which shows the choke coil of Embodiment 1 in this invention. 本発明における実施形態２のチョークコイルを示す正面図である。It is a front view which shows the choke coil of Embodiment 2 in this invention. 本発明における実施形態３のチョークコイルを示す正面図である。It is a front view which shows the choke coil of Embodiment 3 in this invention. 本発明における実施形態３のチョークコイルを用いたノイズフィルタを示す回路図である。It is a circuit diagram which shows the noise filter using the choke coil of Embodiment 3 in this invention. 本発明における実施形態４のチョークコイルを示す正面図である。It is a front view which shows the choke coil of Embodiment 4 in this invention.

本発明の実施形態について、図と共に説明する。   An embodiment of the present invention will be described with reference to the drawings.

（実施形態１）
図１は、本発明における実施形態１のチョークコイルを示す正面図である。 (Embodiment 1)
FIG. 1 is a front view showing a choke coil according to a first embodiment of the present invention.

一体成型により作成された軟磁性コア１は、磁気ギャップを有しておらず、中芯１１１、外脚１１２、連結部１００、１１３により日の字型に構成される第１の閉磁路と、中芯１２１、外脚１２２、連結部１００、１２３により日の字型に構成される第２の閉磁路を有している。   The soft magnetic core 1 produced by integral molding does not have a magnetic gap, and includes a first closed magnetic path configured in a Japanese character shape by the core 111, the outer leg 112, and the connecting portions 100 and 113; The center core 121, the outer leg 122, and the connecting portions 100 and 123 have a second closed magnetic path configured in a Japanese character shape.

さらに、中芯１１１には円筒ボビン２１を有するコイル３１が巻き回され、中芯１２１には円筒ボビン２２を有するコイル３２が巻き回されている。   Further, a coil 31 having a cylindrical bobbin 21 is wound around the center core 111, and a coil 32 having a cylindrical bobbin 22 is wound around the center core 121.

ここで、円筒ボビン２１、２２を歯車付の分割円筒ボビンとすれば巻線工程を効率化できるため、望ましい。   Here, if the cylindrical bobbins 21 and 22 are divided cylindrical bobbins with gears, the winding process can be made efficient, which is desirable.

コイル３１への通電により生じる磁束は、主に第１の閉磁路内にあり、コイル３２への通電により生じる磁束は、主に第２の閉磁路内にある。   The magnetic flux generated by energizing the coil 31 is mainly in the first closed magnetic circuit, and the magnetic flux generated by energizing the coil 32 is mainly in the second closed magnetic circuit.

ここで、第１の閉磁路と第２の閉磁路は連結部１００を共有しているため、連結部１００を介して第１の閉磁路と第２の閉磁路の磁束が相互に干渉することもあり得るが、コイル３１の巻き軸とコイル３２の巻き軸が互いに直交し、コイル３１の巻き軸がコイル３２の中心部に向くよう構成することで、コイル３１から生じ、コイル３２の中芯１２１へ両端から流れ込む磁束は互いに逆向きであるために相殺され、コイル３２から生じ、コイル３１の中芯１１１の両端から流れ込む磁束も同様に相殺されることから、結合係数が小さくなり、コイル３１とコイル３２の間が磁気分離される。また、コイル３１から生じ、中芯１２１両端から流れ込む磁束の相殺をより確実なものとするためには、２つの外脚１１２の磁路に垂直な断面積を等しくすることが望ましい。同様に、コイル３２から生じ、中芯１１１両端から流れ込む磁束の相殺をより確実なものとするためには、中芯１２１と、外脚１２２若しくは連結部１００との間の連結部１２３の磁路に垂直な断面積を均一なものとすることが望ましい。   Here, since the first closed magnetic path and the second closed magnetic path share the connecting portion 100, the magnetic fluxes of the first closed magnetic path and the second closed magnetic path interfere with each other via the connecting portion 100. However, the winding axis of the coil 31 and the winding axis of the coil 32 are orthogonal to each other, and the winding axis of the coil 31 is directed toward the center of the coil 32. Since the magnetic fluxes flowing from both ends into 121 are opposite to each other, they cancel each other, and the magnetic fluxes generated from the coil 32 and flowing from both ends of the core 111 of the coil 31 are also canceled in the same manner. And the coil 32 are magnetically separated. In order to more reliably cancel the magnetic flux generated from the coil 31 and flowing from both ends of the core 121, it is desirable to make the cross-sectional areas perpendicular to the magnetic paths of the two outer legs 112 equal. Similarly, in order to more reliably cancel the magnetic flux generated from the coil 32 and flowing from both ends of the core 111, the magnetic path of the connecting portion 123 between the core 121 and the outer leg 122 or the connecting portion 100. It is desirable that the cross-sectional area perpendicular to is uniform.

さらに、連結部１００の磁路に直交する断面の断面積を、中芯１１１、１２１の磁路に直交する断面の断面積よりも広くすることで、第１の閉磁路と第２の閉磁路からの磁束による磁気飽和を抑えることができると共に、第１の閉磁路と第２の閉磁路からの磁束が干渉することも抑制されるため、コイル３１とコイル３２の磁気分離をより確実に行うこととなり、望ましい。   Furthermore, by making the cross-sectional area of the cross section orthogonal to the magnetic path of the coupling part 100 wider than the cross-sectional area of the cross section orthogonal to the magnetic path of the cores 111 and 121, the first closed magnetic path and the second closed magnetic path In addition, the magnetic saturation due to the magnetic flux from the magnetic flux can be suppressed, and the magnetic flux from the first closed magnetic path and the second closed magnetic path are also prevented from interfering with each other. This is desirable.

また、互いに磁気分離されたコイル３１とコイル３２とすることで、２つの互いに磁気干渉しないコイルを有するチョークコイルとすることができ、２つのチョークコイルを実装する場合よりも回路部品としての実装面積を削減することができる。   Further, by using the coil 31 and the coil 32 that are magnetically separated from each other, a choke coil having two coils that do not interfere with each other can be obtained, and the mounting area as a circuit component can be increased as compared with the case where two choke coils are mounted. Can be reduced.

すなわち本発明は、連結部１００を共有する第１の閉磁路と第２の閉磁路を有する一体成型された軟磁性コア１と、第１のコイル３１と、第２のコイル３１を備え、第１のコイル３１は第１の閉磁路の中芯部を周回するよう構成され、第２のコイル３２は第２の閉磁路の中芯部を周回するよう構成され、第１のコイル３１と第２のコイル３２の巻き軸は互いに直交し、第１のコイル３１の巻き軸は、第２のコイル３２の中心部に向いているチョークコイルの実施形態を取り得る。ここで、コイル３２の中心部とは厳密な中心点を意味するものではなく、コイル３１の巻き軸が向くことで必要な磁気分離が得られる程度中心に近ければ、中心部に含まれる。   That is, the present invention includes an integrally molded soft magnetic core 1 having a first closed magnetic path and a second closed magnetic path that share the connecting portion 100, a first coil 31, and a second coil 31. The first coil 31 is configured to circulate around the central portion of the first closed magnetic path, and the second coil 32 is configured to circulate around the central portion of the second closed magnetic path. The winding axis of the second coil 32 may be orthogonal to each other, and the winding axis of the first coil 31 may be an embodiment of a choke coil that faces the center of the second coil 32. Here, the central portion of the coil 32 does not mean a strict central point, and is included in the central portion if it is close to the center so that necessary magnetic separation can be obtained by the winding axis of the coil 31 being directed.

ここで、円筒ボビン２１の巻き軸方向の長さをＬ１、外径をＷ１、円筒ボビン３２の巻き軸方向の長さをＬ２、外径をＷ２として、本実施形態におけるチョークコイルを小型化する上での望ましい条件を特定する。   Here, the length of the cylindrical bobbin 21 in the winding axis direction is L1, the outer diameter is W1, the length of the cylindrical bobbin 32 in the winding axis direction is L2, and the outer diameter is W2. Identify the desired conditions above.

一方、軟磁性コア１の外形を長方形とすることで軟磁性コアの金型を単純化でき、回路部品の配置を設計する上での利便性からも望ましい。   On the other hand, by making the outer shape of the soft magnetic core 1 rectangular, the mold of the soft magnetic core can be simplified, which is desirable from the viewpoint of convenience in designing the arrangement of circuit components.

従って、軟磁性コア１の外形を長方形とする場合、コイル３１、３２の巻き数及び巻線断面積に起因する直流抵抗を低減させる上では、コイル３１、３２の体積を最大限確保するためにＷ１とＬ２の寸法を等しくすることが望ましい。   Accordingly, when the outer shape of the soft magnetic core 1 is rectangular, in order to reduce the DC resistance due to the number of turns of the coils 31 and 32 and the cross-sectional area of the winding, in order to ensure the maximum volume of the coils 31 and 32. It is desirable to make the dimensions of W1 and L2 equal.

また、コイル３１、３２の外径を等しく、すなわちＷ１とＷ２の寸法を等しくすることで、例えばコイル３１、３２の巻き軸が回路基板面と平行となるように実装した場合の高さを低く抑えることができるため、望ましい。   Further, by making the outer diameters of the coils 31 and 32 equal, that is, by making the dimensions of W1 and W2 equal, for example, the height when the winding axes of the coils 31 and 32 are mounted so as to be parallel to the circuit board surface is reduced. This is desirable because it can be suppressed.

（実施形態２）
図２は、本発明における実施形態２のチョークコイルを示す正面図である。 (Embodiment 2)
FIG. 2 is a front view showing the choke coil according to the second embodiment of the present invention.

実施形態１における図１の外脚１２２を省いているが、中芯１２１、連結部１００、１２３により第２の閉磁路をロの字型に構成できるため、外脚１２２を省略しても良いことになる。   Although the outer leg 122 of FIG. 1 in Embodiment 1 is omitted, the outer leg 122 may be omitted because the second closed magnetic path can be configured in a square shape by the core 121 and the connecting portions 100 and 123. It will be.

（実施形態３）
図３は、本発明における実施形態３のチョークコイルを示す正面図である。 (Embodiment 3)
FIG. 3 is a front view showing a choke coil according to a third embodiment of the present invention.

実施形態２における図２のチョークコイルとは、円筒ボビン２１に巻き回されるのが２つのコイル３１１、３１２であり、コイル３１１、３１２の間には絶縁仕切部２１１が設けられ、円筒ボビン２２に巻き回されるのが２つのコイル３２１、３２２であり、コイル３２１、３２２の間には絶縁仕切部２２１が設けられている点が異なる。   In the second embodiment, the choke coil of FIG. 2 includes two coils 311 and 312 wound around the cylindrical bobbin 21, and an insulating partition 211 is provided between the coils 311 and 312. Two coils 321 and 322 are wound around, and the difference is that an insulating partition 221 is provided between the coils 321 and 322.

コイル３１１とコイル３１２を、互いに同じ巻き数であり、互いに等しい電流を通電した際に第１の閉磁路内で互いに逆方向の磁束が生じ打ち消しあうよう構成することで、コモンモードチョークコイルを構成することができる。   The coil 311 and the coil 312 have the same number of turns, and are configured such that magnetic fluxes in opposite directions are generated and cancel each other in the first closed magnetic path when the same currents are applied, thereby forming a common mode choke coil can do.

また、同様に、コイル３２１とコイル３２２を、互いに同じ巻き数であり、互いに等しい電流を通電した際に第２の閉磁路内で互いに逆方向の磁束が生じ打ち消しあうよう構成することで、コモンモードチョークコイルを構成することができる。   Similarly, the coil 321 and the coil 322 have the same number of turns and are configured so that magnetic fluxes in opposite directions are generated and cancel each other in the second closed magnetic path when the same current is applied. A mode choke coil can be configured.

従って、実施形態１と同様に、２つの互いに磁気干渉しないコモンモードチョークコイルを有する構成とすることができ、２つのコモンモードチョークコイルを実装する場合よりも回路部品としての実装面積を削減することができる。   Accordingly, similarly to the first embodiment, it is possible to adopt a configuration having two common mode choke coils that do not magnetically interfere with each other, and to reduce the mounting area as a circuit component compared to the case where two common mode choke coils are mounted. Can do.

図４は、本発明における実施形態３のチョークコイルを用いたノイズフィルタを示す回路図である。   FIG. 4 is a circuit diagram showing a noise filter using the choke coil according to the third embodiment of the present invention.

交流電源４１からコイル３１１、３１２、コイル３２１、３２２を経由して負荷４２に電力が供給される構成となっている。   Electric power is supplied from the AC power supply 41 to the load 42 via the coils 311 and 312 and the coils 321 and 322.

コイル３１１、３１２、及びコイル３２１、３２２はコモンモードチョークコイルを構成している。   The coils 311 and 312 and the coils 321 and 322 constitute a common mode choke coil.

また、コイル３１１とコイル３２１の間にはバイパスコンデンサＣｙ１の一端が導電接続され、バイパスコンデンサＣｙ１の他端は接地されている。   In addition, one end of the bypass capacitor Cy1 is conductively connected between the coil 311 and the coil 321 and the other end of the bypass capacitor Cy1 is grounded.

同様に、コイル３１２とコイル３２２の間にはバイパスコンデンサＣｙ２の一端が導電接続され、バイパスコンデンサＣｙ２の他端は接地されている。   Similarly, one end of the bypass capacitor Cy2 is conductively connected between the coil 312 and the coil 322, and the other end of the bypass capacitor Cy2 is grounded.

このように構成することで、交流電源４１で発生したコモンモードノイズはコモンモードチョークコイルとしてのコイル３１１、３１２、及びコイル３２１、３２２により除かれ、ノーマルモードノイズはバイパスコンデンサＣｙ１、Ｃｙ２により除かれることとなる。   With this configuration, common mode noise generated in the AC power supply 41 is removed by the coils 311 and 312 and the coils 321 and 322 as common mode choke coils, and normal mode noise is removed by the bypass capacitors Cy1 and Cy2. It will be.

（実施形態４）
図５は、本発明における実施形態４のチョークコイルを示す正面図である。 (Embodiment 4)
FIG. 5 is a front view showing a choke coil according to a fourth embodiment of the present invention.

実施形態２における図２のチョークコイルとは、一体成型された軟磁性コア１が連結部１０１、１３３、中芯１３１が追加されている構成である点と、円筒ボビン２３を有するコイル３３が追加されている点が異なる。   The choke coil of FIG. 2 in the second embodiment has a configuration in which the integrally formed soft magnetic core 1 is added with the connecting portions 101 and 133 and the core 131 and the coil 33 having the cylindrical bobbin 23 is added. Is different.

連結部１０１、１３３、中芯１３１により第３の閉磁路をロの字型に構成できる。   The third closed magnetic circuit can be formed in a square shape by the connecting portions 101 and 133 and the core 131.

この場合、実施形態１と同様に、第１の閉磁路と第３の閉磁路は連結部１０１を共有しているため、連結部１０１を介して第１の閉磁路と第３の閉磁路の磁束が相互に入り込むこともあり得るが、コイル３１の巻き軸とコイル３３の巻き軸が互いに直交し、コイル３１の巻き軸がコイル３３の中心部に向くよう構成することで、コイル３１とコイル３３の磁束が相互に入り込むことで、結合係数を最小限におさえることができ、磁気分離を行うことができる。   In this case, as in the first embodiment, the first closed magnetic path and the third closed magnetic path share the connecting portion 101. Therefore, the first closed magnetic path and the third closed magnetic path are connected via the connecting portion 101. Although the magnetic flux may enter into each other, the coil 31 and the coil 33 are configured such that the winding axis of the coil 31 and the winding axis of the coil 33 are orthogonal to each other and the winding axis of the coil 31 faces the center of the coil 33. Since the 33 magnetic fluxes enter each other, the coupling coefficient can be minimized and magnetic separation can be performed.

なお、コイル３２とコイル３３の巻き軸は直交していないが、間に連結部１００、１０１、及び第１の閉磁路を挟んでいるため、ある程度磁気分離を行うことができる。特にコイル３１への通電により外脚１１２が磁気飽和を起こさせることで、コイル３２とコイル３３の間の磁気分離をより確実なものとすることができる。   Although the winding axes of the coil 32 and the coil 33 are not orthogonal to each other, the coupling portions 100 and 101 and the first closed magnetic path are sandwiched therebetween, so that magnetic separation can be performed to some extent. In particular, by causing the outer legs 112 to be magnetically saturated by energization of the coil 31, the magnetic separation between the coil 32 and the coil 33 can be made more reliable.

さらに、連結部１０１の磁路に直交する断面の断面積を、中芯１１１、１３１の磁路に直交する断面の断面積よりも広くすることで、第１の閉磁路と第３の閉磁路からの磁束による磁気飽和を抑えることができると共に、第１の閉磁路と第３の閉磁路からの磁束が干渉することも抑制されるため、コイル３１とコイル３３の磁気分離をより確実に行うこととなり、望ましい。   Furthermore, by making the cross-sectional area of the cross section orthogonal to the magnetic path of the connecting portion 101 wider than the cross-sectional area of the cross section orthogonal to the magnetic path of the cores 111 and 131, the first closed magnetic path and the third closed magnetic path Magnetic saturation due to the magnetic flux from the magnetic flux can be suppressed, and interference of the magnetic flux from the first closed magnetic path and the third closed magnetic path is also suppressed, so that the magnetic separation of the coil 31 and the coil 33 is more reliably performed. This is desirable.

また、互いに磁気分離されたコイル３１、３２、３３とすることで、互いに磁気干渉しないコイルを有するチョークコイルとすることができ、３つのチョークコイルを実装する場合よりも回路部品としての実装面積を削減することができる。   Further, by using the coils 31, 32, 33 magnetically separated from each other, a choke coil having coils that do not magnetically interfere with each other can be obtained, and the mounting area as a circuit component can be reduced as compared with the case where three choke coils are mounted. Can be reduced.

なお、コイル３１、３３は、各々実施形態３と同様にコモンモードチョークコイルとして構成してもよく、第２の閉磁路と第３の閉磁路を実施形態１と同様に日の字型の構成としてもよい。   The coils 31 and 33 may each be configured as a common mode choke coil as in the third embodiment, and the second closed magnetic path and the third closed magnetic path are configured in a Japanese character shape as in the first embodiment. It is good.

（実施例１）
実施形態２における図２の構成でチョークコイルを構成した。コイル３１、３２への通電によるインダクタンスを共に６．５ｍＨとした。 Example 1
A choke coil was configured with the configuration of FIG. Both inductances due to energization of the coils 31 and 32 were set to 6.5 mH.

一方のコイル両端に交流電圧を印加し、他方のコイル両端を開放して誘導電圧を測定することでコイル３１、３２間の結合係数を測定したところ、３．０×１０−４となり、充分に磁気分離されていることが確認された。 When the coupling coefficient between the coils 31 and 32 was measured by applying an AC voltage to both ends of one coil and opening the other coil and measuring the induced voltage, it was 3.0 × 10 −4 . Magnetic separation was confirmed.

（実施例２）
実施形態３における図３、図４の構成でバイパスコンデンサ及びコモンモードチョークコイルを構成した。 (Example 2)
A bypass capacitor and a common mode choke coil were configured with the configurations of FIGS. 3 and 4 in the third embodiment.

コイル３１１、３１２、３２１、３２２への通電によるインダクタンスを全て６．５ｍＨとし、バイパスコンデンサＣｙ１、Ｃｙ２を４．７ｎＦとしてノイズフィルタの減衰量を測定した。   The inductance of the noise filter was measured by setting all the inductances due to energization to the coils 311, 312, 321, and 322 to 6.5 mH and the bypass capacitors Cy1 and Cy2 to 4.7 nF.

交流電源４１から負荷４２への信号に３００ｋＨｚのコモンモードノイズ及びノーマルモードノイズを加えたところ、いずれも−８０ｄＢまで減衰した。   When 300 kHz common mode noise and normal mode noise were added to the signal from the AC power supply 41 to the load 42, both attenuated to -80 dB.

軟磁性コア １
円筒ボビン ２１、２２、２３
コイル ３１、３２、３３、３１１、３１２、３２１、３２２
交流電源 ４１
負荷 ４２
連結部 １００、１０１、１１３、１２３、１３３
中芯 １１１、１２１、１３１
外脚 １１２、１２２、
絶縁仕切部 ２１１、２２１
長さ Ｌ１、Ｌ２
幅 Ｗ１、Ｗ２
バイパスコンデンサ Ｃｙ１、Ｃｙ２ Soft magnetic core 1
Cylindrical bobbins 21, 22, 23
Coil 31, 32, 33, 311, 312, 321, 322
AC power supply 41
Load 42
Connecting part 100, 101, 113, 123, 133
Center core 111, 121, 131
Outer legs 112, 122,
Insulation partition 211, 221
Length L1, L2
Width W1, W2
Bypass capacitors Cy1, Cy2

Claims (4)

第１の閉磁路と第２の閉磁路を有し、前記第１の閉磁路は中芯と、２つの外脚と、前記中芯と前記２つの外脚を繋ぐ２つの連結部により構成される日の字型の形状を備え、前記第２の閉磁路は前記第１の閉磁路と同形状の日の字型、または中芯と３つの連結部により構成されるロの字型の形状を備え、前記第１の閉磁路の一方の連結部と、前記第２の閉磁路の中芯と平行な連結部を共有する一体成型された軟磁性コアと、
第１のコイルと、
第２のコイルを備え、
前記第１のコイルは前記第１の閉磁路の中芯部を周回するよう構成され、
前記第２のコイルは前記第２の閉磁路の中芯部を周回するよう構成され、
前記第１のコイルと前記第２のコイルの巻き軸は互いに直交し、
前記第１のコイルの巻き軸は、前記第２のコイルの中心部に向いていることを特徴とするチョークコイル。 A first closed magnetic path and a second closed magnetic path are provided, and the first closed magnetic path is configured by a core, two outer legs, and two connecting portions that connect the core and the two outer legs. The second closed magnetic path has the same shape as the first closed magnetic path, or the B-shaped shape formed by the center and the three connecting portions. the provided, and the one connecting part of the first closed magnetic path, and a soft magnetic core which is integrally molded to share core and parallel connection unit in said second closed magnetic path,
A first coil;
Comprising a second coil;
The first coil is configured to circulate around a core portion of the first closed magnetic path;
The second coil is configured to circulate around a core portion of the second closed magnetic path;
The winding axes of the first coil and the second coil are orthogonal to each other,
The choke coil according to claim 1, wherein a winding axis of the first coil is directed to a center portion of the second coil. 前記第１のコイルは第１の円筒ボビンを有し、
前記第２のコイルは第２の円筒ボビンを有し、
前記第１の円筒ボビンの外径は第２の円筒ボビンの巻き軸方向の長さに等しいことを特徴とする請求項１に記載のチョークコイル。 The first coil has a first cylindrical bobbin;
The second coil has a second cylindrical bobbin;
2. The choke coil according to claim 1, wherein an outer diameter of the first cylindrical bobbin is equal to a length of the second cylindrical bobbin in a winding axis direction. 前記第１の円筒ボビンの外径と巻き軸方向の長さが等しく、
前記第２の円筒ボビンの外径と巻き軸方向の長さが等しいことを特徴とする請求項２に記載のチョークコイル。 The outer diameter of the first cylindrical bobbin is equal to the length in the winding axis direction,
The choke coil according to claim 2, wherein an outer diameter of the second cylindrical bobbin is equal to a length in a winding axis direction. 前記中芯部の磁路に垂直な断面の断面積よりも、
前記連結部の磁路に垂直な断面積の方が大きいことを特徴とする請求項１から請求項３のいずれかに記載のチョークコイル。 Than the cross-sectional area of the cross section perpendicular to the magnetic path of the core portion,
The choke coil according to any one of claims 1 to 3, wherein a cross-sectional area perpendicular to the magnetic path of the connecting portion is larger.
JP2012229532A 2012-10-17 2012-10-17 choke coil Active JP6218302B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012229532A JP6218302B2 (en) 2012-10-17 2012-10-17 choke coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012229532A JP6218302B2 (en) 2012-10-17 2012-10-17 choke coil

Publications (2)

Publication Number Publication Date
JP2014082342A JP2014082342A (en) 2014-05-08
JP6218302B2 true JP6218302B2 (en) 2017-10-25

Family

ID=50786269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012229532A Active JP6218302B2 (en) 2012-10-17 2012-10-17 choke coil

Country Status (1)

Country Link
JP (1) JP6218302B2 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6147605A (en) * 1984-08-14 1986-03-08 Toshiba Corp Inductance apparatus
JP2003198728A (en) * 2001-12-25 2003-07-11 Matsushita Electric Ind Co Ltd Multi-line terminating device
JP2006222387A (en) * 2005-02-14 2006-08-24 Toshiba Corp Choke coil unit
JP2008021878A (en) * 2006-07-13 2008-01-31 Sumida Corporation Composite magnetic components
JP2010016234A (en) * 2008-07-04 2010-01-21 Hitachi Ferrite Electronics Ltd Choke coil for interleave-controlled power factor correction circuit

Also Published As

Publication number Publication date
JP2014082342A (en) 2014-05-08

Similar Documents

Publication Publication Date Title
US6617950B2 (en) Common mode/differential mode choke
JP5940504B2 (en) Coil parts
US7446642B2 (en) Inductor
JP3814776B2 (en) Common mode choke coil
EP3038117B1 (en) Common mode choke coil
JP2016207941A (en) Coil component
JP5713232B2 (en) Noise filter
JP2006100465A (en) Coil and filter circuit using it
JP7251279B2 (en) coil parts
JP6218302B2 (en) choke coil
JP4363148B2 (en) Common mode noise filter
JPH0613120U (en) Noise prevention choke coil
JP5189637B2 (en) Coil parts and power supply circuit using the same
JP6059458B2 (en) choke coil
KR101610337B1 (en) Coil component and manufacturing method there of
JP7126567B2 (en) Choke coil and noise filter using it
JP2013168476A (en) Common mode choke coil
WO2016163084A1 (en) Reactor
JP6167269B2 (en) Reactor
JPH05121255A (en) Noise filter
JP6495807B2 (en) Common mode choke coil
JP2001167935A (en) Choke coil
JP2019213186A (en) Electronic component and electronic control unit
JP2010219193A (en) Inductance element, and noise filter
JP2019012760A (en) Inductance element and LC filter

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20151001

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20151001

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20160108

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20160818

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20160824

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20161019

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170208

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170406

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: 20170920

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20170925

R150 Certificate of patent or registration of utility model

Ref document number: 6218302

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250