JP4343871B2 - Coil parts - Google Patents

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JP4343871B2
JP4343871B2 JP2005130262A JP2005130262A JP4343871B2 JP 4343871 B2 JP4343871 B2 JP 4343871B2 JP 2005130262 A JP2005130262 A JP 2005130262A JP 2005130262 A JP2005130262 A JP 2005130262A JP 4343871 B2 JP4343871 B2 JP 4343871B2
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core
winding
windings
lead
drum
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JP2006310487A (en
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真寿 保田
鈴木  寛
一三 小林
佐々木  秀樹
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TDK Corp
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TDK Corp
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Description

本発明は、電子機器等に用いられるコイル部品に関するものである。   The present invention relates to a coil component used for an electronic device or the like.

従来のコイル部品としては、例えば特許文献1に記載されているようなコモンモードチョークコイルが知られている。この公報に記載のコイル部品は、巻芯部と、巻芯部の両端に一体的に設けられた1対の鍔部と、巻芯部に巻回形成された2本の巻線とを有している。これらの巻線は、巻芯部の中心軸に沿う方向に並んだ状態で、巻芯部を中心とした同心円状に重ね巻きされている。
特開2004−179314号公報
As a conventional coil component, for example, a common mode choke coil as described in Patent Document 1 is known. The coil component described in this publication has a winding core, a pair of flanges integrally provided at both ends of the winding core, and two windings wound around the winding core. is doing. These windings are wound in a concentric manner around the core part in a state of being aligned in a direction along the central axis of the core part.
JP 2004-179314 A

ところで、上記のようなコモンモードチョークコイルでは、2本の巻線の引き出し部の結合係数に応じてインピーダンス(インダクタンス)が変わり、各巻線の引き出し部同士が近接した状態で引き出されると、結合係数が高くなり、インピーダンスが高くなる。コイル部品のインピーダンス特性は、用途に応じて決まるものであるため、容易に調整可能であることが望ましい。   By the way, in the common mode choke coil as described above, when the impedance (inductance) changes according to the coupling coefficient of the lead portions of the two windings and the lead portions of the windings are drawn close to each other, the coupling coefficient Becomes higher and the impedance becomes higher. Since the impedance characteristic of the coil component is determined according to the application, it is desirable that the coil component can be easily adjusted.

しかし、上記従来技術においては、2本の巻線のうち1本の巻線の引き出し部は、内側の層から引き出されているため自由に動かすことができず、コイル部品のインピーダンス特性を調整することが困難である。その結果、要求されている用途に対処したコイル部品が得られない場合がある。   However, in the above-described prior art, the lead portion of one of the two windings is drawn from the inner layer and cannot be moved freely, and adjusts the impedance characteristics of the coil component. Is difficult. As a result, there may be a case where a coil component for the required application cannot be obtained.

本発明の目的は、インピーダンス特性の調整を容易に且つ確実に行うことができるコイル部品を提供することである。   An object of the present invention is to provide a coil component capable of easily and reliably adjusting impedance characteristics.

本発明のコイル部品は、巻芯部を有するコア部材と、巻芯部に巻回された複数本の巻線と、コア部材に設けられ、各巻線の両端の引き出し部とそれぞれ電気的に接続される複数の端子電極とを備え、複数本の巻線は、巻芯部の軸芯方向に並んだ状態で、引き出し部が最外層に位置するように巻芯部の軸芯に垂直な方向に複数層巻回されてなり、各巻線の引き出し部は全て最外層から引き出されており、コア部材は、略正方形状を有し、コア部材における4つの角部を含む部位には切り欠き部がそれぞれ形成されており、各端子電極は、コア部材の側壁を上下から挟み込むように取り付けられた断面コの字状の電極本体部と、電極本体部と一体的に形成された継線部とを有し、継線部は、コア部材の外形寸法内に収まるように切り欠き部に配置されており、最外層から引き出された各巻線の引き出し部は、巻芯部に対応する高さ位置で継線部に接続されていることを特徴とするものである。
The coil component of the present invention includes a core member having a winding core, a plurality of windings wound around the winding core, and a core member that is electrically connected to lead portions at both ends of each winding. The plurality of windings are arranged in a direction perpendicular to the axis of the winding core so that the lead-out portion is positioned in the outermost layer in a state where the windings are aligned in the axial direction of the winding core. The core member has a substantially square shape, and the core member has a notch at a portion including four corners. There are formed respectively, each of the terminal electrodes has a shaped electrode main body portion of the cross-section co-mounted so as to sandwich the side wall of the core member from above and below, the electrode main body and the connecting wire portion that is formed integrally with have, connecting wire portion is disposed in the notch portion to fit within the external dimensions of the core member Are, the lead portions of the drawn out winding from the outermost layer, is characterized in that it is connected to the joint line portion at a height position corresponding to the core portion.

このように複数本の巻線の引き出し部が全て最外層から引き出される構成とすることにより、全ての引き出し部を自在に動かすことが可能となるため、各巻線の引き出し部同士を近づけた状態で引き出したり、各巻線の引き出し部同士を離した状態で引き出すことができる。これにより、各巻線の引き出し部同士の結合係数を自在に設定可能となるので、コイル部品のインピーダンス特性の調整を容易に且つ確実に行うことができる。また、複数本の巻線の引き出し部が全て最外層から引き出されるような巻回法を採用することにより、巻線の線積率を向上させて、コイル部品のインピーダンスを高くすることができる。さらに、巻線の引き出し部が最外層から引き出されていない場合には、例えば引き出し部を端子電極に接続する際に、引き出し部が無理に急激に曲げられて断線する可能性があるが、各巻線の引き出し部を全て最外層から引き出すことで、そのような巻線の断線を防ぐことができる。   In this way, since all of the lead portions of the plurality of windings are drawn from the outermost layer, all the lead portions can be moved freely, so that the lead portions of each winding are close to each other. It can be pulled out or pulled out with the leading portions of each winding separated. As a result, the coupling coefficient between the lead portions of the windings can be freely set, so that the impedance characteristic of the coil component can be easily and reliably adjusted. Further, by adopting a winding method in which all the lead portions of a plurality of windings are drawn from the outermost layer, the line product ratio of the windings can be improved and the impedance of the coil component can be increased. Further, when the lead portion of the winding is not drawn from the outermost layer, for example, when the lead portion is connected to the terminal electrode, the lead portion may be forcibly and suddenly bent and disconnected. By pulling out all the wire drawing portions from the outermost layer, such disconnection of the winding can be prevented.

好ましくは、コア部材は、巻芯部と巻芯部の両端に設けられた1対の鍔部とを有する第1コアと、第1コアを包囲するように第1コアに固定された第2コアとを有し、端子電極は、第2コアに設けられている。この場合には、コア部材を閉磁路構造とすることができる。これにより、コア部材の漏れ磁束の低減化が図れるため、コイル部品のインピーダンス特性を向上させることができ、ノイズの発生を抑制することが可能となる Preferably, the core member has a first core having a core portion and a pair of flange portions provided at both ends of the core portion, and a second core fixed to the first core so as to surround the first core. And the terminal electrode is provided on the second core. In this case, the core member can have a closed magnetic circuit structure. Thereby, since the leakage magnetic flux of a core member can be reduced, the impedance characteristic of a coil component can be improved and generation | occurrence | production of noise can be suppressed .

本発明によれば、コア部材の巻芯部に巻回された複数本の巻線の両端の引き出し部を全て最外層から引き出すような構成としたので、コイル部品のインピーダンス特性の調整を容易に且つ確実に行うことができる。これにより、例えば客先の用途に十分対処した高品質のコイル部品を提供することが可能となる。   According to the present invention, since the lead portions at both ends of the plurality of windings wound around the core portion of the core member are all drawn from the outermost layer, it is easy to adjust the impedance characteristics of the coil components. And it can be performed reliably. Thereby, for example, it is possible to provide a high-quality coil component that sufficiently copes with the customer's application.

以下、本発明に係わるコイル部品の好適な実施形態について、図面を参照して詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a coil component according to the present invention will be described in detail with reference to the drawings.

図1は、本発明に係わるコイル部品の一実施形態を上面側から見た斜視図であり、図2は、図1に示すコイル部品を下面側から見た斜視図である。各図において、本実施形態のコイル部品1は、例えば電源ライン用のコモンモードチョークコイルである。コイル部品1は、ドラムコア2及びリングコア3からなるコア部材4を備えている。コア部材4は、フェライト等の磁性体で形成されている。   FIG. 1 is a perspective view of one embodiment of a coil component according to the present invention as viewed from the upper surface side, and FIG. 2 is a perspective view of the coil component shown in FIG. 1 as viewed from the lower surface side. In each figure, the coil component 1 of this embodiment is, for example, a common mode choke coil for a power supply line. The coil component 1 includes a core member 4 including a drum core 2 and a ring core 3. The core member 4 is made of a magnetic material such as ferrite.

ドラムコア2は、図3及び図4に示すように、円柱状の巻芯部5と、この巻芯部5の両端に設けられた1対の円板状の鍔部6A,6Bとを有している。巻芯部5には2本の巻線(導線)7,8が巻回されており、これによってコイル部9が形成されている。   As shown in FIGS. 3 and 4, the drum core 2 includes a cylindrical core portion 5 and a pair of disk-shaped flange portions 6 </ b> A and 6 </ b> B provided at both ends of the core portion 5. ing. Two windings (conducting wires) 7 and 8 are wound around the core portion 5, thereby forming a coil portion 9.

巻線7の両端の引き出し部7a,7b及び巻線8の両端の引き出し部8a,8bは、巻芯部5から略四方に向けて延びている。巻線7,8は、巻芯部5の軸芯方向に並んだ状態で、引き出し部7a,7b,8a,8bがコイル部9の最外層に位置するように巻芯部5の軸芯に垂直な方向に複数層巻回されている。これにより、巻線7の引き出し部7a,7b及び巻線8の引き出し部8a,8bは、全てコイル部9の最外層から引き出されることになる。   The lead-out portions 7a and 7b at both ends of the winding 7 and the lead-out portions 8a and 8b at both ends of the winding 8 extend from the core 5 toward substantially four directions. The windings 7 and 8 are arranged on the axis of the core 5 so that the lead-out portions 7a, 7b, 8a, and 8b are positioned on the outermost layer of the coil 9 in a state where they are aligned in the axial direction of the core 5. Multiple layers are wound in the vertical direction. As a result, the lead portions 7 a and 7 b of the winding 7 and the lead portions 8 a and 8 b of the winding 8 are all drawn from the outermost layer of the coil portion 9.

リングコア3は、図5に示すように、ドラムコア2が挿入される断面円形状の貫通孔10を有し、ドラムコア2を包囲する略正方形状のコアである。リングコア3の下面における4つの角部を含む部位には、切り欠き部11a,11b,12a,12bがそれぞれ形成されている。なお、リングコア3は、貫通孔10の代わりに、断面円形状の凹部を有していても良い。   As shown in FIG. 5, the ring core 3 has a through hole 10 having a circular cross section into which the drum core 2 is inserted, and is a substantially square core surrounding the drum core 2. Cutout portions 11 a, 11 b, 12 a, and 12 b are formed in portions including four corners on the lower surface of the ring core 3. The ring core 3 may have a recess having a circular cross section instead of the through hole 10.

リングコア3には、巻線7の引き出し部7a,7bとそれぞれ電気的に接続される端子電極13a,13bと、巻線8の引き出し部8a,8bとそれぞれ電気的に接続される端子電極14a,14bとが設けられている。端子電極13a,14aは、リングコア3の一方の側壁に固定され、端子電極13b,14bは、リングコア3の他方の側壁に固定されている。端子電極13a,13b,14a,14bは、リングコア3の側壁を上下から挟み込むように取り付けられた断面コの字状の電極本体部15と、この電極本体部15と一体的に形成され、巻線7,8と接続される断面U字状の継線部16とを有している。各継線部16は、リングコア3の切り欠き部11a,11b,12a,12bに配置されるように構成されている。   The ring core 3 has terminal electrodes 13a and 13b electrically connected to the lead portions 7a and 7b of the winding 7, respectively, and terminal electrodes 14a and 14b electrically connected to the lead portions 8a and 8b of the winding 8 respectively. 14b. The terminal electrodes 13 a and 14 a are fixed to one side wall of the ring core 3, and the terminal electrodes 13 b and 14 b are fixed to the other side wall of the ring core 3. The terminal electrodes 13a, 13b, 14a, and 14b are formed integrally with the electrode body 15 having a U-shaped cross-section attached so as to sandwich the side wall of the ring core 3 from above and below, 7 and 8 and a connecting part 16 having a U-shaped cross section. Each connecting portion 16 is configured to be disposed in the cutout portions 11 a, 11 b, 12 a, and 12 b of the ring core 3.

巻線7,8が巻回されたドラムコア2をリングコア3に組み付けるときは、まずドラムコア2をリングコア3の下面側から貫通孔10内に挿入する。そして、巻線7の両端の引き出し部7a,7bを端子電極13a,13bの継線部16にそれぞれ継線し、巻線8の両端の引き出し部8a,8bを端子電極14a,14bの継線部16にそれぞれ継線する。具体的には、図6に示すように、引き出し部7a,7bは、略垂直に折り曲げた状態で端子電極13a,13bの継線部16にそれぞれ継線し、引き出し部8a,8bは、略まっすぐ延ばした状態で端子電極14a,14bの継線部16にそれぞれ継線する。このとき、引き出し部7a,7b,8a,8bはコイル部9の最外層から引き出されているので、引き出し部7a,7b,8a,8bを無理に曲げずに継線することができる。   When the drum core 2 around which the windings 7 and 8 are wound is assembled to the ring core 3, the drum core 2 is first inserted into the through hole 10 from the lower surface side of the ring core 3. The lead portions 7a and 7b at both ends of the winding 7 are connected to the connecting portions 16 of the terminal electrodes 13a and 13b, respectively, and the lead portions 8a and 8b at both ends of the winding 8 are connected to the terminal electrodes 14a and 14b. Connections are made to the sections 16 respectively. Specifically, as shown in FIG. 6, the lead portions 7a and 7b are respectively connected to the connecting portion 16 of the terminal electrodes 13a and 13b in a state of being bent substantially vertically, and the lead portions 8a and 8b are substantially In a straight line, the connection is made to the connecting portions 16 of the terminal electrodes 14a and 14b. At this time, since the lead portions 7a, 7b, 8a, and 8b are drawn from the outermost layer of the coil portion 9, the lead portions 7a, 7b, 8a, and 8b can be connected without being bent excessively.

このように巻線7,8を配線した後、リングコア3の上面3a及びドラムコア2の鍔部6Bに跨って接着剤を塗布することにより、リングコア3とドラムコア2とを一体固定する。その後、例えば端子電極13a,13b,14a,14bの継線部16にレーザ光を照射することにより、各継線部16と引き出し部7a,7b,8a,8bとを溶融させて接続する。   After the windings 7 and 8 are thus wired, the ring core 3 and the drum core 2 are integrally fixed by applying an adhesive across the upper surface 3a of the ring core 3 and the flange portion 6B of the drum core 2. Thereafter, for example, the connecting portions 16 of the terminal electrodes 13a, 13b, 14a, and 14b are irradiated with laser light to melt and connect the connecting portions 16 and the lead portions 7a, 7b, 8a, and 8b.

次に、巻線7の引き出し部7a,7b及び巻線8の引き出し部8a,8bがコイル部9の最外層から引き出されるように、ドラムコア2の巻芯部5に巻線7,8を一緒に巻回する方法について説明する。図7は、巻線7,8の巻回に使用する巻線装置17の概略構成図である。   Next, the windings 7 and 8 are put together on the core part 5 of the drum core 2 so that the lead-out parts 7a and 7b of the winding 7 and the lead-out parts 8a and 8b of the winding 8 are drawn out from the outermost layer of the coil part 9. A method of winding around will be described. FIG. 7 is a schematic configuration diagram of a winding device 17 used for winding the windings 7 and 8.

同図において、巻線装置17は、ドラムコア2を保持する回転可能なドラムチャック部18と、このドラムチャック部18の上方に配置された巻線導出フライヤ19,20と、ドラムチャック部18の下方に配置された巻線引込フライヤ21,22とを有している。なお、ドラムチャック部18と巻線引込フライヤ22との間には、リングコア3を保持するリングチャック部23が配置されている。   In the figure, a winding device 17 includes a rotatable drum chuck portion 18 that holds the drum core 2, winding lead flyers 19 and 20 disposed above the drum chuck portion 18, and a lower portion of the drum chuck portion 18. Winding pull-in flyers 21 and 22 arranged in A ring chuck portion 23 that holds the ring core 3 is disposed between the drum chuck portion 18 and the winding pull-in flyer 22.

巻線導出フライヤ19,20には、下方に延びる筒状の巻線導出ノズル24,25がそれぞれ設けられている。巻線導出ノズル25は、巻線導出ノズル24よりも所定量だけドラムチャック部18側に配置されている。巻線導出ノズル24,25は、巻線供給部(図示せず)から張力付与部26,27を介して供給される巻線7,8をそれぞれ挿通させる。巻線導出フライヤ19,20は、ドラムチャック部18の回転軸Pを中心軸として、個別に回動可能である。   The winding lead flyers 19 and 20 are respectively provided with cylindrical winding lead nozzles 24 and 25 extending downward. The winding lead nozzle 25 is disposed on the drum chuck portion 18 side by a predetermined amount from the winding lead nozzle 24. The winding lead-out nozzles 24 and 25 allow the windings 7 and 8 supplied from the winding supply unit (not shown) through the tension applying units 26 and 27 to pass therethrough, respectively. The winding derivation flyers 19 and 20 can be individually rotated about the rotation axis P of the drum chuck portion 18 as a central axis.

巻線引込フライヤ21,22には、上方に延びる断面略U字状の巻線引込ノズル28,29がそれぞれ設けられている。巻線引込ノズル29は、巻線引込ノズル28よりも所定量(巻線導出ノズル25,26間の間隔と同等分)だけドラムチャック部18側に配置されている。巻線引込ノズル28,29には、巻線導出ノズル24,25から導出された巻線7,8がそれぞれ引き込まれる。巻線引込フライヤ21,22は、ドラムチャック部18の回転軸Pを中心軸として、個別に回動可能である。   The winding lead flyers 21 and 22 are respectively provided with winding leading nozzles 28 and 29 having a substantially U-shaped cross section extending upward. The winding pull-in nozzle 29 is arranged on the drum chuck portion 18 side by a predetermined amount (equivalent to the interval between the winding lead-out nozzles 25 and 26) from the winding pull-in nozzle 28. The windings 7 and 8 led out from the winding lead-out nozzles 24 and 25 are drawn into the winding lead-in nozzles 28 and 29, respectively. The winding pull-in flyers 21 and 22 can be individually rotated around the rotation axis P of the drum chuck portion 18 as a central axis.

図8に示すように、巻線導出ノズル25の先端(下端)は、巻線導出ノズル24の先端よりも巻線7,8の外径分だけ下方に位置している。また、巻線引込ノズル29の先端(上端)は、巻線引込ノズル28の先端よりも巻線7,8の外径分だけ下方に位置している。これにより、巻線7,8をドラムコア2の巻芯部5の軸芯方向に並べた状態で一緒に巻回することが可能となる。   As shown in FIG. 8, the tip (lower end) of the winding lead-out nozzle 25 is positioned below the tip of the winding lead-out nozzle 24 by the outer diameter of the windings 7 and 8. The tip (upper end) of the winding lead-in nozzle 29 is positioned below the tip of the winding lead-in nozzle 28 by the outer diameter of the windings 7 and 8. As a result, the windings 7 and 8 can be wound together while being arranged in the axial direction of the core portion 5 of the drum core 2.

図7に戻り、巻線引込フライヤ21,22の下方には、巻線7,8に張力を与えるように巻線7,8をそれぞれ保持する巻線保持部30,31が配置されている。巻線保持部30,31は、巻線引込フライヤ21,22と一緒にそれぞれ回動可能である。   Returning to FIG. 7, below the winding pull-in flyers 21, 22, winding holding portions 30, 31 that respectively hold the windings 7, 8 are provided so as to apply tension to the windings 7, 8. The winding holding portions 30 and 31 can be rotated together with the winding pull-in flyers 21 and 22, respectively.

このような巻線装置17によりドラムコア2の巻芯部5に巻線7,8を巻回するときは、まず図7及び図9に示すように、巻線導出ノズル24,25及び巻線引込ノズル28,29をそれぞれ略同じ位置となるように配置する。そして、その状態で、ドラムチャック部18及び巻線引込フライヤ21,22を時計回りに回転させる。なお、巻線引込フライヤ21,22の回転数は、ドラムチャック部18の回転数の2倍となるようにする。   When winding the windings 7 and 8 around the core portion 5 of the drum core 2 with such a winding device 17, first, as shown in FIGS. 7 and 9, the winding lead-out nozzles 24 and 25 and the winding pull-in are performed. The nozzles 28 and 29 are arranged so as to be substantially at the same position. In this state, the drum chuck 18 and the winding pull-in flyers 21 and 22 are rotated clockwise. The rotational speed of the winding pull-in flyers 21 and 22 is set to be twice the rotational speed of the drum chuck portion 18.

このとき、図9に示す初期状態から、ドラムチャック部18を1/4回転させると、巻線引込フライヤ21,22は1/2回転することになるため、図10に示すように、巻線引込ノズル28,29は、ドラムコア2に対して初期位置の反対側の位置まで移動する。これにより、巻線7,8は、ドラムコア2の巻芯部5の軸芯方向に並んだ状態で、巻芯部5に接して巻回され始める。   At this time, when the drum chuck portion 18 is rotated 1/4 from the initial state shown in FIG. 9, the winding pull-in flyers 21 and 22 are rotated 1/2. The drawing nozzles 28 and 29 move to a position opposite to the initial position with respect to the drum core 2. Accordingly, the windings 7 and 8 start to be wound in contact with the core portion 5 in a state where they are aligned in the axial direction of the core portion 5 of the drum core 2.

図10に示す状態から、ドラムチャック部18を更に1/4回転させると、巻線引込フライヤ21,22は更に1/2回転することになるため、図11に示すように、巻線引込ノズル28,29は初期位置に戻ってくる。これにより、巻線7,8は、ドラムコア2の巻芯部5の軸芯方向に並んだ状態で、約2/3周程度巻回されることになる。   When the drum chuck portion 18 is further rotated by 1/4 from the state shown in FIG. 10, the winding pull-in flyers 21 and 22 are further rotated by half, so that as shown in FIG. 28 and 29 return to the initial positions. As a result, the windings 7 and 8 are wound about 2/3 times in a state where they are aligned in the axial direction of the core 5 of the drum core 2.

図11に示す状態から、ドラムチャック部18を更に1/4回転させると、巻線引込フライヤ21,22は更に1/2回転することになるため、図12に示すように、巻線引込ノズル28,29は、再びドラムコア2に対して初期位置の反対側の位置まで移動する。これにより、巻線7,8は、ドラムコア2の巻芯部5の軸芯方向に並んだ状態で、約1周巻回されることになる。   When the drum chuck portion 18 is further rotated 1/4 from the state shown in FIG. 11, the winding pull-in flyers 21 and 22 are further rotated 1/2. 28 and 29 again move to a position opposite to the initial position with respect to the drum core 2. Thus, the windings 7 and 8 are wound about one turn in a state where they are aligned in the axial direction of the core 5 of the drum core 2.

図12に示す状態から、ドラムチャック部18を更に1/4回転させて、トータルでドラムチャック部18を1回転させると、巻線引込フライヤ21,22は更に1/2回転することになるため、図13に示すように、巻線引込ノズル28,29は、再び初期位置に戻ってくる。これにより、既に巻かれた巻線7,8を押し上げるように巻線7,8が更に巻回されることになる。   From the state shown in FIG. 12, if the drum chuck portion 18 is further rotated by 1/4 and the drum chuck portion 18 is rotated once in total, the winding pull-in flyers 21 and 22 are further rotated by 1/2. As shown in FIG. 13, the winding lead-in nozzles 28 and 29 return to the initial position again. As a result, the windings 7 and 8 are further wound so as to push up the windings 7 and 8 that have already been wound.

以上のようにしてドラムチャック部18及び巻線引込フライヤ21,22を更に回転させると、図14に示すように、巻線7,8は、ドラムコア2の巻芯部5の軸芯方向に並んだ状態で、巻芯部5の軸芯に対して垂直な方向に複数層(ここでは3層)に亘って巻回されることになる。   When the drum chuck portion 18 and the winding pull-in flyers 21 and 22 are further rotated as described above, the windings 7 and 8 are aligned in the axial direction of the core portion 5 of the drum core 2 as shown in FIG. In this state, it is wound over a plurality of layers (here, three layers) in a direction perpendicular to the axis of the winding core portion 5.

そして、巻線導出ノズル24,25が図15に示すような位置に達するように巻線導出フライヤ19,20を回転させると共に、巻線引込ノズル28,29が図15に示すような位置に達するように巻線引込フライヤ21,22を回転させる。その後、リングチャック部23に保持されたリングコア3にドラムコア2を組み付けた状態で、巻線7の両端の引き出し部7a,7b及び巻線8の両端の引き出し部8a,8bが所定量だけ確保されるように、巻線7,8を切断する。これにより、図3に示すような巻線7,8が巻回された状態のドラムコア2が得られる。   Then, the winding lead flyers 19 and 20 are rotated so that the winding lead nozzles 24 and 25 reach the positions as shown in FIG. 15, and the winding lead nozzles 28 and 29 reach the positions as shown in FIG. Thus, the winding pull-in flyers 21 and 22 are rotated. Thereafter, in a state where the drum core 2 is assembled to the ring core 3 held by the ring chuck portion 23, the lead portions 7a and 7b at both ends of the winding 7 and the lead portions 8a and 8b at both ends of the winding 8 are secured by a predetermined amount. Then, the windings 7 and 8 are cut. Thereby, the drum core 2 with the windings 7 and 8 wound as shown in FIG. 3 is obtained.

以上のように本実施形態のコイル部品1にあっては、巻線7の両端の引き出し部7a,7b及び巻線8の両端の引き出し部8a,8bがいずれもコイル部9の最外層から引き出されているので、引き出し部7a,7b及び引き出し部8a,8bを無理なく自在に動かすことができる。このため、異なる巻線7,8の引き出し部の接近具合で決定される結合係数を容易に制御可能となるので、結果的にコイル部品1のインピーダンス(インダクタンス)等の電気的特性を容易に調整することができる。例えば、高インピーダンスが要求されている場合には、巻線7,8の引き出し部同士を接近させた状態で引き出すことで結合係数を高くし、低インピーダンスが要求されている場合には、巻線7,8の引き出し部同士を離間させた状態で引き出すことで結合係数を低くすれば良い。従って、要求されている用途に応じたインピーダンス特性を有するコイル部品1を提供することができる。   As described above, in the coil component 1 according to the present embodiment, the lead portions 7 a and 7 b at both ends of the winding 7 and the lead portions 8 a and 8 b at both ends of the winding 8 are both drawn from the outermost layer of the coil portion 9. Therefore, the drawer portions 7a and 7b and the drawer portions 8a and 8b can be moved freely without difficulty. This makes it possible to easily control the coupling coefficient determined by the proximity of the lead portions of the different windings 7 and 8, and consequently easily adjust the electrical characteristics such as impedance (inductance) of the coil component 1. can do. For example, when a high impedance is required, the coupling coefficient is increased by drawing the windings 7 and 8 close to each other, and when a low impedance is required, the winding What is necessary is just to make a coupling coefficient low by pulling out in the state which separated the 7 and 8 drawer parts. Therefore, it is possible to provide the coil component 1 having impedance characteristics corresponding to the required application.

また、巻線7の引き出し部7a,7b及び巻線8の引き出し部8a,8bが全てコイル部9の最外層に位置するように巻線7,8が巻回されているので、一般的な整列巻きと比較して、線積率を向上させることができる。この場合には、コイル部品1のインピーダンスを更に高くすることが可能となる。   Further, since the windings 7 and 8 are wound so that the leading portions 7a and 7b of the winding 7 and the leading portions 8a and 8b of the winding 8 are all located in the outermost layer of the coil portion 9, Compared with aligned winding, the line area ratio can be improved. In this case, the impedance of the coil component 1 can be further increased.

さらに、巻線7,8の引き出し部をコイル部9の内側の層から引き出した場合と異なり、巻線7,8の引き出し部の結合係数を調整したり、或いは巻線7,8の引き出し部を継線部16に接続するために、巻線7,8を無理に引っ張ったり急激に曲げなくて済む。これにより、巻線7,8の断線を防止できるため、コイル部品1の信頼性を向上させることが可能となる。   Further, unlike the case where the lead portions of the windings 7 and 8 are drawn from the inner layer of the coil portion 9, the coupling coefficient of the lead portions of the windings 7 and 8 is adjusted, or the lead portions of the windings 7 and 8 are adjusted. Therefore, the windings 7 and 8 do not have to be pulled or bent suddenly. Thereby, since disconnection of the windings 7 and 8 can be prevented, the reliability of the coil component 1 can be improved.

なお、本発明に係わるコイル部品は、上記実施形態に限定されるものではない。例えば、上記実施形態のコイル部品1は、巻線7,8が巻かれるドラムコア2と、端子電極13a,13b,14a,14bが設けられたリングコア3とを有しているが、本発明は、これ以外にも、例えばドラムコアの一方の鍔部に端子電極を設けたタイプのものにも適用可能である。   The coil component according to the present invention is not limited to the above embodiment. For example, the coil component 1 of the above embodiment includes the drum core 2 around which the windings 7 and 8 are wound, and the ring core 3 provided with the terminal electrodes 13a, 13b, 14a, and 14b. Other than this, for example, the present invention can also be applied to a type in which a terminal electrode is provided on one flange portion of the drum core.

また、上記実施形態のコイル部品1は、ドラムコア2の巻芯部5に2本の巻線7,8を巻いたものであるが、本発明は、特にこれに限られず、ドラムコアの巻芯部に3本以上の巻線を巻いたものにも適用可能である。   Moreover, although the coil component 1 of the said embodiment winds the two windings 7 and 8 around the core part 5 of the drum core 2, this invention is not restricted to this in particular, The core part of a drum core It can also be applied to a coil wound with three or more windings.

本発明に係わるコイル部品の一実施形態を上面側から見た斜視図である。It is the perspective view which looked at one Embodiment of the coil components concerning this invention from the upper surface side. 本発明に係わるコイル部品の一実施形態を下面側から見た斜視図である。It is the perspective view which looked at one Embodiment of the coil components concerning this invention from the lower surface side. 図1及び図2に示すドラムコアの巻芯部に2本の巻線が巻回された状態を示す斜視図である。FIG. 3 is a perspective view showing a state in which two windings are wound around a core part of the drum core shown in FIGS. 1 and 2. 図3に示す状態のドラムコアの断面図である。It is sectional drawing of the drum core of the state shown in FIG. 図1及び図2に示すリングコアの斜視図である。FIG. 3 is a perspective view of the ring core shown in FIGS. 1 and 2. 図1及び図2に示すコイル部品の一部断面を含む平面図である。It is a top view including the partial cross section of the coil components shown in FIG.1 and FIG.2. 図1及び図2に示すドラムコアの巻芯部に2本の巻線を巻回するために使用される巻線装置の概略構成図である。It is a schematic block diagram of the winding apparatus used in order to wind two windings around the core part of the drum core shown in FIG.1 and FIG.2. 図7に示す巻線導出ノズルから巻線引込ノズルに導かれる2本の巻線がドラムコアの巻芯部に巻かれる状態を示す図である。FIG. 8 is a diagram illustrating a state in which two windings guided from a winding lead-out nozzle illustrated in FIG. 7 to a winding lead-in nozzle are wound around a core portion of a drum core. 図7に示す巻線装置により2本の巻線をドラムコアの巻芯部に巻回する工程を示す概念図である。It is a conceptual diagram which shows the process of winding two windings around the core part of a drum core with the winding apparatus shown in FIG. 図7に示す巻線装置により2本の巻線をドラムコアの巻芯部に巻回する工程を示す概念図と、そのX−X線に沿った矢視図である。It is the conceptual diagram which shows the process of winding two windings around the core part of a drum core with the winding apparatus shown in FIG. 7, and the arrow line view along the XX. 図7に示す巻線装置により2本の巻線をドラムコアの巻芯部に巻回する工程を示す概念図と、そのXI−XI線に沿った矢視図である。FIG. 8 is a conceptual diagram showing a process of winding two windings around a core part of a drum core by the winding device shown in FIG. 7, and an arrow view along the line XI-XI. 図7に示す巻線装置により2本の巻線をドラムコアの巻芯部に巻回する工程を示す概念図と、そのXII−XII線に沿った矢視図である。FIG. 8 is a conceptual diagram showing a process of winding two windings around a core part of a drum core by the winding device shown in FIG. 7 and an arrow view along the line XII-XII. 図7に示す巻線装置により2本の巻線をドラムコアの巻芯部に巻回する工程を示す概念図と、そのXIII−XIII線に沿った矢視図である。FIG. 8 is a conceptual diagram showing a process of winding two windings around a core part of a drum core by the winding device shown in FIG. 7 and an arrow view along the line XIII-XIII. 図7に示す巻線装置により2本の巻線をドラムコアの巻芯部に巻回する工程を示す概念図と、そのXIV−XIV線に沿った矢視図である。FIG. 8 is a conceptual diagram showing a process of winding two windings around a core part of a drum core by the winding device shown in FIG. 7 and an arrow view along the XIV-XIV line. 図7に示す巻線装置により2本の巻線をドラムコアの巻芯部に巻回する工程を示す概念図である。It is a conceptual diagram which shows the process of winding two windings around the core part of a drum core with the winding apparatus shown in FIG.

符号の説明Explanation of symbols

1…コイル部品、2…ドラムコア(第1コア)、3…リングコア(第2コア)、4…コア部材、5…巻芯部、6A,6B…鍔部、7…巻線、7a,7b…引き出し部、8…巻線、8a,8b…引き出し部、13a,13b,14a,14b…端子電極。   DESCRIPTION OF SYMBOLS 1 ... Coil component, 2 ... Drum core (1st core), 3 ... Ring core (2nd core), 4 ... Core member, 5 ... Core part, 6A, 6B ... Gutter part, 7 ... Winding, 7a, 7b ... Lead-out part, 8 ... winding, 8a, 8b ... lead-out part, 13a, 13b, 14a, 14b ... terminal electrode.

Claims (2)

巻芯部を有するコア部材と、
前記巻芯部に巻回された複数本の巻線と、
前記コア部材に設けられ、前記各巻線の両端の引き出し部とそれぞれ電気的に接続される複数の端子電極とを備え、
前記複数本の巻線は、前記巻芯部の軸芯方向に並んだ状態で、前記引き出し部が最外層に位置するように前記巻芯部の軸芯に垂直な方向に複数層巻回されてなり、
前記各巻線の前記引き出し部は全て前記最外層から引き出されており、
前記コア部材は、略正方形状を有し、
前記コア部材における4つの角部を含む部位には切り欠き部がそれぞれ形成されており、
前記各端子電極は、前記コア部材の側壁を上下から挟み込むように取り付けられた断面コの字状の電極本体部と、前記電極本体部と一体的に形成された継線部とを有し、
前記継線部は、前記コア部材の外形寸法内に収まるように前記切り欠き部に配置されており、
前記最外層から引き出された前記各巻線の前記引き出し部は、前記巻芯部に対応する高さ位置で前記継線部に接続されていることを特徴とするコイル部品。
A core member having a core part;
A plurality of windings wound around the core, and
A plurality of terminal electrodes provided on the core member and electrically connected to the lead portions at both ends of each winding;
The plurality of windings are wound in a plurality of layers in a direction perpendicular to the axis of the core part so that the lead-out part is positioned in the outermost layer in a state where the windings are aligned in the axis direction of the core part. And
All the lead portions of each winding are drawn from the outermost layer,
The core member has a substantially square shape,
Notches are respectively formed in portions including four corners in the core member,
Each terminal electrode has a U-shaped electrode body part attached so as to sandwich the side wall of the core member from above and below, and a connecting part integrally formed with the electrode body part,
The connecting portion is disposed in the cutout portion so as to be within the outer dimensions of the core member,
The coil component, wherein the lead portion of each winding drawn from the outermost layer is connected to the connecting portion at a height position corresponding to the core portion.
前記コア部材は、前記巻芯部と前記巻芯部の両端に設けられた1対の鍔部とを有する第1コアと、前記第1コアを包囲するように前記第1コアに固定された第2コアとを有し、
前記端子電極は、前記第2コアに設けられていることを特徴とする請求項1記載のコイル部品。
The core member is fixed to the first core so as to surround the first core, and a first core having a pair of flanges provided at both ends of the core and the core. A second core,
The coil component according to claim 1, wherein the terminal electrode is provided on the second core.
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