JP2009141323A - Inductance component and method for manufacturing the same - Google Patents

Inductance component and method for manufacturing the same Download PDF

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JP2009141323A
JP2009141323A JP2008227939A JP2008227939A JP2009141323A JP 2009141323 A JP2009141323 A JP 2009141323A JP 2008227939 A JP2008227939 A JP 2008227939A JP 2008227939 A JP2008227939 A JP 2008227939A JP 2009141323 A JP2009141323 A JP 2009141323A
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coil conductor
inductance component
connection portion
coil
winding drum
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JP5169649B2 (en
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Manabu Sato
学 佐藤
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Panasonic Corp
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Panasonic Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inductance component which is compact and has a stable inductance value. <P>SOLUTION: Provided is the compact and high-performance inductance component which is excellently mass-produced by providing a drum core 13 comprising a drum portion 11 and a collar portion 12, a coil conductor 14, and a terminal electrode 17 comprising a mounting portion 15 and a connection portion 16, and leading the coil conductor 14 from between the connection portion 16 and drum portion 11 and then fixing it along an outer surface of the connection portion 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、各種電子機器等に用いられるインダクタンス部品およびその製造方法に関するものである。   The present invention relates to an inductance component used for various electronic devices and a method for manufacturing the same.

以下、従来のインダクタンス部品について、図面を参照しながら説明する。   Hereinafter, conventional inductance components will be described with reference to the drawings.

図４は従来のインダクタンス部品の斜視図を示したもので、この図４に示すように、従来のインダクタンス部品は、ドラムコア１にコイル導線２を巻きつけるとともに、このコイル導線２を端子電極３に接続するようにしていた。この場合、端子電極３は実装部４と接続部５を有しており、この中の接続部５にコイル導線２の端部を巻きつけ半田付け（図示していない）することにより、コイル導線２と端子電極３とを電気的に接続するようにしていた。   FIG. 4 is a perspective view of a conventional inductance component. As shown in FIG. 4, the conventional inductance component wraps the coil conductor 2 around the drum core 1 and the coil conductor 2 around the terminal electrode 3. I was trying to connect. In this case, the terminal electrode 3 has a mounting portion 4 and a connection portion 5, and the end portion of the coil lead wire 2 is wound around the connection portion 5 and soldered (not shown) to thereby form a coil lead wire. 2 and the terminal electrode 3 were electrically connected.

なお、この出願の発明に関する先行技術文献情報としては、例えば特許文献１が知られている。
特開２００４−１４６６４４号公報 For example, Patent Document 1 is known as prior art document information relating to the invention of this application.
JP 2004-146644 A

上記した従来のインダクタンス部品においては、コイル導線２を接続部５に巻きつける場合、実装部４と連接された接続部５を実装部４に対して斜めになるように曲げ、そしてドラムコア１から導出されたコイル導線２の端部を接続部５の外側から巻きつけ、その後、半田（図示していない）により固定するようにしていた。しかしながら、このような構成にした場合は、接続部５がドラムコア１の周辺よりも外側に突出するため、全体のサイズが大きくなるとともに、接続部５の折り曲げのばらつきにより、コイル導線２が撓んで、直流抵抗値やインダクタンス値がばらつくという課題があった。   In the above-described conventional inductance component, when the coil conductor 2 is wound around the connecting portion 5, the connecting portion 5 connected to the mounting portion 4 is bent so as to be inclined with respect to the mounting portion 4 and is led out from the drum core 1. The end portion of the coiled conductor wire 2 was wound from the outside of the connecting portion 5 and then fixed with solder (not shown). However, in such a configuration, since the connecting portion 5 protrudes outward from the periphery of the drum core 1, the overall size is increased, and the coil conductor 2 is bent due to a variation in the bending of the connecting portion 5. There is a problem that the DC resistance value and the inductance value vary.

本発明は上記従来の課題を解決するもので、小型で、かつ直流抵抗値やインダクタンス値の安定したインダクタンス部品を提供することを目的とするものである。   The present invention solves the above-described conventional problems, and an object thereof is to provide an inductance component that is small in size and has a stable DC resistance value and inductance value.

上記目的を達成するために、本発明は以下の構成を有するものである。   In order to achieve the above object, the present invention has the following configuration.

本発明の請求項１に記載の発明は、巻胴部と鍔部を有するドラムコアと、このドラムコアの巻胴部に巻きつけたコイル導線と、実装部と接続部を有する端子電極とを備え、前記コイル導線を前記巻胴部と接続部との間から導出し、かつこのコイル導線を前記接続部の外面に沿わせて固定するようにしたもので、この構成によれば、従来のように、コイル導線を端子電極の接続部に巻きつける必要がなくなるため、接続部を実装部とほぼ９０度になるように折り曲げることができ、これにより、インダクタンス部品の形状が大きくなるのを防ぐことができるという作用効果を有するものである。   The invention according to claim 1 of the present invention includes a drum core having a winding drum portion and a flange portion, a coil wire wound around the winding drum portion of the drum core, and a terminal electrode having a mounting portion and a connection portion, The coil conducting wire is led out from between the winding body and the connecting portion, and the coil conducting wire is fixed along the outer surface of the connecting portion. According to this configuration, Since it is not necessary to wrap the coil conductor around the terminal electrode connection portion, the connection portion can be bent so as to be approximately 90 degrees with respect to the mounting portion, thereby preventing an increase in the shape of the inductance component. It has the effect of being able to.

本発明の請求項２に記載の発明は、特に、接続部でコイル導線を内角が９０度より小さくなるように折り曲げて、前記接続部にコイル導線を固定するようにしたもので、この構成によれば、コイル導線と接続部を機械的に固定することができるため、従来のように巻胴部と接続部との間でコイル導線に引っ張り張力がかかって、コイル導線が撓むことに起因する直流抵抗値のばらつきやインダクタンス値のばらつきも防止することができるという作用効果を有するものである。   The invention according to claim 2 of the present invention is such that the coil conductor is bent at the connection portion so that the inner angle is smaller than 90 degrees, and the coil conductor is fixed to the connection portion. According to the present invention, since the coil conductor and the connecting portion can be mechanically fixed, the tensile force is applied to the coil conductor between the winding body and the connecting portion as in the conventional case, and the coil conductor is bent. Thus, it is possible to prevent the variation of the direct current resistance value and the variation of the inductance value.

本発明の請求項３に記載の発明は、特に、接続部の外面に沿わせる長さを、前記接続部の幅よりも短くしたもので、この構成によれば、接続部から切断したコイル導線の端部がはみ出すことがなく、インダクタンス部品の形状が大きくなるのを防ぐことができるという作用効果を有するものである。   According to the third aspect of the present invention, in particular, the length along the outer surface of the connecting portion is shorter than the width of the connecting portion. According to this configuration, the coil conductor cut from the connecting portion is provided. Thus, the end portion of the inductor does not protrude, and the shape of the inductance component can be prevented from becoming large.

本発明の請求項４に記載の発明は、巻胴部と鍔部を有するドラムコアの前記巻胴部にコイル導線を巻きつける工程と、これを実装部と接続部を有する端子電極に取り付ける工程と、前記コイル導線を前記巻胴部と前記接続部との間から導出し、前記コイル導線を所定の位置で切断する切断工程とを備え、前記切断工程において切断と同時に前記コイル導線を曲げることにより前記接続部の外面に沿わせて固定する製造方法としたもので、この方法によれば、コイル導線を曲げて、接続部に固定した後にコイル導線を切断したときのような、コイル導線の端面が接続部からはみ出した状態となることがなくなり、インダクタンス部品の形状が大きくなるのを防ぐことができるという作用効果を有するものである。   The invention according to claim 4 of the present invention includes a step of winding a coil conductor around the winding drum portion of the drum core having a winding drum portion and a flange portion, and a step of attaching the coil conductor to a terminal electrode having a mounting portion and a connection portion. The coil conductor is led out from between the winding drum portion and the connecting portion, and the coil conductor is cut at a predetermined position, and the coil conductor is bent simultaneously with the cutting in the cutting step. According to this method, the coil conductor is bent along the outer surface of the connecting portion, and the coil conductor is bent and fixed to the connecting portion, and then the end surface of the coil conductor is cut. Is prevented from protruding from the connecting portion, and the inductance component can be prevented from increasing in shape.

以上のように本発明のインダクタンス部品は、巻胴部と鍔部を有するドラムコアと、このドラムコアの巻胴部に巻きつけたコイル導線と、実装部と接続部を有する端子電極とを備え、前記コイル導線を前記巻胴部と接続部との間から導出し、かつこのコイル導線を前記接続部の外面に沿わせて固定するようにしているため、コイル導線を端子電極の接続部に巻きつけることなく機械的に固定することができ、これにより、量産性が良く、かつ小型で高性能のインダクタンス部品を提供することができるという優れた効果を奏するものである。   As described above, the inductance component of the present invention includes a drum core having a winding drum portion and a flange portion, a coil lead wire wound around the winding drum portion of the drum core, and a terminal electrode having a mounting portion and a connection portion, Since the coil conducting wire is led out from between the winding body and the connecting portion, and the coil conducting wire is fixed along the outer surface of the connecting portion, the coil conducting wire is wound around the connecting portion of the terminal electrode. Therefore, it is possible to provide an excellent effect that it is possible to provide a small-sized and high-performance inductance component.

以下、本発明の一実施の形態におけるインダクタンス部品について、図面を参照しながら説明する。   Hereinafter, an inductance component according to an embodiment of the present invention will be described with reference to the drawings.

図１は本発明の一実施の形態におけるインダクタンス部品の斜視図、図２は図１のＡ−Ａ線断面図である。   FIG. 1 is a perspective view of an inductance component according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG.

図１および図２に示すように、本発明の一実施の形態におけるインダクタンス部品は、フェライトでできた巻胴部１１と鍔部１２を有するドラムコア１３の巻胴部１１に、平角導線の表面に絶縁体をコーティングしてなるコイル導線１４を巻きつけてインダクタンス素子を構成し、そして、このインダクタンス素子を実装部１５と接続部１６を有する端子電極１７に取り付け、かつ前記コイル導線１４の両端部を前記巻胴部１１と接続部１６との間から導出し、そして前記接続部１６の外面に沿わせるようにコイル導線１４を曲げ加工した後、このコイル導線１４と前記接続部１６とを半田付けして固定するようにしたものである。   As shown in FIG. 1 and FIG. 2, the inductance component in one embodiment of the present invention is formed on the surface of a rectangular conductor on the winding drum 11 of a drum core 13 having a winding drum 11 and a flange 12 made of ferrite. An inductance element is formed by winding a coil conductor wire 14 coated with an insulator, and this inductance element is attached to a terminal electrode 17 having a mounting portion 15 and a connection portion 16, and both ends of the coil conductor 14 are connected to each other. The coil conductor 14 is led out from between the winding drum portion 11 and the connection portion 16 and bent along the outer surface of the connection portion 16, and then the coil lead wire 14 and the connection portion 16 are soldered. And fixed.

ここで、前記端子電極１７は金属板を打ち抜いて構成したもので、これを折り曲げ加工することにより、実装部１５と接続部１６を形成しているものであり、そして実装部１５と接続部１６とのなす角をほぼ９０度になるようにしているものである。従来のようにコイル導線を巻きつけるようにしたものにおいては、巻きつける動きをするための空間を確保するために、接続部を実装部に対して斜めになるように曲げざるを得ず、そのため、インダクタンス部品の形状が大きくなっていたが、本発明の一実施の形態においては、コイル導線１４を導出して折り返しているため、接続部１６を実装部１５とほぼ９０度になるように折り曲げることができ、これにより、インダクタンス部品の形状が大きくなるのを防ぐことができるものである。   Here, the terminal electrode 17 is formed by punching a metal plate, and the mounting portion 15 and the connection portion 16 are formed by bending the metal plate, and the mounting portion 15 and the connection portion 16 are formed. The angle between the angle and the angle is approximately 90 degrees. In the case where the coil conductor is wound as in the prior art, in order to secure a space for the winding motion, the connecting portion must be bent so as to be inclined with respect to the mounting portion. Although the shape of the inductance component is large, in the embodiment of the present invention, since the coil conducting wire 14 is led out and folded, the connecting portion 16 is bent so as to be approximately 90 degrees with the mounting portion 15. This can prevent an increase in the shape of the inductance component.

また、前記接続部１６において、コイル導線１４は、巻胴部１１から接続部１６への延伸方向と、接続部１６で半田付けされた部分の延伸方向が、図２のθで示すように、９０度より小さくなるように折り曲げられているもので、このようにすることにより、コイル導線１４と接続部１６が機械的に固定されるため、半田付けする場合には、そのままディップ等で行うことができ、量産性が向上するものである。   Further, in the connection portion 16, the coil lead wire 14 has an extending direction from the winding drum portion 11 to the connecting portion 16 and an extending direction of a portion soldered by the connecting portion 16 as indicated by θ in FIG. It is bent so as to be smaller than 90 degrees. By doing so, the coil lead wire 14 and the connection portion 16 are mechanically fixed. Therefore, when soldering, it is performed by dipping or the like as it is. And mass productivity is improved.

そしてまた、巻胴部１１と接続部１６との間ではコイル導線１４に引っ張り張力がかかるようにしていることが望ましい。すなわち、巻胴部１１と接続部１６の間でコイル導線１４がたるんでいる場合は、その長さにばらつきが生じ、これが直流抵抗値やインダクタンス値のばらつきにつながるものである。   In addition, it is desirable that a tensile tension is applied to the coil conductor 14 between the winding drum portion 11 and the connection portion 16. That is, when the coil conducting wire 14 is slack between the winding drum portion 11 and the connection portion 16, the length thereof varies, which leads to variations in the DC resistance value and the inductance value.

そこで本発明の一実施の形態のように、コイル導線１４の両端部を巻胴部１１と接続部１６との間から導出し、かつこのコイル導線１４を接続部１６の外面に沿わせる場合、コイル導線１４の両端部で引っ張りながら、接続部１６を支点として折り曲げ加工を行うようにすれば、巻胴部１１と接続部１６との間でコイル導線１４に引っ張り張力がかかるように固定することができるもので、これにより、直流抵抗値やインダクタンス値のばらつきを低減させることができるとともに、温度変化によりコイル導線１４が伸びてインダクタンス値が変化するのも抑制することができ、これにより、高性能化が図れるものである。   Therefore, as in one embodiment of the present invention, when both ends of the coil conductor 14 are led out from between the winding drum portion 11 and the connection portion 16 and the coil conductor 14 is brought along the outer surface of the connection portion 16, If bending is performed using the connecting portion 16 as a fulcrum while pulling at both ends of the coil conducting wire 14, the coil conducting wire 14 is fixed so that a tensile tension is applied between the winding body 11 and the connecting portion 16. As a result, it is possible to reduce variations in the DC resistance value and the inductance value, and it is also possible to suppress the inductance value from being changed due to the coil conductor 14 extending due to a temperature change. The performance can be improved.

また、前記２つの接続部１６の位置は、インダクタンス部品の対角になる位置に配置することが望ましい。このようにすることにより、コイル導線１４の両端部に引っ張り張力をかけても、力が均等にかかるため、直流抵抗値やインダクタンス値のばらつきを小さくすることができるものである。   Further, it is desirable that the positions of the two connection portions 16 be arranged at positions that are diagonal to the inductance component. By doing in this way, even if tensile tension is applied to the both ends of the coil conducting wire 14, the force is applied evenly, so that variations in DC resistance value and inductance value can be reduced.

なお、上記本発明の一実施の形態においては、コイル導線１４に平角導線を用いたが、断面が円形の導線を用いても構わない。但し、この場合は、接続部１６と接続する部分だけは、接触面が平面になるようにつぶしておく方が固定しやすくなるものである。   In the above-described embodiment of the present invention, a rectangular conducting wire is used as the coil conducting wire 14, but a conducting wire having a circular cross section may be used. However, in this case, it is easier to fix only the portion connected to the connecting portion 16 so that the contact surface is flat.

また、接続部１６の外面に沿わせる長さを、接続部１６の幅よりも短くすることが望ましい。このようにすることにより、接続部１６から切断したコイル導線１４の端部がはみ出すことがなく、インダクタンス部品の形状が大きくなるのを防ぐことができるものである。   Further, it is desirable that the length along the outer surface of the connection portion 16 is shorter than the width of the connection portion 16. By doing in this way, the end part of the coil conducting wire 14 cut from the connection part 16 does not protrude, and the shape of the inductance component can be prevented from becoming large.

次にその製造方法について説明する。図３は本発明の一実施の形態におけるインダクタンス部品の製造方法を説明するための図である。   Next, the manufacturing method will be described. FIG. 3 is a diagram for explaining a method of manufacturing an inductance component according to an embodiment of the present invention.

まず、図３（ａ）は、巻胴部１１と鍔部１２を有するドラムコア１３の巻胴部１１にコイル導線１４を巻きつけ、これを実装部１５と接続部１６を有する端子電極１７に取り付け、コイル導線１４を巻胴部１１と接続部１６との間から導出した状態を、図１のＡ−Ａ線断面図で見たものである。   First, in FIG. 3A, the coil conductor 14 is wound around the winding drum 11 of the drum core 13 having the winding drum 11 and the flange 12, and this is attached to the terminal electrode 17 having the mounting portion 15 and the connection 16. The state which led the coil conducting wire 14 from between the winding trunk | drum 11 and the connection part 16 is seen by the sectional view on the AA line of FIG.

図３（ｂ）は、コイル導線１４を所定の位置で切断する切断工程を説明するために、接続部１６付近を拡大したものである。ここで接続部１６と対向する位置に固定刃１８を設置し、これに対して摺動刃１９を矢印のように接続部１６と平行な方向に摺動させる。接続部１６と固定刃１８との距離を、接続部１６の幅よりも狭く設定し、摺動刃１９の厚さとコイル導線１４の厚さとの和にほぼ等しくすることで、図３（ｂ）に点線で示すように、切断と同時にコイル導線１４を曲げ、接続部１６の外面に沿わせて固定することができる。   FIG. 3B is an enlarged view of the vicinity of the connecting portion 16 in order to explain a cutting process for cutting the coil conductor 14 at a predetermined position. Here, the fixed blade 18 is installed at a position facing the connection portion 16, and the sliding blade 19 is slid in the direction parallel to the connection portion 16 as shown by an arrow. By setting the distance between the connection portion 16 and the fixed blade 18 to be narrower than the width of the connection portion 16 and making it substantially equal to the sum of the thickness of the sliding blade 19 and the thickness of the coil conductor 14, FIG. As shown by the dotted line, the coil conductor 14 can be bent simultaneously with the cutting and fixed along the outer surface of the connecting portion 16.

コイル導線１４を曲げて、接続部１６に固定した後にコイル導線１４を切断すると、コイル導線１４の端面は接続部１６からはみ出した状態となる。これに対し本発明のようにすることにより、接続部１６から切断したコイル導線１４の端部がはみ出すことがなく、インダクタンス部品の形状が大きくなるのを防ぐことができるものである。   If the coil conductor 14 is cut after the coil conductor 14 is bent and fixed to the connection portion 16, the end surface of the coil conductor 14 protrudes from the connection portion 16. On the other hand, by making it like this invention, the edge part of the coil conducting wire 14 cut | disconnected from the connection part 16 does not protrude, and it can prevent that the shape of an inductance component becomes large.

本発明に係るインダクタンス部品は、コイル導線を端子電極における巻胴部と接続部との間から導出し、かつこのコイル導線を接続部の外面に沿わせて固定するようにすることにより、コイル導線を端子電極の接続部に巻きつけることなく機械的に固定することができ、これにより、量産性が良く、かつ小型で、高性能にすることができるという効果を有するものであり、特に、各種電子機器に適用して有効となるものである。   In the inductance component according to the present invention, the coil conductor is led out from between the winding body portion and the connection portion of the terminal electrode, and the coil conductor is fixed along the outer surface of the connection portion. Can be mechanically fixed without being wound around the connection portion of the terminal electrode, and this has the effect of being able to achieve high productivity, small size, and high performance. It is effective when applied to electronic equipment.

本発明の一実施の形態におけるインダクタンス部品の斜視図The perspective view of the inductance component in one embodiment of this invention 図１のＡ−Ａ線断面図AA line sectional view of FIG. 本発明の一実施の形態におけるインダクタンス部品の製造方法を説明するための図The figure for demonstrating the manufacturing method of the inductance components in one embodiment of this invention 従来のインダクタンス部品の斜視図Perspective view of conventional inductance components

符号の説明Explanation of symbols

１１ 巻胴部
１２ 鍔部
１３ ドラムコア
１４ コイル導線
１５ 実装部
１６ 接続部
１７ 端子電極
１８ 固定刃
１９ 摺動刃 DESCRIPTION OF SYMBOLS 11 Winding body part 12 Gutter part 13 Drum core 14 Coil conductor 15 Mounting part 16 Connection part 17 Terminal electrode 18 Fixed blade 19 Sliding blade

Claims (4)

巻胴部と鍔部を有するドラムコアと、このドラムコアの巻胴部に巻きつけたコイル導線と、実装部と接続部を有する端子電極とを備え、前記コイル導線を前記巻胴部と前記接続部との間から導出し、かつこのコイル導線を前記接続部の外面に沿わせて固定するようにしたインダクタンス部品。 A drum core having a winding drum portion and a flange portion, a coil conductor wound around the winding drum portion of the drum core, and a terminal electrode having a mounting portion and a connection portion, the coil conductor being connected to the winding drum portion and the connection portion And an inductance component which is led out from between and fixed along the outer surface of the connecting portion. 接続部でコイル導線を内角が９０度より小さくなるように折り曲げて、前記接続部にコイル導線を固定するようにした請求項１記載のインダクタンス部品。 The inductance component according to claim 1, wherein the coil conductor is bent at the connection portion so that the inner angle is smaller than 90 degrees, and the coil conductor is fixed to the connection portion. 接続部の外面に沿わせる長さを、前記接続部の幅よりも短くした請求項１記載のインダクタンス部品。 The inductance component according to claim 1, wherein a length along the outer surface of the connection portion is shorter than a width of the connection portion. 巻胴部と鍔部を有するドラムコアの前記巻胴部にコイル導線を巻きつける工程と、これを実装部と接続部を有する端子電極に取り付ける工程と、前記コイル導線を前記巻胴部と前記接続部との間から導出し、前記コイル導線を所定の位置で切断する切断工程とを備え、前記切断工程において切断と同時に前記コイル導線を曲げることにより前記接続部の外面に沿わせて固定するようにしたインダクタンス部品の製造方法。 A step of winding a coil conductor around the winding drum portion of the drum core having a winding drum portion and a flange portion, a step of attaching the coil conductor to a terminal electrode having a mounting portion and a connecting portion, and the connection of the coil lead wire to the winding drum portion And cutting the coil conductor at a predetermined position, and fixing the coil conductor along the outer surface of the connecting portion by bending the coil conductor simultaneously with the cutting in the cutting step. The manufacturing method of the inductance component made into.
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