JP2006114536A - Coil component and its manufacturing method - Google Patents

Coil component and its manufacturing method Download PDF

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JP2006114536A
JP2006114536A JP2004297339A JP2004297339A JP2006114536A JP 2006114536 A JP2006114536 A JP 2006114536A JP 2004297339 A JP2004297339 A JP 2004297339A JP 2004297339 A JP2004297339 A JP 2004297339A JP 2006114536 A JP2006114536 A JP 2006114536A
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magnetic
ring component
mixture
wire ring
powder
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Akiko Namezawa
明子 滑沢
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Tokin Corp
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NEC Tokin Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil component that is reduced in leaked magnetic flux and can be improved in the DC superimposing characteristics by applying a bias magnetic field with a simple structure, and to provide a method of manufacturing the coil component. <P>SOLUTION: A choke coil is constituted of a drum core 1 composed of a magnetic material and winding 3 arranged in the drum core 1. The periphery of the choke coil is molded with a mixture 2 of magnetic material powder and a resin. In addition, the admixture 2 is magnetically oriented by means of an external magnetic field, and the mixing ratio of the resin in the admixture 2 is adjusted to 10-40 wt% with respect to 100 wt% of the magnetic material powder. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、主として、携帯端末機器、電源機器などの電源部分に使用される線輪部品およびその製造方法に関する。   The present invention mainly relates to a wire ring part used for a power supply part of a mobile terminal device, a power supply device and the like, and a manufacturing method thereof.

従来の線輪部品について、以下に説明する。図６は、特許文献１に記載されている、従来のインダクタンス素子の説明図である。図６（ａ）は全体図であり、図６（ｂ）は、断面図である。   Conventional wire ring parts will be described below. FIG. 6 is an explanatory diagram of a conventional inductance element described in Patent Document 1. In FIG. FIG. 6A is an overall view, and FIG. 6B is a cross-sectional view.

図６（ｂ）に示すように、インダクタンス素子は、板状のフェライトコア１１に、巻線１２を施し、ついで全体を磁性体粉末と樹脂との混和物１３ｂにてモールドして形成されたインダクタンス素子である。   As shown in FIG. 6 (b), the inductance element is an inductance formed by applying a winding 12 to a plate-like ferrite core 11 and then molding the whole with a mixture 13b of magnetic powder and resin. It is an element.

図６のインダクタンス素子の、直流重畳特性を、図２の従来（波線）にて示す。所定の直流重畳電流まではインダクタンス値が、ほぼ平坦であるが、平坦な領域以降は急激に低下する特性を示す。   The direct current superimposition characteristic of the inductance element of FIG. 6 is shown by the prior art (dashed line) of FIG. The inductance value is substantially flat up to a predetermined DC superimposed current, but shows a characteristic that it rapidly decreases after the flat region.

特開２００２−１４１２２７JP 2002-141227 A

従来の線輪部品では、以下の問題点があった。第１に、特許文献１のインダクタンス素子では、板状の磁性体コア１１に、巻線をそのまま施すので、磁気回路としての効率が悪く、周りを磁性体粉末と樹脂との混和物１３ｂで覆っていても、インダクタンス素子周辺からの漏れ磁束の量が、大きいという問題点があった。また、直流重畳特性の直流電流の延びの、より大きいものが求められている。直流重畳特性を改善する方法としてバイアス磁界を与える方法があるが、特許文献１のような磁性体粉と樹脂との混和物でモールドした構成では、バイアス磁界を与えることが難しく、このため直流重畳特性での直流電流が延びないという問題点があった。   The conventional wire ring parts have the following problems. First, in the inductance element of Patent Document 1, since the winding is applied to the plate-like magnetic core 11 as it is, the efficiency as a magnetic circuit is poor, and the periphery is covered with a mixture 13b of magnetic powder and resin. However, there is a problem in that the amount of magnetic flux leakage from the periphery of the inductance element is large. Further, there is a demand for a larger DC current extension with DC superimposition characteristics. Although there is a method of applying a bias magnetic field as a method for improving the DC superimposition characteristics, it is difficult to apply a bias magnetic field in the configuration molded with a mixture of magnetic powder and resin as in Patent Document 1, and therefore DC superposition is difficult. There was a problem that the direct current in characteristics did not extend.

本発明は、上記の課題を解決し、漏れ磁束を低減した、かつ簡単な構造にて、バイアス磁界をかけて直流重畳特性を改善できる線輪部品およびその製造方法を提供することである。   An object of the present invention is to solve the above-described problems, and to provide a wire ring component and a method of manufacturing the same that can improve DC superposition characteristics by applying a bias magnetic field with a simple structure with reduced leakage magnetic flux.

即ち、本発明は、磁性体材料からなる磁芯と、前記磁芯と巻線とで構成された線輪部品であって、前記線輪部品は、磁性材料粉末と樹脂との混和物にて前記磁芯と巻線の周辺がモールドされ、かつ前記混和物が、外部磁場によって磁場配向された線輪部品である。   That is, the present invention is a wire ring component composed of a magnetic core made of a magnetic material, and the magnetic core and a winding, and the wire ring component is made of a mixture of magnetic material powder and resin. A wire ring component in which the periphery of the magnetic core and the winding is molded, and the mixture is magnetically oriented by an external magnetic field.

また、本発明は、前記混和物は、磁性材料粉末と樹脂との比率が、混和物１００ｗｔ％に対して、樹脂は１０ｗｔ％以上から４０ｗｔ％以下の範囲の線輪部品である。   In the present invention, the blend is a wire ring component in which the ratio of the magnetic material powder and the resin is in the range of 10 wt% to 40 wt% with respect to 100 wt% of the blend.

また、本発明は、前記磁性材料粉末は、軟磁性金属粉末と永久磁石粉末とが混合されており、磁性材料粉末１００ｗｔ％に対して、軟磁性金属粉末が６０ｗｔ％以上から９０ｗｔ％以下の範囲であり、永久磁石粉末が１０ｗｔ％以上から４０ｗｔ％以下の範囲の線輪部品である。   In the present invention, the magnetic material powder is a mixture of a soft magnetic metal powder and a permanent magnet powder, and the soft magnetic metal powder is in a range of 60 wt% to 90 wt% with respect to 100 wt% of the magnetic material powder. The permanent magnet powder is a wire ring component in the range of 10 wt% to 40 wt%.

また、本発明は、前記軟磁性金属粉末は、その材質をアモルファス粉末とし、ＣｏＮｂＺｒ系軟磁性合金、またはＦｅＺｒＢＣｕ系軟磁性合金、またはＦｅＳｉＢ系軟磁性合金、またはＦｅＣｏＺｒＢＣｕ系軟磁性合金の内、少なくとも１つ以上を含む線輪部品である。   According to the present invention, the soft magnetic metal powder is made of an amorphous powder, and at least of a CoNbZr-based soft magnetic alloy, an FeZrBCu-based soft magnetic alloy, an FeSiB-based soft magnetic alloy, or an FeCoZrBCu-based soft magnetic alloy. A wire ring component including one or more.

また、本発明は、前記永久磁石粉末は、その材質を、ＳｍＣｏ系磁石、またはフェライト系磁石、または ＦｅＣｒＣｏ系磁石、ならびにＮｄＦｅＢ系磁石の内、少なくとも１つ以上とする線輪部品である。   In the present invention, the permanent magnet powder is a wire ring component made of at least one of SmCo magnet, ferrite magnet, FeCrCo magnet, and NdFeB magnet.

また、本発明は、前記線輪部品について磁芯の平面方向での幅寸法対高さ寸法の比を２．０以上とする線輪部品である。   Moreover, this invention is a wire ring component which sets the ratio of the width dimension in the plane direction of a magnetic core to the height dimension about 2.0 or more about the said wire ring component.

また、本発明は、磁性体材料からなる磁芯と、巻線とで構成された線輪部品の製造方法において、前記巻線が配置された磁芯を多数個取りの（モールド用）金型へ個々に配置し、磁性材料粉末と樹脂とから成る混和物のペースト状態の流動体を前記金型へ流し込み、ついで、前記金型の外部に設けた外部磁場印加手段を用いて、前記注入した混和物を磁場配向し、かつ乾燥処理により前記混和物を硬化させて、前記磁芯の周辺部分を磁性材料粉末と樹脂との混和物にて周辺をモールドする線輪部品の製造方法である。   The present invention also relates to a method of manufacturing a wire ring component composed of a magnetic core made of a magnetic material and a winding, and a mold (for molding) having a large number of magnetic cores on which the winding is disposed. The fluid in the paste state of the mixture composed of the magnetic material powder and the resin is poured into the mold, and then injected using an external magnetic field applying means provided outside the mold. This is a method of manufacturing a wire ring part in which the admixture is magnetically oriented and the admixture is cured by a drying process, and the periphery of the magnetic core is molded with an admixture of magnetic material powder and resin.

本発明によれば、漏れ磁束を低減した、かつ簡単な構造にて、バイアス磁界をかけて直流重畳特性を改善できる線輪部品およびその製造方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, a wire ring component which can improve a direct current | flow superimposition characteristic by applying a bias magnetic field with the simple structure which reduced the leakage magnetic flux, and its manufacturing method can be provided.

本発明の実施の形態による線輪部品およびその製造方法について、以下説明する。   The wire ring component and the manufacturing method thereof according to the embodiment of the present invention will be described below.

本発明の線輪部品は、磁性体材料からなる磁芯と、前記磁芯と巻線とで構成された線輪部品であって、前記線輪部品は、性材料粉末と樹脂との混和物にて前記磁芯と巻線の周辺がモールドされ、かつ前記混和物が、外部磁場によって磁場配向された線輪部品である。   The wire ring component of the present invention is a wire ring component composed of a magnetic core made of a magnetic material and the magnetic core and a winding, and the wire ring component is an admixture of a sex material powder and a resin. A wire ring component in which the periphery of the magnetic core and the winding is molded and the mixture is magnetically oriented by an external magnetic field.

ここで、前記磁性体材料からなる磁芯の１例として、Ｍｎ−Ｚｎ系あるいはＮｉ−Ｚｎ系フェライト材料からなるドラム型磁性体コアがある。   Here, as an example of the magnetic core made of the magnetic material, there is a drum type magnetic core made of Mn—Zn or Ni—Zn ferrite material.

ここで、本発明の線輪部品は、以下の製造方法によって作製される。即ち、磁性体材料からなる磁芯と、前記磁芯の中に配置された巻線とで構成された線輪部品の製造方法であって、前記巻線が配置された磁芯を、多数個取りの金型へ、個々に配置し、磁性材料粉末と樹脂とから成る混和物のペースト状態の流動体を、前記金型へ流し込み、ついで、前記金型の外部に外部磁場印加手段を設けて、前記注入した混和物を磁場配向し、かつ乾燥処理して前記混和物を硬化させて、前記磁芯の周辺部分を磁性材料粉末と樹脂との混和物にてモールドする線輪部品の製造方法である。   Here, the wire ring component of the present invention is manufactured by the following manufacturing method. That is, a method for manufacturing a wire ring component including a magnetic core made of a magnetic material and a winding disposed in the magnetic core, wherein a plurality of magnetic cores having the winding are disposed. Individually placed in the mold, and a paste-like fluid composed of magnetic material powder and resin is poured into the mold, and then an external magnetic field applying means is provided outside the mold. A method of manufacturing a wire ring component in which the injected mixture is magnetically oriented and dried to cure the mixture, and the peripheral portion of the magnetic core is molded with the mixture of magnetic material powder and resin. It is.

ここで、前記金型は、その材質を非磁性材料とする。例えば、樹脂材料、あるいはステンレス材料とする。   Here, the mold is made of a non-magnetic material. For example, a resin material or a stainless material is used.

ここで、前記の金型の外に配置する外部磁場印加手段としては、その１例として、厚み方向に着磁した、板状磁石が使用される。前記板状磁石によって、磁性材料粉末と樹脂との混和物は、磁場配向される。   Here, as an example of the external magnetic field applying means arranged outside the mold, a plate magnet magnetized in the thickness direction is used. The mixture of the magnetic material powder and the resin is magnetically oriented by the plate magnet.

ここで、前記混和物は、磁性材料粉末と樹脂との比率が、混和物１００ｗｔ％に対して、樹脂は１０ｗｔ％以上から４０ｗｔ％以下の範囲の線輪部品である。   Here, the blend is a wire ring component in which the ratio of the magnetic material powder and the resin is in the range of 10 wt% to 40 wt% with respect to 100 wt% of the blend.

この場合、樹脂が１０ｗｔ％未満であると、磁性体材料粉末と樹脂を混合した場合、混和物がペースト状とならず、作業性が悪いという不具合がある。また、樹脂が４０ｗｔ％を越えると、磁性体材料粉末と樹脂を混合した場合、混和物内での磁性体材料粉末の量が少なく、充分な、初期インダクタンスが得られないという問題点がある。   In this case, when the resin is less than 10 wt%, when the magnetic material powder and the resin are mixed, there is a problem that the admixture does not become a paste and the workability is poor. On the other hand, when the resin exceeds 40 wt%, there is a problem that when the magnetic material powder and the resin are mixed, the amount of the magnetic material powder in the mixture is small and sufficient initial inductance cannot be obtained.

ここで、前記磁性材料粉末は、軟磁性金属粉末と永久磁石粉末とが混合されており、磁性材料粉末１００ｗｔ％に対して、軟磁性金属粉末が６０ｗｔ％以上から９０ｗｔ％以下の範囲であり、永久磁石粉末が１０ｗｔ％以上から４０ｗｔ％以下の範囲である。   Here, the magnetic material powder is a mixture of soft magnetic metal powder and permanent magnet powder, the soft magnetic metal powder is in the range of 60 wt% or more to 90 wt% or less with respect to 100 wt% of the magnetic material powder, The permanent magnet powder ranges from 10 wt% to 40 wt%.

この場合、軟磁性金属粉末が６０ｗｔ％未満では軟磁性金属粉末の分量が少なくなり、充分な初期インダクタンスが得られず、また磁芯の周辺での、漏れ磁束を低減する、ヨーク材料としての作用が低下し、また軟磁性金属粉末が９０ｗｔ％を越えると、永久磁石粉末の分量が少なくなり、磁場配向した場合の起磁力が低下するという不具合が発生する。   In this case, if the amount of the soft magnetic metal powder is less than 60 wt%, the amount of the soft magnetic metal powder is reduced, a sufficient initial inductance cannot be obtained, and the leakage magnetic flux around the magnetic core is reduced. If the soft magnetic metal powder exceeds 90 wt%, the amount of the permanent magnet powder is reduced, and the magnetomotive force is lowered when the magnetic field is oriented.

ここで、前記軟磁性金属粉末は、その材質をアモルファス粉末とし、ＣｏＮｂＺｒ系軟磁性合金、またはＦｅＺｒＢＣｕ系軟磁性合金、またはＦｅＳｉＢ系軟磁性合金、またはＦｅＣｏＺｒＢＣｕ系軟磁性合金の内、少なくとも１つ以上とする。   Here, the soft magnetic metal powder is made of an amorphous powder, and at least one of CoNbZr-based soft magnetic alloy, FeZrBCu-based soft magnetic alloy, FeSiB-based soft magnetic alloy, or FeCoZrBCu-based soft magnetic alloy. And

また、永久磁石粉末が１０ｗｔ％未満では、永久磁石粉末の分量が少なくなり、磁場配向した場合の起磁力が低下し、永久磁石粉末が４０ｗｔ％を越えると、軟磁性金属粉末の分量が少なくなり、充分な、初期インダクタンスが得られず、また、周辺での、漏れ磁束を低減する、ヨーク材料としての作用が低下するという不具合が発生する。   Further, if the permanent magnet powder is less than 10 wt%, the amount of the permanent magnet powder decreases, the magnetomotive force when the magnetic field is oriented decreases, and if the permanent magnet powder exceeds 40 wt%, the amount of the soft magnetic metal powder decreases. Insufficient initial inductance cannot be obtained, and there are problems that the leakage magnetic flux around the periphery is reduced and the action as a yoke material is reduced.

また、ここで、前記永久磁石粉末は、その材質をＳｍＣｏ系磁石、またはフェライト系磁石、または ＦｅＣｒＣｏ系磁石、ならびにＮｄＦｅＢ系磁石の内の少なくとも１以上が選択される。   Here, the material of the permanent magnet powder is selected from at least one of SmCo magnets, ferrite magnets, FeCrCo magnets, and NdFeB magnets.

前記線輪部品は、幅寸法対高さ寸法の比を、２．０以上とする線輪部品である。線輪部品の全体の寸法は、１例として、外径６ｍｍ角以下、また高さは３ｍｍ以下とするが、この寸法に限るものでははない。   The said wire ring component is a wire ring component which makes ratio of width dimension to height dimension 2.0 or more. As an example, the overall dimensions of the wire ring part are 6 mm square or less in outer diameter and 3 mm or less in height, but are not limited to this dimension.

図１は、本発明の実施例のチョークコイルの説明図である。図１（ａ）は、チョークコイルの上面図、図１（ｂ）は、図１（ａ）のＡＡ断面図である。図１（ａ）に示すチョークコイルは、ドラムコア１の鍔部１ｂの間に巻線３が巻かれ、側面と片側面とが、 磁性体材料と樹脂の混和物２にてモールドされている。   FIG. 1 is an explanatory diagram of a choke coil according to an embodiment of the present invention. FIG. 1A is a top view of the choke coil, and FIG. 1B is a cross-sectional view taken along line AA in FIG. In the choke coil shown in FIG. 1A, a winding 3 is wound between the flanges 1b of the drum core 1, and the side surface and one side surface are molded with a mixture 2 of magnetic material and resin.

ここで、ドラムコア１は、その材質をＮｉ−Ｚｎフェライト材料としている。また、磁性材料粉末と樹脂の混和物２において、磁性材料粉末は、軟磁性金属粉末と永久磁石粉末とが混合されており、ここで、前記軟磁性金属粉末はアモルファス粉末とし、その材質をＦｅＳｉＢ系軟磁性合金とし、また前記永久磁石粉末は、ＳｍＣｏ系磁石を選択した。   Here, the drum core 1 is made of a Ni—Zn ferrite material. In the mixture 2 of magnetic material powder and resin, the magnetic material powder is a mixture of a soft magnetic metal powder and a permanent magnet powder, wherein the soft magnetic metal powder is an amorphous powder and the material thereof is FeSiB. SmCo-based magnet was selected as the permanent magnet powder.

また、磁性材料粉末と樹脂の混和物２において、磁性材料粉末と樹脂との比率は、混和物１００ｗｔ％に対して、樹脂は１５ｗｔ％とした。   Further, in the mixture 2 of magnetic material powder and resin, the ratio of the magnetic material powder and resin was 15 wt% with respect to 100 wt% of the mixture.

前記軟磁性金属粉末にて、アモルファス粉末であるＦｅＳｉＢ系軟磁性合金を７５ｗｔ％、永久磁石粉末を２５ｗｔ％の配合とした。   In the soft magnetic metal powder, an amorphous powder FeSiB-based soft magnetic alloy was mixed at 75 wt% and permanent magnet powder was mixed at 25 wt%.

また、前記チョークコイルの外径寸法は、外径３．５ｍｍ角、また高さは１．５ｍｍとした。   The choke coil had an outer diameter of 3.5 mm square and a height of 1.5 mm.

ここで、本発明のチョークコイルの製造方法について、以下に説明する。図３は、本発明のチョークコイルの製造方法の実施例の説明図である。図３（ａ）は、ドラムコア１００の説明図、図３（ｂ）は、ドラムコア１００の中芯のまわりに巻線３００を巻いた半製品の状態の説明図、図３（ｃ）は、金型２００の所定の場所に、磁性材料粉末と樹脂との混和物を注入する状態の説明図、図３（ｄ）は、金型２００の、磁性材料粉末と樹脂との混和物が注入された所定の場所に、図３（ｂ）の半製品をセットした状態の説明図である。ここで、磁性材料粉末の中での永久磁石粉末は、あらかじめ着磁された状態である。   Here, the manufacturing method of the choke coil of this invention is demonstrated below. FIG. 3 is an explanatory diagram of an embodiment of a method for manufacturing a choke coil according to the present invention. 3A is an explanatory diagram of the drum core 100, FIG. 3B is an explanatory diagram of a semi-finished product in which a winding 300 is wound around the core of the drum core 100, and FIG. FIG. 3 (d) shows a state where a mixture of magnetic material powder and resin is injected into a predetermined place of the mold 200, and FIG. 3 (d) shows that the mixture of magnetic material powder and resin of the mold 200 is injected. It is explanatory drawing of the state which set the semi-finished product of FIG.3 (b) in the predetermined place. Here, the permanent magnet powder in the magnetic material powder is magnetized in advance.

また、図４は、図３以降の本発明の実施例の説明図である。図４において、板状磁石４００は、板の厚み方向に着磁されており、金型２００に、図３（ｂ）の半製品を、全部投入した後、金型２００に配置して、磁性材料粉末と樹脂との混和物を磁場配向する。ついで、金型全体を加熱乾燥し、混和物を乾燥硬化させる。   FIG. 4 is an explanatory diagram of the embodiment of the present invention after FIG. In FIG. 4, a plate-like magnet 400 is magnetized in the thickness direction of the plate. After all of the semi-finished product of FIG. The mixture of the material powder and the resin is magnetically oriented. Next, the entire mold is heated and dried to dry and cure the mixture.

また、図５は、図４以降の本発明のチョークコイルの製造方法の実施例の説明図である。図５（ａ）は、端子接着治具に、リードフレーム５００をセットし、接着剤を塗布した状態の説明図、図５（ｂ）は、リードフレーム５００に半製品をセットした状態の説明図、図５（ｃ）は、チョークコイルの完成品での上面図、図５（ｄ）は、チョークコイルの完成品での側面図である。   FIG. 5 is an explanatory view of an embodiment of the choke coil manufacturing method of the present invention after FIG. FIG. 5A is an explanatory diagram of a state in which the lead frame 500 is set on a terminal bonding jig and an adhesive is applied, and FIG. 5B is an explanatory diagram of a state in which a semi-finished product is set on the lead frame 500. FIG. 5C is a top view of the finished choke coil, and FIG. 5D is a side view of the finished choke coil.

図２は、このようにして作製された本発明の実施例のチョークコイルの直流重畳特性と、従来のチョークコイルの直流重畳特性の比較特性図である。実線が、本発明の直流重畳特性である。本発明のチョークコイルでは、混和物が磁化されており、バイアス磁界を発生するので、直流重畳特性が、従来の直流重畳特性より、直流重畳電流が延びている。なお、本発明のチョークコイルでは、ドラムコアを用いており、磁気的な効率が、従来の板状のコアよりも改善され、混和物２によって、充分漏れ磁束が低減されている。   FIG. 2 is a comparison characteristic diagram of the DC superposition characteristics of the choke coil according to the embodiment of the present invention thus manufactured and the DC superposition characteristics of the conventional choke coil. The solid line is the direct current superimposition characteristic of the present invention. In the choke coil of the present invention, since the admixture is magnetized and generates a bias magnetic field, the DC superimposition characteristic is longer than the conventional DC superposition characteristic. In the choke coil of the present invention, a drum core is used, the magnetic efficiency is improved as compared with the conventional plate-shaped core, and the leakage flux is sufficiently reduced by the mixture 2.

また、図１の本発明のチョークコイルは、混和物が、磁芯の側面と上面にモールドされていたが、その他の状態、例えば側面のみが混和物でモールドされておても良く、また磁芯全体が混和物でモールドされていても、同様の効果が得られる。   In the choke coil of the present invention shown in FIG. 1, the admixture is molded on the side surface and the upper surface of the magnetic core, but other states, for example, only the side surface may be molded with the admixture. The same effect can be obtained even if the entire core is molded with a mixture.

以上の実施例の説明では、線輪部品の例として、チョークコイルの例を上げたが、 チョークコイル以外の、線輪部品、例えばトランス等も、本発明の適用が可能である。   In the above description of the embodiment, the example of the choke coil is given as an example of the wire ring component, but the present invention can also be applied to a wire ring component other than the choke coil, such as a transformer.

本発明の実施例１のチョークコイルの説明図。図１（ａ）は、チョークコイルの上面図、図１（ｂ）は、図１（ａ）でのＡＡ断面図。1 is an explanatory diagram of a choke coil according to a first embodiment of the present invention. 1A is a top view of the choke coil, and FIG. 1B is a cross-sectional view taken along line AA in FIG. 本発明の実施例のチョークコイルの直流重畳特性と、従来のチョークコイルの直流重畳特性の比較図。The comparison figure of the direct current superimposition characteristic of the choke coil of the Example of this invention, and the direct current superimposition characteristic of the conventional choke coil. 本発明のチョークコイルの製造方法の実施例の説明図。図３（ａ）は、ドラムコアの説明図、 図３（ｂ）は、ドラムコアの中芯のまわりに巻線を巻いた半製品の状態の説明図、図３（ｃ）は、金型の所定の場所に、樹脂を注入する状態の説明図、図３（ｄ）は、金型樹脂が注入された所定の場所に、図３（ｂ）の半製品をセットした状態の説明図。Explanatory drawing of the Example of the manufacturing method of the choke coil of this invention. 3A is an explanatory diagram of the drum core, FIG. 3B is an explanatory diagram of a state of a semi-finished product in which a winding is wound around the core of the drum core, and FIG. 3C is a predetermined mold. FIG. 3D is an explanatory diagram of a state in which the semi-finished product of FIG. 3B is set at a predetermined location where the mold resin is injected. 図３以降の本発明のチョークコイルの製造方法の実施例の説明図。FIG. 4 is an explanatory diagram of an embodiment of the method for manufacturing a choke coil of the present invention after FIG. 3. 図４以降の本発明のチョークコイルの製造方法の実施例の説明図。図５（ａ）は、端子接着治具に、リードフレームをセットし、接着剤を塗布した状態の説明図、図５（ｂ）は、リードフレームに半製品をセットした状態の説明図、図５（ｃ）は、チョークコイルの完成品での上面図、図５（ｄ）は、チョークコイルの完成品での側面図。Explanatory drawing of the Example of the manufacturing method of the choke coil of this invention after FIG. FIG. 5A is an explanatory view of a state where a lead frame is set on a terminal bonding jig and an adhesive is applied, and FIG. 5B is an explanatory view of a state where a semi-finished product is set on the lead frame. FIG. 5C is a top view of the finished choke coil, and FIG. 5D is a side view of the finished choke coil. 従来のインダクタンス素子の説明図。図６（ａ）は全体図、図６（ｂ）は断面図。Explanatory drawing of the conventional inductance element. 6A is an overall view, and FIG. 6B is a cross-sectional view.

符号の説明Explanation of symbols

１，１００ ドラムコア
１ａ 中芯
１ｂ 鍔部
２，１３ｂ （磁性材料と樹脂の）混和物
３，１２，３００ 巻線
１１ 磁性体コア
１３ａ スリーブ
２００ 金型
４００ 板状磁石
５００ リードフレーム
６００ チョークコイル DESCRIPTION OF SYMBOLS 1,100 Drum core 1a Core 1b Collar part 2,13b Mixture (magnetic material and resin) 3,12,300 Winding 11 Magnetic body 13a Sleeve 200 Mold 400 Plate magnet 500 Lead frame 600 Choke coil

Claims (7)

磁性体材料からなる磁芯と、前記磁芯と巻線とで構成された線輪部品であって、前記線輪部品は、磁性材料粉末と樹脂との混和物にて前記磁芯と巻線の周辺がモールドされ、かつ前記混和物が、外部磁場によって磁場配向されたことを特徴とする線輪部品。   A wire ring component composed of a magnetic core made of a magnetic material, and the magnetic core and winding, wherein the wire ring component is made of a mixture of magnetic material powder and resin. A wire ring component characterized in that the periphery of the wire is molded and the admixture is magnetically oriented by an external magnetic field. 前記混和物は、磁性材料粉末と樹脂との比率が、混和物１００ｗｔ％に対して、樹脂は１０ｗｔ％以上から４０ｗｔ％以下の範囲であることを特徴とする請求項１に記載の線輪部品。   2. The wire ring component according to claim 1, wherein a ratio of the magnetic material powder and the resin in the mixture is in a range of 10 wt% to 40 wt% with respect to 100 wt% of the mixture. . 前記磁性材料粉末は、軟磁性金属粉末と永久磁石粉末とが混合されており、磁性材料粉末１００ｗｔ％に対して、軟磁性金属粉末が６０ｗｔ％以上から９０ｗｔ％以下の範囲であり、永久磁石粉末が１０ｗｔ％以上から４０ｗｔ％以下の範囲であることを特徴とする請求項２に記載の線輪部品。   The magnetic material powder is a mixture of soft magnetic metal powder and permanent magnet powder, and the soft magnetic metal powder is in the range of 60 wt% to 90 wt% with respect to 100 wt% of the magnetic material powder. The wire ring component according to claim 2, wherein the range is from 10 wt% to 40 wt%. 前記軟磁性金属粉末は、その材質を、アモルファス粉末とし、 ＣｏＮｂＺｒ系軟磁性合金、またはＦｅＺｒＢＣｕ系軟磁性合金、またはＦｅＳｉＢ系軟磁性合金、またはＦｅＣｏＺｒＢＣｕ系軟磁性合金の内、少なくとも１つ以上を含むことを特徴とする請求項３に記載の線輪部品。   The soft magnetic metal powder is made of an amorphous powder and includes at least one of a CoNbZr-based soft magnetic alloy, a FeZrBCu-based soft magnetic alloy, a FeSiB-based soft magnetic alloy, or a FeCoZrBCu-based soft magnetic alloy. The wire ring component according to claim 3. 前記永久磁石粉末は、ＳｍＣｏ系磁石、またはフェライト系磁石、または ＦeＣｒＣｏ系磁石、ならびにＮｄＦｅＢ系磁石の内、少なくとも１つ以上を含むことを特徴とする請求項３に記載の線輪部品。   The wire ring component according to claim 3, wherein the permanent magnet powder includes at least one of an SmCo-based magnet, a ferrite-based magnet, an FeCrCo-based magnet, and an NdFeB-based magnet. 前記線輪部品について、磁芯の平面方向の幅寸法対高さ寸法の比を、２．０以上とすることを特徴とする請求項１ないし５のいずれかに記載の線輪部品。   The wire ring component according to any one of claims 1 to 5, wherein a ratio of a width dimension to a height dimension in a planar direction of the magnetic core is set to 2.0 or more. 磁性体材料からなる磁芯と、巻線とで構成された線輪部品の製造方法において、前記巻線が配置された磁芯を、多数個取りの金型へ個々に配置し、磁性材料粉末と樹脂とから成る混和物のペースト状態の流動体を、前記金型へ流し込み、ついで、前記金型の外部に設けた外部磁場の印加手段を用いて、前記注入した混和物を磁場配向し、かつ乾燥処理により前記混和物を硬化させて、前記磁芯の周辺部分を、磁性材料粉末と樹脂との混和物にてモールドすることを特徴とする線輪部品の製造方法。   In a method of manufacturing a wire ring component composed of a magnetic core made of a magnetic material and a winding, the magnetic core on which the winding is arranged is individually arranged in a multi-piece mold, and a magnetic material powder A paste-like fluid composed of a mixture of resin and resin is poured into the mold, and then the injected mixture is magnetically oriented using an external magnetic field applying means provided outside the mold, And the said mixture is hardened by a drying process, The peripheral part of the said magnetic core is molded with the mixture of magnetic material powder and resin, The manufacturing method of a ring component characterized by the above-mentioned.
JP2004297339A 2004-10-12 2004-10-12 Coil component and its manufacturing method Pending JP2006114536A (en)

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JP2009004670A (en) * 2007-06-25 2009-01-08 Nec Tokin Corp Drum-type inductor and its manufacturing method
JP2009010093A (en) * 2007-06-27 2009-01-15 Tdk Corp Manufacturing method and manufacturing device for coil component

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JPH01238107A (en) * 1988-03-18 1989-09-22 Sony Corp Magnetizing method of bias choke coil
JPH0732918U (en) * 1993-12-03 1995-06-16 東光株式会社 Linearity coil
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JP2003100509A (en) * 2001-09-27 2003-04-04 Nec Tokin Corp Magnetic core and inductance part using the same
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Publication number Priority date Publication date Assignee Title
JP2009004670A (en) * 2007-06-25 2009-01-08 Nec Tokin Corp Drum-type inductor and its manufacturing method
JP2009010093A (en) * 2007-06-27 2009-01-15 Tdk Corp Manufacturing method and manufacturing device for coil component
US7843301B2 (en) 2007-06-27 2010-11-30 Tdk Corporation Coil component and method and apparatus for producing the same

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