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JP2006332245A - Coil component - Google Patents

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JP2006332245A
JP2006332245A JP2005152384A JP2005152384A JP2006332245A JP 2006332245 A JP2006332245 A JP 2006332245A JP 2005152384 A JP2005152384 A JP 2005152384A JP 2005152384 A JP2005152384 A JP 2005152384A JP 2006332245 A JP2006332245 A JP 2006332245A
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resin
wire ring
metal powder
soft magnetic
magnetic metal
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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 low-cost coil component, and also to reduce leak magnetic flux by materializing stable direct-current superposition characteristics with simple structure. <P>SOLUTION: By forming a mold with the mixture of soft magnetism metallic powder and resin, sufficient direct-current superposition characteristics are made possible, so that the circumference of an open magnetic circuit component comprising a drum type magnetic body core 1 and winding 3 wound around the core 1a of the drum type magnetic body core 1 may be made into a closed magnetic circuit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、主として、携帯端末機器などの小型電化製品の電源装置に使用されるのに好適な線輪部品に関する。   The present invention mainly relates to a wire ring component suitable for use in a power supply device of a small electrical appliance such as a portable terminal device.

図9は、従来の線輪部品の説明図である。図9(a)は斜視図、図9(b)は、図9(a)のAA断面図である。従来、ドラム型磁性体コアを使用した線輪部品は、図9に示すように、導電性線材を巻線3を巻いたドラム型磁性体コア100にスリーブ型磁性体コア4を組み合わせた構造であり、前記ドラム型磁性体コア100とスリーブ型磁性体コア4が組み合わされることで閉磁路構成をとっている。また、ドラム型磁性体コア100とスリーブ型磁性体コア4間の接着の際、両コア間にギャップ5を形成することによりインダクタンス値の調整を行っている。   FIG. 9 is an explanatory diagram of a conventional wire ring component. FIG. 9A is a perspective view, and FIG. 9B is a cross-sectional view taken along the line AA in FIG. 9A. Conventionally, a wire ring component using a drum-type magnetic core has a structure in which a sleeve-type magnetic core 4 is combined with a drum-type magnetic core 100 in which a winding 3 is wound with a conductive wire as shown in FIG. The drum type magnetic core 100 and the sleeve type magnetic core 4 are combined to form a closed magnetic circuit configuration. Further, when the drum-type magnetic core 100 and the sleeve-type magnetic core 4 are bonded, the inductance value is adjusted by forming a gap 5 between the cores.

更に、特許文献1には、フェライト焼結体または金属磁性体粉末からなる圧粉磁芯の周囲に巻線が巻回され、それを覆うようにして磁性体粉末と樹脂とからなる磁芯が設けられた線輪部品について記載されている。   Further, in Patent Document 1, a winding is wound around a powder magnetic core made of a ferrite sintered body or metal magnetic powder, and a magnetic core made of magnetic powder and resin is covered so as to cover it. It describes about the provided wire ring parts.

特開2001−185421号公報JP 2001-185421 A

しかしながら、図9に示した従来のドラム型磁性体コア100とスリーブ型磁性体コア4を使用した線輪部品には、次のような欠点がある。即ち、必要とするインダクタンス値を得るためにはドラム型磁性体コア100とスリーブ型磁性体コア4との間に一定のギャップ5を形成する必要があり、狭ギャップになるほど磁性体コアの寸法がばらつき、ドラム型磁性体コア100及びスリーブ型磁性体コア4の位置決めが難しく、安定したギャップ5の形成が困難となり、量産時のばらつきが大きくなる。   However, the conventional wire ring component using the drum type magnetic core 100 and the sleeve type magnetic core 4 shown in FIG. 9 has the following drawbacks. That is, in order to obtain the required inductance value, it is necessary to form a certain gap 5 between the drum type magnetic core 100 and the sleeve type magnetic core 4, and the size of the magnetic core becomes smaller as the gap becomes narrower. Variation, it is difficult to position the drum-type magnetic core 100 and the sleeve-type magnetic core 4, it becomes difficult to form a stable gap 5, and variations during mass production increase.

また、ドラム型磁性体コア100とスリーブ型磁性体コア4間にギャップ5を形成しているため、漏れ磁束の量が大きいという問題点があった。また、コストへの影響が大きい2つの磁性体コアを使用しているため、低コスト化の障害になるという問題点があった。また、特許文献1に記載の線輪部品は、コンポジット磁性材料の磁性体が、通常の鉄系(FeSi系)磁性粉のため、透磁率の値が十分ではなく、十分な直流重畳特性が得られないという問題点があった。   Further, since the gap 5 is formed between the drum type magnetic core 100 and the sleeve type magnetic core 4, there is a problem that the amount of leakage magnetic flux is large. In addition, since the two magnetic cores having a large influence on the cost are used, there is a problem that it becomes an obstacle to cost reduction. Further, the wire ring component described in Patent Document 1 has a magnetic permeability value that is not sufficient because the magnetic material of the composite magnetic material is a normal iron-based (FeSi-based) magnetic powder, and sufficient DC superposition characteristics are obtained. There was a problem that it was not possible.

従って、本発明の課題は、上記の課題を解決し、簡単な構造で安定した直流重畳特性を実現し、また漏れ磁束を低減し、かつ低コストの線輪部品を提供することである。   Accordingly, an object of the present invention is to solve the above problems, to realize a stable direct current superposition characteristic with a simple structure, to reduce a leakage magnetic flux, and to provide a low-cost wire ring component.

本発明は、ドラム型磁性体コアと、前記ドラム型磁性体コアの中芯に巻かれた巻線とで構成された開磁路線輪部品において、閉磁路化のため前記開磁路線輪部品の外形面の露出部が、軟磁性金属粉末と樹脂との混成物にてモールドされた線輪部品である。   The present invention relates to an open magnetic circuit line component composed of a drum type magnetic core and a winding wound around the core of the drum type magnetic core. The exposed portion of the outer surface is a wire ring component molded with a composite of soft magnetic metal powder and resin.


また、本発明は、前記開磁路線輪部品の前記外形面の、前記露出部の一部、または全部を、前記軟磁性金属粉末と、前記樹脂との混成物でモールドされた線輪部品である。

Further, the present invention provides a ring component in which a part or all of the exposed portion of the outer surface of the open magnetic circuit wire component is molded with a composite of the soft magnetic metal powder and the resin. is there.


また、本発明は、前記ドラム型磁性体コアの両端の鍔の外径の大きさが、同じであるか、または異なる線輪部品である。

In the present invention, the outer diameter of the flanges at both ends of the drum type magnetic core is the same or different.


また、本発明は、前記軟磁性金属粉末と樹脂とからなる混成物において、軟磁性金属粉末の配合比率を50重量%以上95重量%未満とし、軟磁性金属粉末と樹脂との配合比率によって透磁率が調整できる線輪部品である。

Further, according to the present invention, in the hybrid material composed of the soft magnetic metal powder and the resin, the blending ratio of the soft magnetic metal powder is set to 50% by weight or more and less than 95% by weight, and depending on the blending ratio of the soft magnetic metal powder and the resin. This is a wire ring component with adjustable magnetic susceptibility.

また、本発明は、前記軟磁性金属粉末は、CoNbZr系、FeZrCuB系、FeSiB系、FeCoZrCuB系、又はNiSiB系アモルファス合金粉末であり、そのうち少なくとも1つ以上を含む線輪部品である。   In the present invention, the soft magnetic metal powder is a CoNbZr-based, FeZrCuB-based, FeSiB-based, FeCoZrCuB-based, or NiSiB-based amorphous alloy powder, and is a wire ring component including at least one of them.


また、本発明は、前記軟磁性金属粉末は、その平均粒径を3〜50μmとし、その粒度分布は、平均粒径に0.2を乗じた値以上から、平均粒径に2.0を乗じた値以下の範囲内の粒子の体積比率が全体の50%以上である線輪部品である。

According to the present invention, the soft magnetic metal powder has an average particle size of 3 to 50 μm, and a particle size distribution of 2.0 or more from the average particle size multiplied by 0.2. This is a wire ring part in which the volume ratio of particles within the range of the multiplied value or less is 50% or more of the whole.

また、本発明は、前記樹脂は熱硬化性樹脂であり、エポキシ樹脂、フェノール樹脂、シリコーン樹脂、ポリウレタン樹脂、又はポリイミド樹脂のうち、少なくとも1つ以上を含む線輪部品である。   In the present invention, the resin is a thermosetting resin, and is a wire ring component including at least one of an epoxy resin, a phenol resin, a silicone resin, a polyurethane resin, or a polyimide resin.

本発明によれば、上記軟磁性金属粉末と樹脂との混成物によるギャップレス構造によって磁気シールドされたことにより、漏れ磁束を低減することが出来る。また、スリーブ型磁性体コアを使用せず、磁性体材料からなるドラム型磁性体コアと巻線とで構成された線輪部品を軟磁性金属粉末と樹脂とからなる混成物のペーストでモールドすることにより、工程的に難しいドラム型磁性体コアとスリーブ型磁性体コア間のギャップ調整必要としない。さらに、軟磁性金属粉末と樹脂との配合比率によって、軟磁性金属粉末と樹脂から混成物のペーストの透磁率を調整し、安定したインダクタンスが得られる。   According to the present invention, magnetic flux shielding can be reduced by being magnetically shielded by the gapless structure made of a mixture of the soft magnetic metal powder and the resin. Also, without using a sleeve-type magnetic core, a wire ring component composed of a drum-type magnetic core made of a magnetic material and a winding is molded with a composite paste made of soft magnetic metal powder and resin. Therefore, it is not necessary to adjust the gap between the drum type magnetic core and the sleeve type magnetic core, which are difficult in terms of process. Further, by adjusting the magnetic permeability of the paste of the composite from the soft magnetic metal powder and the resin according to the blending ratio of the soft magnetic metal powder and the resin, a stable inductance can be obtained.

本発明によれば、軟磁性金属粉末と樹脂からなる混成物のペーストでモールドされた構造をとることにより、安定したインダクタンスが得られ、直流重畳特性の直流電流の範囲を増加させ、特性を実現して漏れ磁束を低減し、かつ低コストの線輪部品を提供できる。   According to the present invention, by adopting a structure molded with a paste of a mixture of soft magnetic metal powder and resin, a stable inductance can be obtained, and the DC current range of the DC superimposition characteristics can be increased and the characteristics can be realized. Thus, the leakage magnetic flux can be reduced and a low-cost wire ring component can be provided.


次に、本発明による線輪部品の実施の形態について具体的に説明する。本発明の線輪部品は、ドラム型磁性体コアと、前記ドラム型磁性体コアの中芯に巻かれた巻線とで構成された開磁路線輪部品において、閉磁路化のため開磁路線輪部品の外形面の露出部の一部、または全部を、軟磁性金属粉末と樹脂との混成物にてモールドされた構造である。

Next, an embodiment of the wire ring component according to the present invention will be specifically described. The wire ring component of the present invention is an open magnetic circuit wire component for making a closed magnetic circuit in an open magnetic circuit wire component composed of a drum type magnetic core and a winding wound around the core of the drum type magnetic core. In this structure, a part or all of the exposed portion of the outer surface of the wheel part is molded with a composite of soft magnetic metal powder and resin.

ここで、開磁路線輪部品のドラム型磁性体コアは、その材質として、Mn−Zn系フェライト材料、あるいはNi−Zn系フェライト材料を使用するが、これに限らない。   Here, the drum-type magnetic core of the open magnetic circuit line component uses Mn—Zn based ferrite material or Ni—Zn based ferrite material as its material, but is not limited thereto.

また、前記混成物での軟磁性金属粉末は、CoNbZr系、FeZrCuB系、FeSiB系、FeCoZrCuB系、又はNiSiB系アモルファス合金粉末であり、そのうち少なくとも1つ以上を含んでいる。なお、混成物における樹脂は熱硬化性樹脂とし、エポキシ樹脂、フェノール樹脂、シリコーン樹脂、ポリウレタン樹脂、又はポリイミド樹脂のうち、少なくとも1つ以上を含んでいる。   The soft magnetic metal powder in the hybrid is a CoNbZr-based, FeZrCuB-based, FeSiB-based, FeCoZrCuB-based, or NiSiB-based amorphous alloy powder, and includes at least one of them. The resin in the hybrid is a thermosetting resin and includes at least one of an epoxy resin, a phenol resin, a silicone resin, a polyurethane resin, or a polyimide resin.

また、軟磁性金属粉末と樹脂とからなる混成物において、軟磁性金属粉末の配合比率を50重量%以上95重量%未満とし、軟磁性金属粉末と樹脂との配合比率によって透磁率を調整している。   Further, in a composite composed of soft magnetic metal powder and resin, the blending ratio of soft magnetic metal powder is set to 50% by weight or more and less than 95% by weight, and the magnetic permeability is adjusted by the blending ratio of soft magnetic metal powder and resin. Yes.

配合比率を50重量%以上95重量%未満と限定した理由は、軟磁性金属粉末の配合比率が50重量%未満であると、磁気特性が劣化する不具合が発生し、また、軟磁性金属粉末の配合比率が95重量%以上であると、混成物が均等に形成できないという不具合が発生するからである。   The reason why the blending ratio is limited to 50% by weight or more and less than 95% by weight is that when the blending ratio of the soft magnetic metal powder is less than 50% by weight, there is a problem that the magnetic properties are deteriorated. This is because if the blending ratio is 95% by weight or more, there is a problem that the hybrid cannot be formed uniformly.

表1に、磁性体粉末の配合比率と初期インダクタンスと定格電流の比較を示す。   Table 1 shows a comparison of the blending ratio of magnetic powder, initial inductance, and rated current.

Figure 2006332245
Figure 2006332245

更に、軟磁性金属粉末の平均粒径を3〜50μmとし、その粒度分布は、平均粒径に0.2を乗じた値以上から、平均粒径に2.0を乗じた値以下の範囲内で、粒子の体積比率が全体の50%以上である。軟磁性金属粉末の平均粒径を3〜50μmと限定した理由は、平均粒径が3μm未満の場合は、軟磁性金属粉末が、お互い凝縮しやすくなり、樹脂と混合した際、分散し難くなるためであり、一方、平均粒径が50μmを越える場合は、軟磁性金属粉末と樹脂との混合が困難となるためである。   Furthermore, the average particle size of the soft magnetic metal powder is 3 to 50 μm, and the particle size distribution is within a range from the value obtained by multiplying the average particle size by 0.2 to the value obtained by multiplying the average particle size by 2.0. Thus, the volume ratio of the particles is 50% or more of the whole. The reason why the average particle size of the soft magnetic metal powder is limited to 3 to 50 μm is that when the average particle size is less than 3 μm, the soft magnetic metal powders are likely to condense with each other and are difficult to disperse when mixed with the resin. On the other hand, when the average particle size exceeds 50 μm, it is difficult to mix the soft magnetic metal powder and the resin.

さらに、本発明の線輪部品の形状の面では、ドラム型磁性体コアの形状を、一方の鍔の外径と、他方の鍔の外径と同一寸法とする場合と、一方の鍔の外径と、他方の鍔の外径と異なる寸法とする場合とがある。ここで、一方の鍔の外径と、他方の鍔の外径とを異なる寸法とする場合は、大きい方の鍔に電極処理を施す等の工程が施される。   Furthermore, in terms of the shape of the wire ring component of the present invention, the drum-type magnetic core has the same outer diameter as one of the flanges and the outer diameter of the other flange. The diameter may be different from the outer diameter of the other ridge. Here, when the outer diameter of one ridge and the outer diameter of the other ridge are different dimensions, a process such as applying an electrode treatment to the larger ridge is performed.

(実施例1)
図1は、本発明の実施例1の線輪部品の説明図である。図1(a)は上面図、図1(b)は、図1(a)のAA断面図である。図1に示す線輪部品は、角型のドラム型磁性体コア1の鍔1bの間に巻線3が巻かれ、側面が、軟磁性金属粉末と樹脂との混成物2にてモールドされている。ここで、ドラム型磁性体コア1は、その材質をNi−Znフェライト材料としている。また、軟磁性金属粉末と樹脂との混成物2において、軟磁性金属粉末はアモルファス粉末とし、その材質はFeSiB系軟磁性合金、また樹脂の材質はエポキシ樹脂を選択した。
Example 1
FIG. 1 is an explanatory diagram of a wire ring component according to a first embodiment of the present invention. FIG. 1A is a top view, and FIG. 1B is a cross-sectional view taken along line AA in FIG. In the wire ring component shown in FIG. 1, the winding 3 is wound between the flanges 1b of the square drum-shaped magnetic core 1, and the side surface is molded with a composite 2 of soft magnetic metal powder and resin. Yes. Here, the drum type magnetic core 1 is made of a Ni—Zn ferrite material. Further, in the composite 2 of the soft magnetic metal powder and the resin, the soft magnetic metal powder was an amorphous powder, the material thereof was an FeSiB soft magnetic alloy, and the material of the resin was an epoxy resin.

また、軟磁性金属粉末と樹脂との混成物2において、軟磁性金属粉末と樹脂との比率は、軟磁性金属粉末70重量%に対して、樹脂は30重量%とし、また、線輪部品の外形寸法は、外形3.0mm角、また高さは1.2mmとした。   In the composite 2 of the soft magnetic metal powder and the resin, the ratio of the soft magnetic metal powder to the resin is 30% by weight with respect to 70% by weight of the soft magnetic metal powder. The external dimensions were 3.0 mm square and 1.2 mm in height.

図8は、本発明の線輪部品と従来の線輪部品との直流重畳特性の比較図である。本発明の線輪部品は、初期のインダクタンスは、従来の線輪部品より上回っており、定格電流の範囲も数10%程度、延びている。これは、軟磁性金属粉末と樹脂との混成物2が、従来の線輪部品の空隙の作用も機能し、また、軟磁性金属粉末材料を透磁率の高いアモルファス材料として、これによって、安定した磁気回路を形成するためである。ここで、定格電流とは、直流重畳特性において、初期インダクタンス値が30%低下する時の電流値として定義される。   FIG. 8 is a comparison diagram of direct current superimposition characteristics between the wire ring component of the present invention and the conventional wire ring component. In the wire ring component of the present invention, the initial inductance exceeds that of the conventional wire ring component, and the range of the rated current also extends by several tens of percent. This is because the composite 2 of the soft magnetic metal powder and the resin also functions as a void of the conventional wire ring part, and the soft magnetic metal powder material is made an amorphous material having a high magnetic permeability, thereby being stabilized. This is for forming a magnetic circuit. Here, the rated current is defined as a current value when the initial inductance value is reduced by 30% in the DC superposition characteristics.

表2に、実施例ごとの直流重畳特性における初期インダクタンスと定格電流の値の比較を示し、実施例1と従来例の線輪部品のデータを示した。   Table 2 shows a comparison between the values of the initial inductance and the rated current in the DC superimposition characteristics for each example, and the data of the wheel ring parts of the example 1 and the conventional example are shown.

Figure 2006332245
Figure 2006332245

(実施例2)
図2は、本発明の実施例2の線輪部品の説明図である。図2(a)は上面図、図2(b)は、図2(a)でのAA断面図である。図2に示す線輪部品は、角型のドラム型磁性体コア1の鍔1bの間に巻線3が巻かれ、側面と一方の鍔の表面が、軟磁性金属粉末と樹脂との混成物2aにてモールドされている。ここで、ドラム型磁性体コア1は、その材質をNi−Znフェライト材料としている。また、軟磁性金属粉末と樹脂との混成物2aにおいて、軟磁性金属粉末はアモルファス粉末とし、その材質はFeSiB系軟磁性合金、また樹脂の材質はエポキシ樹脂を選択した。
(Example 2)
FIG. 2 is an explanatory diagram of a wire ring part according to the second embodiment of the present invention. FIG. 2A is a top view, and FIG. 2B is a cross-sectional view taken along line AA in FIG. In the wire ring component shown in FIG. 2, the winding 3 is wound between the flanges 1b of the rectangular drum-shaped magnetic core 1, and the side surface and the surface of one of the surfaces are a mixture of soft magnetic metal powder and resin. Molded in 2a. Here, the drum type magnetic core 1 is made of a Ni—Zn ferrite material. Further, in the composite 2a of the soft magnetic metal powder and the resin, the soft magnetic metal powder was an amorphous powder, the material thereof was an FeSiB soft magnetic alloy, and the material of the resin was an epoxy resin.

また、軟磁性金属粉末と樹脂との混成物2aにおいて、軟磁性金属粉末と樹脂との比率は、軟磁性金属粉末70重量%に対して、樹脂は30重量%とし、また、線輪部品の外形寸法は、外形3.0mm角、また高さは1.5mmとした。   In the composite 2a of the soft magnetic metal powder and the resin, the ratio of the soft magnetic metal powder and the resin is 30% by weight with respect to 70% by weight of the soft magnetic metal powder. The external dimensions are 3.0 mm square and 1.5 mm in height.

図8は、本発明の線輪部品と、従来の線輪部品との、直流重畳特性の比較図である。実施例1に示す線輪部品の場合と、同様の効果が得られている。   FIG. 8 is a comparison diagram of DC superimposition characteristics between the wire ring component of the present invention and a conventional wire ring component. The same effect as the case of the wire ring part shown in Example 1 is obtained.

表2には、実施例2の線輪部品の直流重畳特性における初期インダクタンスと定格電流の値を示した。   Table 2 shows the values of the initial inductance and the rated current in the DC superimposition characteristics of the wire ring part of Example 2.

(実施例3)
図3は、本発明の実施例3の線輪部品の説明図である。図3(a)は上面図、図3(b)は、図3(a)のAA断面図である。図3に示す線輪部品は、1つの角を斜めカットとした角型のドラム型磁性体コア11の鍔11bの間に巻線3が巻かれ、側面が、軟磁性金属粉末と樹脂との混成物21にてモールドされている。ここで、ドラム型磁性体コア11は、その材質をNi−Znフェライト材料としている。また、軟磁性金属粉末と樹脂との混成物21において、軟磁性金属粉末はアモルファス粉末とし、その材質はFeSiB系軟磁性合金、また樹脂の材質はエポキシ樹脂を選択した。
(Example 3)
FIG. 3 is an explanatory diagram of a wire ring part according to a third embodiment of the present invention. FIG. 3A is a top view, and FIG. 3B is a cross-sectional view taken along line AA in FIG. In the wire ring component shown in FIG. 3, the winding 3 is wound between the flanges 11b of the rectangular drum-shaped magnetic core 11 with one corner being obliquely cut, and the side surface is made of soft magnetic metal powder and resin. Molded with the hybrid 21. Here, the drum-type magnetic core 11 is made of a Ni—Zn ferrite material. Further, in the composite 21 of the soft magnetic metal powder and the resin, the soft magnetic metal powder was an amorphous powder, the material thereof was an FeSiB soft magnetic alloy, and the material of the resin was an epoxy resin.

また、軟磁性金属粉末と樹脂との混成物21において、軟磁性金属粉末と樹脂との比率は、軟磁性金属粉末70重量%に対して、樹脂は30重量%とし、また、線輪部品の外形寸法は、外形3.0mm角、また高さは1.2mmとした。   In the composite 21 of the soft magnetic metal powder and the resin, the ratio of the soft magnetic metal powder to the resin is 30% by weight with respect to 70% by weight of the soft magnetic metal powder. The external dimensions were 3.0 mm square and 1.2 mm in height.

図8は、本発明の線輪部品と、従来の線輪部品との、直流重畳特性の比較図である。本発明の線輪部品は、初期のインダクタンスは、従来の線輪部品より上回っており、定格電流の範囲も数10%程度、延びている。これは、軟磁性金属粉末と樹脂との混成物21が、従来の線輪部品での空隙の作用も、機能しており、また、安定した磁気回路を形成するためである。また、本実施例の線輪部品は、1つの角を斜めカットとした角型のドラム型磁性体コア11を用いているので、線輪部品の方向を特定できるという特徴がある。   FIG. 8 is a comparison diagram of DC superimposition characteristics between the wire ring component of the present invention and a conventional wire ring component. In the wire ring component of the present invention, the initial inductance exceeds that of the conventional wire ring component, and the range of the rated current also extends by several tens of percent. This is because the composite 21 of the soft magnetic metal powder and the resin also functions as a void in the conventional wire ring component, and forms a stable magnetic circuit. In addition, the wire ring component of the present embodiment has a feature that the direction of the wire ring component can be specified because the square drum type magnetic core 11 having one corner obliquely cut is used.

表2に、実施例3の直流重畳特性における初期インダクタンスと定格電流の値を示した。   Table 2 shows the values of the initial inductance and the rated current in the DC superposition characteristics of Example 3.

(実施例4)
図4は、本発明の実施例4の線輪部品の説明図である。図4(a)は上面図、図4(b)は、図4(a)のAA断面図である。図4に示す線輪部品は、1つの角を斜めカットとした角型のドラム型磁性体コア11aの鍔11bの間に巻線3が巻かれ、側面および一方の鍔の面が、軟磁性金属粉末と樹脂との混成物21aにてモールドされている。ここで、ドラム型磁性体コア11aは、その材質をNi−Znフェライト材料としている。また、軟磁性金属粉末と樹脂との混成物21aにおいて、軟磁性金属粉末はアモルファス粉末とし、その材質はFeSiB系軟磁性合金、また樹脂の材質はエポキシ樹脂を選択した。
Example 4
FIG. 4 is an explanatory diagram of a wire ring part according to a fourth embodiment of the present invention. 4A is a top view, and FIG. 4B is a cross-sectional view taken along line AA in FIG. In the wire ring component shown in FIG. 4, the winding 3 is wound between the flanges 11b of the rectangular drum-shaped magnetic core 11a with one corner being obliquely cut, and the side surface and the surface of one of the flanges are soft magnetic. Molded with a composite 21a of metal powder and resin. Here, the drum-type magnetic core 11a is made of a Ni—Zn ferrite material. Further, in the composite 21a of the soft magnetic metal powder and the resin, the soft magnetic metal powder was an amorphous powder, the material was FeSiB soft magnetic alloy, and the resin material was epoxy resin.

また、軟磁性金属粉末と樹脂との混成物21aにおいて、軟磁性金属粉末と樹脂との比率は、軟磁性金属粉末70重量%に対して、樹脂は30重量%とし、また、線輪部品の外形寸法は、外形3.0mm角、また高さは1.5mmとした。   In the composite 21a of the soft magnetic metal powder and the resin, the ratio of the soft magnetic metal powder and the resin is 30% by weight with respect to 70% by weight of the soft magnetic metal powder. The external dimensions are 3.0 mm square and 1.5 mm in height.

図8は、本発明の線輪部品と、従来の線輪部品との、直流重畳特性の比較図である。先の実施例3の線輪部品の場合と、同様の効果が得られている。また、本実施例の線輪部品は、1つの角を斜めカットとした角型のドラム型磁性体コア11を用いているので、線輪部品の方向を特定できるという特徴がある。   FIG. 8 is a comparison diagram of DC superimposition characteristics between the wire ring component of the present invention and a conventional wire ring component. The same effect as in the case of the wire ring part of Example 3 is obtained. In addition, the wire ring component of the present embodiment has a feature that the direction of the wire ring component can be specified because the square drum type magnetic core 11 having one corner obliquely cut is used.

表2に、実施例4の直流重畳特性における初期インダクタンスと定格電流の値を示した。   Table 2 shows the values of the initial inductance and the rated current in the DC superimposition characteristics of Example 4.

(実施例5)
図5は、本発明の実施例5の線輪部品の説明図である。図5(a)は上面図、図5(b)は、図5(a)のAA断面図である。図5に示す線輪部品は、ドラム型磁性体コア12の鍔12bの間に巻線3が巻かれ、ドラム型磁性体コア12の両方の鍔の面、および側面の全体が、軟磁性金属粉末と樹脂との混成物22にてモールドされている。ここで、ドラム型磁性体コア12は、その材質をNi−Znフェライト材料としている。また、軟磁性金属粉末と樹脂との混成物22において、軟磁性金属粉末はアモルファス粉末とし、その材質はFeSiB系軟磁性合金、また樹脂の材質はエポキシ樹脂を選択した。
(Example 5)
FIG. 5 is an explanatory diagram of a wire ring part according to a fifth embodiment of the present invention. FIG. 5A is a top view, and FIG. 5B is a cross-sectional view taken along line AA in FIG. In the wire ring component shown in FIG. 5, the winding 3 is wound between the flanges 12 b of the drum-type magnetic core 12, and the surfaces of both the flanges of the drum-type magnetic core 12 and the entire side surfaces are soft magnetic metal. Molded with a composite 22 of powder and resin. Here, the drum-type magnetic core 12 is made of a Ni—Zn ferrite material. Further, in the composite 22 of soft magnetic metal powder and resin, the soft magnetic metal powder was amorphous powder, the material was FeSiB-based soft magnetic alloy, and the resin material was epoxy resin.

また、軟磁性金属粉末と樹脂との混成物22において、軟磁性金属粉末と樹脂との比率は、軟磁性金属粉末70重量%に対して、樹脂は30重量%とし、また、線輪部品の外形寸法は、外形3.0mm角、また高さは1.8mmとした。   In the mixture 22 of soft magnetic metal powder and resin, the ratio of soft magnetic metal powder to resin is 30% by weight with respect to 70% by weight of soft magnetic metal powder. The external dimensions are 3.0 mm square and 1.8 mm in height.

図8は、本発明の線輪部品と従来の線輪部品との直流重畳特性の比較図である。本発明の線輪部品は、初期のインダクタンスは従来の線輪部品より上回っており、定格電流の範囲も数10%程度、延びている。これは、軟磁性金属粉末と樹脂との混成物22が、従来の線輪部品での空隙の作用も機能しており、また、安定した磁気回路を形成するためである。   FIG. 8 is a comparison diagram of direct current superimposition characteristics between the wire ring component of the present invention and the conventional wire ring component. In the wire ring component of the present invention, the initial inductance is higher than that of the conventional wire ring component, and the range of the rated current is extended by several tens of percent. This is because the mixture 22 of the soft magnetic metal powder and the resin also functions as a void in the conventional wire ring component and forms a stable magnetic circuit.

なお、表2に、実施例5の線輪部品の直流重畳特性における初期インダクタンスと定格電流の値を示した。   Table 2 shows the values of the initial inductance and the rated current in the DC superimposition characteristics of the wire ring part of Example 5.

(実施例6)
図6は、本発明の実施例6の線輪部品の説明図である。図6(a)は、上面図、図6(b)は、図6(a)のAA断面図である。図6に示す線輪部品は、ドラム型磁性体コア13の鍔13bの間に巻線3が巻かれ、ドラム型磁性体コアの側面が、軟磁性金属粉末と樹脂との混成物23にてモールドされている。前記ドラム型磁性体コア13の鍔13bは、その外径寸法を非対称としている。また、混成物23は、大きい方の鍔に合わせて、外径を規定している。
(Example 6)
FIG. 6 is an explanatory diagram of a wire ring part according to a sixth embodiment of the present invention. 6A is a top view, and FIG. 6B is a cross-sectional view taken along line AA in FIG. 6A. In the wire ring component shown in FIG. 6, the winding 3 is wound between the flanges 13 b of the drum type magnetic core 13, and the side surface of the drum type magnetic core is made of a mixture 23 of soft magnetic metal powder and resin. Molded. The flange 13b of the drum-type magnetic core 13 has an asymmetric outer diameter. Moreover, the hybrid 23 has prescribed | regulated the outer diameter according to the larger wrinkles.

ここで、ドラム型磁性体コア13は、その材質をNi−Znフェライト材料としている。また、軟磁性金属粉末と樹脂との混成物23において、軟磁性金属粉末はアモルファス粉末とし、その材質はFeSiB系軟磁性合金、また樹脂の材質はエポキシ樹脂を選択した。また、軟磁性金属粉末と樹脂との混成物23において、軟磁性金属粉末と樹脂との比率は、軟磁性金属粉末70重量%に対して樹脂は30重量%とし、また、線輪部品の外形寸法は、外形3.0mm角、また高さは1.2mmとした。   Here, the drum-type magnetic core 13 is made of a Ni—Zn ferrite material. Further, in the composite 23 of the soft magnetic metal powder and the resin, the soft magnetic metal powder was an amorphous powder, the material thereof was an FeSiB soft magnetic alloy, and the material of the resin was an epoxy resin. Further, in the mixture 23 of soft magnetic metal powder and resin, the ratio of soft magnetic metal powder and resin is 30% by weight of resin with respect to 70% by weight of soft magnetic metal powder, and the outer shape of the wire ring part. The dimensions are 3.0 mm square and the height is 1.2 mm.

ここで、本実施例の線輪部品では、大きい方の鍔の端部に端子部を形成する等の対応が可能となる。   Here, in the wire ring component of the present embodiment, it is possible to take measures such as forming a terminal portion at the end of the larger hook.

図8は、本発明の線輪部品と、従来の線輪部品との、直流重畳特性の比較図である。本発明の線輪部品は、初期のインダクタンスは、従来の線輪部品より上回っており、定格電流の範囲も数10%程度、延びている。これは、軟磁性金属粉末と樹脂との混成物23が、従来の線輪部品での空隙の作用も機能しており、また、安定した磁気回路を形成するためである。   FIG. 8 is a comparison diagram of DC superimposition characteristics between the wire ring component of the present invention and a conventional wire ring component. In the wire ring component of the present invention, the initial inductance exceeds that of the conventional wire ring component, and the range of the rated current also extends by several tens of percent. This is because the mixture 23 of the soft magnetic metal powder and the resin also functions as a void in the conventional wire ring component and forms a stable magnetic circuit.

ここで、表2に、実施例6の線輪部品の直流重畳特性における初期インダクタンスと定格電流の値を示した。   Here, Table 2 shows the values of the initial inductance and the rated current in the DC superimposition characteristic of the wire ring part of Example 6.

(実施例7)
図7は、本発明の実施例7の線輪部品の説明図である。図7(a)は、上面図、図7(b)は、図7(a)のAA断面図である。図7に示す線輪部品は、ドラム型磁性体コア14の鍔14bの間に巻線3が巻かれ、ドラム型磁性体コアの鍔内部が、軟磁性金属粉末と樹脂との混成物24にてモールドされている。ここで、ドラム型磁性体コア14は、その材質をNi−Znフェライト材料としている。また、軟磁性金属粉末と樹脂との混成物24において、軟磁性金属粉末はアモルファス粉末とし、その材質はFeSiB系軟磁性合金、また樹脂の材質はエポキシ樹脂を選択した。
(Example 7)
FIG. 7 is an explanatory diagram of a wire ring part according to a seventh embodiment of the present invention. FIG. 7A is a top view, and FIG. 7B is a cross-sectional view taken along line AA in FIG. 7A. In the wire ring component shown in FIG. 7, the winding 3 is wound between the flanges 14 b of the drum type magnetic core 14, and the inside of the drum type magnetic body core is formed into a composite 24 of soft magnetic metal powder and resin. Are molded. Here, the drum-type magnetic core 14 is made of a Ni—Zn ferrite material. Further, in the composite 24 of soft magnetic metal powder and resin, the soft magnetic metal powder was amorphous powder, the material was FeSiB-based soft magnetic alloy, and the resin material was epoxy resin.

また、軟磁性金属粉末と樹脂の混成物24において、軟磁性金属粉末と樹脂との比率は、軟磁性金属粉末70重量%に対して、樹脂は30重量%とし、また、線輪部品の外形寸法は、外径3.0mm、また高さは1.2mmとした。   In the composite 24 of soft magnetic metal powder and resin, the ratio of soft magnetic metal powder to resin is 30% by weight with respect to 70% by weight of soft magnetic metal powder. The dimensions were an outer diameter of 3.0 mm and a height of 1.2 mm.

図8は、本発明の線輪部品と、従来の線輪部品との、直流重畳特性の比較図である。本発明の線輪部品は、初期のインダクタンスは、従来の線輪部品より上回っており、定格電流の範囲も数10%程度、延びている。これは、軟磁性金属粉末と樹脂との混成物24が、従来の線輪部品での空隙の作用も、機能しており、また、安定した磁気回路を形成するためである。   FIG. 8 is a comparison diagram of DC superimposition characteristics between the wire ring component of the present invention and a conventional wire ring component. In the wire ring component of the present invention, the initial inductance exceeds that of the conventional wire ring component, and the range of the rated current also extends by several tens of percent. This is because the composite 24 of the soft magnetic metal powder and the resin also functions as an air gap in the conventional wire ring component and forms a stable magnetic circuit.

ここで、表2に、実施例7の線輪部品の直流重畳特性における初期インダクタンスと定格電流の値を示した。   Here, Table 2 shows the values of the initial inductance and the rated current in the DC superimposition characteristics of the wire ring part of Example 7.

表2に示すように、実施例1から実施例7までの線輪部品の、直流重畳特性における初期インダクタンスは、4.6μHから4.7μHの範囲にあり、また定格電流は、0.65Aから0.70Aの範囲にあって、従来例に比べれば大幅な特性値の改善が見られた。   As shown in Table 2, the initial inductance in the DC superimposition characteristics of the wire ring components from Example 1 to Example 7 is in the range of 4.6 μH to 4.7 μH, and the rated current is from 0.65 A. In the range of 0.70 A, a significant improvement in the characteristic value was seen compared to the conventional example.

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挙げたが、このチョークコイル線輪部品以外の線輪部品、例えばトランスなども、本発明の適用が可能である。本発明の線輪部品は、携帯端末などの電源部、あるいは、各種家電機器の電源部に利用できる。   In the description of the embodiments, 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 wire ring component, such as a transformer. The wire ring component of the present invention can be used for a power supply unit such as a portable terminal or a power supply unit of various home appliances.

本発明の実施例1の線輪部品の説明図。図1(a)は上面図、図1(b)は、図1(a)のAA断面図。Explanatory drawing of the wire ring components of Example 1 of this invention. FIG. 1A is a top view, and FIG. 1B is a cross-sectional view taken along line AA in FIG. 本発明の実施例2の線輪部品の説明図。図2(a)は上面図、図2(b)は、図2(a)でのAA断面図。Explanatory drawing of the wire ring components of Example 2 of this invention. 2A is a top view, and FIG. 2B is a cross-sectional view taken along line AA in FIG. 本発明の実施例3の線輪部品の説明図。図3(a)は上面図、図3(b)は、図3(a)のAA断面図。Explanatory drawing of the wire ring components of Example 3 of this invention. 3A is a top view, and FIG. 3B is a cross-sectional view taken along line AA in FIG. 本発明の実施例4の線輪部品の説明図。図4(a)は上面図、図4(b)は、図4(a)のAA断面図。Explanatory drawing of the wire ring components of Example 4 of this invention. 4A is a top view, and FIG. 4B is a cross-sectional view taken along the line AA in FIG. 本発明の実施例5の線輪部品の説明図。図5(a)は上面図、図5(b)は、図5(a)のAA断面図。Explanatory drawing of the wire ring components of Example 5 of this invention. FIG. 5A is a top view, and FIG. 5B is a cross-sectional view taken along the line AA in FIG. 本発明の実施例6の線輪部品の説明図。図6(a)は上面図、図6(b)は、図6(a)のAA断面図。Explanatory drawing of the wire ring components of Example 6 of this invention. 6A is a top view, and FIG. 6B is a cross-sectional view taken along line AA in FIG. 本発明の実施例7の線輪部品の説明図。図7(a)は上面図、図7(b)は、図7(a)のAA断面図。Explanatory drawing of the wire ring components of Example 7 of this invention. FIG. 7A is a top view, and FIG. 7B is a cross-sectional view taken along the line AA in FIG. 本発明の線輪部品と従来の線輪部品との直流重畳特性の比較図。The comparison figure of the direct current superimposition characteristic of the wire ring component of this invention and the conventional wire ring component. 従来の線輪部品の説明図。図9(a)は斜視図、図9(b)は、図9(a)のAA断面図。Explanatory drawing of the conventional wire ring components. 9A is a perspective view, and FIG. 9B is a cross-sectional view taken along line AA in FIG. 9A.

符号の説明Explanation of symbols

1,11,12,13,14,100 ドラム型磁性体コア
1a,11a,12a,13a,14a 中芯
1b,11b,12b,13b,14b 鍔
2,2a,21,21a,22,23,24 (軟磁性金属粉末と樹脂との)混成物
3 巻線
4 スリーブ型磁性体コア
5 ギャップ
1, 11, 12, 13, 14, 100 Drum type magnetic cores 1a, 11a, 12a, 13a, 14a Cores 1b, 11b, 12b, 13b, 14b 鍔 2, 2a, 21, 21, a, 22, 23, 24 Hybrid (soft magnetic metal powder and resin) 3 Winding 4 Sleeve type magnetic core 5 Gap

Claims (7)

ドラム型磁性体コアと、前記ドラム型磁性体コアの中芯に巻かれた巻線とで構成された開磁路線輪部品において、閉磁路化のため前記開磁路線輪部品の外形面の露出部が、軟磁性金属粉末と樹脂との混成物にてモールドされたことを特徴とする線輪部品。   In an open magnetic circuit line component composed of a drum-type magnetic core and a winding wound around the core of the drum-type magnetic core, the outer surface of the open magnetic circuit line component is exposed for a closed magnetic circuit. A wire ring component wherein the portion is molded with a composite of soft magnetic metal powder and resin. 前記開磁路線輪部品の前記外形面の、前記露出部の一部、または全部を、前記軟磁性金属粉末と、前記樹脂との混成物でモールドされたことを特徴とする請求項1に記載の線輪部品。   2. A part or all of the exposed portion of the outer surface of the open magnetic circuit line part is molded with a composite of the soft magnetic metal powder and the resin. Wire ring parts. 前記ドラム型磁性体コアの両端の鍔の外径の大きさが、同じであるか、または異なる ことを特徴とする請求項1に記載の線輪部品。   The wire ring component according to claim 1, wherein the outer diameters of the flanges at both ends of the drum type magnetic core are the same or different. 前記軟磁性金属粉末と前記樹脂とからなる混成物において、軟磁性金属粉末の配合比率を50重量%以上95重量%未満とし、前記配合比率によって透磁率が調整できることを特徴とする請求項1または2に記載の線輪部品。   The composite comprising the soft magnetic metal powder and the resin, wherein the blending ratio of the soft magnetic metal powder is 50 wt% or more and less than 95 wt%, and the magnetic permeability can be adjusted by the blending ratio. 2. A wire ring part according to 2. 前記軟磁性金属粉末は、CoNbZr系、FeZrCuB系、FeSiB系、FeCoZrCuB系、又はNiSiB系アモルファス合金粉末であり、そのうち少なくとも1つ以上を含むことを特徴とする請求項1、2または4に記載の線輪部品。   The soft magnetic metal powder is a CoNbZr-based, FeZrCuB-based, FeSiB-based, FeCoZrCuB-based, or NiSiB-based amorphous alloy powder, and includes at least one of them. Wire ring parts. 前記軟磁性金属粉末は、その平均粒径を3〜50μmとし、その粒度分布は、前記平均粒径に0.2を乗じた値以上から平均粒径2.0を乗じた値以下の範囲内の粒子の体積比率が、全体の50%以上であることを特徴とする請求項1,2,4または5に記載の線輪部品。   The soft magnetic metal powder has an average particle size of 3 to 50 μm, and its particle size distribution is within a range from a value obtained by multiplying the average particle size by 0.2 to a value obtained by multiplying the average particle size by 2.0. The wire ring component according to claim 1, 2, 4, or 5, wherein the volume ratio of the particles is 50% or more of the total. 前記樹脂は熱硬化性樹脂とし、エポキシ樹脂、フェノール樹脂、シリコーン樹脂、ポリウレタン樹脂、又はポリイミド樹脂のうち、少なくとも1つ以上を含むことを特徴とする請求項1,2または4に記載の線輪部品。   5. The wire ring according to claim 1, wherein the resin is a thermosetting resin and includes at least one of an epoxy resin, a phenol resin, a silicone resin, a polyurethane resin, and a polyimide resin. parts.
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JP2009004670A (en) * 2007-06-25 2009-01-08 Nec Tokin Corp Drum-type inductor and its manufacturing method
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WO2008136383A1 (en) * 2007-04-26 2008-11-13 Toho Zinc Co., Ltd. Winding inductor and process for manufacturing the same
JP2008277374A (en) * 2007-04-26 2008-11-13 Toho Zinc Co Ltd Wire wound inductor and manufacturing method thereof
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JP2011254018A (en) * 2010-06-03 2011-12-15 Nec Tokin Corp Magnetic element
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JP5514375B1 (en) * 2013-07-19 2014-06-04 株式会社Leap Coil component and method for manufacturing coil component
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