JP3368871B2 - Inductor component and manufacturing method thereof - Google Patents
Inductor component and manufacturing method thereofInfo
- Publication number
- JP3368871B2 JP3368871B2 JP20862699A JP20862699A JP3368871B2 JP 3368871 B2 JP3368871 B2 JP 3368871B2 JP 20862699 A JP20862699 A JP 20862699A JP 20862699 A JP20862699 A JP 20862699A JP 3368871 B2 JP3368871 B2 JP 3368871B2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- magnetic
- magnetic core
- leg
- winding element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Coils Of Transformers For General Uses (AREA)
- Insulating Of Coils (AREA)
- Coils Or Transformers For Communication (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は民生用あるいは産業
用電子機器に使用されるスイッチング電源用のインダク
タ部品およびその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inductor component for a switching power supply used in consumer or industrial electronic equipment and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】近年、各種携帯電子機器の発展により、
小形薄形化、高性能化、低消費電力化等の市場要求が高
まり、これらのセット開発ニーズに応えるため、電源部
においても面実装を主体とした高密度実装化対応と低損
失化が課題となっている。そしてさらに構成部品の小形
化を図るためスイッチング電源においては、スイッチン
グ周波数をより高周波数で駆動することが多くなってき
ている。特にスイッチング電源の主要構成部品であるイ
ンダクタ部品においては、高周波駆動に適した低損失で
かつ安価な面実装タイプの薄形チョークコイルやトラン
スが求められている。スイッチング周波数を高周波数で
駆動するとコイルの巻数が低減できるため、コイルを巻
線しないで形成する安価な面実装タイプとして薄板状の
コイルを折り曲げて形成する非巻線タイプのチョークコ
イルやトランスが多く提案されている。2. Description of the Related Art In recent years, with the development of various portable electronic devices,
Market demands for smaller and thinner products, higher performance, lower power consumption, etc. are increasing, and in order to meet these set development needs, high-density mounting mainly for surface mounting and low loss are also issues in the power supply section. Has become. Further, in order to further miniaturize the components, in the switching power supply, the switching frequency is often driven at a higher frequency. Particularly for inductor components, which are the main components of switching power supplies, there is a demand for low-loss, low-cost surface-mount type thin choke coils and transformers suitable for high-frequency driving. Since driving the switching frequency at a high frequency can reduce the number of coil turns, many non-winding type choke coils and transformers are formed by bending a thin plate-shaped coil as an inexpensive surface mount type that is formed without winding the coil. Proposed.
【０００３】薄板状のコイルを折り曲げて形成してなる
従来の薄形チョークコイルおよびトランスとしては特開
昭６１−１８４８０６号公報、特開平４−１９６５０７
号公報、特開平５−２１７７７０号公報に示すもの等が
ある。Conventional thin choke coils and transformers formed by bending a thin plate coil are disclosed in Japanese Patent Laid-Open Nos. 61-184806 and 4-196507.
JP-A-5-217770 and the like.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
構成は磁脚を挿入する開口部を中央に１個有する巻線素
子を複数個連続して形成したものをロ字状にジグザグ状
に折り重ねて形成しているのでコイルの積層数がコイル
の巻数より多くなり、薄形化に最適な構造とはなってい
ない。また、折り曲げコイルの厚み方向には無駄な隙間
が生じるため、導体の占積率が低下する、つまり、導体
の断面積が小さくなり抵抗値が高くなる。このため、コ
イルに大電流を流したときの損失や発熱が大きくなると
いう課題を有しているものであった。However, in the conventional structure, a plurality of continuous winding elements having one opening in the center for inserting the magnetic leg are continuously formed and folded in a zigzag shape in a square shape. Since it is formed as described above, the number of layers of the coil is larger than the number of turns of the coil, and the structure is not optimal for thinning. Further, since a useless gap is generated in the thickness direction of the bending coil, the space factor of the conductor is reduced, that is, the cross-sectional area of the conductor is reduced and the resistance value is increased. Therefore, there is a problem that loss and heat generation when a large current is applied to the coil are increased.
【０００５】本発明は上記課題を解決し、スイッチング
電源の高周波駆動に適した低損失、低発熱のインダクタ
部品およびその製造方法を提供することを目的とする。An object of the present invention is to solve the above problems and provide a low loss, low heat generation inductor component suitable for high frequency driving of a switching power supply and a method for manufacturing the same.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に本発明は、金属板を加工して磁心の２個以上の磁脚を
挿入する２個以上の開口部をもった１ターン分の巻線素
子を複数個連続して形成したものを折曲して巻線とし、
この巻線に開口部数に対応した磁脚を有する磁心を組み
込み、巻線として少なくとも巻始めおよび巻終わりとな
る巻線素子に引出端子を一体に設けるとともに、巻線素
子から引き出される引出端子を巻線素子の厚みより薄く
形成した構成としたものである。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention processes one metal plate and inserts two or more magnetic legs of a magnetic core into one turn having two or more openings. Wound by bending a plurality of winding elements formed continuously,
Set the magnetic core having a magnetic legs corresponding to the opening parts to this winding
At the beginning and end of the winding.
The winding element is integrated with the winding element
Make the lead-out terminal pulled out from the child thinner than the thickness of the winding element.
It has a formed structure.
【０００７】上記構成によって、１ターンあたり１層と
なるように折り曲げコイルが形成されるため、折り曲げ
コイル間に無駄な隙間がなくなり、導体の占積率を究極
まで高めることができ、導体の断面積を大きくすること
が可能となることによって抵抗値を究極まで下げること
が可能となり、大電流を流しても低損失、低発熱となる
薄形のインダクタ部品を提供できるものである。With the above structure, since the bending coil is formed so that there is one layer per turn, there is no useless gap between the bending coils, the space factor of the conductor can be increased to the ultimate, and the disconnection of the conductor can be prevented. By making it possible to increase the area, it is possible to reduce the resistance value to the ultimate, and it is possible to provide a thin inductor component that has low loss and low heat generation even when a large current is passed.
【０００８】特に、巻線素子から引き出される引出端子
を巻線素子の厚みより薄く形成したものであり、折り曲
げ回数が異なり、板厚の異なるコイルであっても引出端
子の折り曲げ工程、治具等を共用できるので生産効率が
向上し、また、樹脂でフルモールドするときも引出端子
の厚みが同じため、金型が共用できるので設備費用も削
減できる。 In particular, a lead-out terminal drawn out from the winding element
Is thinner than the thickness of the winding element,
Even if the coil has different stripping times and different plate thickness,
Since the child bending process and jigs can be shared, production efficiency is improved.
Improves and also leads terminals when fully molded with resin
Since the thickness of the mold is the same, the mold can be shared, which reduces equipment costs.
Can be reduced.
【０００９】[0009]
【発明の実施の形態】本発明の請求項１に記載の発明
は、金属板を加工して磁心の２個以上の磁脚を挿入する
２個以上の開口部をもった１ターン分の巻線素子を複数
個連続して形成したものを折曲して巻線とし、この巻線
に開口部数に対応した磁脚を有する磁心を組み込み、巻
線として少なくとも巻始めおよび巻終わりとなる巻線素
子に引出端子を一体に設けるとともに、巻線素子から引
き出される引出端子を巻線素子の厚みより薄く形成した
構成としたものである。 BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a winding for one turn having two or more openings for processing a metal plate and inserting two or more magnetic legs of a magnetic core. A winding is formed by bending a plurality of continuous wire elements, and a magnetic core having a magnetic leg corresponding to the number of openings is built into this winding.
A winding element that has at least the beginning and end of winding as a wire
The lead-out terminal is integrated with the child, and
The lead-out terminal that is exposed is made thinner than the thickness of the winding element.
It is configured.
【００１０】上記構成により、１ターンあたり１層とな
るように折り曲げコイルが形成されるため、折り曲げコ
イル間に無駄な隙間がなくなり、導体の占積率を究極ま
で高めることができ、導体の断面積を大きくすることが
可能となることによって抵抗値を究極まで下げることが
可能となり、大電流を流しても低損失、低発熱とするこ
とができるものである。 With the above structure, since the bending coil is formed so that one layer is formed per turn , there is no useless gap between the bending coils, the space factor of the conductor can be increased to the ultimate, and the disconnection of the conductor can be prevented. By making it possible to increase the area, the resistance value can be lowered to the ultimate, and even if a large current is passed, low loss and low heat generation can be achieved.
【００１１】特に、巻線素子から引き出される引出端子
を巻線素子の厚みより薄く形成したものであり、折り曲
げ回数が異なり、板厚の異なるコイルであっても引出端
子の折り曲げ工程、治具等を共用できるので生産効率が
向上し、また、樹脂でフルモールドするときも引出端子
の厚みが同じため、金型が共用できるので設備費用も削
減できる。 In particular, a lead terminal drawn from the winding element
Is thinner than the thickness of the winding element,
Even if the coil has different stripping times and different plate thickness,
Since the child bending process and jigs can be shared, production efficiency is improved.
Improves and also leads terminals when fully molded with resin
Since the thickness of the mold is the same, the mold can be shared, which reduces equipment costs.
Can be reduced.
【００１２】本発明の請求項２に記載の発明は、金属板
から２個以上の開口部を持った１ターン分の巻線素子を
複数個連続するように形成した表面に絶縁皮膜を形成し
た各巻線素子の連結部を折り曲げて所定のターン数の巻
線を構成し、この巻線の上下から成型用磁性シートを組
み込み、巻線として少なくとも巻始めおよび巻終わりと
なる巻線素子に引出端子を一体に設けるとともに、巻線
素子から引き出される引出端子を巻線素子の厚みより薄
く形成した構成としたものである。 According to a second aspect of the present invention, an insulating film is formed on a surface of a metal plate, which is formed by continuously forming a plurality of winding elements for one turn having two or more openings. bending the connecting portions of each winding element constitutes a predetermined number of turns of the winding, the set of molding magnetic sheet from the top and bottom of the winding
As a winding, at least the beginning and end of the winding
The winding terminal is integrated with the winding element
Make the lead-out terminal drawn out from the element thinner than the thickness of the winding element.
It has a well-formed structure.
【００１３】上記構成により、成型用磁性シートは加熱
加圧成型する際、ペースト状になり軟化するため巻線の
開口部等の隙間に入り込むため、磁心としてはフェライ
トやダストコアのように予め開口部形状に対応した磁脚
形状にしなくてもよいので磁心形状をシンプルにでき、
磁心金型の製作費用が節減でき、また、巻線の開口部に
磁性シートが軟化して入り込むため、巻線と磁脚間の隙
間はほとんどなくなり、このため、実質的に開口部には
まりこむ磁脚の断面積は大きく取れることになり、磁気
性能を最大限に伸ばすことが可能となる。 With the above construction, when the magnetic sheet for molding is heated and pressed, it becomes a paste and softens and enters the gaps such as the openings of the windings. Therefore, the magnetic cores such as ferrite and dust cores are preliminarily opened. Since it does not have to be a magnetic leg shape corresponding to the shape, the magnetic core shape can be simplified,
The manufacturing cost of the magnetic core die can be reduced, and since the magnetic sheet softens and enters the opening of the winding, there is almost no gap between the winding and the magnetic leg, so that it practically fits in the opening. The magnetic leg has a large cross-sectional area, and it is possible to maximize the magnetic performance.
【００１４】本発明の請求項３に記載の発明は、請求項
１の構成に加えて磁心の磁脚を三角柱または台形柱とし
たものにおいて、磁脚の長辺が近接し並行となる構成と
したものであり、対向する磁脚の短辺側がそれぞれ外側
に向かって配置されるため、４隅のコーナー部を利用し
て補助磁脚を設ける構造がとれることとなり、性能向上
が可能となる。 The invention according to claim 3 of the present invention is a claim
In addition to the configuration of 1 , the magnetic leg of the magnetic core is a triangular prism or a trapezoidal prism.
And the long side of the magnetic leg is close and parallel.
The shorter sides of the opposing magnetic legs are outside.
Since it will be placed toward, use the four corners
The structure that the auxiliary magnetic leg is installed is adopted, and the performance is improved.
Is possible.
【００１５】本発明の請求項４に記載の発明は、請求項
１の構成に加えて磁心として巻線の開口にはまり合う磁
心と共通磁脚からなるものと平板状のものとを用い、磁
心の磁脚を三角柱または台形柱のいずれかとするととも
に、磁脚の長辺を近接し並行にしたものであり、対向す
る磁脚の短辺側がそれぞれ外側に向かって配置されるた
め、４隅のコーナー部を利用して補助磁脚を設ける構造
がとれることとなり、性能向上が可能となる。 The invention according to claim 4 of the present invention is
In addition to the structure of 1 , the magnetic core that fits in the opening of the winding as the magnetic core
Using a core and a common magnetic leg and a flat one,
If the magnetic legs of the heart are either triangular prisms or trapezoidal prisms,
, The long sides of the magnetic legs are close and parallel to each other .
The short sides of the magnetic legs are arranged outward.
Therefore, the auxiliary magnetic legs are provided by using the four corners.
Therefore, the performance can be improved.
【００１６】本発明の請求項５に記載の発明は、請求項
３または請求項４の構成に加えて磁心の磁脚を三角柱ま
たは台形柱としたものにおいて、方形状の共通磁脚の一
つの対角線に対して磁脚の長辺が並行で他の対角線に対
して磁脚の中心が一つの対角線方向にずれた構成とした
ものであり、方形状の共通磁脚の対角線の部分が磁脚 を
連結する共通磁脚の幅として有効利用できるので共通磁
脚の連結部の断面積がアップすることによりインダクタ
ンスがアップする、つまり、磁気特性を向上させること
ができる。 The invention according to claim 5 of the present invention is
In addition to the structure of claim 3 or claim 4 , the magnetic leg of the magnetic core is formed into a triangular prism.
Or a trapezoidal pillar, one of the square-shaped common magnetic legs
The long side of the magnetic leg is parallel to one diagonal and is diagonal to the other diagonal.
And the center of the magnetic leg is shifted in one diagonal direction.
The diagonal part of the square-shaped common magnetic leg is the magnetic leg .
Since it can be effectively used as the width of the common magnetic leg to be connected, the common magnetic
Inductor due to the increased cross-sectional area of the leg connection
To improve the magnetic properties.
You can
【００１７】本発明の請求項６に記載の発明は、金属板
から磁心の２個以上の磁脚を挿入する２個以上の開口部
を持った１ターン分の巻線素子を複数個連続するように
形成し、この巻線素子の表面に絶縁皮膜を形成した後、
各巻線素子の連結部を折り曲げて所定のターン数の巻線
を構成し、この巻線に巻線の開口部に合う磁脚を有する
磁心を組み込み、かつ、金属板から巻線素子群を形成す
る時に各巻線素子すべてに引出端子を一体に形成し、巻
線のターン数が決定してから不必要な巻線素子の引出端
子を切断する製造方法としたものであり、巻線機を使用
しないで品質の安定した薄形コイルを形成できるため、
コイル製造工程のスピードアップが図れ、設備費の低減
とともに製造コストの低減が達成できるものである。 The invention according to claim 6 of the present invention is a metal plate.
Two or more openings for inserting two or more magnetic legs of the magnetic core from
So that multiple winding elements for one turn with
After forming and forming an insulating film on the surface of this winding element,
Winding with a predetermined number of turns by bending the connecting part of each winding element
This winding has a magnetic leg that fits the opening of the winding.
Incorporates a magnetic core and forms a winding element group from a metal plate
At this time, the lead-out terminals are
Unnecessary winding element lead-out end after the number of turns of the wire is determined
It is a manufacturing method that cuts off the child and uses a winding machine.
Since a thin coil of stable quality can be formed without
Reduces equipment costs by speeding up the coil manufacturing process
At the same time, a reduction in manufacturing cost can be achieved.
【００１８】本発明の請求項７に記載の発明は、金属板
から２個以上の開口部を持った１ターン分の巻線素子を
複数個連続するように形成し、この巻線素子の表面に絶
縁皮膜を形成した後、各巻線素子の連結部を折り曲げて
所定のターン数の巻線を構成し、この巻線の上下から成
型用磁性シートを加熱加圧成型で組み込み、金属板から
巻線素子群を形成する時に各巻線素子すべてに引出端子
を一体に形成し、巻線のターン数が決定してから不必要
な巻線素子の引出端子を切断する製造方法としたもので
あり、磁心を組み込む際の接着工程が不要となるので設
備や製造コストの低減が達成できるものである。 The invention according to claim 7 of the present invention is a metal plate.
A winding element for one turn with two or more openings
Form a plurality of continuous wires and keep them on the surface of this winding element.
After forming the edge film, bend the connecting part of each winding element.
Configure a winding with a specified number of turns, and
The magnetic sheet for the mold is assembled by heat and pressure molding, and from the metal plate
Pull-out terminals for all winding elements when forming a winding element group
Unnecessary after the number of turns of the winding has been determined
With a manufacturing method that cuts the lead terminal of a winding element
Yes, there is no need for a bonding process when assembling the magnetic core.
The equipment and manufacturing cost can be reduced.
【００１９】以下、本発明の実施の形態について図面を
用いて具体的に説明する。Embodiments of the present invention will be specifically described below with reference to the drawings.
【００２０】（実施の形態１）
本発明の第１の実施の形態について図１〜図９を用いて
説明する。(Embodiment 1) A first embodiment of the present invention will be described with reference to FIGS.
【００２１】図１は本発明のインダクタ部品の第１の実
施の形態を示す組立構成図、図２は本発明の第１の実施
の形態の連続形成した巻線素子の平面図、図３は本発明
の第１の実施の形態の引出端子打抜き後の巻線の平面
図、図４（ａ）は本発明の第１の実施の形態の折り曲げ
コイルの上面図、図４（ｂ）は同正面図、図４（ｃ）は
同側面図、図５は本発明の第１の実施の形態の巻線素子
の断面図、図６（ａ）は本発明の第１の実施の形態の磁
心の上面図、図６（ｂ）は同正面図、図６（ｃ）は同側
面図、図７（ａ）は本発明の第１の実施の形態の平板状
磁心の上面図、図７（ｂ）は同正面図、図７（ｃ）は同
側面図、図８（ａ）は組み合わせた磁心の上面図、図８
（ｂ）は同正面図、図８（ｃ）は同側面図である。図９
（ａ）は本発明のインダクタ部品の第１の実施の形態を
示す完成品の上面図、図９（ｂ）は同正面図であり、図
１〜図９において１は磁心、１ａは磁脚、１ｂは共通磁
脚、１ｃは平板状磁心、２は巻線、２ａは巻線素子、２
ｂは連結部、３は開口部、４は引出端子、４ａは不要な
引出端子、５はスリット、６は切断部、７は絶縁皮膜、
８は絶縁樹脂を示している。FIG. 1 is an assembly configuration diagram showing a first embodiment of an inductor component of the present invention, FIG. 2 is a plan view of a continuously formed winding element of the first embodiment of the present invention, and FIG. FIG. 4A is a plan view of the winding after punching out the lead terminal of the first embodiment of the present invention, FIG. 4A is a top view of the bending coil of the first embodiment of the present invention, and FIG. 4C is a front view, FIG. 4C is a side view of the same, FIG. 5 is a cross-sectional view of the winding element according to the first embodiment of the present invention, and FIG. 6A is a magnetic core according to the first embodiment of the present invention. 6B is a front view thereof, FIG. 6C is a side view thereof, and FIG. 7A is a top view of the flat magnetic core according to the first embodiment of the present invention. 8B is the same front view, FIG. 7C is the same side view, FIG. 8A is the top view of the combined magnetic core, and FIG.
8B is a front view of the same, and FIG. 8C is a side view of the same. Figure 9
(A) is a top view of a finished product showing a first embodiment of an inductor component of the present invention, FIG. 9 (b) is a front view of the same, and in FIGS. 1 to 9, 1 is a magnetic core, 1a is a magnetic leg. 1b is a common magnetic leg, 1c is a flat magnetic core, 2 is a winding, 2a is a winding element, 2
b is a connecting portion, 3 is an opening, 4 is a lead terminal, 4a is an unnecessary lead terminal, 5 is a slit, 6 is a cut portion, 7 is an insulating film,
Reference numeral 8 indicates an insulating resin.
【００２２】まず図２のように両端に２個の切断部６と
連結部２ｂを設けて２個以上の開口部３を有する１ター
ン分の巻線素子２ａとなるように形状工夫したものを複
数個連続して形成した金属板からなる連続巻線素子を金
型で打ち抜いたり、またはエッチングなどの方法で製作
する。次に巻線のターン数（本実施の形態１では３ター
ン）が決定した後、外形をほぼ方形にした各々の巻線素
子２ａの四隅の全てに形成した引出端子４のうち、不要
な引出端子４ａを切断削除して図３のように巻始めと巻
終わりとなる巻線素子２ａにのみ引出端子４を残してや
る。次にこの各々の巻線素子２ａの連結部２ｂに沿って
折り曲げプレス加工してやることによって図４に示すよ
うな折り曲げコイルを巻線２として完成してやる。この
ようにして構成された巻線２に開口部数に対応した磁脚
１ａを有する磁心１を組み込んでインダクタ部品を図１
のごとく完成させるものである。First, as shown in FIG. 2, a shape is devised so that a winding element 2a for one turn having two cutting portions 6 and a connecting portion 2b at both ends and having two or more openings 3 is formed. A continuous winding element made of a plurality of continuously formed metal plates is punched with a die or manufactured by a method such as etching. Next, after the number of turns of the winding (three turns in the first embodiment) is determined, unnecessary lead-out terminals of the lead-out terminals 4 formed at all four corners of each winding element 2a having a substantially rectangular outer shape are drawn out. The terminal 4a is cut and deleted, and the lead terminal 4 is left only in the winding element 2a at the beginning and end of winding as shown in FIG. Next, a bending coil as shown in FIG. 4 is completed as the winding 2 by bending and pressing along the connecting portion 2b of each winding element 2a. An inductor component is constructed by incorporating the magnetic core 1 having the magnetic legs 1a corresponding to the number of openings in the winding wire 2 thus configured.
It will be completed just like.
【００２３】以上の構成によれば、１ターンあたり１層
となるように折り曲げコイルが形成されるため、折り曲
げコイル間に無駄な隙間がなくなり、導体の占積率を究
極まで高めることができる。つまり、導体の断面積を大
きくすることが可能となる。このことによって抵抗値を
究極まで下げることが可能となり、大電流を流しても低
損失、低発熱とすることができるものである。According to the above construction, since the bending coil is formed so as to have one layer per turn, there is no useless gap between the bending coils, and the space factor of the conductor can be increased to the ultimate. That is, it is possible to increase the cross-sectional area of the conductor. As a result, the resistance value can be lowered to the ultimate, and low loss and low heat generation can be achieved even when a large current is passed.
【００２４】また、巻始めおよび巻終わりとなる巻線素
子２ａに引出端子４を一体に設けたことにより、外部へ
の引出端子４として共用できるので部品点数が少なくな
る。また、巻線素子２ａと引出端子４の接続も不要とな
り、生産工程が簡素化できるため設備費用が低減でき生
産性も向上する。さらに接続点が減るため信頼性も向上
すること及び接続部のスペースも不要となり小形化がで
きる。Further, by providing the lead-out terminal 4 integrally with the winding element 2a at the beginning and end of winding, the lead-out terminal 4 can be shared as the lead-out terminal 4 to the outside, and the number of parts is reduced. Further, the connection between the winding element 2a and the lead-out terminal 4 is not required and the production process can be simplified, so that the facility cost can be reduced and the productivity can be improved. Further, since the number of connection points is reduced, the reliability is improved and the space for the connection portion is not required, and the size can be reduced.
【００２５】また、巻線素子２ａの外形をほぼ方形とし
て引出端子４を方形の四隅から引き出したことにより、
コイルの傾きがなくなる。また基板に実装するときの水
平方向の傾きがなくなり、半田実装性が向上する。Since the winding element 2a has a substantially rectangular outer shape and the lead-out terminals 4 are drawn out from the four corners of the square,
The coil does not tilt. Further, the inclination in the horizontal direction when mounting on the board is eliminated, and the solder mountability is improved.
【００２６】また、巻線素子２ａに２つの切断部６を設
けることによって電流の流れる方向は図３の矢印に示す
ように一定方向となり、これにより電流を一定方向に流
せるコイルを容易に実現できる。Further, by providing the two cutting portions 6 in the winding element 2a, the direction in which the current flows becomes a constant direction as shown by the arrow in FIG. 3, so that a coil that allows a current to flow in a constant direction can be easily realized. .
【００２７】また、各巻線素子２ａの表面には図５に示
すように電着塗装などの方法で絶縁皮膜７を形成してや
り、巻線素子２ａ間および巻線２と磁心１間の絶縁が保
てるようにしている。この構成により、絶縁皮膜付きの
平板状導体を使わなくて裸の平板導体が使用できるため
素材の原価が低減できる。また、後工程で絶縁を施すた
め絶縁が安定し信頼性が向上する。さらにコイル部の絶
縁が安定しているため、磁心１を組み込む際、磁心１側
の絶縁が不要とできるので表面抵抗の低い磁性材料をそ
のまま組み込むことが可能となり、磁心１に絶縁処理す
るかまたはコイル部をさらに追加絶縁処理するという余
分な絶縁処理工程を削除できる。Further, as shown in FIG. 5, an insulating film 7 is formed on the surface of each winding element 2a by a method such as electrodeposition coating to maintain insulation between the winding elements 2a and between the winding 2 and the magnetic core 1. I am trying. With this configuration, since a bare flat conductor can be used without using a flat conductor with an insulating film, the cost of the material can be reduced. Also, since insulation is applied in a later step, insulation is stable and reliability is improved. Further, since the insulation of the coil portion is stable, when the magnetic core 1 is assembled, it is not necessary to insulate the magnetic core 1 side, so that a magnetic material having a low surface resistance can be incorporated as it is. It is possible to eliminate an extra insulation treatment step of performing additional insulation treatment on the coil portion.
【００２８】また、図２、図３に示すように巻線素子２
ａの連結部２ｂは幅広に形成すると共にスリット５をい
れている。このことによって連結部２ｂの幅広部分の断
面積に余裕ができるため、この幅広部分で抵抗値のトリ
ミング調整を行っても局部発熱をなしとすることができ
る。さらに連結部２ｂにスリット５を設けたので折り曲
げ加工が容易になることに加えて連結部２ｂの断面積を
可変できるため、直流抵抗値の微調整もできるものであ
る。Further, as shown in FIG. 2 and FIG.
The connecting portion 2b of "a" is formed wide and has a slit 5 formed therein. As a result, there is a margin in the cross-sectional area of the wide portion of the connecting portion 2b, so that local heat generation can be eliminated even if the resistance value is trimmed and adjusted in this wide portion. Further, since the slit 5 is provided in the connecting portion 2b, the bending process is facilitated, and since the cross-sectional area of the connecting portion 2b can be changed, the DC resistance value can be finely adjusted.
【００２９】以上の構成とするためには製造方法として
金属板から磁心１の２個以上の磁脚１ａを挿入する２個
以上の開口部３を持った１ターン分の巻線素子２ａを複
数個連続するように形成し、この巻線素子２ａの表面に
絶縁皮膜７を形成した後、各巻線素子２ａの連結部２ｂ
を折り曲げて所定のターン数の巻線２を構成し、この巻
線２に巻線の開口部３に合う磁脚１ａを有する磁心１を
組み込む製造方法としたものであり、巻線機を使用しな
いで品質の安定した薄形コイルを形成できるため、コイ
ル製造工程のスピードアップが図れ、設備費の低減とと
もに製造コストの低減が達成できるものである。In order to have the above structure, as a manufacturing method, a plurality of one-turn winding elements 2a having two or more openings 3 for inserting two or more magnetic legs 1a of the magnetic core 1 from a metal plate. The winding elements 2a are formed so as to be continuous, and the insulating film 7 is formed on the surface of the winding elements 2a.
Is used to form a winding 2 having a predetermined number of turns, and a magnetic core 1 having a magnetic leg 1a that fits the opening 3 of the winding is incorporated into the winding 2, and a winding machine is used. Since a thin coil having stable quality can be formed without doing so, the coil manufacturing process can be speeded up, and the manufacturing cost and the manufacturing cost can be reduced.
【００３０】また、上記製造方法に加えて金属板から巻
線素子２ａ群を形成する時に各巻線素子２ａすべてに引
出端子４を一体に形成し、巻線２のターン数が決定して
から巻線素子２ａの不必要な引出端子４ａを切断する製
造方法としたものであり、平板状導体の形状が一定とで
きる。このことにより、引出端子付きの平板状導体を連
続フープで生産しても巻数が可変になった場合の対応も
可能となり、生産性が向上するとともに設備費も低減で
きる。In addition to the above manufacturing method, when forming the winding element 2a group from the metal plate, the lead-out terminals 4 are integrally formed on all the winding elements 2a, and after the number of turns of the winding 2 is determined, the winding is performed. This is a manufacturing method in which unnecessary lead terminals 4a of the wire element 2a are cut, and the shape of the flat conductor can be made constant. This makes it possible to deal with the case where the number of turns is variable even if a flat conductor with a lead-out terminal is produced by a continuous hoop, which improves productivity and reduces equipment costs.
【００３１】さらに金属板から連続した巻線素子２ａを
打ち抜いた後、折り曲げプレス加工する製造方法とした
ものであり、折り曲げの寸法精度が向上し、自動化も容
易となるものである。Further, the continuous winding element 2a is punched out from the metal plate, and is then subjected to bending press working, which improves the dimensional accuracy of bending and facilitates automation.
【００３２】また、本発明の実施の形態を示す図１の場
合は巻線２の開口部３の形状を長方形、方形としてその
開口部３にはまりあうように長方形柱、方形柱とした磁
脚１ａと共通磁脚からなるものと平板状のものを組み合
わせて使用しているが、巻線素子２ａの開口部３が図２
〜図４のように長円形にした場合は図６に示すような長
円柱の磁脚１ａを有する磁心１を組み込んでやればよ
い。このように巻線２の開口部３の形状を方形、長方
形、長円形と各種の形状を用いることによって巻線占積
率の向上、直流抵抗値の低減等、構造設計の自由度を広
げることができる。さらに磁心１の磁脚１ａを長方形、
方形、長円形などにしてやれば最適な巻線素子２ａの開
口の形状と合わせることが可能となり、インダクタ部品
としての構造・性能が最適化できるという効果も得られ
るものである。In the case of FIG. 1 showing the embodiment of the present invention, the magnetic leg is a rectangular column or a rectangular column so that the shape of the opening 3 of the winding 2 is rectangular or square so as to fit in the opening 3. 1a and a common magnetic leg and a flat plate are used in combination, the opening 3 of the winding element 2a is shown in FIG.
When the ellipse is formed as shown in FIG. 4, the magnetic core 1 having the oblong magnetic legs 1a as shown in FIG. 6 may be incorporated. By using various shapes such as a square, a rectangle, and an oval for the shape of the opening 3 of the winding 2, the degree of freedom in structural design such as improvement of winding space factor and reduction of DC resistance value can be increased. You can Further, the magnetic leg 1a of the magnetic core 1 is rectangular,
If it is formed in a rectangular shape or an oval shape, it is possible to match it with the optimum shape of the opening of the winding element 2a, and it is possible to obtain the effect that the structure and performance as an inductor component can be optimized.
【００３３】なお、ここで巻線２の開口部３の形状が多
角形、三角形または台形となった場合は磁心１の磁脚１
ａをそれぞれ多角柱、三角柱、台形柱としたものを使用
すれば、同様の効果が得られることはいうまでもない。When the shape of the opening 3 of the winding 2 is polygonal, triangular or trapezoidal, the magnetic leg 1 of the magnetic core 1 is used.
Needless to say, similar effects can be obtained by using polygonal prisms, triangular prisms, and trapezoidal prisms.
【００３４】また、図６に示すような巻線２の開口部３
にはまりあう磁脚１ａと共通磁脚１ｂを有するものを磁
心を２個用いて構成すれば、磁心１の金型の共用化がで
きる。Further, the opening 3 of the winding 2 as shown in FIG.
If two magnetic cores having a magnetic leg 1a and a common magnetic leg 1b that fit in each other are used, the mold of the magnetic core 1 can be shared.
【００３５】また、図６に示すように巻線２の開口には
まりあう磁脚１ａと共通磁脚１ｂからなるものと図７に
示すような平板状の磁心１ｃを組み合わせて図８のよう
にして使用してやれば、平板状の磁心１ｃは両面研磨す
ることによって厚み公差を小さくできるため、磁心１を
組み合わせた時の製品の高さ方向の公差を小さくでき
る。As shown in FIG. 8, a combination of a magnetic leg 1a and a common magnetic leg 1b fitted in the opening of the winding 2 as shown in FIG. 6 and a flat magnetic core 1c as shown in FIG. If used, the thickness tolerance of the flat plate-shaped magnetic core 1c can be reduced by polishing both sides, so that the tolerance in the height direction of the product when the magnetic cores 1 are combined can be reduced.
【００３６】また、図９は図１に示すような構成の巻線
２に磁心１を組み込んだものをエポキシ樹脂、液晶ポリ
マーなどの絶縁樹脂８でモールド成型したものであり、
インダクタ部品全体を絶縁樹脂８で封止しているため、
他の部品との絶縁が保てることとなり、部品の近接が可
能となる。つまり、基板上への実装時に高密度実装がで
きることや、パターン設計も容易となるのである。ま
た、全体を絶縁樹脂８で固めているため振動の抑制効果
もあり、その結果として唸り音の低減が可能となる。Further, FIG. 9 shows a structure in which the magnetic core 1 is incorporated in the winding wire 2 having the structure shown in FIG. 1 and is molded with an insulating resin 8 such as epoxy resin or liquid crystal polymer.
Since the entire inductor component is sealed with insulating resin 8,
Insulation from other parts can be maintained, and parts can be brought close to each other. That is, it is possible to perform high-density mounting at the time of mounting on the substrate, and pattern design becomes easy. In addition, since the whole is solidified with the insulating resin 8, there is also an effect of suppressing vibration, and as a result, it is possible to reduce the howling noise.
【００３７】さらにこの製造方法ではモールド金型内で
巻線２と磁心１を位置決めして成型するため、巻線２と
磁心１の固着が不要となり固着工程が削減できる。ま
た、全体が絶縁樹脂８で覆われているため製品の外観品
位が向上する。Further, in this manufacturing method, since the winding 2 and the magnetic core 1 are positioned and molded in the molding die, it is not necessary to fix the winding 2 and the magnetic core 1, and the fixing process can be reduced. Further, since the whole is covered with the insulating resin 8, the appearance quality of the product is improved.
【００３８】また、図９においては巻線素子２ａと一体
に設けた引出端子４を絶縁樹脂８によるモールド部の外
形に沿って引出し面実装端子としたものであり、磁心１
と引出端子４間を絶縁樹脂８で絶縁できる。また、この
絶縁樹脂８をそのまま引出端子４のベースとして共用で
きるため、端子を組み込む端子ベースが不要となり、一
体部品として金型成型するので寸法精度も向上する。Further, in FIG. 9, the lead-out terminal 4 provided integrally with the winding element 2a is used as a lead-out surface-mounting terminal along the outer shape of the mold portion made of the insulating resin 8.
The insulating resin 8 can insulate between the lead-out terminal 4 and the lead-out terminal 4. Further, since the insulating resin 8 can be used as it is as the base of the lead-out terminal 4, a terminal base for incorporating the terminal is not required and the dimensional accuracy is improved because it is molded as an integral part by die molding.
【００３９】なお、ここでは引出端子４は絶縁樹脂８に
よるモールド部の外形に沿って引出して面実装端子とし
ているが、磁心１の端面に沿って引出した場合でも磁心
１の表面を絶縁樹脂でコーティングしたり、絶縁抵抗の
高い磁心を採用すれば、同様の効果が得られるものであ
る。Although the lead-out terminal 4 is drawn out along the outer shape of the molded portion of the insulating resin 8 as a surface-mounting terminal here, the surface of the magnetic core 1 is made of insulating resin even when it is drawn out along the end face of the magnetic core 1. The same effect can be obtained by coating or using a magnetic core having high insulation resistance.
【００４０】また、巻線素子２ａを折り曲げて構成した
巻線２のみを絶縁樹脂８でモールドしてやれば（図示し
ていない）、折り曲げた巻線２の表面を絶縁樹脂８で覆
うこととなり、磁心１と巻線２の絶縁が安定する。さら
に巻線２の外形形状が安定することとなる。If only the winding 2 formed by bending the winding element 2a is molded with the insulating resin 8 (not shown), the surface of the bent winding 2 is covered with the insulating resin 8 and the magnetic core is formed. The insulation between 1 and winding 2 is stable. Further, the outer shape of the winding 2 is stabilized.
【００４１】また、この製造方法を用いると巻線２と磁
心１間の絶縁がさらに向上するため、工程品質が安定す
る。また、モールド後のコイルの形状も一定となるので
磁心１の組み込みも容易となり、自動化もやりやすくな
る。Further, when this manufacturing method is used, the insulation between the winding 2 and the magnetic core 1 is further improved, so that the process quality is stabilized. Further, since the shape of the coil after molding is constant, the magnetic core 1 can be easily incorporated, and automation can be facilitated.
【００４２】また、本発明の第１の実施の形態を示す図
１においては巻線素子２ａを１個使って説明している
が、巻線素子２ａを折り曲げて構成する巻線２を上下に
重ねて２個以上磁心１に組み込んだ構成（図示していな
い）とすれば、複数個のチョークを一体化できるため、
チョークコイルの使用個数を減らせる。また、一方を１
次巻線として他方を２次巻線としても使えるため、電圧
変換機能を持たせることが可能となるので１次、２次巻
線の両方に本折り曲げコイルを使えば、１次、２次巻線
とも抵抗値を究極まで下げられることとなり、大電流を
流しても低損失薄形のトランスを実現できる。In FIG. 1 showing the first embodiment of the present invention, one winding element 2a is used for explanation, but the winding 2 formed by bending the winding element 2a is vertically arranged. When two or more magnetic cores 1 are stacked together (not shown), a plurality of chokes can be integrated,
The number of choke coils used can be reduced. Also, set one to 1
Since the other can be used as the secondary winding as the secondary winding, it is possible to have a voltage conversion function. Therefore, if main bending coils are used for both the primary and secondary windings, the primary and secondary windings can be used. The resistance value of both wires can be lowered to the ultimate, and a low loss thin transformer can be realized even when a large current is applied.
【００４３】（実施の形態２）
次に本発明の第２の実施の形態について図１０を用いて
説明する。図１０は本発明のインダクタ部品の第２の実
施の形態を示す組立構成図である。図１０において１ｄ
は磁心１の延長部を示している。基本的な構成は本発明
の第１の実施の形態と同一である。大きく異なる点は磁
心１の共通磁脚１ｂおよび平板状磁心１ｃに磁心延長部
１ｄを設けて巻線２の外形以上の大きさとした点であ
り、磁束の溜まり場となる磁路が追加形成されることと
なり、背面部の断面積が実質上大きくなるのでコイルの
インダクタンスがアップする。つまり、直流重畳特性等
の磁気特性が向上する。このため、同一特性を確保する
ためには背面部の断面積を小さくできる。つまり、背面
の厚みを薄くできるため薄形化に有利となる。(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 10 is an assembly configuration diagram showing a second embodiment of the inductor component of the present invention. In FIG. 10, 1d
Indicates an extension of the magnetic core 1. The basic configuration is the same as that of the first embodiment of the present invention. A major difference is that the common magnetic leg 1b and the flat plate-shaped magnetic core 1c of the magnetic core 1 are provided with a magnetic core extension 1d to have a size larger than the outer shape of the winding 2, and a magnetic path serving as a magnetic flux accumulation field is additionally formed. This means that the back surface has a substantially large cross-sectional area, which increases the inductance of the coil. That is, magnetic characteristics such as DC superposition characteristics are improved. Therefore, the cross-sectional area of the back surface portion can be reduced in order to secure the same characteristics. That is, the thickness of the back surface can be reduced, which is advantageous for thinning.
【００４４】（実施の形態３）
次に本発明の第３の実施の形態について図１１を用いて
説明する。図１１は本発明のインダクタ部品の第３の実
施の形態を示す組立構成図である。図１１において１ｅ
は磁心１の肉厚部、２ｃは切欠部を示している。基本的
な構成は本発明の第２の実施の形態と同一である。大き
く異なる点は巻線２に不要な部分を削除した切欠部２ｃ
を設けた点と対応する磁心１の共通磁脚１ｂに一部分を
肉厚にした肉厚部１ｅを設けた点であり、厚みを厚くし
た部分で背面部の断面積をかせげるので磁気特性が向上
し、小形化が達成できる。(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 11 is an assembly configuration diagram showing a third embodiment of the inductor component of the present invention. In FIG. 11, 1e
Indicates a thick portion of the magnetic core 1 and 2c indicates a notch. The basic configuration is the same as that of the second embodiment of the present invention. The big difference is the notch 2c in which unnecessary parts are removed from the winding 2.
This is the point that the thick portion 1e having a partially thickened portion is provided on the common magnetic leg 1b of the magnetic core 1 corresponding to the point where the thickened portion is formed. However, miniaturization can be achieved.
【００４５】また、図１１には示していないが磁心１の
共通磁脚１ｂまたは平板状磁心１ｃに設けた肉厚部分１
ｅ間に磁気的なギャップが形成されるように構成するこ
とにより、上下の磁束の相互干渉がなくなるのでさらに
インダクタンスがアップし、磁気特性が向上する。Although not shown in FIG. 11, the thick portion 1 provided on the common magnetic leg 1b of the magnetic core 1 or the flat magnetic core 1c.
By forming a magnetic gap between e, the mutual interference of the upper and lower magnetic fluxes is eliminated, so that the inductance is further increased and the magnetic characteristics are improved.
【００４６】（実施の形態４）
次に本発明のインダクタ部品の第４の実施の形態につい
て図１２〜図１５を用いて説明する。図１２は本発明の
インダクタ部品の第４の実施の形態を示す組立構成図、
図１３は本発明の第４の実施の形態の連続打抜きコイル
の平面図、図１４（ａ）は本発明の第４の実施の形態の
折り曲げコイルの上面図、図１４（ｂ）は同正面図、図
１４（ｃ）は同側面図、図１５は本発明の第４の実施の
形態の完成品の断面図である。Fourth Embodiment Next, a fourth embodiment of the inductor component of the present invention will be described with reference to FIGS. FIG. 12 is an assembly configuration diagram showing a fourth embodiment of the inductor component of the present invention,
13 is a plan view of a continuous punching coil according to a fourth embodiment of the present invention, FIG. 14 (a) is a top view of a bending coil according to a fourth embodiment of the present invention, and FIG. 14 (b) is the same front view. FIG. 14 (c) is a side view of the same, and FIG. 15 is a sectional view of a completed product of the fourth embodiment of the present invention.
【００４７】図において１ｆは補助磁脚、１ｇは磁心１
に設けた凹部、９は巻線素子２ａの連結部２ｂの折り
目、８ａはモールド部に設けた凹部である。図において
基本的には本発明の第１の実施の形態と同一であり、大
きく異なる点は巻線２においては引出端子４を巻線素子
２ａの１辺のほぼ中央の位置から引き出している点であ
り、磁心１においては中央磁脚１ａを台形柱として磁脚
１ａの長辺が近接し並行となるように構成し外周縁部に
磁束のバイパス用として補助磁脚１ｆを設けている点と
底面部に引出端子４をはめ込む凹部１ｇを設けた点であ
る。In the figure, 1f is an auxiliary magnetic leg and 1g is a magnetic core 1.
Is a crease of the connecting part 2b of the winding element 2a, and 8a is a recess provided in the mold part. In the figure, it is basically the same as the first embodiment of the present invention, and a big difference is that in the winding 2, the lead-out terminal 4 is drawn out from a position approximately at the center of one side of the winding element 2a. In the magnetic core 1, the central magnetic leg 1a is formed as a trapezoidal column so that the long sides of the magnetic leg 1a are close and parallel to each other, and the auxiliary magnetic leg 1f is provided in the outer peripheral edge portion for bypassing the magnetic flux. The point is that a recess 1g for fitting the lead-out terminal 4 is provided on the bottom surface.
【００４８】以上の構成によれば、引出端子４を中央に
設けたのでインダクタの入出力端子のランドパターンを
中央部に設定できることになりプリント基板のパターン
設計が非常に容易となる。According to the above construction, since the lead terminal 4 is provided in the center, the land pattern of the input / output terminal of the inductor can be set in the center, and the pattern design of the printed circuit board becomes very easy.
【００４９】また、磁脚１ａの長辺が近接し並行となる
構成とすることによって対向する磁脚１ａの短辺側がそ
れぞれ外側に向かって配置されるため、４隅のコーナー
部を利用して補助磁脚１ｆ部を設けることができるた
め、性能向上が可能となる。Further, by arranging the long sides of the magnetic legs 1a to be close and parallel to each other, the short sides of the magnetic legs 1a facing each other are arranged outward, so that the four corners are used. Since the auxiliary magnetic leg 1f can be provided, the performance can be improved.
【００５０】さらに磁心１の外周縁部に磁束バイパス用
の補助磁脚１ｆを設けたことにより、コイルを組み込ま
ない補助磁脚１ｆ部で磁路が形成されることとなり、コ
イルのインダクタンスが大きくアップできる。つまり、
直流重畳特性等の磁気特性が向上するとともに漏れ磁束
も吸収できることになり、外部への漏れ磁束も減少する
という効果が生まれる。Further, since the auxiliary magnetic leg 1f for magnetic flux bypass is provided on the outer peripheral edge of the magnetic core 1, a magnetic path is formed in the auxiliary magnetic leg 1f where the coil is not incorporated, and the inductance of the coil is greatly increased. it can. That is,
The magnetic characteristics such as the DC superposition characteristics are improved, and the leakage magnetic flux can be absorbed, so that the leakage magnetic flux to the outside can be reduced.
【００５１】また、磁心１の底部に引出端子４をはめ込
む凹部１ｇを設けたことにより、凹部１ｇの寸法分だ
け、高さ方向の寸法が低減でき低背化ができる。Further, by providing the recess 1g into which the lead-out terminal 4 is fitted at the bottom of the magnetic core 1, the size in the height direction can be reduced by the size of the recess 1g and the height can be reduced.
【００５２】また、巻線２に関しては上述とは別に細か
い工夫も施している。まず、図１３の連続打ち抜きコイ
ルにおいては巻線素子２ａに設けた引出端子４の幅を各
巻線素子２ａの幅より広く形成しており、このことによ
って基板実装時の安定性が向上することおよび端子接続
部の局部発熱を少なくできる。Further, in addition to the above, the winding 2 is also finely devised. First, in the continuous punching coil of FIG. 13, the width of the lead-out terminal 4 provided in the winding element 2a is formed wider than the width of each winding element 2a, which improves the stability when mounting on the board. Local heat generation at the terminal connection can be reduced.
【００５３】さらに図１３に示すように巻線素子２ａの
連結部２ｂには折り目９を設けており、連結部２ｂの強
度を維持しながら、折り曲げ易くすることができる。Further, as shown in FIG. 13, a fold line 9 is provided on the connecting portion 2b of the winding element 2a, so that the bending can be facilitated while maintaining the strength of the connecting portion 2b.
【００５４】また、図１４に示すように折り曲げコイル
の引出端子４の厚みｔ１は巻線素子２ａの厚みｔ２より
薄く形成し、引出端子４の厚みｔ１を標準化している。
このことにより折り曲げ回数が異なり、板厚の異なるコ
イルであっても引出端子４の折り曲げ工程、治具等を共
用できるので生産効率が向上するものである。さらに絶
縁樹脂８でフルモールドするときも引出端子４の厚みが
同じため、金型が共用できるので設備費用も削減できる
という効果もある。Further, as shown in FIG. 14, the thickness t1 of the lead-out terminal 4 of the bending coil is made thinner than the thickness t2 of the winding element 2a, and the thickness t1 of the lead-out terminal 4 is standardized.
As a result, the number of times of bending is different, and even for coils having different plate thicknesses, the bending process of the lead-out terminal 4, the jig, etc. can be shared, and the production efficiency is improved. Further, even when full molding is performed with the insulating resin 8, since the thickness of the lead-out terminal 4 is the same, the mold can be shared, and there is an effect that the facility cost can be reduced.
【００５５】なお、図１５では図１２のインダクタを絶
縁樹脂８でモールドした完成品を示している。図１５に
おいては磁心１の底部に設けた凹部１ｇに加えて絶縁樹
脂８によるモールド底部には引出端子４をはめ込む凹部
８ａを設けており、凹部８ａの寸法分だけ高さ方向の寸
法が低減でき、低背化ができる効果が生まれるものであ
る。Note that FIG. 15 shows a completed product obtained by molding the inductor of FIG. 12 with insulating resin 8. In FIG. 15, in addition to the recess 1g provided at the bottom of the magnetic core 1, a recess 8a into which the lead-out terminal 4 is fitted is provided at the bottom of the mold made of the insulating resin 8, and the dimension in the height direction can be reduced by the size of the recess 8a. The effect of lowering the height is created.
【００５６】なお、本発明の実施の形態４の説明では磁
脚１ａの形状は台形柱としたが、三角柱であってもその
効果が得られることはいうまでもない。In the description of the fourth embodiment of the present invention, the shape of the magnetic leg 1a is a trapezoidal column, but it goes without saying that the effect can be obtained even if it is a triangular column.
【００５７】（実施の形態５）
次に本発明のインダクタ部品の第５の実施の形態につい
て図１６を用いて説明する。図１６は本発明の第５の実
施の形態を示すインダクタ部品の組立構成図であり、１
ｈは共通磁脚連結部の断面部を示している。図１６にお
いて基本的には本発明の第４の実施の形態と同一であ
り、大きく異なる点は磁心１の磁脚１ａを台形柱とした
ものにおいて方形状の共通磁脚１ｂの一つの対角線に対
して磁脚１ａの長辺が並行で他の対角線に対して磁脚１
ａの中心が一つの対角線方向にずれた構成としたもので
ある。(Fifth Embodiment) Next, a fifth embodiment of the inductor component according to the present invention will be described with reference to FIG. FIG. 16 is an assembly configuration diagram of an inductor component showing a fifth embodiment of the present invention.
“H” indicates a cross-sectional portion of the common magnetic leg connecting portion. In FIG. 16, it is basically the same as the fourth embodiment of the present invention, and a big difference is that in the case where the magnetic leg 1a of the magnetic core 1 is a trapezoidal pillar, one diagonal line of the rectangular common magnetic leg 1b is shown. In contrast, the long sides of the magnetic legs 1a are parallel to each other and the magnetic legs 1a
The center of a is displaced in one diagonal direction.
【００５８】以上の構成によれば、方形状の共通磁脚１
ｂの対角線の部分が磁脚１ａを連結する共通磁脚１ｂの
幅として有効利用できるので共通磁脚連結部の断面部１
ｈの面積が大きくなる。このことによりインダクタンス
がアップする。つまり、磁気特性を向上させることがで
きることとなる。According to the above configuration, the rectangular common magnetic leg 1
Since the diagonal part of b can be effectively used as the width of the common magnetic leg 1b connecting the magnetic legs 1a, the cross-section 1 of the common magnetic leg connecting portion
The area of h becomes large. This increases the inductance. That is, the magnetic characteristics can be improved.
【００５９】なお、本発明の実施の形態５の説明では磁
脚１ａの形状は台形柱としたが、三角柱であってもその
効果が得られることはいうまでもない。In the description of the fifth embodiment of the present invention, the magnetic leg 1a is shaped like a trapezoidal column, but it goes without saying that the effect can be obtained even if it is a triangular column.
【００６０】（実施の形態６）
次に本発明のインダクタ部品の第６の実施の形態につい
て図１７を用いて説明する。図１７は本発明のインダク
タ部品の第６の実施の形態を示す組立構成図である。(Sixth Embodiment) Next, a sixth embodiment of the inductor component according to the present invention will be described with reference to FIG. FIG. 17 is an assembly configuration diagram showing a sixth embodiment of the inductor component of the present invention.
【００６１】図１７において基本的には本発明の第１〜
第５の実施の形態と同一であり、大きく異なる点は磁心
１の材料をダストコア（圧粉鉄心）と呼ばれる材料とし
た点と図１６の構成に加えて補助磁脚１ｆを外周縁部に
設けたものである。ダストコア（圧粉鉄心）は金属磁性
粉を金型でプレス成型し、低温熱処理（一般的には８０
０℃前後）して固めた磁心材料であり、高温熱処理（一
般的には１０００℃以上）で焼成し、寸法を収縮させた
フェライトなどの磁性材料と比較すると透磁率は低い
が、磁性粉の周囲にフェライトよりも大きな磁気ギャッ
プを有する材料である。したがって、ダストコア（圧粉
鉄心）で磁気回路を構成する時は磁気ギャップが分散さ
れた構成とみなすことができるため、フェライトのよう
に集中的な磁気ギャップを必要としないので磁脚部分な
どに大きな磁気ギャップを設ける必要がないものであ
る。In FIG. 17, basically the first to the first aspects of the present invention are described.
The fifth embodiment is the same as the fifth embodiment, except that the magnetic core 1 is made of a material called a dust core (powdered iron core) and the auxiliary magnetic leg 1f is provided at the outer peripheral edge in addition to the configuration of FIG. It is a thing. The dust core (powdered iron core) is formed by press-molding metal magnetic powder with a die and heat-treating at low temperature (generally 80
It is a magnetic core material that is hardened by about 0 ° C), and has a lower magnetic permeability than a magnetic material such as ferrite that has been fired by high-temperature heat treatment (generally 1000 ° C or higher) and contracted in size, but It is a material that has a magnetic gap larger than that of ferrite. Therefore, when a magnetic circuit is composed of a dust core (powdered iron core), it can be considered that the magnetic gap is dispersed, so that it is not necessary to have a concentrated magnetic gap like ferrite. There is no need to provide a magnetic gap.
【００６２】以上の構成によれば、磁気ギャップ部が必
要なくなるので磁気ギャップ部での空気の振動が発生し
ない。このことにより、インダクタ部品に大きな負荷電
流を流したときでも唸り音の発生を非常に少なくでき
る。また、ダストコア（圧粉鉄心）は磁心形状の設計自
由度が高いのでコイルと組み合わせた最適な磁心形状と
できるのでインダクタ部品の小形薄形化設計が容易とな
る。According to the above construction, the magnetic gap portion is not necessary, and therefore air vibration does not occur in the magnetic gap portion. As a result, even when a large load current is applied to the inductor component, the howling noise can be extremely reduced. In addition, since the dust core (powdered iron core) has a high degree of freedom in designing the magnetic core shape, an optimum magnetic core shape can be obtained by combining it with a coil, which facilitates the miniaturization and design of inductor components.
【００６３】なお、図１７においては第５の実施の形態
を示す図１６の構成に加えて補助磁脚１ｆを外周縁部に
設けたものであり、この補助磁脚１ｆにより、第４の実
施の形態での説明と同様、磁気性能向上と漏れ磁束の低
減効果があることはいうまでもない。In FIG. 17, an auxiliary magnetic leg 1f is provided on the outer peripheral edge portion in addition to the configuration of FIG. 16 showing the fifth embodiment, and the auxiliary magnetic leg 1f is used for the fourth embodiment. Needless to say, similar to the description in the form (1), the magnetic performance is improved and the leakage flux is reduced.
【００６４】（実施の形態７）
次に本発明のインダクタ部品の第７の実施の形態につい
て図１８、図１９を用いて説明する。図１８は本発明の
インダクタ部品の第７の実施の形態を示す組立構成図、
図１９は同別の実施の形態を示す組立構成図であり、１
ｊは成型用磁性シートである。図１８において巻線部は
基本的には本発明の第１〜第５の実施の形態と同一であ
り、大きく異なる点は磁心１として金属粉とフェライト
磁性粉を混ぜ合せた金属フェライト複合磁性体（メタル
フェライトコンポジット材料）からなる成型用磁性シー
ト１ｊを用いて巻線２の上下から加熱加圧成型して組み
込んだ点である。また、図１９においては成型用磁性シ
ート１ｊの上下から、さらに高透磁率材料（フェライ
ト、アモルファス等の磁性薄膜他）で製作した平板状磁
心１ｃを接着などで組み込んだ点である。(Embodiment 7) Next, a seventh embodiment of the inductor component of the present invention will be described with reference to FIGS. FIG. 18 is an assembly configuration diagram showing a seventh embodiment of the inductor component of the present invention,
FIG. 19 is an assembly configuration diagram showing another embodiment of the present invention.
j is a magnetic sheet for molding. In FIG. 18, the winding part is basically the same as that of the first to fifth embodiments of the present invention, and a big difference is that the magnetic core 1 is a metal-ferrite composite magnetic body in which metal powder and ferrite magnetic powder are mixed. This is that the magnetic sheet for molding 1j made of (metal ferrite composite material) was used for heating and press molding from above and below the winding 2. Further, in FIG. 19, the flat magnetic core 1c made of a material having a high magnetic permeability (such as a magnetic thin film such as ferrite or amorphous) is incorporated from above and below the molding magnetic sheet 1j by bonding or the like.
【００６５】図１８の構成によると成型用磁性シート１
ｊは加熱加圧成型する際、ペースト状になり軟化するた
め、巻線２の開口部３等の隙間に入り込む。このため、
磁心１としてはフェライトやダストコアのように予め開
口部形状に対応した磁脚形状にしなくてもよいので磁心
形状をシンプルにでき、磁心金型の製作費用が節減でき
る。また、巻線２の開口部３に成型用磁性シート１ｊが
軟化して入り込むため、巻線２と磁脚間の隙間はほとん
どなくなる。このため、実質的に開口部３にはまりこむ
磁脚の断面積は大きく取れることになり、磁気性能を最
大限に伸ばすことが可能となる。According to the constitution of FIG. 18, the magnetic sheet 1 for molding is formed.
When j is heated and pressed, it becomes a paste and softens, so that it enters into the gap such as the opening 3 of the winding 2. For this reason,
Since the magnetic core 1 does not have to have a magnetic leg shape corresponding to the shape of the opening in advance like ferrite or dust core, the magnetic core shape can be simplified and the manufacturing cost of the magnetic core die can be reduced. Further, since the molding magnetic sheet 1j is softened and enters the opening 3 of the winding 2, there is almost no gap between the winding 2 and the magnetic leg. For this reason, the cross-sectional area of the magnetic leg that substantially fits into the opening 3 can be made large, and the magnetic performance can be maximized.
【００６６】以上の構成とするためには製造方法として
金属板から２個以上の開口部３を持った１ターン分の巻
線素子２ａを複数個連続するように形成し、この巻線素
子２ａの表面に絶縁皮膜７を形成した後、各巻線素子２
ａの連結部２ｂを折り曲げて所定のターン数の巻線２を
構成し、この巻線２の上下から成型用磁性シート１ｊを
加熱加圧成型で組み込む製造方法としたものであり、磁
心を組み込む際の接着工程が不要となるので設備や製造
コストの低減が達成できるものである。In order to have the above-mentioned structure, as a manufacturing method, a plurality of winding elements 2a for one turn having two or more openings 3 are continuously formed from a metal plate. After forming insulating film 7 on the surface of each winding element 2
This is a manufacturing method in which the connecting portion 2b of a is bent to form the winding 2 having a predetermined number of turns, and the molding magnetic sheet 1j is assembled from above and below the winding 2 by heat and pressure molding. Since the bonding step at that time is not necessary, reduction of equipment and manufacturing cost can be achieved.
【００６７】また、図１９のような構成にすると高透磁
率材料で上下から挟み込んだので磁気回路全体として実
質上の透磁率が向上し、インダクタ性能が大きくアップ
することとなる。Further, in the structure as shown in FIG. 19, since it is sandwiched between the high magnetic permeability materials from above and below, the magnetic permeability is substantially improved in the entire magnetic circuit, and the inductor performance is greatly improved.
【００６８】なお、ここでは成型用磁性シート１ｊとし
ては金属フェライト複合磁性体（メタルフェライトコン
ポジット材料）からなるとしているが、フェライト磁性
粉のみを樹脂に入れた材料（樹脂フェライト）などを使
用しても同様の効果が得られるものである。Although the molding magnetic sheet 1j is made of a metal ferrite composite magnetic material (metal ferrite composite material) here, a material (resin ferrite) containing only ferrite magnetic powder in a resin is used. Also has the same effect.
【００６９】[0069]
【発明の効果】以上のように本発明は、金属板を加工し
て磁心の２個以上の磁脚を挿入する２個以上の開口部を
もった１ターン分の巻線素子を複数個連続して形成した
ものを折曲して巻線とし、この巻線に開口部数に対応し
た磁脚を有する磁心を組み込み、巻線として少なくとも
巻始めおよび巻終わりとなる巻線素子に引出端子を一体
に設けるとともに、巻線素子から引き出される引出端子
を巻線素子の厚みより薄く形成したものであり、１ター
ンあたり１層となるように折り曲げコイルが形成される
ため、折り曲げコイル間に無駄な隙間がなくなり、導体
の占積率を究極まで高めることができる。つまり、導体
の断面積を大きくすることが可能となる。このことによ
って抵抗値を究極まで下げることが可能となり、大電流
を流しても低損失、低発熱とすることができるものであ
る。As described above, according to the present invention, a plurality of winding elements for one turn having two or more openings for processing a metal plate and inserting two or more magnetic legs of a magnetic core are continuously formed. Is formed into a winding, and a magnetic core having a magnetic leg corresponding to the number of openings is incorporated into this winding to form at least a winding.
Integrates an extraction terminal to the winding element at the beginning and end of winding
And a lead-out terminal that is pulled out from the winding element
Is formed thinner than the thickness of the winding element. Since the bending coil is formed so that there is one layer per turn, there is no useless gap between the bending coils, and the space factor of the conductor is maximized. be able to. That is, it is possible to increase the cross-sectional area of the conductor. As a result, the resistance value can be lowered to the ultimate, and low loss and low heat generation can be achieved even when a large current is passed.
【００７０】特に、巻線素子から引き出される引出端子
を巻線素子の厚みより薄く形成したものであり、折り曲
げ回数が異なり、板厚の異なるコイルであっても引出端
子の折り曲げ工程、治具等を共用できるので生産効率が
向上し、また、樹脂でフルモールドするときも引出端子
の厚みが同じため、金型が共用できるので設備費用も削
減できる。 In particular, a lead terminal drawn from the winding element
Is thinner than the thickness of the winding element,
Even if the coil has different stripping times and different plate thickness,
Since the child bending process and jigs can be shared, production efficiency is improved.
Improves and also leads terminals when fully molded with resin
Since the thickness of the mold is the same, the mold can be shared, which reduces equipment costs.
Can be reduced.
【００７１】また、金属板から磁心の２個以上の磁脚を
挿入する２個以上の開口部を持った１ターン分の巻線素
子を複数個連続するように形成し、この巻線素子の表面
に絶縁皮膜を形成した後、各巻線素子の連結部を折り曲
げて所定のターン数の巻線を構成し、この巻線に巻線の
開口部に合う磁脚を有する磁心を組み込み、かつ、金属
板から巻線素子群を形成する時に各巻線素子すべてに引
出端子を一体に形成し、巻線のターン数が決定してから
不必要な巻線素子の引出端子を切断する製造方法とした
ものであり、巻線機を使用しないで品質の安定した薄形
コイルを形成できるため、コイル製造工程のスピードア
ップが図れ、設備費の低減とともに製造コストの低減が
達成できるものである。 Further , two or more magnetic legs of the magnetic core are formed from the metal plate.
One turn of winding element with two or more openings to insert
The surface of this winding element
After forming an insulating film on the wire, bend the connecting part of each winding element.
Form a winding with a predetermined number of turns, and
Incorporates a magnetic core with a magnetic leg that fits the opening and
When forming a winding element group from the plate, pull all winding elements.
After forming the output terminal integrally and determining the number of turns of the winding
The manufacturing method was to cut the lead terminals of unnecessary winding elements.
It is a thin type with stable quality without using a winding machine.
Since the coil can be formed, it is possible to speed up the coil manufacturing process.
Can be achieved, and the production cost can be reduced as well as the equipment cost.
It can be achieved.
【００７２】このことにより、スイッチング電源の高周
波駆動に適した低損失、低発熱のインダクタ部品および
その製造方法を提供するという目的を達成できるのであ
る。Thus, it is possible to achieve the object of providing an inductor component having low loss and low heat generation, which is suitable for driving a switching power supply at a high frequency, and a manufacturing method thereof.
【図１】本発明のインダクタ部品の第１の実施の形態を
示す組立構成図FIG. 1 is an assembly configuration diagram showing a first embodiment of an inductor component of the present invention.
【図２】同連続形成した巻線素子の平面図FIG. 2 is a plan view of the continuously formed winding element.
【図３】同引出端子打抜き後の巻線の平面図FIG. 3 is a plan view of the winding after punching out the lead terminal.
【図４】（ａ）同折り曲げコイルの上面図 （ｂ）同正面図 （ｃ）同側面図FIG. 4A is a top view of the same bending coil. (B) The same front view (C) Side view
【図５】同巻線素子の断面図FIG. 5 is a sectional view of the winding element.
【図６】（ａ）同磁心の上面図 （ｂ）同正面図 （ｃ）同側面図FIG. 6A is a top view of the same magnetic core. (B) The same front view (C) Side view
【図７】（ａ）同平板状磁心の上面図 （ｂ）同正面図 （ｃ）同側面図FIG. 7A is a top view of the flat plate-shaped magnetic core. (B) The same front view (C) Side view
【図８】（ａ）同組み合わせた磁心の上面図 （ｂ）同正面図 （ｃ）同側面図FIG. 8 (a) is a top view of the magnetic core in the same combination. (B) The same front view (C) Side view
【図９】（ａ）同完成品の上面図 （ｂ）同正面図FIG. 9A is a top view of the same finished product. (B) The same front view
【図１０】本発明のインダクタ部品の第２の実施の形態
を示す組立構成図FIG. 10 is an assembly configuration diagram showing a second embodiment of an inductor component of the present invention.
【図１１】本発明のインダクタ部品の第３の実施の形態
を示す組立構成図FIG. 11 is an assembly configuration diagram showing a third embodiment of the inductor component of the present invention.
【図１２】本発明のインダクタ部品の第４の実施の形態
を示す組立構成図FIG. 12 is an assembly configuration diagram showing a fourth embodiment of an inductor component of the present invention.
【図１３】同連続打抜きコイルの平面図FIG. 13 is a plan view of the continuous punching coil.
【図１４】（ａ）同折り曲げコイルの上面図 （ｂ）同正面図 （ｃ）同側面図FIG. 14A is a top view of the same bending coil. (B) The same front view (C) Side view
【図１５】同完成品の断面図FIG. 15 is a sectional view of the finished product.
【図１６】本発明の第５の実施の形態を示すインダクタ
部品の組立構成図FIG. 16 is an assembly configuration diagram of an inductor component showing a fifth embodiment of the present invention.
【図１７】本発明のインダクタ部品の第６の実施の形態
を示す組立構成図FIG. 17 is an assembly configuration diagram showing an inductor component according to a sixth embodiment of the present invention.
【図１８】本発明のインダクタ部品の第７の実施の形態
を示す組立構成図FIG. 18 is an assembly configuration diagram showing a seventh embodiment of an inductor component of the present invention.
【図１９】同別の実施の形態を示す組立構成図FIG. 19 is an assembly configuration diagram showing another embodiment.
１ 磁心 １ａ 磁脚 １ｂ 共通磁脚 １ｃ 平板状磁心 １ｄ 磁心の延長部 １ｅ 磁心の肉厚部 １ｆ 補助磁脚 １ｇ 磁心に設けた凹部 １ｈ 共通磁脚連結部の断面部 １ｊ 成型用磁性シート ２ 巻線 ２ａ 巻線素子 ２ｂ 連結部 ２ｃ 切欠部 ３ 開口部 ４ 引出端子 ４ａ 不要な引出端子 ５ スリット ６ 切断部 ７ 絶縁皮膜 ８ 絶縁樹脂 ８ａ モールド部に設けた凹部 ９ 巻線素子の連結部の折り目 1 magnetic core 1a Magnetic leg 1b Common magnetic leg 1c Flat magnetic core 1d Extension of magnetic core 1e Thickness part of magnetic core 1f auxiliary magnetic leg 1g Magnetic core recess 1h Cross section of common magnetic leg connection 1j Magnetic sheet for molding 2 windings 2a winding element 2b connection part 2c Notch 3 openings 4 Lead-out terminal 4a Unnecessary lead-out terminal 5 slits 6 cutting part 7 Insulation film 8 insulating resin 8a Recess provided in the mold part 9 Folds at the connection of winding elements
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｈ０１Ｆ 37/00 Ｈ０１Ｆ 41/04 Ｄ 41/04 15/10 Ｐ (56)参考文献 特開 平７−263258（ＪＰ，Ａ) 特開 平５−243050（ＪＰ，Ａ) 特開 平10−12454（ＪＰ，Ａ) 特開 平６−251945（ＪＰ，Ａ) 特開 平７−326518（ＪＰ，Ａ) 特開 平10−149931（ＪＰ，Ａ) 特開 平３−259608（ＪＰ，Ａ) 特開 平７−245217（ＪＰ，Ａ) 特開 平８−130109（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01F 27/28 - 27/32 H01F 17/04 H01F 37/00 H01F 41/04 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI H01F 37/00 H01F 41/04 D 41/04 15/10 P (56) Reference JP-A-7-263258 (JP, A) JP-A-5-243050 (JP, A) JP-A-10-12454 (JP, A) JP-A-6-251945 (JP, A) JP-A-7-326518 (JP, A) JP-A-10-149931 (JP, A) JP 3-259608 (JP, A) JP 7-245217 (JP, A) JP 8-130109 (JP, A) (58) Fields investigated (Int. Cl. 7) , DB name) H01F 27/28-27/32 H01F 17/04 H01F 37/00 H01F 41/04
Claims (7)
を挿入する２個以上の開口部をもった１ターン分の巻線
素子を複数個連続して形成したものを折曲して巻線と
し、この巻線に開口部数に対応した磁脚を有する磁心を
組み込み、巻線として少なくとも巻始めおよび巻終わり
となる巻線素子に引出端子を一体に設けるとともに、巻
線素子から引き出される引出端子を巻線素子の厚みより
薄く形成したインダクタ部品。1. A bent one formed by continuously forming a winding element for one turn having two or more openings for inserting two or more magnetic legs of a magnetic core by processing a metal plate. To form a winding, and attach a magnetic core with a magnetic leg corresponding to the number of openings to this winding.
Built-in, at least winding start and winding end as winding
The winding element that becomes
From the thickness of the winding element
Thin inductor parts.
ターン分の巻線素子を複数個連続するように形成した表
面に絶縁皮膜を設けた各巻線素子の連結部を折り曲げて
所定のターン数の巻線を構成し、この巻線の上下から成
型用磁性シートを組み込み、巻線として少なくとも巻始
めおよび巻終わりとなる巻線素子に引出端子を一体に設
けるとともに、巻線素子から引き出される引出端子を巻
線素子の厚みより薄く形成したインダクタ部品。2. A metal plate having two or more openings.
A winding with a predetermined number of turns is formed by bending the connecting part of each winding element, which has an insulating film on the surface of the winding element that has been formed so as to be continuous for a number of turns. Incorporate a magnetic sheet and at least start winding as a winding
The lead-out terminal is integrated with the winding element that is the
And pull out the lead terminal that is pulled out from the winding element.
An inductor component that is thinner than the wire element thickness .
と共通磁脚からなるものを２個用い、磁心の磁脚を三角
柱または台形柱のいずれかとするとともに、磁脚の長辺
を近接し並行にした請求項１記載のインダクタ部品。3. Two magnetic cores, one consisting of a magnetic leg fitted in the opening of the winding and a common magnetic leg, are used, and the magnetic leg of the magnetic core is triangular.
Either a pillar or a trapezoidal pillar and the long side of the magnetic leg
The inductor component according to claim 1, wherein the inductors are close to each other and are parallel to each other .
と共通磁脚からなるものと平板状のものとを用い、磁心
の磁脚を三角柱または台形柱のいずれかとするととも
に、磁脚の長辺を近接し並行にした請求項１記載のイン
ダクタ部品。4. A magnetic core comprising a magnetic core that fits in an opening of a winding, a common magnetic leg, and a plate-shaped magnetic core.
If the magnetic legs of are either triangular prisms or trapezoidal prisms,
The inductor component according to claim 1 , wherein the long sides of the magnetic legs are close to and parallel to each other .
ものにおいて、方形状の共通磁脚の一つの対角線に対し
て磁脚の長辺が並行で他の対角線に対して磁脚の中心が
一つの対角線方向にずれた構成とした請求項３または請
求項４に記載のインダクタ部品。5. A magnetic core having a triangular leg or a trapezoidal column, wherein the long side of the magnetic leg is parallel to one diagonal of a rectangular common magnetic leg, and the center of the magnetic leg is to the other diagonal. The inductor component according to claim 3 or 4, wherein the inductor component is offset in one diagonal direction.
する２個以上の開口部を持った１ターン分の巻線素子を
複数個連続するように形成し、この巻線素子の表面に絶
縁皮膜を形成した後、各巻線素子の連結部を折り曲げて
所定のターン数の巻線を構成し、この巻線に巻線の開口
部に合う磁脚を有する磁心を組み込み、 かつ、金属板か
ら巻線素子群を形成する時に各巻線素子すべてに引出端
子を一体に形成し、巻線のターン数が決定してから不必
要な巻線素子の引出端子を切断するインダクタ部品の製
造方法。6. A plurality of winding elements for one turn having two or more openings for inserting two or more magnetic legs of a magnetic core are continuously formed from a metal plate. After forming an insulating film on the surface, bend the connecting part of each winding element to form a winding with a predetermined number of turns , and incorporate a magnetic core having a magnetic leg matching the opening of the winding into this winding , and Metal plate
When forming a winding element group from the
It is indispensable after forming the child integrally and determining the number of turns of the winding.
A method of manufacturing an inductor component in which a lead terminal of a required winding element is cut .
ターン分の巻線素子を複数個連続するように形成し、こ
の巻線素子の表面に絶縁皮膜を形成した後、各巻線素子
の連結部を折り曲げて所定のターン数の巻線を構成し、
この巻線の上下から成型用磁性シートを加熱加圧成型で
組み込み、金属板から巻線素子群を形成する時に各巻線
素子すべてに引出端子を一体に形成し、巻線のターン数
が決定してから不必要な巻線素子の引出端子を切断する
インダクタ部品の製造方法。7. A metal plate having two or more openings.
A plurality of winding elements for turns are formed continuously, an insulating film is formed on the surface of the winding element, and then the connecting portion of each winding element is bent to form a winding with a predetermined number of turns.
The magnetic sheet for molding is heated and pressed from above and below this winding.
Each winding when assembled and forming winding element group from metal plate
The number of turns of the winding is formed by integrally forming the lead terminals on all the elements.
Method of manufacturing an inductor component, in which the lead terminal of the unnecessary winding element is cut after the above is determined .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20862699A JP3368871B2 (en) | 1999-07-23 | 1999-07-23 | Inductor component and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20862699A JP3368871B2 (en) | 1999-07-23 | 1999-07-23 | Inductor component and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001035731A JP2001035731A (en) | 2001-02-09 |
| JP3368871B2 true JP3368871B2 (en) | 2003-01-20 |
Family
ID=16559351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20862699A Expired - Fee Related JP3368871B2 (en) | 1999-07-23 | 1999-07-23 | Inductor component and manufacturing method thereof |
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| Country | Link |
|---|---|
| JP (1) | JP3368871B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018082092A (en) * | 2016-11-17 | 2018-05-24 | Tdk株式会社 | Coil component and coil device |
| WO2022109120A1 (en) * | 2020-11-18 | 2022-05-27 | Radyne Corporation | Multi-layer parallel plane inductor with field control pockets |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3707461B2 (en) * | 2002-09-13 | 2005-10-19 | 松下電器産業株式会社 | Coil parts manufacturing method |
| JP3707460B2 (en) * | 2002-09-13 | 2005-10-19 | 松下電器産業株式会社 | Coil parts |
| JP2004349617A (en) * | 2003-05-26 | 2004-12-09 | System Giken:Kk | Dust core for reactor |
| TWI272623B (en) | 2005-12-29 | 2007-02-01 | Ind Tech Res Inst | Power inductor with heat dissipating structure |
| JP5084801B2 (en) * | 2009-08-31 | 2012-11-28 | 株式会社村田製作所 | Inductor and DC-DC converter |
| KR101105536B1 (en) | 2010-06-04 | 2012-01-13 | 전주대학교 산학협력단 | Planar Transformer |
| KR101366675B1 (en) | 2012-12-26 | 2014-02-26 | (주)창성 | Manufacturing method of a magnetic core of the micro inductor |
| KR101433617B1 (en) | 2014-05-01 | 2014-08-25 | (주)다코웰 | Metal core winding inductor |
| DE112019002188T5 (en) * | 2018-04-27 | 2021-02-11 | Panasonic Intellectual Property Management Co., Ltd. | INDUCTOR |
-
1999
- 1999-07-23 JP JP20862699A patent/JP3368871B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018082092A (en) * | 2016-11-17 | 2018-05-24 | Tdk株式会社 | Coil component and coil device |
| WO2022109120A1 (en) * | 2020-11-18 | 2022-05-27 | Radyne Corporation | Multi-layer parallel plane inductor with field control pockets |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001035731A (en) | 2001-02-09 |
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