JPH08273934A - Coil component - Google Patents
Coil componentInfo
- Publication number
- JPH08273934A JPH08273934A JP7788295A JP7788295A JPH08273934A JP H08273934 A JPH08273934 A JP H08273934A JP 7788295 A JP7788295 A JP 7788295A JP 7788295 A JP7788295 A JP 7788295A JP H08273934 A JPH08273934 A JP H08273934A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- coil
- magnetic thin
- thin films
- thin film
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、コイル部品、特にチョ
ークコイルやトランスやノイズフィルタ等として使用さ
れるコイル部品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil component, particularly a coil component used as a choke coil, a transformer, a noise filter or the like.
【０００２】[0002]
【従来の技術】従来より、渦巻状のコイル導体を表面に
形成した絶縁体シートを積層して構成した積層型コイル
部、あるいはボビンに線材を巻回した低背の巻線型コイ
ル部を、二つの磁性体コアで挟んだ構造のコイル部品が
知られている。そして、高周波用コイル部品の場合、磁
性体コアの渦電流損を減少させるため磁性体を薄膜化
し、この磁性体薄膜を積層したものを磁性体コアとして
使用している。2. Description of the Related Art Conventionally, a laminated coil portion formed by laminating insulating sheets having spiral coil conductors formed on the surface thereof, or a low-profile wire wound coil portion formed by winding a wire on a bobbin has been A coil component having a structure sandwiched between two magnetic cores is known. In the case of a coil component for high frequency, in order to reduce the eddy current loss of the magnetic material core, the magnetic material is made into a thin film, and the laminated magnetic material thin film is used as the magnetic material core.
【０００３】例えば、図１０及び図１１に示すように、
コイル部品８１は、渦巻状コイル導体８２をそれぞれ表
面に形成した絶縁体シート８３を複数枚積層して積層型
コイル部８５を形成している。各渦巻状コイル導体８２
は絶縁体シート８３に設けたビアホール８４を介して直
列に接続してコイルを構成している。このコイル部８５
は磁性体コア８７，８８にて挟まれている。磁性体コア
８７，８８はそれぞれ磁性体薄膜８６を積層して構成し
たものである。For example, as shown in FIGS. 10 and 11,
In the coil component 81, a plurality of insulator sheets 83 each having a spiral coil conductor 82 formed on the surface thereof are laminated to form a laminated coil portion 85. Each spiral coil conductor 82
Are connected in series through via holes 84 provided in the insulator sheet 83 to form a coil. This coil part 85
Is sandwiched between magnetic cores 87 and 88. The magnetic cores 87 and 88 are each formed by laminating magnetic thin films 86.
【０００４】この渦巻状コイル導体８２が構成している
コイルに電流が流れると、図１２に示すように、磁力線
９０が発生する。図１２は図１１の中で点線にて囲まれ
た領域Ａの磁力線図である。When a current flows through the coil formed by the spiral coil conductor 82, magnetic force lines 90 are generated as shown in FIG. FIG. 12 is a magnetic force diagram of a region A surrounded by a dotted line in FIG.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、図１３
に示すように、磁性体コア８７，８８においては、磁性
体薄膜８６相互間に空気層９２が形成されている。一般
に、磁性体薄膜８６の比透磁率は１０００〜数万である
のに対して、空気層９２の比透磁率は１である。従っ
て、図１３に示すように、磁力線９０はコイル部８５に
近い磁性体薄膜８６に偏って通る。すなわち、内側の磁
性体薄膜８６により多くの磁力線９０が集中している。
図１３は図１２の中で点線にて囲まれた領域Ｂの磁力線
分布図である。However, as shown in FIG.
As shown in FIG. 7, in the magnetic cores 87 and 88, the air layer 92 is formed between the magnetic thin films 86. In general, the magnetic thin film 86 has a relative magnetic permeability of 1000 to tens of thousands, while the air layer 92 has a relative magnetic permeability of 1. Therefore, as shown in FIG. 13, the magnetic force lines 90 are biased to the magnetic thin film 86 near the coil portion 85. That is, many magnetic force lines 90 are concentrated on the inner magnetic thin film 86.
FIG. 13 is a distribution diagram of magnetic force lines in a region B surrounded by a dotted line in FIG.
【０００６】その結果、磁力線９０が各磁性体薄膜８６
を均等に通る場合と比較して、コイル部品８１は磁束飽
和が起き易く、磁束密度も高くなるため渦電流損やヒス
テリシス損も大きくなるという問題があった。そこで、
本発明の目的は、各磁性体薄膜を通る磁力線の数を均等
化でき、磁束飽和が起きにくく、渦電流損やヒステリシ
ス損の少ないコイル部品を提供することにある。As a result, the lines of magnetic force 90 are generated by the magnetic thin films 86.
In comparison with a case where the coil component 81 passes evenly, there is a problem that the magnetic flux saturation is likely to occur in the coil component 81 and the magnetic flux density becomes high, so that the eddy current loss and the hysteresis loss also increase. Therefore,
An object of the present invention is to provide a coil component that can equalize the number of magnetic force lines passing through each magnetic thin film, hardly cause magnetic flux saturation, and reduce eddy current loss and hysteresis loss.
【０００７】[0007]
【課題を解決するための手段】以上の目的を達成するた
め、本発明に係る請求項１記載のコイル部品は、（ａ）
磁性体薄膜を積層して構成した二つの磁性体コアと、
（ｂ）前記二つの磁性体コアの間に配設された、少なく
とも絶縁体とコイルにて構成したコイル部とを備え、
（ｃ）前記磁性体コアを構成している磁性体薄膜のうち
少なくとも隣接する二つの磁性体薄膜において、コイル
部に近い磁性体薄膜の方が磁性体薄膜内を通る磁力線の
数を抑えるための欠損部の形状が大きいこと、を特徴と
する。ここに、磁性体薄膜内を通る磁力線の数を抑える
ための欠損部としては、具体的には例えば磁性体薄膜に
設けた切欠けやスリット等がある。In order to achieve the above object, a coil component according to claim 1 of the present invention comprises (a)
Two magnetic cores formed by laminating magnetic thin films,
(B) At least a coil portion formed of an insulator and a coil is provided between the two magnetic cores,
(C) In at least two adjacent magnetic thin films among the magnetic thin films forming the magnetic core, the magnetic thin film closer to the coil portion is for suppressing the number of magnetic force lines passing through the magnetic thin film. The shape of the defective portion is large. Here, as the defective portion for suppressing the number of magnetic force lines passing through the magnetic thin film, specifically, for example, a notch or a slit provided in the magnetic thin film.
【０００８】また、本発明に係る請求項４記載のコイル
部品は、コイル部が絶縁体とコイルと磁性体にて構成さ
れ、前記コイルが前記磁性体を周回していることを特徴
とする。The coil component according to a fourth aspect of the present invention is characterized in that the coil portion is composed of an insulator, a coil, and a magnetic material, and the coil surrounds the magnetic material.
【０００９】[0009]
【作用】磁性体薄膜に設けられた欠損部の形状が大きく
なるにつれて、磁性体薄膜内を通る磁力線の数を抑える
働きが大きくなる。従って、磁性体コアを構成している
磁性体薄膜のうち少なくとも隣接する二つの磁性体薄膜
において、コイル部に近い磁性体薄膜の方、すなわち磁
力線が従来集中していた磁性体薄膜の方が欠損部の形状
が大きいため、欠損部が磁力線の集中を阻止する。すな
わち、磁力線が従来集中していた磁性体薄膜を通る磁力
線の数が減少し、磁力線が従来少なかった磁性体薄膜を
通る磁力線の数が増加する。この結果、それぞれの磁性
体薄膜を通る磁力線の数が均等化される。The function of suppressing the number of magnetic force lines passing through the magnetic thin film increases as the shape of the defect portion provided in the magnetic thin film increases. Therefore, in at least two adjacent magnetic thin films among the magnetic thin films forming the magnetic core, the magnetic thin film closer to the coil portion, that is, the magnetic thin film where the magnetic force lines are conventionally concentrated is defective. Since the shape of the portion is large, the defective portion prevents the concentration of magnetic force lines. That is, the number of magnetic force lines passing through the magnetic thin film, where the magnetic force lines are conventionally concentrated, is reduced, and the number of magnetic force lines passing through the magnetic thin film, where the magnetic force lines are conventionally small, is increased. As a result, the number of magnetic force lines passing through the respective magnetic thin films is equalized.
【００１０】また、コイル部が絶縁体とコイルと磁性体
にて構成され、前記コイルが前記磁性体を周回すること
により、コイル部品のインダクタンスが大きくなる。Further, the coil portion is composed of an insulator, a coil and a magnetic material, and the coil goes around the magnetic material, so that the inductance of the coil component increases.
【００１１】[0011]
【実施例】以下、本発明に係るコイル部品の実施例につ
いて添付図面を参照して説明する。なお、各実施例にお
いて、同一部品及び同一部分には同じ符号を付した。 ［第１実施例、図１〜図４］図１及び図２に示すよう
に、コイル部品１は、積層型コイル部５を二つの磁性体
コア１１，１２にて挟んだ構造をしている。積層型コイ
ル部５は渦巻状コイル導体３をそれぞれ表面に設けた絶
縁体シート２を複数枚積層したものである。各渦巻状コ
イル導体３は絶縁体シート２に設けたビアホール４を介
して直列に電気的に接続され、コイルを構成している。Embodiments of the coil component according to the present invention will be described below with reference to the accompanying drawings. In each embodiment, the same parts and the same parts are designated by the same reference numerals. [First Embodiment, FIGS. 1 to 4] As shown in FIGS. 1 and 2, the coil component 1 has a structure in which a laminated coil portion 5 is sandwiched between two magnetic cores 11 and 12. . The laminated coil portion 5 is formed by laminating a plurality of insulating sheets 2 each having a spiral coil conductor 3 provided on the surface thereof. The spiral coil conductors 3 are electrically connected in series through via holes 4 provided in the insulating sheet 2 to form a coil.
【００１２】磁性体コア１１，１２は、磁性体薄膜１６
の外周縁部を切り欠いた後、エッチング加工又は打ち抜
き加工をして中央部に矩形状の切欠け穴１３を形成した
ものを切欠け穴１３と外周縁部の切欠けの寸法を種々変
えて準備し、この磁性体薄膜１６と切欠け穴１３を設け
ない磁性体薄膜１６を複数枚積層したものである。この
とき、隣接する２枚の磁性体薄膜１６において、コイル
部５に近い磁性体薄膜１６の方が外周縁部の切欠けが大
きく（すなわち、外形寸法が小さく）かつ、切欠け穴１
３の寸法が大きくなるように配設する。こうして、中央
部に階段状の傾斜面を有したすり鉢型凹部を備え、かつ
外周縁部に階段状の傾斜面を備えた磁性体コア１１，１
２が製作される。磁性体薄膜１６の材料としては、例え
ばアモルファス合金、パーマロイ、センダスト等が用い
られる。The magnetic cores 11 and 12 are made of a magnetic thin film 16.
After notching the outer peripheral edge portion of the above, a rectangular notch hole 13 is formed in the central portion by etching or punching, and various dimensions of the notch hole 13 and the notch of the outer peripheral edge portion are changed. The magnetic thin film 16 is prepared and a plurality of magnetic thin films 16 not provided with the notch holes 13 are laminated. At this time, in the two adjacent magnetic thin films 16, the magnetic thin film 16 closer to the coil portion 5 has a larger cutout at the outer peripheral edge (that is, a smaller outer dimension) and the cutout hole 1
It is arranged so that the dimension of 3 becomes large. Thus, the magnetic cores 11, 1 having the mortar-shaped recess having the stepwise inclined surface in the central portion and the stepwise inclined surface at the outer peripheral edge portion
2 is produced. As the material of the magnetic thin film 16, for example, amorphous alloy, permalloy, sendust, or the like is used.
【００１３】以上の構造からなるコイル部品１におい
て、渦巻状コイル導体３が構成しているコイルに電流が
流れると、図３に示すように、磁力線２０が発生する。
図３は図２の中で点線にて囲まれた領域Ａの磁力線図で
ある。In the coil component 1 having the above structure, when a current flows through the coil formed by the spiral coil conductor 3, magnetic force lines 20 are generated as shown in FIG.
FIG. 3 is a magnetic force diagram of a region A surrounded by a dotted line in FIG.
【００１４】ところで、図４に示すように、磁性体コア
１１，１２においては、磁性体薄膜１６相互間に空気層
２２が形成されている。従って、仮に従来のコイル部品
であれば、コイル部に近い磁性体薄膜に磁力線が集中す
ることになる。しかしながら、第１実施例のコイル部品
１は磁性体薄膜１６に形成されている切欠け１３や外周
縁部の切欠けがコイル部５に近づくに従って大きくなっ
ている。切欠け穴１３や外周縁部の切欠けは、その形状
が大きくなるにつれて、磁性体薄膜１６の内部を通る磁
力線２０の数を抑える効果が大きくなる。従って、コイ
ル部５に近い磁性体薄膜１６を通る磁力線２０の数が従
来より減少し、逆に、コイル部５から遠い磁性体薄膜１
６を通る磁力線２０の数が従来より増加する。図４は有
限要素法を用いて磁力線の分布を解析した結果を示すも
ので、図３の中で点線にて囲まれた領域Ｂの磁力線分布
図である。この結果、それぞれの磁性体薄膜１６を通る
磁力線の数が均等化され、磁束飽和が起きにくく、渦電
流損やヒステリシス損の少ないコイル部品１が得られ
る。By the way, as shown in FIG. 4, in the magnetic cores 11 and 12, an air layer 22 is formed between the magnetic thin films 16. Therefore, in the case of the conventional coil component, the magnetic force lines concentrate on the magnetic thin film near the coil portion. However, in the coil component 1 of the first embodiment, the notch 13 formed in the magnetic thin film 16 and the notch in the outer peripheral edge portion become larger as they approach the coil portion 5. As the shape of the notch hole 13 and the notch of the outer peripheral edge portion becomes larger, the effect of suppressing the number of magnetic force lines 20 passing through the inside of the magnetic thin film 16 becomes greater. Therefore, the number of magnetic force lines 20 passing through the magnetic thin film 16 close to the coil portion 5 is smaller than in the conventional case, and conversely, the magnetic thin film 1 far from the coil portion 5 is provided.
The number of magnetic field lines 20 passing through 6 increases more than in the conventional case. FIG. 4 shows a result of analyzing the distribution of magnetic force lines by using the finite element method, and is a magnetic force line distribution diagram of a region B surrounded by a dotted line in FIG. As a result, the number of magnetic lines of force passing through the respective magnetic thin films 16 is equalized, magnetic flux saturation hardly occurs, and the coil component 1 with less eddy current loss and hysteresis loss can be obtained.
【００１５】［第２実施例、図５及び図６］図５及び図
６に示すように、コイル部品３１は積層型コイル部５を
二つの磁性体コア３２，３３にて挟んだ構造をしてい
る。積層型コイル部５は前記第１実施例で説明したもの
と同様のものである。磁性体コア３２，３３は、磁性体
薄膜３６の中央部に略円形状のスリット３４を形成した
ものをスリット３４の外形寸法を種々変えて準備し、こ
の磁性体薄膜３６とスリット３４を設けない磁性体薄膜
３６を複数枚積層したものである。このとき、隣接する
２枚の磁性体薄膜３６において、コイル部５に近い磁性
体薄膜３６の方がスリット３４の形状が大きくなるよう
に配設する。このスリット３４は、その形状が大きくな
るにつれて、磁性体薄膜３６の内部を通る磁力線の数を
抑える効果が大きくなる。[Second Embodiment, FIGS. 5 and 6] As shown in FIGS. 5 and 6, the coil component 31 has a structure in which the laminated coil portion 5 is sandwiched between two magnetic cores 32 and 33. ing. The laminated coil section 5 is the same as that described in the first embodiment. The magnetic cores 32 and 33 are prepared by forming a substantially circular slit 34 in the central portion of a magnetic thin film 36 by changing the outer dimensions of the slit 34 variously, and not providing the magnetic thin film 36 and the slit 34. A plurality of magnetic thin films 36 are laminated. At this time, in the two adjacent magnetic thin films 36, the magnetic thin film 36 closer to the coil portion 5 is arranged so that the slit 34 has a larger shape. As the shape of the slit 34 increases, the effect of suppressing the number of magnetic lines of force passing through the inside of the magnetic thin film 36 increases.
【００１６】以上の構造からなるコイル部品３１におい
て、渦巻状コイル導体３が構成しているコイルに電流が
流れると、コイルの周囲に磁力線が発生する。そして、
磁性体薄膜３６に形成されているスリット３４はコイル
部５に近づくにつれて大きくなっているので、コイル部
５に近い磁性体薄膜３６を通る磁力線の数が従来より減
り、逆に、コイル部５から遠い磁性体薄膜３６を通る磁
力線の数が従来より増える。この結果、それぞれの磁性
体薄膜３６を通る磁力線の数が均等化され、磁束飽和が
起きにくく、渦電流損やヒステリシス損の少ないコイル
部品３１が得られる。In the coil component 31 having the above structure, when a current flows through the coil formed by the spiral coil conductor 3, magnetic lines of force are generated around the coil. And
Since the slit 34 formed in the magnetic thin film 36 becomes larger as it approaches the coil portion 5, the number of magnetic lines of force passing through the magnetic thin film 36 near the coil portion 5 decreases from the conventional one, and conversely, from the coil portion 5. The number of lines of magnetic force passing through the far magnetic thin film 36 is increased as compared with the conventional case. As a result, the number of magnetic lines of force passing through the respective magnetic thin films 36 is equalized, magnetic flux saturation is unlikely to occur, and a coil component 31 with less eddy current loss and hysteresis loss can be obtained.
【００１７】［第３実施例、図７］図７に示すように、
コイル部品４１は、第２実施例のコイル部品３１と同様
に、積層型コイル部５を二つの磁性体コア３２，３３に
て挟んだ構造をしている。ただし、第２実施例のコイル
部品３１と異なる部分は、コイル部５を構成している絶
縁体シート２において、渦巻状コイル導体３の内側の領
域の材料を比透磁率の高い磁性体（例えばフェライト
等）４２に替えていることである。これにより、コイル
が磁性体４２を周回することになり、各磁性体薄膜３６
を通る磁力線の数を均等化しつつ、コイル部品４１のイ
ンダクタンスを大きくすることができる。[Third Embodiment, FIG. 7] As shown in FIG.
Like the coil component 31 of the second embodiment, the coil component 41 has a structure in which the laminated coil portion 5 is sandwiched between two magnetic cores 32 and 33. However, the part different from the coil component 31 of the second embodiment is that the material of the region inside the spiral coil conductor 3 in the insulator sheet 2 forming the coil portion 5 is a magnetic material having a high relative magnetic permeability (for example, (Eg, ferrite) 42. As a result, the coil goes around the magnetic body 42, and each magnetic body thin film 36
It is possible to increase the inductance of the coil component 41 while equalizing the number of magnetic force lines passing through.
【００１８】［第４実施例、図８］図８に示すように、
コイル部品５１は巻線型コイル部５５を二つの磁性体コ
ア３２，３３にて挟んだ構造をしている。磁性体コア３
２，３３は前記第２実施例で説明したものと同様のもの
である。巻線型コイル部５５は樹脂製ボビン５２の外周
に線材５３を巻回したもので、いわゆる低背の巻線コイ
ルである。この巻線コイルの上面及び下面にそれぞれ磁
性体コア３２，３３が接合している。以上の構造からな
るコイル部品５１は前記第２実施例のコイル部品３１と
同様の作用効果を奏する。[Fourth Embodiment, FIG. 8] As shown in FIG.
The coil component 51 has a structure in which a wire-wound coil portion 55 is sandwiched between two magnetic cores 32 and 33. Magnetic core 3
Reference numerals 2 and 33 are the same as those described in the second embodiment. The wire-wound coil portion 55 is formed by winding the wire material 53 around the outer circumference of the resin bobbin 52, and is a so-called low-height wire-wound coil. Magnetic cores 32 and 33 are bonded to the upper surface and the lower surface of this winding coil, respectively. The coil component 51 having the above structure has the same effect as the coil component 31 of the second embodiment.
【００１９】［他の実施例］なお、本発明に係るコイル
部品は前記実施例に限定するものではなく、その要旨の
範囲内で種々に変形することができる。切欠けやスリッ
トの形状は任意であり、前記実施例のように矩形や円形
以外に、多角形等でもよい。[Other Embodiments] The coil component according to the present invention is not limited to the above embodiment, but can be variously modified within the scope of the gist thereof. The shape of the notch or slit is arbitrary, and it may be polygonal or the like other than the rectangular or circular shape as in the above-mentioned embodiment.
【００２０】さらに、前記実施例では切欠けやスリット
の寸法が多段階に変化する磁性体コアを使用している
が、必らずしもこれに限定されるものではなく、例えば
図９に示すように、もっと簡素に２段階に寸法が変化す
る磁性体コア７２，７３を使用したコイル部品７１であ
ってもよい。Further, in the above-mentioned embodiment, the magnetic core in which the dimensions of the notches and slits change in multiple steps is used, but the present invention is not necessarily limited to this, and it is shown in FIG. 9, for example. As described above, the coil component 71 using the magnetic cores 72, 73 whose dimensions change in two steps more simply may be used.
【００２１】[0021]
【発明の効果】以上の説明で明らかなように、本発明に
よれば、磁性体コアを構成している磁性体薄膜のうち少
なくとも隣接する二つの磁性体薄膜において、コイル部
に近い磁性体薄膜の方が欠損部、例えば切欠けやスリッ
トの形状が大きいので、欠損部が磁力線の集中を阻止し
てそれぞれの磁性体薄膜を通る磁力線の数を均等化す
る。この結果、磁束飽和が起きにくく、渦電流損やヒス
テリシス損の少ないコイル部品が得られる。As is apparent from the above description, according to the present invention, among at least two adjacent magnetic thin films among the magnetic thin films forming the magnetic core, the magnetic thin film close to the coil portion is used. In this case, since the shape of the defective portion, for example, the notch or the slit is larger, the defective portion prevents the concentration of magnetic force lines and equalizes the number of magnetic force lines passing through the respective magnetic thin films. As a result, it is possible to obtain a coil component in which magnetic flux saturation is unlikely to occur and eddy current loss and hysteresis loss are small.
【図１】本発明に係るコイル部品の第１実施例を示す分
解斜視図。FIG. 1 is an exploded perspective view showing a first embodiment of a coil component according to the present invention.
【図２】図１のII−II断面図。FIG. 2 is a sectional view taken along line II-II of FIG.
【図３】図２の中で点線にて囲まれた領域Ａの磁力線
図。3 is a magnetic force diagram of a region A surrounded by a dotted line in FIG.
【図４】図３の中で点線にて囲まれた領域Ｂの磁力線分
布図。4 is a distribution diagram of magnetic field lines in a region B surrounded by a dotted line in FIG.
【図５】本発明に係るコイル部品の第２実施例を示す分
解斜視図。FIG. 5 is an exploded perspective view showing a second embodiment of the coil component according to the present invention.
【図６】図５のVI−VI断面図。FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;
【図７】本発明に係るコイル部品の第３実施例を示す断
面図。FIG. 7 is a sectional view showing a coil component according to a third embodiment of the present invention.
【図８】本発明に係るコイル部品の第４実施例を示す断
面図。FIG. 8 is a sectional view showing a coil component according to a fourth embodiment of the present invention.
【図９】他の実施例を示す断面図。FIG. 9 is a cross-sectional view showing another embodiment.
【図１０】従来のコイル部品を示す分解斜視図。FIG. 10 is an exploded perspective view showing a conventional coil component.
【図１１】図１０のXI−XI断面図。11 is a sectional view taken along line XI-XI of FIG.
【図１２】図１１の中で点線にて囲まれた領域Ａの磁力
線図。FIG. 12 is a magnetic force diagram of a region A surrounded by a dotted line in FIG.
【図１３】図１２の中で点線にて囲まれた領域Ｂの磁力
線分布図。13 is a distribution diagram of magnetic field lines in a region B surrounded by a dotted line in FIG.
１…コイル部品 ２…絶縁体シート ３…渦巻状コイル用導体 ５…積層型コイル部 １１，１２…磁性体コア １３…切欠け穴 １６…磁性体薄膜 ３１…コイル部品 ３２，３３…磁性体コア ３４…スリット ３６…磁性体薄膜 ４１…コイル部品 ４２…磁性体 ５１…コイル部品 ５２…ボビン ５３…線材 ５５…巻線型コイル部 ７１…コイル部品 ７２，７３…磁性体コア DESCRIPTION OF SYMBOLS 1 ... Coil component 2 ... Insulator sheet 3 ... Spiral coil conductor 5 ... Laminated coil part 11, 12 ... Magnetic core 13 ... Notch hole 16 ... Magnetic thin film 31 ... Coil component 32, 33 ... Magnetic core 34 ... Slit 36 ... Magnetic thin film 41 ... Coil component 42 ... Magnetic substance 51 ... Coil component 52 ... Bobbin 53 ... Wire material 55 ... Wound coil part 71 ... Coil component 72, 73 ... Magnetic core
Claims (4)
性体コアと、 前記二つの磁性体コアの間に配設された、少なくとも絶
縁体とコイルにて構成したコイル部とを備え、 前記磁性体コアを構成している磁性体薄膜のうち少なく
とも隣接する二つの磁性体薄膜において、コイル部に近
い磁性体薄膜の方が磁性体薄膜内を通る磁力線の数を抑
えるための欠損部の形状が大きいこと、 を特徴とするコイル部品。1. A magnetic head comprising: two magnetic cores formed by laminating magnetic thin films; and a coil portion formed between at least an insulator and a coil, disposed between the two magnetic cores. In at least two adjacent magnetic thin films of the magnetic thin films forming the magnetic core, the magnetic thin film closer to the coil portion has a defective portion for suppressing the number of magnetic force lines passing through the magnetic thin film. A coil component characterized by its large shape.
性体コアと、 前記二つの磁性体コアの間に配設された、少なくとも絶
縁体とコイルにて構成したコイル部とを備え、 前記磁性体コアを構成している磁性体薄膜のうち少なく
とも隣接する二つの磁性体薄膜において、コイル部に近
い磁性体薄膜の方が磁性体薄膜内を通る磁力線の数を抑
えるための切欠けの形状が大きいこと、 を特徴とするコイル部品。2. A magnetic body, comprising: two magnetic cores formed by laminating magnetic thin films; and a coil portion disposed between the two magnetic cores and formed of at least an insulator and a coil. In at least two adjacent magnetic thin films of the magnetic thin films forming the magnetic core, the magnetic thin film closer to the coil portion has a notch for suppressing the number of magnetic force lines passing through the magnetic thin film. A coil component characterized by its large shape.
性体コアと、 前記二つの磁性体コアの間に配設された、少なくとも絶
縁体とコイルにて構成したコイル部とを備え、 前記磁性体コアを構成している磁性体薄膜のうち少なく
とも隣接する二つの磁性体薄膜において、コイル部に近
い磁性体薄膜の方が磁性体薄膜内を通る磁力線の数を抑
えるためのスリットの形状が大きいこと、 を特徴とするコイル部品。3. A magnetic body, comprising: two magnetic cores formed by laminating magnetic thin films; and a coil portion formed between at least an insulator and a coil, disposed between the two magnetic cores. In at least two adjacent magnetic thin films of the magnetic thin films forming the magnetic core, the shape of the slit for suppressing the number of magnetic force lines passing through the magnetic thin film closer to the coil portion Is a large coil component.
構成され、前記コイルが前記磁性体を周回していること
を特徴とする請求項１，２又は３記載のコイル部品。4. The coil component according to claim 1, wherein the coil portion is composed of an insulator, a coil and a magnetic material, and the coil surrounds the magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7788295A JPH08273934A (en) | 1995-04-03 | 1995-04-03 | Coil component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7788295A JPH08273934A (en) | 1995-04-03 | 1995-04-03 | Coil component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08273934A true JPH08273934A (en) | 1996-10-18 |
Family
ID=13646454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7788295A Pending JPH08273934A (en) | 1995-04-03 | 1995-04-03 | Coil component |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08273934A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6603382B1 (en) * | 1999-04-13 | 2003-08-05 | Alps Electric Co., Ltd. | Inductive element having improved superposed DC current characteristic |
| JP2007503716A (en) * | 2003-08-26 | 2007-02-22 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Ultra-thin flexible inductor |
-
1995
- 1995-04-03 JP JP7788295A patent/JPH08273934A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6603382B1 (en) * | 1999-04-13 | 2003-08-05 | Alps Electric Co., Ltd. | Inductive element having improved superposed DC current characteristic |
| JP2007503716A (en) * | 2003-08-26 | 2007-02-22 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Ultra-thin flexible inductor |
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