JPH0744005Y2 - Multilayer ceramic inductance element - Google Patents
Multilayer ceramic inductance elementInfo
- Publication number
- JPH0744005Y2 JPH0744005Y2 JP1991042762U JP4276291U JPH0744005Y2 JP H0744005 Y2 JPH0744005 Y2 JP H0744005Y2 JP 1991042762 U JP1991042762 U JP 1991042762U JP 4276291 U JP4276291 U JP 4276291U JP H0744005 Y2 JPH0744005 Y2 JP H0744005Y2
- Authority
- JP
- Japan
- Prior art keywords
- conductor pattern
- coil
- conductor patterns
- conductor
- inductance 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 - Lifetime
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Description
【考案の詳細な説明】[Detailed description of the device]
【０００１】[0001]
【産業上の利用分野】本考案は、積層セラミックインダ
クタンス素子の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved laminated ceramic inductance element.
【０００２】[0002]
【従来の技術】図２は従来の積層セラミックインダクタ
ンス素子の一例を示す外観図、図３の(a) ,(b)はその構
成を示す図である。図に示すように、積層セラミックイ
ンダクタンス素子の本体１は直方体形状をなし、その内
部には導体からなるコイル（図示せず）が形成され、こ
のコイルの両端はそれぞれ本体１の長手方向両端部に形
成された外部電極２，３に接続されている。2. Description of the Related Art FIG. 2 is an external view showing an example of a conventional monolithic ceramic inductance element, and FIGS. 3 (a) and 3 (b) are views showing the structure thereof. As shown in the figure, the main body 1 of the monolithic ceramic inductance element has a rectangular parallelepiped shape, inside which coils (not shown) made of conductors are formed, and both ends of the coil are at both longitudinal ends of the main body 1, respectively. It is connected to the formed external electrodes 2 and 3.
【０００３】即ち、本体１は、導体パタ−ン１１〜１６
が形成された矩形の複数の磁性材料シ−ト２１〜２６及
び導体パタ−ンが形成されていない矩形の磁性材料シ−
ト２７を積層して一体に形成される。That is, the main body 1 is made up of conductor patterns 11-16.
A plurality of rectangular magnetic material sheets 21 to 26 and rectangular magnetic material sheets having no conductor pattern formed.
27 are laminated to be integrally formed.
【０００４】導体パタ−ン１１〜１６のそれぞれは所定
の導体によって磁性材料シ−ト２１〜２６に形成され，
導体パタ−ン１２〜１５は磁性材料シ−ト２２〜２５の
所定の３辺にほぼ平行となるように略コ字形状に形成さ
れている。これらの導体パタ−ン１１〜１６はスパイラ
ル形状となるように、スル−ホ−ル１７を介して互いに
導電接続され、コイルが構成されている。また、このコ
イルの両端に対応する部分の導体パタ−ン、即ち導体パ
タ−ン１１の一端１１ａ及び導体パタ−ン１６の他端１
６ｂは、本体１の長手方向の端面に露出するように形成
され、本体１の一端に露出した導体パタ−ン１１は外部
電極２に、また他端に露出した導体パタ−ン１６は外部
電極３にそれぞれ導電接続されている。Each of the conductor patterns 11 to 16 is formed on the magnetic material sheets 21 to 26 by a predetermined conductor.
The conductor patterns 12 to 15 are formed in a substantially U shape so as to be substantially parallel to the predetermined three sides of the magnetic material sheets 22 to 25. These conductor patterns 11 to 16 are conductively connected to each other through a through hole 17 to form a coil so as to have a spiral shape. Further, the conductor pattern of the portion corresponding to both ends of this coil, that is, one end 11a of the conductor pattern 11 and the other end 1 of the conductor pattern 16
6b is formed so as to be exposed at the end face of the main body 1 in the longitudinal direction. The conductor pattern 11 exposed at one end of the main body 1 is the external electrode 2, and the conductor pattern 16 exposed at the other end is the external electrode. 3 are electrically connected to each other.
【０００５】[0005]
【考案が解決しようとする課題】しかしながら、前述し
た従来のインダクタンス素子においては、各導体パタ−
ン１２〜１５が略コ字形状に形成されているので、例え
ば前述したインダクタンス素子の一断面を見た場合、図
４に示すように上下の導体パタ−ン１２〜１６の間隔が
他のほぼ２倍となる間隙Ａが形成される。このため、こ
の間隙Ａから磁束がコイルの外部に漏洩して間隙Ａの上
下に磁束のル−プが生じ、インダクタンスが低下すると
いう問題点があった。However, in the above-mentioned conventional inductance element, each conductor pattern is used.
Since the coils 12 to 15 are formed in a substantially U shape, for example, when a cross section of the above-mentioned inductance element is seen, as shown in FIG. 4, the intervals between the upper and lower conductor patterns 12 to 16 are almost equal to each other. A doubled gap A is formed. Therefore, there is a problem in that the magnetic flux leaks from the gap A to the outside of the coil and a loop of the magnetic flux is generated above and below the gap A, and the inductance decreases.
【０００６】また、従来のインダクタンス素子では、導
体パタ−ンが形成された磁性材料シ−トの積層数を増や
して前記コイルの巻回数を増しているため、コイルの巻
回数の増加に伴い形状が大型化するという問題点があっ
た。Further, in the conventional inductance element, the number of windings of the coil is increased by increasing the number of laminated magnetic material sheets on which the conductor patterns are formed. However, there was a problem in that
【０００７】本考案の目的は上記の問題点に鑑み、コイ
ルの中間部における漏洩磁束を低減すると共に、磁性材
料シ−トの積層数を増やすことなくコイルの巻回数を増
した積層セラミックインダクタンス素子を提供すること
にある。In view of the above problems, the object of the present invention is to reduce the leakage magnetic flux in the middle portion of the coil and to increase the number of turns of the coil without increasing the number of laminations of the magnetic material sheet. To provide.
【０００８】[0008]
【課題を解決するための手段】本考案は上記の目的を達
成するために、略コ字形状の第１の導体パタ−ンが形成
された複数枚の磁性材料シ−トを積層し、前記導体パタ
−ンの両端の接続部を上下層間でスル−ホ−ルを介して
スパイラル状に導電接続してなるコイルを備えた積層セ
ラミックインダクタンス素子において、前記各磁性材料
シ−トに略コ字形状の第２の導体パタ−ンを設けると共
に、前記第１及び第２の導体パタ−ンを、それぞれの一
端の接続部が他方の導体パタ−ンの内側に位置し、かつ
前記第１及び第２の導体パタ−ンが略周回状をなすよう
に配置し、前記各磁性材料シ−トの第１及び第２の導体
パタ−ンを上下層に亙ってスパイラル状に導電接続して
前記コイルを形成した積層セラミックインダクタンス素
子を提案する。In order to achieve the above-mentioned object, the present invention laminates a plurality of magnetic material sheets on which a substantially U-shaped first conductor pattern is formed, In a multilayer ceramic inductance element having a coil in which connecting portions at both ends of a conductor pattern are electrically conductively connected in a spiral shape between upper and lower layers through a through hole, each of the magnetic material sheets has a substantially U-shape. The second conductor pattern having a shape is provided, and the first and second conductor patterns have the connecting portions at one end located inside the other conductor pattern, and the first and second conductor patterns are formed. The second conductor patterns are arranged so as to form a substantially circular shape, and the first and second conductor patterns of each of the magnetic material sheets are conductively connected in a spiral shape over the upper and lower layers. A monolithic ceramic inductance element formed with the coil is proposed.
【０００９】[0009]
【作用】本考案によれば、各磁性材料シ−トには第１及
び第２の導体パタ−ンが、それぞれの一端の接続部が他
方の導体パタ−ンの内側に位置し、かつ前記第１及び第
２の導体パタ−ンが略周回状をなすように配置され、前
記各磁性材料シ−トの第１及び第２の導体パタ−ンは上
下層に亙ってスパイラル状に導電接続されてコイルが形
成される。これにより、従来のもの、即ち第１の導体パ
タ−ンのみが形成された磁性材料シ−トを積層してコイ
ルを形成したものに比べて、同一層数において約２倍の
巻回数のコイルを形成することができる。さらに、前記
第１及び第２の導体パタ−ンの上下層間の間隔は全てに
亙ってほぼ同じになり、前記コイルの中間部における漏
洩磁束は従来のものよりも低減される。前記第１及び第
２の導体パタ−ンによって構成される磁気回路において
発生する磁束は、前記第１及び第２の導体パタ−ンによ
って形成されるコイルの巻数と該コイルを流れる電流値
によって決まり、該巻数及び電流値が一定の場合、前記
磁気回路において発生する磁束は一定となる。従って、
前記コイルの中間部における低減された分の漏洩磁束は
前記コイルの全てに亙って鎖交する鎖交磁束となり、前
記コイルの自己インダクタンスが増加する。According to the present invention, the first and second conductor patterns are provided in each magnetic material sheet, the connecting portion of one end of each is located inside the other conductor pattern, and The first and second conductor patterns are arranged in a substantially circular shape, and the first and second conductor patterns of each magnetic material sheet are spirally conductive over the upper and lower layers. Connected to form a coil. As a result, the number of turns in the same number of layers is about twice that of the conventional one, that is, the one in which only the first conductor pattern is formed and the magnetic material sheet is laminated to form the coil. Can be formed. Further, the distance between the upper and lower layers of the first and second conductor patterns is substantially the same throughout, and the leakage flux in the intermediate portion of the coil is reduced as compared with the conventional one. The magnetic flux generated in the magnetic circuit formed by the first and second conductor patterns is determined by the number of turns of the coil formed by the first and second conductor patterns and the current value flowing through the coil. When the number of turns and the current value are constant, the magnetic flux generated in the magnetic circuit is constant. Therefore,
The reduced leakage magnetic flux in the middle part of the coil becomes a linkage magnetic flux that links all over the coil, increasing the self-inductance of the coil.
【００１０】[0010]
【実施例】図１は本考案の一実施例の構成を示す図であ
る。図において、前述した従来例と同一構成部分は同一
符号をもって表す。本実施例の積層セラミックインダク
タンス素子（以下、インダクタンス素子と称する）の外
観は、図２に示す従来例と同様であり、その本体１は直
方体形状をなし、その長手方向の両端部には外部電極
２，３が形成されている。1 is a diagram showing the construction of an embodiment of the present invention. In the figure, the same components as those in the conventional example described above are represented by the same reference numerals. The appearance of the monolithic ceramic inductance element (hereinafter referred to as an inductance element) of the present embodiment is similar to that of the conventional example shown in FIG. 2, the main body 1 has a rectangular parallelepiped shape, and external electrodes are provided at both ends in the longitudinal direction. 2 and 3 are formed.
【００１１】また、本実施例と前述した従来例との相違
点は、従来例における磁性材料シ−ト２２〜２５に、略
コ字形状の導体パタ−ン１２〜１５に加えて、略コ字形
状の導体パタ−ン３２〜３５を形成したことにある。The difference between this embodiment and the above-mentioned conventional example is that in addition to the substantially U-shaped conductor patterns 12 to 15 in addition to the substantially U-shaped conductor patterns 22 to 25 in the conventional example. That is, the V-shaped conductor patterns 32 to 35 are formed.
【００１２】即ち、導体パタ−ン３２〜３５のそれぞれ
は、磁性材料シ−ト２２〜２５の所定の３辺にほぼ平行
となるように略コ字形状に形成され、これらの一端３２
ａ〜３５ａが導体パタ−ン１２〜１５の内側に、また他
端３２ｂ〜３５ｂが導体パタ−ン１２〜１５の外側に位
置すると共に、導体パタ−ン３２〜３５のそれぞれの挟
片が対応する導体パタ−ン１２〜１５の挟片にほぼ平行
になるように配置されている。さらに、各磁性材料シ−
ト２２〜２５において、導体パタ−ン１２〜１５，３２
〜３５は、これらが所定の略周回状となるように形成さ
れている。That is, each of the conductor patterns 32 to 35 is formed in a substantially U shape so as to be substantially parallel to the predetermined three sides of the magnetic material sheets 22 to 25, and one end 32 of these is formed.
a to 35a are located inside the conductor patterns 12 to 15 and the other ends 32b to 35b are located outside the conductor patterns 12 to 15, and the sandwiched pieces of the conductor patterns 32 to 35 correspond to each other. The conductor patterns 12 to 15 are arranged so as to be substantially parallel to each other. Furthermore, each magnetic material sheet
22 to 25, conductor patterns 12 to 15 and 32
Nos. 35 to 35 are formed such that they have a predetermined substantially circular shape.
【００１３】また、磁性材料シ−ト２１，２６に形成さ
れた導体パタ−ン１１，１６の端部、即ち導体パタ−ン
１１の一端１１ａ及び導体パタ−ン１６の他端１６ｂ
は、従来例と同様に本体１の長手方向の端面に露出する
ように形成され、本体１の一端に露出した導体パタ−ン
１１は外部電極２に、また他端に露出した導体パタ−ン
１６は外部電極３にそれぞれ導電接続されている。Further, the ends of the conductor patterns 11, 16 formed on the magnetic material sheets 21, 26, that is, one end 11a of the conductor pattern 11 and the other end 16b of the conductor pattern 16 are formed.
Is formed so as to be exposed on the end face in the longitudinal direction of the main body 1 as in the conventional example, and the conductor pattern 11 exposed at one end of the main body 1 is exposed at the external electrode 2 and at the other end. 16 are conductively connected to the external electrodes 3, respectively.
【００１４】これらの導体パタ−ン１１〜１６，３２〜
３５はスパイラル形状となるようにスル−ホ−ル１７を
介して互いに導電接続され、コイルが形成されている。
即ち、導体パタ−ン１１は導体パタ−ン１２の一端１２
ａに接続され、導体パタ−ン１２の他端１２ｂは導体パ
タ−ン１３の他端１３ｂに接続されている。導体パタ−
ン１３の一端１３ａは導体パタ−ン３２の一端３２ａ
に、また導体パタ−ン３２の他端３２ｂは導体パタ−ン
３３の他端３３ｂにそれぞれ接続されている。導体パタ
−ン３３の一端３３ａは導体パタ−ン３４の一端３４ａ
に接続され、導体パタ−ン３４の他端３４ｂは導体パタ
−ン３５の他端３５ｂに接続されている。さらに、導体
パタ−ン３５の一端３５ａは導体パタ−ン１４の一端１
４ａに、また導体パタ−ン１４の他端１４ｂは導体パタ
−ン１５の他端１５ｂに、さらに導体パタ−ン１５の一
端１５ａは導体パタ−ン１６の一端にそれぞれ接続され
ている。These conductor patterns 11 to 16 and 32 to
35 are conductively connected to each other through the through-hole 17 so as to have a spiral shape, and a coil is formed.
That is, the conductor pattern 11 is one end 12 of the conductor pattern 12.
The other end 12b of the conductor pattern 12 is connected to the other end 13b of the conductor pattern 13. Conductor pattern
One end 13 a of the conductor 13 is one end 32 a of the conductor pattern 32.
The other end 32b of the conductor pattern 32 is connected to the other end 33b of the conductor pattern 33. One end 33a of the conductor pattern 33 is one end 34a of the conductor pattern 34.
The other end 34b of the conductor pattern 34 is connected to the other end 35b of the conductor pattern 35. Further, one end 35 a of the conductor pattern 35 is connected to one end 1 a of the conductor pattern 14.
4a, the other end 14b of the conductor pattern 14 is connected to the other end 15b of the conductor pattern 15, and the one end 15a of the conductor pattern 15 is connected to one end of the conductor pattern 16.
【００１５】次に、本実施例の構成を、その製造手順と
共に詳述する。まず、Ｆｅ2 Ｏ3 、ＮｉＯ、ＺｎＯ、Ｃ
ｕＯを秤量し、水と共にボ−ルミルに投入して混合、分
散を行い、ボ−ルミルから取り出して乾燥した後、大気
中、８０℃で２時間加熱して仮焼する。その後再び水と
共にボ−ルミルに投入して１５時間解砕し、ボ−ルミル
から取り出し、乾燥してフェライト粉末を得る。このフ
ェライト粉末にポリブチラ−ルを主成分とする有機バイ
ンダ−と有機溶剤を加え、混練して粘度４２００ｃｐの
フェライトスラリ−を得る。Next, the structure of this embodiment will be described in detail together with its manufacturing procedure. First, Fe 2 O 3 , NiO, ZnO, C
uO is weighed, put into a ball mill together with water for mixing and dispersion, taken out from the ball mill and dried, and then heated in air at 80 ° C. for 2 hours for calcination. After that, it is again charged into a ball mill together with water, crushed for 15 hours, taken out from the ball mill and dried to obtain a ferrite powder. To this ferrite powder, an organic binder containing polybutyral as a main component and an organic solvent are added and kneaded to obtain a ferrite slurry having a viscosity of 4200 cp.
【００１６】一方、Ａｇ粉末、エチルセルロ−ル、α−
タ−ピネオ−ル、及びブチルカルビト−ルアセテ−トを
混練したＡｇペ−ストを用意する。On the other hand, Ag powder, ethyl cellulose, α-
An Ag paste prepared by kneading terpineol and butyl carbitol acetate is prepared.
【００１７】次に、ポリエチレンテレフタレ−トのベ−
スフィルムを水平に搬送し、このベ−スフィルムにドク
タ−ブレ−ド法によって前述したフェライトスラリ−を
塗布する。これを乾燥した後剥離して、１１０mm角の方
形に切断し、厚さ４０μｍのシ−トを形成し、このシ−
トを複数枚用意する。Next, a polyethylene terephthalate base
The base film is conveyed horizontally, and the ferrite slurry described above is applied to the base film by the doctor blade method. This was dried and then peeled off, and cut into a square of 110 mm square to form a sheet having a thickness of 40 μm.
Prepare multiple sheets.
【００１８】また、１００mm角の窓の周囲を１５mmの幅
で囲った額縁状のステンレス製フレ−ムを用意する。こ
のフレ−ムの隅には、印刷機等において位置決めを行う
小穴が設けられている。このフレ−ムに前記シ−トを張
り付け、シ−トの所定位置にスル−ホ−ル金型によって
スル−ホ−ルを打ち抜き、スル−ホ−ルを有するフェラ
イトグリ−ンシ−トを形成する。Further, a frame-shaped stainless frame having a 100 mm square window surrounded by a width of 15 mm is prepared. Small holes are provided at the corners of the frame for positioning in a printing machine or the like. The sheet was attached to this frame, and the through hole was punched out at a predetermined position of the sheet by a through hole die to form a ferrite green sheet having the through hole. To do.
【００１９】次いで、フェライトグリ−ンシ−トに印刷
機を用いて導体パタ−ン１１〜１６及び導体パタ−ン３
２〜３５を形成する。即ち、別に用意した印刷機の被印
刷物を配置するステ−ションには、前記フレ−ムを位置
決めする複数のピンが設けられている。このピンを前記
フレ−ムの小穴に挿入して印刷位置を決め、フェライト
グリ−ンシ−トに前記Ａｇペ−ストを用いて、前述した
形状の導体パタ−ン１１〜１６及び導体パタ−ン３２〜
３５をスクリ−ン印刷して形成する。このときフェライ
トグリ−ンシ−トには、対応する導体パタ−ン１１〜１
６，３２〜３５が縦横複数列のマトリックス状に形成さ
れる。Next, the conductor patterns 11 to 16 and the conductor pattern 3 are applied to the ferrite green sheet by using a printing machine.
2 to 35 are formed. That is, a plurality of pins for positioning the frame are provided on a station for separately arranging a printing material of a printing machine. This pin is inserted into the small hole of the frame to determine the printing position, and the Ag paste is used for the ferrite green sheet, and the conductor patterns 11 to 16 and the conductor patterns having the above-described shapes are used. 32-
35 is formed by screen printing. At this time, the corresponding conductor patterns 11 to 1 are attached to the ferrite green sheets.
6, 32 to 35 are formed in a matrix of vertical and horizontal rows.
【００２０】この後、図１に示す順序で各導体パタ−ン
１１〜１６，３２〜３５が上下に重なるように、各フェ
ライトグリ−ンシ−トを積層して圧着する。これによ
り、上下層の導体パタ−ン１１〜１６，３２〜３５は前
述したようにスル−ホ−ル１７を介して導電接続され、
コイルが形成される。Thereafter, the ferrite green sheets are laminated and pressure-bonded in the order shown in FIG. 1 so that the conductor patterns 11 to 16 and 32 to 35 are vertically stacked. As a result, the conductor patterns 11 to 16 and 32 to 35 in the upper and lower layers are conductively connected through the through hole 17 as described above.
A coil is formed.
【００２１】次いで、前述した直方体形状のチップ（3.
4mm ×1.7mm ）に裁断し、９００℃の温度で２時間焼成
する。さらに、導体パタ−ン１１，１６の端分１１ａ，
１６ｂに導通する外部電極２，３を形成する。これによ
り、約６タ−ン巻回されたコイルを有するインダクタン
ス素子が構成される。Then, the above-mentioned rectangular parallelepiped chip (3.
4 mm x 1.7 mm) and baked at 900 ° C for 2 hours. Furthermore, the end portions 11a of the conductor patterns 11 and 16 are
The external electrodes 2 and 3 that are electrically connected to 16b are formed. As a result, an inductance element having a coil wound by about 6 turns is formed.
【００２２】このように本実施例によれば、従来例の構
成に対して導体パタ−ン３２〜３５を付加し、導体パタ
−ン１１〜１６及び導体パタ−ン３２〜３５をスパイラ
ル形状に導電接続してコイルを形成したので、従来例と
同じ層数で約２倍の巻回数のコイルを構成することがで
きる。As described above, according to this embodiment, the conductor patterns 32 to 35 are added to the structure of the conventional example, and the conductor patterns 11 to 16 and the conductor patterns 32 to 35 are formed in a spiral shape. Since the coil is formed by conductive connection, it is possible to construct a coil having the same number of layers as the conventional example and having about twice the number of turns.
【００２３】また、図５に示すように、導体パタ−ン３
２〜３５を設けたことによって、上下層の導体パタ−ン
１１〜１６，３２〜３５間の間隔は全てに亙ってほぼ同
じになる。これにより、このコイルに例えば交流電流を
通電した際のコイルの中間部における漏洩磁束は、従来
例に比べて大幅に低減される。Further, as shown in FIG. 5, the conductor pattern 3
2 to 35, the intervals between the upper and lower conductor patterns 11 to 16 and 32 to 35 are substantially the same. As a result, the leakage magnetic flux in the intermediate portion of the coil when an alternating current is applied to this coil, for example, is significantly reduced compared to the conventional example.
【００２４】導体パタ−ン１１〜１６，３２〜３５によ
って構成される磁気回路を考えた場合、この磁気回路に
おいて発生する磁束は、導体パタ−ン１１〜１６，３２
〜３５によって形成されるコイルの巻数とこのコイルを
流れる電流値によって決まり、これらの巻数及び電流値
が一定の場合、前記磁気回路において発生する磁束は一
定となることは公知のことである。従って、低減された
分の漏洩磁束は、前記コイルの全てに亙って鎖交する鎖
交磁束となり、全体の鎖交磁束が増加する。Considering a magnetic circuit composed of the conductor patterns 11 to 16 and 32 to 35, the magnetic flux generated in this magnetic circuit is the conductor patterns 11 to 16 and 32.
It is well known that the number of turns of the coil formed by ˜35 and the value of the current flowing through this coil determine the magnetic flux generated in the magnetic circuit when the number of turns and the current value are constant. Therefore, the reduced leakage flux becomes an interlinkage flux interlinking all of the coils, and the overall interlinkage flux increases.
【００２５】ここで、本実施例におけるコイルを１タ−
ンの小コイルが順接続されたものと考えると、前記コイ
ルの自己インダクタンスは各小コイルの自己インダクタ
ンスと、各小コイル間の相互インダクタンスとの和にな
ることも公知のことである。この２つの小コイル間の一
方の相互インダクタンスは、その一方の小コイルにおい
ては、他方の小コイルを流れる電流によって発生された
磁束の内、この一方の小コイルに鎖交する磁束に比例し
たものとなるので、前述した全体の鎖交磁束の増加に伴
い、各小コイル間の相互インダクタンスが増加する。こ
れにより、各小コイルを順接続したコイルの自己インダ
クタンスが増加する。Here, the coil in this embodiment is replaced by one coil.
It is also known that the self-inductance of the small coils is the sum of the self-inductance of each small coil and the mutual inductance between the small coils, assuming that the small coils of the small coils are connected in sequence. The mutual inductance of one of the two small coils is proportional to the magnetic flux linked to the one small coil among the magnetic fluxes generated by the current flowing through the other small coil in the one small coil. Therefore, the mutual inductance between the small coils increases with the increase in the overall flux linkage. This increases the self-inductance of the coil in which each small coil is connected in sequence.
【００２６】従って、前述した導体パタ−ン３２〜３５
を設けることにより、従来のものに比べて、外観形状を
同じにして，漏洩磁束を低減することができると共にコ
イルの巻回数を増すことができるので、大幅なインダク
タンスの増加を図ることができ、小型で大きなインダク
タンスの積層セラミックインダクタンス素子を得ること
ができる。Therefore, the conductor patterns 32 to 35 described above are used.
By providing the above, it is possible to reduce the magnetic flux leakage and increase the number of windings of the coil by making the external appearance the same as compared with the conventional one, and thus it is possible to significantly increase the inductance, It is possible to obtain a multilayer ceramic inductance element that is small and has a large inductance.
【００２７】[0027]
【考案の効果】以上説明したように本考案によれば、従
来のものに比べてコイルの中間部における漏洩磁束が低
減されると共に、前記コイルの巻回数を増すことができ
るので、前記コイルのインダクタンスが大幅に増加す
る。これにより、従来と同じ外観形状でより大きなイン
ダクタンスを有する積層セラミックインダクタンス素子
を構成することができるという非常に優れた効果を奏す
るものである。As described above, according to the present invention, the magnetic flux leakage in the intermediate portion of the coil can be reduced and the number of turns of the coil can be increased as compared with the conventional one. The inductance increases significantly. As a result, it is possible to construct a monolithic ceramic inductance element having the same external shape as the conventional one and a larger inductance, which is a very excellent effect.
【図１】 本考案の一実施例の構成を示す図FIG. 1 is a diagram showing the configuration of an embodiment of the present invention.
【図２】 従来の積層セラミックインダクタンス素子の
一例を示す外観図FIG. 2 is an external view showing an example of a conventional monolithic ceramic inductance element.
【図３】 従来例の構成を示す図FIG. 3 is a diagram showing a configuration of a conventional example.
【図４】 従来例の問題点を説明する図FIG. 4 is a diagram illustrating a problem of a conventional example.
【図５】 本考案の一実施例の動作を説明する図FIG. 5 is a diagram for explaining the operation of an embodiment of the present invention.
１…本体、２，３…外部電極、１１〜１６，３２〜３５
…導体パタ−ン、１７…スル−ホ−ル、２１〜２６…磁
性材料シ−ト。1 ... Main body, 2, 3 ... External electrode, 11-16, 32-35
... conductor pattern, 17 ... through-hole, 21-26 ... magnetic material sheet.
Claims (1)
された複数枚の磁性材料シ−トを積層し、前記第１の導
体パタ−ンの両端の接続部を上下層間でスル−ホ−ルを
介してスパイラル状に導電接続してなるコイルを備えた
積層セラミックインダクタンス素子において、前記各磁
性材料シ−トに略コ字形状の第２の導体パタ−ンを設け
ると共に、前記第１及び第２の導体パタ−ンを、それぞ
れの一端の接続部が他方の導体パタ−ンの内側に位置
し、かつ該第１及び第２の導体パタ−ンが略周回状をな
すように配置し、前記各磁性材料シ−トの第１及び第２
の導体パタ−ンを上下層に亙ってスパイラル状に導電接
続して前記コイルを形成した、ことを特徴とする積層セ
ラミックインダクタンス素子。1. A plurality of magnetic material sheets on which a substantially U-shaped first conductor pattern is formed are laminated, and a connecting portion at both ends of the first conductor pattern is formed between upper and lower layers. In a monolithic ceramic inductance element including a coil electrically connected in a spiral shape through a through hole, each magnetic material sheet is provided with a substantially U-shaped second conductor pattern, and The first and second conductor patterns have a connecting portion at one end located inside the other conductor pattern, and the first and second conductor patterns have a substantially circular shape. Are arranged so that the first and second magnetic material sheets are
2. A multilayer ceramic inductance element, characterized in that the conductor pattern is electrically connected in a spiral shape over the upper and lower layers to form the coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991042762U JPH0744005Y2 (en) | 1991-06-07 | 1991-06-07 | Multilayer ceramic inductance element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991042762U JPH0744005Y2 (en) | 1991-06-07 | 1991-06-07 | Multilayer ceramic inductance element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04134808U JPH04134808U (en) | 1992-12-15 |
| JPH0744005Y2 true JPH0744005Y2 (en) | 1995-10-09 |
Family
ID=31923206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991042762U Expired - Lifetime JPH0744005Y2 (en) | 1991-06-07 | 1991-06-07 | Multilayer ceramic inductance element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744005Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765893B (en) * | 2007-07-30 | 2012-10-10 | 株式会社村田制作所 | Chip-type coil component |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60190451A (en) * | 1984-03-12 | 1985-09-27 | Mitsubishi Rayon Co Ltd | Polyester resin composition |
-
1991
- 1991-06-07 JP JP1991042762U patent/JPH0744005Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04134808U (en) | 1992-12-15 |
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