JPH04134808U - Multilayer ceramic inductance element - Google Patents
Multilayer ceramic inductance elementInfo
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- JPH04134808U JPH04134808U JP4276291U JP4276291U JPH04134808U JP H04134808 U JPH04134808 U JP H04134808U JP 4276291 U JP4276291 U JP 4276291U JP 4276291 U JP4276291 U JP 4276291U JP H04134808 U JPH04134808 U JP H04134808U
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- 239000004020 conductor Substances 0.000 claims abstract description 81
- 239000000696 magnetic material Substances 0.000 claims abstract description 23
- 230000004907 flux Effects 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
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- OVKDFILSBMEKLT-UHFFFAOYSA-N alpha-Terpineol Natural products CC(=C)C1(O)CCC(C)=CC1 OVKDFILSBMEKLT-UHFFFAOYSA-N 0.000 description 1
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- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
(57)【要約】
【目的】 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。
【構成】 磁性材料シ−ト22〜25にそれぞれ２つの略コ
字形状の導体パタ−ン12〜15，32〜35を、略周回状とな
るように組合わせて形成する。さらに、これらの磁性材
料シ−ト22〜25と、外部電極との接続用の導体パタ−ン
11,16 が形成された磁性材料シ−ト21,26 とを積層し、
導体パタ−ン11〜16，32〜35をスパイラル形状となるよ
うにスル−ホ−ル１７を介して導電接続してコイルを形
成する。
【効果】 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。
(57) [Summary] [Purpose] To provide a multilayer ceramic inductance element that reduces leakage magnetic flux in the intermediate portion of the coil and increases the number of turns of the coil without increasing the number of laminated magnetic material sheets. [Structure] Two substantially U-shaped conductor patterns 12 to 15 and 32 to 35 are formed on magnetic material sheets 22 to 25, respectively, so as to form a substantially circumferential combination. Furthermore, conductor patterns for connecting these magnetic material sheets 22 to 25 and external electrodes are provided.
11, 16 are formed on the magnetic material sheets 21, 26,
The conductor patterns 11 to 16 and 32 to 35 are electrically connected via the through hole 17 so as to form a spiral shape to form a coil. [Effect] A multilayer ceramic inductance element having the same external shape as the conventional one but having a larger inductance can be constructed.
Description
【０００１】0001
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。 The present invention relates to an improvement of a multilayer ceramic inductance element.
【０００２】0002
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。 Figure 2 is an external view showing an example of a conventional multilayer ceramic inductance element; (a) and (b) are diagrams showing the configuration. As shown in the figure, the laminated ceramic inductor The main body 1 of the tans element has a rectangular parallelepiped shape, and inside it there is a coil made of a conductor (Fig. ) is formed, and both ends of this coil are shaped at both longitudinal ends of the main body 1, respectively. The external electrodes 2 and 3 are connected to each other.
【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２ ７を積層して一体に形成される。0003 That is, the main body 1 includes a plurality of rectangular magnetic materials on which conductor patterns 11 to 16 are formed. Sheets 21 to 26 and a rectangular magnetic material sheet 2 on which no conductor pattern is formed. 7 are laminated and 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１６ｂ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。0004 Each of the conductor patterns 11 to 16 is connected to the magnetic material sheet 21 by a predetermined conductor. ~26, and the conductor patterns 12~15 are formed in predetermined areas of the magnetic material sheets 22~25. It is formed into a substantially U-shape so as to be substantially parallel to the three sides of. These conductor patterns - The rings 11 to 16 are connected to each other via the through hole 17 so as to form a spiral shape. is electrically conductively connected to form a coil. Also, corresponds to both ends of this coil. The conductor pattern of the part, that is, one end 11a of the conductor pattern 11 and the conductor pattern 16 The other end 16b is formed so as to be exposed on the longitudinal end surface of the main body 1, and The conductor pattern 11 exposed at one end is connected to the external electrode 2, and the conductor pattern 11 exposed at the other end is connected to the external electrode 2. -n 16 are electrically conductively connected to the external electrodes 3, respectively.
【０００５】[0005]
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 conventional inductance element described above, each conductor pattern Since the inductors 12 to 15 are formed in a substantially U-shape, for example, the above-mentioned inductor When looking at a cross section of the element, as shown in FIG. 4, the upper and lower conductor patterns 12 to 16 A gap A is formed in which the gap is approximately twice the other gap. Therefore, the magnetic flux from this gap A leaks to the outside of the coil, creating a loop of magnetic flux above and below gap A, increasing the inductance. There was a problem in that the value decreased.
【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。[0006] Furthermore, in conventional inductance elements, a magnetic material film on which a conductive pattern is formed is used. -The number of turns of the coil is increased by increasing the number of laminated layers. There was a problem in that the shape became larger as the number increased.
【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。[0007] In view of the above problems, the purpose of this invention is to reduce leakage magnetic flux in the middle part of the coil. At the same time, the number of turns of the coil can be increased without increasing the number of layers of magnetic material sheets. An object of the present invention is to provide a multilayer ceramic inductance element.
【０００８】[0008]
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 object, the present invention has a first conductor pattern having a substantially U-shape. A plurality of sheets of magnetic material thus prepared are laminated, and the connecting portions at both ends of the conductive pattern are connected. Equipped with a coil that is conductively connected in a spiral manner through a through hole between the upper and lower layers. In the multilayer ceramic inductance element, each of the magnetic material sheets has a substantially U-shape. A second conductor pattern having a shape of , the connection portion at one end of each is located inside the other conductor pattern, and the first and a second conductor pattern arranged in a substantially circular shape, and each magnetic material sheet The first and second conductor patterns are electrically connected in a spiral manner across the upper and lower layers. We propose a multilayer ceramic inductance element in which a coil is formed.
【０００９】[0009]
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, each magnetic material sheet has first and second conductor patterns. The connecting portion at one end of each is located inside the other conductive pattern, and The two conductor patterns are arranged so as to form a substantially circular pattern, and the second conductor pattern The first and second conductor patterns are conductively connected in a spiral manner across the upper and lower layers to form a coil. is formed. As a result, only the conventional pattern, that is, only the first conductor pattern is formed. Compared to a coil formed by laminating sheets of magnetic material, the number of layers is the same. It is possible to form a coil with approximately twice the number of turns. Furthermore, the first and the first The spacing between the upper and lower layers of the second conductor pattern is almost the same throughout, and the coil The leakage magnetic flux in the middle part of the magnetic flux is reduced compared to the conventional one. said first and second The magnetic flux generated in the magnetic circuit constituted by the conductor pattern is and the number of turns of the coil formed by the second conductor pattern and the current flowing through the coil. occurs in the magnetic circuit when the number of turns and current value are constant. The magnetic flux is constant. Therefore, the reduced leakage in the middle part of the coil The leakage magnetic flux becomes an interlinkage magnetic flux that interlinks throughout all of the coils, and the self-linkage of the coils becomes Inductance increases.
【００１０】0010
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。 FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. In the figure, the conventional example mentioned above Components that are the same as the above are indicated by the same reference numerals. Multilayer ceramic inductor of this example The appearance of the inductance element (hereinafter referred to as inductance element) is the same as the conventional example shown in Figure 2. The main body 1 has a rectangular parallelepiped shape, and external electrical terminals are provided at both longitudinal ends. Poles 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。[0011] The difference between this embodiment and the conventional example described above is that the magnetic material sheet in the conventional example is In addition to the approximately U-shaped conductor patterns 12 to 15, approximately U-shaped conductor patterns 12 to 25 are provided. This is because conductor patterns 32 to 35 have been 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３２ａ〜 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１２〜１ ５，３２〜３５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。0012 That is, each of the conductive patterns 32 to 35 is located at a position on the magnetic material sheets 22 to 25. It is formed into a substantially U-shape so as to be substantially parallel to three sides, and one end 32a to 32a of these 35a is inside the conductor patterns 12-15, and the other end 32b-35b is inside the conductor pattern. - located outside the conductor patterns 12 to 15, and each of the conductor patterns 32 to 35. The pincers are arranged so as to be substantially parallel to the pincers of the corresponding conductor patterns 12 to 15. ing. Furthermore, in each magnetic material sheet 22-25, conductive patterns 12-1 5, 32 to 35 are formed in 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。[0013] Furthermore, the ends of the conductor patterns 11 and 16 formed on the magnetic material sheets 21 and 26 That is, one end 11a of the conductor pattern 11 and the other end 16b of the conductor pattern 16 are Like the previous example, it is formed so as to be exposed on the end surface in the longitudinal direction of the main body 1, and one end of the main body 1 The conductor pattern 11 exposed at the end is connected to the external electrode 2, and the conductor pattern 11 exposed at the other end is connected to the external electrode 2. 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１２ａ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３ ２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１４ａ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。[0014] These conductor patterns 11-16, 32-35 are arranged in a spiral shape. They are electrically connected to each other via a through hole 17 to form a coil. That is, , the conductor pattern 11 is connected to one end 12a of the conductor pattern 12, and the conductor pattern 11 is connected to one end 12a of the conductor pattern 12. The other end 12b of 12 is connected to the other end 13b of the conductor pattern 13. conductor pattern - one end 13a of the conductor pattern 32 is connected to one end 32a of the conductor pattern 32; The other ends 32b of 2 are connected to the other ends 33b of the conductor pattern 33, respectively. Guidance One end 33a of the body pattern 33 is connected to one end 34a of the conductor pattern 34, and the conductor The other end 34b of the pattern 34 is connected to the other end 35b of the conductive pattern 35. Further, one end 35a of the conductive pattern 35 is connected to one end 14a of the conductive pattern 14, or The other end 14b of the conductor pattern 14 is further connected to the other end 15b of the conductor pattern 15. One end 15a of the body pattern 15 is connected to one end of the conductor pattern 16, respectively. Ru.
【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、ＣｕＯ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、８ ０℃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 configuration of this embodiment will be explained in detail together with its manufacturing procedure. First, Fe 2 O 3 , NiO, ZnO, and CuO were weighed, put into a ball mill with water, mixed and dispersed, taken out from the ball mill, dried, and then heated in the air at 80°C for 2 hours. Heat and calcinate. Thereafter, it is put into a ball mill together with water again and crushed for 15 hours, taken out from the ball mill, and dried to obtain ferrite powder. An organic binder containing polybutyral as a main component and an organic solvent are added to this ferrite powder 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。[0016] On the other hand, Ag powder, ethyl cellulose, α-terpineol, and butyl carbyl Ag paste mixed with tall 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。[0017] Next, the base film of polyethylene terephthalate is conveyed horizontally, and this base film is - Apply the above-mentioned ferrite slurry to the base film using the doctor blade method. do. After drying, peel it off, cut it into 110 mm squares, and cut it into 40 μm thick squares. A sheet is formed and a plurality of sheets are prepared.
【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。[0018] In addition, a frame-like stainless steel frame with a width of 15 mm surrounds the 100 mm square window. - Prepare a sample. There are small holes in the corners of this frame for positioning in printing machines, etc. is provided. Attach the sheet to this frame and place it in the specified position. A through-hole is punched out using a through-hole mold, and a ferrite with a through-hole is made. Form a light green sheet.
【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３２〜３５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１ １〜１６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１１〜１６，３２〜３５ が縦横複数列のマトリックス状に形成される。[0019] Next, conductor patterns 11 to 16 are printed on the ferrite green sheet using a printing machine. and conductor patterns 32 to 35 are formed. In other words, the printing material of a separately prepared printing machine The station where the frame is placed is provided with a plurality of pins for positioning the frame. It is. Insert this pin into the small hole in the frame to determine the printing position, and Using the above-mentioned Ag paste on a green sheet, a conductor pattern 1 having the above-mentioned shape is formed. 1 to 16 and conductor patterns 32 to 35 are formed by screen printing. At this time The ferrite green sheet has corresponding conductor patterns 11-16, 32-35. are formed in a matrix with multiple rows and columns.
【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。[0020] After this, each conductor pattern 11-16, 32-35 is stacked vertically in the order shown in Figure 1. The ferrite green sheets are stacked and crimped so that This allows the top The lower layer conductor patterns 11 to 16, 32 to 35 have through holes 17 as described above. A conductive connection is made through the coil to form a coil.
【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，１６ ｂ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。[0021] Next, the chips were cut into the aforementioned rectangular parallelepiped chips (3.4 mm x 1.7 mm) and heated at 900°C. Bake at a temperature of 2 hours. Furthermore, the end portions 11a, 16 of the conductor patterns 11, 16 Form external electrodes 2 and 3 electrically connected to b. This allows the coil to be wound around 6 turns. An inductance element having a coil is constructed.
【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。[0022] In this way, according to this embodiment, the conductor patterns 32 to 35 are different from the conventional structure. and conductor patterns 11 to 16 and conductor patterns 32 to 35 in a spiral shape. Since the coil is formed by conductive connection in the form of A coil can be configured.
【００２３】 また、図５に示すように、導体パタ−ン３２〜３５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。[0023] Moreover, as shown in FIG. 5, by providing conductor patterns 32 to 35, the upper The spacing between the lower layer conductor patterns 11 to 16 and 32 to 35 is almost the same throughout. Become. As a result, when an alternating current is applied to this coil, for example, the middle part of the coil The leakage magnetic flux in 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１１〜１６，３２〜３ ５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。[0024] When considering a magnetic circuit composed of conductor patterns 11 to 16 and 32 to 35, In this case, the magnetic flux generated in this magnetic circuit flows through the conductor patterns 11-16, 32-3. It is determined by the number of turns of the coil formed by 5 and the value of the current flowing through this coil. , when the number of turns and current value are constant, the magnetic flux generated in the magnetic circuit is It is well known that it is constant. Therefore, the reduced leakage magnetic flux is The flux linkage becomes interlinked throughout the entire coil, and the overall flux linkage 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。[0025] Here, the coil in this example is assumed to be one turn of small coils connected in sequence. Considering, the self-inductance of the above coil is the self-inductance of each small coil It is also known that it is the sum of the mutual inductance between the small coils and the mutual inductance between the small coils. One mutual inductance between these two small coils is In this case, the magnetic flux generated by the current flowing through the other small coil is Since it is proportional to the magnetic flux linking to the small coil, the total magnetic flux linkage mentioned above is With the increase, the mutual inductance between each small coil increases. This allows each small The self-inductance of the coils increases when the coils are 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。[0026] Therefore, by providing the conductor patterns 32 to 35 described above, it is possible to In comparison, the external shape is the same, leakage magnetic flux can be reduced, and the coil Since the number of turns can be increased, it is possible to significantly increase the inductance. It is possible to obtain a small multilayer ceramic inductance element with large inductance. I can do that.
【００２７】[0027]
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 explained above, according to the present invention, the middle part of the coil is This reduces leakage magnetic flux and increases the number of turns of the coil. , the inductance of the coil increases significantly. This allows for the same appearance as before. Multilayer ceramic inductance element with larger inductance in shape It has a very excellent effect of being able to be configured.
【図１】 本考案の一実施例の構成を示す図[Figure 1] 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[Figure 2] External view showing an example of a conventional multilayer ceramic inductance element
【図３】 従来例の構成を示す図[Figure 3] Diagram showing the configuration of a conventional example
【図４】 従来例の問題点を説明する図[Figure 4] Diagram explaining the problems of the conventional example
【図５】 本考案の一実施例の動作を説明する図[Figure 5] Diagram explaining the operation of one 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 each having a substantially U-shaped first conductor pattern formed thereon are laminated, and the connecting portions at both ends of the first conductor pattern are connected between the upper and lower layers. In a multilayer ceramic inductance element having a coil conductively connected in a spiral manner through a through hole, each of the magnetic material sheets is provided with a second conductive pattern having a substantially U-shape, The first and second conductor patterns are arranged such that a connecting portion at one end of each is located inside the other conductor pattern, and the first and second conductor patterns form a substantially circular shape. The first and second magnetic material sheets are arranged as follows.
1. A multilayer ceramic inductance element, characterized in that the coil is formed by electrically connecting conductor patterns in an upper and lower layer in a spiral manner.
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 true JPH04134808U (en) | 1992-12-15 |
| JPH0744005Y2 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009016937A1 (en) * | 2007-07-30 | 2009-02-05 | Murata Manufacturing Co., Ltd. | Chip-type coil component |
Citations (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
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60190451A (en) * | 1984-03-12 | 1985-09-27 | Mitsubishi Rayon Co Ltd | Polyester resin composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009016937A1 (en) * | 2007-07-30 | 2009-02-05 | Murata Manufacturing Co., Ltd. | Chip-type coil component |
| US9019058B2 (en) | 2007-07-30 | 2015-04-28 | Murata Manufacturing Co., Ltd. | Chip-type coil component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0744005Y2 (en) | 1995-10-09 |
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