JPH11265827A - Coil part - Google Patents
Coil partInfo
- Publication number
- JPH11265827A JPH11265827A JP10089276A JP8927698A JPH11265827A JP H11265827 A JPH11265827 A JP H11265827A JP 10089276 A JP10089276 A JP 10089276A JP 8927698 A JP8927698 A JP 8927698A JP H11265827 A JPH11265827 A JP H11265827A
- Authority
- JP
- Japan
- Prior art keywords
- flange
- coil component
- drum core
- winding
- coil
- 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.)
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- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子回路に用いる
コイル部品に関し、特に、回路基板に面実装して好適な
チョークコイル等の面実装型の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 used in an electronic circuit, and more particularly to a surface-mount type coil component such as a choke coil which is suitable for being surface-mounted on a circuit board.
【０００２】[0002]
【従来の技術】近年、電子機器等には、多くの場合、電
子回路が用いられ、これに伴い、電子回路の回路基板に
搭載される電子部品のうち、比較的大きい容積を占める
コイル部品（チョークコイル等）も数多く用いられてい
る。2. Description of the Related Art In recent years, electronic circuits are often used in electronic devices and the like, and accordingly, among electronic components mounted on a circuit board of an electronic circuit, a coil component (which occupies a relatively large volume). Choke coils, etc.) are also widely used.
【０００３】例えば、チョークコイルは、ノイズフィル
タとして主に電子機器の電源装置において、スイッチン
グ回路に発生するノイズを除去する目的で用いられ、平
滑用チョークコイルとしては、リップル電圧を抑制する
ために整流回路に使用される。また、通信線路や電子回
路においても、電子回路に搭載し、帯域阻止フィルタ
等、いろいろな目的で用いられている。For example, a choke coil is used as a noise filter mainly in a power supply device of an electronic device for the purpose of removing noise generated in a switching circuit. As a smoothing choke coil, a rectifier for suppressing a ripple voltage is used. Used for circuits. Also, in communication lines and electronic circuits, they are mounted on electronic circuits and used for various purposes such as band rejection filters.
【０００４】図４に、従来のチョークコイルを示す。図
４（ａ）は、従来のチョークコイルの外観斜視図、図４
（ｂ）は、従来のチョークコイルの断面図［図４（ａ）
ＢーＢ］である。FIG. 4 shows a conventional choke coil. FIG. 4A is an external perspective view of a conventional choke coil, and FIG.
FIG. 4B is a cross-sectional view of a conventional choke coil [FIG.
BB].
【０００５】図４に示すように、従来のチョークコイル
は、磁性体よりなるドラムコア２０に巻線５を施し、導
電材料よりなるリード端子２１を備えた絶縁材料よりな
る台座２２に、ドラムコア２０の一方の鍔を接着固定
し、リード端子２１に巻線５の端部を巻き付けてから半
田等で電気的に接続して構成したものが多く使用されて
いる。As shown in FIG. 4, a conventional choke coil has a structure in which a winding 5 is applied to a drum core 20 made of a magnetic material, and a drum core 20 is mounted on a pedestal 22 made of an insulating material having lead terminals 21 made of a conductive material. There is often used one in which one flange is bonded and fixed, and the end of the winding 5 is wound around the lead terminal 21 and then electrically connected with solder or the like.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記し
たように、ドラムコアを、リード端子を備えた台座に、
接着固定した構造のコイル部品（チョークコイル）に
は、以下に示すような問題点があった。However, as described above, the drum core is mounted on the pedestal having the lead terminals.
The coil component (choke coil) having the structure fixed by adhesion has the following problems.
【０００７】（１）台座の厚さがコイル部品全体の高さ
に占める比率が、高くなり、コイル部品の薄型化の障害
になっている。 （２）ドラムコアを台座に接着固定する場合に、突き合
わせ接着のため、位置決めがし難く、製造に手間取る。 （３）リード端子を備えた台座は、インサート成形によ
り得られるため、成形コストが高く、コイル部品の原価
低減に支障を来している。(1) The ratio of the thickness of the pedestal to the entire height of the coil component is increased, which is an obstacle to thinning the coil component. (2) When the drum core is bonded and fixed to the pedestal, positioning is difficult due to butt bonding, and it takes time to manufacture. (3) Since the pedestal provided with the lead terminals is obtained by insert molding, the molding cost is high, which hinders the cost reduction of the coil component.
【０００８】そこで、本発明の課題は、薄型で、製造し
やすく、コストの低い面実装型のコイル部品を提供する
ことである。It is an object of the present invention to provide a surface-mounted coil component which is thin, easy to manufacture, and low in cost.
【０００９】[0009]
【課題を解決するための手段】本発明は、磁性体よりな
るドラムコアに巻線を施してなるコイル部品であって、
前記ドラムコアの両鍔に、外部接続部を有し、一方の鍔
上の外部接続部と、他方の鍔上の外部接続部とが電気的
接続を有することを特徴とするコイル部品である。SUMMARY OF THE INVENTION The present invention relates to a coil component formed by winding a drum core made of a magnetic material,
An external connection portion is provided on both flanges of the drum core, and the external connection portion on one flange and the external connection portion on the other flange have an electrical connection.
【００１０】また、本発明は、前記ドラムコアがコイル
巻軸部内部に、両鍔に直角に設けた複数の貫通孔を有
し、前記貫通孔にそれぞれ導電体が設置され、前記導電
体は前記両鍔上の外部接続部に電気的接続を有すること
を特徴とする上記のコイル部品である。Further, according to the present invention, the drum core has a plurality of through-holes provided at right angles to both flanges inside the coil winding shaft portion, and a conductor is provided in each of the through-holes. The coil component as described above, wherein the external connection portion on both flanges has an electrical connection.
【００１１】また、本発明は、前記導電体の一端部と、
コイル巻線の端部とが電気的に接続されてなることを特
徴とする上記のコイル部品である。[0011] Further, the present invention provides a method for manufacturing a semiconductor device, comprising:
The above-mentioned coil component is characterized in that an end of the coil winding is electrically connected.
【００１２】従来通りに台座を使用し、同形状のドラム
コアの巻軸部の長さのみを短くして低背化を試みた場合
は、巻線の断面積を小さくしなければならず、所望の巻
数が得られなくなり、従って、所望のインダクタンスが
得られなくなる。When the pedestal is used as in the prior art, and only the length of the winding shaft of the drum core having the same shape is shortened to reduce the height, the cross-sectional area of the winding must be reduced. And the desired inductance cannot be obtained.
【００１３】本発明のコイル部品は、台座を使用せず、
ドラムコアの鍔が外部接続部を有し、ドラムコアを直
接、前記外部接続部を介して電子回路の回路基板に搭載
（実装）する。The coil component of the present invention does not use a pedestal,
The flange of the drum core has an external connection portion, and the drum core is directly mounted (mounted) on a circuit board of an electronic circuit via the external connection portion.
【００１４】このようにしたコイル部品は、低背化はさ
れるが、二つの鍔が同形状であるために、一つの鍔のみ
が外部接続部を有する場合には、外部接続部を有する鍔
と、外部接続部を持たない鍔とを、機械によって自動的
に認識し、判別するのは難しい。Although the height of the coil component is reduced, the two flanges have the same shape. Therefore, when only one flange has an external connection, the flange having the external connection is provided. It is difficult for a machine to automatically recognize and discriminate a flange having no external connection.
【００１５】また、実装時に、自動的に外部接続部を有
する鍔を判別できても、５０％の確率で、コイル部品の
向きを反転させなければならない。In addition, even when the collar having the external connection portion can be automatically determined at the time of mounting, the orientation of the coil component must be reversed with a probability of 50%.
【００１６】そこで、本発明のコイル部品は、ドラムコ
アのどちらの鍔ででも回路基板に実装できるように、両
鍔に外部接続部を有している。Therefore, the coil component of the present invention has external connection portions on both flanges so that the flange can be mounted on the circuit board with either flange of the drum core.
【００１７】[0017]
【発明の実施の形態】以下に、本発明の実施の形態を説
明する。Embodiments of the present invention will be described below.
【００１８】図１に、本発明のコイル部品を示す。図１
（ａ）は本発明のコイル部品の外観斜視図、図１（ｂ）
は、本発明のコイル部品の断面図［図１（ａ）、Ａ−
Ａ］、図１（ｃ）は、本発明に関わるドラムコアの外観
斜視（部分）図である。FIG. 1 shows a coil component according to the present invention. FIG.
FIG. 1A is an external perspective view of a coil component of the present invention, and FIG.
Is a sectional view of the coil component of the present invention [FIG.
A], and FIG. 1C is an external perspective (partial) view of a drum core according to the present invention.
【００１９】図１に示すように、本実施の形態のドラム
コア１０は、巻軸部１２の内部に鍔１１に直角に設けた
２つの貫通孔１を有する。また、鍔１１には、溝３を設
ける。溝３は貫通孔１につながるとともに、鍔１１の外
周（側面）に至り、さらに、鍔１１の外周の全幅に至る
［図１（ｃ）］。As shown in FIG. 1, a drum core 10 according to the present embodiment has two through holes 1 provided at right angles to a flange 11 inside a winding shaft portion 12. The flange 3 is provided with the groove 3. The groove 3 is connected to the through hole 1, reaches the outer periphery (side surface) of the flange 11, and further reaches the entire width of the outer periphery of the flange 11 (FIG. 1C).
【００２０】そして、貫通孔１に、それぞれ導電体であ
るリード端子４を挿入（設置）し、貫通孔１より露出し
たリード端子４の両端部は、鍔１１に設けた溝３に入れ
て鍔１１の外周方向に折り曲げ、さらに鍔１１の側面に
折り曲げる。リード端子４の一端部４１は、鍔１１の側
面に折り曲げたリード端子が、鍔の（側面の）幅よりも
長くなるようにする。また、リード端子４の他端は、鍔
１１の側面に折り曲げても、鍔の表面で止めても良い
が、リード端子４が鍔の側面からでないようにする［図
１（ｂ）］。Then, lead terminals 4 each of which is a conductor are inserted (installed) into the through-hole 1, and both ends of the lead terminal 4 exposed from the through-hole 1 are inserted into the grooves 3 provided in the flange 11 to form the flange. 11 is bent in the outer peripheral direction, and further bent to the side surface of the flange 11. One end 41 of the lead terminal 4 is configured such that the lead terminal bent to the side surface of the flange 11 is longer than the width (of the side surface) of the flange. In addition, the other end of the lead terminal 4 may be bent to the side surface of the flange 11 or may be stopped at the surface of the flange, but the lead terminal 4 should not be located from the side surface of the flange [FIG. 1 (b)].
【００２１】そして、ドラムコアの巻軸部１２に捲回さ
れた巻線５の端部５１を、リード端子４の一端部４１に
電気的に接続する［図１（ｂ）］。Then, the end portion 51 of the winding 5 wound around the winding shaft portion 12 of the drum core is electrically connected to the one end portion 41 of the lead terminal 4 (FIG. 1B).
【００２２】さらに、両鍔１１の表面に、リード端子４
の露出部を含めて、予備半田を施し、外部接続部７とす
る［図１（ａ）、片側のみ図示］。Further, the lead terminals 4
Preliminary soldering is performed including the exposed portion of FIG. 1 to form an external connection portion 7 (FIG. 1A, only one side is shown).
【００２３】上記のようにして、本発明の、磁性体のド
ラムコアに巻線を施して、ドラムコアの両鍔に外部接続
部とを有し、一方の鍔上の外部接続部と、他方の鍔上の
外部接続部とが電気的接続を有するコイル部品が得られ
る。As described above, the winding of the magnetic drum core according to the present invention is performed, and the outer connection portion is provided on both flanges of the drum core. A coil component having an electrical connection with the upper external connection portion is obtained.
【００２４】[0024]
【実施例】以下に、本発明の実施例を説明する。Embodiments of the present invention will be described below.
【００２５】本実施例に用いるドラムコアは、主成分を
Ｆe2Ｏ3：４８ｍｏｌ％、ＮｉＯ：１５ｍｏｌ％、Ｃｕ
Ｏ：６ｍｏｌ％、ＺｎＯ：３１ｍｏｌ％にして、従来、
公知の方法によって得たが、貫通孔１および溝３［図１
（ｃ）］は、焼成前の圧粉体に切削加工して得た。The drum core used in this embodiment is mainly composed of Fe 2 O 3 : 48 mol%, NiO: 15 mol%, Cu
O: 6 mol%, ZnO: 31 mol%, conventionally,
Although obtained by a known method, the through hole 1 and the groove 3 [FIG.
(C)] was obtained by cutting a green compact before firing.
【００２６】ドラムコアの寸法は、鍔１１の直径７ｍ
ｍ、鍔１１の幅１ｍｍ、巻軸部１２の直径３ｍｍ、コア
高さ４ｍｍであり、貫通孔１の直径φ０.６ｍｍ、溝３
の深さおよび幅は０.６ｍｍである［図１（ｃ）］。The size of the drum core is 7 m in diameter of the flange 11.
m, the width of the flange 11 is 1 mm, the diameter of the winding shaft 12 is 3 mm, the core height is 4 mm, the diameter of the through hole 1 is φ0.6 mm, and the groove 3 is
Has a depth and width of 0.6 mm [FIG. 1 (c)].
【００２７】リード端子４には、線径φ０.５ｍｍの燐
青銅線を用い、巻線５には、呼び径φ０.３ｍｍの絶縁
被覆銅線を用い、その巻数は４７ターンである。また、
巻線５の端部５１は、絶縁被覆を半田ディップにより除
去し、リード端子４の一端部４１にからげてから、半田
を施し、電気的に接続した［図１（ｂ）］。A phosphor bronze wire having a wire diameter of 0.5 mm is used for the lead terminal 4, and an insulated copper wire having a nominal diameter of 0.3 mm is used for the winding 5. The number of turns is 47 turns. Also,
The end portion 51 of the winding 5 was stripped of the insulating coating by solder dip, wrapped around the one end portion 41 of the lead terminal 4, then soldered, and electrically connected [FIG. 1 (b)].
【００２８】そして、最大幅２ｍｍ、長さ２ｍｍの半田
面よりなる外部接続部７を両鍔で４箇所に設け、本実施
例のコイル部品（チョークコイル）を得た［図１
（ａ）］。その高さは４.０５ｍｍであった。Then, external connection portions 7 each having a solder surface having a maximum width of 2 mm and a length of 2 mm were provided at four places with both flanges, and a coil component (choke coil) of this embodiment was obtained [FIG.
(A)]. Its height was 4.05 mm.
【００２９】[0029]
【比較例】比較例に用いたチョークコイルは、実施例に
用いたドラムコアと同じ材質で、同寸法の鍔と巻軸部を
有するドラムコア２０に、実施例と同じ巻線５を施し、
台座２２に固定し、巻線５の端部をリード端子２１に電
気的に接続したもので、その高さは、６.５ｍｍであっ
た（図４）。[Comparative Example] The choke coil used in the comparative example is the same material as the drum core used in the example, and the same winding 5 as in the example is applied to a drum core 20 having a flange and a winding shaft portion of the same dimensions.
It was fixed to the pedestal 22, and the end of the winding 5 was electrically connected to the lead terminal 21, and the height was 6.5 mm (FIG. 4).
【００３０】上記のようにして得た本実施例のチョーク
コイルと、比較例のチョークコイルのインダクタンス
（Ｌ−ｆ特性）、直流重畳特性を測定した。その結果を
図２、図３に示す。The inductance (Lf characteristic) and the DC bias characteristic of the choke coil of the present example obtained as described above and the choke coil of the comparative example were measured. The results are shown in FIGS.
【００３１】図２及び図３に示すように、本実施例のコ
イル部品（チョークコイル）と、比較例のコイル部品
（チョークコイル）のＬ−ｆ特性及び直流重畳特性は、
ほとんど変わらず、貫通孔と溝による電気的特性への影
響は無視できる程度であった。そして、その高さは２ｍ
ｍ以上低くなり、コイル部品の薄型化が実現できた。As shown in FIGS. 2 and 3, the L-f characteristic and the DC superposition characteristic of the coil component (choke coil) of the present embodiment and the coil component (choke coil) of the comparative example are as follows.
There was almost no change, and the effect of the through holes and grooves on the electrical characteristics was negligible. And its height is 2m
m or more, and the coil component can be made thinner.
【００３２】本実施例において、貫通孔および溝は、焼
成前の圧粉体を切削加工して得たが、前記圧粉体を圧縮
成形するときに、プレス成形によって得ても、本発明の
効果に変わりはない。In this embodiment, the through-holes and the grooves are obtained by cutting the green compact before firing, but may be obtained by press molding when the green compact is compression-molded. The effect remains the same.
【００３３】[0033]
【発明の効果】本発明によれば、薄型で、製造しやす
く、コストの低い面実装型のコイル部品が得られる。According to the present invention, a thin, easy-to-manufacture and low-cost surface mount type coil component can be obtained.
【図１】本発明のコイル部品を示す図で、図１（ａ）は
本発明のコイル部品の外観斜視図、図１（ｂ）は、本発
明のコイル部品の断面図［図１（ａ）、Ａ−Ａ］、図１
（ｃ）は、本発明に関わるドラムコアの外観斜視（部
分）図。FIG. 1 is a view showing a coil component of the present invention, FIG. 1 (a) is an external perspective view of the coil component of the present invention, and FIG. 1 (b) is a cross-sectional view of the coil component of the present invention [FIG. ), AA], FIG.
(C) is an external perspective (partial) view of the drum core according to the present invention.
【図２】本発明のコイル部品（チョークコイル）のイン
ダクタンスを示す（Ｌ−ｆ特性）図。FIG. 2 is a graph (Lf characteristic) showing the inductance of the coil component (choke coil) of the present invention.
【図３】本発明のコイル部品（チョークコイル）の直流
重畳特性を示す図。FIG. 3 is a diagram showing a DC superposition characteristic of a coil component (choke coil) of the present invention.
【図４】従来のチョークコイルを示す図で、図４（ａ）
は、従来のチョークコイルの外観斜視図、図４（ｂ）
は、従来のチョークコイルの断面図［図４（ａ）Ｂー
Ｂ］。FIG. 4 is a view showing a conventional choke coil, and FIG.
Is an external perspective view of a conventional choke coil, FIG.
Is a sectional view of a conventional choke coil [FIG. 4 (a) BB].
１ 貫通孔 ３ 溝 ４ リード端子 ５ 巻線 ７ 外部接続部 １０ ドラムコア １１ （ドラムコアの）鍔 １２ （ドラムコアの）巻軸部 ２０ （従来の）ドラムコア ２１ （台座に設けた）リード端子 ２２ 台座 ４１ （リード端子の）一端部 ５１ （巻線の）端部 DESCRIPTION OF SYMBOLS 1 Through-hole 3 Groove 4 Lead terminal 5 Winding 7 External connection part 10 Drum core 11 (Drum core) collar 12 (Drum core) winding shaft part 20 (Conventional) drum core 21 (On pedestal) Lead terminal 22 Pedestal 41 ( One end of lead terminal 51 The end of (winding)
Claims (3)
てなるコイル部品であって、前記ドラムコアの両鍔に、
外部接続部を有し、一方の鍔上の外部接続部と、他方の
鍔上の外部接続部とが電気的接続を有することを特徴と
するコイル部品。A coil component formed by winding a drum core made of a magnetic material, wherein both flanges of the drum core have
A coil component having an external connection portion, wherein the external connection portion on one flange and the external connection portion on the other flange have an electrical connection.
に直角に設けた複数の貫通孔を有し、前記貫通孔に、そ
れぞれ導電体が設置され、前記導電体は前記両鍔上の外
部接続部に電気的接続を有することを特徴とする請求項
１記載のコイル部品。2. The drum core has a plurality of through-holes provided at right angles to both flanges inside a winding shaft portion, and a conductor is installed in each of the through-holes. 2. The coil component according to claim 1, wherein the external connection portion has an electrical connection.
電気的に接続されてなることを特徴とする請求項２記載
のコイル部品。3. The coil component according to claim 2, wherein one end of the conductor and an end of the winding are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10089276A JPH11265827A (en) | 1998-03-17 | 1998-03-17 | Coil part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10089276A JPH11265827A (en) | 1998-03-17 | 1998-03-17 | Coil part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11265827A true JPH11265827A (en) | 1999-09-28 |
Family
ID=13966216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10089276A Pending JPH11265827A (en) | 1998-03-17 | 1998-03-17 | Coil part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11265827A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007184618A (en) * | 2006-01-06 | 2007-07-19 | Biosense Webster Inc | Small-size coil on core having printed circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58166713A (en) * | 1982-03-29 | 1983-10-01 | Toko Inc | Manufacture of fixed inductance |
| JPH07192924A (en) * | 1993-12-27 | 1995-07-28 | Fuji Elelctrochem Co Ltd | Ferrite core for coil |
| JPH09260156A (en) * | 1996-03-22 | 1997-10-03 | Fuji Elelctrochem Co Ltd | Winding component with lead pins |
| JPH1022167A (en) * | 1996-06-28 | 1998-01-23 | Murata Mfg Co Ltd | Porcelain capacitor and its manufacturing method |
| JPH1041155A (en) * | 1996-07-22 | 1998-02-13 | Mitsumi Electric Co Ltd | Fixed coil |
-
1998
- 1998-03-17 JP JP10089276A patent/JPH11265827A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58166713A (en) * | 1982-03-29 | 1983-10-01 | Toko Inc | Manufacture of fixed inductance |
| JPH07192924A (en) * | 1993-12-27 | 1995-07-28 | Fuji Elelctrochem Co Ltd | Ferrite core for coil |
| JPH09260156A (en) * | 1996-03-22 | 1997-10-03 | Fuji Elelctrochem Co Ltd | Winding component with lead pins |
| JPH1022167A (en) * | 1996-06-28 | 1998-01-23 | Murata Mfg Co Ltd | Porcelain capacitor and its manufacturing method |
| JPH1041155A (en) * | 1996-07-22 | 1998-02-13 | Mitsumi Electric Co Ltd | Fixed coil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007184618A (en) * | 2006-01-06 | 2007-07-19 | Biosense Webster Inc | Small-size coil on core having printed circuit |
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| Date | Code | Title | Description |
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| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040910 |
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| A131 | Notification of reasons for refusal |
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