JP2826929B2 - Chip inductor - Google Patents
Chip inductorInfo
- Publication number
- JP2826929B2 JP2826929B2 JP4347093A JP34709392A JP2826929B2 JP 2826929 B2 JP2826929 B2 JP 2826929B2 JP 4347093 A JP4347093 A JP 4347093A JP 34709392 A JP34709392 A JP 34709392A JP 2826929 B2 JP2826929 B2 JP 2826929B2
- Authority
- JP
- Japan
- Prior art keywords
- inductor
- magnetic core
- lead
- plate
- lead wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Coils Or Transformers For Communication (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回路基板に実装するチ
ップ状インダクタに関し、更に詳細には、アキシャルリ
ード形インダクタのリード線に接合する板状電極リード
の形成に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip-shaped inductor mounted on a circuit board, and more particularly to the formation of a plate-shaped electrode lead bonded to a lead wire of an axial lead type inductor.
【０００２】[0002]
【従来の技術】従来、図５に示すように、ドラム形磁性
コアａに巻線ｂを巻装し、その端末ｃを前記磁性コアａ
の両端面に軸方向に延設したリード線ｄの基端部にから
げて半田付けしたアキシャルリード形インダクタｅを、
その一対のリード線ｄを一対の板状電極リードｆの端縁
に形成した凹部ｇに挿入して板状電極リードｆに載置
し、半田付け等によりリード線ｄと板状電極リードｆと
を接合し、次いで余分のリード線ｄを切断した後、イン
ダクタｅ及び板状電極リードｆの一部を絶縁外装体ｈで
被覆し、板状電極リードｆの露出した端部を電極ｉとし
たチップ状インダクタが知られている（実開昭６３−１
９１６１２号公報参照）。2. Description of the Related Art Conventionally, as shown in FIG. 5, a winding b is wound around a drum-shaped magnetic core a, and a terminal c thereof is connected to the magnetic core a.
An axial lead type inductor e soldered to the base end of a lead wire d extending in the axial direction on both end surfaces of
The pair of lead wires d is inserted into the concave portion g formed at the edge of the pair of plate electrode leads f, placed on the plate electrode leads f, and connected to the lead wires d and the plate electrode leads f by soldering or the like. Then, after cutting an extra lead wire d, the inductor e and a part of the plate-shaped electrode lead f are covered with an insulating sheath h, and the exposed end of the plate-shaped electrode lead f is used as an electrode i. A chip-shaped inductor is known.
No. 91612).
【０００３】[0003]
【発明が解決しようとする課題】インダクタはＱ値の大
きいものが望まれるが、上述した従来のチップ状インダ
クタは、巻線ｂにより発生する磁束の多くが板状電極リ
ードｆに鎖交するため、Ｑ値が著しく影響を受け易いと
いう問題があった。It is desired that the inductor has a large Q value. However, in the above-described conventional chip-shaped inductor, most of the magnetic flux generated by the winding b is linked to the plate-shaped electrode lead f. , There is a problem that the Q value is remarkably affected.
【０００４】本発明は、上記した従来のチップ状インダ
クタの改良に係り、従来のものよりＱ値の高いチップ状
インダクタを提供することをその目的とするものであ
る。An object of the present invention is to provide a chip inductor having a higher Q value than that of the conventional chip inductor, which is related to the improvement of the conventional chip inductor described above.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、磁性コアの端面からその軸方向にリー
ド線を延設し、該磁性コアに巻装した巻線の端末を該リ
ード線の基端部に接続してなるアキシャルリード形イン
ダクタを用い、そのリード線を板状電極リードの上方端
縁部に形成した切欠凹部に嵌合し、リード線と板状電極
リードとを導電性接合剤で接合してなるチップ状インダ
クタにおいて、前記板状電極リードは、その両側縁が磁
性コアの端面の外周縁部より内側になるような幅を有
し、前記切欠凹部の底部より下の部分が磁性コアの端面
から遠ざかる方向に傾斜する形状を有することを特徴と
する。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a magnetic core having a lead wire extending in an axial direction from an end face thereof, and a terminal of a winding wound around the magnetic core. Using an axial lead type inductor connected to the base end of the lead wire, the lead wire is fitted into a cutout recess formed at the upper edge of the plate electrode lead, and the lead wire and the plate electrode lead are connected to each other. In a chip-shaped inductor formed by bonding the two electrodes with a conductive bonding agent, both side edges of the plate-shaped electrode lead are magnetic.
Width that is inside the outer peripheral edge of the end face of the conductive core.
The part below the bottom of the notch recess is the end face of the magnetic core.
Characterized by having a shape that is inclined in a direction away from the object.
【０００６】[0006]
【作用】アキシャルリード形インダクタの巻線により発
生する磁束は、磁性コアの端面ではその外周縁部で最も
多い。The magnetic flux generated by the winding of the axial lead type inductor is the largest at the outer peripheral edge of the end face of the magnetic core.
【０００７】本発明では、板状電極リードを、その両側
縁が磁性コアの端面の外周縁部より内側になるような幅
を有する形状にしたので、磁性コアの端面の外周縁部か
ら放射される磁束のうち、板状電極リードと鎖交する磁
束が減少する。従って、このように板状電極リードの幅
寸法を狭くすることによりＱ値の低下を減少することが
できる。In the present invention, the plate-like electrode leads are placed on both sides thereof.
Width so that the edge is inside the outer peripheral edge of the end face of the magnetic core
With the outer peripheral edge of the end face of the magnetic core.
Of the magnetic flux radiated from the
Bundles decrease. Therefore, the width of the plate electrode lead
It is possible to reduce the decrease of Q value by reducing the size.
I can .
【０００８】本発明では更に、切欠凹部の底部より下の
部分が磁性コアの端面から遠ざかる方向に傾斜する形状
にしたので、該底部より下の部分では切欠凹部から離れ
るに従って鎖交する磁束が漸次減少し、板状電極リード
によるＱ値の低下が更に少なくなる。[0008] In the present invention, furthermore, the lower portion of the notch concave portion may be provided .
The shape where the part is inclined in the direction away from the end face of the magnetic core
So that the part below the bottom is separated from the notch
Accordingly, the magnetic flux interlinking gradually decreases, and the decrease in the Q value due to the plate-like electrode leads further decreases.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面につき説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１は、チップ状インダクタの一例を示
す。[0010] Figure 1 shows an example of a switch-up type inductor.
【００１１】同図において、１はアキシャルリード形イ
ンダクタ本体で、インダクタ本体１は、ドラム形磁性コ
ア２に巻線３が巻装され、その端末４はドラム形磁性コ
ア２の両端面から軸方向に延設された断面円形のリード
線５の基端部にからげられて半田付けされ、該リード線
５には板状電極リード７が半田付けにより接合されて構
成されており、例えば樹脂等の絶縁材でモールドにより
形成された絶縁外装体６で覆われ、前記リード線５に接
合された板状電極リード７は、その一部が絶縁外装体６
から露出し、その下面に沿って屈曲された端部が電極８
になっている。In FIG. 1, reference numeral 1 denotes an axial lead type inductor main body. In the inductor main body 1, a winding 3 is wound around a drum type magnetic core 2, and its terminals 4 are arranged in the axial direction from both end surfaces of the drum type magnetic core 2. The base wire of the lead wire 5 having a circular cross section is extended and soldered, and a plate-shaped electrode lead 7 is joined to the lead wire 5 by soldering. A part of the plate-like electrode lead 7 covered with the insulating sheath 6 formed by molding with the insulating material and joined to the lead wire 5 is partially covered with the insulating sheath 6.
From the electrode 8 and the end bent along the lower surface
It has become.
【００１２】前記板状電極リード７は、図２に示すよう
に、上方端縁部９の中央に切欠凹部１０を有し、その底
部には切込１１が形成され、前記磁性コア２の両側縁が
鎖線で示すように切除されて磁性コア２の端面の外周縁
部１２より内側になるような幅を有し、切欠凹部１０の
下方部分が鎖線で示す従来のものより切欠凹部１０の近
くで直角方向に屈曲され、切欠凹部１０の底部より下の
部分である脚部１４が磁性コア２の端面の外周縁部１２
よりほぼ内側になるように形成されている。図１及び図
２において、１３は切欠凹部１０の周縁に、絞り加工に
より、リード線５の延設方向に突出する突出部であり、
この突出部１３により、リード線５と板状電極リード７
との接合強度及び電気的接続性が向上する。[0012] The plate-shaped electrode lead 7, as shown in FIG. 2, has a cutout recess 10 in the center of the upper edge portion 9, the the bottom cut 11 is formed, both of the magnetic cores 2 The side edge is cut off as shown by the dashed line and has a width such that it is inside the outer peripheral edge 12 of the end face of the magnetic core 2, and the lower part of the notch recess 10 Near the bottom of the cutout recess 10
The leg 14 is a part of the outer peripheral edge 12 of the end face of the magnetic core 2.
It is formed so as to be substantially inside. 1 and 2, reference numeral 13 denotes a protruding portion that protrudes in the direction in which the lead wire 5 extends in the peripheral edge of the cutout recess 10 by drawing.
The projecting portion 13 allows the lead wire 5 and the plate-like electrode lead 7 to be formed.
Bonding strength and electrical connectivity are improved.
【００１３】尚、この突出部１３は形成しなくてもよ
い。Note that the projection 13 need not be formed.
【００１４】図３は、本発明によるチップ状インダクタ
の一例を示す。FIG. 3 shows an example of a chip inductor according to the present invention .
【００１５】板状電極リード７の両側縁は、図２に示す
ように切除されていないが、磁性コア２の端面の外周縁
部１２より内側になるような幅Ｗ1を有する。切欠凹部
１０の脚部１４は磁性コア２の端面から離れる方向に直
線状に傾斜して磁性コア２の下端と略同じ高さまで延び
ており、そこから屈曲されて水平方向に延びている。The side edges of the plate-shaped electrode lead 7 is not cut as shown in FIG. 2, has a width W 1 such that the outer peripheral edge 12 yo Ri in side end surface of the magnetic core 2. The leg portion 14 of the cutout recess 10 is linearly inclined away from the end face of the magnetic core 2 and extends to substantially the same height as the lower end of the magnetic core 2, from which it is bent and extends in the horizontal direction.
【００１６】この実施例においても、図１に示すよう
に、絶縁外装体で被覆してチップ状インダクタを構成す
る。Also in this embodiment, as shown in FIG. 1, a chip inductor is formed by covering with an insulating sheath.
【００１７】図４は本発明によるチップ状インダクタの
他の例を示す。FIG. 4 shows another example of a chip inductor according to the present invention .
【００１８】この実施例では、板状電極リード７の両側
縁は、図２に示すように切除されているので、図３のイ
ンダクタに比べて鎖交する磁束は少なくなりＱ値は高
い。切欠凹部１０の脚部１４は磁性コア２の端面から離
れる方向に曲線状に傾斜して磁性コア２の下端と略同じ
高さまで延びており、そこから屈曲されて水平方向に延
びている。In this embodiment, both sides of the plate-like electrode lead 7 are
Edge, because it is excised as shown in FIG. 2, magnetic flux interlinking less of Ri Q value in comparison with the inductor of FIG. 3 is high. The leg 14 of the notch 10 is curved in the direction away from the end face of the magnetic core 2 and is substantially the same as the lower end of the magnetic core 2.
It extends to a height, from which it is bent and extends horizontally.
【００１９】この実施例においても図１に示すように、
絶縁外装体で被覆してチップ状インダクタを構成する。In this embodiment, as shown in FIG.
The chip inductor is formed by covering with an insulating sheath.
【００２０】[0020]
【発明の効果】本発明は、上述のように構成されている
ので、従来のチップ状インダクタに比べてＱ値が向上す
る効果を有する。Since the present invention is configured as described above, it has an effect of improving the Q value as compared with the conventional chip-shaped inductor.
【図１】 チップ状インダクタの一例の一部截断正面図[1] a portion of an example of a switch-up type inductor cutting off front view
【図２】 （Ａ）（Ｂ）及び（Ｃ）は製造工程における
上記一例の平面図、正面図及び側面図Figure 2 (A) (B) and (C) the plan view of an example of the more manufacturing processes, a front view and a side view
【図３】 （Ａ）及び（Ｂ）は製造工程における本発明
のチップ状インダクタの一例の正面図及び側面図3 (A) and (B) is an example front view and a side view of a chip type inductor of the present invention <br/> in more manufacturing processes
【図４】 （Ａ）及び（Ｂ）は製造工程における本発明
のチップ状インダクタの他の例の正面図及び側面図[4] (A) and (B) is a front view and a side view of another example of a chip type inductor of the present invention <br/> in more manufacturing processes
【図５】 従来のチップ状インダクタの一部の斜視図FIG. 5 is a perspective view of a part of a conventional chip inductor.
１ アキシャルリード形インダクタ ２ ドラム形磁性
コア ３ 巻線 ４ 端末 ５ リード線 ７ 板状電極リー
ド ８ 電極 ９ 上方端縁部 １０ 切欠凹部 １１ 切込 １２ 磁性コア２の外周縁部 １４ 脚部 DESCRIPTION OF SYMBOLS 1 Axial lead type inductor 2 Drum type magnetic core 3 Winding 4 Terminal 5 Lead wire 7 Plate electrode lead 8 Electrode 9 Upper edge 10 Notch recess 11 Notch 12 Outer edge of magnetic core 2 14 Leg
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01F 27/28 H01F 27/29 H01F 27/06 H01F 5/04 H01F 41/04Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) H01F 27/28 H01F 27/29 H01F 27/06 H01F 5/04 H01F 41/04
Claims (1)
線を延設し、該磁性コアに巻装した巻線の端末を該リー
ド線の基端部に接続してなるアキシャルリード形インダ
クタを用い、そのリード線を板状電極リードの上方端縁
部に形成した切欠凹部に嵌合し、リード線と板状電極リ
ードとを導電性接合剤で接合してなるチップ状インダク
タにおいて、前記板状電極リードは、その両側縁が磁性
コアの端面の外周縁部より内側になるような幅を有し、
前記切欠凹部の底部より下の部分が磁性コアの端面から
遠ざかる方向に傾斜する形状を有することを特徴とする
チップ状インダクタ。1. An axial lead type inductor having a lead wire extending from an end face of a magnetic core in an axial direction thereof, and a terminal of a winding wound on the magnetic core connected to a base end of the lead wire. A chip inductor formed by fitting the lead wire into a notch recess formed at the upper edge of the plate-shaped electrode lead and joining the lead wire and the plate-shaped electrode lead with a conductive bonding agent. -Shaped electrode leads are magnetic on both sides
Having a width that is inside the outer peripheral edge of the end face of the core,
The portion below the bottom of the notch recess is from the end face of the magnetic core.
A chip-shaped inductor having a shape inclined in a direction away from the chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4347093A JP2826929B2 (en) | 1992-12-25 | 1992-12-25 | Chip inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4347093A JP2826929B2 (en) | 1992-12-25 | 1992-12-25 | Chip inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06196327A JPH06196327A (en) | 1994-07-15 |
| JP2826929B2 true JP2826929B2 (en) | 1998-11-18 |
Family
ID=18387865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4347093A Expired - Fee Related JP2826929B2 (en) | 1992-12-25 | 1992-12-25 | Chip inductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2826929B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59144108A (en) * | 1983-02-07 | 1984-08-18 | Matsushita Electric Ind Co Ltd | Fixed inductor |
| JPS60156715U (en) * | 1984-03-27 | 1985-10-18 | 太陽誘電株式会社 | chip inductor |
| JPH0620013B2 (en) * | 1988-08-12 | 1994-03-16 | コーア株式会社 | Chip inductor |
-
1992
- 1992-12-25 JP JP4347093A patent/JP2826929B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06196327A (en) | 1994-07-15 |
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