JPH02138710A - Compact coil - Google Patents
Compact coilInfo
- Publication number
- JPH02138710A JPH02138710A JP29274788A JP29274788A JPH02138710A JP H02138710 A JPH02138710 A JP H02138710A JP 29274788 A JP29274788 A JP 29274788A JP 29274788 A JP29274788 A JP 29274788A JP H02138710 A JPH02138710 A JP H02138710A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- coil
- lead
- drum
- shaped core
- 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.)
- Granted
Links
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 5
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 8
- 229910001004 magnetic alloy Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、各種電子機器に使用される小型コイルに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a small coil used in various electronic devices.
従来の技術
従来、この種の小型コイルで、例えば実開昭５６−２６
９２０号公報に記載されたものは、第４図ａｚｃに示し
たように構成されている。Conventional technology Conventionally, this type of small coil was used, for example, in
The device described in Japanese Patent No. 920 is constructed as shown in FIG. 4 azc.
すなわち、ドラム型コア１１にコイル１２を巻回し、外
周端面の一部に外方に向けて切り起し部１４を有する腕
曲状磁性合金材１３をドラム型コア１１の周側面の互い
に対向する位置に密着固定し、この対向する磁性合金材
１３のギャップ部１５よりコイルリード１２２Ｌ、１２
ｂを引出し磁性合金材側端面部１６にコイルリード１２
１Ｌ 、 １２ｂをハンダ付は等により接続固定し、ギ
ャップ部１５より接着剤等で磁性合金材１３を固着した
構成となっている。That is, the coil 12 is wound around the drum-shaped core 11, and the arm-shaped magnetic alloy material 13 having an outwardly cut and raised portion 14 on a part of the outer peripheral end surface is arranged so as to face each other on the peripheral surface of the drum-shaped core 11. The coil leads 122L, 12 are tightly fixed in position, and the coil leads 122L, 12 are
b, and attach the coil lead 12 to the magnetic alloy material side end surface 16.
1L and 12b are connected and fixed by soldering or the like, and a magnetic alloy material 13 is fixed from the gap 15 with adhesive or the like.
又、第５図＆−６に示した小型コイルは、両端にツバを
有するドラム型コア１８の一方のツバに２本の平行な端
子溝１８ａ、１８ｂを設け、この端子溝１８ａ・１８ｂ
に端子１アを嵌め込んで接着剤等で固定する。このドラ
ム型コア１８にコイル１９を巻装し、両端のコイルリー
ド１９＆・１９ｂをそれぞれ端子１７に巻付は配線して
ノ・ンダ付けされた構成となっている。In addition, the small coil shown in FIGS. 5 and 6 has two parallel terminal grooves 18a and 18b provided in one rib of a drum-shaped core 18 having flanges at both ends.
Insert terminal 1A into the connector and secure with adhesive, etc. A coil 19 is wound around this drum-shaped core 18, and the coil leads 19 and 19b at both ends are wound and wired around the terminal 17, respectively, and soldered.
発明が解決しようとする課題
このように構成された第４図の従来例では、ドラム型コ
ア１１にコイル１２を巻装し、外周端面に外方に向けて
切り起し部１４を有する椀曲状磁性合金材１３をドラム
型コア１１の周側面の互いに対向する位置に密着固定し
、この対向する磁性合金材１３のギャップ部１６よりコ
イルリード１２２Ｌ、１２ｂを引出し磁性合金材側端面
部１６にコイルリード１２ａ 、 １２ｂをハンダ付は
等により接続固定し、電気回路を構成している略閉磁路
構造のため、第６図のようにドラム型コア１１のソバ周
側面と磁性合金材１３の内側面のギャップ４により第７
図に示すように電気的性能のインダクタンスの変化が大
きく、インダクタンス公差として３０％〜４０％必要と
なる。このようなインダクタンス公差では信号回路定数
部品として、バラツキが大きく使用不可となる。このイ
ンダクタンスのバラツキを小さくする方法として、磁性
合金材１３を取り除くことにより開磁路構造となりイン
ダクタンスのバラツキも小さく、インダクタンス公差も
５％〜１０％程度が可能となり信号回路定数部品として
使用可能となるが、磁性合金材１３を取り除くことによ
りコイルリード１２ａ。Problems to be Solved by the Invention In the conventional example shown in FIG. 4 constructed in this way, a drum-shaped core 11 is wound with a coil 12, and a bowl-shaped core having an outwardly cut-out portion 14 on the outer peripheral end surface is formed. The shaped magnetic alloy material 13 is tightly fixed at positions facing each other on the circumferential side of the drum-shaped core 11, and the coil leads 122L and 12b are pulled out from the gap portion 16 of the opposing magnetic alloy material 13 and attached to the magnetic alloy material side end surface 16. The coil leads 12a and 12b are connected and fixed by soldering or the like to form an electric circuit, which has a substantially closed magnetic circuit structure, so that as shown in FIG. 7th due to side gap 4
As shown in the figure, the change in inductance in electrical performance is large, and an inductance tolerance of 30% to 40% is required. With such an inductance tolerance, the inductance cannot be used as a signal circuit constant component due to large variations. As a method to reduce this variation in inductance, removing the magnetic alloy material 13 creates an open magnetic path structure, which reduces variation in inductance, and allows for an inductance tolerance of about 5% to 10%, making it possible to use it as a signal circuit constant component. However, by removing the magnetic alloy material 13, the coil lead 12a.
１２ｂの接続固定が不可能となり、コイルリード１２ａ
、１２ｂをそのまま引出す構成となりプリント基板へ
の接続が困難で品質的にも作業的にも不利な状態となる
。12b becomes impossible to connect and fix, and the coil lead 12a
, 12b are pulled out as they are, making connection to the printed circuit board difficult and disadvantageous in terms of quality and work.
又、第６図の従来例では、両端にツバを有するドラム型
コア１８の一方のツバに２本の平行な端子溝１１３２Ｌ
、 １ ｓｂを設け、この端子溝１８１Ｌ。In addition, in the conventional example shown in FIG. 6, two parallel terminal grooves 1132L are formed in one brim of the drum-shaped core 18 having brim at both ends.
, 1 sb is provided, and this terminal groove 181L.
１８ｂに端子１７を嵌め込んで接着剤等で固定し、この
ドラム型コア１８にコイル１９を巻装し、両端のコイル
リード１９＆ 、１９ｂをそれぞれ端子１了に巻付は配
線しノ・ンダ付けされた開磁路構造で、前記従来例での
インダクタンスの変化は少なく、問題ないが端子１７が
コイルリード１９ａ。Insert the terminal 17 into 18b and fix it with adhesive or the like, then wind the coil 19 around this drum-shaped core 18, wire the coil leads 19 and 19b at both ends to the terminal 1, and wire them. With the open magnetic path structure, the change in inductance in the conventional example is small and there is no problem, but the terminal 17 is the coil lead 19a.
１９ｂの接続端子となり、又、プリント基板接続端子と
して共有化のだめ、プリント基板接続時、微小な機械的
ストレスによりドラム型コア１８の端子溝１８１Ｌ 、
１ ｓｂの端部と端子１７のドラム型コア１８の根元に
接着剤固定された接着部にクラック割れ等の歪みを生じ
コイルリード１８ａ。19b, and the terminal groove 181L of the drum-shaped core 18.
1. The coil lead 18a has cracks or other distortions in the bonded portion fixed with adhesive to the end of the sb and the base of the drum-shaped core 18 of the terminal 17.
１８ｂが切断状態となる。又、近年面実装化が進む中で
自動実装装着を行う時、ドラム型コア１８の端子固着端
面の反対側を吸着ノズルにより吸弓しプリント基板へ実
装マウント時、ドラム型コア１８の吸着部のツバにクラ
ックが生じたり割れる等の品質的課題があった。18b is in a disconnected state. In addition, when performing automatic mounting as surface mounting is progressing in recent years, the side opposite to the terminal fixed end surface of the drum-shaped core 18 is sucked with a suction nozzle, and when mounted on a printed circuit board, the suction part of the drum-shaped core 18 is There were quality issues such as cracks and breakage on the brim.
課題を解決するだめの手段
上記課題を解決するために本発明は、固定部とその固定
部の両端からそれぞれその延長線に対して４６°の角度
で外方へ延長された端子引出し部及びリード接続部とか
らなる端子をドラム型コアの一方のツバに形設された端
子溝に固着し、この端子の固定部には長穴を設け、又、
リード接続部の先端部を略扇形状とし、このドラム型コ
アの周側面に密着固定する略筒状の樹脂リングを挿入嵌
合固着するものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a fixed part and a terminal lead-out part and a lead extending outwardly from both ends of the fixed part at an angle of 46 degrees with respect to the extension line thereof. A terminal consisting of a connecting part is fixed to a terminal groove formed in one brim of the drum-shaped core, and a long hole is provided in the fixing part of this terminal, and
The tip of the lead connection portion is approximately fan-shaped, and a generally cylindrical resin ring that is tightly fixed to the circumferential surface of the drum-shaped core is inserted and fixed thereto.
作用
以上のように構成することにより、端子のＩＪ ＋ド接
続部と端子引出（一部の分離と端子固定部の長穴による
接着固定の機械的剪断面積の向上により端子引出し部の
機械的ストレスによる接着固定部のクラック、割れ等の
強度アップと、これによりコイルリードの切断課題の解
消が可能となり、又、ｍｌ指リング挿入固着によるドラ
ム型コアのツバのクラックや割れも解消し自動実装装着
が可能となり、開磁路構成のためインダクタンスの変化
も少なく、信号回路定数部品としての電気性能を向上す
ることができる。Effect By configuring as described above, the mechanical stress of the IJ+ terminal connection part and the terminal drawer (partial separation and the improvement of the mechanical shearing area of the adhesive fixation by the elongated hole of the terminal fixing part) is reduced. This increases the strength of the adhesive fixing part to prevent cracks and cracks, and this makes it possible to solve the problem of cutting the coil lead.It also eliminates the cracks and breaks in the drum-shaped core collar caused by the ML finger ring insertion and fixation, and allows automatic mounting and mounting. Since it has an open magnetic path configuration, there is little change in inductance, and the electrical performance as a signal circuit constant component can be improved.
実施例
以下、本発明の実施例を第１図から第３図により説明す
る。第１図において、１は両端にツバ１ａ、１ｂを有す
るドラム型コアであり（第１図す参照）、このドラム型
コア１の一方のツバ１？Ｌの外側面に２個の凹形の端子
溝２，３が形成されている。この端子溝２．３には端子
溝２，３にはめこまれて接着剤等により固着される固定
部４ａ６ａと、この固定部４１．５ａの一端から４６度
の角度で突出したリード接続部４ｂ、ｓｂと、反対側の
他端から相対する位置に４５度の角度で突出した端子引
出し音１ｋｃ、６ｃとによって構成された端子４．５（
第１図Ｃ参照）が組込まれて固着される（第１図Ｃ参照
）。Embodiments Hereinafter, embodiments of the present invention will be explained with reference to FIGS. 1 to 3. In FIG. 1, 1 is a drum-shaped core having flanges 1a and 1b at both ends (see FIG. 1), and one of the flanges 1? Two concave terminal grooves 2 and 3 are formed on the outer surface of L. In this terminal groove 2.3, there is a fixed part 4a6a that is fitted into the terminal grooves 2 and 3 and fixed with adhesive or the like, and a lead connecting part 4b that protrudes at an angle of 46 degrees from one end of this fixed part 41.5a. , sb, and terminal pull-out sounds 1kc and 6c protruding from the other end at an angle of 45 degrees at opposing positions.
(see FIG. 1C) is assembled and fixed (see FIG. 1C).
この端子４，６の固定部４１Ｌ、６ａには第３図ａに示
すように長円形状などの長穴６が打抜き加工され、この
固定部４ａ、５ａの一端から４６度の角度で突出しだリ
ード接続部４ｂ、ｓｂには第３図に示すように先端部に
は略扇形状部７が形成されている。The fixed parts 41L and 6a of the terminals 4 and 6 are punched with elongated holes 6, such as elliptical holes, as shown in FIG. As shown in FIG. 3, each of the lead connecting portions 4b and sb has a generally fan-shaped portion 7 formed at its tip.
この端子４．６は金属板を打抜いて個片化したものを用
いてもよいが、量産化を図る上で金属フープ材を用いる
方が有利となる。Although the terminals 4.6 may be formed by punching out a metal plate into individual pieces, it is more advantageous to use a metal hoop material for mass production.
上記ドラム型コア１にはコイル８が巻装され（第１図Ｃ
参照）、このコイル８の巻始め、巻終りのコイルリード
ａａ、ｓｂは端子４，６のリード接続部４ｂ、ｓｂに巻
付けられ半田付は等により接続されるが、第３図すに示
すようにリード接続部４ｂ、６ｂがドラム型コア１のツ
バ１ａの端部からの突出し部が短長のためコイルリード
８＆。A coil 8 is wound around the drum-shaped core 1 (see Fig. 1C).
The coil leads aa and sb at the beginning and end of winding of this coil 8 are wound around the lead connection parts 4b and sb of the terminals 4 and 6, and are connected by soldering, etc., as shown in Fig. 3. As shown in the figure, the lead connecting parts 4b and 6b protrude from the end of the collar 1a of the drum-shaped core 1 due to their short length.
８ｂをリード接続部４ｂ 、５ｂに巻付けた時リード接
続部４ｂ、６ｂから抜ける危険性が大きくこの抜は防止
として、略扇形状部７を設ける。又、第３図Ｃに示すよ
うにドラム型コア１の一方のツバ１ａの外側面の凹形端
子溝２．３に嵌着される端子４，５の固定部４１Ｌ１５
＆において金属板を打抜いた時、打抜き面は剪断面と破
断面で構成され金属板の打抜き部分が台形状となりドラ
ム型コア１の凹形の端子溝２．３に端子４．６の固定部
４１Ｌ 、 ５２Ｌを嵌着させる場合打抜き面側を端子
溝２．３の外方に嵌着することにより接着剤９等で固着
すると、端子１の固定部４＆ Ｉ ＥＶＩＬが端子溝２
．３に対し逆クサビ状に固着する。When the wire 8b is wound around the lead connecting portions 4b and 5b, there is a great risk that it will come off from the lead connecting portions 4b and 6b, so to prevent this from coming off, a substantially fan-shaped portion 7 is provided. Further, as shown in FIG. 3C, the fixing portion 41L15 of the terminals 4 and 5 is fitted into the concave terminal groove 2.3 on the outer surface of one collar 1a of the drum-shaped core 1.
When a metal plate is punched out at &, the punched surface consists of a sheared surface and a fractured surface, and the punched part of the metal sheet becomes trapezoidal, and the terminal 4.6 is fixed in the concave terminal groove 2.3 of the drum-shaped core 1. When fitting the parts 41L and 52L, the punched surfaces are fitted to the outside of the terminal groove 2.3 and fixed with adhesive 9, etc., so that the fixing part 4 & IEVIL of the terminal 1 is inserted into the terminal groove 2.
．． It sticks to 3 in a reverse wedge shape.
このドラム型コア１の端子固着端面の反対側より第１図
６に示した略筒状の樹脂リング１０を、その切欠き窓部
１０Ｃとギャップ部１０ｄが端子引出し部４Ｃ，５Ｑに
位置するように、又、略筒状の樹脂リング１０の切欠き
窓部１０ａ、１０ｂがリード接続部４ｂ 、５ｂに位置
するように嵌着し、切欠き窓部１ｏａ、１ｏｂに接着剤
等を塗布して固着し、第２図に示すような小型コイルを
完成する。The substantially cylindrical resin ring 10 shown in FIG. 1 is inserted from the opposite side of the terminal fixing end surface of the drum-shaped core 1 so that the notch window 10C and the gap 10d are located in the terminal drawer parts 4C and 5Q. In addition, the substantially cylindrical resin ring 10 is fitted so that the cutout windows 10a and 10b are located at the lead connection parts 4b and 5b, and an adhesive or the like is applied to the cutout windows 1oa and 1ob. This completes a small coil as shown in Figure 2.
発明の効果
以上のように本発明の小型コイルは、ドラム型コアの一
方のツバの外側面の端子溝に取付ける端子として、端子
溝に接着結合する固定部に長穴を設け、この固定部を、
打抜き面を端子溝の外方に嵌着固定し、この固定部の一
端よりその延長線に対して４５度の角度で外方へ突出し
た先端を略扇形状としたリード接続部と、固定部の他端
から４５度の角度で外方へ突出した端子引出し部を持っ
た構成としたため、コイルリード接続端子部とプリント
回路接続端子部の分離が可能となり、又、端子固定部の
長穴を設けることにより接着結合の剪断面積の拡大と固
定部取付は方法により固定部の剥離に対する逆クサビ効
果によるコイルリードの機械的ストレスに対する切断課
題も解消し、高品質、高信頼性が得られる。Effects of the Invention As described above, in the small coil of the present invention, as a terminal to be attached to the terminal groove on the outer surface of one brim of the drum-shaped core, a long hole is provided in the fixing part that is adhesively bonded to the terminal groove, and this fixing part is attached to the terminal groove. ,
A lead connecting part whose punched surface is fitted and fixed to the outside of the terminal groove, and whose tip protrudes outward from one end of the fixed part at an angle of 45 degrees with respect to the extension line thereof and whose tip is approximately fan-shaped, and the fixed part. The structure has a terminal pull-out part that protrudes outward at a 45-degree angle from the other end, making it possible to separate the coil lead connection terminal part and the printed circuit connection terminal part. By providing this method, the shearing area of the adhesive bond is expanded and the fixing part is attached, which solves the problem of cutting the coil lead due to mechanical stress due to the reverse wedge effect against peeling of the fixing part, resulting in high quality and high reliability.
さらにドラム型コアの外周側面に略筒状の樹脂リングを
挿着することによりドラム型コアの上面ソバ部の補強が
図られプリント基板への自動実装装着時の上面ツバのク
ラックや割れも解消し、又、略筒状の樹脂リングのため
開磁路構造でインダクタンスのバラツキも６％〜１０％
の公差が可能となり電気性能面においても、信号回路定
数部品として大きな効果を得、自動化によるコスト低減
も達成され、工業的価値は犬なるものである。Furthermore, by inserting a substantially cylindrical resin ring on the outer circumferential side of the drum-shaped core, the upper rib of the drum-shaped core is reinforced, eliminating cracks and breaks in the upper rib during automatic mounting on a printed circuit board. Also, due to the almost cylindrical resin ring, the open magnetic path structure reduces inductance variation by 6% to 10%.
In terms of electrical performance, it has become possible to achieve tolerances of 100 to 100 mm, and has great effects as a signal circuit constant component, and cost reductions have been achieved through automation, making it of great industrial value.
第１図Ｃ参照は本発明の一実施例の小型コイルの組立途
上の斜視図、第２図は同完成品の斜視図、第３図ａ −
、＝ ｃは同コイルの部分拡大斜視図と部分拡大断面図
、第４図ａ−ｙｃ、第５図＆ Ｎ＋５は従来例の小型コ
イルの組立途上並びに完成品斜視図、第６図は従来例の
部分組立拡大図、第７図は同インダクタンスとギャップ
寸法関係図である。
１・・・・・・ドラム型コア、１ａ、１ｂ・・・・・・
ツバ、２゜３・・・・・端子溝、４．１５・・・・・・
端子、４ａ、５１１・・・・・固定部、４ｂ 、５ｂ・
・・・・リード接続部、４Ｃ＋５ｃ・・・・・端子引出
し部、６・・・・・・長穴、７・・・・・・略扇形状部
、８・・・・・・コイル、８ ＆ ｔ ８ ｂ・・・・
・・コイル巻始め巻終りリード、９・・・・・・接着剤
固定部、１０・・・・・・略筒状樹脂リング、１ｏａ
、 １ａｂ 、 １ｏｃ・・・・・・切欠き窓部、１０
ｄ・・・・・・切欠き窓ギャップ部。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名区
第
図
／／FIG. 1C is a perspective view of a small coil according to an embodiment of the present invention in the process of being assembled, FIG. 2 is a perspective view of the completed product, and FIG. 3A-
, = c is a partially enlarged perspective view and a partially enlarged sectional view of the same coil, Figures 4 a-yc, Figures 5 & N+5 are perspective views of a conventional small coil in the process of being assembled and a completed product, and Figure 6 is a conventional example. FIG. 7 is a partially assembled enlarged view of the same inductance and gap dimension relationship diagram. 1...Drum-shaped core, 1a, 1b...
Collar, 2゜3...Terminal groove, 4.15...
Terminal, 4a, 511... Fixed part, 4b, 5b...
...Lead connection part, 4C+5c...Terminal drawer part, 6...Elongated hole, 7...Approximately fan-shaped part, 8...Coil, 8 &t 8 b...
...Coil winding start and winding end lead, 9...Adhesive fixing part, 10...Substantially cylindrical resin ring, 1oa
, 1ab, 1oc...notch window, 10
d...Notch window gap part. Name of agent: Patent attorney Shigetaka Awano and 1 other person
Claims (1)
に設けられた２つの端子溝に、この端子溝に嵌め込まれ
て接着剤で固着される固定部に長穴を設けこの固定部の
一端からその延長線に対して４６度の角度で外方へ延設
された端子引出部と前記固定部の他端からその延長線に
対して４５度の角度で外方へ突出する先端を略扇形状と
したリード接続部とからなる端子をそれぞれ取り付け、
前記ドラム型コアに巻装されたコイルのリードを前記端
子のリード接続部に接続して形成したコイル体に、略筒
状の樹脂リングを嵌着してなることを特徴とする小型コ
イル。Two terminal grooves provided on the outer surface of one of the flanges of a drum-shaped core having flanges at both ends are provided with elongated holes in a fixed part that is fitted into the terminal grooves and fixed with adhesive, and one end of this fixed part. The terminal drawer extends outward at an angle of 46 degrees with respect to the extension line, and the tip protrudes outward from the other end of the fixing part at an angle of 45 degrees with respect to the extension line. Attach each terminal consisting of a shaped lead connection part,
A small coil characterized in that a substantially cylindrical resin ring is fitted into a coil body formed by connecting the leads of the coil wound around the drum-shaped core to the lead connection portions of the terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63292747A JPH0644532B2 (en) | 1988-11-18 | 1988-11-18 | Small coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63292747A JPH0644532B2 (en) | 1988-11-18 | 1988-11-18 | Small coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02138710A true JPH02138710A (en) | 1990-05-28 |
| JPH0644532B2 JPH0644532B2 (en) | 1994-06-08 |
Family
ID=17785811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63292747A Expired - Fee Related JPH0644532B2 (en) | 1988-11-18 | 1988-11-18 | Small coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644532B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10303034A (en) * | 1997-04-30 | 1998-11-13 | Tokyo Parts Ind Co Ltd | Surface-mounting coil |
| JP2018056489A (en) * | 2016-09-30 | 2018-04-05 | 太陽誘電株式会社 | Electronic component |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5234933U (en) * | 1975-09-03 | 1977-03-11 | ||
| JPS57161217U (en) * | 1981-04-02 | 1982-10-09 | ||
| JPS61134005A (en) * | 1984-12-05 | 1986-06-21 | Matsushita Electric Ind Co Ltd | Small-sized coil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5136128A (en) * | 1974-09-20 | 1976-03-26 | Konishiroku Photo Ind | Kankoseisoseibutsu |
-
1988
- 1988-11-18 JP JP63292747A patent/JPH0644532B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5234933U (en) * | 1975-09-03 | 1977-03-11 | ||
| JPS57161217U (en) * | 1981-04-02 | 1982-10-09 | ||
| JPS61134005A (en) * | 1984-12-05 | 1986-06-21 | Matsushita Electric Ind Co Ltd | Small-sized coil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10303034A (en) * | 1997-04-30 | 1998-11-13 | Tokyo Parts Ind Co Ltd | Surface-mounting coil |
| JP2018056489A (en) * | 2016-09-30 | 2018-04-05 | 太陽誘電株式会社 | Electronic component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0644532B2 (en) | 1994-06-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |