JPS643332B2 - - Google Patents
Info
- Publication number
- JPS643332B2 JPS643332B2 JP14995680A JP14995680A JPS643332B2 JP S643332 B2 JPS643332 B2 JP S643332B2 JP 14995680 A JP14995680 A JP 14995680A JP 14995680 A JP14995680 A JP 14995680A JP S643332 B2 JPS643332 B2 JP S643332B2
- Authority
- JP
- Japan
- Prior art keywords
- cap
- coil
- drum
- shaped core
- caps
- 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
Links
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 15
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Coils Or Transformers For Communication (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明はリードレスタイプの小型インダクタの
製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a method of manufacturing a small leadless type inductor.
（従来の技術）
従来のリードレスタイプの小型インダクタとし
て実開昭51−115547号公報に記載されているもの
が知られている。(Prior Art) As a conventional small leadless type inductor, one described in Japanese Utility Model Application Publication No. 115547/1983 is known.
これは両端鍔部を有するコイルボビンにコイル
を巻回し、該コイルボビンの両端鍔部端面に金属
キヤツプ等の導電層を被着し、この導電層にコイ
ル端末を引出して接続するようにしたものであ
る。 In this method, a coil is wound around a coil bobbin having flanges at both ends, a conductive layer such as a metal cap is applied to the end faces of the flanges at both ends of the coil bobbin, and the end of the coil is pulled out and connected to this conductive layer. .
（発明が解決しようとする課題）
前述の従来装置では前記導電層は銀ペーストを
焼付けたもの、あるいは金属板を成型した金属キ
ヤツプ等により形成しており、それぞれ単体の部
品として作成するものであつた。このためコイル
の巻線作業と、例えば金属キヤツプの成型加工作
業、金属キヤツプの嵌着作業並びにコイル端末と
金属キヤツプとの半田付け作業を個別的に行わざ
るを得ず、各作業に関連性を持たせることが難し
かつたので製造の自動化、量産化に適さないとい
う問題があつた。また、前記公知例にあつては組
立てた製品のコイル端末部分が露出しているの
で、これを保護するための保護層を形成しなけれ
ばならず、このための工程が増加するという問題
もあつた。(Problem to be Solved by the Invention) In the conventional device described above, the conductive layer is formed of a baked silver paste or a metal cap formed from a metal plate, and each is made as a single component. Ta. For this reason, the coil winding work, for example, the metal cap molding work, the metal cap fitting work, and the soldering work between the coil terminal and the metal cap, have to be performed separately, and each work is not related to each other. Since it was difficult to make the device durable, there was a problem that it was not suitable for manufacturing automation and mass production. In addition, in the above-mentioned known example, since the coil end portion of the assembled product is exposed, a protective layer must be formed to protect it, and there is also the problem that the number of steps for this increases. Ta.
本発明は前記事情に鑑みてなされたものであ
り、組立の自動化、量産化に適し、かつ製造工程
の簡略化が図れる小型インダクタの製造方法を提
供することを目的とするものである。 The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method for manufacturing a small inductor that is suitable for automated assembly and mass production, and that can simplify the manufacturing process.
［発明の構成］
（課題を解決するための手段）
前記目的を達成するための本発明は、少なくと
も、ドラム型コアの中間部にコイルを巻回し、コ
イル端末を導出して鍔部の端面に設けた導電体層
に電気的に接続する工程、導電体層に接する一平
面を有する角形のキヤツプを平面に展開した少な
くとも２枚の展開部が中心板に対して対称とする
ように連結部を介して中心板と結合する金属製原
板を打ち抜き、前記キヤツプが相対向するように
所定部分を折曲する工程、及び金属製原板を折曲
して形成された相対向する前記キヤツプ間に前記
工程で得たドラム型コアを、鍔部が前記キヤツプ
に嵌合するように装着し、次いで鍔部の導電体面
と前記キヤツプとを電気的に接続した後、前記キ
ヤツプと連結部とを切断する工程とを含むもので
ある。[Structure of the Invention] (Means for Solving the Problems) The present invention for achieving the above object includes at least winding a coil around the middle part of a drum-shaped core, leading out the end of the coil, and winding the coil around the end face of the flange. In the step of electrically connecting to the conductive layer provided, the connecting portion is connected so that at least two expanded portions of the rectangular cap having one plane in contact with the conductive layer are symmetrical with respect to the center plate. a step of punching out a metal original plate to be combined with the center plate through a metal plate, and bending a predetermined portion so that the caps face each other; and a step of forming a space between the opposing caps formed by bending the metal original plate. A step of mounting the drum-shaped core obtained in step 1 so that the flange part fits into the cap, and then electrically connecting the conductive surface of the flange part to the cap, and then cutting the cap and the connecting part. This includes:
（作用）
製造工程中に金属製原板を打ち抜き、これを起
立させてインダクタを装着するという一連の工程
を実行することができるので、自動化、量産化が
行える。(Function) During the manufacturing process, a series of steps such as punching out a metal original plate, standing it up, and installing an inductor can be performed, so automation and mass production can be achieved.
（実施例）
以下実施例により本発明を具体的に説明する。
第１図ａは、本発明の製造方法を用いて製造した
小型インダクタを示す一部切欠した斜視図であ
る。この小型インダクタ１０は、中央部にコイル
１１が巻かれ、両端に２枚の円柱形の鍔部１２
ａ，１２ｂが形成され、鍔部１２ａ，１２ｂの周
側面から端面部１４ａ，１４ｂに亘つてコイル１
１の端末１３ａ，１３ｂが引き出されており、ま
た、両鍔部の端面１４ａ，１４ｂ（但し端面１４
ｂは図に表われない。）には例えば銀ペーストな
どで形成した導電体層１５ａ，１５ｂ（但し導電
体層１５ｂは図に表われない。）が設けられたド
ラム型コア１２と、前記ドラム型コア１２の鍔部
１２ａ，１２ｂに嵌合する金属製の桝形キヤツプ
１６ａ，１６ｂとによつて構成されており、コイ
ル１１の端末１３ａ，１３ｂは前記導電体層１５
ａ，１５ｂに半田付けされ、かつ前記桝形キヤツ
プ１６ａ，１６ｂの内底面に半田付けされてお
り、また鍔部１２ａ，１２ｂの導電体層１５ａ，
１５ｂを除く端面１４ａ，１４ｂは、例えば熱硬
化性接着剤を介して金属製桝形キヤツプ１６ａ，
１６ｂの内底面と結合している。(Example) The present invention will be specifically described below with reference to Examples.
FIG. 1a is a partially cutaway perspective view showing a small inductor manufactured using the manufacturing method of the present invention. This small inductor 10 has a coil 11 wound around the center and two cylindrical flanges 12 at both ends.
a, 12b are formed, and the coil 1 extends from the circumferential side of the collar portions 12a, 12b to the end surface portions 14a, 14b.
1 terminals 13a, 13b are pulled out, and end surfaces 14a, 14b of both flanges (however, end surfaces 14
b is not shown in the figure. ) includes a drum-shaped core 12 provided with conductive layers 15a and 15b (however, the conductive layer 15b is not shown in the figure) formed of, for example, silver paste, and a flange 12a of the drum-shaped core 12. The terminals 13a, 13b of the coil 11 are connected to the conductive layer 15.
a, 15b, and soldered to the inner bottom surfaces of the box-shaped caps 16a, 16b, and the conductor layers 15a,
The end surfaces 14a and 14b excluding 15b are attached to metal box-shaped caps 16a and 14b, for example, via a thermosetting adhesive.
It is connected to the inner bottom surface of 16b.
以上のように構成した小型インダクタはドラム
型コアの両端それぞれ桝形キヤツプを嵌合しただ
けであるから、構造が非常に簡単であり、桝型キ
ヤツプの一側面が平面となつているので基板上に
直接搭載することができると共に座りを良好なも
のとすることができる。 The small inductor constructed as described above has a very simple structure, as it is simply a drum-shaped core fitted with square-shaped caps at both ends.One side of the square-shaped cap is flat, so it can be easily placed on the board. It can be directly mounted and provides a comfortable seating position.
この他に、キヤツプを有底の三角形状キヤツプ
としてもよいし、また有底の六角形状キヤツプ等
の多角形状としてもよい。さらにキヤツプを第１
図ｂに示すような断面コ字状のキヤツプにしても
よい。 In addition, the cap may be a triangular cap with a bottom or a polygonal shape such as a hexagonal cap with a bottom. Furthermore, the cap is the first
The cap may have a U-shaped cross section as shown in Figure b.
次に前記小型インダクタの製造方法の一実施例
について図面を参照しながら説明する。 Next, an embodiment of the method for manufacturing the small inductor will be described with reference to the drawings.
第２図はドラム型コアの斜視図、第３図はコイ
ルを巻いたドラム型コアの斜視図、第４図は前記
桝型キヤツプを形成する打ち抜き原板の一部切欠
した正面図及び第５図は第４図に示す打ち抜き原
板を折曲したものの斜視図である。 FIG. 2 is a perspective view of the drum-shaped core, FIG. 3 is a perspective view of the drum-shaped core with a coil wound thereon, FIG. 4 is a partially cutaway front view of the punched original plate forming the square-shaped cap, and FIG. 5 FIG. 5 is a perspective view of the punched original sheet shown in FIG. 4 which is bent.
先ず、第２図に示すような中央部が細径部２０
であり、細径部２０の両端に円柱形の鍔部２１
ａ，２１ｂを設けたドラム型コア２３を用意し、
次いで前記鍔部２１ａ，２１ｂの細径部２０とは
反対側の端面２４ａ，２４ｂ（但し端面２４ｂは
図に表われない。）それぞれにたとえれば銀ペー
ストなどで導電体層２５ａ，２５ｂ（但し、導電
体層２５ｂは図に表われない。）をそれぞれ設け
る。次いで、第３図に示すようにドラム型コア２
３の中央細径部２０にコイル２６を巻き回し、コ
イルの端末２６ａ，２６ｂは鍔部２１ａ，２１ｂ
の周側面を介して鍔部２１ａ，２１ｂの端面２４
ａ，２４ｂに設けた導電体層２５ａ，２５ｂに接
続されるように折曲して引き出す。一方、桝型キ
ヤツプは次のようにして形成する。すなわち、第
４図に示すように、所定の幅を有する中心部２７
たとえば板状体を中心にして桝型キヤツプを平面
に展開した２枚の展開部２８ａ，２８ｂがそれぞ
れ連結部２９ａ，２９ｂを介して対称に位置する
ように、一枚の金属板を打ち抜き、これを打ち抜
き原板３０とする。 First, the central part is a narrow diameter part 20 as shown in FIG.
A cylindrical collar portion 21 is provided at both ends of the narrow diameter portion 20.
A drum-shaped core 23 provided with a and 21b is prepared,
Next, conductor layers 25a, 25b (however, the end surfaces 24b are not shown in the figure) of the flanges 21a, 21b on the opposite side from the narrow diameter portion 20 are coated with silver paste or the like. A conductor layer 25b (not shown in the figure) is provided respectively. Next, as shown in FIG.
The coil 26 is wound around the central narrow diameter part 20 of the coil 2, and the ends 26a and 26b of the coil are connected to the flanges 21a and 21b.
The end surfaces 24 of the flanges 21a and 21b are
It is bent and pulled out so as to be connected to the conductor layers 25a and 25b provided on the electrodes a and 24b. On the other hand, a box-shaped cap is formed as follows. That is, as shown in FIG.
For example, a metal plate is punched out so that the two developed parts 28a and 28b, which are formed by developing a square cap into a plane with the plate-shaped body as the center, are located symmetrically through the connecting parts 29a and 29b, respectively. is a punched original plate 30.
次に第５図に示すように、２枚の展開部２８
ａ，２８ｂが桝型キヤツプとなるように図示矢印
の方向に金属板を折曲形成し、また、キヤツプ３
１ａ，３１ｂが相対向するように連結部２９ａ，
２９ｂを折曲する。このとき、桝型キヤツプの一
辺の長さは前記ドラム型コア２３の鍔部の直径よ
りも僅かに長くなるようにする。そして、第３図
に示す、コイルを巻いたドラム型コア２３の鍔部
２１ａ，２１ｂの導電体層２５ａ，２５ｂに予め
半田を付着させ（予備半田）、また両鍔部２１ａ，
２１ｂの端面近傍の周側面に熱硬化性接着剤を塗
布しておいたものを第６図に示すように、相対向
するキヤツプ３１ａ，３１ｂ間に装着、嵌合し、
次いで、第６図中の矢印の方向に適宜の治具を用
いて例えば約200℃に加熱しながら押圧すること
により熱硬化性接着剤を熱硬化させると共に半田
を溶融してドラム型コア２３の鍔部２１ａ，２１
ｂと導電体層２５ａ，２５ｂ及び桝型キヤツプ３
１ａ，３１ｂとを一体に結合する。このとき、前
記接着剤の硬化によつて前記ドラム型コア２３の
両端鍔部２１ａ，２１ｂの周側面と前記キヤツプ
３１ａ，３１ｂとの間の隙間が接着剤によつて埋
められた状態で強固に固定され、かつ前記半田付
けによりコイル端末２６ａ，２６ｂと導電体２５
ａ，２５ｂ及び桝型キヤツプとが電気的に接続さ
れることになる。最後に、ドラム型コア２３と一
体になつてキヤツプ３１ａ，３１ｂと連結部２９
ａ，２９ｂとの結合部分を切断して、第１図ａに
示すような小型インダクタを得ることができる。 Next, as shown in FIG.
A metal plate is bent in the direction of the arrow shown in the figure so that a and 28b become square-shaped caps, and the cap 3
The connecting portions 29a, 1a, 31b are opposite to each other.
29b. At this time, the length of one side of the square-shaped cap is made to be slightly longer than the diameter of the flange of the drum-shaped core 23. Then, as shown in FIG. 3, solder is applied in advance to the conductor layers 25a and 25b of the flanges 21a and 21b of the drum-shaped core 23 around which the coil is wound (preliminary solder), and both the flanges 21a and
A thermosetting adhesive is applied to the peripheral side near the end face of cap 21b, and as shown in FIG.
Next, the thermosetting adhesive is heated and pressed in the direction of the arrow in FIG. Flange parts 21a, 21
b, conductor layers 25a, 25b, and square-shaped cap 3
1a and 31b are combined together. At this time, as the adhesive hardens, the gaps between the circumferential surfaces of the flanges 21a and 21b at both ends of the drum-shaped core 23 and the caps 31a and 31b are firmly filled with the adhesive. fixed, and the coil terminals 26a, 26b and the conductor 25 are connected by the soldering.
a, 25b and the box-shaped cap are electrically connected. Finally, the caps 31a, 31b and the connecting portion 29 are integrated with the drum-shaped core 23.
A small inductor as shown in FIG. 1a can be obtained by cutting the connection portions a and 29b.
以上、本出願に係る小型インダクタの製造方法
の一実施例について説明したが、本発明は前記実
施例に限定されるものではなく、本出願に係る発
明の要旨を変更しない限り種々の変形例を包含す
ることはいうまでもない。 Although one embodiment of the method for manufacturing a small inductor according to the present application has been described above, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without changing the gist of the invention according to the present application. Needless to say, it includes.
変形例として、例えば板状体を中心にして対称
に位置する展開部を、第７図に示すような断面コ
字状キヤツプを展開したような形状にしてもよ
い。また、長尺状の中心線に対称となるように連
結部を介して位置する展開部を板状体に所定間隔
毎に多数設けておくと、小型インダクタの連続的
生産に好適である。尚、第７図において、第４図
と共通する部材は同一の番号を付してある。 As a modification, for example, the expanded portions located symmetrically with respect to the plate-like body may be shaped like an expanded U-shaped cap in cross section as shown in FIG. Further, it is suitable for continuous production of small inductors if a large number of expanded portions are provided at predetermined intervals on the plate-like body, and are located symmetrically with respect to the center line of the elongated shape via connecting portions. Incidentally, in FIG. 7, members common to those in FIG. 4 are given the same numbers.
また、前記実施例ではドラム型コアの鍔部の直
径と角形キヤツプの一辺の長さとを略同等かある
いは後者を僅かに長くするようにして両者が密に
嵌合するようにしたが、両者間に多少の隙間がで
きるようにしても同様の効果を得ることができ
る。 Furthermore, in the above embodiment, the diameter of the flange of the drum-shaped core and the length of one side of the rectangular cap were made approximately equal to each other, or the latter was made slightly longer so that they fit tightly together. The same effect can be obtained even if there is some gap between the two.
［発明の効果］
本発明ではコイルを巻いたドラム型コアの鍔部
にキヤツプを嵌合しただけの簡単な構造であるか
ら、その製造は極めて容易である。また、コアは
製造の容易なドラム型コアをそのまま使用して、
これを並立するキヤツプに挿入するものであるた
め自動巻線機及び自動挿入機等を使つて自動化を
行なうことが容易になる。さらに、コイル端末を
キヤツプ表面に接続するものではないので、保護
層を設ける工程は必要ない。[Effects of the Invention] Since the present invention has a simple structure in which a cap is fitted to the flange of a drum-shaped core around which a coil is wound, manufacturing thereof is extremely easy. In addition, the core uses a drum-shaped core that is easy to manufacture,
Since this is inserted into parallel caps, it is easy to automate using an automatic winding machine, an automatic insertion machine, etc. Furthermore, since the coil terminal is not connected to the cap surface, there is no need to provide a protective layer.
第１図ａは本発明の製造方法によつて製造され
た小型インダクタを示す一部切欠斜視図、第１図
ｂはその変形例である小型インダクタを示す一部
切欠斜視図、第２図はドラム型コアの斜視図、第
３図はコイルを巻いたドラム型コアの斜視図、第
４図は角形キヤツプを形成する打ち抜き原板の一
部切欠した正面図、第５図は第４図に示す打ち抜
き原板を折曲したものの斜視図、第６図は第５図
に示す打ち抜き原板にドラム型コアを装着したも
のの斜視図、並びに、第７図は断面コ字状キヤツ
プを形成する打ち抜き原板の一部切欠した正面図
である。
１０……小型インダクタ、１１……コイル、１
２ａ，１２ｂ……鍔部、１５ａ，１５ｂ……導電
体層、１６ａ，１６ｂ……角形キヤツプ、２０…
…細径部、２１ａ，２１ｂ……鍔部、２３……ド
ラム型コア、２５ａ，２５ｂ……導電体面、２６
……コイル、２７……中心部、２８ａ，２８ｂ…
…展開部、２９ａ，２９ｂ……連結部、３０……
打ち抜き原板、３１ａ，３１ｂ……角形キヤツ
プ。
FIG. 1a is a partially cutaway perspective view showing a small inductor manufactured by the manufacturing method of the present invention, FIG. 1b is a partially cutaway perspective view showing a small inductor that is a modification thereof, and FIG. Fig. 3 is a perspective view of a drum-shaped core with a coil wound thereon, Fig. 4 is a partially cutaway front view of a punched original plate forming a rectangular cap, and Fig. 5 is shown in Fig. 4. FIG. 6 is a perspective view of the punched sheet after being bent, FIG. 6 is a perspective view of the punched sheet shown in FIG. 5 with a drum-shaped core attached, and FIG. FIG. 3 is a partially cutaway front view. 10...Small inductor, 11...Coil, 1
2a, 12b...flange part, 15a, 15b...conductor layer, 16a, 16b...square cap, 20...
...Small diameter part, 21a, 21b...Flame part, 23...Drum-shaped core, 25a, 25b...Conductor surface, 26
...Coil, 27...Center, 28a, 28b...
...Development part, 29a, 29b...Connection part, 30...
Punched original plates, 31a, 31b...square caps.
Claims (1)
を巻回し、コイル端末を導出して鍔部の端面に設
けた導電体層に電気的に接続する工程、導電体層
に接する一平面を有する角形のキヤツプを平面に
展開した少なくとも２枚の展開部が中心板に対し
て対称とするように連結部を介して中心板と結合
する金属製原板を打ち抜き、前記キヤツプが相対
向するように所定部分を折曲する工程、及び金属
製原板を折曲して形成された相対向する前記キヤ
ツプ間に前記工程で得たドラム型コアを、鍔部が
前記キヤツプに嵌合するように装着し、次いで鍔
部の導電体面と前記キヤツプとを電気的に接続し
た後、前記キヤツプと連結部とを切断する工程と
を含むことを特徴とする小型インダクタの製造方
法。1 At least, the process of winding a coil around the middle part of the drum-shaped core, leading out the coil end and electrically connecting it to the conductive layer provided on the end face of the flange, A metal original plate is punched out to be connected to the center plate via a connecting part so that at least two expanded parts of the caps are flattened are symmetrical with respect to the center plate, and predetermined parts are cut out so that the caps face each other. The drum-shaped core obtained in the above step is installed between the opposing caps formed by bending a metal original plate so that the flange part fits into the cap, and then the flange is 1. A method of manufacturing a small inductor, comprising the step of electrically connecting a conductor surface of the cap to the cap, and then cutting the cap and the connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14995680A JPS5773915A (en) | 1980-10-24 | 1980-10-24 | Small-sized inductor and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14995680A JPS5773915A (en) | 1980-10-24 | 1980-10-24 | Small-sized inductor and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5773915A JPS5773915A (en) | 1982-05-08 |
| JPS643332B2 true JPS643332B2 (en) | 1989-01-20 |
Family
ID=15486267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14995680A Granted JPS5773915A (en) | 1980-10-24 | 1980-10-24 | Small-sized inductor and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5773915A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10172853A (en) * | 1996-12-14 | 1998-06-26 | Taiyo Yuden Co Ltd | Coil type electronic parts and its manufacturing method |
| JP4651135B2 (en) * | 1998-09-07 | 2011-03-16 | Ｔｄｋ株式会社 | Coil parts |
| JP4983389B2 (en) * | 2007-05-16 | 2012-07-25 | Ｔｄｋ株式会社 | Coil parts |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51115547U (en) * | 1975-03-17 | 1976-09-18 |
-
1980
- 1980-10-24 JP JP14995680A patent/JPS5773915A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5773915A (en) | 1982-05-08 |
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