JPH0714734A - Bobbin holding method for automatic winding machine - Google Patents
Bobbin holding method for automatic winding machineInfo
- Publication number
- JPH0714734A JPH0714734A JP5177506A JP17750693A JPH0714734A JP H0714734 A JPH0714734 A JP H0714734A JP 5177506 A JP5177506 A JP 5177506A JP 17750693 A JP17750693 A JP 17750693A JP H0714734 A JPH0714734 A JP H0714734A
- Authority
- JP
- Japan
- Prior art keywords
- bobbin
- center pin
- holder
- hole
- rib
- 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
Landscapes
- Coil Winding Methods And Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ボビンの巻軸に線材を
巻回する自動巻線機に係り、特に巻軸の孔の内壁に複数
のリブが設けられたボビンの保持方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic winding machine for winding a wire on a winding shaft of a bobbin, and more particularly to a method for holding a bobbin having a plurality of ribs on the inner wall of the hole of the winding shaft. is there.
【０００２】[0002]
【従来の技術】図７に示すように、円筒形の巻軸12の孔
11の内壁に複数のリブ14を有するボビン10を具えたコイ
ル部品がある。このボビン10には、巻軸12の周りに線材
を巻回した後、図示しない磁性体からなるインダクタン
ス調整用のネジコアが巻軸12の中に回転しながら圧入し
て取付けられる。ネジコアを圧入する際にリブ14にはネ
ジコアによって雌ネジが切られる。このようなボビン10
に自動巻線機によって巻線を施すには、例えば、図８に
示すように、先端に深い割溝22を形成して弾性を持たせ
たセンターピン20を具えた自動巻線機を用い、二つの弾
性片24をボビン10の孔11に挿入して、その弾性を利用し
てボビン10を保持するようにしていた。2. Description of the Related Art As shown in FIG. 7, a hole of a cylindrical winding shaft 12 is provided.
There is a coil component having a bobbin 10 having a plurality of ribs 14 on the inner wall of 11. After winding a wire around the winding shaft 12, a thread core (not shown) for adjusting inductance, which is made of a magnetic material, is press-fitted and attached to the bobbin 10 while rotating into the winding shaft 12. When the screw core is press-fitted, the rib 14 is internally threaded by the screw core. Bobbin 10 like this
In order to apply a winding wire to an automatic winding machine, for example, as shown in FIG. 8, an automatic winding machine equipped with a center pin 20 having a deep split groove 22 at its tip and having elasticity, The two elastic pieces 24 are inserted into the holes 11 of the bobbin 10 and the elasticity is utilized to hold the bobbin 10.
【０００３】[0003]
【発明が解決しようとする課題】ところが、ボビン10が
小型化して巻軸12の内径が３ｍｍ以下程度になると、セ
ンターピン20の加工が難しく、弾性片24の強度が低下す
るうえ、弾性力が小さくなりボビン10を保持する力が弱
まる欠点があった。また、弾性片24が外力によって変形
しやすく保持力の変動が大きくなるので、小型のボビン
10を安定して保持するのが困難で、ボビン保持上のトラ
ブルが多発する問題があった。However, when the bobbin 10 is downsized and the inner diameter of the winding shaft 12 is about 3 mm or less, it is difficult to process the center pin 20, the strength of the elastic piece 24 is reduced, and the elastic force is reduced. There is a drawback that the size of the bobbin becomes smaller and the holding power of the bobbin 10 is weakened. Further, since the elastic piece 24 is easily deformed by an external force and the fluctuation of the holding force becomes large, a small bobbin
It was difficult to hold 10 in a stable manner, and there were many problems in holding the bobbin.
【０００４】[0004]
【発明の目的】本発明は、このような従来の自動巻線機
における欠点を解消し、センターピンの変形がなく、安
定したボビン保持力が得られ、小型のボビンにも容易に
対応できるボビン保持部の構造とそのボビン保持方法を
提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves the above drawbacks of the conventional automatic winding machine, has no deformation of the center pin, has a stable bobbin holding force, and is easily compatible with small bobbins. An object is to provide a structure of a holding portion and a bobbin holding method thereof.
【０００５】[0005]
【課題を解決するための手段】本発明は、長手方向に沿
った貫通孔を有しボビンの巻軸に嵌合する突起または凹
部が先端部に形成された筒状のホルダーと、円柱状の径
小部の前端に径小部よりも直径が大きな係合部が形成さ
れ係合部の周辺にボビンのリブに対応する溝が形成され
てホルダーの貫通孔の中に挿入されたセンターピンとを
具え、センターピンが、ホルダーの貫通孔の中を長手方
向の軸に沿って移動自在で且つこの軸を中心にホルダー
の中を回動自在で、ホルダーに対して後方にスプリング
で付勢されており、センターピンとホルダーが一体的に
結合した状態でこの軸を中心に回転可能に自動巻線機の
ボビン保持部を構成し、巻軸がホルダーの先端部に嵌合
可能なボビンを、巻軸の孔がセンターピンに対向するよ
うに配置し、係合部の溝をリブの位置に合わせてホルダ
ーから突出させたセンターピンを、ボビンの巻軸の孔の
中に挿入し、この孔の奥に係合部が達するまでセンター
ピンを前進させ、次いでセンターピンを所定の角度回動
して係合部によってリブに切り込みを入れ、リブと係合
部が係合した状態でセンターピンを後退させて、センタ
ーピンの係合部とホルダーとの間にボビンを挟んで保持
する自動巻線機のボビン保持方法を特徴とする。According to the present invention, there is provided a cylindrical holder having a through hole extending in the longitudinal direction and having a projection or a concave portion formed at a tip end thereof for fitting with a bobbin winding shaft, and a cylindrical holder. An engaging portion having a diameter larger than that of the small diameter portion is formed at the front end of the small diameter portion, a groove corresponding to the rib of the bobbin is formed around the engaging portion, and a center pin inserted into the through hole of the holder is formed. The center pin is movable in the through hole of the holder along a longitudinal axis and rotatable in the holder about this axis, and is biased by a spring rearward with respect to the holder. The bobbin holding part of the automatic winding machine is configured so that it can rotate around this shaft when the center pin and the holder are integrally connected. Place the hole so that it faces the center pin and engage Insert the center pin that protrudes from the holder by aligning the groove of the with the position of the rib into the hole of the bobbin winding shaft, advance the center pin until the engaging part reaches the back of this hole, and then move the center pin. Rotate a predetermined angle to make a notch in the rib by the engaging part, retract the center pin with the rib and the engaging part engaged, and place the bobbin between the engaging part of the center pin and the holder. The bobbin holding method of the automatic winding machine, which holds by sandwiching, is a feature.
【０００６】[0006]
【実施例】以下、図７のボビン10を保持する場合を例に
とり、本発明の一実施例について図面と共に説明する。
なお、図１〜図３においては、図の右方向を前方とし、
左方向を後方として説明する。図１は自動巻線機のボビ
ン保持部の主要部とその前方に配置されたボビン10を示
している。ボビン10は一体成形された巻軸12とベース部
18を具え、ベース部18には端子19が植設してある。巻軸
12の孔11の内壁には四つのリブ14が設けられ、巻軸12の
上端の鍔15には二つの凹部16が形成してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, taking the case of holding the bobbin 10 of FIG. 7 as an example.
In addition, in FIG. 1 to FIG.
The left direction will be described as the rear. FIG. 1 shows a main part of a bobbin holding part of an automatic winding machine and a bobbin 10 arranged in front of the main part. The bobbin 10 is a integrally formed winding shaft 12 and base part.
The base portion 18 is provided with a terminal 19, and a terminal 19 is planted. Reel
Four ribs 14 are provided on the inner wall of the hole 11 of 12 and two recesses 16 are formed in the flange 15 at the upper end of the winding shaft 12.
【０００７】30は筒状のホルダー、40はホルダー30の中
に移動自在に取付けられているセンターピンである。ホ
ルダー30は、図６にも示すように長手方向に沿った貫通
孔32を有し、ボビン10の凹部16に係合可能な突起34が先
端部に形成されている。センターピン40は、全体が細長
い丸棒状をした金属からなり、円柱状の基部42及びこの
基部42よりも直径の小さな円柱状の径小部44を具えてい
る。径小部44の前端には径小部44よりも直径が大きな係
合部46を設け、この係合部46の周辺は薄く鋭い形状に加
工してある。係合部46の周辺には、また、ボビン10のリ
ブ14が通過できる大きさの溝48をリブ14に対応する位置
に形成してある。係合部46の直径はボビン10の孔11の内
径よりも僅かに小さくしてあり、リブ14と溝48の位置を
合わせたときのみ、係合部46はボビン10の孔11の中に挿
入できる。また、径小部44の直径は四つのリブ14の内側
に接する円の直径よりも僅かに小さくしてあり、径小部
44はボビン10の孔11に、殆ど隙間なしに嵌合することが
できる。センターピン40は、ホルダー30の貫通孔32の中
に挿入され、貫通孔32の中を長手方向の軸Ａに沿って所
定の距離移動でき、且つ軸Ａを中心にホルダー30の中で
４５°だけ回動できるようにしてある。センターピン40
は、スプリング50によってホルダー30に対し常に後方に
付勢されている。そして、センターピン40とホルダー30
は、一体的に結合した状態で軸Ａを中心に回転可能にな
されている。Reference numeral 30 is a cylindrical holder, and 40 is a center pin movably mounted in the holder 30. As shown in FIG. 6, the holder 30 has a through hole 32 extending in the longitudinal direction, and a protrusion 34 engageable with the concave portion 16 of the bobbin 10 is formed at the tip end portion. The center pin 40 is made of a metal in the shape of an elongated round bar as a whole, and has a cylindrical base portion 42 and a cylindrical small diameter portion 44 having a diameter smaller than that of the base portion 42. An engaging portion 46 having a diameter larger than that of the small-diameter portion 44 is provided at the front end of the small-diameter portion 44, and the periphery of the engaging portion 46 is processed into a thin and sharp shape. A groove 48 having a size that allows the rib 14 of the bobbin 10 to pass through is formed around the engaging portion 46 at a position corresponding to the rib 14. The diameter of the engaging portion 46 is slightly smaller than the inner diameter of the hole 11 of the bobbin 10, and the engaging portion 46 is inserted into the hole 11 of the bobbin 10 only when the rib 14 and the groove 48 are aligned. it can. Further, the diameter of the small diameter portion 44 is slightly smaller than the diameter of the circle contacting the inside of the four ribs 14,
44 can be fitted in the hole 11 of the bobbin 10 with almost no gap. The center pin 40 is inserted into the through hole 32 of the holder 30 and can move within the through hole 32 along the longitudinal axis A by a predetermined distance, and at the center of the axis A 45 ° in the holder 30. It can be rotated only. Center pin 40
Is always biased rearward with respect to the holder 30 by a spring 50. And center pin 40 and holder 30
Are rotatable about an axis A in a state of being integrally connected.
【０００８】次に、この自動巻線機のボビン保持部の動
作について説明する。図１〜図３においては図示を省略
してあるが、図４及び図５に示すような上下動自在な供
給台60がボビン保持部の前方に設けてある。ボビン10は
供給台60の窪みの上に載置してあり、衝撃吸収用のスプ
リング65を取付けたロッド62を端子19の先端に当接させ
てある。その結果、ボビン10は図４で左方向及び上方向
以外の方向への動きが制限されている。図１は、ボビン
10の巻軸12の孔11がセンターピン40に対向する位置まで
供給台60をせり上げたときの状態を示している。このよ
うに、ボビン保持部の前方にボビン10を移送して配置し
た状態から、まず、図示しないエアーシリンダ等でセン
ターピン40の後部を押圧して先端部をホルダー30から突
出させ、リブ14が溝48を通るようにして係合部46及び径
小部44を巻軸12の孔11に挿入する。そして図２のよう
に、係合部46が孔11の奥に達するまでセンターピン40を
前進させ、この状態でセンターピン40を４５°程度回動
して係合部46をリブ14に切れ込ませる。この後、エアー
シリンダを後退させると、センターピン40はスプリング
50の力で後退して係合部46がリブ14に係合したまま、ボ
ビン10を供給台60（図４、図５）から引き出し、さらに
後退してボビン10の凹部16がホルダー30の突起34に嵌合
したところで停止する。このようにして、ボビン10は、
図３のように係合部46とホルダー30の前端との間に挟ま
れて保持された状態となる。Next, the operation of the bobbin holding portion of this automatic winding machine will be described. Although not shown in FIGS. 1 to 3, a vertically movable supply base 60 as shown in FIGS. 4 and 5 is provided in front of the bobbin holding portion. The bobbin 10 is placed on the depression of the supply base 60, and the rod 62 having the shock absorbing spring 65 attached thereto is brought into contact with the tip of the terminal 19. As a result, the bobbin 10 is restricted from moving in directions other than the leftward and upward directions in FIG. Figure 1 is a bobbin
10 shows a state in which the supply base 60 is raised to a position where the hole 11 of the winding shaft 12 of 10 faces the center pin 40. In this way, from the state in which the bobbin 10 is transferred and arranged in front of the bobbin holding portion, first, the rear portion of the center pin 40 is pressed by an air cylinder or the like (not shown) to project the tip portion from the holder 30, and the rib 14 is formed. The engaging portion 46 and the small diameter portion 44 are inserted into the hole 11 of the winding shaft 12 so as to pass through the groove 48. Then, as shown in FIG. 2, the center pin 40 is advanced until the engaging portion 46 reaches the inside of the hole 11, and in this state, the center pin 40 is rotated about 45 ° to cut the engaging portion 46 into the rib 14. No After that, when the air cylinder is retracted, the center pin 40 springs.
The bobbin 10 is pulled out from the supply base 60 (FIGS. 4 and 5) while the engaging portion 46 is retracted by the force of 50 while the engaging portion 46 is engaged with the rib 14, and is further retracted so that the concave portion 16 of the bobbin 10 is the protrusion of the holder 30. Stop when it is fitted to 34. In this way, bobbin 10
As shown in FIG. 3, it is sandwiched and held between the engaging portion 46 and the front end of the holder 30.
【０００９】ホルダー30の突起34がボビン10の凹部16に
嵌合しているのでボビン10は回転することがなく、また
センターピン40の径小部44がボビン10の孔11に殆ど隙間
なしに嵌合するので、ボビン10は中心の位置ずれも少な
く正確に位置決めされてボビン保持部に保持される。し
たがって、供給台60を下降させた後、軸Ａを中心にして
センターピン40とホルダー30を回転することにより、ボ
ビン10の巻軸12への巻線を容易に行うことができる。巻
線終了後は供給台60を上昇させてからセンターピン40を
前進させ、ボビン10を供給台60上に戻した状態で、セン
ターピン40を前とは逆方向に４５°回動してボビン10か
ら引き抜けばよい。センターピン40をボビン10から引き
抜く際には、図示しないストッパー等でボビン10を押さ
えるようにして行う。Since the protrusion 34 of the holder 30 is fitted in the concave portion 16 of the bobbin 10, the bobbin 10 does not rotate, and the small diameter portion 44 of the center pin 40 has almost no gap in the hole 11 of the bobbin 10. Since they are fitted together, the bobbin 10 is accurately positioned and held by the bobbin holding portion with little displacement of the center position. Therefore, the bobbin 10 can be easily wound around the winding shaft 12 by lowering the supply table 60 and then rotating the center pin 40 and the holder 30 about the axis A. After the winding is completed, the feed table 60 is moved up, the center pin 40 is moved forward, the bobbin 10 is returned to the feed table 60, and the center pin 40 is rotated by 45 ° in the opposite direction to the bobbin. Just pull out from 10. When pulling out the center pin 40 from the bobbin 10, the bobbin 10 is held by a stopper or the like not shown.
【００１０】なお、ホルダー30に突起34を、ボビン10に
凹部16を設けたが、これとは逆にボビン10側に突起を、
ホルダー30側に凹部をそれぞれ形成するようにしてもよ
い。また、Ａ軸を中心にセンターピン40に回転力を与え
るスプリングを設け、ボビン10に挿入する前にこのスプ
リングに抗してセンターピン40をあらかじめ４５°回動
しておき、ボビン10に挿入後に開放してスプリングの弾
性で回動することによって、係合部46でリブ14に切れ込
みを入れるようにしてもよい。このセンターピン40を回
動する角度は、４５°に限らずリブ14の数や位置に応じ
て決定されることは言うまでもない。Although the holder 30 is provided with the projection 34 and the bobbin 10 is provided with the concave portion 16, on the contrary, the projection is provided on the bobbin 10 side.
The recesses may be formed on the holder 30 side, respectively. In addition, a spring that applies a rotational force to the center pin 40 about the A axis is provided, and the center pin 40 is preliminarily rotated 45 ° against the spring before being inserted into the bobbin 10, and after the bobbin 10 is inserted. The rib 14 may be cut by the engaging portion 46 by opening and rotating by the elasticity of the spring. It goes without saying that the angle at which the center pin 40 is rotated is not limited to 45 ° and is determined according to the number and position of the ribs 14.
【００１１】[0011]
【発明の効果】本発明による自動巻線機のボビン保持方
法によれば、センターピンが変形することなく、長期に
わたって安定したボビン保持力が得られ、小型のボビン
にも容易に対応することができる。また、巻軸の孔が貫
通していないボビンにも適用できるばかりでなく、横方
向のスペースをとらない構造であり構成部品の動きが単
純なので、多数のボビン保持部を横に並べて配置し、多
連の自動巻線機を容易に構成できる効果もある。According to the bobbin holding method for an automatic winding machine of the present invention, a stable bobbin holding force can be obtained for a long period of time without the center pin being deformed, and a small bobbin can be easily accommodated. it can. Also, not only can it be applied to bobbins where the hole of the winding shaft does not penetrate, but because the structure does not take up space in the lateral direction and the movement of the constituent parts is simple, many bobbin holding parts are arranged side by side, There is also an effect that a multiple automatic winding machine can be easily configured.
【図１】 本発明のボビン保持部の動作説明図FIG. 1 is an operation explanatory view of a bobbin holding portion of the present invention.
【図２】 本発明のボビン保持部の動作説明図FIG. 2 is an operation explanatory view of the bobbin holding portion of the present invention.
【図３】 本発明のボビン保持部の動作説明図FIG. 3 is an operation explanatory view of the bobbin holding portion of the present invention.
【図４】 供給台に取付けたボビンの一部断面側面図FIG. 4 is a partial sectional side view of the bobbin attached to the supply base.
【図５】 同、正面図FIG. 5 is a front view of the same.
【図６】 ホルダーとセンターピンの要部の分解斜視図FIG. 6 is an exploded perspective view of essential parts of a holder and a center pin.
【図７】 ボビンの斜視図FIG. 7 is a perspective view of the bobbin.
【図８】 従来のボビン保持部の一部断面側面図FIG. 8 is a partial cross-sectional side view of a conventional bobbin holding portion.
10 ボビン 11 孔 12 巻軸 14 リブ 30 ホルダー 32 貫通孔 34 突起 40 センターピン 44 径小部 46 係合部 48 溝 50 スプリング 10 bobbin 11 hole 12 winding shaft 14 rib 30 holder 32 through hole 34 protrusion 40 center pin 44 small diameter portion 46 engaging portion 48 groove 50 spring
Claims (1)
を有するボビンに線材を巻回する自動巻線機のボビン保
持方法において、長手方向に沿った貫通孔を有しボビン
の巻軸に嵌合する突起または凹部が先端部に形成された
筒状のホルダーと、円柱状の径小部の前端に該径小部よ
りも直径が大きな係合部が形成され該係合部の周辺にボ
ビンのリブに対応する溝が形成されてホルダーの貫通孔
の中に挿入されたセンターピンとを具え、センターピン
が、ホルダーの貫通孔の中を長手方向の軸に沿って移動
自在で且つ該軸を中心にホルダーの中を回動自在で、ホ
ルダーに対して後方にスプリングで付勢されており、セ
ンターピンとホルダーが一体的に結合した状態で該軸を
中心に回転可能に自動巻線機のボビン保持部を構成し、
巻軸がホルダーの先端部に嵌合可能なボビンを、巻軸の
孔がセンターピンに対向するように配置し、係合部の溝
をリブの位置に合わせてホルダーから突出させたセンタ
ーピンを、ボビンの巻軸の孔の中に挿入し、該孔の奥に
係合部が達するまでセンターピンを前進させ、次いでセ
ンターピンを所定の角度回動して係合部によってリブに
切り込みを入れ、リブと係合部が係合した状態でセンタ
ーピンを後退させて、センターピンの係合部とホルダー
との間にボビンを挟んで保持することを特徴とする自動
巻線機のボビン保持方法。1. A bobbin holding method for an automatic winding machine, wherein a wire is wound on a bobbin having a winding shaft having a plurality of ribs formed on the inner wall of the hole, wherein the bobbin has a through hole extending in the longitudinal direction. A cylindrical holder having a protrusion or a recess formed at its tip end that fits on a shaft, and an engaging portion having a diameter larger than that of the small diameter portion is formed at the front end of the cylindrical small diameter portion. And a center pin having a groove corresponding to the rib of the bobbin formed on the periphery and inserted into the through hole of the holder, the center pin being movable in the through hole of the holder along the longitudinal axis and The holder is rotatable around the shaft and is urged by a spring to the rear of the holder. The center pin and the holder are integrally connected to each other so that they can rotate around the shaft. The bobbin holding part of the machine,
A bobbin that allows the winding shaft to fit in the tip of the holder is arranged so that the hole of the winding shaft faces the center pin, and the center pin that protrudes from the holder by aligning the groove of the engaging part with the rib position Insert the bobbin into the hole of the bobbin shaft, move the center pin forward until the engaging part reaches the back of the hole, and then rotate the center pin by a predetermined angle to make a notch in the rib by the engaging part. A bobbin holding method for an automatic winding machine, characterized in that the center pin is retracted with the rib and the engaging portion engaged, and the bobbin is held by sandwiching the bobbin between the engaging portion of the center pin and the holder. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5177506A JP2720277B2 (en) | 1993-06-25 | 1993-06-25 | Bobbin holding method of automatic winding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5177506A JP2720277B2 (en) | 1993-06-25 | 1993-06-25 | Bobbin holding method of automatic winding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0714734A true JPH0714734A (en) | 1995-01-17 |
| JP2720277B2 JP2720277B2 (en) | 1998-03-04 |
Family
ID=16032102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5177506A Expired - Lifetime JP2720277B2 (en) | 1993-06-25 | 1993-06-25 | Bobbin holding method of automatic winding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2720277B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0714735A (en) * | 1993-06-25 | 1995-01-17 | Toko Inc | Bobbin holding part and bobbin holding method for automatic winding machine |
| EP0984463A4 (en) * | 1997-05-23 | 2001-03-07 | Hitachi Ltd | Ignition coil unit for engine and engine provided with plastic head cover |
| JP2008187878A (en) * | 2007-01-31 | 2008-08-14 | Nippon Seimitsu Sokki Kk | Coil bobbin for small electric actuator, and method of manufacturing small electric actuator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0714735A (en) * | 1993-06-25 | 1995-01-17 | Toko Inc | Bobbin holding part and bobbin holding method for automatic winding machine |
-
1993
- 1993-06-25 JP JP5177506A patent/JP2720277B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0714735A (en) * | 1993-06-25 | 1995-01-17 | Toko Inc | Bobbin holding part and bobbin holding method for automatic winding machine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0714735A (en) * | 1993-06-25 | 1995-01-17 | Toko Inc | Bobbin holding part and bobbin holding method for automatic winding machine |
| JP2720276B2 (en) * | 1993-06-25 | 1998-03-04 | 東光株式会社 | Bobbin holding part of automatic winding machine and bobbin holding method |
| EP0984463A4 (en) * | 1997-05-23 | 2001-03-07 | Hitachi Ltd | Ignition coil unit for engine and engine provided with plastic head cover |
| EP1220244A3 (en) * | 1997-05-23 | 2002-08-28 | Hitachi, Ltd. | Ignition coil for use in engine and engine having plastic cylinder head cover |
| US6571784B2 (en) | 1997-05-23 | 2003-06-03 | Hitachi, Ltd. | Ignition coil for use in engine and engine having plastic cylinder head cover |
| JP2008187878A (en) * | 2007-01-31 | 2008-08-14 | Nippon Seimitsu Sokki Kk | Coil bobbin for small electric actuator, and method of manufacturing small electric actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2720277B2 (en) | 1998-03-04 |
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