JP2537780B2 - Coil bobbin - Google Patents
Coil bobbinInfo
- Publication number
- JP2537780B2 JP2537780B2 JP60154605A JP15460585A JP2537780B2 JP 2537780 B2 JP2537780 B2 JP 2537780B2 JP 60154605 A JP60154605 A JP 60154605A JP 15460585 A JP15460585 A JP 15460585A JP 2537780 B2 JP2537780 B2 JP 2537780B2
- Authority
- JP
- Japan
- Prior art keywords
- core frame
- coil bobbin
- side wall
- core
- thickness
- 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 - Lifetime
Links
Landscapes
- Details Of Television Scanning (AREA)
- Coils Or Transformers For Communication (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明はカラーテレビジョン受像機に使用するフラ
イバックトランス（以下FBTと記す）のコイルボビンに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil bobbin of a flyback transformer (hereinafter referred to as FBT) used in a color television receiver.
従来の技術 近年、電子部位の小型化が要求される中でFBTも小型
軽量化を追求してきた。このような動向の中で、従来の
FBTのコイルボビンは第２図のような構造をとってき
た。2. Description of the Related Art In recent years, with the demand for miniaturization of electronic parts, FBT has also pursued miniaturization and weight reduction. In this trend,
The coil bobbin of FBT has taken the structure shown in FIG.
すなわち、フェライトコアを保持固定する均一な厚さ
のコア枠２と、コア枠２に端子台リブ８で固定され、端
子ピン３を挿入する端子ピン挿入穴５を有する端子台４
と、一次または二次巻線を巻くための巻線溝６により構
成されている。That is, the core frame 2 having a uniform thickness for holding and fixing the ferrite core, and the terminal block 4 having the terminal pin insertion holes 5 fixed to the core frame 2 by the terminal block ribs 8 for inserting the terminal pins 3 therein.
And a winding groove 6 for winding a primary or secondary winding.
このような構成のコイルボビンにおいて、端子ピン３
に自動巻線機で巻線端末を巻きつけるのであるが、FBT
の小型化追求のため、コア枠２と巻線ガイド柱12までの
距離は、巻線機ノズル10が通過する最小寸法で設計され
るので、コア枠２の側壁は容易に厚くできない。In the coil bobbin having such a configuration, the terminal pin 3
The winding terminal is wound on the
In order to reduce the size of the core frame 2, the distance between the core frame 2 and the winding guide column 12 is designed to be the minimum dimension through which the winding machine nozzle 10 passes, so the side wall of the core frame 2 cannot be easily thickened.
発明が解決しようとする問題点 しかし、このような構造のコイルボビンでは、樹脂成
形時に発生する歪応力により成形後の形状は第３図のよ
うに変形し、成形条件、あるいは使用時の温度条件によ
って異なり、同一成形ロットによっても異なる。それ故
に、端子ピン３を端子台４に挿入するとき、予め自動機
械で設定した端子ピン挿入軌道から端子ピン挿入穴５が
ズレるため、端子ピン３が挿入穴周辺に当たり挿入でき
なかったり、端子ピン３が湾曲したり、端子台リブ８が
折れたりするという３点の問題がある。Problems to be Solved by the Invention However, in the coil bobbin having such a structure, the shape after molding is deformed as shown in FIG. 3 due to the strain stress generated at the time of resin molding, and depending on molding conditions or temperature conditions during use. Different, it also depends on the same molding lot. Therefore, when the terminal pin 3 is inserted into the terminal block 4, the terminal pin insertion hole 5 deviates from the terminal pin insertion track previously set by the automatic machine, so that the terminal pin 3 cannot be inserted because it hits the periphery of the insertion hole. 3 is curved and the terminal block ribs 8 are broken, which are three problems.
また、コア枠２が内側に倒れ込み、コア枠の巾寸法Ｂ
がフェライトコアの巾寸法Ａより小さくなるため、フェ
ライトコアの挿入性が著しく悪くなるという問題があ
る。In addition, the core frame 2 falls inward, and the width B of the core frame is
Is smaller than the width A of the ferrite core, there is a problem that the insertability of the ferrite core is significantly deteriorated.
問題点を解決するための手段 前記問題点を解決する本発明の技術的手段は、樹脂成
形時に変形するコア枠の側壁の下方の部分の厚み及びコ
ア枠の底面の厚みの双方を、コア枠の側壁の上方の部分
の厚みより厚くしたことである。MEANS FOR SOLVING THE PROBLEMS Technical means of the present invention for solving the above-mentioned problems is that both the thickness of the lower portion of the side wall of the core frame and the thickness of the bottom surface of the core frame which are deformed at the time of resin molding, It is made thicker than the thickness of the upper portion of the side wall.
作 用 上述した技術的手段により、樹脂を型に入れた後冷却
・固化する際に、肉厚が厚いコア枠の下方部分の略中央
部及び側壁下方の略コーナー部分のみ固化が遅れ、この
残された部分が固化する際の収縮により、コア枠の側壁
を外側へ倒す方向の応力を発生させることができる。When the resin is put into the mold and then cooled and solidified by the above-mentioned technical means, the solidification is delayed only in the substantially central portion of the lower portion of the core frame having a large wall thickness and the substantially corner portion of the lower side wall. Due to the contraction of the solidified portion when it solidifies, it is possible to generate stress in the direction in which the side wall of the core frame is tilted outward.
この応力を、樹脂成形時にコア枠を内側に倒す方向に
作用する変形応力と相殺させることにより、変形が極め
て少ないコイルボビンが得られることになる。By canceling this stress with the deformation stress acting in the direction of inclining the core frame during resin molding, a coil bobbin with extremely small deformation can be obtained.
実施例 以下、本発明の実施例を添付図面にもとづいて説明す
る。Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図a,bにおいて、２はコア枠でフェライトコアを
保持固定する。４は端子台で、端子ピン挿入穴５とガス
抜穴７が設けられており、この端子ピン挿入穴５にはコ
イルボビン成形後、端子ピン３が挿入される。また端子
台４は端子台リブ８によりコア枠２の端子台４側の側壁
の厚くした部分に固定される。In FIGS. 1a and 1b, 2 is a core frame for holding and fixing a ferrite core. A terminal block 4 is provided with a terminal pin insertion hole 5 and a gas vent hole 7. The terminal pin 3 is inserted into the terminal pin insertion hole 5 after forming a coil bobbin. The terminal block 4 is fixed to the thickened portion of the side wall of the core frame 2 on the terminal block 4 side by the terminal block rib 8.
このコア枠の側壁を厚くした部分は、樹脂成形時の歪
応力によるコア枠２の変形をおさえ、それにより端子ピ
ン挿入穴の位置ズレを少なくし、自動機械により端子ピ
ン挿入作業をスムーズにし、機械稼動率を向上させるこ
とができる。さらにコア枠の変形がなくなることから、
フェライトコア装着の作業性も向上する。The thickened portion of the side wall of the core frame suppresses the deformation of the core frame 2 due to the strain stress at the time of resin molding, thereby reducing the positional deviation of the terminal pin insertion hole and smoothing the terminal pin insertion work by an automatic machine. The machine operating rate can be improved. Furthermore, since the core frame will not be deformed,
Workability of installing the ferrite core is also improved.
発明の効果 本発明によれば樹脂成形後のコイルボビン形状変化を
解消し、コイルボビンに端子ピンを挿入する際の不良数
を削減することができ歩留が向上する。さらに作業性が
改善され自動機械の稼動率が向上することから工数削減
ができ、今後のFBTの完全なる自動製造化においても大
きな効果を奏するものである。EFFECTS OF THE INVENTION According to the present invention, it is possible to eliminate the change in the shape of the coil bobbin after resin molding, reduce the number of defects when inserting the terminal pin into the coil bobbin, and improve the yield. Furthermore, the workability is improved and the operation rate of the automatic machine is improved, so the man-hours can be reduced, and it will have a great effect on the complete automatic production of FBT in the future.
第１図ａは本発明の一実施例を示すコイルボビンの平面
図、第１図ｂは同コイルボビンの半載正面図、第２図ａ
は従来のコイルボビンを示す平面図、第２図ｂは同コイ
ルボビンの半載正面図、第３図は従来のコイルボビンの
変形状態を示す正面図である。 ２……コア枠、３……端子ピン、４……端子台、５……
端子ピン挿入穴、８……端子台リブ、13……巻線用ツ
バ。FIG. 1a is a plan view of a coil bobbin showing an embodiment of the present invention, FIG. 1b is a half-mounted front view of the coil bobbin, and FIG.
2 is a plan view showing a conventional coil bobbin, FIG. 2b is a semi-mounted front view of the same coil bobbin, and FIG. 3 is a front view showing a modified state of the conventional coil bobbin. 2 ... Core frame, 3 ... Terminal pins, 4 ... Terminal block, 5 ...
Terminal pin insertion hole, 8 …… Terminal block rib, 13 …… Winding collar.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野村 毅 門真市大字門真1006番地 松下電器産業 株式会社内 (56)参考文献 実開 昭56−67717（ＪＰ，Ｕ) 実開 昭53−107113（ＪＰ，Ｕ) 成形加工技術者のためのプラスチック 物性入門（昭和54年12月20日，８版，日 刊工業新聞社発行）122−123頁 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Nomura, Kadoma City, 1006 Kadoma, Matsushita Electric Industrial Co., Ltd. (56) References: 56-67717 (JP, U) , U) Introduction to plastic physical properties for molding engineers (Dec. 20, 1979, 8th edition, published by Nikkan Kogyo Shimbun), pages 122-123.
Claims (1)
円筒状の筒と、 前記筒の上端に設けられ、前記筒の中空部分との連通部
を有し、前記筒とともにフェライトコアを保持・固定す
るコア枠と、 前記コア枠の側壁の外側下方部分から放射状に突出して
設けられたリブを介して前記コア枠に固定され、端子ピ
ンを保持する端子台とを備えたコイルボビンにおいて、 前記コア枠の側壁の下方の部分の厚み及び前記コア枠の
底面の厚みの双方を、前記コア枠の側壁の上方の部分の
厚みより厚くしたことを特徴とするコイルボビン。1. A hollow cylindrical tube having a plurality of flanges for winding provided on the outer periphery thereof, and a communication section provided at the upper end of the tube for communicating with the hollow portion of the tube, and the ferrite together with the tube. A coil bobbin provided with a core frame for holding and fixing the core, and a terminal block fixed to the core frame via ribs provided so as to radially project from an outer lower portion of a side wall of the core frame and holding terminal pins. The coil bobbin according to claim 1, wherein both the thickness of the lower portion of the side wall of the core frame and the thickness of the bottom surface of the core frame are made thicker than the thickness of the upper portion of the side wall of the core frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60154605A JP2537780B2 (en) | 1985-07-12 | 1985-07-12 | Coil bobbin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60154605A JP2537780B2 (en) | 1985-07-12 | 1985-07-12 | Coil bobbin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6215807A JPS6215807A (en) | 1987-01-24 |
| JP2537780B2 true JP2537780B2 (en) | 1996-09-25 |
Family
ID=15587832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60154605A Expired - Lifetime JP2537780B2 (en) | 1985-07-12 | 1985-07-12 | Coil bobbin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2537780B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4835123B2 (en) * | 2005-11-29 | 2011-12-14 | Ｊｆｅスチール株式会社 | Turning table for thick plate rolling mill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57917U (en) * | 1980-05-30 | 1982-01-06 |
-
1985
- 1985-07-12 JP JP60154605A patent/JP2537780B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 成形加工技術者のためのプラスチック物性入門（昭和５４年１２月２０日，８版，日刊工業新聞社発行）１２２−１２３頁 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6215807A (en) | 1987-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |