JP2599416B2 - Manufacturing method of small transformer - Google Patents
Manufacturing method of small transformerInfo
- Publication number
- JP2599416B2 JP2599416B2 JP63052832A JP5283288A JP2599416B2 JP 2599416 B2 JP2599416 B2 JP 2599416B2 JP 63052832 A JP63052832 A JP 63052832A JP 5283288 A JP5283288 A JP 5283288A JP 2599416 B2 JP2599416 B2 JP 2599416B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- plate
- shaped
- bobbin
- winding
- 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
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、各種の映像機器、産業機器などに使用する
小形トランスの製造方法に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a small transformer used for various video equipment, industrial equipment, and the like.
従来の技術 従来の小形トランスの製造方法は、第８図（ａ）に示
すようにリードフレーム１に板状端子２をプレス加工に
より形成し、その板状端子２部に樹脂によりツバ付ボビ
ン３と端子板４を一体成形し、リードフレーム１より板
状端子２部を切断し、ツバ付ボビン３に巻線を施し、巻
線の先端は、板状端子２に巻付け、半田付け等により接
続し、ツバ付ボビン部３および端子板部４にはフェライ
トコアを組込み、それに外装を樹脂成形で施して行って
いた。2. Description of the Related Art As shown in FIG. 8 (a), a conventional method for manufacturing a small transformer is to form a plate-like terminal 2 on a lead frame 1 by pressing, and to form a flanged bobbin 3 on a portion of the plate-like terminal 2 with resin. And the terminal plate 4 are integrally formed, a plate-shaped terminal 2 is cut from the lead frame 1, a winding is applied to the flanged bobbin 3, and the end of the winding is wound around the plate-shaped terminal 2 and soldered. The ferrite core is incorporated in the bobbin portion 3 with a flange and the terminal plate portion 4 and the exterior is formed by resin molding.
発明が解決しようとする課題 上記の従来の製造方法では、ツバ付ボビン３の成形に
は、第８図（ｂ）に示す上型3a、下型3b、スライド型3c
よりなる３方向抜き型の金型を必要とするため複雑な金
型となり成形時間も長くなりコスト高となる。また、矢
印は金型の抜き方向である。また板状端子２に巻線の引
出線を巻付けるには、リードフレーム１より板状端子２
部を切断しなければ巻付けられない。したがって巻付け
作業から半田付け、フェライトコアの組込み、外装の樹
脂成形の各工程が個別となり、一貫した機械化工程がで
きず、量産性に欠けるものとなっていた。Problems to be Solved by the Invention In the above-described conventional manufacturing method, the upper die 3a, the lower die 3b, and the slide die 3c shown in FIG.
Since a three-way punching die is required, a complicated die is required, the molding time is increased, and the cost is increased. The arrow indicates the direction in which the mold is removed. In order to wind the lead wire of the winding around the plate-like terminal 2, the plate-like terminal 2
It cannot be wound unless the part is cut. Therefore, the steps from the winding operation to the soldering, the incorporation of the ferrite core, and the resin molding of the exterior become individual, and a consistent mechanization step cannot be performed, resulting in lack of mass productivity.
課題を解決するための手段 上記課題を解決するために、本発明はリードフレーム
に一端が自由端となる先端部を有する板状端子をプレス
加工により形成し、この板状端子とこの板状端子の上記
先端部が突出する上下に貫通した透孔を有する２つの端
子保持部と上記端子保持部が一端に設けられ、上記端子
保持部間の垂直上方に位置する他端にツバを有するＴ字
型ツバ付ボビンとを樹脂により一体形成し、その後板状
端子の上記先端部をＬ字型に折曲してＬ字型端子を形成
した後、上記Ｔ字型ツバ付ボビンに巻線を施し、巻線の
引出線を上記Ｌ字型端子に巻き付けて半田等により接続
するとともに、上記Ｔ字型ツバ付ボビンおよび端子保持
部にフェライトコアを組込んで後、リードフレームから
板状端子を切離するものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention forms a plate-shaped terminal having a leading end having a free end on a lead frame by press working, and forms the plate-shaped terminal and the plate-shaped terminal. A T-shape in which two terminal holding portions having vertically penetrating through holes from which the distal end portions protrude and the terminal holding portion are provided at one end, and a brim is provided at the other end located vertically above between the terminal holding portions. After forming the L-shaped terminal by bending the tip of the plate-like terminal into an L-shape, the winding is applied to the T-shaped bobbin. The lead wire of the winding is wound around the L-shaped terminal and connected by soldering or the like. After the ferrite core is assembled in the T-shaped bobbin with a flange and the terminal holding portion, the plate-shaped terminal is cut from the lead frame. To release.
作用 板状端子とこの板状端子の先端部が突出する上下に貫
通した透孔を有する２つの端子保持部と上記端子保持部
が一端に設けられ、上記端子保持部間の垂直上方に位置
する他端にツバを有するＴ字型ツバ付ボビンとを樹脂に
より一体形成する方法であるため、２方向抜金型で可能
である。また、その後板状端子をＬ字型に折曲するた
め、Ｔ字型ツバ付ボビンに巻線を施し巻線の引出線を巻
付けるには、リードフレームより板状端子を切断しなく
ても、それが可能である。さらに半田付け等の接続およ
びフェライトコアの組込み、樹脂成形が一貫した機械化
製造工程で行えるため、安価にして量産性に富む製造方
法とすることができる。A plate-like terminal, two terminal holding parts having a vertically penetrating through-hole through which a tip end of the plate-like terminal protrudes, and the terminal holding part are provided at one end, and are located vertically above the terminal holding part. Since this is a method in which a T-shaped bobbin with a brim having a brim at the other end is integrally formed of resin, a two-way punching die is possible. Further, since the plate-shaped terminal is bent into an L-shape thereafter, the winding is performed on the T-shaped bobbin with the collar and the lead wire of the winding is wound, without cutting the plate-shaped terminal from the lead frame. , It is possible. Furthermore, since connection such as soldering, incorporation of a ferrite core, and resin molding can be performed in a consistent mechanized manufacturing process, a manufacturing method that is inexpensive and has high mass productivity can be achieved.
実施例 以下本発明の一実施例を図面を用いて説明する。第１
図（ａ）は、板状端子にＴ字型ツバ付ボビンと端子保持
部を一体成形した斜視図で、第１図（ｂ）は上記Ｔ字型
ツバ付ボビンの斜視図、第２図は、板状端子をＬ字型に
成形した斜視図で、第３図は、第２図のボビンに巻線お
よびＬ字型端子に巻付けをした斜視図で、第４図は、第
３図にフェライトコアを組込んだ斜視図で、第５図は、
第４図に外装を樹脂成形した斜視図、第６図、第７図は
リードフレームから板状端子を切断し、板状端子を所定
形状に加工した小形トランスの斜視図である。Embodiment An embodiment of the present invention will be described below with reference to the drawings. First
FIG. 1 (a) is a perspective view in which a T-shaped flanged bobbin and a terminal holding portion are integrally formed on a plate-like terminal, FIG. 1 (b) is a perspective view of the T-shaped flanged bobbin, and FIG. FIG. 3 is a perspective view in which a plate-shaped terminal is formed into an L-shape, FIG. 3 is a perspective view in which a bobbin of FIG. 2 is wound around an L-shaped terminal, and FIG. FIG. 5 is a perspective view in which a ferrite core is incorporated.
FIG. 4 is a perspective view in which an exterior is resin-molded, and FIGS. 6 and 7 are perspective views of a small transformer in which a plate-like terminal is cut from a lead frame and the plate-like terminal is processed into a predetermined shape.
まず、第１図に示すように金属フープ材をプレス加工
してリードフレーム11に一定の間隔をもって複数本の板
状端子12を双方向からそれぞれ突出するように設け、こ
のそれぞれの板状端子12の開放先端部に端子保持部13が
互いに平行となるように、しかもこの端子保持部13間の
中央部に上部に端子保持部13と平行となるように両側に
突出したツバ14をもつ断面Ｔ字型のボビン15（以下、Ｔ
字型ツバ付ボビンという）を樹脂成形により同時に形成
する。即ち、ツバ14の幅は端子保持部13間の間隔と同じ
か、もしくは狭い（従って、ツバ14の垂直下には端子保
持部13は削除されて存在しない。言い換えると、ツバ14
は端子保持部間の垂直上方のツバ付ボビン15の端部に設
けられていることになる。）形状となっている。なお、
板状端子12の先端は端子保持部13の上下に貫通した透孔
16内に突出させておく。First, as shown in FIG. 1, a metal hoop material is pressed to provide a plurality of plate terminals 12 on a lead frame 11 at predetermined intervals so as to protrude from both directions. A cross section T having a flange 14 protruding on both sides so that the terminal holding portions 13 are parallel to each other at the open front end thereof and at the center between the terminal holding portions 13 so as to be parallel to the terminal holding portions 13 at the top. -Shaped bobbin 15 (hereinafter, T
(Referred to as a bobbin with a flange) is simultaneously formed by resin molding. That is, the width of the collar 14 is equal to or smaller than the interval between the terminal holders 13 (therefore, the terminal holder 13 is not removed vertically below the collar 14; in other words, the collar 14 is not present).
Is provided at the end of the flanged bobbin 15 vertically above the terminal holding portion. ) Shape. In addition,
The tip of the plate-like terminal 12 is a through hole that penetrates above and below the terminal holder 13.
Make it protrude into 16.
次に、第２図に示すように端子保持部13の透孔16内に
突出した板状端子12の先端をＬ字状に折曲して端子保持
部13の上面に突出させ、この状態で第３図に示すように
Ｔ字型ツバ付ボビン15に巻線17を巻回する。このとき、
巻線17の引出線18は上記Ｌ字状に折曲した板状端子12の
Ｌ字状の折曲部に巻付ける。Next, as shown in FIG. 2, the tip of the plate-like terminal 12 protruding into the through hole 16 of the terminal holding portion 13 is bent into an L-shape to project on the upper surface of the terminal holding portion 13, and in this state, As shown in FIG. 3, a winding 17 is wound around a bobbin 15 with a T-shaped collar. At this time,
The lead 18 of the winding 17 is wound around the L-shaped bent portion of the plate-shaped terminal 12 bent in the L-shape.
この全ての引出線18の板状端子12への巻付けが終了し
た時点で巻付部を半田付けにより接続する。When the winding of all the lead wires 18 around the plate-like terminal 12 is completed, the winding portions are connected by soldering.
その後、第４図に示すようにEE型のフェライトコア19
を上下から組込み、成形金型にセットして外装20を樹脂
成形にて第５図のように形成する。Thereafter, as shown in FIG.
Are assembled from above and below, and are set in a molding die to form the exterior 20 by resin molding as shown in FIG.
その後、リードフレーム11から板状端子12を所定の長
さに切断し、第６図に示すように下方にコ字状に板状端
子12を折曲加工したり、第７図に示すようにＬ字状に板
状端子12を折曲加工して小形トランスとする。Thereafter, the plate-like terminal 12 is cut into a predetermined length from the lead frame 11, and the plate-like terminal 12 is bent downward in a U-shape as shown in FIG. 6, or as shown in FIG. The L-shaped plate-shaped terminal 12 is bent to form a small transformer.
なお、Ｔ字型ツバ付ボビンのＡ方向からの断面は第１
図（ｂ）のようになっているので、成形金型は上型Ｄ、
下型Ｅのごとく形成され、上下矢印２方向への抜型でＴ
字型ツバ付ボビンは成形できるものである。The cross section of the T-shaped bobbin with a collar from the A direction is the first.
As shown in FIG. (B), the molding die is the upper die D,
It is formed like the lower mold E, and T
The bobbin with a brim can be formed.
発明の効果 以上のように本発明は、Ｔ字型ツバ付ボビンのツバを
上記Ｔ字型ツバ付ボビンの下端に設けられた２つの端子
保持部間の垂直上方に位置させるとともに、上記端子保
持部に上下に貫通して設けた透孔内に板状端子の先端部
を突出させて、上記Ｔ字型ツバ付ボビンと端子保持部を
一体に成形する方法であるので、上下２方向への抜き金
型で一体成形が可能であり、かつ、その後、板状端子の
先端をＬ字状に成形するため、巻線の引出線の巻付け
が、リードフレームより板状端子を切断する必要がなく
行え、さらに半田付け等の接続工程、フェライトコアの
組込み工程までの工程が、一貫した機械化工程で可能で
ある。よって無人化製造工程に適し、量産性に優れ、ボ
ビン成形の金型も容易である。Effect of the Invention As described above, the present invention positions the collar of the T-shaped collar with the collar vertically above the two terminal holders provided at the lower end of the T-shaped collar with the terminal holder. In this method, the T-shaped bobbin with a flange and the terminal holding portion are integrally formed by projecting the tip end of the plate-like terminal into a through hole provided vertically penetrating the portion. It is possible to integrally mold with a punching die, and then form the L-shaped tip of the plate-shaped terminal. Therefore, it is necessary to cut the plate-shaped terminal from the lead frame by winding the lead wire of the winding. The process up to the connection process such as soldering and the process of assembling the ferrite core can be performed by a consistent mechanization process. Therefore, it is suitable for an unmanned manufacturing process, has excellent mass productivity, and is easy to mold for bobbin molding.
第１図（ａ）は、本発明の小形トランスの製造方法の要
部である板状端子にＴ字型ツバ付ボビンと端子を一体成
形した斜視図であり、第１図（ｂ）は、同成形の状態を
説明するための断面概念図であり、第２図は、同要部で
ある板状端子をＬ字型に成形した斜視図であり、第３図
は、第２図のボビンに巻線およびＬ字型端子に巻付けを
した斜視図であり、第４図は、第３図にフェライトコア
を組込んだ斜視図であり、第５図は、第４図に外装を樹
脂成形した斜視図であり、第６図、第７図はリードフレ
ームから板状端子を切断し、板状端子を所定形状に加工
した小形トランスの斜視図であり、第８図（ａ）は、従
来の小形トランスの製造方法の要部であるツバ付ボビン
の斜視図であり、第８図（ｂ）は、同成形の状態を説明
するための断面概念図である。 11……リードフレーム、12……板状端子、13……端子保
持部、14……ツバ、15……ボビン、16……透孔、17……
巻線、18……引出線、19……フェライトコア、20……外
装。FIG. 1A is a perspective view of a plate-shaped terminal, which is a main part of the method for manufacturing a small transformer according to the present invention, in which a bobbin with a T-shaped collar and a terminal are integrally formed. FIG. FIG. 2 is a conceptual sectional view for explaining a state of the molding, FIG. 2 is a perspective view in which a plate-shaped terminal, which is the main part, is molded into an L-shape, and FIG. 3 is a bobbin of FIG. FIG. 4 is a perspective view in which a winding is wound around an L-shaped terminal, FIG. 4 is a perspective view in which a ferrite core is incorporated in FIG. 3, and FIG. FIGS. 6 and 7 are perspective views of a small transformer in which a plate-shaped terminal is cut from a lead frame and the plate-shaped terminal is processed into a predetermined shape. FIG. FIG. 8 (b) is a perspective view of a flanged bobbin, which is a main part of a conventional method for manufacturing a small transformer, and FIG. It is a diagram. 11 ... lead frame, 12 ... plate terminal, 13 ... terminal holding part, 14 ... collar, 15 ... bobbin, 16 ... through-hole, 17 ...
Winding, 18 Lead wire, 19 Ferrite core, 20 Exterior.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−224210（ＪＰ，Ａ) 特開 昭60−158610（ＪＰ，Ａ) 実開 昭58−127611（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-224210 (JP, A) JP-A-60-158610 (JP, A)
Claims (1)
部を有する板状端子をプレス加工により形成し、この板
状端子とこの板状端子の上記先端部が突出する上下に貫
通した透孔を有する２つの端子保持部と上記端子保持部
が一端に設けられ、上記端子保持部間の垂直上方に位置
する他端にツバを有するＴ字型ツバ付ボビンとを樹脂に
より一体形成し、その後板状端子の上記先端部をＬ字型
に折曲してＬ字型端子を形成した後、上記Ｔ字型ツバ付
ボビンに巻線を施し、巻線の引出線を上記Ｌ字型端子に
巻き付けて半田等により接続するとともに、上記Ｔ字型
ツバ付ボビンおよび端子保持部にフェライトコアを組込
んで後、上記リードフレームから板状端子を切離してな
る小形トランスの製造方法。A plate-like terminal having a free end at one end thereof is formed on a lead frame by press working, and the plate-like terminal and a through-hole vertically penetrating the projecting end of the plate-like terminal. And a T-shaped bobbin with a flange provided at one end with the terminal holding portion and the terminal holding portion provided at one end and having a brim at the other end located vertically above between the terminal holding portions. After forming the L-shaped terminal by bending the tip end of the plate-shaped terminal into an L-shape, winding is performed on the bobbin with the T-shape and the lead wire of the winding is connected to the L-shaped terminal. A method for manufacturing a small transformer, comprising winding and connecting with a solder or the like, incorporating a ferrite core into the bobbin with T-shaped collar and the terminal holding portion, and then separating the plate-shaped terminal from the lead frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63052832A JP2599416B2 (en) | 1988-03-07 | 1988-03-07 | Manufacturing method of small transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63052832A JP2599416B2 (en) | 1988-03-07 | 1988-03-07 | Manufacturing method of small transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01226129A JPH01226129A (en) | 1989-09-08 |
| JP2599416B2 true JP2599416B2 (en) | 1997-04-09 |
Family
ID=12925817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63052832A Expired - Fee Related JP2599416B2 (en) | 1988-03-07 | 1988-03-07 | Manufacturing method of small transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2599416B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7140091B2 (en) * | 2000-03-30 | 2006-11-28 | Microspire S.A. | Manufacturing process for an inductive component |
| US9545902B2 (en) * | 2010-04-28 | 2017-01-17 | Nissin Kogyo Co., Ltd. | Connection structure for electrical component assembly, hydraulic pressure control apparatus, and method for producing electrically conductive member |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58127611U (en) * | 1982-02-23 | 1983-08-30 | ティーディーケイ株式会社 | Terminal board for transformer |
| JPS60158610A (en) * | 1984-01-27 | 1985-08-20 | Mitsumi Electric Co Ltd | Manufacture of high-frequency coil |
| JPS60224210A (en) * | 1984-04-20 | 1985-11-08 | Matsushita Electric Ind Co Ltd | Manufacture of transformer |
-
1988
- 1988-03-07 JP JP63052832A patent/JP2599416B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01226129A (en) | 1989-09-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |