JPH034506A - Enclosed type transformer - Google Patents
Enclosed type transformerInfo
- Publication number
- JPH034506A JPH034506A JP14048189A JP14048189A JPH034506A JP H034506 A JPH034506 A JP H034506A JP 14048189 A JP14048189 A JP 14048189A JP 14048189 A JP14048189 A JP 14048189A JP H034506 A JPH034506 A JP H034506A
- Authority
- JP
- Japan
- Prior art keywords
- bottom plate
- protective case
- transformer
- terminal
- case
- 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
- 230000001681 protective effect Effects 0.000 claims abstract description 32
- 238000000465 moulding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 5
- 239000000696 magnetic material Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005476 soldering 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
本発明はビデオカメラや電話器等に使用される小型のパ
ルストランスとして使用され、トランスの面実装化が可
能であることを要求される密閉型トランスに関するもの
である。[Detailed Description of the Invention] Industrial Application Field The present invention is used as a small pulse transformer used in video cameras, telephones, etc., and is a sealed type transformer that is required to be surface-mountable. It is related to.
従来の技術
近年、ビデオカメラや電話器等の各種電子機器の発展に
は目ざましいものかあシ、セットの小形軽量化に伴ない
チップ部品による面実装化、高密度実装化が図られてい
る。このようなセットの動きに対しあらゆる部品におい
て、面実装化の要望が高まってきている。BACKGROUND OF THE INVENTION In recent years, various electronic devices such as video cameras and telephones have made remarkable progress.As sets become smaller and lighter, surface mounting and high-density mounting using chip components are being attempted. Due to the movement of such sets, there is an increasing demand for surface mounting of all parts.
このような市場の要望に応えるためトランδでは安全性
に優れたケースタイプの密閉型トランスが採用されてい
る。To meet these market demands, the Tran δ uses a case-type sealed transformer with excellent safety.
この密閉型トランスを第４図から第６図に示す。This hermetic transformer is shown in FIGS. 4 to 6.
第４図は従来の密閉型トランスの断面図を示す。FIG. 4 shows a cross-sectional view of a conventional hermetic transformer.
両端に鍔５とこの鍔６部の一部に膨大部を形成して端子
部２としたコイルボビン１に巻線７を行うがこの時、巻
、ｗ！７のリード線の配線は配線端子４に配線する。次
にコイルボビン１に巻線後、コイルボビン１にフェライ
トコア等の磁性材である磁心６を挿入し磁心組立てを行
い、これを保護ケース８に挿入し、その後に底板１ｏを
挿入し完成する。この保護ケース８にはリブ９が設けら
れておシ、また底板１ｏの外周には段差１１が設けられ
ておシ、組立の際底板１０は保護ケース８の開口部を外
部に押し広げながら入シ段差１１がリブ９を通過後もと
に戻る構造となっている。このように底板１ｏは保護ケ
ース８の内部にあるため、トランスの基板へ実装する際
は基板との接触は保護ケース８と底板１０の両方となる
。Winding 7 is performed on the coil bobbin 1, which has a collar 5 at both ends and an enlarged part formed on a part of the collar 6 to form the terminal portion 2. At this time, the winding w! The lead wire 7 is wired to the wiring terminal 4. Next, after winding the coil bobbin 1, a magnetic core 6 made of a magnetic material such as a ferrite core is inserted into the coil bobbin 1 to assemble the magnetic core, which is then inserted into the protective case 8, and then the bottom plate 1o is inserted to complete the process. This protective case 8 is provided with ribs 9, and a step 11 is provided on the outer periphery of the bottom plate 1o. The structure is such that the step 11 returns to its original position after passing through the rib 9. As described above, since the bottom plate 1o is inside the protective case 8, both the protective case 8 and the bottom plate 10 come into contact with the board when mounting the transformer on the board.
第５図は従来の密閉型トランスの斜視図を示す。FIG. 5 shows a perspective view of a conventional hermetic transformer.
また第６図は従来の密閉型トランスの側面図を示す。こ
のように従来の密閉型トランスの構造では部品の精度及
び、組立て精度上、保護ケース８の底面と底板１０の底
面との間にスキ間Ｔを生じていた。Further, FIG. 6 shows a side view of a conventional closed type transformer. As described above, in the structure of the conventional hermetic transformer, a gap T is created between the bottom surface of the protective case 8 and the bottom surface of the bottom plate 10 due to the precision of parts and the precision of assembly.
発明が解決しようとする課題
従来の密閉型トランスでは保護ケース８と底板１０の嵌
合が保護ケース８の開口部の円周に設けたリブ９の中に
段差１１を設けた底板１ｏを押し込めるだけであシ、保
護ケース８と底板１０の固定が難しく、また、外部端子
３の底面と保護ケース８の底面及び底板１ｏの、底面と
３つの部品間でスキ間が生じてしまう。この密閉型トラ
ンスをプリント基板に実装した時にプリント基板とトラ
ンスの端子間、またはプリント基板と底板間等にスキ間
が生じることとなり端子の半田付不良やプリント基板と
トランスの接着不良等の問題が生じていた。Problems to be Solved by the Invention In the conventional sealed transformer, the protective case 8 and the bottom plate 10 can be fitted together by simply pushing the bottom plate 1o, which has a step 11, into a rib 9 provided on the circumference of the opening of the protective case 8. However, it is difficult to fix the protective case 8 and the bottom plate 10, and gaps occur between the bottom of the external terminal 3, the bottom of the protective case 8, and the bottom plate 1o. When this sealed transformer is mounted on a printed circuit board, gaps will be created between the terminals of the printed circuit board and the transformer, or between the printed circuit board and the bottom plate, resulting in problems such as poor soldering of the terminals and poor adhesion between the printed circuit board and the transformer. was occurring.
本発明は以上のような従来の欠点を除去し、保護ケース
と底板の嵌合を確実にし、面実装に適した密閉型トラン
スを提供しようとするものである。The present invention aims to eliminate the above-mentioned drawbacks of the conventional transformer, ensure the fit between the protective case and the bottom plate, and provide a sealed transformer suitable for surface mounting.
課題を解決するための手段
本発明は上記課題を解決するため、保護ケースが底板の
上に完全に位置する構造とし、また保護ケースの内面に
凹部を設け、かつ底板の一部に凸部を設けこの凸部と保
護ケースの凹部の嵌合を完全なものとした構成とするも
のである。Means for Solving the Problems In order to solve the above problems, the present invention has a structure in which the protective case is completely positioned on the bottom plate, a recess is provided on the inner surface of the protective case, and a convex portion is provided on a part of the bottom plate. The convex portion and the concave portion of the protective case are completely fitted.
作用
以上のように本発明は底板の上に保護ケースが位置する
ことにより、トランス本体と端子の底面のスキ間をなく
し、非常に精度の良く安定した密閉型トランスを提供で
きるものとなる。As described above, the present invention eliminates the gap between the transformer body and the bottom of the terminal by positioning the protective case on the bottom plate, making it possible to provide a highly accurate and stable sealed transformer.
実施例
以下本発明の一実施例について添付図面にもとづ−て説
明する。EXAMPLE An example of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の密閉型トランスの断面図である。両端
に鍔１１とこの鍔１１部の一部に膨大部を形成し外部端
子２１と配線端子２２を有する端子部１２を備えたコイ
ルポビン１３に、巻線１４を施し、この巻線１４のリー
ド朦は配、線端子２２に配朦される。巻線したコイルボ
ビン１３にフェライトコア等のＸＩ型などの磁性材によ
る磁心１６を挿入してトランス本体を組立てた後、トラ
ンス本体を保護ケース１６に挿入し底板１７を保護ケー
ス１６と嵌合し固定する。この時、保護ケース１６の開
口部は底板１７の大きさよフ小さくなってお勺、底板１
７の上に保護ケース１８が乗る構造となっている。従っ
て基板実装時に基板と接触する部分は底板１７と外部端
子２１のみとなる。嵌合は保護ケース１６の内面の開口
部の近くに凹部１８を設け、底板１７上は突起部１９を
設け、その突起部１９の上部に凸部２０を設け、これが
嵌合時に保護ケース１６の凹部１８に入る構造となって
いる。FIG. 1 is a sectional view of a sealed transformer according to the present invention. A winding 14 is applied to a coil pobbin 13 which has a flange 11 at both ends and a terminal portion 12 having an enlarged portion formed in a part of the flange 11 and has an external terminal 21 and a wiring terminal 22. is wired to the wire terminal 22. After assembling a transformer body by inserting a magnetic core 16 made of a magnetic material such as a type XI ferrite core into the wound coil bobbin 13, the transformer body is inserted into the protective case 16, and the bottom plate 17 is fitted into the protective case 16 and fixed. do. At this time, the opening of the protective case 16 becomes smaller than the size of the bottom plate 17.
A protective case 18 is placed on top of the protective case 7. Therefore, only the bottom plate 17 and the external terminals 21 come into contact with the board when mounted on the board. For fitting, a recess 18 is provided near the opening on the inner surface of the protective case 16, a protrusion 19 is provided on the bottom plate 17, and a protrusion 20 is provided on the top of the protrusion 19. It has a structure that enters the recess 18.
第２図は本発明の密閉型トランスの斜視図を示す。保護
ケース１６は底板１７の上に乗った構造となっている。FIG. 2 shows a perspective view of the hermetic transformer of the present invention. The protective case 16 has a structure in which it rests on a bottom plate 17.
第３図は本発明の密閉型トランスの側面図を示す。保護
ケース１６と底板１７は完全に嵌合されガタッキがなく
なるため外部端子２１と底板１７の底面とは完全に一致
する構造とすることが可能となる。FIG. 3 shows a side view of the hermetic transformer of the present invention. Since the protective case 16 and the bottom plate 17 are completely fitted and there is no backlash, it is possible to have a structure in which the external terminals 21 and the bottom surface of the bottom plate 17 completely match.
発明の効果
以上に説明したように１本発明は保護ケースを底板の上
に位置する構造とし、保護ケースと底板の嵌合を凹凸の
はめ込み構造とすることにより、トランス本体の底面と
外部端子の底面とのスキ間をなくすることができるため
、非常に精度よくプリント基板へ面実装することが可能
となり、実装時における端子浮き不良や、接着不良等の
問題を改善することが可能となった。Effects of the Invention As explained above, (1) the present invention has a structure in which the protective case is located on the bottom plate, and the fitting structure between the protective case and the bottom plate is a concave and convex fitting structure, so that the bottom surface of the transformer body and the external terminals are connected to each other. Since the gap between the bottom surface and the bottom surface can be eliminated, surface mounting on printed circuit boards can be performed with great precision, making it possible to improve problems such as floating terminals and poor adhesion during mounting. .
第１図は本発明の密閉型トランスの一実施例を示す断面
図、第２図は同密閉型トランスの斜視図、第３図は同側
面図、第４図は従来の密閉型トランスの断面図、第６図
は同密閉型トランスの斜視図、Ｍ６図は同側面図を示す
。
１１・・・鍔、１２・・・・・・端子部、１３・・・・
・・コイルボビン、１４・・・・・・巻線、１６・・・
・・・磁心、１６・・・・・・保護ケース、１７・・・
・・・底板、１８・・・・・・凹部、１９・・・・・・
突起部、２ｏ・・・・・・凸部、２１・・・・・・外部
端子、２２・・・・・・配線端子。Fig. 1 is a sectional view showing an embodiment of the sealed transformer of the present invention, Fig. 2 is a perspective view of the same sealed transformer, Fig. 3 is a side view of the same, and Fig. 4 is a cross section of a conventional sealed transformer. Figure 6 shows a perspective view of the same sealed transformer, and Figure M6 shows a side view of the same. 11...Brim, 12...Terminal section, 13...
...Coil bobbin, 14...Winding, 16...
...Magnetic core, 16...Protective case, 17...
...Bottom plate, 18...Concavity, 19...
Projection, 2o... Protrusion, 21... External terminal, 22... Wiring terminal.
Claims (1)
端子部とし、端子をインサート成形してなるコイルボビ
ンに巻線を施こし、磁心を組み込んでなるトランス本体
を、内面に凹部を設けた保護ケースに挿入し、凸部を設
けた底板をはめ込み、上記保護ケースの凹部に底板の凸
部と嵌合し、上記底板の大きさが上記保護ケースの開口
の大きさと同じか又はそれ以上の大きさであり保護ケー
スが上記底板の上に位置し、かつ底板の底面とトランス
本体の外部端子の底面が同一平面となるようにした密閉
型トランス。A flange is provided at both ends, an enlarged part is formed in a part of the flange to serve as a terminal part, a coil bobbin made by insert molding the terminal is wound, and a transformer body with a magnetic core is assembled with a recessed part on the inner surface. , insert the bottom plate with a convex part into the protective case, fit the convex part of the bottom plate into the concave part of the protective case, and make sure that the size of the bottom plate is the same as the opening size of the protective case or A sealed transformer that is larger in size, has a protective case located on the bottom plate, and has the bottom surface of the bottom plate and the bottom surface of the external terminals of the transformer body on the same plane.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14048189A JPH034506A (en) | 1989-06-01 | 1989-06-01 | Enclosed type transformer |
| US07/529,915 US5034854A (en) | 1989-06-01 | 1990-05-29 | Encased transformer |
| EP90110282A EP0400619B1 (en) | 1989-06-01 | 1990-05-30 | Method to produce an encased transformer |
| DE69011215T DE69011215T2 (en) | 1989-06-01 | 1990-05-30 | Process for manufacturing a covered transformer. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14048189A JPH034506A (en) | 1989-06-01 | 1989-06-01 | Enclosed type transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH034506A true JPH034506A (en) | 1991-01-10 |
| JPH0580126B2 JPH0580126B2 (en) | 1993-11-08 |
Family
ID=15269611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14048189A Granted JPH034506A (en) | 1989-06-01 | 1989-06-01 | Enclosed type transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034506A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04105510U (en) * | 1991-02-23 | 1992-09-10 | 太陽誘電株式会社 | Chip type chiyoke coil |
| JP2009194336A (en) * | 2008-02-18 | 2009-08-27 | Sumida Corporation | Magnetic device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390811A (en) * | 1986-10-06 | 1988-04-21 | Kijima:Kk | Small-sized winding component with case |
| JPS64393U (en) * | 1987-06-18 | 1989-01-05 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177972A (en) * | 1982-04-09 | 1983-10-18 | Ube Ind Ltd | Preparation of urea derivative |
-
1989
- 1989-06-01 JP JP14048189A patent/JPH034506A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390811A (en) * | 1986-10-06 | 1988-04-21 | Kijima:Kk | Small-sized winding component with case |
| JPS64393U (en) * | 1987-06-18 | 1989-01-05 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04105510U (en) * | 1991-02-23 | 1992-09-10 | 太陽誘電株式会社 | Chip type chiyoke coil |
| JP2009194336A (en) * | 2008-02-18 | 2009-08-27 | Sumida Corporation | Magnetic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0580126B2 (en) | 1993-11-08 |
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