JPH0553207U - Mold transformer - Google Patents
Mold transformerInfo
- Publication number
- JPH0553207U JPH0553207U JP10388791U JP10388791U JPH0553207U JP H0553207 U JPH0553207 U JP H0553207U JP 10388791 U JP10388791 U JP 10388791U JP 10388791 U JP10388791 U JP 10388791U JP H0553207 U JPH0553207 U JP H0553207U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic core
- transformer
- shield case
- coil
- coil bobbin
- 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.)
- Pending
Links
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
(57)【要約】
【目的】 トランスのシールド化と磁芯の組立てにおけ
る接着工程の省略により生産工程の簡略化と生産性の向
上を図り、組立工程の自動化生産設備の投資を低減し、
低コスト、高安全性、高品質のモールドトランスを提供
することを目的とする。
【構成】 導線１３を巻回したコイルボビンに磁芯１７
を挿入した後、磁芯１７の周囲のみ、または磁芯１７の
周囲とコイル上面を囲む箱型の形状で、磁芯挿入方向に
位置する側面の両端に脹輪部２０を設けたシールドケー
ス１９を被せノイズの影響を防止し、磁芯１７の固定も
可能とする。さらに、シールドケース１９を含むトラン
ス全体を、外装樹脂１８でモールド成型することで、露
出をなくし隣接する部品との絶縁ができユーザでの高密
度実装対応を可能とする。
(57) [Abstract] [Purpose] By simplifying the production process and improving productivity by shielding the transformer and omitting the bonding process in assembling the magnetic core, the investment in automated production equipment for the assembly process is reduced.
The purpose is to provide a low cost, high safety and high quality mold transformer. [Structure] A coil bobbin around which a conductor 13 is wound is attached to a magnetic core 17
After the insertion, the shield case 19 has a box-like shape that surrounds only the magnetic core 17 or around the magnetic core 17 and the coil upper surface, and in which expansion rings 20 are provided at both ends of the side faces located in the magnetic core insertion direction. The magnetic core 17 can be fixed by covering the magnetic core 17 with noise. Further, by molding the entire transformer including the shield case 19 with the exterior resin 18, it is possible to eliminate the exposure and insulate the adjacent components from each other, thereby enabling the user to handle high-density mounting.
Description
【０００１】[0001]
本考案は各種の映像機器、家電機器、音響機器、産業機器、通信機器等に使用 されるモールドトランスに関するものである。 The present invention relates to a mold transformer used in various video equipment, home appliances, audio equipment, industrial equipment, communication equipment and the like.
【０００２】[0002]
従来のトランスは図４に示すように構成されていた。すなわち、中央に貫通孔 ２を設け、その両端下部の下端鍔４にそれぞれ一体の巻付け配線用端子５と、ユ ーザで使用するユーザ端子６を植設した巻枠１に、銅線等の導線３を巻回し配線 用端子５に巻付けて配線したコイルボビンに、ＥＥ型またはＥＩ型の磁芯７を組 み合わせて挿入し、接着剤等により固定した後、ユーザ端子６のみを露出するよ うにプラスチック樹脂８でモールド成型したり、ケースに挿入し絶縁樹脂を充填 して形成したトランス本体に、箱型のシールドケース９を上面から被せ、シール ドタイプトランスを構成していた。 The conventional transformer is configured as shown in FIG. That is, a through hole 2 is provided at the center, and a winding wire terminal 5 and a user terminal 6 used for a user are integrally planted on the lower end collars 4 at the lower ends of both ends of the through hole 2. The EE type or EI type magnetic core 7 is combined and inserted into the coil bobbin wound around the wiring terminal 5 and wound around the wiring terminal 5 and fixed with an adhesive or the like, and then only the user terminal 6 is exposed. As described above, a box-shaped shield case 9 is covered from the top on a transformer body formed by molding with a plastic resin 8 or by being inserted into a case and filled with an insulating resin to form a shielded type transformer.
【０００３】[0003]
外部の輻射ノイズがトランスに誘導し回路に伝わる伝導ノイズ、あるいはトラ ンスから発生する漏洩磁束などの要因により回路に誤動作が生じた場合、従来の 技術では、トランス本体に箱型のシールドケース９を被せノイズの影響を抑えて いるが、組立て工数がかかると共に、ユーザにおいて部品を高密度実装する場合 、隣接する部品との絶縁を維持する必要があり、トランスの取付け位置が制限さ れ、部品の高密度実装化に支障をきたす結果となっている。 When malfunction occurs in the circuit due to factors such as conduction noise transmitted to the circuit when external radiation noise is induced in the transformer, or leakage magnetic flux generated from the transformer, in the conventional technology, the box-shaped shield case 9 is installed in the transformer body. Although it suppresses the effect of covering noise, it requires a lot of assembly man-hours, and when the user mounts the parts in high density, it is necessary to maintain the insulation from the adjacent parts. This results in a problem in high-density mounting.
【０００４】 また、従来のトランスでは、ＥＥ型またはＥＩ型の磁芯の固定は接着剤により 行っており、その硬化には２時間程度もの時間を必要とし、自動化設備の規模が 大きくなると共に組立て工数も多く、設備の投資効果が十分に引き出せない構造 となっている。Further, in the conventional transformer, the EE type or EI type magnetic core is fixed by an adhesive, and it takes about 2 hours to cure the magnetic core, and the scale of the automation equipment becomes large and the assembly is performed. There are many man-hours, and the structure is such that the investment effect of the equipment cannot be fully brought out.
【０００５】 本考案は上記従来の問題点を解決するもので、トランスのシールド化と、磁芯 の組立てにおける接着工程の省略により生産工程の簡略化と生産性の向上を図り 、組立工程の自動化生産設備の投資を低減し、低コスト、高安全性、高品質のモ ールドトランスを提供することを目的とする。The present invention solves the above-mentioned conventional problems, and simplifies the production process and improves the productivity by making the transformer shielded and omitting the bonding process in the assembly of the magnetic core, and the automation of the assembly process. The purpose is to reduce the investment of production equipment and to provide a low cost, high safety and high quality mold transformer.
【０００６】[0006]
上記課題を解決するための本考案の手段は、中央に貫通孔を設けた巻枠に導線 を巻回したコイルボビンと、このコイルボビンに組込まれるＥＥ型またはＥＩ型 の磁芯と、この磁芯の周囲とコイル上面を囲む箱型の形状で磁芯挿入方向の両側 面に対向する位置に磁芯を押圧固定する脹輪部を設けたシールドケースと、ユー ザで使用する端子部のみを露出しトランス全体をモールド成型により外装する外 装樹脂とにより構成するものである。 Means for Solving the Problems The means of the present invention for solving the above-mentioned problems are a coil bobbin in which a wire is wound around a winding frame having a through hole in the center, an EE type or EI type magnetic core incorporated in this coil bobbin, A box-like shape that encloses the surroundings and the top surface of the coil, has a shield case with expansion rings that press and fix the magnetic core at positions facing both sides in the magnetic core insertion direction, and exposes only the terminals used by the user. It is composed of an external resin that covers the entire transformer by molding.
【０００７】 また、上記シールドケースは、ケースの上面に穴をあけ、磁芯の周囲のみを囲 む形状とすることもできる。Further, the shield case may have a shape in which a hole is formed in the upper surface of the case and only the circumference of the magnetic core is surrounded.
【０００８】[0008]
以上のように導線を巻回したコイルボビンに磁芯を挿入し閉磁路を構成した後 、磁芯の周囲とコイル上面を囲む箱型の形状のシールドケースで囲むことにより 、自らが発生する漏洩磁束を抑えると共に、外部からの輻射ノイズの影響を皆無 とすることができる。 As described above, after the magnetic core is inserted into the coil bobbin around which the conducting wire is wound to form a closed magnetic circuit, the magnetic flux generated by itself is surrounded by a box-shaped shield case surrounding the magnetic core and the coil upper surface. It is possible to suppress the noise and eliminate the influence of radiation noise from the outside.
【０００９】 また、このシールドケースの磁芯挿入方向に位置する側面の両端に脹輪部を設 けることにより、組み込んだ磁芯に対し挿入方向よりストレスを加え、磁芯の固 定も可能とし、シールドケースを磁芯固定部品と共用でき、作業が困難な磁芯接 着工程を省略し、生産工程および作業の簡略化が図れる。Further, by providing expansion rings at both ends of the side surface of the shield case located in the magnetic core insertion direction, stress can be applied to the incorporated magnetic core from the insertion direction to fix the magnetic core. Since the shield case can be shared with the magnetic core fixing parts, the magnetic core attaching process, which is difficult to perform, can be omitted, and the production process and the work can be simplified.
【００１０】 さらに、シールドケースを含むトランス本体を、外装樹脂でモールド成型し、 シールドケースの露出を防止することで隣接する部品との絶縁を維持し、シール ドケースを取付けた場合の高密度実装の対応を可能とする。Further, the transformer main body including the shield case is molded with the exterior resin to prevent the shield case from being exposed to maintain the insulation between the adjacent components, and the high-density mounting in the case where the shield case is attached is performed. Enables correspondence.
【００１１】 なお、漏洩磁束や外部からの輻射ノイズの影響のレベルに応じ、シールドケー スの上面に穴をあけ、磁芯のみを囲む形状とすることで、例えばパーマロイ等の 高価な材料使用が必要な場合材料費の削減も可能である。In addition, depending on the level of influence of leakage magnetic flux or radiation noise from the outside, by forming a hole in the upper surface of the shield case and enclosing only the magnetic core, it is possible to use an expensive material such as permalloy. Material costs can be reduced if necessary.
【００１２】 以上の作用により、生産工程の簡略化と生産性の向上を図り、組立工程の自動 化生産設備の投資を低減し、低コスト、高安全性、高品質のモールドトランスを 実現することができる。[0012] With the above operation, the production process can be simplified and the productivity can be improved, the investment of the automated production equipment of the assembly process can be reduced, and the low cost, high safety and high quality mold transformer can be realized. You can
【００１３】[0013]
（実施例１） 以下、本考案の第一の実施例について図１，図２を参照して説明する。 (First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS.
【００１４】 図１において、中央に貫通孔１２を設け、その両端下部の下端鍔１４にそれぞ れ一体の巻付け配線用端子１５と、ユーザで使用するユーザ端子１６を植設した 巻枠１１に銅線等の導線１３を巻回し、配線用端子１５に巻付けて配線したコイ ルボビンに、ＥＥ型またはＥＩ型の磁芯１７を組み合わせて挿入し、図２に示す 磁芯１７の周囲とコイル上面を囲む箱型の形状で、磁芯１７の挿入方向の両側に 対応する磁芯接触面の中央部に、磁芯１７を両端から押圧する円形の脹輪部２０ を設けたシールドケース１９を上方より挿入し磁芯１７を固定した後、ユーザ端 子１６のみを露出するようにトランス全体を外装樹脂１８でモールド成型するこ とにより、シールドタイプのモールドトランスを構成している。In FIG. 1, a through hole 12 is provided in the center, and a winding wire terminal 15 and a user terminal 16 used by a user are integrally planted in a lower end flange 14 at the lower end of each end thereof. The conductor wire 13 such as a copper wire is wound around the wire, and the coil bobbin wound around the wiring terminal 15 is wired by inserting the EE-type or EI-type magnetic core 17 into the coil bobbin and surrounding the magnetic core 17 shown in FIG. A shield case 19 having a box-like shape surrounding the upper surface of the coil and provided with a circular expansion ring 20 for pressing the magnetic core 17 from both ends in the center of the magnetic core contact surface corresponding to both sides in the insertion direction of the magnetic core 17. After the above is inserted to fix the magnetic core 17, the entire transformer is molded with the exterior resin 18 so that only the user terminal 16 is exposed to form a shield type molded transformer.
【００１５】 尚、シールドケース１９の脹輪部２０の形状は円形に限らず楕円または長方形 等シールドケース１９の作成時、加工しやすいものであれば形状は問わない。ま た、位置も磁芯１７の挿入方向の両側磁芯接触面であれば中央部一ヵ所に限らず 複数個設けることもできる。The shape of the expansion ring portion 20 of the shield case 19 is not limited to a circular shape, and may be any shape such as an oval or a rectangle as long as it can be easily processed when the shield case 19 is manufactured. Further, the position is not limited to one central portion as long as it is a magnetic core contacting surface on both sides in the insertion direction of the magnetic core 17, and a plurality of positions may be provided.
【００１６】 （実施例２） 以下、本考案の第二の実施例について図３を参照に説明する。Second Embodiment Hereinafter, a second embodiment of the present invention will be described with reference to FIG.
【００１７】 第二の実施例は、第一の実施例で記載したシールドケースの形状の応用であり 、漏洩磁束や外部からの輻射ノイズのレベルが少ない場合や、特に磁芯１７のみ のシールドが必要な場合等、その影響度合いに応じ、シールドケース１９の上面 にコイル上部面だけをくり抜いた穴２１を開け、磁芯１７の周囲のみを囲む形状 としたものである。The second embodiment is an application of the shape of the shield case described in the first embodiment. When the level of the leakage magnetic flux or the radiation noise from the outside is small, and especially when the shield of only the magnetic core 17 is used. Depending on the degree of influence, such as when necessary, a hole 21 is formed in the upper surface of the shield case 19 by hollowing out only the coil upper surface so that only the periphery of the magnetic core 17 is surrounded.
【００１８】[0018]
以上のように本考案は、トランスのシールド化と磁芯の組立てにおける接着工 程の省略により生産工程の簡略化と生産性の向上を図り、組立工程の自動化生産 設備の投資を低減し、低コスト、高安全性、高品質のモールドトランスを提供す ることができる。 As described above, the present invention simplifies the production process and improves productivity by shielding the transformer and omitting the bonding process in assembling the magnetic core, reducing the investment in automated production equipment for the assembly process, and reducing the cost. We can provide cost, high safety and high quality mold transformer.
【図１】本考案の一実施例におけるモールドトランスの
内部構造を示す断面図FIG. 1 is a sectional view showing the internal structure of a mold transformer according to an embodiment of the present invention.
【図２】本考案の一実施例におけるシールドケースの斜
視図FIG. 2 is a perspective view of a shield case according to an embodiment of the present invention.
【図３】本考案の第二の実施例におけるシールドケース
の斜視図FIG. 3 is a perspective view of a shield case according to a second embodiment of the present invention.
【図４】従来のモールドトランスの内部構造を示す断面
図FIG. 4 is a cross-sectional view showing the internal structure of a conventional mold transformer.
１１ 巻枠 １２ 貫通孔 １３ 導線 １４ 下端鍔 １５ 配線用端子 １６ ユーザ端子 １７ 磁芯 １８ 外装樹脂 １９ シールドケース ２０ 脹輪部 ２１ 穴 11 Winding frame 12 Through hole 13 Conductive wire 14 Lower end flange 15 Wiring terminal 16 User terminal 17 Magnetic core 18 Exterior resin 19 Shield case 20 Expansion ring 21 Hole
Claims (2)
たコイルボビンと、このコイルボビンに組込まれるＥＥ
型またはＥＩ型の磁芯と、この磁芯の周囲とコイル上面
を囲む箱型の形状で、磁芯挿入方向の両側面に対向する
位置に磁芯を押圧固定する脹輪部を設けたシールドケー
スと、ユーザで使用する端子部のみを露出しトランス全
体をモールド成型で外装した外装樹脂よりなるモールド
トランス。1. A coil bobbin having a wire wound around a winding frame having a through hole in the center, and an EE incorporated in the coil bobbin.
Type or EI type magnetic core, and a box-like shape surrounding the magnetic core and the coil upper surface, and a shield provided with expansion rings for pressing and fixing the magnetic core at positions facing both sides in the magnetic core insertion direction A molded transformer consisting of a case and a terminal resin used by the user that is exposed and only the entire transformer is molded by molding.
け、磁芯の周囲のみを囲む形状とした請求項１記載のモ
ールドトランス。2. The mold transformer according to claim 1, wherein a hole is formed in the upper surface of the case as the shield case and only the periphery of the magnetic core is surrounded.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10388791U JPH0553207U (en) | 1991-12-17 | 1991-12-17 | Mold transformer |
| US07/979,784 US5977855A (en) | 1991-11-26 | 1992-11-20 | Molded transformer |
| DE69209240T DE69209240T2 (en) | 1991-11-26 | 1992-11-23 | Cast transformer |
| EP92310659A EP0544477B1 (en) | 1991-11-26 | 1992-11-23 | Molded transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10388791U JPH0553207U (en) | 1991-12-17 | 1991-12-17 | Mold transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0553207U true JPH0553207U (en) | 1993-07-13 |
Family
ID=14365944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10388791U Pending JPH0553207U (en) | 1991-11-26 | 1991-12-17 | Mold transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0553207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004253500A (en) * | 2003-02-19 | 2004-09-09 | Tamura Seisakusho Co Ltd | Low profile switching transformer |
| JP2013149943A (en) * | 2011-12-19 | 2013-08-01 | Sumitomo Electric Ind Ltd | Reactor, converter, and electric power conversion apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61139013A (en) * | 1984-12-10 | 1986-06-26 | Matsushita Electric Ind Co Ltd | Transformer |
| JPS62151008A (en) * | 1985-12-25 | 1987-07-06 | Matsushita Electric Ind Co Ltd | Lc filter |
-
1991
- 1991-12-17 JP JP10388791U patent/JPH0553207U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61139013A (en) * | 1984-12-10 | 1986-06-26 | Matsushita Electric Ind Co Ltd | Transformer |
| JPS62151008A (en) * | 1985-12-25 | 1987-07-06 | Matsushita Electric Ind Co Ltd | Lc filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004253500A (en) * | 2003-02-19 | 2004-09-09 | Tamura Seisakusho Co Ltd | Low profile switching transformer |
| JP2013149943A (en) * | 2011-12-19 | 2013-08-01 | Sumitomo Electric Ind Ltd | Reactor, converter, and electric power conversion apparatus |
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