JPH09246063A - Thin transformer - Google Patents
Thin transformerInfo
- Publication number
- JPH09246063A JPH09246063A JP8457596A JP8457596A JPH09246063A JP H09246063 A JPH09246063 A JP H09246063A JP 8457596 A JP8457596 A JP 8457596A JP 8457596 A JP8457596 A JP 8457596A JP H09246063 A JPH09246063 A JP H09246063A
- Authority
- JP
- Japan
- Prior art keywords
- base
- coil
- terminal
- terminals
- shaped
- 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
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種電子機器等に
使用される薄型トランスに関し、特に、前記薄型トラン
スに用いられる表面実装用のベースの端子構造に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin transformer used in various electronic devices, and more particularly to a surface mounting base terminal structure used in the thin transformer.
【０００２】[0002]
【従来の技術】従来のこの種の薄型トランスは、第１の
例として、図４に示すように、矩形板状の長軸の両端近
傍にコイルを位置決めし、かつ、固定する複数のコイル
固定用端子２を有する表面実装用の薄型ベース１を用
い、前記端子２に薄い帯状コイルを固定し、コイルの両
端末を実装用端子とし、１対のＥ形コアを装着したもの
である。2. Description of the Related Art As a first example of a conventional thin transformer of this type, as shown in FIG. 4, a plurality of coil fixing means for positioning and fixing coils near both ends of a rectangular plate-shaped major axis. A thin base 1 for surface mounting having terminals 2 for use is used, a thin strip coil is fixed to the terminal 2, and both ends of the coil are used as mounting terminals, and a pair of E-shaped cores are mounted.
【０００３】前記ベース１は、長軸方向の両端に端子２
を形成した台部９を有し、前記台部９をつなぐように継
部１０を有し、前記継部１０の中央には挿入口４を有
し、前記挿入口４の両側に軸方向に平行にくびれた装着
部となる凹部８を有し、前記挿入口にフェライトコアの
中央脚を挿入し、前記凹部８にコアの２つの側脚を装着
できる構造となっている。The base 1 has terminals 2 at both ends in the longitudinal direction.
Has a base portion 9 formed with a joint portion 10, a joint portion 10 for connecting the base portions 9, and an insertion opening 4 at the center of the joint portion 10, and an axial direction on both sides of the insertion opening 4. It has a concave portion 8 serving as a mounting portion that is narrowed in parallel, and has a structure in which a central leg of a ferrite core can be inserted into the insertion port and two side legs of the core can be mounted in the concave portion 8.
【０００４】図５に示すように、薄型ベース１の台部９
に設けた端子２を介して帯状コイル５が装着される。前
記コイル５の両端は、図６に示すように、コイル５の端
部５ａがコ字形を呈してベースの一端を包持することに
よって設置されるので、コイル両終端末部が基板と直接
電気的に接続する実装用端子となる。As shown in FIG. 5, the base 9 of the thin base 1
The strip-shaped coil 5 is mounted via the terminal 2 provided on the. As shown in FIG. 6, both ends of the coil 5 are installed such that the end 5a of the coil 5 has a U shape and encloses one end of the base, so that both ends of the coil are directly connected to the substrate. It becomes a mounting terminal to be connected electrically.
【０００５】また、第２の従来の薄型トランスのベース
は、図７に示すように、前述した第１の従来の薄型トラ
ンスに用いた形状と同じで、台部９と継部１０を有し、
継部１０には挿入口４を有し、その両端に凹部８を有す
る。Further, as shown in FIG. 7, the base of the second conventional thin transformer has the same shape as that used for the first conventional thin transformer described above and has a base portion 9 and a joint portion 10. ,
The joint portion 10 has an insertion port 4 and concave portions 8 at both ends thereof.
【０００６】図８に示すように、第２の従来の薄型トラ
ンスの端子は、第１の従来の薄型トランスに用いられる
ベースの端子とは異なっていて、前記ベース１の一面に
突出するコイル位置決め用端子２と基板実装用端子３と
一体となったＬ字形の端子がモールドされたものであ
る。図９に示すように、コイル位置決め用端子２をコイ
ル５の穴に挿入して、コイル５をベース１に半田等で固
定することによって、Ｌ字形の端子の一方の基板実装用
端子３が基板と接して、コイルと基板が電気的に接続す
るようになっている。As shown in FIG. 8, the terminal of the second conventional thin transformer is different from the terminal of the base used in the first conventional thin transformer, and the coil positioning protruding from one surface of the base 1 is performed. The L-shaped terminal, which is integrated with the terminal 2 and the board mounting terminal 3, is molded. As shown in FIG. 9, by inserting the coil positioning terminal 2 into the hole of the coil 5 and fixing the coil 5 to the base 1 by soldering or the like, one of the board-mounting terminals 3 of the L-shaped terminal is mounted on the board. And the coil and the substrate are electrically connected to each other.
【０００７】[0007]
【発明が解決しようとする課題】第２の従来の薄型トラ
ンスのベースに設けられた端子は、コイルと基板とを電
気的に接続するので、端子の材質に金属材料を選定する
ことにより、電気的抵抗が大きくなり、トランスに悪い
影響を与える欠点があった。The terminal provided on the base of the second conventional thin transformer electrically connects the coil and the substrate. Therefore, by selecting a metal material for the terminal, the electric However, there is a drawback that the target resistance becomes large and the transformer is adversely affected.
【０００８】一方、第１の薄型トランスのベースに設け
られた端子は、コイル固定用のみの働きであるので、コ
イルの終端部を基板と電気的に接続することにより、基
板と接する平坦度が問題となり、接触の度合いがロスと
なる欠点があった。On the other hand, since the terminal provided on the base of the first thin transformer has a function only for fixing the coil, the flatness in contact with the substrate can be improved by electrically connecting the terminal end of the coil to the substrate. There was a problem that it became a problem and the degree of contact was lost.
【０００９】本発明の課題は、上記の欠点を除去するた
めに、端子部のロスが小さい薄型トランスを提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a thin transformer in which the loss of the terminal portion is small in order to eliminate the above drawbacks.
【００１０】[0010]
【課題を解決するための手段】本発明によれば、終端近
傍に固定穴を有するコ字形の帯状コイルと、１対のコア
と、両端に複数の端子を設けた平板状ベースとからなる
薄型トランスにおいて、前記端子は前記ベースを厚み方
向に貫通しベース上面に突出する端部を前記コイル用の
位置決め部と固定部とする部分と、前記ベースの底部に
接する中間部と、前記ベースの側面に沿って配される終
端部とよりなる略コ字形の板状の端子であって、前記帯
状コイルは、コイルのコ字の背部が前記位置決め部で押
えられ、前記固定穴が端子の前記固定部に装着され、コ
イルの終端部が前記端子の終端部とベースの側面とで挟
持されていることを特徴とする薄型トランスが得られ
る。According to the present invention, a thin type comprising a U-shaped strip coil having a fixing hole near the terminal end, a pair of cores, and a flat base having a plurality of terminals at both ends. In the transformer, the terminal has a portion having an end portion penetrating the base in the thickness direction and protruding to the upper surface of the base as a positioning portion and a fixing portion for the coil, an intermediate portion in contact with a bottom portion of the base, and a side surface of the base. A substantially U-shaped plate-shaped terminal consisting of a terminal portion disposed along the coil, wherein the U-shaped back portion of the coil is pressed by the positioning portion, and the fixing hole is the fixing of the terminal. A thin transformer is obtained, which is mounted on a portion of the coil, and the end of the coil is sandwiched between the end of the terminal and the side surface of the base.
【００１１】[0011]
【発明の実施の形態】本発明の薄型トランスの実施の形
態について図面を用いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a thin transformer of the present invention will be described with reference to the drawings.
【００１２】図１は、本発明の薄型トランスに用いられ
るベースの斜視図である。図２は、本発明の薄型トラン
スに用いられる帯状コイルを施したベースの斜視図であ
る。図３は、本発明の薄型トランスに用いられる帯状コ
イルを施したベースの側面図である。FIG. 1 is a perspective view of a base used in the thin transformer of the present invention. FIG. 2 is a perspective view of a base provided with a strip coil used in the thin transformer of the present invention. FIG. 3 is a side view of a base provided with a strip coil used in the thin transformer of the present invention.
【００１３】（実施例）本発明の薄型トランスは、図２
に示すように、平板状のベース１と、前記ベース１に植
設された略コ字形の板状の端子２と、前記端子２のベー
ス上面に突出した固定部１２に装着される固定穴１５を
有する帯状コイル５と磁性体からなる１対のＥ形コアと
から構成される。(Embodiment) The thin transformer of the present invention is shown in FIG.
As shown in FIG. 1, a flat plate-shaped base 1, a substantially U-shaped plate-shaped terminal 2 planted in the base 1, and a fixing hole 15 attached to a fixing portion 12 projecting from the upper surface of the base of the terminal 2. And a pair of E-shaped cores made of a magnetic material.
【００１４】図１に示すように、前記ベース１は、対向
する１対の台部９を有し、１対の前記台部９を差し渡し
するように継部１０を設けてつないでいる。前記継部１
０と台部９によって形成される凹部８にコアの２つの脚
部を装着する、また継部１０の中央に設けられた挿入口
４にコアの中央脚を装着する。As shown in FIG. 1, the base 1 has a pair of base portions 9 facing each other, and a joint portion 10 is provided to connect the pair of base portions 9 to each other. Said joint 1
The two legs of the core are mounted in the concave portion 8 formed by 0 and the base portion 9, and the central leg of the core is mounted in the insertion port 4 provided in the center of the joint portion 10.
【００１５】図２及び図３に示すように、前記ベース１
の台部９には、略コ字形の板状の端子２が植設されてい
る。端子２の略コ字をなす辺のうち、ほぼ並行する辺の
一方の辺は、他方の辺よりも長くなっている。この長い
方の辺は、前記ベース１の台部９を貫通し、端部は台部
９の上面より突出して、帯状コイル用の位置決め部１１
と固定部１２となり、連なるコ字の背部の辺は、台部９
の底面に接触しており、更に、コ字の短い方の辺、即
ち、終端部１６は、ほぼ台部との厚みの長さを持ち、ベ
ース１の側面に沿って立ち上がっている。As shown in FIGS. 2 and 3, the base 1
A plate-shaped terminal 2 having a substantially U-shape is planted in the base portion 9. Of the sides of the terminal 2 that are substantially U-shaped, one of the substantially parallel sides is longer than the other side. The longer side penetrates the base portion 9 of the base 1, and the end portion projects from the upper surface of the base portion 9, and the positioning portion 11 for the strip-shaped coil is formed.
And the fixed part 12, and the side of the back of the U-shaped line is the base part 9.
Is in contact with the bottom surface of the base 1, and the shorter side of the U-shape, that is, the terminal end portion 16 has a length substantially equal to that of the base portion and stands up along the side surface of the base 1.
【００１６】前記コイル５は、図２及び図３に示すよう
に、薄い帯状の導体からなり、全体がコ字形になってい
て、ベース１の前記位置決め部１１、固定部１２がある
面に設置され、コイル５のコ字形の背部が前記位置決め
部１１に接し、前記固定穴１５が固定部に装着されて半
田付けされる。更に、コイルの終端部１４は、前記ベー
ス１の側面と端子の終端部１６の間に装着されて半田付
けされる。As shown in FIGS. 2 and 3, the coil 5 is made of a thin strip-shaped conductor and has a U shape as a whole, and is installed on the surface of the base 1 on which the positioning portion 11 and the fixing portion 12 are located. Then, the U-shaped back portion of the coil 5 contacts the positioning portion 11, and the fixing hole 15 is attached to the fixing portion and soldered. Further, the terminal end portion 14 of the coil is attached and soldered between the side surface of the base 1 and the terminal end portion 16 of the terminal.
【００１７】薄型トランスは、１対のＥ型コアの側脚が
ベース１の凹部に中脚が挿入口に装着されて、形成され
る。その際、コアは、コイルと接触しないように、コア
とコイルとの間に絶縁物を介して設置される。The thin transformer is formed by mounting the pair of side legs of the E-shaped core in the recess of the base 1 and the middle leg in the insertion opening. At that time, the core is installed via an insulator between the core and the coil so as not to contact the coil.
【００１８】上述したように、端子を構成し、図３に示
すように、６をＲ1、７をＲ2とすると、この端子とコイ
ルがつくる回路の抵抗は、Ｒ1・Ｒ2／Ｒ1＋Ｒ2となり、
端子部の抵抗が小さく、端子が基板の実装面と接する端
子の接触面で平坦になり、ロスがきわめて小さくなる。If the terminals are constructed as described above and 6 is R 1 and 7 is R 2 as shown in FIG. 3, the resistance of the circuit formed by this terminal and the coil is R 1 · R 2 / R 1 + R 2 ,
The resistance of the terminal portion is small, the terminal is flat on the contact surface of the terminal that contacts the mounting surface of the substrate, and the loss is extremely small.
【００１９】[0019]
【発明の効果】以上、述べたように、端子部のロスが小
さい薄型トランスを提供することができた。As described above, it was possible to provide a thin transformer in which the loss of the terminal portion is small.
【図１】本発明の薄型トランスに用いられる、端子を設
けたベースを示す斜視図。FIG. 1 is a perspective view showing a base provided with terminals, which is used in a thin transformer of the present invention.
【図２】コイルを配したベースを示す斜視図。FIG. 2 is a perspective view showing a base on which a coil is arranged.
【図３】図２に示したベースの側面図。FIG. 3 is a side view of the base shown in FIG.
【図４】従来の薄型トランスに用いられる、端子を設け
たベースの斜視図。FIG. 4 is a perspective view of a base provided with terminals, which is used in a conventional thin transformer.
【図５】コイルを配した図４のベースの斜視図。5 is a perspective view of the base shown in FIG. 4 in which coils are arranged.
【図６】図５に示したベースの側面図。6 is a side view of the base shown in FIG.
【図７】他の従来の薄型トランスに用いられる、端子を
設けたベースの斜視図。FIG. 7 is a perspective view of a base provided with terminals, which is used in another conventional thin transformer.
【図８】コイルを配した図７のベースの斜視図。FIG. 8 is a perspective view of the base shown in FIG. 7 in which coils are arranged.
【図９】図８に示したベースの側面図。9 is a side view of the base shown in FIG.
１ （薄型）ベース ２ （コイル固定用又はコイル位置決め用）端子 ３ （基板実装用）端子 ４ 挿入口 ５ （帯状）コイル ５ａ 端部 ６ Ｒ1 ７ Ｒ2 ８ 凹部 ９ 台部 １０ 継部 １１ 位置決め部 １２ 固定部 １３ 折り曲げ部 １４ コイルの終端部 １５ 固定穴 １６ 端子の終端部1 (thin) base 2 (for coil fixing or coil positioning) terminal 3 (for board mounting) terminal 4 insertion slot 5 (strip-shaped) coil 5a end 6 R 1 7 R 2 8 recess 9 stand 10 joint 11 positioning Part 12 Fixing part 13 Bending part 14 Coil end part 15 Fixing hole 16 Terminal end part
Claims (1)
コイルと、１対のコアと、両端に複数の端子を設けた平
板状ベースとからなる薄型トランスにおいて、前記端子
は前記ベースを厚み方向に貫通しベース上面に突出する
端部を前記コイル用の位置決め部と固定部とする部分
と、前記ベースの底部に接する中間部と、前記ベースの
側面に沿って配される終端部とよりなる略コ字形の板状
の端子であって、前記帯状コイルは、コイルのコ字の背
部が前記位置決め部で押えられ、前記固定穴が端子の前
記固定部に装着され、コイルの終端部が前記端子の終端
部とベースの側面とで挟持されていることを特徴とする
薄型トランス。1. A thin transformer comprising a U-shaped strip coil having a fixing hole near a terminal end, a pair of cores, and a flat plate-shaped base having a plurality of terminals at both ends, wherein the terminals are thicker than the base. A portion having an end portion penetrating in the direction and protruding to the upper surface of the base as a positioning portion and a fixing portion for the coil, an intermediate portion in contact with the bottom portion of the base, and an end portion arranged along the side surface of the base. In the strip-shaped coil, the U-shaped back portion of the coil is pressed by the positioning portion, the fixing hole is attached to the fixing portion of the terminal, and the terminal end portion of the coil is A thin transformer, which is sandwiched between a terminal end portion of the terminal and a side surface of a base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08457596A JP3437028B2 (en) | 1996-03-12 | 1996-03-12 | Thin transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08457596A JP3437028B2 (en) | 1996-03-12 | 1996-03-12 | Thin transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09246063A true JPH09246063A (en) | 1997-09-19 |
| JP3437028B2 JP3437028B2 (en) | 2003-08-18 |
Family
ID=13834481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08457596A Expired - Fee Related JP3437028B2 (en) | 1996-03-12 | 1996-03-12 | Thin transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3437028B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008103371A (en) * | 2006-10-17 | 2008-05-01 | Nichicon Corp | Transformer |
| JP2010045187A (en) * | 2008-08-12 | 2010-02-25 | Tdk Corp | Bobbin for coil, coil winding, and coil component |
| KR101241539B1 (en) * | 2011-10-24 | 2013-03-11 | 엘지이노텍 주식회사 | Planar transformer and diplay apparatus thereof |
-
1996
- 1996-03-12 JP JP08457596A patent/JP3437028B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008103371A (en) * | 2006-10-17 | 2008-05-01 | Nichicon Corp | Transformer |
| JP2010045187A (en) * | 2008-08-12 | 2010-02-25 | Tdk Corp | Bobbin for coil, coil winding, and coil component |
| US7924133B2 (en) | 2008-08-12 | 2011-04-12 | Tdk Corporation | Bobbin for coil, coil winding, and coil component |
| KR101241539B1 (en) * | 2011-10-24 | 2013-03-11 | 엘지이노텍 주식회사 | Planar transformer and diplay apparatus thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3437028B2 (en) | 2003-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |