JPS5843219Y2 - transformer - Google Patents

Description

【考案の詳細な説明】 本考案は磁電変換素子を磁束の検出のために組込んだ変
成器に関するものである。[Detailed Description of the Invention] The present invention relates to a transformer incorporating a magnetoelectric conversion element for detecting magnetic flux.

低周波変成器に直流電流を重畳した場合、励磁インダク
タンスが低下するため伝送特性が劣化する。When direct current is superimposed on a low frequency transformer, the excitation inductance decreases, resulting in deterioration of transmission characteristics.

これを防ぐため変成器に重畳された直流磁束をホール効
果素子等の磁界変換素子を用いて検出し、変圧器の他の
巻線にキャンセル電流を流す手段がとられる。To prevent this, a method is used to detect the direct current magnetic flux superimposed on the transformer using a magnetic field converting element such as a Hall effect element, and to send a canceling current to other windings of the transformer.

この場合、変成器の磁芯中の磁束密度を検出する素子を
変成器本体に組込む構造がその変成器全体の外形寸法を
小さくする上で問題となる。In this case, the structure in which an element for detecting the magnetic flux density in the magnetic core of the transformer is incorporated into the transformer body poses a problem in reducing the overall external dimensions of the transformer.

従来の磁電変換素子を組込んだ直流打消形変成器の構造
を第１図に示す。FIG. 1 shows the structure of a DC cancellation transformer incorporating a conventional magnetoelectric conversion element.

図において１は磁芯２ ａ 、２ ｂは磁芯内の磁束を
導くヨーク、３は磁電変換素子、４はコイル、５ａ、５
ｂは外部引出しリード線、６は巻枠を示す。In the figure, 1 is a magnetic core 2a, 2b is a yoke that guides the magnetic flux within the magnetic core, 3 is a magnetoelectric conversion element, 4 is a coil, 5a, 5
b indicates an external drawer lead wire, and 6 indicates a winding frame.

この第１図図示構造の直線打消形変成器においては変成
器本体のシャドーエリヤを外れた部分まで磁束誘導ヨー
クを引き出しこのヨークに磁電変換素子を組込んでいる
ため、結果的に変成器の実質外形寸法が大きく、実装ス
ペースを多く占有する欠点があった。In the linear cancellation transformer with the structure shown in Figure 1, the magnetic flux induction yoke is extended to a portion outside the shadow area of the transformer body, and the magnetoelectric conversion element is incorporated into this yoke. It has a drawback of having large external dimensions and occupying a large amount of mounting space.

本考案の目的は上記した従来技術の欠点をなくし、占有
面積の小さい磁電変換素子を組込んだ変成器を提供する
にある。An object of the present invention is to eliminate the drawbacks of the prior art described above and to provide a transformer incorporating a magnetoelectric conversion element that occupies a small area.

本考案は磁芯の磁束密度を検出するための、磁束誘導ヨ
ークをコイルの印刷配線板側に互いに交差させて引き出
し、この間に磁電変換素子を組込むことにより、実質的
占有面積を縮減させたもので゛ある。The present invention is designed to detect the magnetic flux density of the magnetic core by extending magnetic flux induction yokes to the printed wiring board side of the coil so as to cross each other, and by incorporating a magnetoelectric conversion element between them, the actual occupied area is reduced. It is.

以下図面を用いて本考案を詳細に説明する。The present invention will be explained in detail below using the drawings.

第２図は本考案による変成器の一実施例で、図中、１は
磁芯、３は磁電変換素子、４はコイル、５ａｙ５ｂは外
部接較しリード線、６は巻枠、１２ ａ 、１２ ｂは
磁芯１内の磁束を導くヨークを示し、ヨーク１２ａ、１
２ｂはコイル３の実装用印刷配線板側（コイル４の下側
）に、両ヨーク１２ ａ 、１２ ｂが交差する如く組
込まれ、この交差する両ヨーク１２ ａ 、１２ ｂ間
に磁電変換素子３が組込まれている。FIG. 2 shows an embodiment of the transformer according to the present invention, in which 1 is a magnetic core, 3 is a magnetoelectric conversion element, 4 is a coil, 5ay 5b is an external connection lead wire, 6 is a winding frame, 12a, 12b indicates a yoke that guides the magnetic flux within the magnetic core 1, and yokes 12a, 1
2b is installed on the printed wiring board side for mounting the coil 3 (below the coil 4) so that both yokes 12a and 12b intersect, and the magnetoelectric transducer 3 is installed between the intersecting yokes 12a and 12b. is incorporated.

外部引出しリード線５ ａ 、５ ｂは巻枠６と一体成
形され、この巻枠６にはヨーク１２ ａ １２ ｂを貫
通させる孔が設けられている。The external lead wires 5 a and 5 b are integrally formed with a winding frame 6, and the winding frame 6 is provided with a hole through which the yoke 12 a 12 b passes.

このように、本考案による変成器は磁電変換素子は変成
器本体のシャドーエリヤ内に位置することができため、
実装占有面積を増加させることはない。As described above, in the transformer according to the present invention, the magnetoelectric conversion element can be located in the shadow area of the transformer body, so that
It does not increase the mounting footprint.

尚、その特性は第１図図示の従来製品と同等もしくはそ
れ以上の磁束誘導効果を期待できる。As for its characteristics, it can be expected to have a magnetic flux guiding effect equal to or greater than that of the conventional product shown in FIG.

更に、本考案は磁電変換素子にて検出する磁芯内の磁束
密度の大きさを打消し直流重量回路の人力として使う場
合のみではなく、他の目的に利用する磁電変換素子組込
みの変成器にも実施することができる。Furthermore, the present invention cancels the magnitude of the magnetic flux density in the magnetic core detected by the magneto-electric transducer, and can be used not only for powering DC heavy circuits, but also for transformers incorporating magneto-electric transducers used for other purposes. can also be implemented.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の直流打消形変成器の側面図、第２図は本
考案による流或器の一実施例の側面図を示す。 １・・・・・・磁芯、３・・・・・・磁電変換素子、４
・・・・・・コイル、６・・・・・・巻枠、５ａ、５ｂ
・・・・・・リード線、１２ ａ 、１２ ｂ・・・・
・・ヨーク。FIG. 1 is a side view of a conventional DC cancellation transformer, and FIG. 2 is a side view of an embodiment of the DC canceling transformer according to the present invention. 1...Magnetic core, 3...Magnetoelectric conversion element, 4
... Coil, 6 ... Winding frame, 5a, 5b
...Lead wire, 12a, 12b...
··yoke.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 磁芯に誘起する磁束密度を検出する磁電変換素子を備え
た変成器において、磁芯の磁束を誘導する少くとも二本
のヨークをコイルの印刷配線板側に互いに交叉させて引
き出しその間に磁電変換素子を組込んだことを特徴とす
る変成器。In a transformer equipped with a magnetoelectric conversion element that detects the magnetic flux density induced in the magnetic core, at least two yokes that guide the magnetic flux of the magnetic core are crossed with each other on the printed wiring board side of the coil, and magnetoelectric conversion is performed between them. A transformer characterized by incorporating an element.