JPH0821510B2 - Rotary transformer - Google Patents
Rotary transformerInfo
- Publication number
- JPH0821510B2 JPH0821510B2 JP2006605A JP660590A JPH0821510B2 JP H0821510 B2 JPH0821510 B2 JP H0821510B2 JP 2006605 A JP2006605 A JP 2006605A JP 660590 A JP660590 A JP 660590A JP H0821510 B2 JPH0821510 B2 JP H0821510B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic body
- cylinder side
- inner cylinder
- rotary transformer
- side magnetic
- 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 - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、互いに相対回転するものの信号伝達に用い
るロータリートランスに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary transformer used for transmitting signals of mutually rotating ones.
従来の技術 第８図，第９図は、従来のロータリートランスまの構
成を示すものである。第８図は上面図、第９図は断面図
である。第８図，第９図において、１は内筒側磁性体
で、その外周溝にコイル３が巻線されている。２は外筒
側磁性体で内筒側磁性体の巻線溝と対向する位置に内周
溝が形成され、コイル４が巻線されている。内筒側磁性
体１及び外筒側磁性体２は、それぞれ一体のものであ
り、円周方向に対して電気・磁気的に連続した円筒状磁
性体の構成にしている。2. Description of the Related Art FIGS. 8 and 9 show the structure of a conventional rotary transformer. FIG. 8 is a top view and FIG. 9 is a sectional view. In FIGS. 8 and 9, 1 is a magnetic material on the inner cylinder side, and a coil 3 is wound around the outer peripheral groove thereof. An outer cylinder side magnetic body 2 has an inner peripheral groove formed at a position facing the winding groove of the inner cylinder side magnetic body, and the coil 4 is wound. The inner cylinder side magnetic body 1 and the outer cylinder side magnetic body 2 are integral with each other, and have a cylindrical magnetic body that is electrically and magnetically continuous in the circumferential direction.
発明が解決しようとする課題 しかしながら、上記従来の構成では、磁性体が円周方
向に対して連続しているため、第10図に示すようにうず
電流が大きくなり、損失を生じる原因となる。また、こ
のうず電流は、周波数の上昇とともに、増大するため、
高周波帯域で特性を劣化させる大きな要因となり、ビデ
オテープレコーダー等における高画質化技術に支障をき
たすという問題点を有していた。However, in the above-described conventional configuration, since the magnetic body is continuous in the circumferential direction, the eddy current becomes large as shown in FIG. 10, which causes a loss. Also, this eddy current increases as the frequency increases,
There is a problem that it becomes a major factor of deteriorating the characteristics in a high frequency band and hinders the image quality improving technology in a video tape recorder or the like.
本発明は上記従来の問題点を解決するもので、うず電
流を大幅に削減し、損失を少なくすることにより、より
高周波帯域まで使用できるロータリートランスを提供す
ることを目的とする。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a rotary transformer that can be used in a higher frequency band by significantly reducing the eddy current and reducing the loss.
課題を解決するための手段 この課題を解決するために本発明のロータリートラン
スは、内筒側磁性体と外筒側磁性体の少なくともいずれ
か一方の磁性体は、断面円弧状の複数個の磁性片を、他
方の磁性体とは反対側に配設される円筒型の保持体に、
前記巻線溝を形成すべく所定間隔ごとに保持し、かつ前
記内筒側と外筒側磁性体の巻線溝に巻線を施したもので
ある。Means for Solving the Problem In order to solve this problem, a rotary transformer according to the present invention is configured such that at least one of the inner cylinder side magnetic body and the outer cylinder side magnetic body has a plurality of magnetic bodies having an arc-shaped cross section. One piece to a cylindrical holding body arranged on the side opposite to the other magnetic body,
The winding grooves are held at predetermined intervals so as to form the winding grooves, and windings are formed in the winding grooves of the inner cylinder side and outer cylinder side magnetic bodies.
作用 この構成により、内筒側、外筒側磁性体の少なくとも
一方が円周方向に対して不連続となるため、電気・磁気
的にも不連続となり、全体として流れるうず電流を大幅
に削減することができる。この結果、より高周波帯域ま
で使用できるようになり、ビデオテープレコーダーにお
ける高画質化技術に対応できるなど優れたロータリート
ランスを得ることができる。また分割された磁性片を保
持体に所定間隔ごとに保持させることにより巻線溝が形
成されるので、別途巻線溝加工が不要となり、生産性の
高いものとなる。Action With this configuration, at least one of the inner cylinder side and the outer cylinder side magnetic body becomes discontinuous in the circumferential direction, so that it becomes electrically and magnetically discontinuous and the eddy current that flows as a whole is greatly reduced. be able to. As a result, it becomes possible to use a higher frequency band, and it is possible to obtain an excellent rotary transformer which can be applied to the image quality improving technology in the video tape recorder. Further, since the winding grooves are formed by holding the divided magnetic pieces on the holding body at a predetermined interval, it is not necessary to separately process the winding grooves, resulting in high productivity.
実施例 以下、本発明の一実施例について、図面を参照しなが
ら説明する。Embodiment One embodiment of the present invention will be described below with reference to the drawings.
第１図，第２図は、本発明の第１の実施例におけるロ
ータリートランスの構成を示すものである。1 and 2 show the structure of the rotary transformer in the first embodiment of the present invention.
第１図は上面図、第２図は断面図である。 FIG. 1 is a top view and FIG. 2 is a sectional view.
第１図，第２図において、６は内筒側断面円弧状磁性
片、７は外筒側断面円弧状磁性片で、それぞれに内筒側
保持体８及び外筒側保持体９により複数個一定の間隔を
もってほぼ円筒を形成するように保持されている。さら
に、対向する周溝には、それぞれ内筒側巻線コイル３及
び外筒側巻線コイル４が巻線されている。In FIG. 1 and FIG. 2, 6 is an arcuate magnetic piece having a cross section on the inner cylinder side, and 7 is a magnetic piece having an arcuate cross section on the outer cylinder side. It is held so as to form a substantially cylindrical shape at regular intervals. Further, the inner cylinder side winding coil 3 and the outer cylinder side winding coil 4 are wound in the circumferential grooves facing each other.
以上のように構成されたロータリートランスについ
て、以下その動作を説明する。The operation of the rotary transformer configured as described above will be described below.
ここでは、内筒側断面円弧状磁性片６からなる磁性体
に巻線した内筒側磁性体について述べる。Here, the inner cylinder side magnetic body wound around the magnetic body composed of the magnetic piece 6 having an arcuate section in the inner cylinder side will be described.
第10図は、従来のロータリートランスにおけるうず電
流の発生状態を模式的に示したものであり、第７図は、
本発明の構成によるうず電流の発生状態を模式的に示し
たものである。FIG. 10 schematically shows the generation state of eddy current in the conventional rotary transformer, and FIG. 7 shows
3 is a schematic diagram showing the generation state of an eddy current according to the configuration of the present invention.
本発明の構成により、発生するうず電流10aは、断面
円弧状の磁性片６内でのみ回転するようになり、この結
果、従来のロータリートランスのうず電流10bに比べ、
全体として流れるうず電流が大幅に少なくなる。これに
より、第11図に示すように、使用できる周波数域が実線
で示す従来例に比べ、破線で示す本発明のロータリート
ランスはより高帯域化できるようになる。With the configuration of the present invention, the generated eddy current 10a rotates only in the magnetic piece 6 having an arcuate cross section, and as a result, compared with the eddy current 10b of the conventional rotary transformer,
The eddy current that flows as a whole is significantly reduced. As a result, as shown in FIG. 11, the rotary transformer of the present invention shown by the broken line can have a higher band than the conventional example where the usable frequency range is shown by the solid line.
外筒側磁性体の動作については、内筒側磁性体の動作
と同じであるため、省略する。The operation of the outer cylinder-side magnetic body is the same as the operation of the inner cylinder-side magnetic body, and thus will be omitted.
以上のように本実施例によれば、内筒側円筒磁性体及
び外筒側円筒磁性体をそれぞれ断面円弧状の磁性片を組
合せて構成したことにより、相方向にうず電流の少ない
ロータリートランスを得ることができる。As described above, according to the present embodiment, the inner cylinder side cylindrical magnetic body and the outer cylinder side cylindrical magnetic body are configured by combining magnetic pieces each having an arcuate cross section, so that a rotary transformer with a small eddy current in the phase direction can be obtained. Obtainable.
以下、本発明の第2,第３の実施例について説明する。
本発明の第１の実施例では、内筒側磁性体及び外筒側磁
性体の両方を断面円弧状の磁性片より構成したが、内筒
側磁性体及び外筒側磁性体のいずれか一方を断面円弧状
の磁性片の組合せとし、片側は円筒状磁性体を用いても
効果がある。第３図，第４図は内筒側磁性体のみを断面
円弧状の磁性片６より構成した内筒側磁性体７′を円筒
状とした第２の実施例であり、第５図，第６図は外筒側
磁性体のみを断面円弧状の磁性片７より構成し内筒側磁
性体６′を円筒状とした第３の実施例である。The second and third embodiments of the present invention will be described below.
In the first embodiment of the present invention, both the inner cylinder side magnetic body and the outer cylinder side magnetic body are composed of magnetic pieces having an arcuate cross section, but either the inner cylinder side magnetic body or the outer cylinder side magnetic body is formed. It is also effective to use a combination of magnetic pieces having an arcuate cross section and to use a cylindrical magnetic body on one side. FIGS. 3 and 4 show a second embodiment in which the inner cylinder side magnetic body 7'comprising only the inner cylinder side magnetic body from the magnetic piece 6 having an arcuate cross section has a cylindrical shape. FIG. 6 shows a third embodiment in which only the outer cylinder side magnetic body is composed of a magnetic piece 7 having an arcuate cross section and the inner cylinder side magnetic body 6'is cylindrical.
第2,第３の実施例の動作については、第１の実施例の
場合と同様である。The operation of the second and third embodiments is the same as that of the first embodiment.
なお、本実施例では、４つの断面円弧状の磁性片より
構成した図としているが、これは必要に応じいくつであ
ってもよい。In the present embodiment, the drawing is composed of four magnetic pieces having an arc-shaped cross section, but this may be any number as required.
発明の効果 以上のように本発明は、内筒側磁性体と外筒側磁性体
の少なくともいずれか一方の磁性体は、断面円弧状の複
数個の磁性片を、他方の磁性体とは反対側に配設される
円筒型の保持体に、前記巻線溝を形成すべく所定間隔ご
とに保持し、かつ前記内筒側と外筒側磁性体の巻線溝に
巻線を施したものである。EFFECTS OF THE INVENTION As described above, according to the present invention, at least one of the inner cylinder side magnetic body and the outer cylinder side magnetic body has a plurality of magnetic pieces having an arc-shaped cross section, and the other magnetic body is opposite to the other magnetic body. Which is held at a predetermined interval to form the winding groove on the cylindrical holding body disposed on the side, and winding is applied to the winding grooves of the inner cylinder side and the outer cylinder side magnetic body. Is.
そして以上の構成とすれば内筒側、外筒側磁性体の少
なくとも一方が円周方向に対して不連続となるため、電
気・磁気的にも不連続となり、全体として流れるうず電
流を大幅に削減することができる。この結果、より高周
波帯域まで使用できるようになり、ビデオテープレコー
ダーにおける高画質化技術に対応できるなど優れたロー
タリートランスを得ることができる。また分割された磁
性片を保持体に所定間隔ごとに保持させることにより巻
線溝が形成されるので、別途巻線溝加工が不要となり、
生産性の高いものとなる。With the above configuration, at least one of the inner cylinder side and the outer cylinder side magnetic body is discontinuous in the circumferential direction, so that it is electrically and magnetically discontinuous, and the eddy current flowing as a whole is significantly increased. Can be reduced. As a result, it becomes possible to use a higher frequency band, and it is possible to obtain an excellent rotary transformer which can be applied to the image quality improving technology in the video tape recorder. Further, since the winding grooves are formed by holding the divided magnetic pieces on the holding body at predetermined intervals, it is not necessary to separately process the winding grooves.
It will be highly productive.
第１図，第２図は本発明の第１の実施例におけるロータ
リートランスの上面図と断面図、第３図，第４図は本発
明の第２の実施例におけるロータリートランスの上面図
と断面図、第５図，第６図は本発明の第３の実施例にお
けるロータリートランスの上面図と断面図、第７図は本
発明の一実施例におけるロータリートランスのうず電流
の発生を示した斜視図、第８図，第９図は従来例のロー
タリートランスの上面図と断面図、第10図は従来のロー
タリートランスのうず電流の発生を示した斜視図、第11
図は従来のロータリートランスと本発明のロータリート
ランスの周波数特性を比較した特性図である。 ３……内筒側巻線コイル、４……外筒側巻線コイル、６
……内筒側断面円弧状磁性片、７……外筒側断面円弧状
磁性片、８……内筒側保持体、９……外筒側保持体、10
a……うず電流。1 and 2 are a top view and a sectional view of a rotary transformer according to the first embodiment of the present invention, and FIGS. 3 and 4 are a top view and a sectional view of a rotary transformer according to the second embodiment of the present invention. 5, 5 and 6 are a top view and a sectional view of a rotary transformer according to a third embodiment of the present invention, and FIG. 7 is a perspective view showing the generation of an eddy current of the rotary transformer according to an embodiment of the present invention. FIGS. 8 and 9 are a top view and a sectional view of a conventional rotary transformer, and FIG. 10 is a perspective view showing the generation of an eddy current in the conventional rotary transformer.
The figure is a characteristic diagram comparing the frequency characteristics of the conventional rotary transformer and the rotary transformer of the present invention. 3 ... Inner cylinder side winding coil, 4 ... Outer cylinder side winding coil, 6
...... Inner cylinder side cross-section arcuate magnetic piece, 7 …… Outer cylinder side cross-section arcuate magnetic piece, 8 …… Inner cylinder side holder, 9 …… Outer cylinder side holder, 10
a: Eddy current.
Claims (2)
性体と、前記内筒側磁性体の巻線溝と対向する内周面に
巻線溝を形成した円筒状の外筒側磁性体を備え、この内
筒側磁性体と外周側磁性体の少なくともいずれか一方の
磁性体は、断面円弧状の複数個の磁性片を、他方の磁性
体とは反対側に配設される円筒型の保持体に、前記巻線
溝を形成すべく所定間隔ごとに保持し、かつ前記内筒側
と外筒側磁性体の巻線溝に巻線を施してなるロータリー
トランス。1. A cylindrical inner cylinder side magnetic body having a winding groove on an outer peripheral surface, and a cylindrical outer body having a winding groove formed on an inner peripheral surface facing the winding groove of the inner cylinder side magnetic body. A cylinder-side magnetic body is provided, and at least one of the inner cylinder-side magnetic body and the outer-circumferential-side magnetic body has a plurality of magnetic pieces each having an arc-shaped cross section, and the magnetic pieces are arranged on the opposite side of the other magnetic body. A rotary transformer comprising: a cylindrical holder that holds the winding grooves at predetermined intervals so as to form the winding grooves; and windings are made in the winding grooves of the inner cylinder side and outer cylinder side magnetic bodies.
断面円弧状の複数個の磁性片を、円筒型の保持体に、巻
線溝を形成すべく所定間隔ごとに保持させた請求項
（１）記載のロータリートランス。2. An inner cylinder side magnetic body and an outer cylinder side magnetic body,
The rotary transformer according to claim 1, wherein a plurality of magnetic pieces having an arcuate cross section are held by a cylindrical holder at predetermined intervals to form winding grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006605A JPH0821510B2 (en) | 1990-01-16 | 1990-01-16 | Rotary transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006605A JPH0821510B2 (en) | 1990-01-16 | 1990-01-16 | Rotary transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03211708A JPH03211708A (en) | 1991-09-17 |
| JPH0821510B2 true JPH0821510B2 (en) | 1996-03-04 |
Family
ID=11642976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006605A Expired - Lifetime JPH0821510B2 (en) | 1990-01-16 | 1990-01-16 | Rotary transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0821510B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2953321B1 (en) * | 2009-11-30 | 2012-02-24 | Hispano Suiza Sa | ROTATING TRANSFORMER WITH EASY INSTALLATION |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01175709A (en) * | 1987-12-29 | 1989-07-12 | Matsushita Electric Ind Co Ltd | Rotary transformer |
-
1990
- 1990-01-16 JP JP2006605A patent/JPH0821510B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03211708A (en) | 1991-09-17 |
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