JPS6355853B2 - - Google Patents
Info
- Publication number
- JPS6355853B2 JPS6355853B2 JP57118477A JP11847782A JPS6355853B2 JP S6355853 B2 JPS6355853 B2 JP S6355853B2 JP 57118477 A JP57118477 A JP 57118477A JP 11847782 A JP11847782 A JP 11847782A JP S6355853 B2 JPS6355853 B2 JP S6355853B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- windings
- protrusion
- iron core
- plate
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 38
- 238000004804 winding Methods 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 238000005498 polishing Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/18—Rotary transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Description
【発明の詳細な説明】
本発明は映像信号等の磁気記録再生装置の回転
磁気ヘツドと増幅器等の電気回路との信号伝達に
使用する平板型の回転変圧器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat plate type rotary transformer used for signal transmission between a rotary magnetic head of a magnetic recording/reproducing device for video signals and the like and an electric circuit such as an amplifier.
従来の平板型の回転変圧器はたとえば４チヤン
ネル型の場合を例に示せば第１図に示す如く回転
軸１に同心状に固定した円板状回転側鉄心２と、
回転軸１を回転自在に貫通させた円板状静止側鉄
心３と、回転側鉄心２に同心状に設けた溝内にそ
れぞれ装着した回転側巻線４，５，６および７
と、回転側鉄心２の溝に対向して設けた静止側鉄
心３の溝内にそれぞれ装着した静止側巻線８，
９，１０および１１とを備えている。また巻線４
と５を１グループとし、巻線６と７を他の１グル
ープとして、巻線５と６との間および巻線９と１
０との間の回転側鉄心２および静止側鉄心３に環
状のシヨートリング１２および１３を各別に装着
して１グループと他の１グループとの間のクロス
トークを軽減している。 In the case of a conventional flat plate type rotary transformer, for example, in the case of a four-channel type, as shown in FIG.
A disk-shaped stationary side core 3 through which the rotating shaft 1 is rotatably penetrated, and rotating side windings 4, 5, 6, and 7 respectively installed in grooves provided concentrically in the rotating side core 2.
and stationary side windings 8, each installed in a groove of the stationary side core 3 provided opposite to the groove of the rotating side core 2,
9, 10 and 11. Also winding 4
and 5 as one group, and windings 6 and 7 as another group, between windings 5 and 6 and between windings 9 and 1.
Annular shot rings 12 and 13 are separately attached to the rotating side iron core 2 and stationary side iron core 3 between the two groups to reduce crosstalk between one group and the other group.
しかし上記した如きシヨートリングを設けた従
来の回転変圧器による場合のクロストークは第２
図に示す如く、3MHzにおいて−65dB、5MHzに
おいて−50dB程度であつた。なお第２図におい
てイは第１図の回転変圧器の巻線９へ信号（0dB
とする）を入力したとき巻線５に生ずる出力で、
ロはこの時クロストークにより巻線６に現われる
出力である。 However, in the case of a conventional rotary transformer equipped with a short ring as described above, the crosstalk is
As shown in the figure, it was about -65 dB at 3 MHz and -50 dB at 5 MHz. In Figure 2, A is the signal (0 dB) to the winding 9 of the rotating transformer in Figure 1.
) is the output generated in winding 5 when the input is
B is the output appearing in the winding 6 due to crosstalk at this time.
また上記のクロストークを軽減させるために、
第１図の回転変圧器の鉄心２，３をシヨートリン
グの部分で内外に分断し、内側の環状鉄心と、外
側の環状鉄心との間にシヨートリングを接着して
構成することを試みた。この様にして回転変圧器
を構成した場合、クロストークは改善されたが、
使用中における温度上昇により環状鉄心とシヨー
トリングの熱膨脹係数の相異により機械的強度が
保持できなかつた。 In addition, in order to reduce the crosstalk mentioned above,
An attempt was made to divide the cores 2 and 3 of the rotating transformer shown in FIG. 1 into inner and outer parts at the shot ring part, and to glue the shot ring between the inner and outer annular cores. When the rotating transformer was configured in this way, crosstalk was improved, but
Due to the temperature rise during use, the mechanical strength could not be maintained due to the difference in thermal expansion coefficient between the annular core and shot ring.
本発明は上記にかんがみなされたもので、上記
の欠点を解消して、簡単な構成で−80dB程度以
下にクロストークを軽減することができかつ機械
的にも強固は平板型の回転変圧器を提供すること
を目的とするものである。 The present invention has been developed in view of the above, and is capable of reducing crosstalk to about -80 dB or less with a simple configuration, and is mechanically strong by using a flat plate type rotating transformer. The purpose is to provide
この目的は同心状に１以上の突起が形成された
板状の導体と、同心状に少なくとも１以上の巻線
が装着されかつ前記導体の突起を狭んで前記導体
に装着された環状の鉄心とを備えることによつて
達成される。 This purpose consists of a plate-shaped conductor on which one or more protrusions are formed concentrically, and an annular iron core on which at least one winding is attached concentrically and attached to the conductor by narrowing the protrusions of the conductor. This is achieved by having the following.
以下、本発明を実施例により説明する。 The present invention will be explained below with reference to Examples.
第３図は本発明の一実施例を示す断面図であ
る。 FIG. 3 is a sectional view showing one embodiment of the present invention.
第３図において、１５および１６は黄銅等から
なる円板状の導体である。円板状の導体１５には
同心状に突起１５−1および１５−2が形成してあ
り、突起１５−2には回転軸１が貫通させてあつ
て突起１５−2と回転軸１とは固定してある。一
方、突起５−1を狭んで円板状の導体１５には突
起１５−1と突起１５−2との間に環状の第１の回
転側鉄心２−1が接着剤等により固着してあり、
突起１５−1の外周側には環状の第２の回転側鉄
心２−2が接着剤等により固着してある。また第
１の回転側鉄心２−1に設けた２つの溝内にはそ
れぞれ１方のグループを構成する巻線４および５
がそれぞれ装着してあり、第２の回転側鉄心２−
２に設けた溝内にはそれぞれ他方のグループを構
成する巻線６および７がそれぞれ装着してある。 In FIG. 3, 15 and 16 are disc-shaped conductors made of brass or the like. Protrusions 15-1 and 15-2 are formed concentrically on the disc-shaped conductor 15, and the rotating shaft 1 is passed through the protruding 15-2 . It is fixed. On the other hand, an annular first rotating side iron core 2-1 is fixed to the disc-shaped conductor 15 by narrowing the protrusion 5-1 between the protrusion 15-1 and the protrusion 15-2 with adhesive or the like . ,
An annular second rotating side iron core 2-2 is fixed to the outer peripheral side of the protrusion 15-1 with adhesive or the like. In addition, in the two grooves provided in the first rotating side iron core 2-1 , windings 4 and 5 constituting one group are respectively inserted.
are installed respectively, and the second rotating side iron core 2-
Windings 6 and 7 constituting the other group are respectively mounted in the grooves provided in 2 .
一方、円板状の導体１６にも、導体１５と同様
に突起１５−1および１５−2に対向する突起１６
−1および１６−2がそれぞれ同心状に形成してあ
り、突起１６−2には回転軸１を回転自在に挿通
させてある。一方、突起１６−1を狭んで円板状
の導体１６には突起１６−1と突起１６−2との間
に環状の第１の静止側鉄心３−1が接着剤等によ
り固着してあり、突起１６−1の外周側には環状
の第２の静止側鉄心３−2が接着剤等により固着
してある。第１の静止側鉄心３−1には第１の回
転側鉄心２−1の溝に対向して設けた溝内にそれ
ぞれ１方のグループを構成する巻線８および９が
装着してあり、第２の静止側鉄心にも同様に他方
のグループを構成する巻線１０および１１が装着
してある。 On the other hand, the disc-shaped conductor 16 also has protrusions 16 facing the protrusions 15-1 and 15-2 , similar to the conductor 15.
-1 and 16-2 are each formed concentrically, and the rotary shaft 1 is rotatably inserted through the protrusion 16-2 . On the other hand, an annular first stationary side iron core 3-1 is fixed to the disc-shaped conductor 16 by narrowing the protrusion 16-1 between the protrusion 16-1 and the protrusion 16-2 with adhesive or the like. An annular second stationary side iron core 3-2 is fixed to the outer peripheral side of the protrusion 16-1 with adhesive or the like. The first stationary side core 3-1 has windings 8 and 9 each constituting one group installed in a groove provided opposite to the groove of the first rotating side core 2-1 . Windings 10 and 11 constituting the other group are similarly attached to the second stationary side iron core.
また、巻線４，５，６および７の引出線Ａ，
Ｂ，ＣおよびＤは導体１５の板状部分を貫通して
引き出してあり、巻線８，９，１０および１１の
引出線A1，B1，C1およびD1は導体１６の板状部
分を貫通して引き出してある。 In addition, the lead wires A of windings 4, 5, 6 and 7,
B, C and D are drawn out through the plate-like part of the conductor 15, and the lead wires A 1 , B 1 , C 1 and D 1 of the windings 8, 9, 10 and 11 are drawn out through the plate-like part of the conductor 16. It goes through and pulls out.
以上の状態においては、本発明の一実施例の回
転変圧器は第１図に示した従来の回転変圧器にお
いて回転側鉄心２および静止側鉄心３がそれぞれ
導体を狭んで同心状に２分割され、かつ外側面に
前記導体と電気的に接続された導体板が固着され
た状態と同様であつて回転変圧器としての作用は
全く同一である。 In the above state, the rotary transformer according to the embodiment of the present invention differs from the conventional rotary transformer shown in FIG. , and a conductor plate electrically connected to the conductor is fixed to the outer surface, and the function as a rotary transformer is exactly the same.
すなわち巻線４と８、５と９は鉄心２−1，３
−1との協働による電磁誘導作用により、巻線６
と１０、７と１１は鉄心２−2，３−2との協働に
よる電磁誘導作用により信号伝達が行なわれる。 In other words, windings 4 and 8, 5 and 9 are connected to iron cores 2-1 , 3
− Due to the electromagnetic induction effect in cooperation with 1 , winding 6
and 10, 7 and 11 perform signal transmission by electromagnetic induction effect in cooperation with iron cores 2-2 and 3-2 .
しかるに、第１のグループと第２のグループと
の磁気回路を形成する回転側鉄心２−1と２−2、
静止側鉄心３−1と３−2は突起１５−1，１６−1
により分離され、かつ導体１５，１６を所定電位
点たとえば接地点に接続することによつてグルー
プ巻線間は静電シールドされる。また巻線４，
５，６および７と引出線Ａ，Ｂ，ＣおよびＤとは
静電シールドされ、かつ巻線８，９，１０および
１１と引出線A1，B1，C1およびD1とも静電シー
ルドされた状態になる。この状態において第１の
グループ側の巻線と第２のグループ側の巻線との
間のクロストークを測定した結果、第４図に示す
如くクロストークは0.1MHz〜5MHzの間において
従来の場合よりも常に≒10dB以上改善され、5M
Hz〜10MHz間においても常に≒20dB以上改善さ
れた。 However, the rotating side cores 2-1 and 2-2 forming the magnetic circuit of the first group and the second group,
Stationary side iron cores 3-1 and 3-2 have protrusions 15-1 and 16-1.
By connecting the conductors 15 and 16 to a predetermined potential point, for example, a ground point, the group windings are electrostatically shielded. Also, the winding 4,
5, 6 and 7 and the lead wires A, B, C and D are electrostatically shielded, and the windings 8, 9, 10 and 11 and the lead wires A 1 , B 1 , C 1 and D 1 are also electrostatically shielded. be in a state of being As a result of measuring the crosstalk between the windings in the first group and the windings in the second group in this state, as shown in Figure 4, the crosstalk was between 0.1MHz and 5MHz compared to the conventional case. Always improved by more than ≒10dB than 5M
Even between Hz and 10MHz, there was always an improvement of ≒20dB or more.
なお第４図のイ，ロは第２図の場合と同様に巻
線５，６に生ずる出力である。 Note that A and B in FIG. 4 are the outputs generated in the windings 5 and 6, as in the case of FIG.
また突起１５−2および１６−2を省略して、鉄
心２−1の内周面により回転軸１と固着し、鉄心
３−1の内周面と回転軸１との間に所定の間隙を
設けるようにしてもよい。 In addition, the protrusions 15-2 and 16-2 are omitted, and the inner peripheral surface of the iron core 2-1 is fixed to the rotating shaft 1, and a predetermined gap is created between the inner peripheral surface of the iron core 3-1 and the rotating shaft 1. It may also be provided.
また、以上説明した本発明の一実施例において
は引出線Ａ，Ｂ，ＣおよびＤは導体１５の板状部
分を貫通させて引き出した場合および引出線A1，
B1，C1およびD1は導体１６の板状部分を貫通さ
せて引き出した場合を例に説明したが、引出線Ｃ
およびＤを導体１５の板状部分を貫通して取り出
さず、導体１５の板状部分と第２の回転側鉄心２
−2との間に沿つて引き出し、引出線C1およびD1
を導体１６の板状部分を貫通して取り出さず、導
体１６の板状部分と第２の静止側鉄心３−2との
間に沿つて引き出してもよい。この場合のクロス
トークは上記した本発明の一実施例の場合と同じ
である。 Furthermore, in the embodiment of the present invention described above, the leader wires A, B, C, and D are drawn out by penetrating the plate-like portion of the conductor 15, and the leader wires A 1 ,
B 1 , C 1 and D 1 have been explained using the case where they are drawn out by penetrating the plate-like part of the conductor 16, but the leader line C
and D without passing through the plate-shaped part of the conductor 15 and take out the plate-shaped part of the conductor 15 and the second rotating side iron core 2.
− 2 , drawn along between the leader lines C 1 and D 1
Instead of passing through the plate-like portion of the conductor 16 and taking it out, the conductor 16 may be drawn out between the plate-like portion of the conductor 16 and the second stationary side iron core 3-2 . The crosstalk in this case is the same as in the embodiment of the present invention described above.
また、さらに引出線ＡおよびＢを導体１５の突
起１５−1を貫通させ、導体１５の円板部分と第
２の回転側鉄心２−2との間に沿つて引き出し、
引出線A1およびB1を導体１６の突起１６−1を貫
通させ、導体１６の円板部分と第２の静止側鉄心
３−2との間に沿つて引き出してもよい。この場
合にはクロストークが本発明の一実施例の場合よ
り多少低下する。 Further, the lead wires A and B are passed through the protrusion 15-1 of the conductor 15, and drawn out between the disk portion of the conductor 15 and the second rotating side iron core 2-2 ,
The lead wires A 1 and B 1 may be passed through the protrusion 16 - 1 of the conductor 16 and drawn out between the disk portion of the conductor 16 and the second stationary side iron core 3 - 2 . In this case, crosstalk is somewhat lower than in one embodiment of the present invention.
また、以上は４チヤンネルを形成する４巻線を
２グループに分割した場合を例に説明したが各チ
ヤンネルを構成する各巻線間を分離する突起を円
板状の導体に設けて同様に構成した場合において
も同様である。 In addition, although the above explanation is based on an example in which four windings forming four channels are divided into two groups, a similar structure could be created by providing a protrusion on a disc-shaped conductor to separate the windings forming each channel. The same applies to cases.
また、第３図に示した如く回転側鉄心２−1お
よびび２−2の表面より突起１５−1の表面を窪ま
せ、静止側鉄心３−1および３−2の表面より突起
１６−1の表面を窪ませてあるのは、回転側鉄心
２−1および２−2の表面を研磨する場合に、硬度
の違いにより突起１５−1を構成する黄銅部分が
研磨材内に喰い込み研磨できなくなることを防止
するためであり、また静止側鉄心３−1および３
−2の表面を研磨する場合にも同様のことを防止
するためである。 Further, as shown in FIG. 3, the surface of the protrusion 15-1 is recessed from the surface of the rotating side iron cores 2-1 and 2-2 , and the protrusion 16-1 is recessed from the surface of the stationary side iron cores 3-1 and 3-2 . The reason why the surface of the protrusion 15-1 is recessed is that when polishing the surfaces of the rotating side iron cores 2-1 and 2-2 , the brass part that makes up the protrusion 15-1 will dig into the polishing material due to the difference in hardness and cannot be polished. This is to prevent the stationary side cores 3-1 and 3 from being lost.
- This is to prevent the same thing from happening when polishing the surface of 2 .
以上説明した如く本発明によれば、板状の導体
に形成した突起をはさんで、同心状に少なくとも
１以上の巻線が装着された環状の鉄心を前記導体
に装着したために、使用により温度上昇が生じた
場合にも機械的な強度を保つことができる。 As explained above, according to the present invention, since a ring-shaped iron core having at least one or more windings concentrically attached thereto is attached to the plate-shaped conductor with the protrusion formed on the plate-shaped conductor in between, the temperature increases due to use. Mechanical strength can be maintained even when a rise occurs.
また、異なる鉄心に装着された巻線間は突起に
より分離されかつ前記導体を所定電位点に接続し
てあるため、異なる鉄心に装着された巻線間は静
電シールドされ巻線間のクロストークは軽減され
る。 In addition, since the windings installed on different cores are separated by a protrusion and the conductor is connected to a predetermined potential point, the windings installed on different cores are electrostatically shielded and crosstalk between the windings is achieved. is reduced.
また、前記巻線の引き出し線の一部または総て
を前記導体を貫通して引き出すことも容易であ
り、かくすることによつて異なる鉄心の装着され
た巻線間は静電シールドされ、かつ巻線と引出線
とも静電シールドすることができて、異なる鉄心
に装着された巻線間のクロストークは改善され
る。 Further, it is easy to draw out a part or all of the lead wires of the windings through the conductor, and in this way, the windings attached to different cores are electrostatically shielded, and Both the winding and the lead wire can be electrostatically shielded, and crosstalk between windings attached to different iron cores is improved.
また本発明を映像信号磁気記録再生装置等に用
いるときは板状の導体をアースに接続すればよ
い。板状の導体における突起の突出部表面位置を
鉄心の表面位置より窪ましたために、鉄心の表面
を研磨の際に、硬度の違いにより板状の導体の突
出部が研磨機に喰い込み、研磨ができなくなるよ
うなことは防止できる。 Further, when the present invention is used in a video signal magnetic recording/reproducing device, etc., a plate-shaped conductor may be connected to ground. Because the surface position of the protruding part of the plate-shaped conductor is recessed from the surface position of the iron core, when polishing the surface of the iron core, the protruding part of the plate-shaped conductor gets bit into the polishing machine due to the difference in hardness, causing polishing. This can be prevented from becoming impossible.
第１図は従来の平板型回転変圧器の構成を示す
断面図。第２図は第１図に示した従来の平板型回
転変圧器のクロストーク特性を示す図。第３図は
本発明の一実施例の構成を示す断面図。第４図は
本発明の一実施例のクロストーク特性を示す図。
１……回転軸、２−1および２−2……回転側鉄
心、３−1および３−2……静止側鉄心、４〜１１
……巻線、１５および１６……導体、１５−1お
よび１６−1……突起、Ａ〜Ｄ，A1〜D1……引出
線。
FIG. 1 is a sectional view showing the configuration of a conventional flat plate rotary transformer. FIG. 2 is a diagram showing the crosstalk characteristics of the conventional flat plate rotary transformer shown in FIG. FIG. 3 is a sectional view showing the configuration of an embodiment of the present invention. FIG. 4 is a diagram showing crosstalk characteristics of an embodiment of the present invention. 1...Rotating shaft, 2-1 and 2-2 ...Rotating side core, 3-1 and 3-2 ...Stationary side core, 4 to 11
...Winding, 15 and 16...Conductor, 15-1 and 16-1 ...Protrusion, A to D, A1 to D1 ...Leader wire.
Claims (1)
以上の突起を有し、かつ引出線導出手段を備えた
板状の導体と、同心状に少なくとも１つ以上の巻
線が装着され、かつ前記導体の突起を狭んで前記
導体に装着された環状の鉄心とを備えてなり、前
記突起の突出部表面位置を前記鉄心の表面位置よ
りも窪ましてなると共に、前記導体を所定電位点
に接続してなることを特徴とする回転変圧器。1. A flat plate type rotary transformer, which includes a plate-shaped conductor having one or more protrusions concentrically and equipped with a lead wire lead-out means, and at least one or more windings concentrically installed. and an annular iron core attached to the conductor by narrowing the protrusion of the conductor, the surface position of the protrusion of the protrusion is recessed relative to the surface position of the iron core, and the conductor is placed at a predetermined potential point. A rotating transformer characterized by being connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57118477A JPS599906A (en) | 1982-07-09 | 1982-07-09 | Rotary transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57118477A JPS599906A (en) | 1982-07-09 | 1982-07-09 | Rotary transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS599906A JPS599906A (en) | 1984-01-19 |
| JPS6355853B2 true JPS6355853B2 (en) | 1988-11-04 |
Family
ID=14737637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57118477A Granted JPS599906A (en) | 1982-07-09 | 1982-07-09 | Rotary transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS599906A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6085810U (en) * | 1983-11-18 | 1985-06-13 | 三菱電機株式会社 | rotary transformer |
| JPS6244412U (en) * | 1985-09-03 | 1987-03-17 | ||
| JP6669313B1 (en) * | 2018-10-19 | 2020-03-18 | 三菱電機株式会社 | Rotary transformer and ultrasonic flaw detector for ultrasonic flaw detector |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472423A (en) * | 1977-11-21 | 1979-06-09 | Mitsubishi Electric Corp | Rotary transformer |
-
1982
- 1982-07-09 JP JP57118477A patent/JPS599906A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5472423A (en) * | 1977-11-21 | 1979-06-09 | Mitsubishi Electric Corp | Rotary transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS599906A (en) | 1984-01-19 |
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