JPS5984410A - Rotary transformer - Google Patents
Rotary transformerInfo
- Publication number
- JPS5984410A JPS5984410A JP57193402A JP19340282A JPS5984410A JP S5984410 A JPS5984410 A JP S5984410A JP 57193402 A JP57193402 A JP 57193402A JP 19340282 A JP19340282 A JP 19340282A JP S5984410 A JPS5984410 A JP S5984410A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- core
- magnetic core
- cores
- primary
- 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
- 230000035699 permeability Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 229910000889 permalloy Inorganic materials 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 10
- 238000010168 coupling process Methods 0.000 abstract description 10
- 238000005859 coupling reaction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 239000010409 thin film Substances 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract description 4
- 239000011162 core material Substances 0.000 description 38
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001502 supplementing effect Effects 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)
Abstract
Description
【発明の詳細な説明】
本発明はロータリトランスにおける、製造方法をよシ簡
単にし、安価なトランスを得る、磁気コア形状及び構造
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic core shape and structure in a rotary transformer that simplifies the manufacturing process and provides an inexpensive transformer.
従来のものは第１図に示すように、磁気コア１．２は数
十ミクロンのギャップｔｙを介して、対向する各々の面
に同心円状の溝３１．３２を設け、各溝にコイルを埋設
（２、このコイルを溝よりコア表面よりはみ出す事なく
固着する構造であった為、磁気コア表面の溝内にコイル
部分を埋設する作業は非常に煩雑であシ、接着剤を溝部
に塗布する為接着剤のはみ出しが対向する磁気コアのギ
ャップ精度に影響を与え、結合係数を悪化させる問題が
あり、はみ出した接着剤の除去が特に問題となっていた
。As shown in Fig. 1, the conventional magnetic core 1.2 has concentric grooves 31 and 32 on each opposing surface with a gap ty of several tens of microns in between, and a coil is embedded in each groove. (2. Because this coil was fixed to the groove without protruding from the core surface, the work of burying the coil part in the groove on the surface of the magnetic core was very complicated, so it was necessary to apply adhesive to the groove.) Therefore, there is a problem in that the protruding adhesive affects the gap accuracy between the opposing magnetic cores and deteriorates the coupling coefficient, and the removal of the protruding adhesive has become a particular problem.
本発明は、ロータリトランスの製造原価を乍げる為に、
対向する磁気コア表面の少なくとも一方において溝のな
い形状とし、コア表面上に高透磁率材としての）゛（−
マロイ等の薄膜を設ける事により、
溝なし磁気コアを使用する事による磁気コブ間ギャップ
長ｔｙの増加に伴う結合係数の劣化を高透磁率材を並用
する事によシ防止することを目的とするものである。In order to reduce the manufacturing cost of the rotary transformer, the present invention
At least one of the opposing magnetic core surfaces has a groove-free shape, and a high magnetic permeability material is applied on the core surface.
By providing a thin film such as malloy, the purpose is to prevent the deterioration of the coupling coefficient due to the increase in the gap length ty between magnetic bumps due to the use of a grooveless magnetic core by also using a high magnetic permeability material. It is something to do.
対向する磁気コア表面に溝を設け、該溝部にコイルを埋
設する方法は、非常に煩雑であり接着剤を使用しコアと
コイル間を固着する為接着剤のはみ出しが特に問題とな
っている。ロータリトランスは対向させて数十ミクロン
の精度で使用される為磁気コア表面の平担度が特に要求
される為、前記接着剤のはみ出しが、組立上問題となり
、部品としては磁気コア表面の平行度、平担度が要求さ
れている。The method of providing a groove on the opposing magnetic core surfaces and embedding the coil in the groove is very complicated, and adhesive is used to secure the core and the coil, so adhesive protrusion is a particular problem. Since rotary transformers are used facing each other with an accuracy of several tens of microns, the flatness of the magnetic core surface is particularly required, so the overflow of the adhesive poses a problem during assembly. The degree of flatness is required.
ロータリトランスの製造原価を下げる為には、組立上で
は磁気コア上にコイル部を設け゛る方法をよシ簡単にし
、部品としてはよシシンプルな形状としてその成形方法
を簡単にする必要があるＯ
前者は磁気コア上に設ける複数のコイルを個々に配する
事なく同時に配する事が考えられるその方法の一例はス
ルーホールプリントコイル及薄膜印刷技術等を用いる事
である。後者は磁気コアの表面に溝が存在するとそのコ
ア表面の平行度平担度を高精度に仕上ける過程において
、フェライト材を使用している現在では割れ、欠は等に
より歩留シが低下する要因となっていた。In order to reduce the manufacturing cost of rotary transformers, it is necessary to simplify the method of assembling the coil section on the magnetic core, and to make the component a simpler shape and to simplify the molding method. O For the former, it is possible to arrange a plurality of coils on the magnetic core simultaneously without placing them individually.An example of this method is to use through-hole printed coils, thin film printing technology, etc. In the latter case, if there are grooves on the surface of the magnetic core, in the process of finishing the parallelism and flatness of the core surface with high precision, the yield rate decreases due to cracks, chips, etc., when ferrite material is currently used. This was a contributing factor.
為、高価なものとに−）ていた。よって溝をなくす事忙
よシその成形上の歩留シを上げよシ安価なものにする事
ができる。Therefore, it was expensive. Therefore, it is possible to eliminate the grooves and increase the molding yield, thereby making it cheaper.
以下図面により本発明の一実施例を説明する第２図に示
す様に対向する磁気コア表面に溝が。An embodiment of the present invention will be explained below with reference to the drawings. As shown in FIG. 2, there are grooves on the surfaces of opposing magnetic cores.
なく、磁気コア表面は平担な形状となっている６磁気コ
ア表面には、一枚のスルーホールプリントコイル４０．
５０が粘抄っけられ、トランス間のギャップはｔ′ｆと
なυ、磁気コア（フェライト）表面にスパッタ等にて溶
着された高透磁率のパ・−マロイ薄膜層６が設けられ、
磁性材間の距離１４は第１図より大きくなっている。The surface of the magnetic core has a flat shape.6 The surface of the magnetic core has a single through-hole printed coil 40.
50 is made of adhesive, the gap between the transformers is t'f, and a high magnetic permeability permalloy thin film layer 6 is provided on the surface of the magnetic core (ferrite) by sputtering or the like.
The distance 14 between the magnetic materials is larger than in FIG.
磁気コア表面に設けられる高透磁率膜６は磁性材間の距
離ｔｙが溝がある場合のものに比べ書１、イル部の厚さ
分だけ大きくなる為、磁気コア間（トランスの１次２次
側間）の磁気抵抗の増カルを透磁率によシ補う事により
１次２次側トランス間の結合係数の劣化を防ぐ役割りを
もっている０
第３図は第１図に比べ更に結合係数を増加させる為に磁
気コア（フェライト材）１．２の表面にパーマロイ６等
をスパッタ等にて被着させたものであり、ここに使用す
るコイル部分に一枚化されたプリントコイルを使用する
事も可能である（図示せず）。The high magnetic permeability film 6 provided on the surface of the magnetic core has a distance ty between the magnetic materials that is larger than that in the case where there is a groove by the thickness of the coil part. It has the role of preventing deterioration of the coupling coefficient between the primary and secondary transformers by compensating for the increased cal of magnetic resistance between Permalloy 6, etc. is coated on the surface of the magnetic core (ferrite material) 1.2 by sputtering etc. in order to increase the magnetic core (ferrite material), and a printed coil that is integrated into a single piece is used for the coil part used here. (not shown).
第４図は、上記のものを片側の部分に使用した例である
。FIG. 4 shows an example in which the above-mentioned device is used on one side.
ＶＴＲ用ロータリトランスの磁気コア材として通常一般
に使用される材料はフェライトであり、これは加工、成
形時に割れ、欠は等が発生しやすいものである。特にト
ランスとして使用される方法は対向するギャップｔｙは
数十ミクロンであシ、その為磁気コア表面は高精度の仕
上げを特徴とする特に溝が存在する事はその成形加工に
おける歩留りの劣化の原因の一要因である。The material commonly used as the magnetic core material of rotary transformers for VTRs is ferrite, which is prone to cracking and chipping during processing and molding. In particular, in the method used for transformers, the opposing gap ty is several tens of microns, and therefore the magnetic core surface is characterized by a high-precision finish.In particular, the presence of grooves is a cause of yield deterioration in the molding process. This is one of the factors.
性能の面から特に要求される項目として、１次２次側間
の結合係数を増す事であシ、これはｔｆを小さくするか
、磁気コア材に高透磁率材全使用する事が望ましい。ｔ
ｙはトランスの取付精度により、ある限界があり、トラ
ンス側としては透磁率を増やす以外に結合係数を大きく
す不手段がないが、フェライト材はパーマロイ等に比べ
透磁率は非常に低いものである為、フェライト材の表面
にパーマロイ等の高透磁率材をスパッタ等により被着さ
せる事により、１次２次側間の磁気抵抗を下げ、結合係
数の向上を計る事が出来る。又磁気コア表面の溝を無く
す事によりコイル部分の厚さ分だけ磁気コア間の距離□
が増し結合係数の劣化が見られるが、これを捕り為にも
高透磁率材の磁気コア表面への被着が゛必要である。In terms of performance, an item that is particularly required is to increase the coupling coefficient between the primary and secondary sides, and it is desirable to reduce tf or to use all high permeability materials for the magnetic core material. t
y has a certain limit depending on the installation accuracy of the transformer, and there is no other way to increase the coupling coefficient on the transformer side other than increasing the magnetic permeability, but ferrite material has a very low magnetic permeability compared to permalloy etc. Therefore, by depositing a high magnetic permeability material such as permalloy on the surface of the ferrite material by sputtering or the like, it is possible to lower the magnetic resistance between the primary and secondary sides and improve the coupling coefficient. Also, by eliminating the grooves on the surface of the magnetic cores, the distance between the magnetic cores can be reduced by the thickness of the coil portion □
increases and deterioration of the coupling coefficient is observed, but in order to counteract this it is necessary to adhere a high magnetic permeability material to the surface of the magnetic core.
以上の様に対向する磁気コア表面に高透磁率材を被着さ
せる事は１次２次側間の磁気抵抗を下げる事になシ結合
係数が高くなる効果を持つ。As described above, applying a high magnetic permeability material to the surfaces of the opposing magnetic cores has the effect of lowering the magnetic resistance between the primary and secondary sides and increasing the coupling coefficient.
一方磁気コア表面にコイル部分を収納する溝を有しない
事は前述の如く磁気コア単価を下げる効果を持つが、電
気性能上においてはコイル部分の厚さ分だけ磁気コア間
のギャップが拡がる事になシ結合係数を下げる要因とな
っている。On the other hand, not having a groove on the surface of the magnetic core to accommodate the coil portion has the effect of lowering the unit price of the magnetic core as described above, but in terms of electrical performance, the gap between the magnetic cores increases by the thickness of the coil portion. This is a factor that lowers the coupling coefficient.
が前述の高透磁率薄膜の被着によりそれを補う事により
その実現性を与えている。However, this is made possible by supplementing it with the deposition of the high magnetic permeability thin film mentioned above.
複数のコイルが一枚の基板上に形成されたものを使用す
れば溝なし磁気コア表面への装着は溝付のものに比べよ
り簡便なものになり作業性。If you use a coil with multiple coils formed on a single substrate, it will be easier to attach it to the surface of the magnetic core without grooves than with a grooved one.
の向上に効果を奏することができる。can be effective in improving
第１図は従来の磁気コア表面に溝を有するロータリトラ
ンスの組合せ断面図、
第２図は本発明の一実施例を示し、磁気コア表面に溝が
なく、かつ高透磁率膜を被着したロータＩＪ ）ランス
の組合せ断面図、
第３図は同じく溝付コアに高透磁率膜を施しだ例を示す
断面図、
第４図は上記２例の混合した組合せ例を示す・断面図で
ある。
１・・・・・・ローターコア、
２・・・・・・ステーターコア、
３１．３２・・・・・・コイル溝、
４１４２・・・・・・１次巻線、
５１．５２・・・・・・２次巻線、
４０・・・・・・１次側プリントコイル、第２図
第３図Figure 1 is a cross-sectional view of a conventional rotary transformer with grooves on the surface of the magnetic core, and Figure 2 shows an embodiment of the present invention, which has no grooves on the surface of the magnetic core and is coated with a high magnetic permeability film. Rotor IJ) A combined cross-sectional view of the lance; Figure 3 is a cross-sectional view showing an example in which a high permeability film is applied to the grooved core; Figure 4 is a cross-sectional view showing an example of a combination of the above two examples. . 1... Rotor core, 2... Stator core, 31.32... Coil groove, 4142... Primary winding, 51.52... ...Secondary winding, 40...Primary side printed coil, Fig. 2 Fig. 3
Claims (1)
に空隙を介して互いに向い合゛う状態で使用されて、信
号の受は渡しを行うロータＩＪ ）ランスにおいて、互
いに対向する磁気コア表面の少なくとも一方にスパツク
等にてパ・−マロイ等の高透磁率材を被着した事を特徴
とするロータリトランス。1. In a rotor IJ lance in which one of the primary and secondary sides rotates and is used with the primary and secondary sides facing each other with an air gap between them, receiving and passing signals, A rotary transformer characterized in that a high magnetic permeability material such as permalloy is adhered to at least one of the surfaces of magnetic cores facing each other by sprocketing or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57193402A JPS5984410A (en) | 1982-11-05 | 1982-11-05 | Rotary transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57193402A JPS5984410A (en) | 1982-11-05 | 1982-11-05 | Rotary transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5984410A true JPS5984410A (en) | 1984-05-16 |
Family
ID=16307347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57193402A Pending JPS5984410A (en) | 1982-11-05 | 1982-11-05 | Rotary transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5984410A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6255912A (en) * | 1985-09-05 | 1987-03-11 | Nippon Ferrite Ltd | Rotary transformer |
| EP0399812A2 (en) * | 1989-05-23 | 1990-11-28 | Kabushiki Kaisha Toshiba | Magnetic recording and reproduction apparatus |
| US5434720A (en) * | 1989-05-23 | 1995-07-18 | Kabushiki Kaisha Toshiba | Magnetic recording and reproduction apparatus with plural heads |
| JP2008518527A (en) * | 2004-10-28 | 2008-05-29 | プロ・ミクロン ゲーエムベーハー ウント コンパニー カーゲー モジュラー システムズ | Transponder system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866314A (en) * | 1981-10-15 | 1983-04-20 | Sony Corp | Rotary transformer |
-
1982
- 1982-11-05 JP JP57193402A patent/JPS5984410A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866314A (en) * | 1981-10-15 | 1983-04-20 | Sony Corp | Rotary transformer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6255912A (en) * | 1985-09-05 | 1987-03-11 | Nippon Ferrite Ltd | Rotary transformer |
| EP0399812A2 (en) * | 1989-05-23 | 1990-11-28 | Kabushiki Kaisha Toshiba | Magnetic recording and reproduction apparatus |
| US5276565A (en) * | 1989-05-23 | 1994-01-04 | Kabushiki Kaisha Toshiba | Rotary type magnetic recording and reproduction apparatus |
| US5434720A (en) * | 1989-05-23 | 1995-07-18 | Kabushiki Kaisha Toshiba | Magnetic recording and reproduction apparatus with plural heads |
| JP2008518527A (en) * | 2004-10-28 | 2008-05-29 | プロ・ミクロン ゲーエムベーハー ウント コンパニー カーゲー モジュラー システムズ | Transponder system |
| JP4747176B2 (en) * | 2004-10-28 | 2011-08-17 | プロ・ミクロン ゲーエムベーハー ウント コンパニー カーゲー モジュラー システムズ | Transponder system |
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