JPH0215921B2 - - Google Patents
Info
- Publication number
- JPH0215921B2 JPH0215921B2 JP7049081A JP7049081A JPH0215921B2 JP H0215921 B2 JPH0215921 B2 JP H0215921B2 JP 7049081 A JP7049081 A JP 7049081A JP 7049081 A JP7049081 A JP 7049081A JP H0215921 B2 JPH0215921 B2 JP H0215921B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- head
- rotating
- core
- core halves
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000000696 magnetic material Substances 0.000 claims description 8
- 230000035699 permeability Effects 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 2
- 238000005304 joining Methods 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
- G11B5/53—Disposition or mounting of heads on rotating support
- G11B5/531—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
Description
【発明の詳細な説明】
本発明は小型のビデオテープレコーダに用いる
に好適な回転磁気ヘツドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotating magnetic head suitable for use in a small-sized video tape recorder.
一般にビデオテープレコーダは、シリンダの周
面を斜め方向に磁気テープを走行させると共に、
上記シリンダ面を回転走行する磁気ヘツドを上記
磁気テープに摺接させて信号の記録再生を行う如
く構成されている。このような所謂へリカルスキ
ヤンニング方式のVTRに対して、近年その小
型・軽量化と記録の長時間化が強く要望されてい
る。例えば10時間以上の記録と数Kg程度の小型で
軽量なVTRの出現が望まれ、これに伴つて小型
で高精度な回転磁気ヘツドの開発が必要となつて
いる。 Generally, a video tape recorder runs a magnetic tape diagonally around the circumference of a cylinder, and
A magnetic head rotating on the cylinder surface is brought into sliding contact with the magnetic tape to record and reproduce signals. In recent years, there has been a strong demand for so-called helical scanning type VTRs to be smaller and lighter and to have longer recording times. For example, it is hoped that a compact and lightweight VTR with a recording time of 10 hours or more and weighing only a few kilograms will emerge, and this will require the development of a compact and highly accurate rotating magnetic head.
従来、VTRに用いられていた回転磁気ヘツド
は、例えば第１図ａ〜ｃに示すように、回転軸１
に取付けられ、この回転軸１と一体的に回転する
回転板２上の180゜対向する位置にヘツドベース３
ａ，３ｂを介して磁気ヘツド単体４ａ，４ｂを取
付けた構造を有する。磁気ヘツド単体４ａ，４ｂ
は第１図ｃに拡大して模式的に示すように、２つ
のヘツドチツプコア体５ａ，５ｂを所定のギヤツ
プＧを設けて接合し、その先端部に巻線６を設け
た構造を有し、上記コア体５ａ，５ｂに磁路を形
成してその先端に摺接する磁気テープに対して信
号の記録再生を行うものである。このような磁気
ヘツド単体４ａ，４ｂは、前記回転板２に、その
ギヤツプＧが直径上の180゜に対向する位置（誤差
1′以内）に、且つその先端が回転中心から等距離
で、しかもシリンダ７の周面より所定の量（Da
＝Db）だけ突出する位置に高精度に位置決めし
て取付けられるものである。この際、磁気テープ
に対するヘツド高（トラツク中心位置）も高精度
に調整して取付けられる。 Conventionally, a rotating magnetic head used in a VTR has a rotating shaft 1, as shown in FIGS. 1a to 1c, for example.
A head base 3 is mounted on a rotating plate 2 that rotates integrally with the rotating shaft 1 at a position facing 180°.
It has a structure in which magnetic heads 4a and 4b are attached via a and 3b. Single magnetic head 4a, 4b
As shown schematically in an enlarged view in FIG. A magnetic path is formed in the core bodies 5a, 5b, and signals are recorded and reproduced on a magnetic tape that slides into contact with the tip of the magnetic path. Such single magnetic heads 4a and 4b are placed at a position (error
1'), and its tip is equidistant from the center of rotation, and at a predetermined distance (Da
= Db) can be positioned and mounted with high precision at a position that protrudes. At this time, the height of the head (track center position) relative to the magnetic tape is also adjusted with high precision before installation.
一方、前記回転板２の中央部にはその回転中心
と同軸的に回転コア８ａ，８ｂが取付けられる。
この回転コア８ａ，８ｂは、シリンダ７に固定さ
れた固定コア９ａ，９ｂと対向して、非接触に信
号送受を行う回転トランスを構成する。前記磁気
ヘツド単体４ａ，４ｂは上記回転コア８ａ，８ｂ
に接続され、この回転トランスを介して外部回路
装置との間で信号送受を行つて作動する。 On the other hand, rotating cores 8a and 8b are attached to the center of the rotating plate 2 coaxially with the center of rotation thereof.
The rotating cores 8a, 8b face fixed cores 9a, 9b fixed to the cylinder 7, and constitute a rotating transformer that transmits and receives signals in a non-contact manner. The single magnetic heads 4a, 4b are connected to the rotating cores 8a, 8b.
It operates by transmitting and receiving signals to and from an external circuit device via this rotary transformer.
ところがこのような従来構造ヘツドは、高精度
な位置決め調整を行つた組立て（製作）を行うこ
とが必要であり、高精度な組立て用治具と顕微鏡
装置を必要とすることのみならず、高度な熟練し
た組立て技術を要する。しかも回転トランスの位
置決めやギヤツプＳの調整が非常に困難であり、
信号伝達効率が劣化する虞れが多分にあつた。特
に、軽量小型化が指向される回転磁気ヘツドにあ
つては、各構成要素（部品）の大きさや取付け精
度が極めて大きな問題となり、実用化が非常に困
難となつた。 However, such a head with a conventional structure requires assembly (manufacturing) with highly accurate positioning adjustment, which not only requires highly accurate assembly jigs and microscope equipment, but also requires advanced Requires skilled assembly techniques. Moreover, it is extremely difficult to position the rotary transformer and adjust the gap S.
There was a high possibility that signal transmission efficiency would deteriorate. Particularly in the case of rotating magnetic heads, which are designed to be lightweight and compact, the size and mounting accuracy of each component (part) have become extremely important issues, making it extremely difficult to put them into practical use.
本発明はこのような事情を考慮してなされたも
ので、その目的とするところは、小型のVTRに
組込むに好適な小型で高精度で、しかも組立ての
容易な実用性の高い構造の回転磁気ヘツドを提供
することにある。 The present invention has been made in consideration of these circumstances, and its purpose is to provide a rotating magnetic field that is compact, highly accurate, and has a highly practical structure that is easy to assemble and is suitable for being incorporated into a small VCR. The aim is to provide a head.
即ち本発明は、磁気ヘツド自体、つまり180゜対
向する位置に設けられる２つの磁気ヘツド部を回
転板の一部として一体的に形成すると共に、回転
トランスを構成する回転コアも上記回転板の一部
として一体的に組込み、且つ上記回転板に直接的
に回転中心位置規制機能を持たせることによつ
て、各部の位置・寸法を高精度に設定して小型化
を可能として上記した目的を効果的に達成したも
のである。 That is, in the present invention, the magnetic head itself, that is, the two magnetic head parts provided at positions facing each other at 180 degrees, are integrally formed as part of the rotary plate, and the rotary core constituting the rotary transformer is also formed as a part of the rotary plate. By integrally incorporating the rotary plate as a part and providing the rotation center position regulating function directly to the rotary plate, the position and dimensions of each part can be set with high precision, making it possible to downsize and achieve the above purpose. This is what we achieved.
以下、図面を参照して本発明の実施例につき説
明する。 Embodiments of the present invention will be described below with reference to the drawings.
第２図ａ，ｂは本発明の一実施例に係る回転磁
気ヘツドの概略構成を示すもので、ａは平面構成
図、ｂはシリンダに組込んだ状態を示す側面構成
図である。半円形状の第１および第２のコア半体
１１，１２は、両先端部１１ａ，１２ａを耐摩耗
性に優れ、且つ高透磁率磁性材料である単結晶フ
エライトやセンダストにより構成し、中央部１１
ｂ，１２ｂを比較的安価な多結晶フエライトやパ
ーマロイ等で構成した複合構造体となつている。
上記先端部１１ａ，１２ａは、コア半体１１，１
２の半径長より、所定の量だけ突出させて設けら
れており、後述するヘツド部を構成するものとな
つている。しかしてこのような第１および第２の
コア半体１１，１２は、半円形状の弦となる直線
面を突き合せ面として、所定の間隙（ギヤツプ）
Ｇを設けて相互に突き合せて接合され、１枚の円
形板状に一体化されている。この接合は、例えば
有機接着剤を用いて行われたり、ガラス溶着等に
よつて行われ、上記ギヤツプＧを高精度に寸法規
制して行われる。このギヤツプＧは、上記先端部
１１ａ，１２ａの接合体によつて形成される磁気
ヘツド部のヘツドギヤツプとなるものである。し
かして磁気ヘツド部は、その先端内部に設けられ
た巻線溝１３を通して巻装される巻線１４により
励磁され、磁路を形成して上記ギヤツプ面に摺接
する磁気テープに対して信号の記録再生を行う。 FIGS. 2a and 2b show a schematic configuration of a rotating magnetic head according to an embodiment of the present invention, in which a is a plan view and b is a side view of the rotary magnetic head assembled into a cylinder. The semicircular first and second core halves 11 and 12 have both tip portions 11a and 12a made of single-crystal ferrite or sendust, which is a magnetic material with excellent wear resistance and high magnetic permeability, and a central portion. 11
It is a composite structure in which b and 12b are made of relatively inexpensive polycrystalline ferrite, permalloy, or the like.
The tip portions 11a, 12a are the core halves 11, 1.
It is provided so as to protrude by a predetermined amount from the radius length of 2, and constitutes a head portion to be described later. However, such first and second core halves 11 and 12 are aligned with a predetermined gap (gap) with a straight line surface forming a semicircular chord as the abutting surface.
G is provided, and they are butted against each other and joined, and are integrated into one circular plate shape. This joining is performed, for example, using an organic adhesive or by glass welding, and is performed by regulating the dimensions of the gap G with high precision. This gap G becomes the head gap of the magnetic head portion formed by the joined body of the tips 11a and 12a. The magnetic head section is excited by the winding wire 14 wound through the winding groove 13 provided inside the tip of the magnetic head section, forming a magnetic path to record signals on the magnetic tape slidingly in contact with the gap surface. Perform playback.
つまり、このような２つの磁気ヘツド部は、第
１および第２のコア半体１１，１２の接合面の両
端に、その接合面を回転中心を通る直径として
180゜対向して形成されている。しかも、回転体と
して機能する第１および第２のコア半体１１，１
２の接合体である円形板状のコアブロツク体の両
端に、コアブロツク体と一体的に設けられたもの
となつている。 In other words, these two magnetic heads are placed at both ends of the joint surfaces of the first and second core halves 11 and 12, with the diameter passing through the joint surfaces as the center of rotation.
They are formed facing each other at 180°. Moreover, the first and second core halves 11, 1 function as rotating bodies.
It is provided integrally with the core block body at both ends of the circular plate-shaped core block body which is the joined body of the two core blocks.
また第１および第２のコア半体１１，１２の接
合面中央部には回転中心位置規制溝１５が設けら
れている。この回転中心位置規制溝１５は、シリ
ンダ１６の回転軸１７に当接して位置規制される
第１のコア半体１１に設けられたＶ字状の溝１５
ａと、回転軸１７の逃げ用の隙間を設定して第２
のコア半体１２に設けられた半円状の溝１５ｂと
からなるものである。これらの溝１５ａ，１５ｂ
は、前記各ヘツド面から等距離となる位置に予め
設けられたものである。しかして、上記溝１５ａ
の２辺に当接する回転軸１７の回転中心と、第１
および第２のコア半体１１，１２の接合体（コア
ブロツク体）の中心位置とが正確に位置決めされ
るようになつている。即ち、コアブロツク体の接
合面が回転軸１７の中心を通る直径上に位置し、
且つ接合面の両端部にそれぞれ形成された磁気ヘ
ツド部のヘツド面から等距離となる位置に規制さ
れるようになつている。これによつて回転中心か
ら各ヘツド面までの距離が高精度に定められてい
る。尚、上記距離は、第２図ｂに示すように先端
ヘツド面がシリンダ１６の周面より所定の量
（Da＝Db）だけ突出する如く定められることは
云うまでもない。 Further, a rotation center position regulating groove 15 is provided at the center of the joint surfaces of the first and second core halves 11 and 12. This rotational center position regulating groove 15 is a V-shaped groove 15 provided in the first core half 11 whose position is regulated by contacting the rotating shaft 17 of the cylinder 16.
a and the clearance gap for the rotation shaft 17, and the second
It consists of a semicircular groove 15b provided in the core half body 12 of. These grooves 15a, 15b
are provided in advance at positions equidistant from each head surface. Therefore, the groove 15a
The center of rotation of the rotating shaft 17 abuts on two sides of the first
and the center position of the joined body (core block body) of the second core halves 11 and 12 are accurately positioned. That is, the joint surface of the core block body is located on the diameter passing through the center of the rotating shaft 17,
In addition, the magnetic heads are regulated at positions equidistant from the head surfaces of the magnetic head portions formed at both ends of the joint surface. This allows the distance from the center of rotation to each head surface to be determined with high precision. It goes without saying that the above distance is determined so that the tip head surface protrudes from the circumferential surface of the cylinder 16 by a predetermined amount (Da=Db), as shown in FIG. 2b.
一方、接合により一体化された第１および第２
のコア半体１１，１２の上面には、その中央部に
回転中心と同軸的に回転コア１８，１９が設けら
れている。これらの回転コア１８，１９は同心円
状に設けられた溝内に、SiO2やAl2O3等の絶縁膜
とAu、Cu等の導体とを交互に積層してループ状
に構成されるもので、その端部を前記磁気ヘツド
部の巻線１４に接続している。回転コア１８，１
９はシリンダ１６の内部に同様にして形成された
固定コア２０，２１に所定のギヤツプＳを隔てて
対向して、回転トランスを形成するものである。
しかして、この回転トランスを介して前記磁気ヘ
ツド部と外部回路装置との信号送受が非接触に行
われる。 On the other hand, the first and second
On the upper surfaces of the core halves 11 and 12, rotating cores 18 and 19 are provided at the center thereof coaxially with the center of rotation. These rotating cores 18 and 19 are constructed in a loop shape by alternately laminating insulating films such as SiO 2 or Al 2 O 3 and conductors such as Au or Cu in concentric grooves. The end thereof is connected to the winding 14 of the magnetic head section. Rotating core 18,1
Reference numeral 9 faces fixed cores 20 and 21, which are similarly formed inside the cylinder 16, with a predetermined gap S therebetween to form a rotary transformer.
Thus, signals are exchanged between the magnetic head section and the external circuit device in a non-contact manner via this rotary transformer.
このように本発明に係る回転磁気ヘツドは180゜
対向する２つの磁気ヘツド部および回転トランス
の回転コア１８，１９を接合されたコア半体１
１，１２上に一体的に形成した構造となつてい
る。しかも、上記２つの磁気ヘツド部をコア半体
１１，１２上の回転中心を通り、且つ回転中心か
ら等距離位置に高精度に位置決めして設けている
上、回転トランスの回転コア１８，１９もまた高
精度に位置決めして一体的に設けている。その
上、コア半体１１，１２に直接設けられた位置規
制溝１５により、回転軸１７に対して高精度に回
転中心位置を規制して組込む構造となつているの
で、その全てについて仕様寸法精度を十分高くす
ることができる。またこのように一体化構造であ
るが故にその小型化を図ることが非常に容易であ
り、その製作においても格別な工夫を要しない。
従つて、回転半径５cm以下のコンパクトな回転磁
気ヘツドを実現することも極めて容易となる。 As described above, the rotating magnetic head according to the present invention has two magnetic head parts facing each other at 180 degrees and a core half 1 which is joined to the rotating cores 18 and 19 of the rotating transformer.
It has a structure in which it is integrally formed on 1 and 12. Moreover, the two magnetic heads are positioned with high precision so as to pass through the center of rotation on the core halves 11 and 12 and equidistant from the center of rotation, and the rotating cores 18 and 19 of the rotary transformer are In addition, it is positioned with high precision and is integrally provided. In addition, the position regulating grooves 15 provided directly on the core halves 11 and 12 are structured to regulate the rotation center position with high precision with respect to the rotating shaft 17, so that all of the core halves have the specified dimensional accuracy. can be made sufficiently high. Furthermore, because of this integrated structure, it is very easy to reduce the size of the device, and no special efforts are required to manufacture it.
Therefore, it is extremely easy to realize a compact rotating magnetic head with a rotation radius of 5 cm or less.
尚、製作に際しては、磁性材からなる円柱状ブ
ロツク体を縦方向に等分割した半円柱状ブロツク
体にそれぞれ溝を設けたのち、所定のギヤツプＧ
を隔ててこれらを接合し、その後、所定厚みに切
断して円板状の磁性体板を形成する。そして、ヘ
ツド面にむかつてテーパを設ける等してトラツク
幅TWの設定を行うと共に、エツチング等によつ
てコア溝を設け、このコア溝に等体のループを埋
設して回転コア１８，１９を形成し、上記コア端
部に巻線１４を接続するようにすればよい。この
ようにして、本発明に係る回転磁気ヘツドは、量
産性良く、しかも高精度に製作することができ
る。 In addition, during manufacturing, grooves are formed in each semi-cylindrical block made by dividing a cylindrical block made of magnetic material into equal parts in the vertical direction, and then a predetermined gap G is formed.
These are joined with a distance between them, and then cut to a predetermined thickness to form a disc-shaped magnetic material plate. Then, the track width TW is set by providing a taper toward the head surface, and a core groove is provided by etching or the like, and an equal-sized loop is buried in this core groove to form the rotating cores 18 and 19. The winding 14 may be connected to the core end. In this way, the rotating magnetic head according to the present invention can be mass-produced with high precision.
またこのような構造の回転磁気ヘツドによれ
ば、シリンダ１６に組込むに際して、単に回転軸
１７に位置規制溝１５を嵌め込むだけで、その回
転によつてＶ字溝１５ａの辺に回転軸１７が当接
して高精度な位置決めが自動的に行われることに
なるので、ヘツド交換を含むVTRのメインテナ
ンスやその組立て製作が非常に簡単となると云う
従来構造ヘツドには全く期待することのできない
絶大なる効果を奏する。 Further, according to the rotating magnetic head having such a structure, when it is assembled into the cylinder 16, the position regulating groove 15 is simply fitted into the rotating shaft 17, and the rotating shaft 17 is placed on the side of the V-shaped groove 15a by the rotation. Because high-precision positioning is automatically performed by contact, maintenance of the VTR including head replacement and assembly and production are extremely simple, a tremendous effect that could not be expected from conventionally structured heads. play.
尚、本発明は上記した実施例に限定されるもの
ではない。例えば第３図に示すようにヘツド部の
先端（斜線部）のみを耐摩耗性の優れた高透磁率
高磁束密度材料で形成し、他の部分を高透磁率材
料で形成して、所謂クレバイト型のヘツドとして
もよい。またヘツド面と他のコア体周面部とを同
一外周面として、磁気テープとの摺接を円滑によ
るようにしてもよい。更にコア半体全てを単結晶
あるいは多結晶フエライトやセンダスト系の単一
材料で形成することも勿論可能である。また第４
図に示すように矩形状のコア半体を用いることも
可能であり、中央部コア体２５と先端部コア体２
６との間に非磁性体部２７を設けて、両者間の磁
路結合によるクロストークの発生を防ぐようにし
てもよい。更には、回転中心位置規制溝１５の形
状や各部の寸法等はヘツド仕様に応じて定めれば
よいものである。要するに本発明はその要旨を逸
脱しない範囲で種々変形して実施することができ
る。 Note that the present invention is not limited to the above embodiments. For example, as shown in Figure 3, only the tip of the head (shaded area) is made of a material with high magnetic permeability and high magnetic flux density that has excellent wear resistance, and the other parts are made of a material with high magnetic permeability. It can also be used as a mold head. Alternatively, the head surface and the other core body peripheral surface may be formed into the same outer peripheral surface so that sliding contact with the magnetic tape can be made smooth. Furthermore, it is of course possible to form all the core halves from a single material such as single crystal, polycrystalline ferrite, or sendust. Also the fourth
As shown in the figure, it is also possible to use rectangular core halves, with a central core body 25 and a tip core body 2.
A non-magnetic material portion 27 may be provided between the two to prevent crosstalk due to magnetic path coupling between the two. Furthermore, the shape of the rotation center position regulating groove 15, the dimensions of each part, etc. may be determined according to the specifications of the head. In short, the present invention can be implemented with various modifications without departing from the gist thereof.
第１図ａ〜ｃは従来の回転磁気ヘツドの一例を
示す図、第２図ａ，ｂは本発明の一実施例を示す
図、第３図および第４図はそれぞれ本発明の別の
実施例を示す図である。
１１，１２……コア半体、１３……巻線溝、１
４……巻線、１５……回転中心位置規制溝、１６
……シリンダ、１７……回転軸、１８，１９……
回転コア、２０，２１……固定コア、２７……非
磁性体部。
FIGS. 1 a to c are views showing an example of a conventional rotating magnetic head, FIGS. 2 a and b are views showing an embodiment of the present invention, and FIGS. 3 and 4 are views showing another embodiment of the present invention, respectively. It is a figure which shows an example. 11, 12... Core half, 13... Winding groove, 1
4... Winding wire, 15... Rotation center position regulating groove, 16
... Cylinder, 17 ... Rotating shaft, 18, 19 ...
Rotating core, 20, 21... Fixed core, 27... Non-magnetic material part.
Claims (1)
および第２のコア半体を所定の間隙を設けて突き
合せて接合し、その突き合せ面の両端をヘツド面
とする180゜対向する２つの磁気ヘツド部を形成す
ると共に、上記第１および第２のコア半体の突き
合せ面の上記各ヘツド面から等距離にある位置に
ヘツド回転中心軸に当接する回転中心位置規制溝
を設け、且つ回転トランスを構成する固定コアに
対向して信号送受を行う回転コアを前記第１およ
び第２のコア半体上に設けたことを特徴とする回
転磁気ヘツド。 ２ 第１および第２のコア半体は、回転コアを設
ける中央部の高透磁率磁性体とは異にする耐摩耗
性に優れた高透磁率高磁束密度の磁性体を上記中
央部磁性体の両側部に接合した接合構造体からな
るものである特許請求の範囲第１項記載の回転磁
気ヘツド。 ３ 中央部磁性体と両端部磁性体とは、非磁性体
部を介して接合されたものであつて、各磁性体部
にそれぞれ形成される磁路間のクロストークを防
止する構造を有するものである特許請求の範囲第
２項記載の回転磁気ヘツド。[Claims] 1. A first device including a magnetic material forming a magnetic path at both ends.
and the second core halves are butted and joined with a predetermined gap to form two magnetic head portions facing each other at 180° with both ends of the abutting surfaces serving as head surfaces, and the first and second core halves are A rotation center position regulating groove is provided at a position equidistant from each of the head surfaces on the abutting surface of the two core halves, and the rotation center position regulating groove contacts the rotation center axis of the head, and is opposed to the fixed core constituting the rotary transformer for signal transmission and reception. 1. A rotating magnetic head, characterized in that rotating cores for performing this are provided on the first and second core halves. 2 The first and second core halves are made of a magnetic material with high permeability and high magnetic flux density with excellent wear resistance, which is different from the high magnetic permeability magnetic material in the center where the rotating core is provided. 2. A rotating magnetic head according to claim 1, comprising a joining structure joined to both sides of the head. 3. The central magnetic body and both end magnetic bodies are joined via a non-magnetic body, and have a structure that prevents crosstalk between the magnetic paths formed in each magnetic body. A rotating magnetic head according to claim 2.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7049081A JPS57186226A (en) | 1981-05-11 | 1981-05-11 | Rotating magnetic head |
| US06/373,105 US4509084A (en) | 1981-05-11 | 1982-04-29 | Rotary magnetic head |
| EP82104080A EP0064765B1 (en) | 1981-05-11 | 1982-05-11 | Rotary magnetic head |
| DE8282104080T DE3266637D1 (en) | 1981-05-11 | 1982-05-11 | Rotary magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7049081A JPS57186226A (en) | 1981-05-11 | 1981-05-11 | Rotating magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57186226A JPS57186226A (en) | 1982-11-16 |
| JPH0215921B2 true JPH0215921B2 (en) | 1990-04-13 |
Family
ID=13433005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7049081A Granted JPS57186226A (en) | 1981-05-11 | 1981-05-11 | Rotating magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57186226A (en) |
-
1981
- 1981-05-11 JP JP7049081A patent/JPS57186226A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57186226A (en) | 1982-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR860001072B1 (en) | Rotary Magnetic Head Device | |
| US4509084A (en) | Rotary magnetic head | |
| JPH0215921B2 (en) | ||
| US5084797A (en) | Magnetic head with two canted gaps and the manufacturing method thereof | |
| JPS5814311A (en) | Composite thin film magnetic head | |
| JPH0245241B2 (en) | ||
| US5144741A (en) | Method of manufacturing a magnetic head with two canted gaps | |
| JPS59168609A (en) | Rotary transformer | |
| JPH0124733Y2 (en) | ||
| JPS6226612A (en) | Composite type single magnetic pole magnetic head | |
| JPS6220113A (en) | Composite type magnetic head and its manufacture | |
| JPS61140116A (en) | Separate-type rotary transformer | |
| JP2613218B2 (en) | Magnetic head | |
| JPH0521694Y2 (en) | ||
| JP3511739B2 (en) | Head element height adjusting apparatus and magnetic tape recording and / or reproducing apparatus including the same | |
| EP0913812A1 (en) | Thin-film technology for a head drum | |
| JPS61289513A (en) | Magnetic head | |
| JPS62124618A (en) | Magnetic head and its manufacture | |
| JPS62121914A (en) | Magnetic head | |
| JPS59121621A (en) | Rotary magnetic head device | |
| JPS6372104A (en) | Rotary transformer | |
| JPH03127305A (en) | Magnetic head | |
| JPS6168712A (en) | Manufacture of digital magnetic head | |
| JPH11328623A (en) | Magnetoresistive magnetic head and method of manufacturing the same | |
| JPH0863726A (en) | Magnetic head device |