JPS6029987A - Floating type magnetic head - Google Patents

Floating type magnetic head

Info

Publication number
JPS6029987A
JPS6029987A JP13678583A JP13678583A JPS6029987A JP S6029987 A JPS6029987 A JP S6029987A JP 13678583 A JP13678583 A JP 13678583A JP 13678583 A JP13678583 A JP 13678583A JP S6029987 A JPS6029987 A JP S6029987A
Authority
JP
Japan
Prior art keywords
floating
core
slider
magnetic head
medium surface
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
Application number
JP13678583A
Other languages
Japanese (ja)
Inventor
Toshio Fujimoto
敏夫 藤本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP13678583A priority Critical patent/JPS6029987A/en
Publication of JPS6029987A publication Critical patent/JPS6029987A/en
Pending legal-status Critical Current

Links

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
    • G11B5/58—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 provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE:To always keep a gap constant between the surface of a medium and a record/reproduction core by providing a pressure room into a floating slider and moving a mobile matter set at an opening part of the pressure room in response to the intensity of an air current. CONSTITUTION:An air inflow port 4 is formed at a place near the tip of a floating surface 2 where an air current is supplied, and a pressure room 5 linked to the port 4 is provided into a floating slider 1A. A mobile matter 7 containing a flexible film is provided at an opening part 6 of the surface 2, and a record/reproduction core 8 is set to the matter 7. In such a constitution, the internal pressure of the room 5 is increased by the air current when the floating degree of the slider 1A is large. Thus the matter 7 is extended toward a medium surface 3 to decrease the space between the core 8 and the surface 3. While the move-down amount of the core 8 is small when the floating degree of the slider 1A is small.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は電子計算機の外部記憶装置に使用されている磁
気ディスクなどに使用される浮動形磁気ヘッドに関する
。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a floating magnetic head used in a magnetic disk used in an external storage device of an electronic computer.

〔発明の技術的背景〕[Technical background of the invention]

電子計算機の外部記憶装置の記録媒体とし°Ｃ１磁気デ
ィスクが一般に使用されている。この磁気ディスクにデ
ータを書き込み（記録）、または読み出す（再生）磁気
ヘッドとしては、通常、磁気ディスクの磁気記録媒体面
（以下、媒体面と称す）と所定間隔を有した状態で磁気
ディスクへの記録・再生を行う浮動形磁気ヘッドが用い
られている。C1 magnetic disks are generally used as recording media for external storage devices of electronic computers. A magnetic head that writes (records) or reads (reproduces) data on the magnetic disk is usually used to write (record) or read (reproduce) data onto the magnetic disk at a predetermined distance from the magnetic recording medium surface (hereinafter referred to as the medium surface) of the magnetic disk. A floating magnetic head is used for recording and reproducing.

この浮動形磁気ヘッドにおいては、磁気ｆ４スクの回転
によシ発生する空気流の作用により浮動スライダが浮揚
力を受け、浮動スライダに設けられた磁気記録再生コア
（以下コアと称す）が、磁気ディスクの媒体面と所定間
隔を維持した状態で記録拳再生を行う構成とされている
。そして、このような浮動形磁気ヘッドは、媒体面とコ
アが接触することなく、記録・再生を行うことができる
ため、記録・再生に要する時間を短縮するととができる
ばがシでなく、媒体面とコアとの摩耗による性能劣化も
起ζりにくいという長所を有している。In this floating magnetic head, the floating slider receives a levitation force due to the action of the airflow generated by the rotation of the magnetic F4 disk, and the magnetic recording/reproducing core (hereinafter referred to as the core) provided in the floating slider moves magnetically. It is configured to perform recorded playback while maintaining a predetermined distance from the medium surface of the disc. Since such a floating magnetic head can perform recording and playback without contact between the medium surface and the core, it is possible to shorten the time required for recording and playback. It has the advantage that performance deterioration due to wear between the surface and the core is less likely to occur.

〔背景技術の問題点〕[Problems with background technology]

しかしながら、上記した従来の浮動形磁気ヘッドにおい
ては、磁気ディスクの回転起動、停止時など、磁気ディ
スクの回転数の低い時にあっては、磁気ディスクと磁気
ヘッドとが接触摺動する状態となるため、コアに摩耗、
欠けなどの損傷が発生し、磁気ｆイスク装置としての性
能、寿命に致命的な影響を与えていた。また、磁気ディ
スクの回転数の変化、さらに１えば、磁気ディスクの回
転数が一定であっても、磁気ヘッドが磁気テ′イスクの
内周及び外周へアクセスする際に、磁気ヘッドと磁気デ
ィスクとの相対速度が変化するため、浮動スライダに及
はす浮揚力に変化が生じていた。However, in the conventional floating magnetic head described above, when the rotation speed of the magnetic disk is low, such as when the rotation of the magnetic disk is started or stopped, the magnetic disk and the magnetic head come into contact and slide. , wear on the core,
Damage such as chipping occurred, which had a fatal impact on the performance and life of the magnetic f-isk device. In addition, changes in the number of rotations of the magnetic disk, and even if the number of rotations of the magnetic disk is constant, the relationship between the magnetic head and the magnetic disk may change when the magnetic head accesses the inner and outer circumferences of the magnetic disk. Due to the change in the relative velocity of the floating slider, there was a change in the buoyancy force exerted on the floating slider.

そして、この浮動スライダに及ばず浮揚力の変化によっ
て、コアと媒体面との間隙に大きな変化が生じ、高品質
の記録・再生信号を得る妨げとなっていた。Further, due to changes in the buoyancy force that are not applied to the floating slider, a large change occurs in the gap between the core and the medium surface, which is an obstacle to obtaining high-quality recording/reproduction signals.

〔発明の目的〕[Purpose of the invention]

本発明は、上述した従来の欠点に鑑みてなされたもので
心シ、磁気ディスクの回転数が低い場合であっても、コ
アが損傷することがなく、また、磁気ディスクと浮動形
磁気ヘッドとの相対速度に変化が生じた場合であっても
、媒体面とコアとの間［を一定に保つことができる浮動
形磁気ヘッドを提供することを目的とする。The present invention was made in view of the above-mentioned drawbacks of the conventional technology, and the core is not damaged even when the rotational speed of the magnetic disk is low, and the magnetic disk and the floating magnetic head can be easily connected to each other. An object of the present invention is to provide a floating magnetic head that can maintain a constant distance between a medium surface and a core even when the relative velocity of the medium changes.

〔発明の概要〕[Summary of the invention]

そのため、本発明からなる浮動形磁気ヘッドにおいては
、磁気ディスクの媒体面に対向するように形成され、媒
体面の運動によシ生ずる空気流の作用によって、浮揚力
を受ける浮動スライダの浮動面に、空気流入口を形成し
、前記浮動面側に開口部を有し、前記空気流入口より導
入された空気流によシ、内部圧力が高められる圧力室を
前記浮動スライダ内部に設け、さらに、この圧力室の内
部圧力が高められたときに、媒体面側に移動するように
された移動体を前記開口部内部に設け、この移動体に、
前記媒体面に対向するように、コアを設けることによシ
、空気流が弱く、前記媒体面と前記浮動面とが接触する
状態にあっては、コアが前記媒体面と離間した状態とさ
れ、空気流が強く、前記媒体面と浮動面とが犬きぐ離間
した状態にあっては、前記移動体が媒体面側に押し出さ
れることによシ、媒体面とコアとは、一定の間隔を維持
した状態とされ、上記目的を達成している。Therefore, in the floating magnetic head according to the present invention, the floating surface of the floating slider, which is formed to face the medium surface of the magnetic disk and receives a buoyant force due to the action of the air flow generated by the movement of the medium surface. , a pressure chamber is provided inside the floating slider, which forms an air inlet, has an opening on the floating surface side, and whose internal pressure is increased by the air flow introduced from the air inlet; A moving body configured to move toward the medium surface side when the internal pressure of the pressure chamber is increased is provided inside the opening, and this moving body has a
By providing the core so as to face the medium surface, the core is separated from the medium surface when the air flow is weak and the medium surface and the floating surface are in contact with each other. When the air flow is strong and the medium surface and the floating surface are far apart, the moving body is pushed toward the medium surface, so that the medium surface and the core are separated by a certain distance. The above objectives have been achieved.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の実施例につき第１図乃至第９図を参照し
て詳述する。Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 9.

第１図乃至第４図は第１の実施例を示した説明図である
。これらの図において、ＩＡは浮動スライダであシ、２
は磁気ディスクの媒体面３に対向するように形成された
浮動スライダＩＡの浮動面である。この浮動面２は、媒
体面３が運動したときに生ずる空気流の作用によって浮
揚力を受け浮上しやすい形状とされている。一方、空気
流の流入する浮動面２の先端付近には、浮動スライダＩ
Ａ内に空気流を導入するべく、空気流入口４が穿設され
ている。そして、この空気流入口４と通じた圧力室５が
、浮動スライダＩＡの内部に穿設されておル、空気流入
口４よ勺導入された空気流によシ圧力室５の内部圧力が
上昇するものとされている。一方、この圧力室５には、
前記浮動面２に開口部６が形成されておシ、この開口部
６の内部には、伸縮自在な膜で形成された移動体７が設
けられている。そして、この移動体７には、媒体面３と
対向するように、コア８が設けられている。なお、この
移動体７は、前記した圧力室５の内部圧力が上昇してい
ない状態にあっては、浮動面２の内側にコア８の表面が
位置ずけられるように、開口部６に設けられている。FIGS. 1 to 4 are explanatory diagrams showing a first embodiment. In these figures, IA is a floating slider and 2
is the floating surface of the floating slider IA formed to face the medium surface 3 of the magnetic disk. The floating surface 2 has a shape that allows it to receive a buoyancy force and easily float due to the action of airflow generated when the medium surface 3 moves. On the other hand, near the tip of the floating surface 2 into which the airflow flows, there is a floating slider I.
An air inlet 4 is bored in order to introduce an air flow into A. A pressure chamber 5 communicating with this air inlet 4 is bored inside the floating slider IA, and the internal pressure of the pressure chamber 5 increases due to the air flow introduced through the air inlet 4. It is assumed that On the other hand, in this pressure chamber 5,
An opening 6 is formed in the floating surface 2, and a movable body 7 formed of a stretchable membrane is provided inside the opening 6. The moving body 7 is provided with a core 8 so as to face the medium surface 3. The movable body 7 is provided in the opening 6 so that the surface of the core 8 is positioned inside the floating surface 2 when the internal pressure of the pressure chamber 5 is not rising. It is being

このように構成することにょシ、浮動スライダＩＡと媒
体面３との相対速度が大きく、したがって浮動スライダ
ＩＡの浮上量が大きい場合には、空気流による圧力室５
の内部圧力が大きく上昇し、移動体（伸縮膜）７は媒体
面３方向へ大きく伸張するため、コア８社、媒体面３と
の間隔を狭めるべく、媒体面３の方向に大きく下降する
こととなる。一方、相対速度が小さく、シたがって浮動
スライダＩＡの浮上量が小さい場合には、同様の理由か
ら、コア８の媒体面３方向への下降量は／トさいものと
なる。そして、空気流入口４、圧力室５の配置、形状及
び移動体７の伸縮度を調節することによシ、浮動スライ
ダＩＡと媒体面３との相対速度の大小にかかわらず、媒
体面３とコア８との間隔を一定の値ｈｏ　に保つことが
できるものである。With this configuration, if the relative velocity between the floating slider IA and the medium surface 3 is large, and therefore the flying height of the floating slider IA is large, the pressure chamber 5 due to the air flow
The internal pressure of the core 8 increases greatly, and the moving body (stretchable membrane) 7 expands greatly in the direction of the medium surface 3. Therefore, the core 8 must descend greatly in the direction of the medium surface 3 in order to narrow the distance between it and the medium surface 3. becomes. On the other hand, if the relative speed is small and therefore the flying height of the floating slider IA is small, the amount of descent of the core 8 in the three directions of the medium surface will be small for the same reason. By adjusting the arrangement and shape of the air inlet 4 and the pressure chamber 5, as well as the degree of expansion and contraction of the moving body 7, it is possible to adjust the relative velocity between the floating slider IA and the medium surface 3. This allows the distance from the core 8 to be maintained at a constant value ho.

第５図及び第６図は、浮動形磁気ヘッドの第２の実施例
を示した説明図であシ、移動体７′をピストン機構で形
成した例を示す。なお、９は、浮動スライダＩＢと移動
体７との間に張架したバネである。5 and 6 are explanatory diagrams showing a second embodiment of the floating magnetic head, and show an example in which the movable body 7' is formed by a piston mechanism. Note that 9 is a spring stretched between the floating slider IB and the moving body 7.

第７図は、浮動形磁気ヘッドの第３の実施例を示した説
明図であり、コア８を、浮動スライダ１ｃの中央付近に
設けた場合を示す。中央付近は浮動スライダｉｃの後部
付近に比べ、浮動面２は、よシ早く浮き上がる場所であ
り、また、全気流人口４と圧力室５との径路が短いため
、空気流の変化に対する反応が早く、磁気ディヌクの起
動、停止時など、コア８と媒体面３との接触が起こシや
すい場合を考慮した場合、コア８の安全には適した場所
であると言える。FIG. 7 is an explanatory diagram showing a third embodiment of the floating magnetic head, in which the core 8 is provided near the center of the floating slider 1c. Near the center, the floating surface 2 floats faster than near the rear of the floating slider IC, and since the path between the total airflow population 4 and the pressure chamber 5 is short, it reacts quickly to changes in airflow. Considering cases where the core 8 and the medium surface 3 are likely to come into contact with each other, such as when the magnetic Dinuk is started or stopped, it can be said that this location is suitable for the safety of the core 8.

第８図及び第９図は浮動形磁気ヘッドの第４の実施例を
示した説明図であり、浮動スライダＩＤの浮動面２側に
凹部を形成することによシ、浮動スライダＩＤの中央の
前後に空気流入口４及び圧力室５を形成した例を示す。8 and 9 are explanatory diagrams showing a fourth embodiment of the floating magnetic head, in which a recess is formed on the floating surface 2 side of the floating slider ID, so that the center of the floating slider ID can be An example is shown in which an air inlet 4 and a pressure chamber 5 are formed at the front and rear.

本実施例においては、コア８を移動体７に埋め込んだ状
態とし、浮動面　□２とコア８の表面とが面一となるよ
うに、移動体７を開口部６に設けた場合を示している。In this embodiment, the core 8 is embedded in the movable body 7, and the movable body 7 is provided in the opening 6 so that the floating surface □2 and the surface of the core 8 are flush with each other. There is.

〔発明の効呆〕[Efficacy of invention]

上述した実施例で示したように、本発明によれば、磁気
ディスクの回転数が低く、浮動スライダと媒体面とが接
触摺動する場合にあっても、コアは媒体面から離れた位
置に保持されるため、媒体面との接触による摩耗、欠け
などの損傷からコアを防ぐことができ、また、浮動スラ
イダと媒体面との相対速度の変化にかかわらず、媒体面
とコアとの間隔を一定に保つことができるため、高品質
の記録・再生信号を得ることができるものであり、その
効呆は大なるものがある。As shown in the embodiments described above, according to the present invention, even when the rotational speed of the magnetic disk is low and the floating slider and the medium surface slide in contact with each other, the core is kept at a position away from the medium surface. This prevents the core from damage such as wear and chipping due to contact with the media surface, and also maintains the distance between the media surface and the core regardless of changes in the relative speed between the floating slider and the media surface. Since it can be kept constant, it is possible to obtain high-quality recording/playback signals, and its effectiveness is great.

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

第１図乃至第４図は本発明の第１実施例であり、第１図
は、磁気記録媒体面と対向する浮動面側から浮動形磁気
ヘッドを示した平面図、第２図は第１図の■−■線断面
図、第３図及び第４図は、移動本付近を特に示した第２
図の一部拡大図であシ、第３図は浮動スライダと磁気記
録媒体面との相対速度の小さい状態、第４図は相対速度
の大きい状態を示す。酊５図及び第６１ｉ９は、本発明
の第２実施例であシ、第５図は、移動体をピストン機構
で構成した場合を示した浮動形磁気ヘッドの側断面図、
第６図は、移動体付近を拡大して示した第５図の一部拡
大図である。第７図は、本発明の第３実施例を示すもの
であシ、浮〃１形磁気ヘッドの側断面図である。第８図
及び第９図は本発明の第４実施例であシ、第８図は浮動
形磁気ヘッドを浮動面側から示した平面図、第９図は第
８図の■−■線断面図である。 ＩＡ、ＩＢ、ＩＣ，ＩＤ・・・浮動スライダ、２・・・
浮動面、３・・・磁気記録媒体面、４・・・空気流入口
、５・・・圧力室、６・・・開口部、７，７′・・・移
動体、８・・・磁気記録再生コア。 代理人弁理士　則　近　憲　佑（ほか１名）第１図　第
２図 第３図　第４図 １Δ1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a plan view showing the floating magnetic head from the side of the floating surface facing the magnetic recording medium surface, and FIG. The cross-sectional view along the ■-■ line in the figure, Figures 3 and 4 are the 2nd section showing the vicinity of the moving book.
FIG. 3 shows a state where the relative speed between the floating slider and the magnetic recording medium surface is small, and FIG. 4 shows a state where the relative speed is large. 5 and 61i9 show a second embodiment of the present invention, and FIG. 5 is a side sectional view of a floating magnetic head in which the moving body is constructed with a piston mechanism.
FIG. 6 is a partially enlarged view of FIG. 5 showing an enlarged view of the vicinity of the moving body. FIG. 7 shows a third embodiment of the present invention and is a side sectional view of a floating type 1 magnetic head. 8 and 9 show a fourth embodiment of the present invention, FIG. 8 is a plan view of a floating magnetic head seen from the floating surface side, and FIG. 9 is a cross section taken along the line ■-■ in FIG. 8. It is a diagram. IA, IB, IC, ID...Floating slider, 2...
Floating surface, 3... Magnetic recording medium surface, 4... Air inlet, 5... Pressure chamber, 6... Opening, 7, 7'... Moving body, 8... Magnetic recording Recycled core. Representative Patent Attorney Kensuke Chika (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 1Δ

Claims (1)

【特許請求の範囲】[Claims] 内部に圧力室が設けられ磁気記録媒体と対向する洋動面
に前記圧力室へ空気を導入する空気流入口及び前記圧力
室へ通じる開口部を有する浮動スライダと、前記開口部
に設けられ前記圧力室の圧力に応じて移動する移動体と
、この移動体に取付けられた磁気記録再生コアとを具備
したことを特徴とする浮動形磁気ヘッド。a floating slider having a pressure chamber therein and having an air inlet for introducing air into the pressure chamber and an opening communicating with the pressure chamber on a sliding surface facing the magnetic recording medium; 1. A floating magnetic head comprising a moving body that moves according to the pressure in a chamber, and a magnetic recording/reproducing core attached to the moving body.
JP13678583A 1983-07-28 1983-07-28 Floating type magnetic head Pending JPS6029987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13678583A JPS6029987A (en) 1983-07-28 1983-07-28 Floating type magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13678583A JPS6029987A (en) 1983-07-28 1983-07-28 Floating type magnetic head

Publications (1)

Publication Number Publication Date
JPS6029987A true JPS6029987A (en) 1985-02-15

Family

ID=15183456

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13678583A Pending JPS6029987A (en) 1983-07-28 1983-07-28 Floating type magnetic head

Country Status (1)

Country Link
JP (1) JPS6029987A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5128821A (en) * 1989-05-29 1992-07-07 Hitachi, Ltd. Flying head slider and magnetic disk unit employing same
US5157568A (en) * 1989-12-12 1992-10-20 Sharp Kabushiki Kaisha Floating type magnetic head device
US5251083A (en) * 1989-05-29 1993-10-05 Hitachi, Ltd. Flying head slider and method of producing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5128821A (en) * 1989-05-29 1992-07-07 Hitachi, Ltd. Flying head slider and magnetic disk unit employing same
US5251083A (en) * 1989-05-29 1993-10-05 Hitachi, Ltd. Flying head slider and method of producing the same
US5157568A (en) * 1989-12-12 1992-10-20 Sharp Kabushiki Kaisha Floating type magnetic head device

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