JPS6131380Y2 - - Google Patents

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Publication number
JPS6131380Y2
JPS6131380Y2 JP5016085U JP5016085U JPS6131380Y2 JP S6131380 Y2 JPS6131380 Y2 JP S6131380Y2 JP 5016085 U JP5016085 U JP 5016085U JP 5016085 U JP5016085 U JP 5016085U JP S6131380 Y2 JPS6131380 Y2 JP S6131380Y2
Authority
JP
Japan
Prior art keywords
floating
head
force
suction
fluid
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
Application number
JP5016085U
Other languages
Japanese (ja)
Other versions
JPS6145774U (en
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 filed Critical
Priority to JP5016085U priority Critical patent/JPS6145774U/en
Publication of JPS6145774U publication Critical patent/JPS6145774U/en
Application granted granted Critical
Publication of JPS6131380Y2 publication Critical patent/JPS6131380Y2/ja
Granted legal-status Critical Current

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

Description

【考案の詳細な説明】 この考案は回転円板面に沿つての流体の流れに
よる生ずる力を利用した浮動ヘツド装置に関する
ものである。
DETAILED DESCRIPTION OF THE INVENTION This invention relates to a floating head device that utilizes the force generated by the flow of fluid along the surface of a rotating disk.

一般的に、浮動ヘツド装置の保安機構として磁
気円板が所定の回転数に達してから、電磁力等の
外力によりヘツドの浮動面を回転円板面に接近さ
せ、バネ等の外力によりヘツドを押圧する方法が
行なわれているが、近年回転円板面に沿つての空
気の流れにより、流れの方向に対して末広がりな
膨張すき間に生ずる吸引力を利用した、円板の回
転、停止にともなつて自己吸着、離脱可能な自己
保安方式浮動ヘツド装置が発表されている。自己
吸着、離脱方式浮動ヘツド装置は外部からの付加
機構を必要とせず、自己保安機能を実現できる
が、かかる末広がりなすき間に生ずる空気流によ
る吸引力はその作用中心が空気の流入端側に片寄
つているため、各浮動面が均一に加圧されず、各
浮動面の浮動距離のバラツキをきたすという問題
があつた。
Generally, as a safety mechanism for floating head devices, after the magnetic disk reaches a predetermined rotational speed, an external force such as electromagnetic force is used to bring the floating surface of the head close to the surface of the rotating disk, and an external force such as a spring is used to move the head. However, in recent years, a method has been used to rotate and stop the disc by utilizing the suction force generated by the expansion gap that widens in the direction of flow due to air flow along the surface of the rotating disc. A self-secure floating head device that is self-adsorbing and detachable has been announced. A self-adsorption/removal type floating head device does not require an external additional mechanism and can realize a self-safety function, but the center of action of the suction force due to the airflow generated in such a widening gap is biased toward the air inflow end. As a result, each floating surface was not pressurized uniformly, resulting in variations in the floating distance of each floating surface.

この様な従来の複数の浮動面を有した自己吸着
離脱方式浮動ヘツド装置を第1図〜第3図により
説明する。第1図はその斜視図を示し、第2図、
第3図はその動作原理を示す側面図である。第1
図において、複数のヘツド素子1a,1b,1c
の浮動面2a,2b,2cが吸着板3の吸着面4
からの突出量が回転円板面に沿つての空気の流入
側、流出側でそれぞれH1,H2(H1<H2)となる
ごとくに規制されれている。さらにこれらヘツド
素子1a,1b,1c、吸着板3を有する可動部
5はばね6に接続されいる。また吸着板3はヘツ
ド素子1a,1b,1cを固定するための固定板
の役目も兼用しており、またヘツド素子1a,1
b,1cの浮動面2a,2b,2cは同一平面上
にあるごとくに組立てられている。
A conventional self-adsorption/separation type floating head device having a plurality of floating surfaces will be explained with reference to FIGS. 1 to 3. Figure 1 shows its perspective view, Figure 2,
FIG. 3 is a side view showing the principle of operation. 1st
In the figure, a plurality of head elements 1a, 1b, 1c
The floating surfaces 2a, 2b, 2c are the suction surface 4 of the suction plate 3.
The amount of protrusion from the rotary disk is regulated to be H 1 and H 2 (H 1 <H 2 ) on the air inflow side and air outflow side, respectively, along the rotating disk surface. Furthermore, the movable part 5 having these head elements 1a, 1b, 1c and the suction plate 3 is connected to a spring 6. The suction plate 3 also serves as a fixing plate for fixing the head elements 1a, 1b, 1c, and also serves as a fixing plate for fixing the head elements 1a, 1b, 1c.
The floating surfaces 2a, 2b, and 2c of b and 1c are assembled so that they are on the same plane.

次に磁気円板7が停止している動作前の状態を
第2図に示し説明する。第2図に於て、浮動面2
a,2b,2cと磁気円板7の表面との距離が初
期位置h0となるようにばね6を介して、ヘツド固
定ブロツク(図示せず)に固定されている。この
状態で磁気円板7の表面と吸着面4は回転円板表
面に沿つての空気の流れの流入側および流出側で
のすき間がそれぞれh0+H1,h0+H2(H1<H2)な
る末広がりすき間を形成する。磁気円板7が起動
し、円板表面に沿つての空気流の速度が増大する
につれて、末広がりすき間を流れる空気流により
吸着面4に吸引力が作用し可動部5が回転磁気円
板7方向へ吸引される。第3図に示す磁気円板7
の移動速度がUなる定常状態ではヘツド素子1
a,1b,1cの浮動面2a,2b,2cに生ず
る浮上力f1a,f1b,f1c、吸着面4に生ずる吸引力
f2、ばね6による力F1がバランスするような浮動
距離h1a,h1b,h1cを保つて安定浮動する。浮上
力f1a,f1b,f1cおよびばね6の歪に比例したばね
力F1は可動部5を回転磁気円板7面から遠ざけ
る方向に作用し、吸気力f2は近づける方向に作用
する。
Next, a state before operation in which the magnetic disk 7 is stopped is shown in FIG. 2 and will be described. In Figure 2, floating surface 2
They are fixed to a head fixing block (not shown) via a spring 6 so that the distance between a, 2b, 2c and the surface of the magnetic disk 7 is at an initial position h0 . In this state, the gaps between the surface of the magnetic disk 7 and the adsorption surface 4 on the inflow side and outflow side of the air flow along the surface of the rotating disk are h 0 +H 1 and h 0 +H 2 (H 1 <H 2 ) Forms a gap that widens at the end. As the magnetic disc 7 is activated and the speed of the airflow along the disc surface increases, the airflow flowing through the widening gap acts on the suction surface 4, causing the movable part 5 to move in the direction of the rotating magnetic disc 7. is attracted to. Magnetic disk 7 shown in FIG.
In a steady state where the moving speed of head element 1 is U,
levitation force f 1 a, f 1 b, f 1 c generated on floating surfaces 2a , 2b, 2c of a, 1b , 1c , suction force generated on suction surface 4
It floats stably by maintaining floating distances h 1 a, h 1 b, and h 1 c such that f 2 and the force F 1 from the spring 6 are balanced. The levitation forces f 1 a, f 1 b, f 1 c and the spring force F 1 proportional to the strain of the spring 6 act in the direction of moving the movable part 5 away from the surface of the rotating magnetic disk 7, and the suction force f 2 acts in the direction of bringing it closer. It acts on

しかし、第3図に示すごとく、吸着力f2の作用
点が吸着面4の流入端側に片寄つているため可動
部5には反時計方向の回転モーメントが作用し、
こられの回転モーメントが消失するような浮動距
離で安定動作状態に達する。この結果流入端側ヘ
ツド素子の浮動距離h1cに対して、流出端側ヘツ
ド素子1a,1bの浮動距離h1a,h1bが大きくな
り、浮動距離が大巾にばらつく結果となる。この
結果、ヘツド特性のチヤンネル間のバラツキをき
たしていた。
However, as shown in FIG. 3, since the point of action of the suction force f2 is biased towards the inflow end of the suction surface 4, a counterclockwise rotational moment acts on the movable part 5.
Stable operating conditions are reached at a floating distance such that their rotational moment disappears. As a result, the floating distances h 1 a and h 1 b of the outflow end head elements 1a and 1b become larger than the floating distance h 1 c of the inflow end head elements, resulting in a wide variation in the floating distances. As a result, variations in head characteristics between channels have occurred.

この考案はこれらの問題点を解決したもので回
転円板面に沿つての流体の流れにより吸引力を生
ずる複数の吸着面と複数の浮動面とを有した可動
部を構成することにより、回転円板と浮動ヘツド
との浮動距離の均一化を計るようにした浮動ヘツ
ド装置を提供するものである。
This invention solves these problems by configuring a movable part with multiple suction surfaces and multiple floating surfaces that generate suction force by the flow of fluid along the rotating disk surface. To provide a floating head device in which the floating distance between a disk and a floating head is made uniform.

以下この考案の実施例を第4図〜第6図により
説明する。第4図において、第1図と同一符号は
同一又は相当部分を示す。ヘツド固定板を兼用す
る吸着板8は磁気円板の移動方向とほぼ直交する
溝9により2分割された吸着面10a,10bを
有している。また吸着面10a,10bはヘツド
素子1a,1b,1cを固定した場合、浮動面2
a,2b,2cの回転円板面に沿つての空気の流
入側および流出側における。これら浮動面の突出
量がそれぞれH3,H4(H3<H4),H5,H6(H5
H6)となるような傾斜を有している。ここでH3
H5,H4とH6とは等しくしてもよい。以上のヘツ
ド素子1a,1b,1c、吸着板8を有する可動
部11はばな6に連結されている。
Examples of this invention will be described below with reference to FIGS. 4 to 6. In FIG. 4, the same reference numerals as in FIG. 1 indicate the same or corresponding parts. A suction plate 8 which also serves as a head fixing plate has suction surfaces 10a and 10b divided into two by a groove 9 substantially perpendicular to the moving direction of the magnetic disc. In addition, when the head elements 1a, 1b, 1c are fixed, the suction surfaces 10a, 10b are used as the floating surfaces 10a, 10b.
a, 2b, 2c on the air inflow and outflow sides along the rotating disk surfaces. The protrusion amounts of these floating surfaces are H 3 , H 4 (H 3 < H 4 ), H 5 , H 6 (H 5 < H 4 ), respectively.
H 6 ). Here H 3 and
H 5 , H 4 and H 6 may be equal. The movable part 11 having the head elements 1a, 1b, 1c and the suction plate 8 described above is connected to the lever 6.

次に磁気円板7が停止している動作前の状態を
第5図に示し説明する。浮動面2a,2b,2c
と磁気円板7の表面との距離が初期位置h0となる
ように可動部11はばね6を介してヘツド固定ブ
ロツク(図示せず)に固定されている。
Next, a state before operation in which the magnetic disk 7 is stopped is shown in FIG. 5 and will be described. Floating surfaces 2a, 2b, 2c
The movable part 11 is fixed to a head fixing block (not shown) via a spring 6 so that the distance between the head and the surface of the magnetic disk 7 is an initial position h0 .

磁気円板7が起動され、円板面の移動速度が増
大するにつれて、回転円板面と吸着面11a,1
1bが形成する末広がりな膨張すき間に生ずる吸
引力f3a,f3bに上り可動部11は回転円板方向に
吸引され回転磁気円板7の移動速度がUに達し安
定動作状態に至る。第6図に示す安定動作状態で
は可動部11を円板面から遠ざける方向に作用す
る浮上力f1a,f1b,f1c、ばね6の歪に比例しした
力F1および近づける方向に作用する吸着面10
a,10bに作用する吸引力f3a,f3b、これらの
力がバランスするような浮動距離h2a,h2b,h2c
で安定浮動状態に達する。
As the magnetic disk 7 is activated and the moving speed of the disk surface increases, the rotating disk surface and the attraction surfaces 11a, 1
The movable portion 11 is attracted in the direction of the rotating disk due to the attractive forces f 3 a and f 3 b generated between the widening expansion gaps formed by the rotating magnetic disks 1b, and the moving speed of the rotating magnetic disk 7 reaches U, resulting in a stable operating state. In the stable operating state shown in FIG. 6, levitation forces f 1 a, f 1 b, f 1 c act in the direction of moving the movable part 11 away from the disk surface, a force F 1 proportional to the strain of the spring 6, and a force F 1 in the direction of moving the movable part 11 closer to it. Adsorption surface 10 that acts on
Attraction forces acting on a and 10b f 3 a, f 3 b, floating distances h 2 a, h 2 b, h 2 c such that these forces are balanced
A stable floating state is reached at .

ばね6の歪に比例した力F1はバネの材質、厚
みを選択することにより充分小さくすることがで
きるので、f1a+f1bとf3a、またf1cとf3bとが
それぞれバランスすることとなり、また吸着力が
分散される結果、吸着力と浮上力の作用点が接近
し、この結果、可動部11に加わる回転モーメメ
ントが著しく軽減される。この結果、各浮動面2
a,2b,2cの浮動距離のバラツキが軽減され
特性の揃つた多チヤンネル浮動ヘツド装置を得る
ことができる。また、第6図の状態で円板の回転
が停止すると流体力f1a,f1b,f1c,f3a,f3b
が消失し、ばね6の歪に比例した引上げ力F1
けが残り、可動部11は第5図に示した動作前の
状態に復帰する。すなわちこの発明の実施例によ
るヘツドは円板の回転停止に伴つて吸着、離脱動
作を行なう自己保安機能を具備しており、回転円
板面と浮動面とが摺動することがないので、信頼
度の高い浮動ヘツド装置を提供することができ
る。
The force F 1 proportional to the strain of the spring 6 can be made sufficiently small by selecting the material and thickness of the spring, so that f 1a + f 1b and f 3a and f 1c and f 3b are balanced. Furthermore, as a result of the attraction force being dispersed, the points of action of the attraction force and the buoyancy force become close to each other, and as a result, the rotational moment applied to the movable portion 11 is significantly reduced. As a result, each floating surface 2
It is possible to obtain a multi-channel floating head device in which variations in the floating distances of a, 2b, and 2c are reduced and the characteristics are uniform. Moreover, when the rotation of the disk stops in the state shown in Fig. 6, the fluid forces f 1a , f 1b , f 1c , f 3a , f 3b
disappears, only the pulling force F1 proportional to the strain of the spring 6 remains, and the movable part 11 returns to the state before operation shown in FIG. That is, the head according to the embodiment of the present invention has a self-safety function that performs adsorption and detachment operations when the disc stops rotating, and the rotating disc surface and the floating surface do not slide, so it is reliable. A high-performance floating head device can be provided.

以上の説明では一つの可動部あたり3個のヘツ
ド素子よりなる多チヤンネルヘツドの場合につい
て述べたが、これらのうちのいくつかは書込、読
出し機能を有しないダミーチツプであつてよい。
もちろん3個以上の複数のヘツド素子よりなる浮
動面を有した可動部であつてもよいことは容易に
理解される。
In the above description, the case of a multi-channel head consisting of three head elements per movable part has been described, but some of these may be dummy chips having no write or read functions.
Of course, it is easily understood that the movable part may have a floating surface consisting of three or more head elements.

また以上の実施例では可動部を支持するバネは
片持バネの場合について述べたが、この発明の効
果は、ジンバルばねその他ばねの形態によらず、
発揮されることはもちろんである。また浮動距離
が1〜2μm程度と比較的大きなことを要求され
る浮動ヘツドにおいては、浮動面の回転円板面に
沿つての空気の流入端側に、浮上力を増大させる
がごとき傾斜面を設けることができる。この場合
においてもこの発明の効果が発発揮されることは
容易に理解されるであろう。
Furthermore, in the above embodiments, the spring supporting the movable part is a cantilever spring, but the effects of the present invention can be obtained regardless of the form of the gimbal spring or other spring.
Of course, it will be demonstrated. In addition, in a floating head that requires a relatively large floating distance of about 1 to 2 μm, an inclined surface that increases the levitation force is installed on the air inflow end side of the floating surface along the rotating disk surface. can be provided. It will be easily understood that the effects of the present invention can be exerted even in this case.

さらに、この考案の実施例の説明中、回転円板
として磁気円板について説明したが他のビデオデ
イスク等の円板について使用可能であり、又は流
体として空気に限定されることはない。
Further, in the description of the embodiments of this invention, a magnetic disk was described as the rotating disk, but other disks such as video disks can be used, and the fluid is not limited to air.

このようにこの考案では記録または読取用回転
円板と対向するヘツド支持用可動部材の上記回転
円板側の面に、上記回転円板の回転時の流体の流
入側から流出側に向け下り勾配に傾斜し、流体の
流れにより上記円板方向に吸引力を生じる吸着面
を流体の流れ方向に沿つて複数形成し、かつ、こ
の各吸着面上に、流体の流れにより、上記吸引力
と反対方向の浮上力を生じさせる浮動面を有する
ヘツドを設けたから、回転円板と浮動ヘツドとの
浮動距勇を均一化させることが出来る。
In this way, in this invention, the surface of the head supporting movable member facing the recording or reading rotating disk has a downward slope from the inflow side to the outflow side of the fluid when the rotating disk rotates. A plurality of suction surfaces are formed along the direction of fluid flow, which are inclined to generate a suction force in the direction of the disc due to the flow of fluid, and on each suction surface, a suction force opposite to the suction force is formed due to the flow of fluid. Since the head is provided with a floating surface that generates a floating force in the direction, the floating distance between the rotating disk and the floating head can be made uniform.

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

第1図は従来の複数の浮動面と吸着板とを有し
た自己吸着、離脱方式の浮動ヘツド装置を示す斜
視図、第2図及び第3図は第1図に示したものの
動作原理を示す側面図で、第4図はこの考案の実
施例による浮動ヘツド装置を示す斜視図、第5図
及び第6図は第4図に示したものの動作原理を示
す側面図である。 図に於て、1a,1b,1cはヘツド素子、2
a,2b,2cは浮動面、6はばね、7は回転円
板としての磁気円板、8は吸着板、9は溝、10
a,10bは吸着面、11は可動部である。なお
図中同一符号は同一又は相当部分を示す。
Fig. 1 is a perspective view showing a conventional self-adsorption/separation type floating head device having a plurality of floating surfaces and suction plates, and Figs. 2 and 3 show the operating principle of the device shown in Fig. 1. FIG. 4 is a perspective view showing a floating head device according to an embodiment of the invention, and FIGS. 5 and 6 are side views showing the operating principle of the device shown in FIG. 4. In the figure, 1a, 1b, 1c are head elements, 2
a, 2b, 2c are floating surfaces, 6 is a spring, 7 is a magnetic disk as a rotating disk, 8 is an adsorption plate, 9 is a groove, 10
a and 10b are suction surfaces, and 11 is a movable part. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 記録または読取用回転円板と対向するヘツド支
持用可動部材の上記回転円板側の面に、上記回転
円板の回転時の流体の流入側から流出側に向け下
り勾配に傾斜し、流体の流れにより上記回転円板
方向に吸引力を生じる吸着面を流体の流れ方向に
沿つて複数形成し、かつ、この各吸着面上に、流
体の流れにより、上記吸引力と反対方向の浮上力
を生じさせる浮動を有するヘツドを設けた浮動ヘ
ツド装置。
The rotary disc side surface of the head supporting movable member facing the recording or reading rotary disc is sloped downward from the fluid inflow side to the fluid outflow side when the rotary disc rotates. A plurality of adsorption surfaces are formed along the direction of the fluid flow, and a levitation force in the opposite direction to the suction force is generated on each adsorption surface by the flow of the fluid. A floating head device comprising a head having a floating effect.
JP5016085U 1985-04-04 1985-04-04 floating head device Granted JPS6145774U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5016085U JPS6145774U (en) 1985-04-04 1985-04-04 floating head device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5016085U JPS6145774U (en) 1985-04-04 1985-04-04 floating head device

Publications (2)

Publication Number Publication Date
JPS6145774U JPS6145774U (en) 1986-03-26
JPS6131380Y2 true JPS6131380Y2 (en) 1986-09-12

Family

ID=30568034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5016085U Granted JPS6145774U (en) 1985-04-04 1985-04-04 floating head device

Country Status (1)

Country Link
JP (1) JPS6145774U (en)

Also Published As

Publication number Publication date
JPS6145774U (en) 1986-03-26

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