JPH0498671A - Information recording and reproducing disk device - Google Patents

Abstract

PURPOSE:To reduce oscillation at a rotary disk, recording and reproducing head and supporting arm by providing an air jetting port, which jets out air parallelly or horizontally to the plane of the disk, at a spoiler. CONSTITUTION:With the rotation of a rotary fan 11, air existent in a space 12 flows out in an arrow 13 direction, passes through a tube 14 and a relay 15 and flows into a spoiler 17, which is comb-shaped with an air flow-in port for the flow-in of air, and this spoiler 17 is equipped with an air conducting port shown by a dotted line and an air flow-out port 22 so that the air from the air flow-in port 16 can flow through the air conducting port and the air flow-out port 22 to an interval between magnetic disks 1. Therefore, the air can easily flow out between the magnetic disks 1 rotated at high speed only by the rotation of a rotary motor 2, and it is possible to eliminate negative pressure near the inner periphery of the magnetic disk 1 to be generated in the case of the high-speed rotation. Thus, the adverse influence of oscillation due to rotation is prevented.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an information recording/reproducing disk device, and more specifically, to a rotating active device in which a plurality of rotating recording disks are stacked with gaps, such as a magnetic disk device. In particular, it relates to preventing vibrations of a rotating recording plate and recording/reproducing heads due to rotation. [Prior art] A rotating recording disk (disk), such as a magnetic disk device.
In a device that rotates at high speed by stacking multiple discs with gaps between them, the inner circumference of the disc gradually becomes negative pressure, and when it reaches a certain level of negative pressure, it is unbalanced with the atmospheric pressure outside the disc, and as the disc rotates, it leaks to the outside. Air suddenly flows in from the outside of the magnetic disk against the airflow, and this impact causes the rotating disk to vibrate, which adversely affects recording and reproduction by the magnetic head. If the disc gap is widened, negative pressure will be less likely to occur, but this conflicts with miniaturization of the device.
Increasing the disc gap cannot be adopted. As a countermeasure against vibrations induced by air turbulence generated when the disks rotate without widening the gap between the disks, (1) As shown in the cross-sectional view in Fig. 9, a A plurality of magnetic disks l are fixed to a hub 4 through a clamp ring 5, a gap 29 is provided between the tip surface and the circumferential surface of the hub 4, and a disk clamp 6
A structure in which they are supported in a laminated state under pressure has been proposed (Patent Publication No. 63-94496).
. A hole is provided in the upper part of the hub 4 and the disk clamp 6, and an air filter 33 is provided in the hole of the disk clamp 6. This device uses a rotating motor 2 and a spindle shaft 3.
A stacked magnetic disk 1 that rotates when rotated.
The air existing in the space 12 sandwiched between the disks is disturbed, and the faster the magnetic disk 1 rotates, the more forcefully the air is pushed out in the circumferential direction by centrifugal force. Therefore, the pressure near the inner circumference of the magnetic disk 1 becomes negative pressure. When the space 12 becomes negative pressure, the air from which dust has been removed by the air filter 33 in the hole of the disk clamp 6 flows between the stacked magnetic disks 1 through the gap 29 of the hub 4 and the hole 34 of the clamp ring 5. It flows into the space 12 of . With this structure, air that is purified by itself flows in only by the rotation of the magnetic disk 1 without forcing air to be blown from the outside, and is effective in preventing harmful effects of dust on the magnetic disk 1. This is also effective in preventing the magnetic disk 1 from vibrating when air suddenly flows in from the outside due to pressure. (2) Next, as shown in FIG. 10 ((a) is a perspective view, (b) is a plan view, and (c) is a sectional view), a magnetic head is installed on the stacked magnetic disks 1. A support spring 8 and an arm 9 supporting the magnetic head 7 are fixed to a base 25 via a magnetic head support system 30, and a turbulence prevention plate 35
A structure has been proposed in which the magnetic head is attached to the magnetic head support system 30 one-to-one with the magnetic disk 1 at the same height and with the same lamination interval (Japanese Patent Application Laid-Open No. 119078-1983).
Publication No.). This structure has the effect of preventing vibrations to the magnetic head 7 due to air turbulence generated by the rotation of the magnetic disk 1. (3) Furthermore, as shown in FIG. 11 ((a) is a plan view of the magnetic disk device, (b) is a perspective view of the current plate), the magnetic head 7 installed on the stacked magnetic disks 1 is , a structure in which a rectifying plate 35 is attached at a position a predetermined distance in the direction of rotation of the magnetic disk 1 has been proposed (Japanese Patent Publication No. 1-25160). In this structure, the airflow flowing from the upstream side in the rotational direction is
This reduces the average flow velocity while maintaining the stacked state. As a result, vibrations generated in the support spring 8 are significantly reduced, which helps prevent errors from occurring when reading from or writing to the magnetic disk 1.

[Problem to be solved by the invention]

Although the above-mentioned conventionally proposed devices are effective to some extent in solving problems caused by air turbulence, they have the following problems. (1) Although it is possible to install an air outlet in the hub, the high-speed rotation of the magnetic disk causes the wall of the air outlet to block the outlet, making it impossible for air to flow out smoothly. It is undeniable that there is some negative pressure near the inner circumference, and although the vibrations due to the negative pressure have been reduced, the minute vibrations of the magnetic disk are not completely eliminated. In addition, in this structure, the large number of air outlets provided in the clamp ring causes an imbalance in the rotating mechanism, and vibrations with a frequency caused by the number of air outlets are generated. For example, when a magnetic disk is rotating at 10Hz, if eight air outlets are provided around the circumference of the hub, vibrations of 10Hz x 8 = 80Hz will occur, which will cause the magnetic head support system to experience vibrations at that frequency. . Furthermore, since the assembly method involves installing the hub onto the magnetic disk, it is difficult to align the air outlet at the same position on the circumference, and it is difficult to balance the rotation. In addition, when fixing the position of the clamp ring using pins or keys, since the magnetic disks are stacked, a pin or key is required for each clamp ring, and the large number of pins and some of the keys may cause unbalance. Therefore, even with this method, it is difficult to maintain rotational balance. When the magnetic recording density is increased. Although it is necessary to narrow the track and rack pitches of the magnetic disk, the above-mentioned vibration problem greatly affects the positioning accuracy in this case. (2) Vibration of the magnetic head due to intrusion of air can be prevented by a turbulence prevention plate and a rectifier plate, but in addition to the minute vibration of the disk mentioned in (1), the vibration of the magnetic disk itself, the hub to which the magnetic disk is attached, and the spindle can be prevented. No measures have been taken to prevent vibrations of magnetic disks caused by mechanical errors such as machining and assembly accuracy. (3) When a plurality of rotating magnetic disks are housed in a closed container, the airflow between the inner wall of the closed container and the magnetic disk surface facing the inner wall of the closed container is as schematically shown in Fig. 12. , for the same reason as mentioned above, the negative pressure causes turbulence, which causes the top, top, and
There is a problem in that the two bottom plates especially cause vibration. In Figure 12, (a) shows the air flow between the upper magnetic disk and the inner wall of the sealed container, and (b) shows the air flow in the center of the upper and lower magnetic disks. (c) shows the airflow between the lower magnetic disk and the inner wall of the sealed container. (As a document describing such problems, see IE Transactions on Magnetics, Volume 25, No. 5, September 1989, No. 3.
Pages 378-3380 “A New Air Circulation Pass for a High Recording”
Density Magnetic Head Disk Drive J, IEEE Trans, on Magnet
ics Vol, 25 No, 5September
(1989) pp, 3378-3380 “A NEW
AIR CIRCULATION PATI(FORA
I (IGH RECORDING DENSITY M
Therefore, the main object of the present invention is to solve the above problems and realize an information recording/reproducing disk device with less vibration of a rotating disk, a recording/reproducing head, and its supporting arm. It is to be.

[Means to solve the problem]

In order to achieve the above objects, the present invention provides an information recording/reproducing apparatus comprising a plurality of disks installed on a disk rotating shaft at intervals in the axial direction and driven once, and a recording/reproducing head facing the surface of the disks. The disk device is configured to include an air flow introducing means that is fixed relative to the rotation of the disks and guides the air flow to the inner periphery of at least some of the plurality of disks. The air flow introducing means was constituted by a columnar body (hereinafter referred to as a spoiler) having an air flow hole therein and extending in the radial direction of the disk. Further, the spoiler is provided with an air spout that spouts air in parallel or horizontally to the disk plane. The spoiler can be positioned on the surface of the disk, either near the recording/reproducing head or at a position equally dividing the central angle of the disk. Note that the above-mentioned recording/reproducing head includes recording, reproducing, and dual-purpose heads. Further features of the present invention will become clear from the description of the embodiments.

[Effect]

The present invention eliminates turbulent flow caused by negative pressure by letting air flow out from a spoiler that is fixedly provided with respect to the rotation of the disks to fill the insufficient air amount between stacked disks or between the disks and the inner wall of the container. This prevents the occurrence of In particular, a structure in which a plurality of spoilers are inserted into the upper and lower surfaces of each of the stacked disks at equal intervals around the circumference of the disks without contacting the disks, and air flows out, is effective in eliminating the negative pressure state. A spoiler inserted between stacked disks has an air outlet so that the air outflow direction is perpendicular to the surface of the disk, and air is blown onto the disk surface to suppress the disk from the top and bottom. A minute gap is provided between the spoiler and the disk surface, and this gap acts as a static pressure air bearing, so that the disk surface sandwiched between the upper and lower spoilers is regulated without contacting the spoiler surface. By configuring the height of the spoiler so that the gap between the disc and the spoiler becomes narrow, the stiffness of the air bearing can be changed simply by adjusting the air pressure. In other words, the pressure and
A flow regulator is installed, and the air condition is controlled by operating the pressure and flow regulator. In addition, by configuring the spoiler structure so that the cross-sectional area of the air inlet that flows in from the air supply ratio source is equal to the cross-sectional area of the air outlet that flows out near the inner circumference of the disk, the spoiler can flow from the spoiler to the disk. The pressure and flow rate of the discharged air can be easily and quantitatively adjusted by operating a pressure/flow rate regulator installed at the air supply ratio source. Since the spoiler in the present invention is fixed against rotation of the head, the adverse effects of vibration due to rotation of the air outlet as described in the prior art are prevented.

【Example】

Examples of the present invention will be described below. FIGS. 1(a) and 1(b) respectively show a sectional side view of an embodiment of an information recording/reproducing disc device according to the present invention and a perspective view of a spoiler, which is a component of the above embodiment. A plurality of magnetic disks 1 are press-supported at equal intervals by disk clamps 6 via clamp rings 5 to a hub 4 fixed to the tip of a spindle shaft 3 directly connected to a rotary motor 2. The magnetic disks 1 are stacked at intervals in the axial direction of the rotating shaft and parked at the same time. The magnetic head 7 is attached to a support spring 8 so that the magnetic head 7 can slide on the surface of the stacked magnetic disks 1 spaced apart from each other in the axial direction of the rotating shaft of the stacked magnetic disks 1 via the clamp ring 5.
It is installed on arm 9 via. The arm 9 is attached to the output shaft of the linear motor 10 so that it can move in the radial direction on the surface of the magnetic disk 1. Further, the device of this embodiment has a structure in which a rotary blade 11 whose rotation is sufficiently balanced is mounted on the disk clamp 6, and when the rotary motor 2 rotates, the rotary blade 11 also rotates at the same time. As the rotary blade 11 rotates, the air existing in the space 12 is discharged in the direction of the arrow 13, and the tube 14 and the joint 1
5, an air inlet 16 is provided, and the air flows into a spoiler 17 having a comb shape.
has an air passage hole and an air outlet 22 shown by dotted lines, and the air from the air inlet 16 is transferred to the air passage hole and the air outlet 2.
2 into the gap between the magnetic disks 1. As shown in Figure (b), the spoiler 17 touches the magnetic disks up to the inner circumference of the magnetic disks 1 at three equal positions on the circumference between the stacked magnetic disks 1, that is, at equal central angles. Inserting a columnar body that is elongated. Although the plurality of spoilers 17 may be installed at equal intervals, dividing the circumference into four equal parts or more, an example in which the spoilers are divided into three equal parts is shown here. The disk outer peripheral side ends of the plurality of columnar bodies are commonly connected, and the air passage holes are also commonly connected to the air inlet 16. FIG. 2 shows a side cross-sectional view of an embodiment in which a sirocco fan 18 is installed in place of the rotary blade 11 shown in FIG. In this embodiment, the sirocco fan 18 rotates as the magnetic disk 1 rotates, and surrounding air is guided into the container 20 and returned to the spoiler 17. With the above configuration, air can easily flow out between the magnetic disks 1 rotating at high speed only by the rotation of the 5-rotation motor 2, eliminating the negative pressure near the inner circumference of the magnetic disk 1 that occurs during high speed rotation. . FIG. 3 is a side sectional view showing the structure of another embodiment of the magnetic disk device according to the present invention, which eliminates negative pressure near the inner circumference of the magnetic disk. The structure of this embodiment is similar to that of the embodiment shown in FIG.
A stacked magnetic disk 1 is pressed and supported at equal intervals by a disk clamp 6 via a clamp ring 5 to a hub 4 fixed to the tip of a spindle shaft 3 directly connected to a rotary motor 2. In addition, a prismatic spoiler 17 provided with an air outlet 22 for air to flow out is configured in a comb shape,
The magnetic disk 1 is inserted between the magnetic disks 1 stacked at the same interval up to the vicinity of the inner circumference of the magnetic disk 1 without touching the magnetic disk. The spoiler 17 is provided with an air inlet 16 that allows air to flow in from an air supply source 20 and a pressure/flow regulator 21 outside the magnetic disk device. With the above configuration, the air from the air outlet 22 of the spoiler 17 can flow out between the magnetic disks 1 which are being rotated at high speed by the rotary motor 2, and the air that is generated near the inner circumference of the magnetic disk 1 during high speed rotation can be discharged. Eliminate negative pressure. Furthermore, with this structure, the flow rate can be easily controlled using the pressure/flow rate regulator 21, and the optimum flow rate can be selected, making it possible to control the optimum amount of air corresponding to the rotational speed of the magnetic disk 1. . FIG. 4 shows the structure of still another embodiment of the present invention for eliminating negative pressure near the inner circumference of a magnetic disk, in which (a) is a side sectional view and (a) is a side sectional view;
b) shows a partially enlarged view. A pipe 23 is formed in a ring shape near the inner periphery of each layer of a plurality of stacked magnetic disks 1, and an air inflow pipe 24 is attached to a part of the pipe 23, so that air from inside the air inflow pipe 24 is formed in a ring shape. It has a structure that allows it to flow into the pipe 23 and is fixedly supported on the base 25. Further, the ring-shaped pipe 23 is provided with a plurality of air outlet ports 22 so that air can flow out near the inner circumference of the stacked magnetic disks 1.
As shown in the cross-sectional view of (b), the shape is a thin streamlined shape, and the shape of the air inflow pipe 24 prevents the air flow between the stacked magnetic disks 1 from becoming turbulent. There is. Therefore, when the magnetic disk 1 rotates at high speed and the vicinity of the inner circumference of the magnetic disk 1 becomes negative pressure, air from inside the air inflow pipe 24 and the ring-shaped pipe 23 naturally flows between the stacked magnetic disks 1. , can eliminate negative pressure. FIG. 5 is a sectional view showing the structure of an embodiment of a magnetic disk device according to the present invention, which blows air from above and below the magnetic disk. The magnetic disk rotation mechanism that rotates the plurality of stacked magnetic disks 1, the magnetic head corresponding to the magnetic disk 1, and the magnetic head support system are the same as the structure of the embodiment described in FIG. A screw rotor 26, which is a rotor that enables compressed air blowing, is mounted on the disk clamp 6. The screw rotor 26 is covered with an airtight container 27, so that it does not come into contact with the screw rotor 26 through a minute gap like a labyrinth seal. The space 1 is rotated by the rotation of the magnetic disk 1, that is, the rotation of the screw rotor 26.
The air that was present in the container 2 flows into the closed container 27. The inflowing air does not flow back due to the labyrinth seal effect.
As the rotation of the screw rotor 26 increases, compressed air is stored in the closed container 27. The stored compressed air is transferred to the comb-shaped spoiler 1 by operating the regulator 28.
7 at an arbitrary pressure. The spoiler 17 is provided with a plurality of air outlet ports 22 so that the air outlet direction is perpendicular to the surface of the magnetic disk 1. As a result, the minute gap 29 between the spoiler 17 and the magnetic disk 1 constitutes a static pressure air bearing, and the spoiler 1
The magnetic disk 1 is regulated by the spoiler 17 without contact with the air pressure flowing into the gap 29 and the vibration of the magnetic disk 1 is suppressed. FIG. 6 shows the structure of another embodiment of the magnetic disk device according to the present invention that blows air from above and below the magnetic disk, (a) is a sectional view of the spoiler portion, and (b) is a perspective view of the spoiler. . The spoiler 17 is connected to the air outlet 2 so that the air outlet direction is perpendicular to the surface of the magnetic disk 1.
2 are provided. That is, this structure also has a minute gap 29 formed between each magnetic disk 1 and each spoiler 17.
However, it has a static air bearing structure, and even if the surface of the magnetic disk 1 is undulated, the gap 2 between the spoiler 17 and the static air bearing
9, the interval between the magnetic disks 1 can be regulated without contact, and vibration of the magnetic disk 1 can be prevented. Furthermore, in this embodiment, the air inlet 1 of the spoiler 17 is similar to that shown in FIG.
The pressure of the air to 6 can be adjusted with a pressure/flow regulator attached to an air supply source (not shown) outside the magnetic disk drive, and the force with which the air presses against the magnetic disk 1 can be adjusted. Any waviness caused by the waviness of the disk 1 itself, the machining of the hub 4 to which the magnetic disk 1 is attached, the processing of the spindle shaft, assembly accuracy, etc. can be easily suppressed with an optimal pressure. Furthermore, the spoiler 17 has an air outlet 22 through which air exits at right angles to the surface of the magnetic disk 1, as shown in the perspective view of (b).
and an air outlet 2 that exits parallel to the surface of the magnetic disk 1.
2 and both. Both air suppression and air outflow methods are possible at the same time. Further, by dividing the air supply path to each air outlet 22, the pressure and flow rate of each can be adjusted arbitrarily. FIG. 7 is a plan view showing a schematic structure of an embodiment of a magnetic disk device according to the present invention in which the magnetic disk is forcibly suppressed by air only in the vicinity of the magnetic head. In the embodiment described above, the spoiler 17 is installed at three equal positions on the circumference of the magnetic disk 1 to prevent vibration of the entire surface of the magnetic disk 1. Focusing on the fact that the vibrations of No. 1 have an adverse effect on access by the magnetic head 7, (a) forcibly suppressing only both ends of the magnetic head 7, and (b) for the magnetic head 7. Suppresses only the vicinity of the downstream side in the direction of one rotation of the magnetic disk 2
The embodiment shown in 6(a) is shown in FIG. Suppression spoiler 1
One each of 7 is installed. Thereby, when the magnetic disk 1 rotates at high speed, only the area between the two spoilers 17 can prevent the magnetic disk 1 from vibrating. Therefore, by using this area as the access area of the magnetic head 7, vibration-free recording and
Can be played. In the embodiment shown in (b), the spoiler 17 is connected to the suppression structure and the first
It fulfills the function of the conventional rectifier plate 35 explained in FIG.
It is also possible to prevent the support spring 8 from vibrating due to air turbulence. FIG. 8(a) is a sectional view showing the structure of an embodiment of a magnetic disk device according to the present invention that prevents air turbulence between the magnetic disk and the inner wall of the closed container. The magnetic disk rotation mechanism and magnetic head support mechanism described in FIG. 1 are installed in the closed container 27. Air flows out toward the rotational direction of the magnetic disk 1 into the inner wall 31 of the upper sealed container near the top surface of the magnetic disk 1 at the top and the inner wall 32 of the lower sealed container near the bottom surface of the magnetic disk 1 at the bottom. A spoiler 17 is attached which has an air outlet 22 opened in the manner shown in FIG. This spoiler 17 also includes a means for discharging air by means of a rotary blade attached to the rotating shaft of the magnetic disk 1, as shown in FIG. It is constructed so that two means of inflow can be added. From the above, the surface of the magnetic disk 1 and the inner wall of the sealed container 3
Air can easily flow in between the magnetic disk 1 and the magnetic disk 1, and vibration of the magnetic disk 1 due to negative pressure can be prevented. FIG. 8(b) is a sectional view showing the structure of another embodiment of the present invention that prevents air turbulence between the magnetic disk 1 and the inner walls 31 and 32 of the sealed container. In this structure, the air outflow direction of the air outflow port 22 shown in FIG. Therefore, the minute gaps 29 between the upper surface of the uppermost magnetic disk 1 and the spoiler 17 and between the lower surface of the lowermost magnetic disk 1 and the spoiler 17 constitute hydrostatic air bearings, and the inner wall of the closed container and the magnetic Vibrations caused by turbulent flow on one surface of the disk can be suppressed without contact. Although the most effective embodiment of the magnetic disk device of the present invention has been described above, the present invention is not limited to the above embodiment. It can also be applied to optical discs and other information recording and reproducing discs.

【Effect of the invention】

As explained above, the present invention completely eliminates the vibration of the magnetic disk, thus making it possible to minutely position the magnetic head during rotation, and enabling high-speed rotation of the disk without vibration in order to increase the transfer rate. This will make an even greater contribution to increasing magnetic recording density and shortening average access time in the future.

[Brief explanation of drawings]

Part 1 (a) and (b) are a sectional view and a schematic perspective view showing the configuration of one embodiment of a magnetic disk device according to the present invention, respectively, and Figs. 2, 3, 5, and 8 are FIGS. 4A and 4B are cross-sectional views showing the structure of an embodiment of the magnetic recording disk device according to the present invention, respectively, and FIGS. 6(a) and (b) are a sectional view and a perspective view, respectively, of a spoiler used in a magnetic disk device according to the present invention, and FIG. 7(a) and (b) are both a magnetic disk device according to the present invention. 9 is a sectional view of a conventional magnetic disk device, and FIG. 10 (a), (b), and (c) are respectively conventional magnetic disk devices. A perspective view of a magnetic disk, a plan view of a magnetic disk, and a sectional view of a magnetic disk device, and FIGS. 11(a) and 11(b) each show a structure of an example of a conventional magnetic disk device. FIG. 12 is a plan view of a magnetic disk and a perspective view of a rectifying plate; FIG. 12 is a diagram schematically showing the flow of air in each section of the magnetic disk device in a closed container; 1...Magnetic disk, 2...Rotating motor, 3...Spindle shaft, 4...Hub. 5...Clamp ring, 6...Disk clamp, 7...Magnetic head. 8... Support spring, 9... Arm, 19... Container, 20... Air discharge source, 21... Pressure/flow regulator, 22... Air outlet, 23... Ring shaped pipe, 24... air inflow pipe, 25... base, 26... screw rotor, 27... sealed container, 11... linear motor, 12... space. 13...Arrow, 14...Tube. 15...Joint. 16...Air inlet, 17...Spoiler, 18...Sirocco fan, 28...Regulator. 29... Gap. 30...Magnetic head support system. 31... Inner wall of upper sealed container, 32... Inner wall of lower sealed container, 33... Air filter, 34... Hole, 35... Turbulence prevention plate, 36... Rectifier plate.

Claims (1)

[Claims] 1. In a disk device comprising a plurality of information recording disks installed at intervals in the axial direction of a rotating shaft and rotated at the same time, and a recording/reproducing head facing the surface of the disks. , installed in the gap between the plurality of disks without contacting the disk and fixed against rotation of the disk, having an air passage hole and an air outlet to the gap between the disks, and extending in the radial direction of the disk. An information recording/reproducing disc device characterized in that it is constructed by inserting columnar spoilers. 2. The information recording/reproducing disc device according to claim 1, wherein the spoiler is comprised of a plurality of spoilers arranged at equal central angle positions on the disc. 3. The information recording/reproducing disk device according to claim 1, wherein the spoiler is comprised of a plurality of spoilers arranged only near the recording/reproducing head. 4. An information recording/reproducing disk device according to any one of claims 1 to 3, further comprising an air flow adjustment means for adjusting the pressure and flow rate of the air flowing out from the spoiler. 5. Information recording and reproducing according to claim 4, characterized in that the air flow adjusting means is constituted by means for collecting air in the closed container and returning it to the spoiler using the rotational force of the disk. disk device. 6. An information recording/reproducing disk device according to claim 5, wherein said air flow adjusting means is constituted by a valve of a flow pipe from an air supply source to said spoiler. 7. In any one of claims 1 to 6, the air outlet of the spoiler blows the air that has passed through the air passage hole perpendicularly to the surface of the disk, and the air flow pressure from the upper and lower surfaces of the disk is used to An information recording/reproducing disk device characterized in that the disk is arranged and configured to prevent vibration of the disk. 8. In a disk device comprising a plurality of information recording disks installed at intervals in the axial direction of a rotating shaft and rotated at the same time, and a recording/reproducing head facing the surface of the disk, the plurality of disks An information recording/reproducing disk device comprising: a ring-shaped pipe disposed concentrically with the disk at an inner circumferential portion of the disk in a gap, and having an air outlet; and means for supplying an air flow to the pipe. 9. The information recording/reproducing disk device according to claim 8, wherein the pipe has a streamlined cross-sectional shape. 10. A plurality of information recording disks installed at intervals in the axial direction of a rotating shaft and rotated at the same time, a recording/reproducing head facing the surface of the disk, and an airtight container housing the disk and the recording/reproducing head. In the disk device, the disk is installed between the inner wall of the sealed container and the surface of the disk facing the inner wall of the sealed container without contacting the disk and fixed against rotation of the disk, and air conduction is provided. 1. An information recording/reproducing disk device comprising a spoiler having a hole and an air outlet to a gap between the disks. 11. The information recording and reproducing disc device according to claim 10, wherein the spoiler has an air outlet that blows the air that has passed through the air passage hole perpendicularly to the surface of the disc facing the inner wall of the sealed container. 12. A magnetic disk device according to any one of claims 1 to 11, wherein the disk is a magnetic disk and the recording/reproducing head is a magnetic head.