JPH0256790A - Temperature control spoiler - Google Patents

Abstract

PURPOSE:To prevent the generation of a thermo-offtrack by providing a spoiler between the upper-most part disk and an upper part fixed disk and between the lower-most part disk and a lower part fixed disk, heating it and reducing the temperature difference between the upper-most part and lower-most part disk and the servo surface. CONSTITUTION:Besides a spoiler 7 arranged between respective magnetic disks 1, further, a spoiler 13 is provided between the an upper-most part disk 1 and an upper part fixed disk 12 and between a lower-most part disk 1 and a lower part fixed disk 11 and a spoiler 7a is constituted. Since the spoiler 13 becomes the resistance of the flow of air due to the rotation of the disk 1 and generates heat, the temperature difference in a servo surface 9 becomes smaller and the generation of the thermal offtrack is prevented.

Description

[Detailed description of the invention] [Summary]
The present invention relates to a temperature control spoiler for reducing thermal off-track of a magnetic disk device and rack.

In recent years, as the capacity of magnetic disk drives has increased, the track density has increased, and thermal off-track has become an increasingly important problem.

There are many causes of thermal off-trunk, but the temperature difference between the media is one of the important factors, so it was necessary to equalize the temperature between the media.

[Conventional technology]

FIG. 4 is a diagram illustrating the outline of a conventional magnetic disk device. In the figure, a plurality of magnetic disk media (hereinafter referred to as disks) (2) are held by a spindle 2 on a base (not shown) and rotated by a motor (not shown). Further, an arm 4 having a magnetic head 3 for reading/writing information on the disk 1 is fixed to an actuator 5, and the arm 4 is fixed to an actuator 5.
are placed facing each other. Note that 6 is a cover, which is combined with a base (not shown) to form a sealed structure. A spoiler 7 rectifies the air between the discs 1, improves the flying stability of the magnetic head 3, and improves the dust purging ability.

Figure 5 is a diagram explaining a conventional spoiler, which has a sealed structure (
D E) Shows an internal cross-sectional view.

In the figure, the spoiler 7 is comb-shaped, and the comb-shaped spoiler 7 is arranged between the discs 1, and guides the inner peripheral air between the discs 1 to the outer periphery, increasing the air pressure at the top and bottom of the device. The water is circulated through the filter 8 located at the top of the screen to remove dust. 9 is a servo surface used for positioning the head, and 10 is a base.

[Problem to be solved by the invention]

In a conventional magnetic disk device, a driven disk 1
The arm 4 and spoiler 7, which act as resistance to the air flow emitted from the disk, act as a heat generation source, causing an increase in the temperature of the disk. Furthermore, the magnetic disk device is forcibly cooled by air from outside the casing, and the upper side of the uppermost disk and the lower side of the lowermost disk are also cooled. This caused a temperature difference between the upper and lower discs 1 and the intermediate disc 1, and the off-track in the uppermost disc 1 and the lowermost disc 1 became large, posing a problem.

Therefore, the present invention is designed to prevent off-track from becoming large between the uppermost disc and the lowermost disc, that is, to prevent a temperature difference between the discs, the upper part of the uppermost disc, and the lower part of the lowermost disc. The purpose of this invention is to provide a temperature-controlled spoiler.

[Means to solve the problem]

As shown in FIG. 1, the problem lies in the magnetic disk drive system, which consists of a plurality of magnetic disk disks 1 that are rotated within a sealed housing, and an actuator that drives a magnetic head that is placed facing the magnetic disk disks 1. A spoiler 7a disposed between the magnetic disk disks 1 of the disk device, between the fixed disk 12 attached to the top disk 1 whose upper surface is not used and the top disk 1. Moreover, the problem is solved by the temperature control spoiler of the present invention, in which spoilers 13 are respectively provided between the fixed disk 11 attached under the bottom disk 1 whose lower surface is not used and the bottom disk 1. Ru.

[Effect]

That is, in the present invention, spoilers 13 are provided between the uppermost disc 1 and the upper fixed disc 12, and between the lowermost disc 1 and the lower fixed disc 11, and the spoilers 13 control the air flow. This creates resistance and increases the temperature, eliminating the temperature difference between the uppermost disk 1 and the lowermost disk 1 and the servo surface 9, making it possible to prevent thermal off-track from occurring.

(Example) Fig. 1 is an explanatory diagram of an embodiment of the present invention, and Fig. 2 (a) and (b) are spoiler shape diagrams of the present invention. shows.

FIG. 1 shows an internal cross section of a sealed casing of a magnetic disk device. A plurality of discs 1 are held by a spindle 2 on a base 10 and rotated by a motor (not shown). Further, (see FIG. 4), a magnetic head 3 for reading/writing information on the disk 1 is held by an arm 4 fixed to an actuator 5, and is disposed opposite to the disk 1. It has a sealed structure with a cover and base.

Furthermore, in the present invention, a spoiler is formed as shown in FIG. 2 to rectify the air between the disks 1 and improve the flying stability of the magnetic head. That is, the spoiler-7a of the present invention
In addition to the spoiler 7 placed between the conventional discs 1, the spoiler 7 is further installed between the top disc 1 and the upper fixed disc 12, and the bottom disc l.
This structure has a spoiler 13 added between the lower fixed disc 11 and the lower fixed disc 11. This spoiler 13 acts as a resistance to the flow of air due to the rotation of the disc 1 and generates heat, so that the temperature difference between the spoiler 13 and the servo surface 9 can be reduced, and the occurrence of thermal off-track can be prevented. 14 is a mounting 7L for mounting to the base. The spoiler 7a guides the internal air between the discs 1 to the outer periphery by the rotation of the disc 1, and circulates it to the inlet of the filter 8 placed above and below the device where the air pressure increases, removing dust and cleaning it. It's a nice atmosphere.

In the embodiment, the structure of the spoiler 7a is changed to the top disk I.
(lowest disk l) and upper fixed disk 12 (lower fixed disk 1)
In contrast to 1), the thickness t of the spoiler 13 was set such that the gap was approximately 111 mm. As a result, in a conventional magnetic disk drive in which the disk 1 rotates at 360 ORPM,
The temperature difference between the disks 1 was 2°C as shown in Figure 3 (A), but in this example, the temperature difference is smaller and the temperature difference is as shown in Figure 3 (A).
As shown in b), the off-track amount was able to be within the specified value.

(Effects of the Invention) As explained above, according to the present invention, spoilers are provided between the uppermost disc and the uppermost fixed disc and between the lowermost disc and the lowermost fixed disc to generate heat. upper disc,
The temperature difference between the temperature of the lowermost disc and the temperature of the servo surface 9 is small (so that it is possible to prevent the occurrence of thermal off-track).

[Brief explanation of the drawing]

Figure 1 is a diagram illustrating an embodiment of the present invention, Figure 2 (a)
(B) is a diagram of the spoiler shape of the present invention. Figures 3 (A) and (B) are diagrams explaining the temperature difference of the disc of the present invention. Figure 4 is a diagram explaining the outline of the magnetic disk device. FIG. 5 is a diagram illustrating a conventional spoiler. In the figure, 1 is a magnetic disk disk (disk), 2 is a spindle, 7 is a spoiler, 8 is a filter, 9 is a servo surface, 10 is a base, 11 is a lower fixed disk, 12 is an upper fixed disk, 13 Is a spoiler - Wood Rei g, lj inside Zooniyler form visitation 2 m Wandering ° 6 Fuyang゛C O <, j (P of B month) O's product, collection of λΣ theory B month Ou 1 most figure 1 Stone brick +'+, rz device's orihita collarbeε word of mouth first month 1 U■ diagram

Claims (1)

[Claims] Multiple magnetic disk disks (
1) and an actuator for driving a magnetic head disposed opposite to the magnetic disk disk (1). between the upper fixed disk (12) installed on the uppermost disk (1) which is not used, and the uppermost disk (1), and under the lowermost disk (1) whose lower surface is not used. A temperature control spoiler characterized in that a spoiler (13) is provided between the attached lower fixed disk (11) and the lowermost disk (1).