JPS5948875A - magnetic disk storage device - Google Patents

Abstract

PURPOSE:To prevent a temperature rise at a magnetic disk driving part, etc. with a miniature constitution, by circulating air between two layers enclosing the magnetic disk driving part, etc. and providing a heat exchanger to an air pipe. CONSTITUTION:Both storing and driving parts of a magnetic disk are enclosed by the 1st enclosure 11, and a head positioning mechanism part is enclosed by the 2nd enclosure 14 which encloses the enclosure 11. The air flows to a hole 12 from the enclosure 11 in response to revolutions of a spindle, and the air circulates between enclosures 11 and 14 via a pipe 19. The pipe 19 contains a heat exchanger 20 which is cooled by a cooling fin 22. Thus a temperature is satisfactorily suppressed at the magnetic disk driving part, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic disk storage device, and more particularly to a cooling structure suitable for suppressing temperature rise in a magnetic disk storage section and reducing off-track Lt.

In conventional magnetic disk devices, a large number of magnetic disks are mounted on one spindle in order to increase the storage capacity, downsize the device, and shorten the time for recording and reproducing information on the magnetic disk surface (access time). A method is used in which magnetic heads are stacked at a certain interval and mounted on a plurality of transport carts installed at a certain angle in the circumferential direction of the magnetic disks and at positions corresponding to each magnetic disk, using an actuator to drive the magnetic heads. There is.

This method is very advantageous in terms of cost compared to the conventional configuration of one actuator for one spindle.

However, since the number of magnetic heads mounted on one spindle is much larger than in the past, when the device is in operation, one magnetic disk storage section becomes extremely hot due to wind damage caused by the rotation of the spindle, causing various problems. have a negative effect on mechanical parts,
Furthermore, thermal expansion increases the positioning error of the nitrogen head, that is, the off-track amount, resulting in malfunction.

In order to prevent the above-mentioned drawbacks, it is conceivable to always take in outside air from outside the device, but with this method, due to the balance of aerodynamic forces, the magnetic head is able to reach a minute gap of several μm above the magnetic disk surface. As a result, dust enters the gap, requiring a strong string-proofing filter against minute dust, which is expensive.

In addition, in the method of circulating air in a sealed state, blowing outside air into the enclosure to reduce the temperature rise inside the enclosure, but this requires a large blower and therefore a large space. Moreover, noise countermeasures are also required, making them expensive.

Purpose of the Invention An object of the present invention is to suppress the temperature rise of the magnetic disk storage section using a compact mechanism in order to improve the above-mentioned conventional drawbacks, thereby reducing the life span of mechanical parts and off-tracking due to the influence of the temperature rise. It is an object of the present invention to provide a magnetic disk storage unit that prevents an increase in storage capacity.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention focuses on the fact that air flows out from the center of the magnetic disk in the radial direction of the outer circumference due to the rotation of the spindle. , a second enclosure surrounding the first enclosure and the magnetic head positioning mechanism, and an air circulation path for guiding air from the second enclosure out of the second enclosure and returning it back into the first enclosure. , characterized in that a heat exchanger and a filter are provided in the circulation flow path.

EMBODIMENT OF THE INVENTION Hereinafter, details of the present invention will be clarified by describing an embodiment of the present invention with reference to the drawings.

FIG. 1 is a schematic plan view of one embodiment of the present invention, and FIG. 2 is a vertical sectional view of FIG. 1.

A base 3 is mounted on the frame 1 via a shock mount 2. The shock mount is provided to protect the magnetic disk mechanism from physical vibrations.

A spindle 5 incorporating a plurality of magnetic disks 4 is disposed on the base 3, and each magnetic disk rotates in conjunction with the rotation of the spindle 5.

Seven groups of magnetic heads attached to a carriage 0 provided corresponding to each magnetic disk are arranged in two halves at symmetrical positions with the spindle 5 as the midpoint (one is omitted in Fig. 2). be).

The carriage 6 is attached to the movable element 0 and has a structure in which it can be rotated by a shaft 8.

A stator 10 and a movable element 9 arranged on the base 3 form a tally type actuator for positioning the magnetic head 7 at a specific position on the surface of the magnetic disk.

Surroundings & 1 force/mer 11 close to the outer periphery of the magnetic disk 4
The cover 11 has a hole through which the magnetic head 7 moves in order to access the magnetic disk 4, and a hole through which air can flow through holes 12 and 12' and the upper center of the spindle 5. 13 is open.

A cover 14 is provided on the outside of the cover 11 and surrounds the cover 11 and includes a rotary actuator.
Holes 1, 5, 15' and 16 are drilled for passing the holes 9 through.

Between the upper part of the cover 11 and the cover 14, there are a hole 1z and a hole 1.
There is a room separated from the second enclosure through 6, in which a filter 17 is arranged, and a gasket 18 prevents air leakage. This filter 17 is provided for dust prevention.

A heat exchanger 20 is provided on the arm passage 19 that connects the holes 1.5, 15' and the drilled holes 16, and a fan 22 attached to the frame 1 via a bracket 21 blows outside air. It has a structure that allows

Now, when the spindle 5 is rotated to access the magnetic disk 4, air flows from the center of the spindle 5, where the air pressure is high, toward the outer periphery of the magnetic disk where the air pressure is low, and an opening is created immediately near the place where the air flows out. It passes through the hole 12.12' in the cover plate 1 and into the conduit 19 via the hole 15.15'.

A heat exchanger 20 is provided in the conduit 19, and outside air is blown onto the heat exchanger 20 by a fan 22, but instead of blowing air over the entire cover 14, the heat exchanger 20 is Since a small amount of air guided into the interior of the cooling device 19 is to be cooled, it can be efficiently cooled using a small heat exchanger and a cooling fan.

In this way, the hot air sent from inside the cover 11 into the pipe line 19 is cooled in the pipe line 19, passes through the hole 16, is purified by the filter 17, passes through the hole 13, and enters the cover 11 again. It is returned in a cooled and purified form.

Since the above operations are performed cyclically, the magnetic disk 4
Cooled, clean air is always supplied over the surface.

Here, since the 7 groups of magnetic heads correspond to the 4 groups of magnetic disks having different vertical heights, the vertical height positions of the holes 12.1'2', which are the passages of the magnetic head groups, are different, and the air circulation efficiency deteriorates. Therefore,.

The air blown out from the holes 12 and 12': (5% efficiency) A pipe 23 is installed to ensure good circulation.

The pipe line 23 has a pipe 7 that increases the efficiency of intake of the roaring furnace air.
Second, as shown in Figure 3, 7iξo147 < , kema p < 4 meat hole 24°, and number j, Kasu 4 As shown in Figure 4, a 4° notch 25 is provided.

Moreover, between the spindle 5 and the lowest magnetic disk 4,
A ring plate 26 is attached to reduce windage loss due to air turbulence.

Effects of the Invention As described above, according to the present invention, the enclosure 6 (1) that surrounds the disk drive section and the magnetic disk storage section, and the second enclosure that surrounds the magnetic head positioning mechanism section and the first enclosure. An enclosure is provided, air is circulated between the first and second enclosures, and the second
By providing a heat exchanger in the conduit that guides air from the first enclosure to the first enclosure, it is possible to suppress the temperature rise in the magnetic disk storage section with a compact mechanism, and also to shorten the life of mechanical parts and prevent off-tracks. Since it is possible to prevent an increase in the amount of water, quality and performance can be improved.

[Brief explanation of the drawing]

FIG. 1 is a Y-plane view of one embodiment of the present invention, and FIG.
Figure 3 is a longitudinal sectional view of a part of the air exchange 1M pipe shown in Figures 1 and 2; FIG. 2 is a perspective view of a portion of the road; 4; Magnetic disk, 7: Magnetic\rad 11: Enclosure, 1
2.12': Hole in enclosure 11, ■ and ;, L5', 16
: Enclosure] -4 hole, 14: Enclosure, 17: Fuinonta,
18: Patsukin, 1: Pipeline, 2 (l heat exchanger, 22
: Cooling fan, 23: Pipe line. -46￥ Figure 1 Figure 2 Figure 3 Cow diagram

Claims (1)

[Claims] α) A magnetic disk rotation mechanism equipped with a plurality of magnetic disks, a plurality of magnetic heads for recording and reproducing information on the surface of the magnetic disks, and a magnetic field for driving and positioning the plurality of magnetic heads. In a magnetic disk storage device having a head positioning mechanism, a first enclosure surrounding the magnetic disk rotating machine f1G and a second enclosure surrounding the first enclosure are provided, and the l1li air of the shoe 2 is transferred to the second enclosure. A magnetic disk storage device characterized by being provided with a circulation flow path for guiding air out of the enclosure and returning it into the first enclosure. Q) The magnetism according to claim 1, characterized in that a first enclosure and a room opened by the circulation channel and isolated from a second enclosure are provided in the circulation channel. Disk storage. (3) The magnetic disk storage device according to claim 1, wherein a heat exchange mechanism is provided in the circulation flow path connecting the second enclosure and the room. (The magnetic disk storage device according to claim 2, characterized in that an air purifying mechanism is provided in the room.)