JPH02227895A - Disk device - Google Patents

Abstract

PURPOSE:To prevent the adhesion of dust onto a disk medium by fitting a fan to the spindle hub internal part of a rotary shaft and driving it with the rotation of the rotary shaft. CONSTITUTION:To a rotary shaft 1, a fan 3 is press-in-fitted between a spindle hub 2 and an L base 14, the circulation of an air flow is generated by the rotation of the spindle hub 2, and simultaneously, the air inside the spindle hub 2 is made to compulsorily flow out between magnetic disk plates 8a-8f by the rotation of the fan 3 accompanied by the rotation of the rotary shaft 1. Consequently, the circulating speed of the circulation of the air flows by the rotation of the spindle hub 2 is speeded up, and simultaneously, the dust on the most outer circumferential parts of the magnetic disk plates 8a-8f is blown off. Thus, the adhesion of the dust onto the magnetic disk plates 8a-8f can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive, and more particularly to a disk rotating machine for a magnetic disk drive.

Conventionally, in a magnetic disk device, a rotating bearing that supports a rotating shaft, a frame that supports the rotating bearing,
It consists of a spindle hub fixed to a rotating shaft, and magnetic disk plates and spacer rings are alternately stacked on this spindle hub. Therefore, a predetermined distance is maintained between the magnetic disk plates by the spacer ring.

The rotating bearing that supports the rotating bearing has a gap between the support part and the spindle hub that allows air to flow freely in and out, and the spindle hub and spacer ring also have a gap that does not block air flowing in and out of each other. Ventilation holes are provided depending on the location.

Therefore, when the spindle hub is rotated by driving the rotating shaft, air within the spindle hub flows out between the magnetic disk plates through the spindle hub and the ventilation holes of the spacer ring due to centrifugal force.

At this time, since a filter is provided on the inner circumference of the spindle hub, the air flowing out from the ventilation hole is filtered and flows out between the magnetic disk plates as clean air.
This air flow blows away the dust on the magnetic disk plate.

As the air flows out between the magnetic disk plates, a negative pressure is created inside the spindle hub, so the air containing dust removed from the top of the magnetic disk plates is transferred to the rotating bearing again in the gap between the support part and the spindle hub. It flows into the spindle hub through. The air flowing into the spindle hub is filtered by a filter and flows out between the magnetic disk plates as clean air, thereby forming a circulation of air flow.

In such conventional disk devices, airflow is circulated by centrifugal force due to rotation of the spindle hub and negative pressure inside the spindle hub due to air outflow, so air volume and pressure are limited. This has the drawback that the air flowing out from the spindle hub does not reach the outermost periphery of the magnetic disk plate, and the dust on the outermost periphery of the magnetic disk plate remains attached without being blown away.

Furthermore, due to the restriction on the circulation speed of the air flow, there is a drawback that it takes some time for the dust present in the disk device to be filtered out by the filter.

The present invention has been made to eliminate the above-mentioned drawbacks of the conventional devices, and is capable of preventing dust from adhering to the disk medium, and quickly removing dust present in the device. The purpose is to provide a disk device that can.

A disk device according to the present invention is a disk device in which a plurality of disk media are loaded via a spacer ring on the outer periphery of a spindle hub rotated by a rotating shaft, wherein the rotating shaft and the spindle hub are connected to each other. The present invention is characterized in that an air blower driven by the rotation of the rotating shaft is provided in the internal space formed by the rotating shaft.

Next, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view of an embodiment of the present invention. In FIG. It is press-fitted into the bearing 11. Here, the rotating bearing frame 12 is fixed to the U base 13.

Further, the other side of the rotating shaft 1 passes through the L base 14, the thrust spring 7, and the thrust spring seat 6, and then passes through the L base 14, the thrust spring 7, and the thrust spring seat 6.
The rotor 1 is press-fitted into the lower rotation bearing 5 fitted to the rotor 1.
It is fixed at 5.

Furthermore, the rotating shaft 1 includes a spindle hub 2 and an L base 14.
A fan 3 is press-fitted between the two.

On the outer periphery of the spindle hub 2 are magnetic disk plates 8a to 8f.
and spacer rings 9a to 9f are stacked alternately, and the uppermost spacer ring 9f is held down by a disk clamp 10. In addition, magnetic disk plates 8a to 8f
A predetermined distance is maintained between them by spacer rings 9a to 9f.

Therefore, the rotational torque generated by the rotor 15 is transmitted to the rotating shaft l, thereby rotating the spindle hub 2 and rotating the magnetic disk plates 8a to 8f.

At this time, due to the rotation of the spindle hub 2, airflow circulation occurs in the direction of the arrow shown in FIG. Force the magnetic disk plate 8a~
It is leaked during 8f.

Therefore, the circulation speed of the airflow due to the rotation of the spindle hub 2 is increased by the rotation of the fan 3, and the dust on the outermost periphery of the magnetic disk plates 8a to 8f is blown away. Dust can be prevented from adhering to the top.

In this way, by attaching the fan 3 to the inner part of the spindle hub 2 of the rotating shaft 1, the magnetic disk plates 8a to
It is possible to increase the wind pressure of the air flow flowing out during 8f and to increase the air volume. Therefore, the airflow purified by the filter 4 can flow over the entire magnetic disk plates 8a to 8f, and it is possible to prevent dust from adhering to the magnetic disk plates 8a to 8f.

In addition, since the airflow within the device is activated, the circulation speed of the airflow to the filter 4 is increased, and it is possible to quickly compensate for dust within the device and improve filter efficiency.

Furthermore, by early removal of dust present in the device, the risk of head crash can be reduced and the reliability of the device can be improved.

In one embodiment of the present invention, the fan 3 is attached to the rotating shaft 1, but if the wind pressure of the air flow flowing between the magnetic disk plates 8a to 8f can be strengthened and the air volume can be increased, the fan 3 can be attached to the rotary shaft 1. It doesn't have to be.

Furthermore, although the embodiment of the present invention has been described with respect to a magnetic disk device, it is obvious that the present invention can be applied to disk devices other than magnetic disk devices, and the present invention is not limited thereto.

As explained above, according to the present invention, the internal space formed by the rotating shaft and the spindle hub is provided with an air blowing means driven by the rotation of the rotating shaft, thereby blowing the disk medium. This has the effect that dust can be prevented from adhering to the device, and dust present in the device can be quickly removed.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention. Explanation of symbols of main parts 1...Rotation axis 2...Spindle hub 3...Fan

Claims (1)

[Claims] (1) A disk device in which a plurality of disk media are loaded via a spacer ring on the outer periphery of a spindle hub rotated by a rotating shaft, wherein the A disk device characterized by being provided with an air blower driven by rotation of a rotating shaft.