JPH01144286A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To obtain an air cleaning function with high efficiency by providing an air spoiler between the magnetic disks provided at an upper-stream position than a magnetic head part for an air flow to rotate together with the magnetic disks and supplying the cleaned air to the lower side of this air spoiler with this air spoiler as a guide. CONSTITUTION:The air to rotate together with magnetic disks 1 is exhausted to the external part of the magnetic disks 1 by an air spoiler 2. The exhausted air of a positive pressure is introduced into an air filter 3 and passed through the air filter 3 by the differential pressure between before and after the air filter 3, and dust is eliminated. The air cleaned by this is absorbed into the negative pressure of an opening part 5 of an air guide 4 formed in the air spoiler 2 and discharged between the magnetic disks 1 at the upper-stream part of a magnetic head 6 by the air guide 4. Thus, the air in a head, a disk, and an assembly can be cleaned efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk drive, and particularly to a magnetic disk drive that efficiently cleans the air inside a head disk assembly (HDA) and improves reliability against head crashes. The present invention relates to a magnetic disk device having an air cleaning system configured as described above.

[Conventional technology]

Conventionally, there are the following three methods for configuring this type of air cleaning system.

The first method is to provide an air filter and a blower motor outside the HDA, and supply air that is purified outside into the HDA.

The second method uses the blower effect caused by the rotation of the magnetic disk, and the rotation of the magnetic disk spindle system causes the H
In this method, an air filter is installed in the rotating air flow path generated in the DA, and the rotating air is passed through the air filter to remove dust.

The third method is to insert an air spoiler between the magnetic disks to guide the airflow that accompanies the magnetic disks to the outside of the magnetic disk rotation system, and introduce the airflow guided outside into an air filter to remove dust. be.

[Problem that the invention seeks to solve]

However, the first method has disadvantages, such as the increased size of the device and the need for maintenance parts.

The second method cannot be used when it is impossible to construct a rotating air flow path, that is, when it is impossible to construct a central blowing type magnetic disk rotation system.

The third configuration method has been used for some time, but because the air filter has a large air passage resistance, it cannot be expected to provide an efficient air cleaning system configuration.

The present invention was made in view of the above circumstances, and is a magnetic head that efficiently removes dust from the air circulating between the disks and also supplies clean air between the magnetic disks upstream of the magnetic head. The objective is to provide a disk device.

[Means for Solving the Problems] For this purpose, the present invention provides a magnetic disk device having a disk rotation system consisting of a plurality of stacked disks and a magnetic head that performs recording and reproduction on the disks. an air spoiler inserted between the disks at a position where the air flow flowing through the magnetic head is lower than the magnetic head; Four people were placed at the air filter using the upstream end face of the air spoiler as a guide, and air purified by the air filter was configured to be supplied between the magnetic disks at the downstream side of the air spoiler and at the upstream position. .

〔Example〕

A magnetic disk device according to an embodiment of the present invention will be described below. In the present invention, an air spoiler is inserted between rotating disks, and a differential pressure of air generated before and after the air spoiler, that is, a positive pressure at the front position of the air spoiler,
By using both effects of negative pressure at the rear position, the differential pressure between the air before and after the air filter is increased, thereby increasing the amount of air passing through the air filter. Furthermore, air purified by an air filter is supplied between the magnetic disks upstream of the magnetic head.

FIG. 1 is a diagram showing a magnetic disk F device according to an embodiment of the present invention. The internuclear area is shown with the HAD cover removed. 1 is a plurality of stacked magnetic disks, 2 is an air spoiler inserted between these magnetic disks 1 without contact, and 3 is an air filter placed adjacent to the air spoiler 2. In addition, 4 is the air filter 3
An air guide 5 is formed between the discharge side of the magnetic disk 1 and the magnetic disk 1, 5 is an opening of the air guide 5, and 6 is a magnetic head for recording and reproducing data on and from the magnetic disk 1.

Now, the air entrained by the magnetic disk 1 is discharged to the outside of the magnetic disk 1 by the air spoiler 2. The discharged positive pressure air is directed to the air filter 3, and due to the pressure difference before and after the air filter 3, it passes through the air filter 3 and dust is removed. As a result, the purified air is attracted by the negative pressure of the opening 5 by the air guide 4 formed inside the air guide 2, and is emitted between the magnetic disks 1 at the upstream side of the magnetic head 6. Ru.

FIG. 2 is a diagram showing the air flow within the air cleaning system in more detail. Air flow is indicated by arrows between the cores, and a part of the top plate of the air cleaning system is shown in cross section to expose the inside. The air entrained by the magnetic disk 1 is introduced from an air guide 2 to a filter 3 to remove dust as shown between the cores, passes through an air guide 4, and is released between the magnetic disks 1 through an opening 5 thereof. be done.

〔Effect of the invention〕

As described above, in the present invention, an air spoiler is installed between the magnetic disks located upstream from the magnetic head section, and the air spoiler is taken in as a guide and purified air is directed to the air flow accompanying the magnetic disk. The air is supplied to the downstream side of this air spoiler.Therefore, the air flow path is such that the differential pressure between the positive pressure at the upstream position of the air spoiler and the negative pressure at the downstream position acts on the air filter with a synergistic effect. A system is formed, making it possible to improve the efficiency of the air cleaning function of the HD A. Also, since the purified air is discharged between the magnetic disks upstream of the magnetic head, the head crash resistance is improved. Excellent l-r DA can be realized.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional plan view of a magnetic disk device according to an embodiment of the present invention, and FIG. 2 is a perspective view of the main parts thereof. 1...Magnetic disk, 2...Air spoiler, 3.
...Air filter, 4...Air guide, 5...
Opening, 6...magnetic head.

Claims (1)

[Claims] (1) In a magnetic disk device having a disk rotation system consisting of a plurality of stacked disks and a magnetic head that performs recording/reproduction on and from the disks, the air flow flowing through the magnetic heads is higher than that of the magnetic heads. It is equipped with an air spoiler inserted between the disks at an upstream position, and an air filter placed outside the disk, and the air that goes around the magnetic disk is introduced into the air filter using the upstream end surface of the air spoiler as a guide. . A magnetic disk drive, characterized in that air purified by the air filter is supplied between the magnetic disks at the downstream side of the air spoiler and at the upstream position.