JPH06302178A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To prevent the degradation in reliability and durability of the magnetic disk device over a long period of time by the problem of the device space and the problem of infeasibility in increasing the quantity of the devices to be taken in the case of freshly including a gas adsorption mechanism into an HDA which is increasingly reduced in size and increased in capacity. CONSTITUTION:Carbon particles 23 or silver particles 24 or copper particles 25 of gas adsorbent particles are fixed by an epoxy resin 22 to the surface of inside walls 7a of a base plate and inside walls 21a of cover of the HDA 1 to remove the gases in the HDA 1. These adsorbers are formed as films on the surfaces of the inside walls 7a of the base plate and the inside walls 21a of the cover of the HDA 1, by which the gases in the HDA are removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk device, and more particularly to a surface treatment of a base plate inner wall and a cover inner wall which are inner walls of a disk enclosure (hereinafter referred to as HDA) of the magnetic disk device.

[0002]

2. Description of the Related Art A conventional magnetic disk device will be described with reference to the drawings.

FIG. 8 is a block diagram of a conventional magnetic disk device, and FIG. 9 is an HDA used in the conventional magnetic disk device.
3 is a cross-sectional view of the inner wall of the base plate or the inner wall of the cover of FIG.

In FIG. 8, this magnetic disk device is
At least one magnetic disk medium 4 arranged on the spindle 2 and rotated by a spindle motor 3, a magnetic head 5 for writing / reading data in the vicinity of the surface of the magnetic disk medium, and a magnetic head for a predetermined cylinder. The HDA 11 includes an actuator mechanism 6 that seeks and moves to a position for positioning, and a cover 21 having a structure that encloses and seals the base plate 7 to which the spindle 2 is fixed.

Improvement of the sealing degree in the HDA 11 and HD
The base plate inner wall 7b of the base plate 7 and the cover inner wall 21b of the cover 21 for reducing dust in the A11.
Is coated with the epoxy resin 31 or the cationic electrodeposition coating 32 shown in FIG. 9, and the fittering mechanism 8 is attached.

Further, in order to remove the gas generated in the HDA 11 or the gas penetrating from the outside, a container 9 containing a gas adsorbent is mounted in the HDA 11.

[0007]

However, in recent years,
It is becoming more and more prominent that the gas generated in the HDA reduces the reliability and durability of the magnetic disk drive as the size and capacity increase, and a gas removal mechanism that can sufficiently remove the gas generated in the HDA is needed. ing. In the above-described conventional HDA gas removal mechanism, the space for accommodating the container containing the gas adsorbent cannot be taken large due to the space problem associated with the downsizing of the HDA, so the amount of gas adsorbent is reduced and the gas adsorbent is reduced. There is a problem that the area becomes small and the gas in the HDA cannot be sufficiently removed.

[0008]

The magnetic disk device of the present invention comprises a gas adsorption function part and a dust generation prevention part from the gas adsorption function part on the inner wall of the base plate or cover of the HDA.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a magnetic disk device according to the present invention.

In this magnetic disk device, at least one magnetic disk medium 4 rotated by a spindle motor 3 arranged on a spindle 2 and data are written / read in the vicinity of the surface of the magnetic disk medium 4. An HD including a magnetic head 5, an actuator mechanism 6 that seeks and moves the magnetic head 5 to a predetermined cylinder position to position it, and a cover 21 that encloses and seals a base plate 7 to which the spindle 2 is fixed.
It has A1.

Next, an HDA used in the magnetic disk device of the present invention will be described with reference to the drawings.

FIG. 2 is a sectional view showing a first embodiment of the HDA inner wall used in the magnetic disk drive according to the present invention.

The base plate inner wall 7a of the base plate 7 of the HDA 1 of FIG. 1 or the cover inner wall 21 of the cover 21.
The carbon particles 23, the silver particles 24, or the copper particles 25 of the gas adsorbent are embedded alone or in combination in the epoxy resin 22 applied to a, and the gas in the HDA 1 is adsorbed and removed.

FIG. 3 is a sectional view showing a second embodiment of the HDA inner wall used in the magnetic disk drive according to the present invention.

The inner wall 7a of the base plate of the HDA 1 of FIG.
Alternatively, carbon 26, silver 27, or copper 28 as a gas adsorbent is independently formed on the inner wall 21a of the cover to adsorb and remove the gas in the HDA 1.

FIG. 4 is a sectional view showing a third embodiment of the HDA inner wall used in the magnetic disk device according to the present invention.

The inner wall 7a of the base plate of the HDA 1 of FIG.
Alternatively, carbon 26, silver 27, or copper 28 as a gas adsorbent is alternately formed on the inner wall 21a of the cover to adsorb and remove the gas in the HDA 1.

FIG. 5 is a sectional view showing a fourth embodiment of the HDA inner wall used in the magnetic disk drive according to the present invention.

The inner wall 7a of the base plate of the HDA 1 of FIG.
Alternatively, a thin film of carbon adsorbent carbon 26 or silver 27 or copper 28 is formed on the inner wall 21a of the cover, and the gas permeability of the thin film is used to adsorb and remove the gas in the HDA 1.

FIG. 6 is a sectional view showing a fifth embodiment of the HDA inner wall used in the magnetic disk drive according to the present invention.
On the surface of the inner wall 7a of the base plate or the inner wall 21a of the cover of the first embodiment, the gas adsorption portion, that is, the carbon particles 2
3 or the silver particles 24 or the copper particles 25, a dust prevention filter 29 for preventing dust generation is attached, and HDA1
The gas inside is removed and dust is prevented from being generated from the gas adsorption part.

FIG. 7 is a sectional view showing a sixth embodiment of the HDA inner wall used in the magnetic disk device according to the present invention.
On the surface of the inner wall 7a of the base plate or the inner wall 21a of the cover of the third embodiment, a gas adsorption portion, that is, a dust prevention filter 29 for preventing dust generation from carbon 26 or silver 27 or copper 28 is attached to remove the gas in the HDA 1. At the same time as removing, dust is prevented from being generated from the gas adsorption part. As shown in FIGS. 1 to 7, the gas adsorption portion and the dust prevention portion of the first to sixth embodiments configured as described above are
Base plate inner wall 7a or cover inner wall 21a of A1
Since a large gas adsorption area can be obtained by adding a gas adsorption function to the, the efficiency of the function is high, and the H
The gas in DA1 can be removed.

[0023]

As described above, the magnetic disk device of the present invention is the magnetic disk device of the present invention, which has the gas adsorption portion and the dust prevention portion on the inner wall of the base plate or the cover of the HDA. Even if the size of the gas adsorbent is increased, the space for mounting the container containing the gas adsorbent is not taken into consideration, and a large gas adsorption area can be taken.
The effect that the gas in DA can be removed sufficiently is produced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of a magnetic disk device according to the present invention.

FIG. 2 is an HD used in a magnetic disk device according to the present invention.
It is sectional drawing which shows the 1st Example of the base plate of A or a cover inner wall.

FIG. 3 is an HD used in a magnetic disk device according to the present invention.
It is sectional drawing which shows the 2nd Example of the base plate of A or a cover inner wall.

FIG. 4 is an HD used in the magnetic disk device according to the present invention.
It is sectional drawing which shows the 3rd Example of the base plate of A or a cover inner wall.

FIG. 5: HD used in a magnetic disk device according to the present invention
It is sectional drawing which shows the 4th Example of the base plate of A or a cover inner wall.

FIG. 6 is an HD used in the magnetic disk device according to the present invention.
It is sectional drawing which shows the 5th Example of the base plate of A or a cover inner wall.

FIG. 7: HD used in a magnetic disk device according to the present invention
It is sectional drawing which shows the 6th Example of the base plate of A or a cover inner wall.

FIG. 8 is a configuration diagram of a conventional magnetic disk device.

FIG. 9 is a sectional view of an inner wall of a base plate or a cover of an HDA used in a conventional magnetic disk device.

[Explanation of symbols]

 1,11 HDA 2 Spindle 3 Spindle motor 4 Magnetic disk medium 5 Magnetic head 6 Actuator mechanism 7 Base plate 7a, 7b Base plate inner wall 8 Filtering mechanism 9 Container containing gas adsorbent 21 Cover 21a, 21b Cover inner wall 22 Epoxy resin 23 Carbon Particles 24 Silver particles 25 Copper particles 26 Carbon thin film 27 Silver thin film 28 Copper thin film 29 Dust prevention filter 31 Epoxy resin 32 Cationic electrodeposition coating

Claims (2)

[Claims] 1. At least one magnetic disk medium arranged on a spindle and rotated by a spindle motor, a magnetic head for writing / reading data in the vicinity of a surface of the magnetic disk medium, and the magnetic head. In a magnetic disk device having a sealed disk enclosure that includes an actuator mechanism that seeks and moves to a predetermined cylinder position for positioning, and a base plate that fixes the spindle, an inner wall of the disk enclosure has a gas adsorption function. A magnetic disk device comprising: 2. At least one magnetic disk medium arranged on a spindle and rotated by a spindle motor, a magnetic head for writing / reading data in proximity to the surface of the magnetic disk medium, and the magnetic head. In a magnetic disk device having a sealed disk enclosure including an actuator mechanism that seeks and moves to a predetermined cylinder position for positioning, and a base plate that fixes the spindle, an inner wall of the disk enclosure has a gas adsorption function. A magnetic disk device comprising: an inner wall having a gas and a layer for preventing dust generation from the inner wall having the gas adsorption function.