JPH04247386A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To prevent the function of a drying agent from lowering due to the attachment of gas. CONSTITUTION:This device is mounted on a spindle 1, and is equipped with a magnetic disk 2 rotated at high speed, a magnetic head 3 held with an arm 4, and a carriage 5 which performs the positioning of the magnetic head 3 by moving the arm 4, and they are housed in a sealed base plate 6. Furthermore, a gas adsorbent case 120 which includes a gas adsorbent 11 and provided with an air hole 13 communicated with the inside of the base plate 6, and a drying agent case 80 which includes the drying agent are provided at the base plate 6, and the drying agent case 80 is provided with an air hole 14 communicated with the gas adsorbent case 120. Therefore, the air inputted to the drying agent case 80 surely passes the inside of the gas adsorbent case 120 in the device, and the gas is adsorbed by the case, then, it is inputted to the case 80. Therefore, the gas can be prevented from being attached on the drying agent 7, which prevents the function of the drying agent from lowering due to the attachment of the gas.

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 desiccant for dehumidifying the inside of a device storage container;
The present invention relates to a magnetic disk device including a gas adsorbent that adsorbs gas in a device storage container.

0002

2. Description of the Related Art An example of a conventional magnetic disk device of this type is shown in FIG. This magnetic disk device has spindle 1
A magnetic disk 2 is attached to the magnetic disk and rotates at high speed, a magnetic head 3 is held by an arm 4 and writes or reads information by contacting the magnetic disk 2, and the arm 4 is moved to position the magnetic head 3. These components are housed in a sealed base plate 6.

The base plate 6 further includes a desiccant case 8 containing a desiccant 7 for dehumidifying the inside of the base plate 6 and having a ventilation hole 9 communicating with the inside of the base plate 6, and a desiccant case 8 for adsorbing gas inside the base plate 6. A gas adsorbent case 12 containing a gas adsorbent 11 and having a ventilation hole 13 communicating with the inside of the base plate 6 is provided. Reference numeral 10 denotes a filter provided inside the vent hole 9 of the case 8 and inside the vent hole 13 of the case 12, respectively. The inside of the base plate 6 is dehumidified by the desiccant 7, and the magnetic head 3 and the magnetic disk 2 are prevented from adhering to each other and causing problems in recording and reproduction. Also,
Gas generated from internal members of the base plate 6 is adsorbed by the gas adsorbent 11, and the gas is transferred to the magnetic disk 2.
This prevents the particles from adhering to the surface and causing problems with recording and playback.

0004

[Problems to be Solved by the Invention] However, in such a conventional magnetic disk device, the gas generated inside the base plate 6 enters the inside of the case 8 through the ventilation hole 9, so that the gas is not absorbed into the desiccant 7. There was a problem in that the particles adhered to each other and their functionality deteriorated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic disk device that solves these problems and prevents deterioration of the desiccant function due to adhesion of gas.

[0006]

[Means for Solving the Problems] The present invention provides a base plate that houses a magnetic disk, a magnetic head, and a positioning mechanism for the magnetic head, and a gas adsorbent that contains a gas adsorbent and has a ventilation hole that communicates with the inside of the base plate. The magnetic disk device includes an adsorbent case and a desiccant case containing a desiccant, characterized in that the desiccant case has a ventilation hole communicating with the gas adsorbent case.

[0007]

[Example] Next, an example of the present invention will be described. Figure 1
An example of a magnetic disk device according to the present invention is shown in FIG. This magnetic disk device includes a magnetic disk 2 that is attached to a spindle 1 and rotates at high speed, a magnetic head 3 that is held by an arm 4 and that writes or reads information by contacting the magnetic disk 2, and an arm 4 that moves. These components are housed in a sealed base plate 6.

The base plate 6 further includes a gas adsorbent 11 for adsorbing gas inside the base plate 6.
A gas adsorbent case 120 containing a gas adsorbent and having a ventilation hole 13 communicating with the inside of the base plate 6 is provided, and a desiccant case 80 containing a desiccant 7 for dehumidifying the inside of the base plate 6 is provided. This desiccant case 80 has a ventilation hole 1 that communicates with the gas adsorbent case 120.
4 are provided. Note that 10 is a filter provided inside each of the ventilation holes 13 and 14 (inside the case 120).

In this magnetic disk device, the case 80 containing the desiccant 7 does not have a ventilation hole directly communicating with the base plate 6, but instead has a ventilation hole 14 leading to the case 120 containing the gas adsorbent 11. There is. Therefore, the air that enters the desiccant case 80 always enters the gas adsorbent case 12.
0, and after the gas is adsorbed there, Case 8
Enters 0. Therefore, gas does not adhere to the desiccant 7, and deterioration in the function of the desiccant due to gas adhesion is prevented.

0010

Effects of the Invention As explained above, in the magnetic disk drive of the present invention, the position of the ventilation hole in the desiccant case is devised so that the air entering the desiccant case always passes through the inside of the gas adsorbent case, where the gas is absorbed. After being adsorbed, it enters the desiccant case. Therefore, gas does not adhere to the desiccant, and deterioration in the function of the desiccant due to gas adhesion is prevented.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a magnetic disk device according to the present invention.

FIG. 2 is a sectional view showing an example of a conventional magnetic disk device.

[Explanation of symbols]

1 Spindle 2 Magnetic disk 3 Magnetic head 4 Arm 5 Carriage 6 Base plate 7. Desiccant 10 Filter 11 Gas adsorbent 13,14 Ventilation hole 80 Desiccant case 120 Gas adsorbent case

Claims (1)

[Claims] 1. A base plate containing a magnetic disk, a magnetic head, and a positioning mechanism for the magnetic head; a gas adsorbent case containing a gas adsorbent and having a vent communicating with the inside of the base plate; and a desiccant case. What is claimed is: 1. A magnetic disk device comprising a desiccant case enclosed therein, wherein the desiccant case has a ventilation hole communicating with the gas adsorbent case.