JPH06295560A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To remove the corrosive gases stagnating in the inner peripheral part of a magnetic disk by providing the outer periphery of a spindle with a gas adsorbent member in the entire part or a part thereof. CONSTITUTION:The gas adsorbent member 1 mounted on at least a part of the outer periphery of the spindle 4 which is freely turnably fixed to a base 5 and is fixed with the magnetic disk 3 by means of a clamper 2 adsorbs the corrosive gases near the inner peripheral part of the magnetic disk 3. The removal of the corrosive gases stagnating in the inner peripheral part of the magnetic disk 3 is thus made possible. Then, the highly reliable magnetic disk device with which the generation of a fault in recording or reproducing of information by stagnation of the corrosive gases is prevented is obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a magnetic disk mounted on a rotating spindle and a magnetic head for recording or reproducing information on or from the magnetic disk, and the magnetic head is designated by the positioner as the magnetic disk. The present invention relates to a magnetic disk device that performs positioning at a set position.

[0002]

2. Description of the Related Art In a magnetic disk device, a magnetic head driving device positions a magnetic head with respect to a specified track among a number of concentric circles set on a magnetic disk that performs steady rotation, and information is recorded. Recording or playing.

As a magnetic head drive unit, a so-called linear type magnetic head drive unit for performing positioning by linearly reciprocating the magnetic head from the outside of the magnetic disk toward the center, and a fixed shaft as a center. There are two types, a so-called rotary type magnetic head drive device which performs positioning by a rotary motion.

The magnetic disk is mounted on a spindle which makes a rotary motion, and is fixed to the spindle by a clamper. When two or more magnetic disks are mounted on the spindle, a cylindrical disk spacer is interposed between two adjacent magnetic disks, and the two magnetic disks are stacked so that the distance between them is kept at a predetermined value. .

The magnetic disk device configured as described above is
The presence of submicron-order fine suspended dust and corrosive gas may cause obstruction in recording or reproducing information.
A sealed structure is used to prevent dust from entering the atmosphere. Also, the dust generated inside the magnetic disk device is
A small amount of corrosive gas generated from the adhesive and components is collected by the filter installed inside the magnetic disk device and absorbed by the gas adsorption member mounted on the inner surface of the cover that seals the magnetic disk device. is doing.

[0006]

As described above, in the conventional magnetic disk device, the minute amount of corrosive gas generated from the adhesive or the constituent members is attached to the inner surface of the cover that seals the magnetic disk device. The surface between the two or more magnetic disks and the upper and lower surfaces of the magnetic disk of the magnetic disk device that has a small mounting space are located at the position where the gas adsorption member is mounted. It is located away from. Therefore, the corrosive gas generated at those positions is recovered when the corrosive gas is carried to the position of the gas adsorbing member by the air flow generated by the rotation of the spindle or the natural diffusion of the air in the magnetic disk device.

However, the rotation speed of the spindle is constant, and the peripheral speed of the magnetic disk is slower toward the inner peripheral side. Therefore, on the inner peripheral side of the magnetic disk, the force of pushing out the corrosive gas to the outside is weak, and therefore, there is a risk that the corrosive gas is stagnant and the recording or reproducing of information is disturbed.

[0008]

According to a first magnetic disk device of the present invention, a magnetic disk mounted on a rotating spindle, a clamper for fixing the magnetic disk, and at least a magnetic disk provided opposite to the magnetic disk are provided. One magnetic head and a suspension for holding the magnetic head;
A magnetic disk device comprising a positioner having an arm portion for holding the suspension and a drive unit for mounting the positioner to perform a positioning operation, having a gas adsorption member attached to at least a part of an outer periphery of the spindle. There is.

A second magnetic disk device of the present invention comprises a magnetic disk mounted on a rotating spindle, a clamper for fixing the magnetic disk, and at least one magnetic head provided so as to face the magnetic disk. A magnetic disk device comprising: a suspension that holds the magnetic head; a positioner that has an arm portion that holds the suspension; and a drive unit that mounts the positioner and performs a positioning operation, at least a part of the outer periphery of the clamper. It has a gas adsorption member attached to the.

A third magnetic disk device of the present invention comprises a magnetic disk mounted on a rotating spindle, a clamper for fixing the magnetic disk, and at least one magnetic head provided to face the magnetic disk. A magnetic disk device comprising: a suspension for holding the magnetic head; a positioner having an arm portion for holding the suspension; and a drive unit for mounting the positioner and performing a positioning operation. have.

According to a fourth magnetic disk device of the present invention, at least two magnetic disks mounted on a rotating spindle, a cylindrical disk spacer interposed between adjacent magnetic disks, and the magnetic disk. A clamper that fixes the magnetic disk, a magnetic head that faces the magnetic disk, and a suspension that holds the magnetic head,
A magnetic disk device comprising a positioner having an arm portion for holding the suspension and a drive portion for mounting the positioner to perform a positioning operation, having a gas adsorption member attached to at least a part of an outer periphery of the disk spacer. ing.

[0012]

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

FIG. 1 is a front view showing a main part of a first embodiment of the present invention, FIG. 5 is a view showing a gas adsorbing member of the embodiment of FIG. 1, (a) is a plan view, and (b) is a view. It is a XX sectional view.

In FIG. 1, the spindle 4 has a base 5
The magnetic disk 3 mounted on the spindle 4 is rotatably fixed to the spindle 4 by the clamper 2. The gas adsorption member 1 is mounted on all or part of the outer circumference of the spindle 4.

As shown in FIG. 5, the gas adsorbing member 1 has a gas adsorbent 42 enclosed between a cover 41 and an adhesive tape 43, and is fixed to the spindle 4 by the adhesive tape 43 and fixed to the magnetic disk 3. Adsorbs and removes the corrosive gas near the inner circumference.

FIG. 2 is a front view showing the main part of the second embodiment of the present invention.

In FIG. 2, the construction and operation of the spindle 14 and the base 15, the magnetic disk 13 and the clamper 12 are the same as the construction and operation of the corresponding parts of the embodiment of FIG. 1, respectively. The gas adsorbing member 11 is mounted on all or part of the outer circumference of the clamper 12.

The structure and operation of the gas adsorbing member 11 are the same as those of the embodiment shown in FIG.

FIG. 3 is a plan view showing an essential part of the third embodiment of the present invention.

In FIG. 3, a magnetic disk 23 mounted on a spindle (not shown) is fixed to the spindle by a clamper 22. The magnetic head 27 that records or reproduces information on or from the magnetic disk 23 is
The suspension 26 is held at the tip of a suspension 26 formed of a leaf spring, and the suspension 26 is held at the tip of an arm 28 provided in the magnetic head drive section. The suspension 26 moves to the inner peripheral portion of the magnetic disk 23 by the magnetic head positioning operation of the magnetic head drive unit. The gas adsorption member 21 is attached to the upper surface or the lower surface of the suspension 26.

The structure and operation of the gas adsorbing member 21 are the same as those of the embodiment shown in FIG.

FIG. 4 is a front view showing an essential part of the fourth embodiment of the present invention.

In FIG. 4, the spindle 34 is rotatably fixed to a base 35.
The four magnetic disks 33 mounted on the disk are fixed to the spindle 34 by the clamper 32. A cylindrical disk spacer 39 is interposed between the two adjacent magnetic disks 32, and holds the gap between the two adjacent magnetic disks 32 at a predetermined value. The gas adsorbing member 31 is attached to all or part of the outer periphery of the disk spacer 39.

The structure and operation of the gas adsorbing member 31 are the same as those of the embodiment shown in FIG.

[0025]

As described above, the magnetic disk device of the present invention is provided with a gas adsorption member on all or part of the outer circumference of the spindle, clamper or disk spacer, or on the upper or lower surface of the suspension. There is an effect that it is possible to remove the corrosive gas that stays in the inner peripheral portion of the disk, and therefore there is an effect that a highly reliable magnetic disk device that prevents the occurrence of information recording or reproduction obstacles can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a first embodiment of the present invention.

FIG. 2 is a front view showing a main part of a second embodiment of the present invention.

FIG. 3 is a plan view showing an essential part of a third embodiment of the present invention.

FIG. 4 is a front view showing a main part of a fourth embodiment of the present invention.

5 is a diagram showing a gas adsorption member of the embodiment of FIG.
(A) is a plan view and (b) is a sectional view taken along line XX.

[Explanation of symbols]

 1/11/21/31 Gas adsorption member 2/12/22/32 Clamper 3/13/33 Magnetic disk 4/14/34 Spindle 5/15/35 Base 26 Suspension 27 Magnetic head 28 Arm 39 Disk spacer 41 Cover 42 Gas adsorbent 43 Adhesive tape

Claims (4)

[Claims] 1. A magnetic disk mounted on a rotating spindle, a clamper for fixing the magnetic disk, at least one magnetic head provided to face the magnetic disk, and a suspension for holding the magnetic head. A magnetic disk device including a positioner having an arm portion for holding the suspension and a drive portion for mounting the positioner to perform a positioning operation, having a gas adsorption member attached to at least a part of an outer periphery of the spindle. Magnetic disk device characterized by. 2. A magnetic disk mounted on a rotating spindle, a clamper for fixing the magnetic disk, at least one magnetic head provided facing the magnetic disk, and a suspension for holding the magnetic head. A magnetic disk device including a positioner having an arm portion that holds the suspension and a drive portion that mounts the positioner and performs a positioning operation, having a gas adsorption member attached to at least a part of an outer periphery of the clamper. Magnetic disk device characterized by. 3. A magnetic disk mounted on a rotating spindle, a clamper for fixing the magnetic disk, at least one magnetic head provided to face the magnetic disk, and a suspension for holding the magnetic head. A magnetic disk device including a positioner having an arm portion for holding the suspension and a drive portion for mounting the positioner to perform a positioning operation, wherein the magnetic disk device has a gas adsorption member attached to the suspension. apparatus. 4. At least two magnetic disks mounted on a rotating spindle, a cylindrical disk spacer interposed between adjacent magnetic disks, a clamper for fixing the magnetic disks, and the magnetic disk. In a magnetic disk device including: a magnetic head provided to face the magnetic head; a suspension that holds the magnetic head; a positioner that has an arm portion that holds the suspension; and a drive unit that mounts the positioner and performs a positioning operation. A magnetic disk device comprising a gas adsorption member mounted on at least a part of an outer periphery of the disk spacer.