JPH04291082A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To facilitate the attachment and detachment of an air filter and to provide the inexpensive dustproof structure of the magnetic disk device by providing air filter-mounting grooves on a cover and base by integral molding. CONSTITUTION:The cover is put on the base 6 to form a hermetic structure so as to prevent the infiltration of the dust from the outside. A magnetic disk 1 is rotate by a spindle motor 2 to generate the flow of the air and the dust suspended in the magnetic disk device is passed through the air filter 5 mounted in the air filter-mounting grooves 7 provided on the base 6 and the cover by integral molding, by which the cleaned (dustfree) air is sent onto the magnetic disk 1. The inexpensive dustproof structure for the magnetic disk device is obtd. in this way.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air filter mounting structure for a magnetic disk device used as an external storage device for an information processing device.

0002

[Prior Art] In a magnetic disk drive, a magnetic head flies low over a magnetic disk while recording/reproducing information, and even minute dust can enter between the magnetic head and the magnetic disk and damage the magnetic disk. This may lead to the destruction of information. For this reason, parts to be housed in the HDA are subjected to ultrasonic cleaning, etc., and all assembled parts are assembled in a dust-proof room in a very clean atmosphere. Furthermore, although magnetic disk drives have a sealed structure to prevent dust from entering from the outside, no matter how careful you are, a certain amount of foreign particles will float inside the magnetic disk drive. The dust-proof structure inside the conventional magnetic disk device is based on Utility Model Application No. 61-1
As shown in 49196, an air filter is provided to collect these foreign particles and send dust-free cleaned air over the magnetic disk.The air filter is stored in a special case and then attached to the base etc. It is stored in a magnetic disk drive.

0003

[Problems to be Solved by the Invention] In the conventional example of the above structure, the air filter is housed in a special case so that it can be housed in the sealed body of the magnetic disk drive, and the end face of the air filter (the face in contact with the case) is ), the area around it must be sealed with adhesive, etc. to completely seal it. Furthermore, when adhering, the work is difficult because the end faces are not flat, the number of man-hours is increased, and the dust-proof mechanism becomes very expensive, making it unsuitable for small magnetic disk drives that should be manufactured at low cost.

0004

[Means for solving the problem] As shown in Figure 1, the base cover that houses the magnetic disk, magnetic head, etc. and has a sealed structure is generally manufactured by aluminum die-casting, and air is removed during molding. The air filter can be easily attached by manufacturing the filter mounting groove by integral molding.

[0005]

[Operation] Air filter installation is easy because you just insert the air filter into the air filter installation groove.

[0006]

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing the present invention, in which (a) is a plan view of a magnetic disk drive with a cover removed, and (b) is a detailed view of an air filter installation.

In FIG. 1, when the magnetic disk drive is stopped, a magnetic head 3 is provided on the magnetic disk 1, and a required number of magnetic disks 1 are stacked on the spindle motor 2 to drive the spindle motor 22. By rotating at a predetermined speed, an air flow is generated, and the magnetic head 3 is levitated above the magnetic disk 1 by the air bearing effect. A required number of magnetic heads 3 are stacked on an actuator 4 and positioned on the magnetic disk 1 to record/reproduce information. The space between the magnetic disk surface 1 and the magnetic head 3 tends to become narrower due to higher density (0.
(2 μm or less), if even minute dust is on the magnetic disk 1, it will enter between the magnetic disk 1 and the magnetic head 3, which are rotating at high speed, and cause damage to the magnetic disk surface, making it impossible to record/reproduce information. becomes. Therefore, in order to send dust-free air over the magnetic disk 1, an air filter mounting groove 7 is provided in the base 6 in the middle of the air flow, as shown in (b), and the air filter 5 is inserted into the simple structure. There is.

FIGS. 2-4 show details of the embodiment. Figure 2
An air filter mounting groove 7 is provided in the base 6, the air filter 5 is inserted, and the air filter 5 is fixed to the cover 8 with an air filter holder 9. Figure 3 shows a structure in which air filter mounting grooves 7 are provided in the base 6 and cover 8, and separate air filters 5 are inserted into the base 6 and cover 8, and (b) shows a structure in which the air filters 5 are fixed to each other. , (c), the air filter 5 attached to the base 6 is fixed in the air filter attachment groove 7 of the cover 8, and the air filter 5 attached to the cover 8 is fixed in the air filter attachment groove 7 of the base 6.
Fix it with. Figure 4 shows the base 6 and cover 8 as in Figure 3.
Although an air filter mounting groove 7 is provided in the base 6 and the cover 8, only one air filter 5 is used.

It should be noted that the present invention is not limited to the above embodiments. For example, Fig. 5 shows a structure in which the air filter 5 is inserted into the air filter mounting bracket 10 and fixed to the base 6 or cover 8, and the fixing method is to glue or screw the air filter mounting bracket 10. . Further, as shown in FIG. 6, a plurality of n air filter 25 mounting structures are provided, and the magnetic disk 1
The structure is such that cleaned air is sent from above.

In the above embodiment, adhesive is applied around the air filter 5 to seal the air filter 5 with the air filter mounting groove 7 and the air filter mounting bracket 10. The air filter 5 may be attached to the air filter mounting bracket 10.

[0011]

As explained above, according to the present invention, by integrally molding the air filter mounting groove on the cover and base, the air filter can be easily attached and detached, and an inexpensive dustproof structure of the magnetic disk drive can be achieved. realizable.

[Brief explanation of the drawing]

1 shows a structural plane and mounting part of an air filter; FIG.

FIG. 2 is a cross-sectional view taken along line AA and line BB of Example 1.

[Figure 3] A-A, CC of Example 2 and C of Example 3
-C sectional view.

FIG. 4 is a cross-sectional view taken along line AA and line DD of Example 4.

FIG. 5 is a perspective view of Application Example 1.

FIG. 6 is a diagram showing a plane and an E-E cross section of Application Example 2.

[Explanation of symbols]

1...Magnetic disk 2...Spindle motor 3...Magnetic head 4...Actuator 5...Air filter 6...Base 7...Air filter mounting groove 8...Cover 9...Air filter holder

Claims (2)

[Claims] 1. A magnetic disk, a spindle motor that supports and rotates the magnetic disk, a magnetic head that records and reproduces information, an actuator that positions the magnetic head on the magnetic disk, and a spindle motor that supports and rotates the magnetic disk. In a magnetic disk drive comprising an air filter for sending dust-free air to the air filter, and a base cover that houses the parts and has a sealed structure, a mounting structure for the air filter is integrally formed on the base and the cover. A magnetic disk device characterized by: 2. A magnetic disk drive according to claim 1, wherein said base and said cover are integrally molded with mounting structures for a plurality of air filters.