JPH02172086A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To eliminate the need of a filter frame and to prevent nap from happening and also to avoid the occurrence of a head crush, etc., by providing a circulation filter fixing and supporting structure capable of directly inserting into a base plate at the time of fitting a circulation filter to the magnetic disk device. CONSTITUTION:A magnetic disk 11 as fixed to a spindle motor 13 is rotated to float a magnetic head 12 supported by an actuator 14, and the head 12 is rotted by a voice-coil motor 15. Since an airflow is generated by this rotation, in which an oil component contained in a magnetic fluid and vapor, etc., are contained, and these cause the occurrence of the head crush, the circulation filter 18 is fixed by a filter fixing means 17 provided newly to the base late 16. That is, the conventional arrangement of a framed filter in an enclosure is abandoned, but a filter is directly fitted to the base plate 16. Consequently, the plate 16 is provided with bar-shaed protrusions in three places, in which the filter 18 is folded and inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application 1] The present invention relates to a 6n air disk device, and specifically relates to the structure of a base plate that fixedly supports a circulation filter.

[Prior art J] Conventionally, as shown in FIG. 3, fJi! bt filter 38
is fixed to the filter frame 39 with adhesive etc., and the circulation filter 3
8 and the filter frame 39, and also create a recess in the base plate (not particularly shown) that has approximately the same shape as the filter frame 39, thereby creating a circulation filter. A magnetic disk drive has been known that has a base plate structure that is fixedly supported inside a disk enclosure.

[Problem to be solved by the invention]

However, conventional magnetic disk mounting has the following problems.

1) To glue the flHjK filter to the filter frame,
Fluff, etc. are likely to occur on the circulation filter, and head crashes due to the fluff, or head crashes caused by a decrease in the dust collection efficiency of the circulation filter due to the generation of fluff, are likely to occur.

2) Furthermore, since an assembly process for bonding the circulation filter to the filter frame is required, there is a limit to cost reduction.

3) Furthermore, the worker who glues the circulation filter must manage the amount of adhesive used to prevent a drop in dust collection efficiency, and be careful not to cause fluff, which indirectly reduces costs. was hindering.

4) The circulation filter passes through the filter frame to the disk.
Since it is fixedly supported inside the enclosure, the area of the circulation filter due to the filter frame is inevitably reduced, which significantly reduces dust collection efficiency.

Therefore, in order to solve these conventional problems, the present invention
By providing a simple structure in which the base plate is provided with a concavity and convexity into which the circulation filter is directly inserted, a low-cost magnetic disk device is provided because the filter frame is eliminated, and the adhesion process is eliminated due to the abolition of the filter frame.
The object of the present invention is to provide a highly reliable 6n air disk device that is less prone to head crashes due to the prevention of fluff by eliminating the bonding process.

[Means for Solving the Problems] In order to solve the above problems, a 6n air disk device of the present invention includes at least one magnetic disk, at least one magnetic head corresponding to the magnetic disk, and a 6n air disk. a spindle motor that rotates the magnetic head, an actuator that fixedly supports the magnetic head, an actuator motor that moves the actuator, a base plate that fixes the spindle motor and the actuator motor, a chamber that covers the base plate, and a base. - A 51 air disk device having a circulation filter for collecting dust generated inside a disk enclosure composed of a plate and a chamber, characterized by having means for fixedly supporting the circulation filter on the base plate.

〔Example〕

Embodiments of the present invention will be described below based on the drawings. FIG. 1 is a main plan view showing an embodiment of a magnetic disk device of the present invention. The magnetic disk 11 is fixed to a spindle motor 13, and as the spindle motor rotates, the magnetic disk also rotates. As the magnetic disk rotates, the magnetic head 12 supported by the actuator 14 floats, and the magnetic head 12 is moved by the actuator motor 15 (voice coil motor in the case of FIG. 1).

The rotation of the magnetic disk generates an airflow inside the disk enclosure (not shown), and this airflow contains dust generated by the contact start/stop and dust contained in the magnetic fluid of the spindle motor. This includes oil, water vapor inside the disk enclosure, etc. The circulation filter 18 that collects these head crash generating factors is fixedly supported by a filter fixing support means 17 provided on the base plate 16.

In FIG. 1, the base plate 16 is provided with rod-shaped protrusions at three locations, and the bent circulation filter 18 is inserted into the protrusions and fixedly supported. The base plate is generally made by Gui-casting, and it is technically easy to provide the base plate with protrusions (filter fixing support means 17) as shown in Fig. 1. It is possible to do this with almost no increase in cost.

Conventionally, in many magnetic disk drives, the circulation filter is fixedly supported within the disk enclosure through a filter frame because the base plate is made by goo-casting. Due to the Gui cast, all of the base plates had tapers, and a filter frame had to be used to secure things within the disk enclosure.

Furthermore, in many conventional magnetic disk drives, the diameter of the 6n disk is 5 inches or more, and there is no need to consider that the space within the disk enclosure will be reduced by the filter frame.

However, in recent years, as magnetic disk drives have become more compact, the magnetic disk drive of the present invention can eliminate the conventional filter frame by simply putting into practical use the simple idea of inserting a circulation filter directly into the base plate. Not only is it possible to reduce the cost of the magnetic disk drive by eliminating the filter assembly fabrication process by eliminating the filter frame, but also the reliability is improved by reducing the occurrence of fuzz on the filter.
By eliminating the filter frame, it becomes possible to effectively utilize (space saving) the inside of the disk enclosure of a small magnetic disk device, and the effects of the present invention are tremendous.

Furthermore, in FIG. 1, the circulation filter is bent, which makes effective use of the space used in conventional filter frames, and provides the magnetic disk drive of the present invention with a filter surface area that is incomparable to that of conventional filters. It will be done.

In other words, since the magnetic disk drive of the present invention can increase the filter surface area in the same space as the conventional one, it is possible to improve the dust collection efficiency in the disk enclosure and improve the reliability of the magnetic disk drive. It has the following effect.

FIG. 2 is a main plan view showing another embodiment of the Iin disk device of the present invention. The magnetic disk 21 is fixed to the spindle motor 13, and the actuator 24
The magnetic head 22 supported by the actuator
In this embodiment, the base plate 26 is moved by a motor 25 (in the case of FIG. 2, a stepper motor).
FIG. 2 shows a filter fixing support means 27 consisting of a groove in which a circulation filter 28 can be inserted and a protrusion for holding the circulation filter.

As can be seen from this embodiment and the embodiment shown in FIG. It is obvious that the same effects as the embodiment of the present invention described above with reference to FIG. 1 can be expected no matter what shape the support structure is made. Also, the base
Chamber that mates with the plate (not specifically shown)
Needless to say, the same effect can be obtained even if a filter fixing support structure is provided.

[Effects of the Invention] As explained above, the present invention has the following effects by taking the simple measure of providing a filter fixing support structure into which a circulation filter can be inserted directly into the base plate of a magnetic disk drive.

1) Since there is no need to glue the filter frame, it is possible to prevent the occurrence of fluff, reduce the dust collection efficiency of the circulation filter by preventing the generation of fluff, and prevent head crashes, which improves the reliability of magnetic disk drives. This has the effect of making it possible to improve

2) Since the filter frame is unnecessary and the filter adhesion process is omitted, the cost of the magnetic disk device can be reduced.

3) Furthermore, the work of gluing the circulation filter is a complicated process that is difficult to manage, such as managing the adhesive and checking for lint, but by eliminating this process, assembly of the magnetic disk device can be improved. This has the effect of reducing costs.

4) By removing the filter frame, the surface area of the filter becomes wider, and the efficiency of collecting dust in the disk enclosure is greatly improved, which has the effect of dramatically improving the reliability of the En-air disk device. Furthermore, it not only makes it possible to effectively utilize the space within a small magnetic disk device, but also provides flexibility in the development and design of future 6n disk devices.

As described above, the practical effects of the present invention are extremely large.

[Brief explanation of the drawing]

FIG. 1 is a main plan view showing an embodiment of the 6n air disk device of the present invention. FIG. 2 is a main plan view showing another embodiment of the 6n air disk device of the present invention. FIG. 3 is a perspective view showing a conventional 5n air disk device. 38 ・ 39 ・ ・Circulation filter・Filter frame・Magnetic device, disk・Magnetic head・Spindle・Motor・Actuator・Actuator・Motor・Base・Plate・Filter fixing support structure・Circulation filter・Magnetic disk・Magnetic head・Spindle・Motor・Actuator ・Actuator ・Motor ・Base ・Plate ・Filter fixed support structure ・Circulation filter Applicant Seiko Epson Corporation Representative Patent attorney Kizobe Suzuki (and 1 other person) 7, Fill L/Fixed handle 6 8. King Inari [Fukui 1st figure 1]

Claims (1)

[Claims] at least one magnetic disk, at least one magnetic head corresponding to the magnetic disk, a spindle motor for rotating the magnetic disk, an actuator for fixedly supporting the magnetic head, and an actuator for moving the actuator. A motor, a base plate that fixes the spindle motor and the actuator motor, a chamber that covers the base plate, and a disk enclosure that captures dust generated inside the disk enclosure that includes the base plate and the chamber. What is claimed is: 1. A magnetic disk drive having a circulation filter that collects the circulation, the magnetic disk drive comprising means for fixedly supporting the circulation filter on the base plate.