JPH04358389A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To provide a magnetic disk device capable of utilizing effectively the rotational energy of a magnetic disk and cleaning with an effective filter by performing circulation of air between an inner periphery and outer periphery. CONSTITUTION:Air guides 10-12 are provided on a magnetic disk device cover 9, the flow of this side of a swing arm is guided to a stagnation point and the air flow from the stagnation point (positive pressure) to the inner periphery negative pressure) of the magnetic disk 1 is made. Then, the filter 6 is set on the way of the air flow 8.

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 used as an auxiliary storage device for a computer, and particularly to the filtration of air within its closed container.

0002

[Prior art] Fig. 5 shows, for example, the Japanese Patent Publication No. 62-279587.
1 is a diagram showing a partial structure of a conventional magnetic disk device disclosed in the publication. In the figure, 1 is a magnetic disk that holds information recorded by magnetic means, 2 is a rotating shaft to which a plurality of magnetic disks 1 are attached and a spindle motor is built inside, and 3 is a magnetic disk device cover (not shown). ) and a magnetic disk device base that constitutes a sealed container,
4 is a magnetic head that performs magnetic recording on the magnetic disk 1; 5 is a voice coil motor that moves the magnetic head 4 to an arbitrary position on the radius of the magnetic disk 1; and 6 is a magnetic head that is formed on the recording surface by the rotation of the magnetic disk 1. In the filter for taking in air, 7 indicates the rotational direction of the magnetic disk 1, and 8 indicates the air flow.A stagnation point 8a occurs in the outer circumference air flow 8A, the inner circumference air flow 8B, and the outer circumference air flow 8A.

Next, the operation will be explained. As the magnetic disk 1 rotates, an air flow 8 is generated around it.
A part of the dust flows into the filter 6 and collects dust generated by contact between the magnetic head 4 and the magnetic disk 1 in the magnetic disk device or by friction of the bearing. The dust-laden air flow 8 is mainly filtered by the filter 6. Further, the attachment location is located downstream of the magnetic head 4, and is installed at the corner of the magnetic disk device cover and the magnetic disk device base 3 so that generated dust can be easily collected.

0004

[Problems to be Solved by the Invention] Since the conventional magnetic disk drive is constructed as described above, the airflow 8 flowing into the filter 6 is susceptible to air turbulence depending on the head position, and the amount of air passing through the filter is insufficient. It is easier to stabilize,
In addition, the outer circumferential air flow 8A and the inner circumferential air flow 8B are not circulated and the inner circumferential air is not sufficiently cleaned, and there are many stagnation points 8a caused by obstacles or points far from the magnetic disk 1. There was a problem in that the rotational energy of the disk 1 could not be efficiently used for cleaning the filter 6.

[0005] This invention was made in order to solve the above-mentioned problems, and by circulating the air between the inner and outer circumferences, the rotational energy of the magnetic disk can be used efficiently, and an efficient filter can be obtained. An object of the present invention is to obtain a magnetic disk device that can be cleaned by cleaning.

[0006]

[Means for Solving the Problems] A magnetic disk drive according to the present invention includes an air guide provided on the cover to guide the flow in front of the swing arm to a stagnation point, and a magnetic disk drive from the stagnation point (positive pressure). An air flow toward the inner circumference (negative pressure) is created by the air guide, and a filter is installed in the middle of the air flow. Further, in the magnetic disk device according to the present invention, a duct is installed between the magnetic disks to guide air around the inner periphery of the magnetic disks to the outside of the magnetic disks in front of the filter.

[0007]

According to the present invention, the guide of the magnetic disk device cover allows efficient air flow as the magnetic disk rotates, and the guide also causes air to circulate between the inner and outer circumferences of the magnetic disk. Furthermore, since a filter is installed in the middle of this circulation flow path, the airflow cleaned by the filter flows into the magnetic head and cleans the inside of the magnetic disk drive, which is efficient. Since it flows into the magnetic head, head crashes are also reduced. In addition, in this invention, the duct between the magnetic disks allows efficient air circulation between the inner and outer peripheries of the magnetic disk as the magnetic disk rotates, and the duct circulates air from the inner periphery to the magnetic head outside the magnetic disk. Since the air is carried to the filter at the rear of the filter, the proportion of dust generated by friction between the inner magnetic head and the magnetic disk, which is difficult to clean in the past, is collected by the filter.
Cleaned air flows into the magnetic head, reducing head crashes.

[0008]

【Example】

Embodiment 1 An embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan view of a magnetic disk device, and FIG. 2 is a perspective view of the magnetic disk device in which the present invention shown in FIG. The explanation will be omitted. In the figure, reference numeral 9 denotes a magnetic disk drive cover that forms an airtight container together with the magnetic disk drive base 3, and 10 indicates a guide a provided on the magnetic disk drive cover 9 to guide the air flow 8 from a stagnation point to the center of the magnetic disk 1. , 11 are guides b, 12 provided on the magnetic disk drive cover 9 to guide the air flow 8 to the stagnation point.
is a guide c provided on the magnetic disk device cover 9 to prevent the airflow 8 from mixing with other airflows generated by the rotation of the magnetic disk 1. Note that the filter 6 is installed in a flow path formed by the guides a, b, c, and 10 to 12.

Next, the operation will be explained. As the magnetic disk 1 rotates, an air flow 8 is generated around the magnetic disk 1, and a part of the air flow flows into the filter 6 in the flow path, causing contact between the magnetic head 4 and the magnetic disk 1 in the magnetic disk device, or preventing the bearing from contacting the magnetic head 4 and the magnetic disk 1. Dust generated by friction is filtered by a filter 6. The airflow 8 within the magnetic disk device flows from a stagnation point, which is a positive pressure, toward the center of the magnetic disk 1, which is a negative pressure.

Embodiment 2 Another embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 is a plan view of a magnetic disk device, and FIG. 4 is a perspective view of the magnetic disk device in which the present invention shown in FIG. The explanation will be omitted. In the figure, a duct 13 is provided between the magnetic disks 1 and guides the airflow 8B from the inner circumference to the outer circumference.

Next, the operation will be explained. As the magnetic disk 1 rotates, air flows 8A around the inner and outer circumferences of the magnetic disk 1.
8B is generated, and dust is generated due to contact between the magnetic head 4 and the magnetic disk 1 in the magnetic disk device or friction of the bearing. Inner air flow 8B containing the dust
is passed through the duct 13, and the peripheral air flow 8A is filtered by the filter 6 in the conventional manner.

0012

[Effects of the Invention] As described above, according to the present invention, the rotational energy of the magnetic disk can be used efficiently by circulating the air between the inner and outer circumferences, and cleaning can be performed using an efficient filter. can get.

[Brief explanation of drawings]

FIG. 1 is a plan view of an apparatus showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the apparatus in which the invention shown in FIG. 1 is practiced;

FIG. 3 is a plan view of an apparatus showing a second embodiment of the present invention.

FIG. 4 is a perspective view of the apparatus in which the invention shown in FIG. 3 is practiced;

FIG. 5 is a plan view of a conventional magnetic disk device.

[Explanation of symbols]

1 Magnetic disk 2 Rotation axis 3. Magnetic disk device base 4 Magnetic head 5 Voice coil motor 6 Filter 8 Air flow 9 Magnetic disk unit cover 10-12 Guide 13 Duct

Claims (2)

[Claims] 1. A case that is an airtight container, a hub that rotates around a predetermined axis to which a magnetic disk is attached, and a magnetic head that records and reproduces information from any position on the magnetic disk are combined to form a magnetic disk. A voice coil motor that moves the head to an arbitrary position on the magnetic disk, and a filter that is disposed in the case and removes dust from the dust-containing gas in the case, which eliminates turbulence and stagnation points. A magnetic disk device characterized in that a guide is provided in a magnetic disk device cover to create a flow path in order to prevent the occurrence of such occurrence and promote an efficient filter effect, and the filter is installed in this flow path. 2. A case that is an airtight container, a hub to which a magnetic disk is attached and rotates around a predetermined axis, and a magnetic head that records and reproduces information from any position on the magnetic disk are combined to generate the magnetic disk. A voice coil motor that moves a head to an arbitrary position on the magnetic disk, and a filter disposed in the case to remove dust from the dust-containing gas in the case, wherein air is guided to the filter. A magnetic disk device characterized in that a duct is installed from the inner circumference of the magnetic disk toward the outer circumference so as to promote circulation between air on the inner circumference of the magnetic disk and air on the outer circumference of the magnetic disk.