JPH0574132A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To improve the degree of cleanness of air in a magnetic disk device by making a flow of internally-circulating air large by making the air circulate forcedly, regarding the airflow of the magnetic disk device. CONSTITUTION:An electric air pump 6 is provided inside a magnetic disk device and sealed with a hermetically sealed vessel 5 so as to prevent occurrence of dust from the electric air pump 6. In order to clean air being made to circulate forcedly, an air filter 7a is provided between the blow-off side of the air pump 6 and a blow-off port 8 of the hermetically sealed vessel 5, while an air filter 7b is provided between the suction side of the air pump 6 and a suction port 9 of the hermetically sealed vessel 5. The device has a chamber 10 surrounded by a wall 2 and the air inside a disk enclosure, the air inside the chamber 10 in particular, is cleaned. According to this constitution, a flow of the air generated is made large and the capacity of air cleaning of the air filters is made large. At the same time, dust remaining in the air is removed sufficiently and occurrence of a head crush can be prevented.

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 an airflow in the magnetic disk device.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to the drawings.

FIG. 2 is a plan view of a conventional magnetic disk device.

In FIG. 2, a conventional magnetic disk device is a magnetic disk 3 capable of writing / reading information and a magnetic head 4 for performing a seek operation on the magnetic disk 3.
A head drive unit for driving the magnetic head 4 and a base plate 1 having a structure in which a spindle unit to which the magnetic disk 3 is attached are fixed and hermetically sealed; and an internal air which is arranged in the base plate 1 and hermetically sealed. It has an air filter c7c for cleaning dust.

[0005] Generally, the entire enclosed product including the base plate 1 having the closed structure is called a disk enclosure.

Next, the air flow of the conventional magnetic disk device will be described.

The air flow is generated by the rotation of the magnetic disk 3 (direction of arrow A), and the air flow flows in the direction of arrow C. Then, the air flows through the air filter c7c to clean the air inside the base plate 1, that is, inside the disk enclosure.

As described above, the conventional magnetic disk device is
The air filter 7 can be cleaned regardless of where the air filter 7 is arranged in the base plate 1 and where the air flows by the rotation of the magnetic disk 1.

[0009]

As described above, in the conventional magnetic disk device, the air flow is the source of generating the air flow only by the rotation of the magnetic disk, so that when the outer diameter of the magnetic disk becomes small. , The generated air flow also becomes smaller, the air cleaning capacity by the air filter becomes smaller, and at the same time the head crush caused by dust remaining in the air against the reduction in the flying height of the magnetic head due to the improvement of the recording density of the magnetic disk. There is a drawback that the probability of occurrence is high.

An object of the present invention is to provide a wall having an opening arranged in the vicinity of a magnetic disk in a disk enclosure, an electric air pump surrounded by an airtight container and supplying air to the opening of the wall, and a blowout of the electric air pump. Side and the air outlet of the closed container, a first air filter, a second air filter between the suction side of the electric air pump and the inlet of the closed container, and a chamber surrounded by a wall. However, by cleaning the air inside the disk enclosure, especially the air inside the chamber, the above drawbacks are eliminated, and even if the outer diameter of the magnetic disk becomes smaller, the generated air flow is increased and the air filter is used. At the same time as increasing the air cleaning capacity, the dust remaining in the air is sufficiently removed to reduce the flying height of the magnetic head by improving the recording density of the magnetic disk, and It is to provide a magnetic disk apparatus that can prevent occurrence of shoe.

[0011]

According to a first aspect of the present invention, there is provided a magnetic disk device comprising a magnetic disk medium arranged on a spindle and rotated by a spindle motor, and a magnetic head for writing / reading information on / from the magnetic disk medium. In a magnetic disk device having a disk enclosure having a structure in which a head drive unit that drives a magnetic head to perform a seek operation and a base plate to which a spindle is fixed are included and sealed, a spindle motor disposed on a spindle of a base plate in the disk enclosure. By partitioning the space around the rotating magnetic disk medium into an independent space, the vicinity of the magnetic disk medium is partitioned into chambers, and the first opening for passing air and the magnetic head seek operation on the magnetic disk medium are enabled. And a wall provided with the second opening.

A magnetic disk device according to a second aspect of the present invention is the magnetic disk device according to the first aspect of the present invention, further including an air pump for supplying air to the first opening of the wall.

A magnetic disk device according to a third aspect of the present invention is the magnetic disk device according to the second aspect of the present invention, which is disposed on the base plate in the disk enclosure and sucks air in the air pump and the disk enclosure. The container has a suction port that communicates with the suction side and a blowout port that sucks air from the suction port and blows it out from the blowing side of the air pump to supply the air to the first opening.

A magnetic disk device according to a fourth aspect of the present invention is the magnetic disk device according to the third aspect of the present invention, wherein each of the air pump suction side and the container suction port, and the air pump outlet side and the container outlet port in the container. It has an air filter between them.

[0015]

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

FIG. 1 is a plan view of a magnetic disk device according to an embodiment of the present invention.

In FIG. 1, the magnetic disk device of this embodiment comprises a magnetic disk 3 capable of writing / reading information,
A magnetic head 4 that performs a seek operation on the magnetic disk 3, a head drive unit that drives the magnetic head 4, and a base plate 1 that has a structure in which a spindle unit to which the magnetic disk 3 is attached is fixed and sealed. A wall 2 having an opening arranged near the magnetic disk 3 in the base plate 1, an electric air pump 6 which is surrounded by a hermetic container 5 and supplies air to the opening of the wall 2, and a blowing side of the electric air pump 6. An air filter a7a located between the air outlet 8 of the closed container 5, an air filter a7a located between the suction side of the electric air pump 6 and the intake port 9 of the closed container 5, and a chamber 10 surrounded by the wall 2. Have

As described in the section of the prior art, generally, the whole enclosure including the base plate 1 having the hermetically sealed structure is called a disk enclosure.

The airflow of the magnetic disk drive of this embodiment will be described.

When the magnetic disk 3 rotates (in the direction of arrow A), the magnetic head 4 floats above the surface of the magnetic disk 3. Since the magnetic disk 3 exists in the independent chamber 10 due to the wall 2 having the opening, the flow of air generated by the rotation of the magnetic disk 3 accumulates in the chamber 10 and the amount of the air flow in the chamber 10 increases. The outside air is less likely to enter the chamber 10.

Next, the air is guided from the arrow B to the suction port 9 by the electric air pump 6 in the closed container 5 and drawn into the electric air pop 6 through the air filter b7b.
Further, the air is discharged to the air outlet 8 through the air filter a7a. As a result, clean air is blown out to the air outlet 8, and the air from the air outlet 8 passes through the opening of the wall 2 into the chamber 10.
And clean air is supplied to the magnetic disk 3 and the magnetic head 4.

[0022]

As described above, in the magnetic disk device of the present invention, air is provided in the wall of the disk enclosure, which is located near the magnetic disk and has an opening, and the opening of the wall which is surrounded by the closed container. An electric air pump to supply, a first air filter between the outlet of the electric air pump and the outlet of the closed container, and a second air filter between the suction side of the electric air pump and the inlet of the closed container. , Having a chamber surrounded by a wall, by cleaning the air in the disk enclosure, especially the air in the chamber,
Even when the outer diameter of the magnetic disk becomes smaller, the generated air flow is increased and the air filter's air cleaning capacity is increased, while at the same time reducing the flying height of the magnetic head by improving the recording density of the magnetic disk. There is an effect that the dust remaining in the air can be sufficiently removed and the occurrence of head crash can be prevented.

[Brief description of drawings]

FIG. 1 is a plan view of a magnetic disk device according to an embodiment of the present invention.

FIG. 2 is a plan view of a conventional magnetic disk device.

[Explanation of symbols]

 1 Base Plate 2 Wall 3 Magnetic Disk 4 Magnetic Head 5 Airtight Container 6 Electric Air Pump 7a Air Filter a 7b Air Filter b 7c Air Filter c 8 Air Outlet 9 Inlet 10 Chamber

Claims (4)

[Claims] 1. A magnetic disk medium arranged on a spindle and rotated by a spindle motor, and a magnetic head for writing / reading information on / from the magnetic disk medium,
In a magnetic disk device having a disk enclosure having a structure in which a head drive unit that drives the magnetic head to perform a seek operation and a base plate to which the spindle is fixed are included and sealed, in a spindle of the base plate in the disk enclosure. The magnetic disk of the magnetic head and the first opening for partitioning the vicinity of the magnetic disk medium into a chamber so that the space in which the magnetic disk medium is placed and rotated by the spindle motor is independent. A magnetic disk drive having a wall provided with a second opening for enabling the seek operation on the medium. 2. The magnetic disk device according to claim 1, further comprising an air pump that supplies air to the first opening of the wall. 3. The magnetic disk device according to claim 2, wherein the magnetic disk device is arranged on the base plate in the disk enclosure and sucks the air in the air pump and the air in the disk enclosure to communicate with the suction side of the air pump. A magnetic disk device comprising: a container provided with an inlet and an outlet for sucking air from the inlet and blowing from the outlet side of the air pump to supply the air to the first opening. 4. The magnetic disk device according to claim 3, wherein an air filter is provided in the container between the air pump suction side and the container suction port, and between the air pump blowing side and the container blowing port. A magnetic disk drive characterized by having.