JPS6332795A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To keep the relation of dimension with high accuracy by providing a hollow hole to a shaft supporting a rotary mechanism part and using an upper fan to cool a drive motor at the lower part through the hollow hole thereby suppressing the temperature rise of the device. CONSTITUTION:A hollow shaft 6 is formed by providing a hollow hole to the shaft 6 supporting a rotation mechanism section 2, the drive motor 8 is arranged to the lower part and a fan 7 is arranged at the upper part opposite to the lower part. Through the constitution above, the fan 7 is operated as soon as the magnetic disk 1 is driven and the motor 8 is cooled by the cooling fan. Since the heat of motor is cooled surely, the temperature rise of the device is suppressed lower, the thermal deformation is minimized to keep the relation of dimension with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk device, and more particularly to a magnetic disk device having a cooling structure that utilizes air circulation in the magnetic disk device.

[Prior art] Conventionally, this type of magnetic disk device circulates the heat around the rotating mechanism of the magnetic disk device internally using an air flow generated by the rotation of the magnetic disk, in order to suppress the increase in fA degree by one degree. The structure was such that the housing was cooled by providing a large number of V-clips in the housing and blowing air with an external fan.

[Problem that the invention seeks to solve]

In the magnetic disk device described above, when the magnetic disk rotates, heat is generated near the motor that drives the rotation mechanism, and the generated heat warms the inside of the magnetic disk device. There has been a drawback that the rotation mechanism and positioning mechanism within the magnetic disk device are thermally deformed due to heat, causing errors in the positioning of the magnetic head, resulting in a failure to achieve the required accuracy.

[Failure to solve the problem]

The present invention has been made to address the above-mentioned conventional problems, and provides a magnetic disk device that can forcibly cool the heat generated during disk rotation from within the rotating mechanism.

According to the present invention, in a magnetic disk device in which a rotation mechanism section for stacking a plurality of magnetic disks and a positioning mechanism for mounting a magnetic head disposed facing the magnetic disks are accommodated in a housing, A magnetic disk device is obtained in which a hollow hole is provided in a shaft that supports a mechanism section and a fan is disposed at a position facing a motor that drives the rotating mechanism section.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the air circulation state of a magnetic disk device according to an embodiment of the present invention, and FIG. 2 is a diagram showing the air circulation state of a conventional magnetic disk.

A plurality of magnetic disks 1 are stacked on a rotating mechanism s2, and are housed in a housing 5 together with a positioning mechanism 4 that mounts a magnetic head 3 disposed opposite to the magnetic disks 1. Hollow shirt that supports the rotating mechanism part) 6a
A fan 7 is provided at one end, and when the rotating mechanism drive motor 8 rotates, the fan 7 is caused to rotate, and the resulting air flow (indicated by the arrow in FIG. 1) is directed into the hollow part of the shaft 6a. obtain. With this configuration, the heat generated by the motor 8 is forcibly cooled from inside the rotation mechanism when the motor 8 rotates on the day 221.

〔Effect of the invention〕

As explained above, in the present invention, the fan rotation that operates simultaneously with the rotation of the magnetic disk cools the heat generated by the motor, thereby making it possible to suppress the temperature rise in the device. Therefore, the effect of minimizing thermal deformation of each mechanical part due to temperature changes is obtained, and a high degree of dimensional relationship is maintained.

This has the effect that the device operates stably and the reliability of the device can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the air circulation state of a magnetic disk drive according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the air circulation state of a conventional magnetic disk drive. ■... Magnetic disk, 2... Rotating mechanism section, 3... Magnetic head, 4... Positioning mechanism, 5... Housing, 6a...
Hollow perforated shaft, 6b...Leather section 2nd section

Claims (1)

[Claims] A shaft that supports the rotation mechanism in a magnetic disk device that houses in a housing a rotation mechanism that stacks a plurality of magnetic disks and a positioning mechanism that mounts a magnetic head disposed facing the magnetic disks. What is claimed is: 1. A magnetic disk drive comprising: a hollow hole provided in the magnetic disk drive; and a fan disposed at a position facing a motor that drives the rotation mechanism.