JPH01311490A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To expand memory capacity by increasing the number of magnetic disks without expanding a space occupied by a device by superposing plural disks mounted on spindles mutually in an area where no seek operation is performed by a magnetic head. CONSTITUTION:The plural magnetic disks 24 and 34 to be mounted on spindle mechanisms 22 and 32 are mounted by providing an interval to perform the seek operation by the magnetic heads 25 and 35. Also, since the spindle mechanisms 22 and 32 of mechanism parts 21 and 31 are formed in the same constitution, the interval where the magnetic disks 24 and 34 are arranged is also formed equally. Furthermore, the heads 25 and 35 are sought only in a certain area on the disks 24 and 34 decided by positions where carriage mechanisms 23 and 33 are arranged. Therefore, at the time of configuring a magnetic disk device providing with the mechanism parts 21 and 31, it is possible to save the space occupied by the whole of the mechanism parts by superposing the disks 24 and 34 so as not to be brought into contact with each other in a space part between the disks other than the area where the heads 25 and 35 perform the seek operation, and to increase the number of magnetic disks by that share.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a magnetic disk in which a plurality of magnetic disks are attached to a spindle mechanism, and signals are recorded and reproduced by a magnetic head corresponding to each magnetic disk. Regarding equipment.

(Prior Art) Magnetic disk devices are widely used as auxiliary storage devices in computer systems and the like. Generally, in a magnetic disk drive, a plurality of magnetic disks are attached to a spindle shaft, and signals are recorded and reproduced by a magnetic head corresponding to each disk. As shown in FIG. 3, such a conventional magnetic disk device has a spindle mechanism 1.
A plurality of magnetic disks 12 for recording signals are attached to one shaft. A magnetic head I3 for recording and reproducing signals on the magnetic disk 12 is provided corresponding to each magnetic disk 12'. For this reason, the magnetic disks 12 are mounted on the spindle mechanism 11 at intervals in the axial direction so that there is a space in which the magnetic head 13 can perform a seek operation. The magnetic head 13 is moved in the radial direction of the magnetic disk 12 through a space provided between the magnetic disks 12 by a carriage 14 that constitutes a carriage mechanism, and is positioned on the magnetic disk 12. The carriage mechanism shown here is a rotary head drive mechanism that rotationally drives the carriage I4. The carriage 14 is driven by a voice coil motor (VCM) 15 whose drive is controlled by a positioning control system.

Control circuits such as a motor drive circuit that controls the spindle motor 11 that rotates the magnetic disk 12 and a read/write circuit that controls recording and reproduction of signals are provided on the flexible printed circuit board 16. The mechanical parts constituting such a magnetic disk device are arranged on a base 17, and a disk enclosure 18 is fixed to this base 17 with screws 19 or the like and hermetically sealed.

Nowadays, for example, when image processing is performed using a personal computer, some processing requires a large amount of storage capacity. For this reason, magnetic disk devices are also required to have a larger storage capacity.

In order to increase the storage capacity of a magnetic disk device, there is a method of increasing the number of magnetic disks.

Increasing the number of magnetic disks can be achieved, for example, by providing a plurality of mechanical units as described above already configured as a magnetic disk device. For example, there is a method of providing a plurality of mechanical units configured as a 5-inch magnetic disk device in a case for an 8-inch magnetic disk device.

However, if a plurality of mechanical units configured simply as magnetic disks are installed, the device becomes larger. For example, if two mechanical units are provided, the size of the enclosure 18 for storing this device will be more than twice as large because a wasted space will be created between each mechanical unit.

(Problem to be Solved by the Invention) As described above, in order to increase the capacity of a magnetic disk device, there is a method of providing a plurality of mechanical parts of a conventional magnetic disk device. There was a problem in that the entire device became large.

The present invention has been made in view of the above points, and an object of the present invention is to provide a magnetic disk device that can increase the number of magnetic disks and increase the storage capacity without increasing the size of the device. purpose.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes a spindle mechanism in which a plurality of magnetic disks are mounted at intervals in the axial direction, and a carriage mechanism that drives a magnetic head corresponding to the magnetic disks. In the magnetic disk device provided, there are a plurality of spindle mechanisms arranged one above the other so that the magnetic disks attached to the spindle mechanisms are located between each other, and the magnetic disks corresponding to each of the spindle mechanisms are arranged one above the other. The magnetic head is configured to include a plurality of carriage mechanisms arranged so as to perform a seek operation of the magnetic head in areas other than the areas where the magnetic head is located.

(Function) In the magnetic disk device configured in this way, the magnetic disks of the plurality of installed magnetic disk components are positioned mutually in the space between the magnetic disks for the magnetic head to perform a seek operation. By stacking the magnetic disks on top of each other, the overall size of the device can be made smaller according to the area of the stacked magnetic disks.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the internal structure of a magnetic disk device according to the same embodiment. In FIG. 1, the magnetic disk device has two mechanical units 21 and 31 configured as a 5-inch magnetic disk device arranged in a case 20 for an 8-inch magnetic disk device. Each mechanism part 21.
The spindle mechanism 22, 32, carriage mechanism 23, 33, etc. of 31 are the same as those of the conventional magnetic disk device shown in FIG. Each spindle mechanism 22.32 has a magnetic disk 2.
4.34 are arranged so that some of them overlap each other. Furthermore, the carriage mechanisms 23.33 corresponding to each spindle mechanism 22.32 are arranged at positions where the magnetic head 25.35 can perform a seek operation in a region other than the area where the magnetic disks 24.34 are overlapped.

As shown in FIG. 2, the magnetic disks 24.34 attached to each spindle mechanism 22.32 are arranged so as to be located between each other without contacting each other in the overlapping region.

Next, the effects of this embodiment will be explained.

A plurality of magnetic disks 24. mounted on a spindle mechanism 22.32. 34 is a magnetic head 25. 35 are installed at intervals for performing a seek operation.

In addition, the spindle mechanism 22゜32 of each mechanism section 21.31
have the same configuration, so the magnetic disk 2
4.34 are installed at equal intervals. Furthermore, the magnetic head 25.35 has a carriage mechanism 23.3.
Magnetic disk 2 determined by the position where 3 is placed
4. Only a certain area on 34 is sought.

Therefore, when configuring a magnetic disk device including two mechanical sections 21.31, the magnetic disks 24.34 are moved in the space between the magnetic disks outside the area where the magnetic head 25.35 performs a seek operation. By stacking them on top of each other without contacting each other, the space occupied by the total mechanism can be reduced accordingly.

As a result, the number of magnetic disks can be increased by providing two mechanical sections 21, 31 without increasing the size of the case 20 of the magnetic disk device.

In the above embodiment, two mechanical units configured as a 5-inch magnetic disk device are provided in a case for an 8-inch magnetic disk device, but the present invention is not limited to this. 3,5 in the case for the disk device
It is possible to install two mechanical units configured as 8-inch magnetic disk drives, or install three mechanical units in a case for an 8-inch magnetic disk drive.
．． It is also possible to configure a magnetic disk device by providing several mechanical units configured as a 5-inch magnetic disk device.

[Effects of the Invention] As described above, according to the present invention, a plurality of mechanical units configured as magnetic disk devices are provided, and a plurality of magnetic disks attached to a spindle are mutually connected in an area where a magnetic head does not perform a seek operation. By superimposing
The storage capacity can be increased by increasing the number of magnetic disks without increasing the space occupied by the device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing the internal configuration of a magnetic disk device according to an embodiment of the present invention, FIG. 2 is a side sectional view of a spindle mechanism in the embodiment, and FIG. FIG. 1 is an exploded perspective view showing the configuration of a conventional magnetic disk device. 20... Case, 21.31... Mechanism part, 22.3
2... Spindle mechanism, 23.33... Carriage mechanism, 24.34... Magnetic disk, 25.35...
・Magnetic head. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Scope of Claims] A magnetic disk device including a spindle mechanism in which a plurality of magnetic disks are mounted at intervals in the axial direction, and a carriage mechanism that drives each magnetic head corresponding to the magnetic disk, wherein one of the magnetic disks a plurality of spindle mechanisms arranged so as to overlap each other at a predetermined interval with the other magnetic disk; A magnetic disk device comprising a plurality of carriage mechanisms arranged to perform a seek operation of the magnetic head.