JPS6295766A - Magnetic disc device - Google Patents

Abstract

PURPOSE:To attain read of various kinds of diskettes without extension of a magnetic disc device by providing a spindle position control section to decide the spindle position and a spindle position storage section storing information required for the movement of the spindle. CONSTITUTION:A spindle position control section 18 discriminates the size of a diskette based on the information obtained from a microswitch 7, the information of the diskette of the corresponding size is extracted from a spindle position storage section 8 to control a spindle base moving wheel 2 and a spindle based drive wheel 5 thereby moving the spindle base 3 to the stored position. Further, a head read/write section 9 to read data from the diskette, a head drive section 10 and an index detection sensor 11 to detect the track position of the diskette realize the read/write function to read the data from the diskette or to write the data on the diskette.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a magnetic disk device, and particularly to a spindle device.

(Prior Art) Conventionally, this type of magnetic disk drive has a spindle device for rotating a magnetic diskette, a magnetic head device for reading data from the magnetic diskette, and a detecting position of a track written on the magnetic diskette. It consists of an index detection device for

FIG. 5 is a plan view showing the magnetic diskette. The diskette includes a jacket 14 that covers the disk,
It consists of an index detection hole 15, a spindle device hole 16, and a head access hole 17.

(Problems to be Solved by the Invention) In the conventional magnetic disk drive described above, the spindle is fixed due to the need to maintain high precision in data reading, and the diskette standards that can be supported are limited to one magnetic disk drive. However, there is only one type. Therefore, when it is desired to process diskettes of different standards, it is necessary to prepare as many magnetic disk drives as the number of different standards.

For this reason, there has been a drawback that the exclusive area occupied by these magnetic disk devices and the increase in cost are significant.

An object of the present invention is to eliminate the above-mentioned drawbacks and to avoid increasing the occupied area and cost by controlling the spindle as a movable structure so that it can be mounted on magnetic diskettes of various standards. The object of the present invention is to provide a magnetic disk device having the following configuration.

(Means for Solving the Problems) A magnetic disk drive according to the present invention includes a conical spindle, a spindle stand for mounting the spindle, a spindle moving rail and a spindle drive rail for making the spindle stand movable. , a spindle position control section for determining the position of the spindle, and a spindle position storage section for storing information necessary for moving the spindle, and configured in combination with a head read/write section and a head drive section. This is what I did.

(Example) Next, the present invention will be explained with reference to the drawings.

FIGS. 1(a) and 1(b) are a sectional view and a plan view, respectively, showing an embodiment of a magnetic disk device according to the present invention.

2 and 3 show the mounted state in which an 8-inch disk is inserted into the magnetic disk device shown in FIG. 1, and 5.2.
FIG. 3 is a plan view of the mounted state with a 5-inch disk inserted.

In Figures 1 to 3, l is a spindle table moving rail, 2 is a spindle table moving car, 3 is a spindle table, 4 is a spindle table driving rail, 5 is a spindle table driving car, 6 is a spindle, and 7 is a micro switch. , 8 is a spindle position storage unit, and 9.9-1 to 9-8 are head reading p
/Writing unit, lO is head driving unit, 11.11-1 to 1
1-8 is an index detection sensor, 12 is a diskette insertion hole, 13 is the right end of the diskette insertion hole, 14
15 is a jacket, 15 is an index detection hole, 16 is a spindle hole, 17 is a head access hole, and 18 is a spindle position control section.

1 to 3, a spindle table moving vehicle 2 and a spindle driving vehicle 5 are installed on a spindle table 3, and a spindle 6 is moved by a spindle table moving rail 1 and a spindle driving rail 4, respectively. The spindle 6 is located at a position where the center of the spindle stand 3 and the center of the spindle 6 coincide with each other, and has a conical spindle.

The spindle position control unit 18 determines the size of the diskette based on the information obtained from the microswitch 7, retrieves information about the diskette of the corresponding size from the spindle position storage unit 8, and transfers the information to the spindle carriage moving vehicle 2 and the spindle carriage driving vehicle. 5 and moves the spindle stand 3 to the memorized position. Further, data can be read from the diskette by a read/write section 9 of the head for reading data from the diskette, a head drive section 10, and an index detection sensor 11 for detecting the track position of the diskette. Realizes read/write functions such as writing data to diskettes.

The microswitch 7 is inserted into the right end 13 of the diskette insertion hole 12, detects the size of the diskette jacket 14, and sends the above information to the spindle position control section 18. The spindle position control section 18 takes out the position information of the corresponding diskette size from the spindle position storage section 8, and moves the spindle table moving vehicle 2 on the spindle table moving rail 1 based on the taken out information. The spindle moving rail l is laid so that the center of gravity of each type of diskette overlaps with the center of gravity of the spindle stand 30.

Referring to FIG. 1(b), the head read/write section 9
．． 9-1 to 9-3 may be provided with conventional head read/write units in parallel, or may be provided with a joint head read/write unit that satisfies each diskette standard. Index detection sensor 11.11-1 to 11-
The same applies to the installation of 8.

FIG. 4 is a sectional view showing how the diskettes are mounted in FIG. 1.

In FIG. 4, when the jacket 14 has been inserted and the spindle stand 3 has finished moving to the center of gravity of the jacket 14, the spindle position control unit 18 moves the spindle stand driving wheel 5, and the spindle 6 moves into the spindle hole 1 of the jacket 14.
6 is inserted. Since the spindle 6 is conical, it can fit into spindle holes of any size.

(Effects of the Invention) As explained above, the present invention eliminates the above-mentioned drawbacks by making the spindle a movable structure, and can read and write various types of diskettes into a single system without adding an additional magnetic disk device. This has the advantage that it can be easily realized using a magnetic disk device.

[Brief explanation of drawings]

FIGS. 1(a) and 1(b) are a sectional view and a plan view, respectively, showing an embodiment of a magnetic disk device according to the present invention. 2 and 8 show the mounted state in which an 8-inch disk is inserted into the magnetic disk device shown in FIG. 1, and 5.2.
FIG. 3 is a plan view of the mounted state with a 5-inch disk inserted. FIG. 4 is a sectional view showing how the diskettes are mounted in FIG. 1. FIG. 5 is a plan view showing the magnetic diskette. 1@...Spindle stand moving rail 2...Spindle stand moving vehicle 3-...Spindle stand 4#a#Spindle stand drive rail 5...Spindle stand drive car 6...Spindle 7-...Micro switch 8 . . . Spindle position storage unit 9.9-1 to 9-3. Diskette insertion hole 13...Diskette insertion hole right end 14...Jacket 15...Index detection hole 16...Spindle hole 17...Head access hole

Claims (1)

[Claims] a conical spindle, a spindle stand for mounting the spindle, a spindle movement rail and a spindle drive rail for movable the spindle stand, and a spindle position control unit for determining the position of the spindle; 1. A magnetic disk drive comprising: a spindle position storage section for storing information necessary for movement of the spindle, and configured in combination with a head reading/writing section and a head driving section.