JPH0773567A - Floppy disk device - Google Patents

Abstract

PURPOSE:To improve operability by providing housing recessed surfaces corresponding to plural floppy disks having different sizes and providing sensors. CONSTITUTION:FDs are housed in either of housing recessed surfaces 1 to 3 in accordance with sizes of FDs and sensors 5 to 7 detect in which of recessed surfaces FDs are housed. A rotary shaft 4 and magnetic heads 8i, 8j operate based on the detected signal. That is, the shaft 4 is moved in the up and down directions in accordance with the size of FDs to be engaged with the center of the rotation of the FD and also pressed to the FD to fix it. Further, heads 8i, 8j are insert-passed through an insert-passing groove 9 and detect a track by moving in the radial direction of the FD and performs the reading and writting of data by moving in the up and down directions. In such a way, one device can be used even for FDs having different sizes. Thus, since the device can be operated without confirming the size of FDs and moreover the misjudgement of the size of FDs does not occur, operability of the device is remarkably improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floppy disk device.

[0002]

2. Description of the Related Art In various information processing equipment such as personal computers and word processors, a recording / reproducing apparatus using a floppy disk device is widely used. The initial size of floppy disks was 8 inches, but recently the size has been reduced to 5.25 inches and 3.5 inches. Along with that, the floppy disk drive also changed from 8 inches to 5.25 inches and 3.5 inches. However, even if the size of the floppy disk has been reduced, only one type of floppy disk can be loaded into one slot. In other words, in the era when 8-inch floppy disks were used, there was only an 8-inch floppy disk device, and 5.
There is a dedicated floppy disk device for each of the 25 inch and 3.5 inch.

[0003]

As described above, since the conventional floppy disk device has the fixed slot portion, for example, if there is an 8-inch floppy disk device, a 3.5-inch or 5.25-inch floppy disk device is provided. I can't load the disc. Therefore, if many floppy disks are used at one time, there is a problem in operability such as an insertion error or a misunderstanding, resulting in a loss of time.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a floppy disk device having improved operability.

[0005]

DISCLOSURE OF THE INVENTION A floppy disk device according to the present invention is made to achieve the above-mentioned object, and a plurality of rectangular plate-shaped floppy disks having different sizes are provided for each size. A plurality of accommodating concave surfaces for accommodating, and a rotating shaft that is fitted to the rotation center of the floppy disk accommodated in these accommodating concave surfaces to transmit a rotational force,
A sensor for detecting a floppy disk provided on each of the accommodation concave surfaces, a magnetic head for reading and writing data from and to the floppy disk detected by the sensor, and a magnetic head inserted for reading and writing data An insertion groove formed in the accommodation concave surface.

The receiving concave surface is composed of a frame portion that abuts the peripheral edge of the floppy disk and a surface portion that abuts one surface of the floppy disk.

One of the accommodating concave surfaces is cut out, and the accommodating concave surface smaller than this surface is formed below the plane of this surface.

As a result, the accommodating concave surfaces are laminated in the order of their sizes with their surface portions facing in the same direction.

The accommodating concave surfaces may be laminated so that the centers of rotation of the floppy disks accommodated therein are coaxial.

Further, the accommodation concave surface is 3.5 inches, 5.
It may be provided for each of the 25-inch and 8-inch floppy disks.

[0011]

A floppy disk of a certain size is housed in a housing concave surface corresponding to that size. When the floppy disk is accommodated in the accommodation concave surface, the sensor detects which accommodation concave surface is accommodated. As a result, the size of the contained floppy disk is also determined. Then, based on the detection signal of this sensor, the rotation shaft is fitted to the rotation center of the floppy disk and the magnetic head is inserted into the insertion groove, so that data is read from and written to the floppy disk.

By stacking the accommodating concave surfaces so that the center of rotation of the floppy disk is coaxial, the rotary shaft is fitted to the center of rotation of the floppy disk only by the operation in the axial direction.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view showing an embodiment of a floppy disk device according to the present invention, and FIG.
-II is a vertical cross-sectional view. Hereinafter, description will be given with reference to these drawings.

The floppy disk device according to the present invention is
A plurality of accommodation concave surfaces 1, 2, 3 for accommodating a plurality of rectangular plate-shaped floppy disks (not shown) of different sizes and a floppy disk accommodated in the accommodation concave surfaces 1, 2, 3 Of the rotary shaft 4 which is fitted to the center of rotation of the disk for transmitting the rotational force, and the sensors 5, 6, 7 for detecting the floppy disk provided on the accommodation concave surfaces 1, 2, 3 respectively.
And a magnetic head 8 for reading / writing data from / to the floppy disk detected by the sensors 5, 6 and 7.
i, 8j, and magnetic heads 8i, 8j are inserted for reading and writing of data, and an insertion groove 9 formed in the accommodation concave surfaces 1, 2, 3 is provided.

The accommodating concave surfaces 1, 2, 3 are frame portions 1a, 1b, 1c, 1d, 2a abutting on the peripheral edge of the floppy disk.
... and the surface portion 1 that contacts one surface of this floppy disk
e, 2e, 3e.

The surface portion 3e of the accommodation concave surface 3 is cut out and the surface portion 3e is formed.
An accommodation concave surface 2 smaller than the surface portion 3e is formed below the plane of e, and the accommodation concave surface 1 smaller than the surface portion 2e is formed under the plane of the surface portion 2e by cutting out the surface portion 2e of the accommodation concave surface 2.

As a result, the accommodation concave surfaces 3, 2, 1 are laminated in the order of their sizes with the respective surface portions 3e, 2e, 1e facing in the same direction.

The accommodating concave surfaces 3, 2, 1 are laminated so that the rotation centers of the floppy disks accommodated therein are coaxial with each other. The rotary shaft 4 is attached to the surface portion 1e of the accommodation concave surface 1 on the shaft via a bearing 4k.

Further, the accommodation concave surfaces 1, 2 and 3 are respectively
It is provided for each 3.5 inch, 5.25 inch, and 8 inch floppy disk.

Next, the operation of the floppy disk device according to the present invention will be described.

The floppy disk is accommodated in any of the accommodation concave surfaces 1, 2 and 3 depending on its size. When the floppy disk is accommodated in any of the accommodating concave surfaces 1, 2 and 3, the sensor 5, 6, 7 will cause the accommodating concave surfaces 1, 2, 3
To detect whether it was accommodated in. That is, if only the sensor 5 detects the presence of the floppy disk, the floppy disk is accommodated in the accommodating concave surface 1, and similarly, if only the sensors 5 and 6 are the accommodating concave surface 2, the sensor 5 and the accommodating concave surface 2 are included. If all 6 and 7 are accommodated concave surface 3. Also,
As a result, the size of the contained floppy disk is also determined.

Then, the rotary shaft 4 and the magnetic heads 8i, 8j operate based on the detection signals of the sensors 5, 6, 7. That is, the rotating shaft 4 moves up and down according to the size of the floppy disk to fit the center of rotation of the floppy disk and press and fix the floppy disk. Then, the magnetic heads 8i and 8j are inserted into the insertion groove 9 to move in the radial direction of the floppy disk to detect a track and move up and down to read and write data.

[0023]

According to the floppy disk device of the present invention, the size of the floppy disk accommodated is provided by providing a plurality of accommodation concave surfaces corresponding to floppy disks of different sizes and providing a sensor on the accommodation concave surface. Since it is automatically detected, floppy disks of different sizes can be used with one floppy disk device. Therefore, the operation can be performed without checking the size of the floppy disk, and the size of the floppy disk is not mistaken, so that the operability can be significantly improved.

Further, by stacking the accommodating concave surfaces so that the rotation center of the accommodating floppy disk is coaxial, the movement of the rotating shaft can be limited only in the axial direction, so that the structure can be simplified.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view taken along line II-II in FIG.

[Explanation of symbols]

1, 2 and 3 accommodation concave surface 4 rotation axis 5, 6, 7 sensor 8i, 8j magnetic head 9 insertion groove 1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d, 3
a, 3b, 3c, 3d frame portion of the receiving concave surface 1e, 2e, 3e surface portion of the receiving concave surface

Claims (3)

[Claims] 1. A plurality of accommodation concave surfaces for accommodating a plurality of rectangular plate-shaped floppy disks of different sizes and a center of rotation of the floppy disks accommodated in the accommodation concave surfaces. A rotary shaft for transmitting a rotational force, a sensor for detecting a floppy disk provided on each of the accommodation concave surfaces, a magnetic head for reading and writing data from the floppy disk detected by this sensor, and this magnetic head An insertion groove formed in the accommodation concave surface and inserted for reading and writing data is provided, and the accommodation concave surface includes a frame portion that abuts a peripheral edge of the floppy disk and a surface portion that abuts one surface of the floppy disk. One of the concave portions of the housing is cut out so as to be below the plane of the surface portion, and the storage area smaller than the surface portion. By the concave is formed, a floppy disk drive in which the accommodating concave, which are stacked in order of their magnitude by a respective surface portion in the same direction. 2. The floppy disk device according to claim 1, wherein the accommodating concave surfaces are laminated such that the rotation centers of the respective floppy disks are coaxial. 3. The floppy disk device according to claim 1, wherein the accommodation concave surface is provided for each of the 3.5 inch, 5.25 inch, and 8 inch floppy disks.