JPH06290526A - Floppy disk take-out inhibition mechanism - Google Patents

Abstract

PURPOSE:To prevent a floppy disk from flawing and to enhance the maintainability by locking a drive of a key for taking out the floppy disk only during read/write operation. CONSTITUTION:When the floppy disk is inserted into the device after a power source is turned on, a push-button 9 is pressed out to be in the same position as the outer surface of a case frame 1, and normally, the standby state is effective. When read/write of data on the floppy disk is performed by a disk head, an operation signal is outputted by a condition detecting circuit 17 to an electromagnetic drive circuit 19. A drive signal is outputted to an electromagnetic circuit 21 and a lamp display circuit 23 respectively by the circuit 19 with the operation signal. As a result, a lock arm 13 of an electromagnetic lock 11 is driven by the circuit 21 to lock the button 9, and hence an operation by an operator is prevented. Upon completion of read/write, the lock 11 is released, and the button 9 becomes operatable. Consequently, malfunction and flawing of the floppy disk can thus be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floppy disk take-out prohibition mechanism having a disk head for reading or writing data from or in a floppy disk and a take-out key for taking out a floppy disk by releasing the disk head. The present invention relates to a floppy disk take-out prohibition mechanism which prevents damage to a floppy disk by preventing malfunction during reading or writing of data to the floppy disk and improves maintainability of data.

[0002]

2. Description of the Related Art A conventional floppy disk device will be described with reference to the block diagram of FIG. When a floppy disk is inserted into the casing frame 25 that constitutes the entire apparatus, the disk head sets the floppy disk and reads or writes data by rotationally driving a spindle motor (not shown). Also, when a floppy disk is inserted into the housing frame 25, the lower guide 29
The upper guide 31 is attracted and locked, and the upper guide 31
Is attracted to the lower guide 29 and the disc head 27
Along with fixing the floppy disk. When the reading or writing of the data from the floppy disk is completed, the operator pushes the push button 33 provided on the upper portion of the casing frame 25 in the drawing toward the inside of the casing 25 to lower the guide 31 and the upper guide. 29 is pushed up. When the lower guide 31 and the upper guide 29 are pushed up, the disk head 27 separates from the floppy disk and the floppy disk is pushed out of the housing frame 25 by the force of a spring (not shown) to take out the floppy disk. Met.

[0003]

However, when the push button 33 is pressed while the disk head 27 is reading or writing data in the floppy disk, the floppy disk is pushed up by the lower guide 31 and the upper guide 33. Since it is released from the head 27, the surface of the magnetic material is damaged. When the surface of the magnetic material is damaged, the data stored in the floppy disk is destroyed, and there is a problem that the quality of the floppy disk deteriorates.

The present invention has been made in view of such conventional problems, and an object thereof is to prevent a malfunction of a floppy disk by preventing a malfunction during reading or writing of data to the floppy disk. At the same time, it is to provide a floppy disk ejection prohibition mechanism that improves the maintainability of data.

[0005]

To achieve the above object, the present invention provides a floppy disk having a disk head for reading or writing data to a floppy disk, and an eject key for releasing the floppy disk from the disk head. The gist of the present invention is that the mechanism for prohibiting the removal of the disk is provided with means for locking the drive of the removal key only while the disk head is reading or writing data to the floppy disk.

[0006]

With the above-described structure, the drive of the eject key for releasing the floppy disk by releasing it from the disk head is performed only while the disk head is reading or writing data to or from the floppy disk. The lock prevents the floppy disk from being damaged and improves the maintainability of data.

[0007]

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

FIG. 1 is a block diagram of an embodiment of a floppy disk ejection prohibiting mechanism of the present invention.

The casing frame 1 for accommodating the above-mentioned floppy disk is a frame constituting the entire floppy disk device. The disk head 3 provided on the housing frame 1 reads or writes data from the magnetic material on the surface of the floppy disk. The lower guide 5 provided inside the housing frame 1 attracts and locks an upper guide 7 to be described later when a floppy disk is inserted into the housing frame 1. Lower guide 5
Upper guide 7 provided inside the housing frame 1 of
Fixes the floppy disk together with the disk head 3 when the floppy disk is inserted into the housing frame 1. The push button 9 (eject key) connected to the lower guide 5 on the upper part of the housing frame 1 is pushed out to the outer surface of the housing frame 1 when the floppy disk is inserted into the housing frame 1, and the floppy disk is ejected. When the disk is removed from the housing frame 1, when the disk guide 3 is pressed into the housing frame 1, the lower guide 5 and the upper guide 7 cause the disk head 3 to release the floppy disk, and the floppy disk is pushed out of the housing frame 1. Be done. An electromagnetic lock 11 provided on the top of the casing frame 1 in contact with the push button 9 locks the push button 9 while the disk head 3 is reading / writing data from the floppy disk and prevents the floppy disk from being taken out. To do.

The push button 9 and the electromagnetic lock 1
Details of No. 1 will be described with reference to FIG. The electromagnetic lock 11 is
The lock arm 13 is locked by an electromagnet, and the lock arm 13 is driven upward in the drawing by passing a current through the exciting coil. The push button 9 is locked by driving the lock arm 13 to the upper part in the figure. On the other hand, when the current to the exciting coil is cut off, the electromagnetic lock 11 pulls the lock arm 13 and unlocks the push button 9.

The control of the electromagnetic lock 11 will be described with reference to FIG. Input / output (I / O) of floppy disk device
The controller 15 requests the condition detection circuit 17 to read or write data on the floppy disk. R / W REQ
Output signals and control signals. The condition detection circuit 17
When the reading or writing of data by the disk head 3 of the floppy disk is detected and the reading or writing of the data is being performed, the BU is input to the input / output (I / O) controller
Returns the SY signal. Further, the condition detection circuit 17 outputs an operation signal to the electromagnetic drive circuit 19 when data is being read or written. When the operation signal is input from the condition detection circuit 17, the electromagnetic drive circuit 19 outputs a drive signal to the electromagnetic circuit 21 and also outputs a drive signal to the lamp display circuit 23. Drive circuit outputs the electromagnetic circuit 21
Supplies a current to the exciting coil of the electromagnetic lock 11 to drive the lock arm 13 to lock the push button 9. Further, the lamp display circuit 23 displays a lamp to notify that the disk head 3 of the floppy disk is reading or writing data.

Next, the operation of this embodiment will be described.

First, when the floppy disk is inserted after the power is turned on to the apparatus, the push button 9 is pushed out to the same position as the outer surface of the housing frame 1, and normally enters the waiting state. When the disk head 3 reads or writes data from the floppy disk, the condition detection circuit 17 outputs an operation signal to the electromagnetic drive circuit 19. The electromagnetic drive circuit 19 outputs a drive signal to the electromagnetic circuit 21 according to the operation signal from the condition detection circuit 17 and also outputs a drive signal to the lamp display circuit 23. By outputting the drive signal, the electromagnetic circuit 21 supplies a current to the exciting coil of the electromagnetic lock 11 to drive the lock arm 13 to lock the push button 9. Further, the lamp display circuit 23 displays a lamp to notify that the disk head 3 of the floppy disk is reading or writing data. In this state, the push button 9 is locked to prevent the operator's operation.

When the reading or writing of data from the floppy disk is completed, the current to the exciting coil is cut off, the electromagnetic lock 11 is released, and the push button 9 becomes operable.

Thus, the push button is locked during reading or writing of data to the floppy disk to prevent damage to the floppy disk and improve maintainability of the data.

[0016]

As described above, according to the present invention, the drive of the eject key for releasing the floppy disk from the disk head is locked only while the disk head is reading or writing data to the floppy disk. By preventing a malfunction during the reading or writing of data to a floppy disk, damage to the floppy disk can be prevented and the maintainability of data can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram according to an embodiment of a floppy disk ejection prohibiting mechanism of the present invention.

FIG. 2 is a configuration diagram showing a main part of the present invention.

FIG. 3 is a block diagram showing control of the present invention.

FIG. 4 is a configuration diagram showing a conventional example.

[Explanation of symbols]

 1 Enclosure Frame 3 Disk Head 9 Push Button 11 Electromagnetic Lock 13 Lock Arm 17 Condition Detection Circuit 21 Electromagnetic Circuit

Claims (1)

[Claims] 1. A floppy disk take-out prohibiting mechanism comprising a disk head for reading or writing data on a floppy disk and a take-out key for taking out a floppy disk by releasing the disk head, wherein A floppy disk ejection prohibiting mechanism comprising means for locking the drive of the ejection key only during a data reading or writing operation.