JP3189891B2 - Floppy disk drive unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a floppy disk drive unit having a mechanism for preventing erroneous insertion of a floppy disk.

[0002]

2. Description of the Related Art FIG. 5 is a diagram showing a schematic structure of a conventional floppy drive unit.

[0003] Floppy disk drive unit 510
Is fixed to one end surface of the frame 513 in which the floppy disk 508 is inserted, the drive mechanism and the control board are accommodated in the floppy disk,
And a front panel 500 having an opening for inserting a floppy disk. The front panel 500 is provided with a shutter 501 urged in a closed state by a spring 504 around a shaft 507 as a rotation axis.

[0004] Floppy disk drive unit 510
Inserting the floppy disk 508 into the shutter 501
Is pressed by the floppy disk 508 to release the shutter 5.
01 is opened, and the floppy disk 508 is further pushed in to perform insertion.

[0005] The conventional floppy disk drive unit 5 incorporated in such a device as a personal computer or the like.
When inserting the floppy disk 508 into the insertion slot 10, there is a possibility that the user may insert the floppy disk 508 in the wrong insertion direction.

For this reason, in order to prevent erroneous insertion in the direction of insertion of the floppy disk, there is provided a floppy disk and a floppy disk drive unit provided with concave and convex portions which engage with each other when the floppy disk is inserted in a regular direction. It has been proposed (Japanese Utility Model Application Laid-Open No. 60-132659). Also,
A floppy disk drive unit provided with a pin for preventing erroneous insertion has also been proposed (Japanese Utility Model Application Laid-Open No. 61-158).
647). This erroneous insertion prevention mechanism allows the floppy disk to be inserted by inserting the pin into the groove formed in the shutter portion of the floppy disk when the floppy disk is inserted in the normal insertion direction, If the floppy disk is inserted in the wrong direction, the pins prevent the floppy disk from being inserted, so that the floppy disk cannot be inserted to the end.

[0007]

However, the conventional floppy disk drive unit 510 shown in FIG.
The shutter 501 regulates the insertion opening of the floppy disk 508 by the shutter 501, but the shutter 501 is restricted in opening and closing only by the urging of the spring 504. If an insertion force higher than the force is applied, the shutter 501 opens even if the shutter 501 is an object other than the floppy disk 508, and the shutter 501 can be inserted.

Further, after an object other than the floppy disk 508 is erroneously inserted, the shutter 501 is closed again by the urging force of the spring 504, and it becomes difficult to remove the object other than the erroneously inserted floppy disk 508. In other words, there is a possibility that a mechanism inside the floppy disk drive unit 510 may be broken due to an incorrectly inserted object other than the floppy disk 508. In addition, after the erroneous insertion, the shutter 5
01 is closed, it is not known that there is anything other than the incorrectly inserted floppy disk 508 in the floppy disk drive unit 510. When the floppy disk 508 is inserted, not only the mechanism in the floppy disk drive unit 510 but also the floppy disk Disk 50
8 could be damaged or the data stored on the floppy disk could be destroyed.

[0009] Also, the above-mentioned disclosed in Japanese Utility Model Application Laid-Open No. 60-132649 and Japanese Utility Model Application Laid-Open No. 61-158647 can prevent an incorrect insertion direction of a floppy disk. No countermeasures have been taken in the event of this. In other words, if the object is large enough to fit in the floppy disk insertion slot, the shutter of the floppy disk insertion slot can be easily opened even with an object other than the floppy disk, and can be easily inserted into the drive unit, and Once inserted, it was difficult to remove. In addition, there is a possibility that a mechanism other than the floppy disk may be erroneously inserted, thereby destroying the mechanism of the drive unit itself. For example, since the shutter at the insertion opening is easily opened by the insertion force when trying to insert an object, there is a possibility that things such as clips and coins may be inserted due to children's mischief, etc. If the floppy drive is inserted, both the floppy drive and the floppy disk may be destroyed, and the recorded data may be destroyed.

Accordingly, an object of the present invention is to provide a floppy disk drive unit which prevents erroneous insertion of an object other than a floppy disk.

[0011]

In order to achieve the above object, in a floppy disk drive unit of the present invention, a floppy disk having a cut surface for confirming an insertion direction is inserted into one of four corners of an outer case. In a floppy disk drive unit having a shutter provided in an opening, a detecting unit located in front of the shutter and located at a position where the cut surface abuts when a floppy disk is inserted, and movement in a direction in which the shutter opens. erroneous insertion prevention mechanism and blocking unit for blocking are integrated to have, movably provided so as to release the blocking by the blocking portion by being pushed sideways by the cut surface with the insertion of a floppy disk I have.

In the floppy disk drive unit of the present invention configured as described above, by inserting the floppy disk by bringing the cut surface of the floppy disk into contact with the detecting portion of the erroneous insertion preventing mechanism , the detecting portion is positioned on the cut surface. To slide. Then, the erroneous insertion prevention mechanism moves to the side, so that the blocking of the opening of the shutter by the blocking portion is released. On the other hand, if an attempt is made to insert an object that does not have a cut surface or that does not contact the detection unit, the detection unit does not move to the side, and as a result the blocking by the blocking unit is not released. Does not open.

The shutter has a floppy disk inserted therein.
It may be closed at all times without opening,
And a second surface extending perpendicular to the first surface.
Are formed integrally, and the movement of the second surface is blocked by the blocking portion.
May be used. Also, in this case,Incorrect insertion prevention mechanism
Has a detection unit formed at one end and a second detection unit formed at the other end.
Rotate the projection area of the surface and the area other than the projection area as the rotation area
LikeIncorrect insertion prevention mechanismHaving a support portion for supporting
The blocking part may be a detecting part formed on one end side.
And the support part formed on the other end side are integrally connected,
First, when the shutter is opened, the second surface of the shutter is thrown.
It may be arranged in a shadow area.

Further, the shutter may be a flat plate,
In this case, the erroneous insertion prevention mechanism may have a detection unit formed on one end side, a blocking unit formed on the other end side, and a connection unit that integrally connects the detection unit and the blocking unit. And
The erroneous insertion prevention mechanism may be arranged so that the shutter is sandwiched between the detection unit and the blocking unit when the shutter is closed.

[0015]

Next, embodiments of the present invention will be described with reference to the drawings. (First Embodiment) FIG. 1 is a perspective view illustrating the structure of an erroneous insertion preventing mechanism of a floppy disk drive unit according to a first embodiment of the present invention.

Floppy disk drive unit 110
The erroneous insertion prevention mechanism is a base unit 10 serving as a housing for each mechanism.
0, a detection pin 102 is formed at one end,
The arm 103 having the shaft 106 formed at the other end is connected to the shaft 10.
6, the front panel 113 has an opening in the front panel 113, a front surface 101a for closing the opening, and a front surface 1a.
A shutter 101 having an L-shaped cross section composed of an upper surface 101b extending perpendicularly to the shutter 101a is rotatably supported by a shaft 107 which is a rotation axis of the shutter 101. The shutter 101 is closed when a floppy disk is not inserted. It is configured to be urged by a spring 104 so as to be in a state of being closed. The arm 103 is arranged above the upper surface 101b of the shutter 101, and the detection pin 102 is arranged ahead of the front surface 101a. Also, this detection pin 102
Is inserted into the floppy disk drive unit 110 when the C-plane cut portion 108 of the floppy disk 108 is inserted.
a.

Next, the operation of the erroneous insertion prevention mechanism of the first embodiment will be described with reference to FIGS. 2 (a) and 2 (b).

FIGS. 2A to 2D are views for explaining the operation of the erroneous insertion prevention mechanism when the floppy disk 108 is inserted into the floppy disk drive unit 110 according to the present embodiment. A perspective view is shown, and a side perspective view is shown on the right. In each figure, a shutter 10 is shown.
1, only the arm 103 and the floppy disk 108 are shown.

FIG. 2A shows a state before the floppy disk 108 is inserted into the floppy disk drive unit 110. The floppy disk 108 is inserted in the direction of arrow C.

The detection pin 102 is a floppy disk 108
Is set at a position in contact with the C-plane cut portion 108a. The arm 103 is located on the upper surface 10 of the shutter 101.
1b, the shutter 101 rotates in the direction of arrow D due to interference between the arm 103 and the upper surface 101b, and cannot be opened.

FIG. 2B shows a state in which the C-plane cut portion 108a is in contact with the detection pin 102.

Since the detection pin 102 slides on the C-plane cut portion 108a along the C-plane cut portion 108a, the arm 103 rotates in the direction of arrow E against the urging force of the spring 105. However, in this state, since the arm 103 is still on the upper surface 101b of the shutter 101,
One cannot open.

FIG. 2C shows a situation where the floppy disk 108 is further pushed in the direction of arrow C.

The detection pin 102 further slides on the C-plane cut portion 108a.
01 deviates from the projection plane of the upper surface 101b, that is,
The arm 103 does not interfere with the upper surface 101b, and the shutter 101 can be opened.

FIG. 2D shows a state where the floppy disk 108 is inserted into the floppy disk drive unit 110 by pushing the shutter 101 open.

Since the shutter 101 can be opened in the state shown in FIG. 2C, the floppy disk 108 can push and open the shutter 101 in the direction of arrow D. It can be inserted into the drive unit 110.

Next, FIG. 3 shows a situation where a non-floppy disk 111 smaller than the floppy disk is about to be inserted from the shutter 101.

When a disk 111 other than the floppy disk is to be inserted, the disk 111 other than the floppy disk does not come into contact with the detection pin 102, so that the arm 10
3 remains on the upper surface 101b of the shutter 101, so that the shutter 101 and the arm 103 interfere with each other at the interference portion 112, and the shutter 101
Does not open.

Even if the detection pin 102 is in contact with the detection pin 102, unless the detection pin 102 is urged in the direction of E (FIG. 2B),
01 remains on the upper surface 101b, and the shutter 101 does not open.

Therefore, other than the floppy disk 11
1 is not erroneously inserted into the floppy disk drive unit 110.

As described above, according to the present embodiment, the detection pin 102 is pushed by the C-plane cut portion 108a of the floppy disk 108, and the arm 103 and the shutter 101 are pushed.
The floppy disk 108 can be inserted by eliminating interference with the upper surface 101b. For this reason, other than the floppy disk, a shape smaller than the floppy disk such that the detection pin 102 cannot be pushed
No. 11 cannot open the shutter 101. Therefore, erroneous insertion of something other than the floppy disk 111 can be prevented by an insertion operation that is no different from the conventional floppy drive.

Further, in the present embodiment, not only the erroneous insertion of the disk 111 other than the floppy disk but also the C-plane cut portion 108a is detected by the detection pin 202. It also has the function of preventing (Second Embodiment) Next, the operation of the erroneous insertion preventing mechanism according to a second embodiment of the present invention will be described with reference to FIGS.

FIGS. 4A and 4B are a perspective plan view and a perspective side view illustrating the operation of the erroneous insertion prevention mechanism when the floppy disk 208 is inserted into the floppy disk drive unit 210 of this embodiment. .

In the first embodiment, the cross section of the shutter 101 is L-shaped. On the other hand, the shutter 201 of this embodiment is formed of a flat plate having the same shape as the conventional shutter 501 shown in FIG. I have.

A U-shaped claw 203 comprising a connecting portion 209 for connecting the detecting portion 202 and the stopper 206 is provided for the arm 103 having the detecting pin 102 at one end in the first embodiment. ing. The claw 203 is positioned so as to sandwich the side end 211 of the shutter 201 between the detection unit 202 and the stopper 206 by being urged by a spring 205 attached to the frame 210, and slides in the direction of arrow F. It is possible.

FIG. 4A shows a state before the floppy disk 208 is inserted. In this state, the claw 203 is pushed toward the shutter 201 by being urged by the spring 205. As a result, even if the shutter 201 is pushed and opened, the shutter 201 does not open because the shutter 201 interferes with the stopper 206.

FIG. 4B shows that the floppy disk 208 is
A state in which the shutter 201 is pushed open to be inserted into the floppy disk drive unit 210 is shown.

When the detecting portion 202 of the claw 203 comes into contact with the C-plane cut portion 208a of the floppy disk 208 and slides on the C-plane cut portion 208a, the claw 203 is moved in the direction of arrow G. As a result, the shutter 201 and the stopper 206 do not interfere with each other, and the floppy disk 20
8 pushes the shutter 201 open and is inserted into the floppy disk drive unit 210.

In the case of the present embodiment, the detecting section 202 is moved by the C-plane cut section 208a of the floppy disk 208,
The shutter 201 can be opened by eliminating the interference between the stopper 206 and the shutter 201, but the shape and operation are different, but the basic concept is the same as that of the first embodiment. 111 can be prevented from being erroneously inserted.
It also has a function of preventing erroneous insertion of a non-positive direction.

[0040]

As described above, according to the present invention, by inserting the floppy disk by bringing the cut surface of the floppy disk into contact with the detecting portion of the erroneous insertion preventing mechanism , the detecting portion can move over the cut surface. Slide. Then, the erroneous insertion prevention mechanism moves to the side, and the blocking of the opening of the shutter by the blocking portion is released. This prevents erroneous insertion of a small disk other than the floppy disk that does not come into contact with the detector, or a disk other than the floppy disk that comes into contact with the detector, but does not allow the erroneous insertion prevention mechanism to move to the side. To prevent mistakes.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating the configuration of an erroneous insertion preventing mechanism of a floppy disk drive unit according to a first embodiment of the present invention.

FIG. 2 is a plan perspective view and a side perspective view for explaining the operation of the erroneous insertion prevention mechanism shown in FIG. 1;

FIG. 3 is a diagram showing a situation in which something other than a floppy disk is about to be inserted into a floppy disk drive unit.

FIG. 4 is a perspective plan view and a perspective side view illustrating the operation of a mechanism for preventing an erroneous insertion of a floppy disk drive unit according to a second embodiment of the present invention.

FIG. 5 is a perspective view illustrating the configuration of a conventional floppy disk drive unit.

[Explanation of symbols]

 Reference Signs List 100 base unit 101, 201, 501 shutter 101a front surface 101b top surface 102 detection pin 103 arm 104, 105, 205, 504 spring 106, 107, 507 axis 108, 208, 508 floppy disk 108a, 208a C-plane cut unit 110, 510 floppy Disk drive unit 111 Other than floppy disk 112 Interference part 113, 500 Front panel 201 Detecting part 203 Claw 206 Stopper 209 Connection part 210 Frame 211 Side end

Claims (8)

(57) [Claims] 1. A floppy disk drive unit having a shutter provided in an opening into which a floppy disk having a cut surface for confirming an insertion direction is formed at one of four corners of an outer case, wherein said shutter is provided in front of said shutter. An erroneous insertion prevention mechanism, in which a detection unit positioned at a position where the cut surface abuts when a floppy disk is inserted and a blocking unit for preventing movement of the shutter in the opening direction, are integrated with each other. A floppy disk drive unit, wherein the floppy disk drive unit is movably provided so as to be pushed laterally by the cut surface when the disk is inserted, so that the inhibition by the inhibition portion is released. 2. The floppy disk drive unit according to claim 1, wherein said shutter is always closed when said floppy disk is not inserted. 3. A first shutter for closing said opening.
And surface, the first of the second surface and is extending perpendicular to the plane formed integrally, floppy according to claim 1 or 2 movement of the second surface is prevented by the blocking portion Disk drive unit. 4. The erroneous insertion prevention mechanism has the detection unit formed on one end side, and rotates on the other end side with a projection area on the second surface and a rotation area other than the projection area as a rotation area. 4. The floppy disk drive unit according to claim 3, further comprising a support for supporting said erroneous insertion prevention mechanism . 5. The blocking section integrally connects the detecting section formed on the one end side and the support section formed on the other end side, and is provided when the shutter is opened. ,
5. The floppy disk drive unit according to claim 4, wherein said floppy disk drive unit is arranged in a projection area of said second surface of said shutter. 6. The floppy disk drive unit according to claim 1, wherein the shutter is a flat plate. Insertion preventing mechanism wherein said erroneous, the detecting portion is formed at one end side, wherein the blocking portion is formed at the other end,
7. The floppy disk drive unit according to claim 1, further comprising: a connection unit that integrally connects the detection unit and the blocking unit. 8. The device according to claim 1, wherein the erroneous insertion prevention mechanism is arranged so as to sandwich the shutter between the detection unit and the blocking unit when the shutter is closed. Floppy disk drive unit.