JPH07262736A - Disk device - Google Patents

Abstract

PURPOSE:To prevent a cartridge for disk from being inserted while being upside down. CONSTITUTION:A shutter member 3 is movable in the upper rightward direction in the figure along the front edge part 1a of a main body of the case, and when it is moved in this direction, an opening part 5 of the case main body is opened. The figure shows the state in which the cartridge 1 for the disk is inserted to the disk device 100 upside down. In such a case, a lever 101 which is a shutter driving member is engaged with an engaging means 7 provided in the moving direction of the shutter member 3, and this state becomes to be an obstacle, so the cartridge 1 for the disk is made unable to be inserted furthermore. When the cartridge 1 for the disk is properly inserted, the cartridge 1 is in the state in which it is inserted upside down to the one shown in the figure, and the lever 101 is abutted on the front edge part 6 of the case, and when the cartridge 1 is further inserted, the lever 101 is driven to move the shutter member 3, then the opening part 5 is opened.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device for writing / reading information to / from a disk housed in a disk cartridge, and more particularly to a disk device erroneously Conversely, the present invention relates to a disk device capable of preventing a disk cartridge from being inserted. 2. Description of the Related Art In a disk cartridge for housing a disk therein, for example, a floppy disk having a diameter of 86 mm is an American standard: ANSI X3B11 / 86-
It is built in a disk cartridge standardized by 57 or the like. This disc cartridge has a shutter member whose front edge portion is substantially symmetrical with respect to the insertion direction when the disc cartridge is inserted into the disc device. The shutter member is pressed to one side by a spring or the like before the disk cartridge is inserted, and covers the opening to protect the floppy disk housed inside. The opening / closing operation of the shutter member is performed as follows. That is, the shutter member of the 86 mm floppy disk case slides in a direction perpendicular to the case insertion direction to open the opening provided in the case body of the disk cartridge at the time of its insertion and at the time of its ejection. close. On the other hand, the disk device is provided with, for example, a rotatable lever, and when the disk cartridge is inserted, the lever abuts against the end of the shutter member, and the disk cartridge is opened. As it is inserted, it pushes the lever, which causes the lever to rotate and slide the shutter member to open the opening in the disc cartridge. Therefore, when the disk cartridge is inserted by turning the disk cartridge upside down (hereinafter, such insertion is referred to as reverse insertion), the lever comes into contact with the end portion of the shutter member on the side opposite to the normal time, and at this time, the shutter member Since it is pressed to one side, it cannot slide,
As a result, the rotation operation of the lever is also stopped and the insertion of the disk cartridge can be prevented. As described above, in the disk cartridge in which the width of the shutter member is symmetrical with respect to the inserting direction, the shape of the shutter member itself can prevent the reverse insertion. On the other hand, for example, as shown in Document ISO / TC97 / SC23N129, a disk in which the width of the shutter member at the front edge of the case body is asymmetric is left and right. For cartridges,
In the case of reverse insertion, the structure of the shutter member cannot prevent this. This is because the end of the shutter member on the opposite side is located closer to the center of the case main body than the position of the end of the shutter member with which the lever of the disk device abuts when properly inserted, so the reverse insertion was performed. In this case, the disc cartridge will be inserted until the lever comes into contact with the end portion of the shutter member that is closer to the center side. Further, the above-mentioned Document ISO / TC97
In the disk cartridge described in / SC23N129, when properly inserted, the distance from the position where the lever first comes into contact with the shutter member to the full opening of the shutter member is after the lever comes into contact with the disk cartridge when the lever is inserted backward There is a problem that the reverse insertion cannot be prevented because the distance is equal to the distance to contact the shutter member near the center of the case body. It is an object of the present invention to provide a disc device which can surely prevent the disc cartridge from being inserted backward even if the shutter member is asymmetrical. In order to achieve the above object, the present invention relates to a disc cartridge to be inserted in a moving direction of a shutter member when opening an opening of a case body thereof. An engagement portion is provided, and when the disc cartridge is inserted upside down, a shutter drive member that drives the shutter member to open and close engages with the engagement portion. When the disc cartridge is properly inserted into the disc device, the shutter driving member normally moves the shutter member to open the opening of the case body. When it is inserted in the opposite direction, the shutter driving member engages with the engaging portion, and therefore the shutter driving member becomes an obstacle and the disk cartridge cannot be inserted any more. Thereby, reverse insertion can be reliably prevented. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a main part of an embodiment of a disk device according to the present invention and a disk cartridge inserted therein. Here, the disk cartridge is erroneously inserted into the disk device by turning it upside down, That is, it shows a state in which it is inserted backward. Further, FIG. 2 is an enlarged perspective view showing a portion b of FIG. In FIGS. 1 and 2, reference numeral 1 is a disk cartridge, 1a is a front edge of a case body of the disk cartridge 1, and 2 is information processing such as a magnetic disk or an optical disk housed in the disk cartridge 1. The disk 3 is a shutter member. As shown in the figure, the shutter member 3 has a shape in which the front edge portion is asymmetrical with respect to the insertion direction a. Reference numerals 4 and 5 denote openings provided in the case body of the disk cartridge 1 for inserting a motor rotating unit and an information processing head (not shown). Reference numeral 100 is a disk device of this embodiment, and 1
Reference numeral 01 is a lever for opening the shutter member 3, and 102 is a spring. Further, 6 is a lever 10 when the disc cartridge 1 is correctly inserted into the disc device 100.
Reference numeral 1 denotes a lever abutting position indicating a position where the lever 1 abuts, and reference numeral 7 denotes a concave stopper provided on the case body front edge 1a of the case 1 on the left and right side of the lever abutting position 6. With this structure, as shown in FIG. 1, even when the disc cartridge 1 is mistakenly inserted into the disc device 100, that is, even if the disc cartridge 1 is inserted backward, the lever 101 keeps the case body of the disc cartridge 1 in place. Since it engages with the concave stopper 7 provided on the front edge portion 1a of the disk, and this acts as an obstacle to the disk cartridge 1, further insertion of the disk cartridge 1 can be prevented. Next, the operation when the disc cartridge 1 of this embodiment is properly inserted will be described. 3 and 4 are explanatory views showing the operation when the disc cartridge 1 is correctly inserted into the disc device 100, and 8 is the disc cartridge 1
An opening for inserting an information processing head provided in the case body of the reference numeral 9 is an opening provided in the shutter member 3,
The same reference numerals are given to the portions corresponding to FIG. As shown in FIG. 3, when the disc cartridge 1 is inserted into the disc device 100 in the direction of arrow a,
The lever 101 moves laterally while contacting the front edge 1a of the case body of the disc cartridge 1. Therefore, the shutter member 3 is pushed in the d direction by the movement of the lever 101, and as shown in FIG. 4, the shutter member 3 slides until the opening 9 of the shutter member 3 is aligned with the opening 8 of the case body of the disk cartridge 1. . Next, the operation when the conventional disk cartridge is inserted backward will be described. FIG. 5 shows the above Document ISO / TS97.
FIG. 13 is an operation explanatory diagram showing a case where a disk cartridge 1 ′ described in / SC23N129 is inserted upside down. As shown in the figure, the conventional disc cartridge 1'has no stopper 7 as shown in FIG. Therefore, when the disc cartridge 1'is mistakenly inserted in the disc device 100 in the reverse direction, the lever 101 is c
Rotating in the direction of the disk cartridge 1 '
Since it moves laterally at the front edge 1'a of the case body, it does not hinder the movement of the disc cartridge 1'in the a direction. As a result, as shown by the broken line in FIG. 5, the disc cartridge 1'is inserted into the disc device 100 with its front and back reversed. As a result, the motor rotating unit and the information processing head in the disk device 100 may be damaged, or the disk in the disk cartridge 1'may be damaged. FIG. 6 shows a modification of the concave stopper 7 shown in FIGS. Here, in FIG.
Compared with those shown in (b) and (c), FIG.
In the cases shown in (e) and (f), a stopper 7 is provided near the center of the disk cartridge 1. However, the stopper 7 is not limited to the shapes shown in the drawings, and the lever 1 of the disk device 100
It suffices if the 01 movement can be blocked. In the present invention, D
Although the description has been given by taking the disk cartridge 1 and the shutter member 3 described in the ISO ISO / TC97 / SC23N129 as an example, the shape thereof and the shape of the disk device 100 are not limited to these. Next, another example of the disk cartridge used in the present invention will be described with reference to FIGS. 7 and 8. In the ordinary disc cartridge 1, the shutter member 3 must be closed when it is taken out from the disc device 100.
Therefore, the torsion coil spring 10 as shown is often used. Further, the case body of the disk cartridge 1 is not integrally molded, and is often composed of a combination of two members. FIG. 7 (a) is shown in FIG.
FIG. 7B is a view seen from above, and FIG. 7C is a cross-sectional view taken along the section line ee of FIG. 7B. In the figure, the torsion coil spring 10 is
It is arranged between the side edge of the case body of the disc cartridge 1 and the shutter member 3, and is attached so as to close the shutter member 3. The case body of the disk cartridge 1 is composed of members 1b and 1c. Normally, to attach the torsion coil spring 10,
First, one end is attached to the shutter member 3, and then the other end is pushed into the case body of the disc cartridge 1. Therefore, similarly to the above-described embodiment of the present invention, the stopper 7 is provided on the members 1b and 1c, but at this time, as shown in the figure, the spring 10 is provided with a deeper recess 11 on the member 1b side. The workability of pushing into No. 1 case body is improved. That is, as shown in FIG. 7 (c), the stopper 7 and the recess 11 have different depths from L1 and L2. Therefore, while pressing the spring 10 toward the member 1c side, This is because it can be pushed into the case body. FIG. 8 shows a modification of FIG. 7 and is shown in FIG.
8B is a top view of FIG. 8B, and FIGS. 8C and 8D are cross-sectional views taken along the dividing line ee and ff in FIG. 8B, respectively. is there. In this embodiment, the configuration of FIG. 6 (d) is combined with FIG. 7, and the stopper 7 is moved closer to the center of the disk cartridge 1. Further, the recess 11 used to push the torsion coil spring 10 into the case body of the disc cartridge 1 has a stopper 7 on the member 1b.
It is provided at the same depth as. As shown in FIG. 8D, there is no recess at all on the member 1c side facing the recess 11. The effect of this disk cartridge is the same as that of the disk cartridge shown in FIG. Further, in this case, the depth of the concave portion 11 is determined by the stopper 7
It doesn't matter if it is shallower. As described above, according to the disk device of the present invention, even in the case of a disk cartridge having a shutter member whose front edge portion in the insertion direction is asymmetrical in the case of being inserted reversely, Since the shutter drive member can be engaged with the engagement portion provided on the case body, the shutter drive member becomes an obstacle to prevent the disk cartridge from being inserted further, and the reverse insertion is prevented. It can be surely prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a main part of an embodiment of a disk device according to the present invention. 2 is an enlarged perspective view showing a portion b of the disc cartridge in FIG. 1. FIG. FIG. 3 is a diagram for explaining the operation until the lever comes into contact when the disc cartridge of the embodiment shown in FIG. 1 is correctly inserted. FIG. 4 is a diagram for explaining the opening operation of the shutter member by the lever when the disc cartridge of the embodiment shown in FIG. 1 is correctly inserted. FIG. 5 is a diagram for explaining the operation when the conventional disk cartridge of the embodiment shown in FIG. 1 is inserted by reverse insertion. FIG. 6 is a view showing a main part of another example of the disk cartridge used in the embodiment shown in FIG. FIG. 7 is a diagram showing a main part of still another example of the disk cartridge used in the embodiment shown in FIG. FIG. 8 is a view showing a main part of still another embodiment of the disk cartridge used in the embodiment shown in FIG. [Explanation of reference numerals] 1 disc cartridge 2 disc 3 shutter member 7 stopper 100 disc device 101 lever

Claims (1)

[Claims] 1. In a disc device into which a disc cartridge having an engaging portion provided in a moving direction of a shutter member that opens an opening of a case body is inserted, when the disc cartridge is inserted in a correct first posture, a shutter drive member Drives the shutter member in the direction in which the opening opens, and when the disc cartridge is inserted in a second posture that is the reverse of the first posture, the shutter member driving means causes the engagement portion to move. And a disk device for preventing further insertion of the disk cartridge.