JPH09167467A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of inserting a disk cartridge upside down into a disk device. SOLUTION: A shutter member 3 is moveable to the up-right direction as shown on the surface of the diagram along a case front edge section 1a. If the member 3 moves in the direction, a case opening section 5 is opened. If a disk cartridge 1 is inserted into a disk device 100 in an upside down manner, a lever 101 is engaged to a recessed part 7 which is provided in the moving direction on the member 3 and the part 7 becomes an obstacle and the cartridge 1 is prevented being inserted into the device 100 any more. In order to correctly insert the cartridge into the device 100, the cartridge is reversed from the condition shown in the diagram, the lever 101 contacts a force receiving section 3a of the member 3 located at a lever contacting position 6, the cartridge is further inserted, the lever 101 is driven, the member 3 is moved and the section 5 is opened.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge for accommodating a disk in a case body, and in particular, when inserting the disk into a disk device, the disk cartridge is turned upside down by mistake. The present invention relates to a structure of a disk cartridge capable of preventing insertion of the disk cartridge. 2. Description of the Related Art In a disk cartridge for accommodating a disk therein, for example, a floppy disk having a diameter of 86 mm is a US standard: ANSI X3B11 / 86-5.
It is built into the case body standardized by 7 or the like. This disk cartridge has a shutter member whose front edge is substantially symmetrical with respect to the insertion direction when the disk cartridge is inserted into the disk device. Before the disk cartridge is inserted, the shutter member is pressed to one side by a spring member or the like, and covers the opening to protect the floppy disk housed therein. The opening and closing operation of the shutter member is performed as follows. That is, the shutter member of the 86 mm floppy disk cartridge slides in a direction perpendicular to the case insertion direction, and opens the opening provided in the case body of the disk cartridge when the disk cartridge is inserted and closes the opening when the disk cartridge is ejected. On the other hand, the disk device is provided with, for example, a rotatable lever. When the disk cartridge is inserted, the lever comes into contact with the end of the shutter member, and the disk cartridge is inserted. Pushes the lever as it moves, thereby rotating the lever, sliding the shutter member, and opening the opening of the case body.
Therefore, when the disc cartridge is inserted upside down by mistake (hereinafter, such insertion is referred to as “reverse insertion”), the lever comes into contact with the end of the shutter member on the right and left side opposite to the normal state, and at this time, the shutter member Since it is pressed against one side, the sliding operation cannot be performed, whereby the rotation operation of the lever is also stopped, and the insertion of the disk cartridge can be prevented. As described above, in a disk cartridge in which the width of the shutter member is symmetrical with respect to the insertion direction, the configuration of the shutter member itself can prevent reverse insertion. [0007] On the other hand, a disk in which the width of a shutter member at the front edge of a case body is asymmetrical as shown in Document ISO / TC97 / SC23N129, for example. In the case of a cartridge, when it is inserted backward, this cannot be prevented by the structure of the shutter member. This is because, when inserted normally, the end of the shutter member on the opposite side is located closer to the center of the case main body than the end of the shutter member with which the lever of the disk device comes into contact, so that the shutter member is inserted upside down. In this case, the disc cartridge is inserted until the lever comes into contact with the end of the shutter member that is shifted toward the center. Further, the above Document ISO / TC97
/ SC23N129 disc cartridge,
If the lever is inserted correctly, the distance from the position where the lever first contacts the shutter member to the fully opened position of the shutter member will be the center of the front edge of the case body after the lever comes into contact with the disc cartridge when reversely inserted. There is a problem that it is equal to the distance until the shutter member comes into contact with the approached shutter member and reverse insertion cannot be prevented. SUMMARY OF THE INVENTION It is an object of the present invention to provide a disk cartridge capable of reliably preventing reverse insertion even when the shutter member is asymmetrical. To achieve the above object, a disk cartridge according to the present invention has the following configuration. That is, a disc on which information is recorded or reproduced, a substantially rectangular flat plate-shaped body, the disc body rotatably housed, and a case body having an opening in a part thereof; A shutter member having a force receiving portion that is mounted on the device and that can open and close the opening and that can receive an external force for opening the opening, wherein the case body Comprises a first edge, second and third edges substantially perpendicular to the first edge, and opposite the first edge to the first edge. An opening position for moving the shutter member along the first edge in the direction of the second edge to open the opening; 3. Moveable between the closed position to move toward the edge of 3 and close the opening , The force receiving portion is at the first edge, is movable along the first edge, and is located on the second edge side of the first edge of the case body. Is provided with a concave portion which is formed in the thickness direction of the case main body and is exposed when the shutter member is at the closed position, and wherein the second portion is formed in a direction along the first edge portion. The distance from the edge of the concave portion to the end of the concave portion in the direction of the third edge is equal to or more than the distance from the third edge to the force receiving portion when the shutter member is in the closed position. The case body is disposed in a corner region surrounded by the first edge portion, the second edge portion, and the outer peripheral portion of the disk, one end of which is engaged with the shutter member, and the other end of the case body has the aforementioned edge. The shutter member is engaged with an engagement portion provided near the concave portion, and the shutter member is moved to the closed position. A torsion coil spring for urging in a direction, a side opening is provided on the second edge side of a side surface at the first edge of the case body, and the side opening is formed in the concave shape. And the engaging portion and the engaging portion. With this configuration, when the disk cartridge is correctly inserted into the disk device, the shutter driving member comes into contact with the force receiving portion, so that the disk cartridge is further inserted and the shutter driving member presses the shutter member. Therefore, the shutter member normally moves, and the opening of the case body is opened. On the other hand, if the disc cartridge is inserted reversely by mistake, the shutter driving member is engaged with the engaging portion, and the disc cartridge cannot be inserted any more. Thereby, reverse insertion can be reliably prevented. When the torsion coil spring is mounted in the case body, one end of the torsion coil spring is inserted from the side opening of the first edge to engage with the shutter member, and the other end is connected to the shutter member.
Similarly, it is inserted into the case body and engaged with the engaging portion provided near the concave portion. In this case,
Since the concave portion is provided in the side opening, the other end of the torsion coil spring can be pushed into the vicinity of the engaging portion, and the other end can be easily attached, and the torsion coil spring can be attached. Workability is improved. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of a disk cartridge according to the present invention and a part of a disk device. Here, a state where a disk cartridge is erroneously inserted into a disk device upside down, that is, a state in which the disk cartridge is reversely inserted, is shown. It is shown. FIG. 2 is an enlarged perspective view showing a portion b in FIG. 1 and 2, reference numeral 1 denotes a disk cartridge, 1a denotes a front edge of a case body of the disk cartridge 1, and 2 denotes a disk for information processing such as a magnetic disk or an optical disk housed in the disk cartridge 1. Reference numeral 3 denotes a shutter member. As shown, the shutter member 3 has a shape whose front edge is asymmetrical in the left-right direction with respect to the insertion direction a. Reference numerals 4 and 5 denote openings provided in the case main body of the disk cartridge 1 for inserting a motor rotating unit (not shown) and an information processing head. 100 is a disk device, 101 is a lever for opening the shutter member 3, and 102 is a spring. 6 is
When the disc cartridge 1 is correctly inserted into the disc device 100, a lever contact position indicating a position where the lever 101 contacts, 3a is a force receiving portion of a shutter member which receives an opening force by the lever 101, and 7 is a lever contact position. Reference numeral 6 denotes a concave stopper provided on the front edge 1a of the case body of the disk cartridge 1 on the right and left opposite sides. With this configuration, as shown in FIG. 1, the disk cartridge 1 is
00, the lever 101 engages with the concave stopper 7 provided on the front edge 1a of the case body of the disc cartridge 1 even if the disc cartridge 1 is reversely inserted. Because of this, further insertion of the disc cartridge 1 can be prevented. Next, the operation when the disk cartridge 1 of this embodiment is correctly inserted will be described. FIG. 3 and FIG.
FIG. 9 is an explanatory view showing an operation for correctly inserting the disk drive 100 into the disk drive 100, wherein 8 is an opening for inserting an information processing head provided in the case body of the disk cartridge 1, and 9 is provided on the shutter member 3. The same reference numerals are given to portions corresponding to FIG. As shown in FIG. 3, when the disk cartridge 1 is inserted into the disk device 100 in the direction of arrow a, the lever 101 moves sideways while contacting the front edge 1a of the case body of the disk cartridge 1. Accordingly, the movement of the lever 101 causes the shutter member 3 to receive its force receiving portion 3a.
Then, as shown in FIG. 4, the disk cartridge 1 slides until the opening 9 of the shutter member 3 coincides with the opening 8 of the case body of the disk cartridge 1. Next, the operation when the conventional disk cartridge is inserted reversely will be described. FIG. 5 shows the above Document ISO / TS9.
7 is an operation explanatory diagram showing a case where a disk cartridge 1 ′ described in 7 / SC23N129 is inserted upside down. As shown in FIG. 1, the conventional disk cartridge 1 'does not have the stopper 7 as shown in FIG. Therefore, when the disk cartridge 1 'is erroneously inserted into the disk device 100, the lever 101 rotates in the direction c and moves laterally on the front edge 1'a of the case body of the disk cartridge 1'. This does not hinder the movement of the disk cartridge 1 'in the direction a. As a result, as shown by the broken line in FIG. 5, the disk cartridge 1 ′ is inserted into the disk device 100 while being turned upside down. As a result, the disk device 1
00, the motor rotation unit and the information processing head 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, FIG.
6D and FIG. 6D.
(E) and (f) show the disc cartridge 1
A stopper 7 is provided near the center of the front edge of the case body. However, the present invention is not limited to the shapes shown in the drawings, and it suffices if the lever 101 of the disk device 100 can be prevented from moving when it is reversely inserted. In the present invention, Document ISO / TC97 / SC23N12
9. Disc cartridge 1 and shutter member 3 according to item 9.
However, these shapes and the shape of the disk device 100 are not limited thereto. Next, another embodiment of the disk cartridge according to the present invention will be described with reference to FIGS. In a normal disk cartridge 1, the shutter member 3 must be closed when the disk cartridge 100 is removed from the disk device 100.
For this reason, a torsion coil spring 10 as shown is often used. In addition, the case body of the disc cartridge 1 is also not integrally formed, but is often composed of a combination of two members. FIG. 7A shows FIG. 7B.
FIG. 7 (c) is a view taken from above, and FIG.
It is sectional drawing which follows -e. In FIG. 1, the torsion coil spring 10 comprises
In the corner portion 14 which is a region surrounded by the front edge portion 1a, the side edge portion 1d, and the disk (not shown) in the case main body of the disk cartridge 1, between the side edge portion 1d and the shutter member 3. The shutter member 3 is disposed so as to close the shutter member 3. Also, the disc cartridge 1
Is composed of members 1b and 1c.
Normally, to attach the torsion coil spring 10 to the case body, one end 10a of the torsion coil spring 10 is inserted into the case body from a side opening 13 provided on a side surface of the front edge 1a of the case body on the side edge 1d side. Is inserted into the engaging portion 3a of the shutter member 3, and similarly, the other end 10b is inserted and pushed into the case main body of the disc cartridge 1, and is provided near the stopper 7 at the corner of the corner portion 14. The engaging portion 15 is engaged. Therefore, the stopper 7 is provided on the members 1b and 1c in the same manner as in the above-described embodiment of the present invention. At this time, as shown in FIG.
0 can be easily pushed into the engagement portion 15 and the torsion coil spring 10 is
The workability of pushing into the case body is improved. That is, as shown in FIG. 7 (c), since there is a difference in depth between L1 and L2 in the stopper 7 and the recess 11, the disc cartridge 1 is pressed while the torsion coil spring 10 is pressed against the member 1c. This is because it can be pushed into the case body. FIG. 8 is a modification of FIG. 7, and FIG.
8B is a view of FIG. 8B as viewed from above, and FIGS. 8C and 8D are cross-sectional views taken along line ee and ff in FIG. 8B, respectively. is there. In this embodiment, the configuration of FIG. 7 is combined with the configuration of FIG. 6D, and the stopper 7 is moved toward the center of the front edge 1a of the disk cartridge 1. The recess 11 used to push the torsion coil spring 10 into the case body of the disk cartridge 1 is provided with a member 1b.
At the same depth as the stopper 7. FIG. 8 (d)
As shown in the figure, there is no concave portion on the member 1c side facing the concave portion 11. The effect of this embodiment is the same as that of the embodiment shown in FIG. Further, in this case, even if the depth of the concave portion 11 is smaller than the depth of the stopper 7, there is no problem. As described above, according to the present invention,
When the disk cartridge is inserted reversely, the shutter driving member can be engaged with the engaging portion provided on the case main body. Will be
Reverse insertion can be reliably prevented, and workability of attaching the torsion coil spring to the case body to bias the shutter member toward the shutter closed position is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing one embodiment of a disk cartridge according to the present invention and a part of a disk device. FIG. 2 is an enlarged perspective view showing a portion b of the disk cartridge in FIG. FIG. 3 is a diagram for explaining an operation until a lever comes into contact when the embodiment shown in FIG. 1 is correctly inserted into a disk device. 4 is a view for explaining an opening operation of a shutter member by a lever when the embodiment shown in FIG. 1 is correctly inserted into a disk device. FIG. 5 is a diagram for explaining the operation of the disk device when a conventional disk cartridge is inserted in reverse. FIG. 6 is a diagram showing a main part of another embodiment of the disk cartridge according to the present invention. FIG. 7 is a diagram showing a main part of still another embodiment of the disk cartridge according to the present invention. FIG. 8 is a view showing a main part of still another embodiment of the disk cartridge according to the present invention. [Description of Signs] 1 Disk cartridge 2 Disk 3 Shutter member 3a Force receiving portion 7 Stopper 100 Disk device 101 Lever

Claims (1)

[Claims] 1. A disk on which information is recorded or reproduced, a case body formed in a substantially rectangular flat plate shape, the disk being rotatably housed, and having an opening in a part thereof; The opening can be opened and closed,
A disk cartridge comprising: a shutter member having a force receiving portion capable of receiving an external force for opening the opening; wherein the case main body has a first edge portion; A second edge and a third edge substantially perpendicular to the first edge, and a fourth edge opposite to the first edge and parallel to the first edge; The shutter member moves along the first edge in the direction of the second edge to open the opening, and the shutter moves in the direction of the third edge to open the opening. The force receiving portion is located at the first edge portion and is movable along the first edge portion, and the first portion of the case main body is movable at the first edge portion. The second edge portion side of the edge portion is penetrated in the thickness direction of the case body, and the shutter member is in the closed position. A concave portion exposed at a certain time is provided, and in a direction along the first edge portion, a distance from the second edge portion to an end of the concave portion in the third edge direction is: The distance from the third edge to the force receiving portion when the shutter member is in the closed position is greater than or equal to the distance, and the first edge, the second edge, and the outer periphery of the disk of the case body Is arranged in a corner area surrounded by a portion, one end of which is engaged with the shutter member,
The other end is engaged with an engaging portion provided near the concave portion,
A torsion coil spring for urging the shutter member in the direction of the closed position, wherein a side opening is provided on a side of the first edge of the case body on the second edge side; A disc cartridge characterized in that a side opening is communicated with the concave portion and the engaging portion. 2. 2. The disk cartridge according to claim 1, wherein said case main body has a first shape divided in a thickness direction thereof.
And a second case member, wherein the concave portions are formed on both the first case member and the second case member, respectively. 3. 3. The disk cartridge according to claim 2, wherein the concave portion is directed from the first edge to the fourth edge in the first case member and the second case member. A disk cartridge characterized by being formed so as to have different depths from each other. 4. The disk cartridge according to any one of claims 1 to 3, wherein the disk is an optical disk.