JP2802269B2 - Disk unit - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive for writing and reading information on and from a disk housed in a disk cartridge. The present invention relates to a disk device capable of preventing insertion of a 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.
7 and 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 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. The lever is pushed, thereby rotating the lever, sliding the shutter member and opening the opening of the disk cartridge. 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,
When the lever is correctly inserted, the distance from the position where the lever first contacts the shutter member to the fully opened position of the shutter member is equal to the distance between the position where the lever contacts the disk cartridge when the lever is reversely inserted and the position of the shutter member closer to the center of the case body There is a problem that it is equal to the distance to contact and cannot prevent reverse insertion. SUMMARY OF THE INVENTION It is an object of the present invention to provide a disk drive capable of reliably preventing a disk cartridge from being reversely inserted even when a shutter member is asymmetrical. [0010] In order to achieve the above object, the present invention provides a disk cartridge, comprising: a case main body having an opening in which a disk on which information is recorded or reproduced is stored; A shutter member capable of receiving an external force for opening the portion and movable along one edge of the case main body, and having a shutter member capable of opening and closing the opening; In the above, when the shutter member closes the opening, the force receiving portion is located at one end side in a direction along the one edge, and at the other end side. A case in which the case body is penetrated in the thickness direction and is provided with an exposed engaging portion, and is capable of engaging with the engaging portion, and Determine right or wrong A determination unit; When the disk cartridge is correctly inserted into the disk device, an external force is applied to the force receiving portion of the shutter member by the shutter driving member, and the shutter member normally moves along the edge. When the opening of the case body is opened, but the disk cartridge is inserted by mistake, the shutter driving member engages with the engaging portion, and thus the shutter driving member is As a result, the disk cartridge cannot be inserted any more. As described above, whether the insertion posture of the disk cartridge is correct or not is determined based on whether or not the shutter driving member is engaged with the engagement portion of the disk cartridge, whereby the reverse insertion of the disk cartridge can be reliably prevented. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a main part of a disk device according to an embodiment of the present invention and a disk cartridge inserted therein. Here, the disk cartridge is erroneously inserted into the disk device upside down, that is, This shows a state in which the paper is reversed. FIG. 2 is an enlarged perspective view showing a portion b in FIG. In FIGS. 1 and 2, 1 is a disk cartridge, 1a is a front edge of a case body of the disk cartridge 1, 2 is a disk for information processing such as a magnetic disk or an optical disk housed in the disk cartridge 1, 3 is a shutter member. This shutter member 3
As shown in the figure, the front edge has a shape that 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.
Reference numeral 100 denotes a disk device of this embodiment, 101 denotes a lever for opening the shutter member 3, and 102 denotes a spring. 3a is a force receiving portion of the shutter member 3 which receives an opening force by the lever 101, and 6 is a disk cartridge 1
A lever contact position indicating a position where the lever 101 contacts when the disc is properly inserted into the disk device 100, and a lever contact position 7 is provided on the case body front edge 1a of the case 1 on the right and left opposite sides to the lever contact position 6. This is a concave stopper. 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. FIGS. 3 and 4 show the disk cartridge 1.
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 in reverse will be described. FIG. 5 shows the Document ISO / TS97.
FIG. 40 is an operation explanatory diagram showing a case where a disk cartridge 1 ′ described in / 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 at the front edge 1'a of the case body of the disk cartridge 1'. It 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 rotating section 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. However, the stopper 7 is not limited to these shapes as shown in the figure, and only needs to be able to prevent the movement of the lever 101 of the disk device 100 when the disk cartridge 1 is reversely inserted. In the present invention, Document
The disk cartridge 1 and the shutter member 3 described in ISO / TC97 / SC23N129 have been described as examples, but the shape of the disk cartridge 100 and the shape of the disk device 100 are not limited thereto. Next, another example of the disk cartridge used in the present invention will be described with reference to FIGS. In the ordinary disk cartridge 1, when the disk cartridge 100 is removed from the disk device 100, the shutter member 3 must be closed.
For this purpose, 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.
FIG. 7 (b) is a view from above, and FIG. 7 (c) is a cross-sectional view taken along the line ee in FIG. 7 (b). In FIG. 1, the torsion coil spring 10 is
The shutter member 3 is disposed between the side edge of the case main body of the disk cartridge 1 and the shutter member 3 and is mounted so as to close the shutter member 3. The case body of the disc cartridge 1 is composed of members 1b and 1c. Usually, 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 main body of the disk cartridge 1. Therefore, similarly to the above-described embodiment of the present invention, the stopper 7 is provided on the members 1b and 1c. At this time, as shown in FIG. The workability of pushing into the case body is improved. That is, as shown in FIG. 7C, since the depth of the stopper 7 and the recess 11 is different from L1 and L2, the case of the disc cartridge 1 is pressed while the spring 10 is pressed against the member 1c. This is because it can be pushed into the 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 shown in FIG. 6D is combined with FIG. 7, and the stopper 7 is moved to the center 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 at the same depth as the stopper 7 in the member 1b. As shown in FIG. 8D, there is no concave portion on the member 1c side facing the concave portion 11. The effect of this disk cartridge is the same as that of the disk cartridge 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. And reverse insertion can be reliably prevented.

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

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 17/04 G11B 23/03

Claims (1)

(57) [Claims] In a disk device that records information on a disk stored in a disk cartridge or reproduces information from the disk, the disk cartridge stores the disk, a case body having an opening, and opening the opening. And a shutter member capable of receiving an external force for moving along one edge of the case main body and capable of opening and closing the opening.
In the one edge, when the shutter member closes the opening, the force receiving portion is located at one end side in a direction along the one edge, and On the end side, a case that is formed in a shape penetrating in the thickness direction of the case main body and provided with an exposed engaging portion is used. A disc device comprising a discriminating means for discriminating whether a cartridge is inserted correctly or not.