JP3324575B2 - Disk cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a disk cartridge enclosing an optical disc, a disc-shaped recording medium such as a magneto-optical disk.

[0002]

2. Description of the Related Art Conventionally, disks such as optical disks have been used as disk-shaped recording media.

[0003] These discs are often used by being enclosed in a disc cartridge in order to prevent a recording or reproduction error from being caused by the adhesion of hand oils or the like to the recording surface.

By the way, as long as the recording density of the disk-shaped recording medium is the same, the larger the diameter of the disk, the larger the recording capacity. On the other hand, when the above-mentioned disc-shaped recording medium is used as a recording medium for a portable recording / reproducing apparatus, for example, a video camera, a small disc is more excellent in portability. For this reason, the discs of the portable device and the discs of the stationary device may have different sizes. At this time, a small disk cartridge is used for the portable disk. In the case where the recording method is the same and only the shape of the disc is different, if the disc can be mounted on the recording / reproducing apparatus, it becomes possible to record or reproduce by the recording / reproducing means provided in the recording / reproducing apparatus. For this reason, it is possible to take out only a disk from a small disk cartridge and replace it with a disk cartridge with the same outer shape as the disk cartridge of the stationary device, so that the disk used for portable use can be recorded and reproduced by the stationary recording and reproducing device. become.

In an optical disk, the recording operation is sensitive to dirt, but the reproducing operation is relatively resistant to dirt. When performing only reproduction without re-recording on a recorded disk, the disk is taken out of the disk cartridge and the disk alone is removed. There are also systems that have been allowed to handle this.

For these reasons, there is a demand to insert and remove a disk from a disk cartridge. As a structure to take out the disk from the disk cartridge,
For example, as disclosed in Japanese Patent Application Laid-Open No. 5-242626, there is a method of disposing a disk insertable / removable portion in a part of a disk cartridge.

A structure for taking out a disk from a conventional disk cartridge will be described with reference to FIG. A disk insertion / removal opening 12 is provided on a surface opposite to the surface on which the shutter 3 is disposed, and a disk insertion / removal opening / closing member 10e is disposed therein. Normally, the disk insertion / removal opening / closing member 10e is
Fits into the locking hole 7e arranged in the disk cartridge, and the disk insertion / removal opening 12 is closed. When removing the disk 4, the locking claw 6e is removed from the locking hole 7e, and the disk insertion / removal opening / closing member 10e is rotated around the rotation fulcrum 8e to open the disk insertion / removal opening 12, and the disk 4 is inserted / removed. .

FIG. 10 shows another conventional example. In the conventional example shown in FIG. 10, the disk insertion / removal opening / closing member 10f has a structure that can be removed from the disk cartridge 1. Also, when the disk insertion / removal opening / closing member 10f is mounted,
The locking claw 6f and the locking hole 7f are fitted to each other so that the locking claw is locked so that the locking claw 6f does not accidentally fall off.

[0009]

[SUMMARY OF THE INVENTION Also shows another example in Figure 11. The example of FIG. 11 also has a structure in which the disk insertion / removal opening / closing member 10g can be removed from the disk cartridge 1 as in the conventional example of FIG. When the disk opening / closing member 10g is mounted, the locking claw 6g and the locking hole 7g are attached.
g is locked by fitting. When the disk opening / closing opening / closing member 10g is removed, the disk 4 can be pulled out of the disk cartridge 1 by the disk auxiliary member 2 arranged on the disk opening / closing opening / closing member 10g.

FIG. 12 shows another example . Conventional example also 10 in FIG. 12, an example as well as the disk slot closing member 10h in FIG. 11 is made from the disc cartridge 1 in the removable structure. Also, when the disk insertion / removal opening / closing member 10h is mounted, the locking claw 6h and the locking hole 7h are engaged with each other to be locked. When the disk insertion / removal opening / closing member 10h is removed, the disk 4 can be pulled out of the disk cartridge 1 while being held by the disk holding member 5 arranged on the disk insertion / removal opening / closing member 10h.

In the above-described disk cartridge, when a disk cartridge containing a disk once taken out is used in a recording and / or reproducing apparatus corresponding to the cartridge, it is necessary for the apparatus to detect that the disk cartridge has been taken out. This is because, as described above, since the recording operation of the optical disk is sensitive to dirt, the recording operation of the disk which has been taken out to the outside is prohibited or more recording checks are performed. A method of detecting the history of disk removal will be described with reference to FIG. FIG. 13 shows a structure in which a disk insertion / removal opening 12 is opened / closed by a disk insertion / removal opening / closing member 10i and a disk is inserted / removed similarly to the conventional example of FIG. The locking of the disc insertion / removal opening / closing member 10i is performed by fitting the locking claw 6i and the locking hole 7i and fitting the locking member 11 into the locking hole 9. When the locking claw 6i is removed from the locking hole 7i, the locking claw 6i is moved in the inner direction of the disc cartridge.
Is elastically deformed, so that once it is removed, it can be fitted again. On the other hand, the locking member 11 is
When the locking member 11 is removed from the disk opening / closing member 10i, the locking member 11 is broken. When opening the disk insertion / removal opening / closing member 10i, it is necessary to release these two types of locking means. However, when the disk insertion / removal opening / closing member 10i is opened, the locking member 11 is broken, and the disk is removed. The history can be recognized by detecting this broken state.

[0012] upper SL, uniquely disk unloading history when in the prior art eject a disc from the disc cartridge is to remain in the disc cartridge. However, the purpose of ejecting a disc may be to use the disc by moving it between disc cartridges, in addition to using the disc alone for reproduction only as described in the conventional example. In this case, the user does not actively handle the disc, and there is little possibility that the disc surface becomes dirty. In addition, the insertion and removal openings of the disk cartridge are brought into close contact with each other, and by moving the disk, it is unnecessary to directly touch the disk, and no dirt is attached. Even in such a case, if the disc removal history remains, recording is impossible or excessive recording check is performed even though the disc is not stained, and the usability of the disc is reduced.

According to the present invention, when a disc removal history is taken out for use as a single disc, the disc is left in the disc cartridge, and the user actively handles the disc such as moving the disc between disc cartridges. The purpose is not to leave it when it is not.

[0014]

The disk slot is openable and closable by a slot opening / closing member. When the slot opening / closing member is closed, locking means for locking the opening / closing member and a locking means are provided. Lock release preventing means for preventing the release of the opening / closing member from being released is arranged in the disk cartridge.

[0015] The lock release preventing means has a shape in which the lock means covers at least a part of the portion exposed to the outside of the disk cartridge.

Further, by displacing at least a part of the lock release preventing means irreversibly, at least a part of the lock means covered by the lock release preventive means is exposed to the outside of the disk cartridge.

Further, at least a part of the lock release preventing means is arranged on a movement path required for the lock means to release the lock.

Further, the lock release prevention means is irreversibly displaced from the movement path of the lock means to the outside of the movement path to enable the movement of the lock means, thereby enabling the lock release.

Further, the lock release preventing means is reversibly displaced from the moving path of the locking means to the outside of the moving path, and the locking means is moved and unlocked with the lock release preventing means displaced. .

Further, by detecting the state of the lock release prevention means, the disc insertion / removal history can be recognized.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 is an overall view showing a structure in which a part of the inside of a disk cartridge according to a first embodiment of the present invention is seen through . As shown in FIG. 1, the disk cartridge 1 has a disk insertion / removal opening 12 through which the disk 4 passes when the disk 4 is inserted / removed. When the disk cartridge 1 contains the disk 4, the disk insertion / removal opening / closing member 10 a is locked to the disk insertion / removal opening 12 by locking means. The locking means of this embodiment comprises a locking claw 6a and a locking hole 7a, and is locked by fitting the locking claw 6a into the locking hole 7a. The locking hole 7a is non-penetrating, so that it is impossible to release the locking from the outside of the disk cartridge 1 through the locking hole 7a.

FIG. 2 illustrates the locking state of the locking means and the method of releasing the locking. FIG. 2 is a diagram showing the details of the lock release preventing member 16a which is the lock means and the lock release prevention means. When the disk insertion / removal opening / closing member 10a is mounted on the disk cartridge 1, the locking claw 6a is fitted and locked in the locking hole 7a as shown in FIG.
Further, since the lock release preventing member 16a is arranged below the lock claw 6a, the lock claw 6a is hardly exposed to the outside. It is difficult to remove it from the stop hole 7a. When the user removes the disk from the disk cartridge 1 to use the disk alone, the lock release prevention member 16a is broken as shown in FIG. 2B. Lock release prevention member 1
By breaking and removing the 6a, the locking claw 6a is exposed to the outside and the locking claw 6a can be removed. In this case, the removal history is recognized by detecting breakage of the lock release prevention member 16a. If the user does not want to keep a history of taking out the disk, such as moving the disk between disk cartridges, as shown in FIG.
Is performed by removing the locking claw 6a without destroying.

A method for removing the locking claw 6a without breaking the locking release preventing member 16a will be described with reference to FIG. Lock release prevention member 16a and disk cartridge 1
A small opening 19a is provided between them so that the user cannot operate the locking claw 6a with a finger. By inserting the lock release member 18a from the opening 19a, the lock claw 6a can be moved and removed from the lock hole 7a as shown in FIG. The unlocking member 18a is provided, for example, in the vicinity of the disk insertion / removal opening of the disk cartridge to which the disk is moved, and can perform two operations of unlocking and moving the disk by pressing the disk cartridge 1 of the present invention. I can do it.

Next, FIGS. 4 to 6 show a second embodiment of the present invention. FIG. 4 is a view showing the structure of a disk cartridge according to a second embodiment of the present invention. As in the first embodiment, this embodiment also has a disk insertion / removal opening 12, and the disk insertion / removal opening / closing member 10j is locked to the disk insertion / removal opening 12 when the disk cartridge 1 contains the disk 4. Locked by means. The locking means of this embodiment also includes a locking claw 6j and a locking hole 7j, and is locked by fitting the locking claw 6j into the locking hole 7j. In the case of a disk cartridge from which a disk has not been taken out, the disk cartridge 1 and the lock release prevention member 16j almost cover the member having the locking claw 6j. The locking hole 7j is non-penetrating, so that the locking cannot be released from the outside of the disk cartridge 1 through the locking hole 7j.

FIG. 5 shows the locking state of the locking means and the method of releasing the locking. FIG. 5 is a diagram showing the details of the lock release preventing member 16j which is the lock means and the lock release prevention means. 5 (a) to 5 (c) are lock release prevention members 1.
It is an external view of the vicinity where 6j is arranged, and the right figure shows its internal structure. When the disk opening / closing member 10j is mounted on the disk cartridge 1, FIG.
As shown in (a), a locking claw 6j is fitted and locked in a locking hole 7j. Almost the entire surface of the member having the locking claw 6j is engaged with the disk cartridge 1 and the locking release preventing member 16j.
In this state, it is difficult for the user of the disk cartridge to remove the locking claw 6j from the locking hole 7j. In order for the user to use the disk alone, the unlocking prevention member 16j is broken as shown in FIG. 5B, and the lower portion of the member having the locking claw 6j is exposed to the outside.
It is necessary to disengage the locking claw 6j by displacing this portion in the direction of the arrow. In this case, the disk device recognizes the disk removal history of the disk cartridge 1 by detecting breakage of the lock release prevention member 16j. If the user does not want to keep a history of taking out the disk, such as moving the disk between disk cartridges, as shown in FIG.
This is done by removing j.

Next, a method of removing the locking claw 6j without breaking the locking release preventing member 16j will be described with reference to FIG. A small opening 19j is provided between the lock release preventing member 16j and the disk cartridge 1 such that a user cannot operate the locking claw 6j with a finger. This opening 19j
By inserting the unlocking member 18j from FIG.
As shown in the figure, the locking claw 6j can be moved and removed from the locking hole 7j. The unlocking member 18j is provided, for example, inside the disk cartridge to which the disk is moved,
After pressing the disk cartridge 1 of the present invention, the locking release member 18j is moved to release the locking, and the disk is moved. In the present embodiment, unlike the first embodiment, the lock release preventing member 16j is
It is also exposed on the front surface or back surface. Therefore, the removal history can be detected from the front surface or the back surface of the disk cartridge 1, and the degree of freedom in designing the sensor arrangement on the disk device side can be increased.

Next, FIG. 7 and FIG. 8 show a third embodiment of the present invention. FIG. 7 is a view for explaining the locking state of the locking means and the locking release method according to the third embodiment of the present invention. The locking is performed by the locking claws 6b fitting into the locking holes 7b as in the first embodiment. In order to release the locking claw 6b from the locking hole 7b, it is necessary to move the disk cartridge 1 inward, and the locking release prevention member 16b is arranged on this movement path. In this state, it interferes with the lock release preventing member 16b, so that the lock claw 6b cannot be moved and the lock cannot be released. When the user removes the disc from the disc cartridge 1 for use alone,
As shown in FIG. 7B, the lock release prevention member 16b is broken. By breaking and removing the lock release prevention member 16b, the lock claw 6b can be moved and the lock claw 6b can be removed. In this case, the removal history is recognized by detecting breakage of the lock release prevention member 16b. When it is not desired to keep a history of taking out the disk, such as when the disk is moved between disk cartridges, the lock release preventing member 16b is elastically deformed as shown in FIG. 7C, and the locking claw 6b is moved in this state. To release the lock.

A method of removing the locking claw 6b while deforming the locking release preventing member 16b will be described with reference to FIG.
The deformation of the lock release preventing member 16b and the movement of the lock claw 6b need to be performed almost simultaneously. For this reason, as shown in FIG. 8B, the locking release member 18b having a forked tip as shown in FIG. 8A is pressed against the locking claw 6b and the locking release preventing member 16b, as shown in FIG. The locking claw 6b can be moved while deforming the locking release prevention member 16b, and can be removed from the locking hole 7b. The unlocking member 18b is provided, for example, in the vicinity of the disk insertion / removal opening of the disk cartridge to which the disk is moved, and can perform two operations of unlocking and moving the disk by pressing the disk cartridge 1 of the present invention. I can do it.

As described above, when a user removes a disk and uses the disk alone, the removal history is left in the disk cartridge, and the user actively handles the disk, such as moving the disk between disk cartridges. According to the present invention, it is possible to provide a disk cartridge that does not leave a disk removal history in the disk cartridge when the disk cartridge is not actively performed.

[0031]

According to the above arrangement, when a user removes a disk and uses the disk alone, the removal history is left in the disk cartridge, and the user can handle the disk by moving the disk between disk cartridges. In the state in which the disc removal is not actively performed, the disc removal history does not remain in the disc cartridge.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a view showing a structure of a disk cartridge.

FIG. 2 is a view showing a first embodiment of the present invention, and is a view showing a structure of a locking means and a lock release preventing means of a disk insertion / removal opening / closing means.

FIG. 3 is a view showing one embodiment of the present invention, and is a view for explaining a method of unlocking the locking means of the disk insertion / removal opening / closing means without breaking the unlocking prevention means;

FIG. 4 is a view showing a second embodiment of the present invention, and is a view showing the structure of a disk cartridge.

FIG. 5 is a view showing a second embodiment of the present invention, and is a view showing a structure of a locking means and a lock release preventing means of a disk insertion / removal opening / closing means.

FIG. 6 is a view showing a second embodiment of the present invention, and is a view for explaining a method of unlocking the locking means of the disk insertion / removal opening / closing means without breaking the unlocking prevention means.

FIG. 7 is a view showing a third embodiment of the present invention, and is a view showing a structure of a locking means and a lock release preventing means of a disk insertion / removal opening / closing means.

FIG. 8 is a view showing a third embodiment of the present invention, and is a view for explaining a method of unlocking the locking means of the disk insertion / removal opening / closing means without breaking the unlocking prevention means.

FIG. 9 is a view showing a conventional technique, and is a view showing a disk insertion / removal structure of a disk cartridge.

FIG. 10 is a view showing a conventional technique, and is a view showing a disk insertion / removal structure of a disk cartridge.

11 is a diagram showing the disk insertion structure to Disk Cartridge.

12 is a diagram showing the disk insertion structure to Disk Cartridge.

FIG. 13 is a diagram showing a conventional technique, and is a diagram for explaining a disk removal history structure of a disk cartridge.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disc cartridge, 2 ... Disc auxiliary member, 3
... Shutter, 4 ... Disk, 5 ... Disk holding member, 6
a, 6b, 6e, 6f, 6g, 6h, 6i, 6j ... locking claw, 7a, 7b, 7e, 7f, 7g, 7h, 7i, 7j
... Locking holes, 8e, 8i.
a, 10b, 10e, 10f, 10g, 10h, 10
i, 10j: insertion / removal opening / closing member, 11: locking member, 12 ...
Disc insertion / removal opening, 16a, 16b, 16j: unlocking prevention member, 17a, 17b, 17j: unlocking prevention member breaking portion, 18a, 18b, 18j: unlocking member, 19
a, 19j ... small opening,

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Atsushi Inoue 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Multimedia Systems Development Division of Hitachi, Ltd. (72) Inventor Hiroaki Ono Yoshida, Totsuka-ku, Yokohama-shi, Kanagawa 292, Hitachi, Ltd. Multimedia System Development Division, Hitachi, Ltd. (56) References JP-A-9-45032 (JP, A) JP-A-9-213044 (JP, A) JP-A-7-320359 (JP) , A) JP-A-9-213041 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 23/00

Claims (1)

(57) [Claims] 1. A disk cartridge containing a disk-shaped recording medium, said recording medium being insertable into and removable from said disk cartridge, said disk cartridge having an insertion / removal opening / closing member. The insertion / removal opening / closing member is moved from the disk cartridge, and the insertion / removal opening / closing member has a disk holding member. When the insertion / removal opening / closing member is removed from the disk cartridge, the disk holding member is connected to the disk. shaped for the recording medium
Outside the recording medium inside the disc cartridge body from the center
A disc cartridge having a peripheral portion , wherein the disc can be detached from the disc cartridge main body together with the insertion / removal opening / closing member, wherein the disc cartridge has a recognition section for the insertion / removal history of the recording medium.