JPH0869676A - Disk cartridge - Google Patents

Abstract

PURPOSE: To unnecessitate an upper case, to reduce the number of components and to prevent the generation of welding mistake by mounting a shutter plate on a lower case so as to freely slide in one direction. CONSTITUTION: The shutter plate 60 is mounted on the lower case 10 so as to freely slide in one direction by holding the lower case 10 with a sliding wall 62 so as to freely slide and also engaging a sliding guide rib 64 into a sliding guide groove 70. By such a constitution, the shutter plate 60 is mounted so as to freely slide left and right to open/close a head inserting window 16. Further, an opening/closing cover 40 with the size almost the same as that of the case 10 is mounted on the lower case 10 through a hinge 50. At the nearly center of the cover 40, a rotational pressing shaft 44 for holding and rotating a disk is mounted on a center hole 42 so as to freely rotate. The hinge 50 of this cover 40 is mounted near one side of the outer periphery of the case 10. Consequently, the exchange to a desired disk is attained by opening this cover 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge for rotatably housing a disk which is an information recording medium, and in particular, a shutter plate is not slidably attached to both a lower case and an upper case. The present invention relates to a disc cartridge in which a shutter plate is slidably attached only to a lower case and the upper case is substantially unnecessary.

[0002]

2. Description of the Related Art Conventionally, a disk cartridge for rotatably accommodating a disk which is an information recording medium is known from, for example, Japanese Utility Model Laid-Open No. 63-68174 and a CD-ROM
It is possible to prevent the disc from being damaged by storing it in such a disc cartridge and handling it. As shown in FIG. 4, such a disc cartridge includes a disc housing portion (1) for housing a disc in the lower case (10).
2) is provided, and a head insertion window (16) for recording and reproduction is provided on the bottom surface of the lower case (10), and the head insertion window (16) has an openable shutter plate (2).
0) is attached, and an opening / closing lid (40) for loading and unloading the disc is attached via a hinge (50).

Here, the shutter plate (20) is slidably attached to the left and right, and the head insertion window (16) is normally closed, but it is constructed so that it is automatically opened by attaching it to a recording / reproducing apparatus. ing. The shutter plate (20) is slidably attached to the left and right so that the L-shaped sliding wall (22) is folded from the end of the shutter plate (20) as shown in FIG. The lower case (1) with the shutter plate (20)
0) and a sliding guide groove (32) provided on the inner surface of the upper case (30) is slidably fitted with a sliding guide rib (24) provided at the tip of the sliding wall (22). ,
As a result, the shutter plate (20) is slidably attached only in one direction. The upper case (30) is fixed to the lower case (10) by fusion bonding.

Here, in the conventional disc cartridge, the upper case (30) is necessary for the shutter plate (20) to be slidably attached. Yields are poor, the number of parts is large, and the upper case (30)
Since it blocks a considerable part of the upper surface of the disc storage part (12), there is a drawback that the disc must be mounted in an oblique direction when it is placed in the disc storage part (12).

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above drawbacks, in which the upper case is abolished and the shutter plate is slidably attached only to the lower case. This eliminates the drawbacks such as the occurrence of fusion mistakes when mounting the case, the large number of parts, and the necessity of mounting the disc in an oblique direction when mounting the disc in the disc storage portion.

[0006]

In order to achieve the above object in the present invention, first, in the first invention, a disc which is an information recording medium is rotatably accommodated and recording / reproducing of the disc is performed. In a disk cartridge having a head insertion window (16) with a shutter plate, the lower case (10) has a sliding guide groove, and the shutter plate has an L-shaped sliding wall and A sliding guide rib slidably fitted in the sliding guide groove is provided, the lower case (10) is slidably sandwiched by the sliding wall, and the sliding guide rib is fitted in the sliding guide groove. The shutter plate is a disk cartridge characterized by being attached to the lower case (10) slidably in one direction to open and close the head insertion window (16).

According to the second aspect of the invention, a disk as an information recording medium is rotatably accommodated and a head insertion window (1) with a shutter plate for recording / reproducing the disk is provided.
In the disc cartridge including 6), a sliding guide groove (70) is provided on the back surface of the lower case (10),
Further, the shutter plate (60) is provided with a sliding wall (62) curved in an L shape and a sliding guide rib (64) slidably fitted in the sliding guide groove (70). The lower case (10) is slidably sandwiched by the (62) and the sliding guide rib (64) is fitted into the sliding guide groove (70), whereby the shutter plate (60)
Is a disc cartridge which is slidably attached to the lower case (10) in one direction to open and close the head insertion window (16).

Furthermore, in the third invention, a disk cartridge which accommodates a disk as an information recording medium rotatably and has a head insertion window (16) with a shutter plate for recording / reproducing the disk. At
The inner surface of the lower case (10) is provided with a sliding guide groove (90), and the shutter plate (80) has a sliding wall (82) curved in an L shape and the sliding guide groove (90). Includes a sliding guide rib (84) that is slidably fitted,
The lower case (10) is slidably sandwiched by the sliding wall (82) and the sliding guide rib (84) is fitted in the sliding guide groove (90), whereby the shutter plate (8)
Reference numeral 0) is a disk cartridge which is slidably attached to the lower case (10) in one direction to open and close the head insertion window (16).

Further, according to the fourth aspect of the invention, a disc cartridge, which is an information recording medium, is rotatably accommodated and has a head insertion window (16) with a shutter plate for recording and reproducing the disc. At
The lower case (10) is provided with a sliding guide groove, and the shutter plate is provided with an L-shaped curved sliding wall and a sliding guide rib slidably fitted in the sliding guide groove. The shutter plate is slidably attached to the lower case (10) in one direction by sandwiching the lower case (10) slidably by the sliding walls and fitting the sliding guide rib into the sliding guide groove. A disk cartridge characterized in that a head insertion window (16) is opened and closed, and an opening / closing lid (40) is attached to the lower case (10) through a hinge (50).

Further, according to the fifth aspect of the invention, a disc cartridge, which is an information recording medium, is rotatably accommodated and has a head insertion window (16) with a shutter plate for recording and reproducing the disc. At
The lower case (10) is provided with a sliding guide groove, and the shutter plate is provided with an L-shaped curved sliding wall and a sliding guide rib slidably fitted in the sliding guide groove. The shutter plate is slidably attached to the lower case (10) in one direction by sandwiching the lower case (10) slidably by the sliding walls and fitting the sliding guide rib into the sliding guide groove. The head insertion window (16) is opened and closed, and an opening / closing lid (40) having substantially the same size as the lower case (10) is attached to the lower case (10) through a hinge (50). Is the lower case (1
The disk cartridge is characterized in that the disk cartridge is mounted near one side of the outer periphery of (0).

[0011]

According to the disk cartridge of the present invention as described above, since the shutter plate is slidably attached to the lower case in one direction, the upper case is not required.

[0012]

The present invention will be described in detail with reference to the following examples. <Embodiment 1> As shown in FIGS. 1 and 3, the present disk cartridge accommodates a disk, which is an information recording medium, rotatably, and a head having a shutter plate (20) for recording and reproducing the disk. It is provided with an insertion window (16). Although not shown, the shutter plate (6
0) is pressed to one side by a suitable spring and closes the head insertion window (16) if no force is applied. A sliding guide groove (7) with a constant width is provided on the rear surface end of the lower case (10).
0). Further, an L-shaped curved sliding wall (62) is provided at the end of the shutter plate (60) so as to be folded back, so that the end of the shutter plate (60) has a U-shape. Further, the shutter plate (60) is provided with a sliding guide rib (64) which is slidably fitted in the sliding guide groove (70).

By the sliding wall (62), the lower case (1
0) slidably sandwiching the sliding guide groove (70)
The shutter plate (60) is attached to the lower case (10) slidably in one direction by fitting the sliding guide rib (64) into the. With such a configuration, the shutter plate (60) is slidably attached to the left and right as the head insertion window (16) is opened and closed.

Further, an opening / closing lid (40) having substantially the same size as the lower case (10) is attached to the lower case (10) via a hinge (50). Open / close lid (40)
A rotary push shaft (44) for sandwiching and rotating the disk is rotatably attached to the center hole (42) at substantially the center of the disk. The hinge (50) of the opening / closing lid (40) is attached near one side of the outer circumference of the lower case (10). Therefore, the opening / closing lid (40) can be opened and replaced with a desired disc.

<Embodiment 2> FIG. 2 shows another embodiment. The second embodiment is the same as the first embodiment except for the mounting structure of the shutter plate (80).
Only the mounting configuration of will be described in detail. Lower case (1
0) is provided with a sliding guide groove (90) having a constant width at the inner surface end thereof. Further, the shutter plate (80) is provided with a sliding wall (82) curved in an L-shape, so that the end portion has a U-shape. A sliding guide rib (84) slidably fitted in the sliding guide groove (90) is provided at the tip of the sliding wall (82) of the shutter plate (80). The lower case (10) is slidably sandwiched by the sliding wall (82), and the sliding guide rib (84) is fitted into the sliding guide groove (90), so that the shutter plate (80) is moved to the lower case (80). 10) is slidably attached in one direction. With such a configuration, the shutter plate (8
0) is attached to the lower case (10) slidably in one direction and opens and closes the head insertion window (16).

[0016]

Since the present invention has the above-mentioned constitution, it has the following effects. That is, in the disc cartridge of the present invention, since the shutter plate is slidably attached only to the lower case, the upper case is not required. As a result, since the upper case is not required, the number of parts is reduced, and when the upper case is conventionally fused to the lower case, a spring or the like has to be attached, so that a fusion error frequently occurs. There is no such drawback. Furthermore, in the conventional disc cartridge, the upper case blocks a considerable part of the upper surface of the disc storage part, so when mounting the disc in the disc storage part, it is necessary to mount it from an oblique direction, which makes it difficult to mount. In addition, the disk cartridge of the present invention has a drawback of easily damaging the disk, but the disk cartridge of the present invention can have an opening / closing lid over the entire upper surface thereof, and thus does not have such a conventional defect. Therefore, the present invention exhibits excellent practical effects in applications such as CD-ROM disk cartridges.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a configuration of a mounting portion of a shutter plate showing an embodiment of the present invention, A is a perspective explanatory view of a shutter plate, and B is an explanatory view of a partial cross section.

FIG. 2 is an explanatory view showing a configuration of a mounting portion of a shutter plate showing another embodiment of the present invention, A is a perspective explanatory view of the shutter plate, and B is an explanatory view of a partial cross section.

FIG. 3 is a perspective explanatory view of a disk cartridge showing an embodiment of the present invention.

FIG. 4 is a perspective explanatory view of a conventional disc cartridge.

FIG. 5 is an explanatory view of a partial cross section showing a configuration of a mounting portion of a shutter plate of a conventional disc cartridge.

[Explanation of symbols]

 10 ... lower case 12 ... disk storage part 14 ... locking part 16 ... head insertion window 20 ... shutter plate 22 ... sliding wall 24 ... sliding guide rib 30 ... upper case 32 ... sliding Guide groove 40 ... Opening / closing lid 42 ... Center hole 44 ... Rotating push shaft 46 ... Locking part 50 ... Hinge 60 ... Shutter plate 62 ... Sliding wall 64 ... Sliding guide rib 70 ... Sliding Guide groove 80 Shutter plate 82 Sliding wall 84 Sliding guide rib 90 Sliding guide groove

Claims (5)

[Claims] 1. A lower case (10) for a disc cartridge, which accommodates a disc, which is an information recording medium, rotatably and has a head insertion window (16) with a shutter plate for recording and reproducing the disc. Is provided with a sliding guide groove, and the shutter plate is provided with a sliding wall curved in an L shape and a sliding guide rib slidably fitted in the sliding guide groove. The shutter plate is slidably attached to the lower case (10) in one direction by sandwiching the case (10) in a slidable manner and fitting the slide guide ribs into the slide guide grooves, and the head insertion window (16) ) Is opened and closed. 2. A lower case (10) for a disk cartridge, which accommodates a disk as an information recording medium rotatably and has a head insertion window (16) with a shutter plate for recording and reproducing the disk. The back surface of the slide plate is provided with a sliding guide groove (70), and the shutter plate (6
0) is provided with a sliding wall (62) curved in an L shape and a sliding guide rib (64) slidably fitted in the sliding guide groove (70). The shutter plate (60) slides in one direction on the lower case (10) by sandwiching the lower case (10) slidably and fitting the sliding guide ribs (64) into the sliding guide grooves (70). A disk cartridge, which is freely attached to open and close a head insertion window (16). 3. A lower case (10) in a disk cartridge having a disk as an information recording medium rotatably housed therein and having a head insertion window (16) with a shutter plate for recording and reproducing the disk. A slide guide groove (90) is provided on the inner surface of the shutter plate (8).
0) includes a sliding wall (82) curved in an L shape and a sliding guide rib (84) slidably fitted in the sliding guide groove (90). The lower case (10) is slidably sandwiched, and the sliding guide rib (84) is fitted into the sliding guide groove (90), so that the shutter plate (80) slides in one direction on the lower case (10). A disk cartridge, which is freely attached to open and close a head insertion window (16). 4. A lower case (10) in a disc cartridge, which accommodates a disc, which is an information recording medium, rotatably and has a head insertion window (16) with a shutter plate for recording and reproducing the disc. Is provided with a sliding guide groove, and the shutter plate is provided with a sliding wall curved in an L shape and a sliding guide rib slidably fitted in the sliding guide groove. The shutter plate is slidably attached to the lower case (10) in one direction by sandwiching the case (10) in a slidable manner and fitting the slide guide ribs into the slide guide grooves, and the head insertion window (16) ) Is opened and closed, and an opening / closing lid (40) is attached to the lower case (10) via a hinge (50). 5. A lower case (10) in a disk cartridge having a disk as an information recording medium rotatably housed therein and having a head insertion window (16) with a shutter plate for recording and reproducing the disk. Is provided with a sliding guide groove, and the shutter plate is provided with a sliding wall curved in an L shape and a sliding guide rib slidably fitted in the sliding guide groove. The shutter plate is slidably attached to the lower case (10) in one direction by sandwiching the case (10) in a slidable manner and fitting the slide guide ribs into the slide guide grooves, and the head insertion window (16) ) Is opened and closed, and the lower case (10) has an opening / closing lid (40) of about the same size as the lower case (10).
Is attached via a hinge (50), and the hinge (50) is attached near one side of the outer circumference of the lower case (10).