JPH053679B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disk cartridge configured to house a disk as a disk-shaped recording medium such as a digital audio disk.

BACKGROUND TECHNOLOGY AND PROBLEMS Disks used as information recording media, such as digital audio disks, are preferably stored in a protective case at least when not in use, from the standpoint of damage prevention and protection from dust. . However, when the disc is housed in a protective case, there is an inconvenience that the disc must be taken out of the protective case and attached to the disc player each time it is used, which is a cumbersome task. In particular, disks installed in cars etc.
When such an operation is performed to attach a disc to a player, it is difficult and may even be dangerous.

OBJECTS OF THE INVENTION In view of the above, the present invention provides a method in which a disk is housed in a disk cartridge, and the disk can be rotated by being attached to a disk mounting portion of a disk player while being housed in the disk cartridge. For example, focusing on the ability to eliminate the above-mentioned inconveniences, it is possible to store the disc in a fixed state at a position where it can be properly and easily installed in the disc mounting part of the disc player. To provide a disk cartridge which releases the fixed state of the disk and does not interfere with the rotation when the disk is attached to the disk and rotated.

Summary of the Invention The disk cartridge according to the present invention has a mounting part on which a disk is placed and an inclined part located around the mounting part and having a surface that recedes as the distance from the mounting part increases. and a first through hole passing through the part where the placing part is formed and a second through hole penetrating the part outside the placing part. It is designed to be able to be stacked on top of the placed disk, and the second
A holding plate member is provided with an engaging portion that takes a position corresponding to the through hole of the holding plate member, and the holding plate member has a state in which the holding plate member is overlapped with the disk placed on the mounting section and presses the disk toward the mounting section side. The disk mounting portion enters the case through the first through hole and engages with the disk in the case, and the rod-shaped member applies a biasing force to the disk. It enters the case through the through hole and comes into contact with the engaging portion of the presser plate member, thereby separating the presser plate member from the disk against the biasing force of the presser spring member. With this configuration, with a relatively simple configuration, the disc can be fixed in a position where it can be properly and easily installed in the disc mounting section of the disc player. - When mounted on the disc mounting part of the player, the fixed state is released and the disc can be smoothly rotated and stored.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of a disk cartridge according to the present invention together with a portion of a disk player to which a disk stored in the disk cartridge is mounted, and FIG. 2 shows an example of a disk cartridge according to the present invention. It is shown by disassembling it. 1st
The example of the disk cartridge shown in FIG. 1 and FIG. and an upper plate 3. On the inside of the base body 2, there is provided an annular inclined portion 4 that surrounds the center of the bottom portion of the base body 2 and is formed integrally with the bottom portion, for example. The center portion of the bottom surface of the base body 2, which is defined by a circle along the lower end of the inclined portion 4, is a mounting portion 6 on which a disk 5 such as a digital audio disk to be stored is placed. has been done. In other words, a circular mounting section 6 on which the disk 5 to be stored is placed is formed on the bottom surface of the base body 2, and the inclined section 4 is arranged around this mounting section 6. The inclined part 4 has a surface that recedes as it moves away from the placing part 6, and therefore, the distance between the mutually opposing parts increases as it moves away from the placing part 6. ing.

The mounting portion 6 is provided with a mounting hole 8 formed in the center thereof through which the disk mounting portion 7 of the disc player is inserted. A reading hole 10 is provided in which a pick-up 9 is inserted, and the inserted pick-up 9 can move in the radial direction of the disk 5 to read signals from the disk 5. ing. The diameter of this mounting portion 6 is selected to be slightly larger than the diameter of the disk 5. By selecting the diameter of the mounting portion 6 to such a dimension, the disk 5 can be fitted with a mounting hole 5 provided in its center.
The center of a is substantially aligned with the center of the mounting hole 8 provided in the mounting section 6, and the mounting section 6 is properly positioned.

Further, a circular presser plate 11 is disposed inside the case 1 so as to overlap the disk 5, and a presser spring 12 is disposed between the presser plate 11, the upper plate 3, and the inner surface.
The presser plate 11 has an engaging protrusion 11x. These pressing plates 11 and pressing springs 12 are connected to the disk 5
Normally, the disk 5 is pressed against the mounting portion 6 via the presser plate 11 by a presser spring 12. For this reason, usually
The disk 5 is positioned on the mounting portion 6 such that the center of the mounting hole 5a provided in the center portion of the disk 5 and the center of the mounting hole 8 provided in the mounting portion 6 substantially coincide with each other. In this state, the disk cartridge is fixed under the force of the pressing spring 12, and even if the disk cartridge is placed in a state where the stored disk 5 is placed upright, the disk 5 will not come off from the mounting portion 6. There is no need to put it away. Therefore, for example, when the center of the mounting hole 8 is made to coincide with the central axis of the disk mounting portion 7, the center of the mounting hole 5a of the disk 5 and the central axis of the disk mounting portion 7 will substantially coincide. Therefore, by properly centering the case 1 and the disk mounting portion 7 and loading it into the disk player,
The disk 5 can be properly and easily mounted on the disk mounting section 7. The disk 5 is placed on the holder 6 with its recording surface in contact with the holder 6, that is, with the recording surface facing the pickup 9.

The inclined portion 4 is arranged so that a storage space having a diameter larger than the diameter of the mounting portion 6 can be obtained at a portion corresponding to the position of the disk 5 when the disk 5 is mounted on the disk mounting portion 7. is inclined to. In this example, the cross-sectional shape has a straight slope that expands the storage space as it extends from the outer circumference of the placing portion 6 toward the upper plate 3. A stepped portion 13 is cut into the inclined portion 4 and is provided to accommodate the engagement protrusion 11x provided on the presser plate 11.
An engaging through hole 15 is formed through which a protruding rod 14 provided on the disc player is inserted.

Furthermore, the disk fixing member 16 of the disk player is inserted into the center of the upper plate 3.
A fixing hole 17 is provided, and holes 11a and 12a are also provided in the center of each of the presser plate 11 and the presser spring 12 in correspondence with the fixing hole 17. Note that the upper plate 3 is attached to the base body 2 with, for example, four screws 20.

When the disk cartridge containing the disk 5 configured as described above is used for reproducing signals from the disk 5, first, for example, the case 1 is placed in a disk player, and the disk 5 is placed in the disk cartridge.
The case 1 is loaded in a vertical position in which the case 1 is held upright.
When the center axis of the case 1 and the center axis of the disk mounting part 7 are aligned, that is, the center of the case 1 and the disk mounting part 7 is properly aligned, the case 1 is inserted into the disk mounting part 7. They are forced to move towards the target. As a result, as shown in FIG. 3, the protruding rod 14 provided on the disc player is inserted into the engaging hole 15 formed in the stepped portion 13 of the inclined portion 4, and its head portion is inserted into the engaging hole 15 formed in the stepped portion 13 of the inclined portion 4. It abuts and engages with the engagement protrusion 11x of the presser plate 11, presses the presser plate 11 against the eccentric force of the presser spring 12, and moves it toward the upper plate 3. As a result, the bias applied to the disk 5 by the presser spring 12 via the presser plate 11 is released, and the disk 5 is released from the fixed state.

At the same time, the disk mounting section 7 is inserted into the case 1 through the mounting through hole 8 provided in the mounting section 6.
The tapered shaft 7a provided in the disc mounting portion 7 engages with the mounting hole 5a of the disc 5,
The disk 5 is moved from above the mounting section 6 toward the upper plate 3. Further, a disk fixing member 16 is connected to a fixing hole 17 provided in the upper plate 3 and a presser spring 1.
inserted into the case 1 through the through hole 12a provided in the holding plate 2 and the through hole 11a provided in the holding plate 11,
It engages with the tapered shaft 7a of the disk mounting portion 7, which is engaged with the mounting hole 5a of the disk 5. With the above steps, the mounting of the disk 5 onto the disk mounting portion 7 is completed.

The above operation ensures that the center of the case 1 and the disk mounting portion 7 is properly aligned, and therefore the center of the mounting hole 5a of the disk 5 and the disk mounting portion 7 are properly aligned.
Since the central axes of the disc 5 and the central axis of the disc 5 are substantially aligned with each other, the disc 5 can be properly and easily mounted on the disc mounting portion 7.

In this manner, the disc 5 mounted on the disc mounting section 7 is rotated within the case 1 at a predetermined number of revolutions by the motor 18 of the disc player. Then, signals recorded on the disk 5 are read by the pick-up 9 which is exposed inside the case 1 through the reading hole 10. At this time, the disk 5 is released from the pressing state by the presser spring 12 via the presser plate 11, and the diameter of the storage space in the part of the case 1 where the disk 5 is located is Since the diameter of the portion 6 is larger than that of the disk 5, and therefore the diameter of the disk 5 is sufficiently larger, the disk 5 can be rotated smoothly. In this case, the disk fixing member 16 is configured to rotate together with the disk 5. Then, for example, when the reading of the signal from the disk 5 is completed, the operation opposite to the above-mentioned operation is performed.
The disk 5 is removed from the disk mounting section 7. As a result, the disk 5 is transferred to the housing 1 again.
Inside, it is placed on the mounting portion 6, and is housed in a fixed state by being pressed by the pressing spring 12 via the pressing plate 11.

In the above example, the slope part 4 has a linear slope, but is not limited to this, and may have a curved slope.In short, the slope part 4 has a linear slope. Disc 5 when it is attached to the disk attachment part 7 of the disk player
The shape may be such that a storage space having a diameter larger than the diameter of the mounting portion 6 can be obtained at a portion corresponding to the position of the mounting portion 6 . In addition, the inclined portion 4
In the above-mentioned example, it is provided over the entire circumference of the placing part 6, but it is not limited to this, and may be provided partially around the placing part 6.

In addition, since the disk 5 is placed on the mounting section 6 with its recording surface in contact with it, a protective member such as a soft cloth is placed on the mounting section 6 in order to protect the recording surface of the disk 5. may be attached.

Effects of the Invention As is clear from the above description, the disk cartridge according to the present invention has a relatively simple structure, can prevent disks from being damaged, and can protect disks from dust. Not only can the disc be stored in a fixed position at a position where it can be properly and easily installed in the disc mounting part of the disc player, but the disc can be stored in a fixed position. When the disc is mounted on the disc mounting portion and rotated, the rotation can be prevented from being hindered. Therefore, the disk cartridge according to the present invention can be used vertically, in which the disk is mounted in the disk mounting section of a disk player with its recording surface vertically.
The advantage of being able to properly and easily attach a disk to the disk attachment part is not lost, and it is particularly suitable for use in a vehicle-mounted disk player and is extremely convenient.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of the disk cartridge according to the present invention together with a portion of a disk player, and FIG. 2 is a cross-sectional view of the disk cartridge shown in FIG. 1.
FIG. 3 is an exploded perspective view of an example of a cartridge, and FIG. 3 is a cross-sectional view for explaining a state in which a disk stored in the example of the disk cartridge shown in FIG. 1 is attached to a disk mounting portion of a disk player. It is. In the figure, 1 is a case, 2 is a base, 3 is an upper plate, 4 is an inclined part, 5 is a disk, 6 is a mounting part, 8 is a mounting hole, 11 is a holding plate, and 11x is an engagement protrusion. , 12 is a pressing spring, and 15 is an engagement hole.

Claims (1)

[Scope of Claims] 1. A mounting part on which a disk is placed, and an inclined part located around the mounting part and having a surface that recedes as it moves away from the mounting part are formed inside. and further provided with a first through hole passing through a portion where the placement portion is formed and a second through hole passing through a portion outside the placement portion; It can be placed in the body and placed on top of the disk placed on the placement section, and
a presser plate member provided with an engaging portion that takes a position corresponding to the second through hole; and a pressing spring member that applies a biasing force to press the disk toward the mounting section, and the disk mounting section enters the casing through the first through hole and presses the disk toward the mounting section. At the same time as it engages with the disk inside the casing, the rod-like member enters the casing through the second through hole and comes into contact with the engaging portion of the presser plate member, causing the presser plate member to be attached to the presser spring member. A disk cartridge characterized in that it is separated from the disk against force.