JPS6015874A - Disc cartridge - Google Patents

Abstract

PURPOSE:To apply the cartridge also to an on-vehicle disc player by providing an energizing means pressing a disc to a mounting part to a case in which the disc is contained to mount easily the disc to a disc loading section with simple constitution. CONSTITUTION:A circular mounting section 6 on which the disc 5 contained in the case 1 is mounted is formed and a tilt part 4 is provided around the mounting section 6. Further, a circular retaining plate is provided while being overlapped onto the disc 5 in the case 1 and a retaining spring 12 is provided between the retaining plate 11 and the inside face of the upper plate 3. Further, the disc 5 is pressed onto the mounting section 6 via the retaining plate 11 by the retaining spring 12. On the other hand, in reproducing a signal from the disc 5, a projected rod 14 provided to a disc player is inserted to an engaging through-hole 15, the head is pressed into contact with an engagement projection part 11x of the retaining plate 11 and engaged therewith to press the retaining plate 11 against the pressing force of the spring 12 and move toward the upper plate 3. Thus, the energizing to the disc 5 by the retaining spring 12 via the retaining plate 11 is released and the disc 5 is released from the fixed state.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disc cartridge having a tab that can accommodate a disc-shaped recording medium such as a digital audio disc or the like, and a closed disc.

BACKGROUND TECHNOLOGY AND PROBLEMS Discs used as information recording media such as digital audio discs are preferably stored in a protective case at least when not in use to prevent damage or protect them from dust. It will be done. However, when the disc is housed in a protective case, there is an inconvenience that the entire disc must be removed from the protective case and installed in the disc player each time it is used, which is a cumbersome task. Particularly in JA operations, where such work is carried out to mount a disc on a disc player installed in a car or the like, it is difficult and potentially dangerous.

OBJECTS OF THE INVENTION In view of the above, the present invention provides a system in which all disks are housed in a disk cartridge, and the disk can be rotated by being attached to a disk loading section of a disk player while being housed in the disk cartridge. For example, we focused on the fact that all of the above-mentioned disadvantages could be solved, and we focused on the fact that all disks can be properly and easily installed in the disk mounting part of the disk player, and can be stored in a fixed position at the desired position. To provide a disk cartridge which releases the fixed state of the disk and does not interfere with its rotation when the disk is attached to a section and rotated.

SUMMARY OF THE INVENTION A disc cartridge according to the present invention has a case in which a placing part on which a stored disc is placed is provided on the inner surface of the case, and the above-mentioned placing part is placed inside the case. A biasing means having at least a pressing spring for bringing the disc into pressure contact with the disk, and a retaining means for completely releasing the biasing force applied to the disk by the biasing means are provided. With this configuration, with a relatively simple configuration, the disk drive can be fixed at a position where it can be properly and easily installed in the disc mounting section of the disc player, and the disc When the disc is mounted on the disc mounting portion of the player, the fixed state is released and the disc can be stored so that it can rotate smoothly.

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

FIG. 1 shows an example of a disc cartridge according to the present invention together with a portion of a disc player into which a disc stored in the disc cartridge is installed, and FIG. 2 shows an example of a disc cartridge according to the present invention. It is shown by disassembling it. The disk shown in Figures 1 and 2
An example of a cartridge has a housing /, and this housing /
are made of, for example, synthetic resin, and are each comprised of a base having a square planar shape and an upper plate 3. On the inside of the base body λ, an annular sloped portion surrounding the center of the bottom portion thereof is provided, for example, integrally formed with the bottom portion. The center part of the bottom surface of the base body, which is defined by the circle along the lower end of this inclined part, is the mounting part B, on which the disc cover for the digital audio disc, etc. to be stored is placed. . In other words, a circular mounting portion B on which the disc S that can be stored is placed is formed on the bottom surface of the base body, and an inclined portion G is arranged around this mounting portion B.

The mounting portion B is provided with a mounting through hole g formed in the center thereof through which the disc mounting portion 7 of the disc player is inserted, and from the center to the outer periphery,
A through hole for reading 9 into which a pick-up of a disc player is inserted and the inserted pickup 9 can move in the radial direction of disc S to read signals from disc S. 10 are provided. The diameter of this mounting portion B is selected to be slightly larger than the diameter of the disfutor. By selecting the diameter of the mounting part B to such a size, the disc has a mounting hole i formed in the center of the disc and a mounting through hole formed in the mounting part B. The center of g substantially coincides with each other, and the position can be properly positioned on the mounting portion 6.

Inside the trench, a circular holding plate // is placed over the disk S, and between this holding plate 1/ and the inner surface of the upper plate 3, pressing springs/ and 2 are placed. There is.

The holding plate // lacks the engaging protrusion //x. These presser plates//, presser springs/, 2fd, and 1 chair means for the disk S are formed, and usually the disk 5il''
J: Pressed against the placing part B via the presser plate // by the presser spring /2. For this reason, normally the disk
The center of the mounting hole (ta) provided in the center of the mounting hole (ta) is aligned with the center of the mounting hole (g) provided in the mounting portion (B), so that it is oriented on the mounting portion (B). , is fixed by pressing spring /2 (-1 force), and even if the disc cartridge is placed in a state where the stored disc k is held upright, the disc 5 will not come off from the mounting portion A. For this reason, for example, when aligning the center of the mounting hole g with the central axis of the disc mounting part 7, the center of the mounting hole 5a of the disc slot and the central axis of the disc mounting part 7 must be aligned. Therefore, by loading the disc player with the so-called center position between the case and the disc mounting section 7 properly aligned, the disc 3 will have -1. , the disc S can be properly and easily mounted on the disc mounting section 7. Note that the disc S is in a state where its recording surface is in contact with the mounting section B, so that the recording surface is in a big position. It is placed on the placement part B in a state where it faces each other.

The sloping part G is inclined so that a storage space with a diameter smaller than the diameter of the mounting part B is obtained at a portion corresponding to the position of the disc shifter when it is mounted on the disc mounting part 7. has been done. In this example, the cross-sectional shape is inclined to form an @ line, which expands the storage space as it extends from the outer periphery of the placing part B toward the upper plate 3. It has become something that we have. A step part /3 is cut into the inclined part to accommodate the engagement protrusion //X provided on the presser plate //. - An engaging through hole /S is formed through which a protruding rod /g provided on the player is inserted.

Additionally, a fixing through hole /7 is provided in the center of the upper plate 3 so that the disc fixing member /A of the disc player can be inserted therethrough.
is provided with a presser plate L/ and a presser spring/2.
Through holes //a and /2a are also provided in the center of each of the holes corresponding to the fixing hole /7. In addition, the upper plate 3 is
It is attached to the base unit with, for example, a number of screws 20.

When a disc cartridge containing a disc holder constructed in this way is used for reproducing signals from the disc S, for example, first, the casing body is placed in a disc player, and the disc filter is placed in a disc player. The cartridge is loaded in an upright vertical position, and the center axis of the case is aligned with the center axis of the disk mounting section 7, that is, the center of the case and the disk mounting section 7 is properly aligned. In this state, the case/is moved toward the disk loading section N 7. As a result, as shown in FIG. 3, the protruding rod /ll provided on the disc player is inserted into the retaining through hole /shio formed in the step /3 in the slope section. The head abuts and engages the engagement protrusion llX of the presser plate //, presses the presser plate // against the biasing force of the presser springs /, 2, and moves it toward the upper plate 3. urge As a result, the bias applied to the disk by the presser spring /2 via the presser plate // is released, and the disk S&''s is released from the fixed state.

At the same time, the disc mounting part is inserted into the casing through the mounting hole gk provided in the mounting part B.
A tapered shaft 7a provided on the disk mounting section 7 engages with the mounting hole of the disk S, and the old disk is moved from above the mounting section 4 toward the upper plate 3. Specifically, the disc fixing member/B is a fixing hole/7 provided in the upper plate 3, a hole/2a provided in the presser foot/2, and a through hole provided in the presser plate////. It is inserted into the case through the hole 3a and engages with the tapered shaft 7a of the disc mounting portion 7, which is engaged with the mounting hole 3a of the disc slot. With the above steps, the mounting of the disc onto the disc mounting section 7 is completed.

The second operation is performed when the center position of the case body and the disc mounting part 7 is properly aligned, so that the center of the mounting hole 5a of the disc 5 and the central axis of the disc mounting part 7 are approximately aligned. Since it is done under the condition that the disk is 5U properly,
Moreover, it can be easily mounted on the disc mounting section 7.

In this way, the nth disc S mounted on the disc mounting section 7 is rotated at a predetermined number of revolutions by the motor/g of the disc player inside the case. Then, the signal that has been completely recorded in the disfter is read 9 by the pick-up device which is exposed inside the case through the reading hole 0k. At this time, disk 5 is
Released from the suppressed state by the presser plate/l and 2, the casing in which the disc S is located is 1.
The diameter of the storage space in the inner part is larger than the diameter of the mounting part B, and therefore, the diameter of the left side of the disc, so that the disc can be rotated smoothly. . In this case, the disc fixing member/B is designed to rotate together with the disc S. In other words, when the reading of the signal from the left side of the disk is completed, the operation opposite to the above is performed.
The disk S is removed from the disk mounting section 7.

As a result, the deflector is once again oriented within the casing, on its mounting plate 1, and is housed in a fixed state by being pressed by the presser spring 2 via the presser plate lt. .

In the above example, the slope part has a linear slope, but is not limited to this, and may have a curved slope. At the part corresponding to the position of the disc when the left disc is mounted on the disc mounting part 7 of the disc player, a storage space with a diameter of a dog can be obtained compared to the diameter of the mounting part B. It suffices if it has a shape. Further, in the above example, the slope part G is provided over the entire circumference of the placing part B, but is not limited to this, and may be provided partially around the placing part B. good.

In addition, since the disk is placed on the platform B so that the disc is not in contact with the recording surface, a soft cloth or the like is placed on the platform B to protect the recording surface of the disk S. A protective member may be attached.

In addition, in the above example, the presser plate// and the presser/
In addition to the combination of the presser plate // and presser spring/2, the biasing means Q for the disk pressure formed by 2 can be pressed against the entire disk mounting portion and released from the pressed state. Of course, a variety of different positions may be taken.

Effects of the Invention As is clear from the above explanation, the disk according to the present invention
With a relatively simple structure, the cartridge not only prevents the disc from being damaged and protects the disc from dust, but also protects the entire disc from being damaged in the disc loading section of the disc player. The disc can be stored in a fixed state at a position where it can be properly and easily mounted, and when the disc stored in the fixed position is mounted on the disc mounting section and rotated, the rotation of the disc is fixed. This can be done to prevent any hindrance from occurring. For this reason, the disc cart according to the present invention allows the disc to be mounted in the disc mounting part of a disc player with its recording surface vertically, even when used vertically. The advantage of being able to properly and easily install the disc is not lost.
In particular, it is suitable for use in a vehicle-mounted disc player, and is extremely convenient.

[Brief explanation of drawings]

FIG. 1 is a side view showing an example of a disc cartridge according to the present invention together with a part of a disc player, FIG. 2 is an exploded perspective view of the example of the disc cartridge shown in FIG. 1, and FIG. The figure is a cross-sectional view -C which serves to explain the state in which a disk housed in the example of the disk cartridge shown in FIG. 1 is loaded into a disk loading section of a disk player. In the figure, / is (middle rest, 2 is the base, 3 is the upper plate, da is the inclination 6'F
fjB % Shio is a disk, Otsu (is a mounting part, // is a presser plate, //x is an engagement protrusion, /2 is a pressing spring, and 15 is an engagement hole.

Claims (1)

[Claims] The placing part on which the stored disc is placed has a case provided on the inner surface thereof, and within the case there is a biasing means having at least a pressing spring for bringing the placed disk into pressure contact with the placing part on the disk. , and retaining means for releasing the force applied to the disk by the urging means.