JPH052813A - Multi-disk player - Google Patents

Abstract

PURPOSE:To provide a multi-disk player capable of coping with plural kinds of disks of different diameters with a single disk driving part and a pickup. CONSTITUTION:This multi-disk player is provided with a large diameter disk placing part A and plural small diameter disk placing parts B, C, D. The device is constituted so that the center of each small diameter disk placing part B, C, D can be selectively made to coincide with a center X1 of the large diameter disk placing part A by rotating and displacing each small diameter disk placing part, B, C, D in a center X2. Thus, by the coincidence of the centers of the large diameter disk placing part A with the small diameter disk placing parts B, C, D the sharing of a disk driving part 6, etc., is available.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a CD single, a CD,
Small-diameter disc such as CD-V, 20 cm LD, LD
The present invention relates to a multi-disc player capable of reproducing a plurality of types of discs having different diameters, such as a large-diameter disc.

[0002]

2. Description of the Related Art A large-diameter disk mounting portion and a plurality of small-diameter disk mounting portions are provided to reproduce a large-diameter disk such as an LD or to load a plurality of small-diameter disks such as a CD at the same time. A multi-disc player capable of reproducing and the like has already been proposed, for example, in Japanese Patent Laid-Open Nos. 64-7322 or 63-231766.

[0003]

However, in any of the conventionally proposed multi-disc players, the structure is such that the center of the large-diameter disc mounting portion does not coincide with the center of the small-diameter disc mounting portion. Therefore, the cost has risen and the structure has become complicated, and the device cannot be downsized.

For example, in the one proposed in Japanese Patent Laid-Open No. 64-7362, by providing a plurality of disk drive units including a spindle motor (for a large-diameter disk and a small-diameter disk), it is possible to cope with disks having different diameters. In addition, it is necessary to adopt a structure that can move to the retracted position when playing a large-diameter disk in the disk drive unit for small-diameter disks, which not only complicates the structure further, but also significantly increases the cost. It is an invitation.

Further, in the one proposed in Japanese Patent Laid-Open No. 63-231766, one disk drive unit can cope with disks having different diameters, but the disk drive unit is set to a large-diameter disk reproducing position. Since it is necessary to translate the small-diameter disc playback positions along the disc surface in parallel, it is necessary to secure a space for moving the disc drive unit in the player body, which not only greatly hinders downsizing, but also the structure. However, there is a problem in that the cost becomes higher and the cost becomes higher.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a large-diameter disk mounting portion and a plurality of displaceable small-diameter disk mounting portions, and to mount the small-diameter disk mounting portion. The center of each small-diameter disk mounting portion is selectively aligned with the center of the large-diameter disk mounting portion by displacement of the mounting portion.

Further, an opening for allowing a disk drive portion to be inserted into the large-diameter disk mounting portion and allowing scanning by a pickup is formed outward in the radial direction from the central portion, while each small-diameter disk mounting portion is provided with an opening. When the center coincides with the center of the large-diameter disk mounting portion, an opening that is continuous with the opening of the large-diameter disk mounting portion is formed.

[0008]

With the above structure, the center of each small-diameter disk mounting portion can be made to coincide with the center of the large-diameter disk mounting portion selectively. Therefore, the disk drive portion and the pickup can be commonly used. In addition, it is not necessary to secure a space for moving the disc drive unit and the like along the disc surface inside the player main body, and it is possible to sufficiently reduce the cost and simplify the structure and to downsize the device. It can be achieved together.

[0009]

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

FIG. 1 shows an external appearance of a multi-disc player according to an embodiment of the present invention in an unloading state. As shown in the figure, in the multi-disc player of this embodiment, the disc tray 1 is equipped with a box-shaped frame 2 of the player main body so that it can be moved forward and backward.
The disc tray 1 is a rectangular disc table 3
And a substantially disk-shaped rotary table 4 provided therein.

On the upper surface of the disk table 3, there are formed concentric arcuate recesses a ₁ and a ₂ with the center X ₁ set at a substantially central portion of the table 3, and on the surface of the rotary table 4 are formed. the recess a _1, partial arc shaped recesses a ₁ leading to a ₂ ', a _2' is formed, the large-diameter disk mounting part a is formed. That is, the rotary table 4 is located inside and outside the large-diameter disk mounting portion A, and forms arcuate concave portions a ₁ ′ and a ₂ ′ that form a part of the large-diameter disk mounting portion A. . Incidentally, the concave portions a ₁ , a ₁ ′ of the large-diameter disk mounting portion A are
A 30 cm LD can be mounted on it, and the recesses a ₂ , a ₂ '
A 20 cm LD can be placed on.

[0012] rotating table 4 can freely rotate about the axis X ₂ that is eccentric in the forward direction from the center X ₁ of the large-diameter disk mounting part A, the center X ₁ around the axis X ₂ Three sets of small-diameter disk mounting portions B, C, and D are provided on a pitch circle P passing through at an angle of 120 °.

Each of the small-diameter disk mounting portions B, C, D has 12
The circular recesses b ₁ , c ₁ and d _{1 on} which the cmCD and 12 cmCD-V can be mounted and the circular recesses b ₂ , c ₂ and d _{2 on} which the 8 cmCD single can be mounted are formed concentrically. Has been done.

Further, an opening 5a is formed radially outward in the large-diameter disc mounting portion A, and each small-diameter disc mounting portion B, C, D is located on the center X ₁ . At this time, openings 5b, 5c, and 5d that are continuous with the opening 5a are formed outward in the radial direction. The straight hole 5 formed by these openings continuously is for allowing the vertical movement of the disk drive portion 6 provided in the frame 2 and the movement of the pickup 7.

The disk drive unit 6 is installed so as to be located immediately below the center X _{1 of the} large-diameter disk mounting portion A when the disk tray 1 is loaded into the frame 2, and is rotationally driven at a high speed by a spindle motor. It The method of supporting the disk placed on the disk tray 1 by the disk drive unit 6 is such that the vertical position of the disk drive unit 6 and the pickup 7 is kept constant and the disk tray 1 is lowered. Even in the system in which the disc on the disc tray 1 is supported by the disc drive unit 6,
It is also possible to raise the disc drive unit 6 and the pickup 7 without lowering the disc tray 1.

On the upper surface of the disk drive unit 6, a CD,
Centering hub 8 that supports CD-V and CD single
And a centering hub 9 for supporting 20 cmLD and 30 cmLD. The pickup 7 linearly moves along the guide shaft 10 in the disk radial direction.

Further, the rotary table 4 is provided with a chord portion 4a by linearly cutting a part of its circumference, and the chord portion 4a is made to coincide with the front edge of the disc table 3 at a predetermined rotation phase. In this state, unloading is performed as shown in FIG.

The multi-disc player of this embodiment is
It is configured as described above, and as shown in FIGS. 3 and 4, the small-diameter disk mounting portions B, C, D of the rotary table 4 are arranged.
3 CDs or CD-V discs 11b, 11
c, 11d, or CD single discs are loaded in the corresponding recesses b _{1 to} d ₁ or b _{2 to} d ₂ , respectively, and the small-diameter disc mounting portions B, C, D are displaced by the rotation of the rotary table 4. By selectively positioning the discs so as to face the disc drive unit 6, three discs can be selectively or continuously driven and reproduced.

Further, as shown in FIGS. 5 and 6, 20c
The disk 12 of mLD or the disk 13 of 30 cm LD is used as the corresponding recesses a ₁ , a ₁ ′ of the large-diameter disk mounting portion A.
Alternatively, a ₂ and a ₂ ′ can be loaded and reproduced.

As described above, in the above embodiment, a plurality of types of disks having different diameters can be handled by sharing the disk drive unit 6 including the spindle motor and the pickup 7.

Although the rotary table 4 may be manually rotated, for example, the rotary table 4 may be provided on the main body side.
It is also possible to provide a driving means such as a motor that is detachably connected to the shaft of the above and rotate the driving means.

[0022]

As described above, in the multi-disc player of the present invention, the center of each small-diameter disc mounting portion can be selectively aligned with the center of the large-diameter disc mounting portion, so that the disc including the spindle motor can be discriminated. It becomes possible to share the drive unit and further the pickup and the like, and it is not necessary to secure a space for moving the disc drive unit and the like along the disc surface inside the player body, which reduces the cost and simplifies the structure. In addition to being able to fully measure the above, it is possible to achieve an excellent effect such that the size of the device can be reduced. or,
An opening is formed in the large-diameter disk mounting part to allow the disc drive part to pass through and allow scanning by the pickup.When the center of each small-diameter disk mounting part is aligned with the center of the large-diameter disk mounting part, the above-mentioned large By forming an opening that is continuous with the opening of the large-diameter disk mounting portion, it is possible to easily realize reproduction of a large-diameter disk or a small-diameter disk by a single disk drive unit and pickup.

[Brief description of drawings]

FIG. 1 is an external perspective view of an essential part showing an unloading state of a disc tray of a multi-disc player according to an embodiment of the present invention.

FIG. 2 is a plan view showing the disc tray.

FIG. 3 is a plan view showing a loaded state of a 12 cm CD in the disc tray.

FIG. 4 is a plan view showing a state of 120 ° rotational displacement from the state of FIG.

FIG. 5 is a plan view showing a loaded state of a 20 cm LD in the disc tray.

FIG. 6 is a plan view showing a loaded state of a 30 cm LD in the disc tray.

[Explanation of symbols]

1 disc tray 3 disk table 4 turntable A large-diameter disk mounting part B, C, D Small disk mounting part

Claims (2)

[Claims] 1. A large-diameter disc mounting portion and a plurality of displaceable small-diameter disc mounting portions, wherein the displacement of the small-diameter disc mounting portion causes the center of each small-diameter disc mounting portion to be a large-diameter disc. A multi-disc player characterized by being configured to selectively coincide with the center of a mounting portion. 2. A large-diameter disk mounting portion is formed with an opening through which a disk drive portion can be inserted and which allows scanning by a pickup, and is formed radially outward from the central portion, while each small-diameter disk mounting portion is provided with an opening. 2. The multi-disc player according to claim 1, wherein an opening is formed which is continuous with the opening of the large-diameter disc mounting portion when the center coincides with the center of the large-diameter disc mounting portion.