JPH0845155A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To obtain a disk reproducing device capable of preventing hindrance to loading and unloading a disk even when the device is vertically installed. CONSTITUTION:A disk holder possesses an annular or horseshoe-shaped base part arranged rotatably on the side of the lower surface of a placing part 22 in a disk tray 20 and L-shaped holding projected parts 31, 32 and 33 of elastic flexibility provided projectingly in this base part for the purpose of pressing an upper side circumferential edge part of the disk D placed on the placing part 22. Then, when the disk tray 20 is pulled into a prescribed position, this disk holder 30 is rotated to separate the holding projected parts 31, 32 and 33 from the disk D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a CD, a CD-ROM,
The present invention relates to a disc reproducing device for reproducing information recorded on a disc-shaped disc such as an optical disc and a magneto-optical disc, and more particularly to a disc reproducing device provided with a disc tray for taking a disc in and out of a main body of the device. .

[0002]

2. Description of the Related Art FIGS. 9 and 10 show a CD-ROM player 50 as an example of a conventional disc reproducing apparatus. This CD-ROM player 50 is a box-shaped device body 5
2, a motor 42 for rotating a CD-ROM disc (hereinafter, simply referred to as a disc) D, a turntable 44, an optical head 46, etc. are provided in an appropriate mode, and the disc D is turned on the turntable 44.
A clamp mechanism 48 for sandwiching between
Further, a disc tray 60 for loading / unloading the disc D to / from the apparatus main body 52 is provided.

The disc tray 60 is provided with a shallow concave mounting portion 62 on which the disc D is positioned and mounted, and an opening into which the center hub 44a of the turntable 44 is inserted when the disc D is reproduced. The portion 64 is formed, and a drive mechanism such as a motor or a rack-pinion (not shown) provided in the main body 52 of the apparatus,
The above-mentioned placing portion 62 is pulled out in the horizontal direction with the placement portion 62 facing upward, and is also pulled in.

The CD-ROM player 5 having such a structure
0 is an external type (the one shown in FIGS. 9 and 10) or a built-in type. The built-in type CD-ROM player 5
0'is a personal computer 55 as shown in FIG.
The FDD 70 and the like are horizontally installed in the casing of the above with the placing portion 62 facing upward.

[0005]

By the way, the personal computer 55 having the built-in CD-ROM player 50 'as described above is usually in a state of being laid sideways on the desk (horizontal placement) as shown in FIG. It is arranged and a display is put on it and used. However, when the personal computer 55 is laid on its side and the display is mounted on it, (1) a large installation area for the personal computer is required on the desk, and (2) the height of the display is high. There may be a problem that the position becomes too high, and depending on the use environment, it may be desirable to stand the computer 55 upright (vertically) and place the display next to it.

However, the CD-ROM player 5
If a personal computer 55 with a built-in 0'is placed vertically, a CD-
The ROM player 50 'is also placed in a vertically placed state (a state in which it is rotated by 90 ° from the horizontally placed state), and the placing portion 62 of the disc tray 60 faces sideways, so that the disc D is placed on the disc tray 60. The disk D cannot be placed, and therefore the disk D cannot be taken in and out of the apparatus main body 52.

In view of the above point, an object of the present invention is to provide a disc reproducing apparatus which does not interfere with the loading and unloading of the disc even when it is placed vertically.

[0008]

In order to achieve the above-mentioned object, a disc reproducing apparatus according to the present invention is provided with a turntable for rotating the disc therein, and a disc between the disc and the turntable. A device main body part provided with a clamp means for sandwiching with,
A disc attachment / detachment position in which the disc is positioned and placed, and which has a shallow concave placement part, and which is arranged so as to be able to advance and retreat with respect to the device body part and projects the placement part forward, and in the device body part. A disc holder is provided in addition to a disc tray adapted to selectively take a disc reproducing position to be drawn in and a tray driving means for setting the disc attaching / detaching position and the disc reproducing position on the disc tray. The disc holder is an annular or horseshoe-shaped base portion rotatably arranged on the outer side surface or the lower surface side of the mounting portion of the disc tray, and a disc protruding from the base portion and mounted on the mounting portion. And a holding protrusion that holds down the upper peripheral edge of the disc holder.The disc holder is rotated when the disc tray is pulled to a predetermined position to separate the holding protrusion from the disc. It becomes.

As a more specific example, the disk holder is constantly biased by spring means so as to rotate in the first direction, and the disk holder is elastically bent at a plurality of locations on the outer periphery of the base portion. A bendable L-shaped holding protrusion is provided so as to project, and the disc holder is provided at a portion of the disc tray corresponding to the holding protrusion in the second direction against the biasing force of the spring means. There is provided an inclined guide portion that pushes in the direction of separating the holding projection from the disc when rotated.

As another more specific example, when the disc tray is pulled up to a predetermined position, the disc holder is biased by the spring means by a cam gear which is adapted to mesh with the loading gear of the tray drive means. There is one that is designed to be rotated in the second direction against.

[0011]

In the disc reproducing apparatus according to the present invention having the above-mentioned structure, the disc is placed on the placing portion when the disc tray is projected to the front of the main body of the device to take the disc attaching / detaching position. When pushed a little, the holding projection is bent and the disk fits under the holding projection, and the holding projection holds and holds the disk. In this case, even if the disc reproducing apparatus is placed vertically and the mounting portion faces sideways (horizontally), since the outer peripheral edge of the disc is pressed by the holding projection, the disc is tilted or dropped. Is prevented.

When the disc tray is pulled to a predetermined position in the main body of the apparatus in this state, the disc is clamped by the clamp means between the turntable and the disc holder by the cam gear or the like meshing with the loading gear. It is rotated so that the retaining projections are spaced from the disc.
As a result, the disc is released from the restraint by the holding projection and is rotated together with the turntable to reproduce the information recorded therein.

As described above, by selectively pressing the disc in accordance with the position of the disc tray to prevent the disc from falling and releasing it from the state so as not to hinder the rotation of the disc reproducing apparatus. The degree of freedom in installation is improved, and a personal computer or the like incorporating the same can be used vertically, and effective use on a desk can be achieved.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a CD-ROM player 10 as an example of a disc reproducing apparatus according to the present invention together with a personal computer 100 (same as the above-mentioned 55) in which the CD-ROM player 10 is incorporated, and FIG. 2 shows the CD-ROM of FIG. The parts related to the disc tray 20 of the player 10 are mainly shown.

This CD-ROM player 10 of the illustrated example
Although not shown, a motor for rotating a CD-ROM disc (hereinafter, simply referred to as a disc) D inside the rectangular box-shaped device body 12 is provided, though not shown. A turntable, an optical head, and the like are provided in an appropriate manner, and a clamp mechanism for holding the disc D between the turntable and the turntable is provided. Further, the disc D is taken in and out of the apparatus main body portion 12. A disc tray 20 for performing the operation is provided.

The disc tray 20 is provided with a shallow concave mounting portion 22 on which the disc D is positioned and mounted, and an opening 24 into which the center hub of the turntable is inserted when the disc D is reproduced. Is formed in the main body 12 of the apparatus so that it can be moved back and forth. As can be seen by referring to FIGS. 2 and 3 as well, the rack gear 16 and the main body 12 of the apparatus provided on one side of the main body 12 are provided. By a tray drive mechanism including a built-in loading gear 14 (FIG. 6) and the like, a disk attachment / detachment position (state of FIG. 2) for ejecting the mounting portion 22 forward and a disk reproduction position (FIG. 3 states).

(The mounting portion 22 of the disc tray 20)
As shown in FIG. 4, on the bottom surface of the support protrusions, elongate holes 35a, 35b, 35c formed in the disc holder 30 described below are inserted at three predetermined intervals (about 120 degrees). The portions 25a, 25b, 25c are provided in a protruding manner, and a support shaft 26, which is taller than the supporting protrusion 25b and supports a cam gear 40, which will be described later, is provided in a protruding manner.

Further, the outer peripheral portion (side peripheral portion of the concave mounting portion 22) near the supporting convex portions 25a, 25b, 25c of the disc tray 20 is a surface inclined in one direction so as to project in the lateral direction. With inclined guides 27a, 27b, 27
c is provided and the inclination guide portions 27a, 27
Insertion openings 28a, 28b, 28c are formed near b, 27c (see also the plan views of FIGS. 2 and 3).

On the bottom side of the disc tray 20, a disc holder 30 as shown in FIGS. 5 and 6 is urged by a spring 37 (FIGS. 2 and 3) in a counterclockwise direction in plan view. The elongated holes 35a, 35b,
It is attached so that it can be rotationally moved by the length of 35c.

The disc holder 30 has a horseshoe-shaped base portion 30A disposed below the bottom surface of the mounting portion 22 of the disc tray 20, and a predetermined angular interval (approximately 120 degrees) between the outer peripheral portion of the base portion 30A. And an elastically bendable substantially L-shaped holding projection 3 provided at three locations.
1, 32, 33, and the holding projection 31,
As shown in FIG. 7, one of them (31) is representative, 32 and 33 face the inside of the mounting portion 22 through the insertion openings 28a, 28b and 28c formed in the disc tray 20. As a result, the pressing portions 31a, 32a, 33a having rounded tips for pressing the upper peripheral portion of the disk D mounted on the mounting portion 22 and the inclined guide portion 27a provided on the disk tray 20 described above. , 27b, 27c are provided with sliding contact protrusions 31b, 32b, 33b.

On the other hand, as shown in FIG. 5, a pushing convex portion 38 is provided on the bottom side of the disc holder 30, and a protrusion 38a is provided on the side peripheral portion of the disc tray 20. 8 supported on a support shaft 26 provided in
The cam surface 41 of the cam gear 40 as shown in FIG. 2 is pushed (see also FIGS. 2 and 3). The cam gear 40 moves back and forth together with the disc tray 20, and meshes with the loading gear 14 when the disc tray 20 is pulled to a predetermined position (see FIG. 3) and is rotated.
As a result, the cam surface 41 is brought into sliding contact with the projection 38 of the pushing convex portion 38, and the disc holder 30 is rotated in the clockwise direction in plan view against the biasing force of the spring 37.

Here, when the disc holder 30 is rotated clockwise, as shown in FIG. 3,
Retaining protrusions 31, 32, 33 of the disc holder 30
Slidable contact protrusions 31b, 32b, 32b provided on the slant guide portion 27a provided on the disc tray 20,
27b and 27c are simultaneously ridden and pushed outward,
The entire character-shaped holding projections 31, 32, 33 are bent toward the outer peripheral side, and the pressing portions 31a, 32a, 33a are drawn from the inside of the mounting portion 22 to the outside.

The CD-R of this embodiment having the above-mentioned structure
In the OM player 10, when the disc tray 20 is projected to the front of the apparatus main body 12 to take the disc attaching / detaching position, when the disc D is placed on the placing portion 22 and slightly pushed, the holding projections 31, 32, The disc D fits into the lower side of the disc 33 as it bends (see FIG. 7), and the disc D is pressed and held by the holding projections 31, 32, and 33.

In this case, as shown in FIG.
The D-ROM player 10 is placed vertically and is placed on the mounting portion 2.
Even if 2 is directed to the side (sideways), since the outer peripheral edge of the disk D is pressed by the holding projections 31, 32, 33, tilting and falling of the disk D are prevented.

Then, in this state, when the disc tray 20 is pulled to a predetermined position in the apparatus main body 12, the disc D is clamped between the turntable (44 in FIG. 10) by the clamp mechanism (48 in FIG. 10). As well as
A cam gear 40 meshes with the loading gear 14 and is rotated, and its cam surface 41 causes the disc holder 3 to rotate.
0 is rotated clockwise, and as described above, the holding projections 31, 32,
Sliding contact protrusions 31b, 32b, 32b provided on 33
Is provided on the disc tray 20 with an inclined guide portion 27
a, 27b, 27c are simultaneously ridden and pushed outward, and the L-shaped holding projections 31, 32, 33 are entirely bent toward the outer peripheral side, and the pressing portions 31a, 32a, 33a are placed on the mounting portion 2.
2 is pulled from the inside to the outside, and the holding projections 31, 32,
The pressing portions 31 a, 32 a, 33 a of 33 are separated from the disc D.

As a result, the disk D is held by the projection 3 for holding.
The information recorded on it is reproduced by being rotated together with the turntable (44) after being released from the restraint by 1, 32, 33.

As described above, in this embodiment, the disc D is selectively pressed according to the position of the disc tray 20 to prevent the disc D from falling off, or the disc D is released from that state so as not to hinder the rotation. As a result, the degree of freedom in installing the CD-ROM player 10 is improved, the personal computer 100 in which the CD-ROM player 10 is installed can be used vertically, and it is possible to effectively use the desk.

It should be noted that the above is merely an example, and it goes without saying that various modifications and improvements can be made to the structure of each part, particularly the structure of the holding projection, the rotation mechanism of the disk holder, and the like.

[0029]

As can be understood from the above description, the disc reproducing apparatus according to the present invention selectively presses the disc in accordance with the position of the disc tray to prevent the disc from falling out, or to release the disc to rotate it. It is possible to increase the degree of freedom in installing the disc playback device, and it is possible to use a personal computer or the like with the disc playback device installed in a vertical position for effective use on the desk. It is possible to achieve excellent practical effects such as the above.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a disc reproducing apparatus according to the present invention in a state of being incorporated in a personal computer.

FIG. 2 is a plan view showing a state where the disc tray of the disc reproducing apparatus of the embodiment is being pulled in.

FIG. 3 is a plan view showing a retracted state of the disc tray of the disc reproducing device of the embodiment.

FIG. 4 is a bottom view of the disc tray of the embodiment.

5A and 5B show a disk holder of an embodiment, FIG. 5A is a plan view and FIG. 5B is a bottom view.

FIG. 6 is a side view showing a cam gear of the embodiment and its peripheral portion.

FIG. 7 is a diagram showing a positional relationship between the disc holder and the disc of the embodiment.

FIG. 8 is a plan view showing a cam gear of the embodiment.

FIG. 9 is a partial perspective view showing an example of a conventional disc reproducing apparatus.

10 is a diagram showing an internal structure of the disc reproducing apparatus shown in FIG.

FIG. 11 is a diagram showing a state in which the disc reproducing apparatus of FIG. 9 is incorporated in a personal computer.

[Explanation of symbols]

 10 CD-ROM Player 12 Device Main Body 14 Loading Gear 20 Disc Tray 22 Mounting Part 24 Opening 27a, 27b, 27c Inclined Guide 30 Disc Holder 30A Bases 31, 32, 33 Holding Protrusion 40 Cam Gear D Disc

Claims (3)

[Claims] 1. A positioning device for positioning a disc and a main body of a device, which is provided with a turntable for rotating the disc, and a clamp means for holding the disc between the turntable and the turntable. And a disk playback position for retracting the disk into the apparatus main body, which has a shallow concave mounting section, and which is arranged in the apparatus main body so as to be able to move forward and backward to project the mounting section forward. A disc tray is provided in addition to a disc tray that can be selectively taken, and a tray drive unit that allows the disc tray to take the disc mounting position and the disc reproducing position, and the disc holder includes a disc tray. An annular or horseshoe-shaped base portion rotatably arranged on the outer side surface or the lower surface side of the mounting portion in And an elastically bendable holding projection that presses the upper peripheral edge of the disk that is projectingly placed on the mounting section, and that the disk tray is pulled to a predetermined position by the disk tray. A disc reproducing apparatus, characterized in that, when the disc is broken, it is rotated to separate the holding projection from the disc. 2. The disk holder is constantly urged by a spring means so as to rotate in the first direction, and is L-shaped elastically bendable at a plurality of locations on the outer periphery of the base portion of the disk holder. When the disc holder is rotated in the second direction against the biasing force of the spring means at a portion corresponding to the holding protrusion of the disc tray. 2. An inclined guide portion that pushes the holding projection in a direction in which the holding projection is separated from the disc is provided in the.
The disc reproducing apparatus described. 3. A disc gear in a second direction against a biasing force of the spring means by a cam gear which is adapted to mesh with a loading gear of the tray driving means when the disc tray is pulled to a predetermined position. 3. The disc reproducing apparatus according to claim 2, wherein the disc reproducing apparatus is adapted to be rotated.