JPH09120615A - Optical disc reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of an optical disc reproducing device equipped with a rotary tray for mounting a plurality of optical discs by contriving the method for mounting the optical disc onto the rotary tray. SOLUTION: The optical disc reproducing device comprises a rotary tray 8 having a plurality of sections 10 for mounting optical disc 4, a spindle 22 for turning the optical disc while chucking, an optical pickup 23 for reproducing the signal from optical disc, and a mechanism 24 for feeding the optical pickup in the radial direction of optical disc. The disc mounting face 11, 12 at each disc mounting section is inclining at a specified angle of 0 deg.-90 deg. and the spindle, the optical pickup and the feeding mechanism thereof are inclining at same angle as the disc mounting face.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel optical disk reproducing device. More specifically, the present invention relates to a technique for reducing the size of an optical disk reproducing apparatus equipped with a rotary tray capable of mounting a plurality of optical disks by devising a method of mounting the optical disks on the rotary tray.

[0002]

2. Description of the Related Art There are a so-called cartridge type and a roulette type optical disc reproducing device in which a plurality of optical discs are housed in a device and a desired optical disc is reproduced at a proper time.

In the cartridge type, a plurality of optical disks are stored in a storage container called a cartridge, the cartridges are mounted on an apparatus, and at the time of reproduction, a desired optical disk is taken out from the cartridge and chucked on a spindle for reproduction. The roulette method is provided with a rotary tray on which a plurality of optical disks are mounted, and the rotary tray is rotated to move a desired optical disk to the position of the spindle to chuck the spindle for reproduction. Is.

[0004]

However, the cartridge system described above has a problem that it is not suitable for downsizing and cost reduction because its mechanism is complicated and the number of parts is large.

The roulette type has a relatively simple mechanism and is suitable for cost reduction. However, the conventional optical disk reproducing apparatus of this type arranges the optical disks on the same plane. In order to avoid interference between the respective optical discs, a space larger than the surface area of all the optical discs to be arranged is indispensable, and there is a limit to reducing the depth and width of the device, and there is a problem that miniaturization is difficult.

Therefore, an object of the present invention is to make it possible to reduce the size, that is, to reduce the depth and width while adopting the so-called roulette system.

[0007]

In order to solve the above-mentioned problems, an optical disk reproducing apparatus of the present invention chucks an optical disk and a rotatable rotary tray having a plurality of disk mounting parts for mounting the optical disk. An optical disc reproducing apparatus comprising: a spindle that rotates in a rotating manner; an optical pickup that reproduces a signal to the optical disc; and a feed mechanism that moves the optical pickup in a radial direction of the optical disc.
The disk mounting surface on which the optical disk of each disk mounting portion is mounted is inclined at a predetermined angle of more than 0 degree and less than 90 degrees with respect to the rotation surface of the rotary tray, and the spindle, the optical pickup, and the optical pickup feed. The mechanism is tilted at the same angle as the tilt angle of the disk mounting surface.

Therefore, in the optical disc reproducing apparatus of the present invention, it is possible to arrange a plurality of optical discs on the rotary tray so as to partially overlap each other when seen in a plan view.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The details of the optical disk reproducing apparatus of the present invention will be described below with reference to the illustrated embodiments.

The optical disk reproducing apparatus 1 is composed of a housing 2 in which required members are arranged and housed.

The base tray 3 is formed in the shape of a tray having a quadrangular outer shape, is slidably supported in the outer casing 2 in the front-rear direction, and a substantially half of it is projected forward from the outer casing 2 (see FIG. 1). 2) and the entire retracted position (see FIG. 4) housed in the outer casing 2 are horizontally moved. Then, at the protruding position, the optical disc 4,
.. are loaded and unloaded, and the optical disk 4 is played back at the retracted position.

The base tray 3 is formed with a circular recess 5 which is open on the upper surface side over substantially the entire area thereof, and an upward step surface 6 is formed at the opening edge of the recess 5. Further, an access notch 7 is formed which is opened at the center of the rear edge of the base tray 3 (the direction of entering the outer casing 2 is the rear and the direction of exiting from the outer casing 2 is the front) and extends forward. Has been done.

A rotary tray 8 having a circular outer shape when viewed in plan is rotatably supported by the base tray 3 with its peripheral portion positioned on the step surface 6 of the base tray 3.
The rotary tray 8 is rotated by a rotary drive mechanism 9 arranged in the recess 5 of the base tray 3.

.. are arranged on the upper surface of the rotary tray 8 with the center of rotation of the rotary tray 8 as the center. The disk mounting portion 10 is formed as a protrusion protruding from the upper surface of the rotary tray 8, and on the upper surface, two disk mounting surfaces 11 and 12 each having a concentric circular shape and opening upward are formed. The larger disc mounting surface 11 is for a 120 mm optical disc, the smaller disc mounting surface 12 is for an 80 mm optical disc, and the disc mounting surface 12 is formed in a concave shape formed in the disc mounting surface 11. Has been done. In addition, each disk mounting portion 1
Disk mounting surfaces 11, 11, ...
.., 12, 12, ... Forming U-shaped access notches 13, 13 ,. Then, these access notches 13, 13, ...
.. is formed to have substantially the same size as the access notch 7. Then, the disk mounting surfaces 11, 11, ...
, 12, 12, ... Are located on a circle 14 (shown by a broken line in FIG. 6) about the rotation center of the rotary tray 8. Further, a bank-shaped protrusion 11a is provided on the outer side of the highest side of the disk mounting surface 11, that is, the side edge near the outer circumference of the rotary tray 8.

Disk mounting surfaces 11, 11, ..., 1
.. are inclined with respect to the rotation surface of the rotary tray 8 in the direction of a tangent line (indicated by a broken line arrow in FIG. 6) tangent to the circle 14 having the center of rotation of the rotary tray 8 as the center. The inclination angle is a predetermined angle greater than 0 degree and less than 90 degrees with respect to the rotation surface of the rotary tray 8.

Each disc mounting portion 10 has a notch 15 formed by cutting out the highest portion thereof, and the lowest portion of the adjacent disc mounting portion 10 is located in the notch 15. ing. Accordingly, the lowest part of the optical disc 4 placed on the disc placing part 10 is located below the highest part of the optical disc 4 placed on the adjacent disc placing part 10.

A mechanical deck base 16 is arranged inside the outer casing 2. A rear end of the mechanical deck base 16 is rotatably supported by a support member 17, and a front end of the mechanical deck base 16 is rotated so as to move in the vertical direction.

A rotary cylinder 18 is arranged in a substantially central portion of the outer casing 2, and a sliding pin 2 provided at a front end of the mechanical deck base 16 is provided in a cam groove 19 formed on a peripheral surface of the rotary cylinder 18.
0 is slidably engaged. Then, by rotating the rotary cylinder 18, the mechanical deck base 16
The sliding pin 20 relatively slides in the cam groove 19 of the rotary cylinder 18, whereby the front end portion of the mechanical deck base 16 is moved in the vertical direction.

A spindle 22 which is rotated by a spindle motor 21 is provided on the upper surface of the portion near the front end of the mechanical deck base 16, and the spindle 22 is mounted on the disk mounting surfaces 11, 11 ,. ...
Is tilted in the same direction and at the same angle.

The optical pickup 23 is a mechanical deck base 1.
The optical pickup 23 and the feed mechanism 24 are arranged on the upper surface of the optical disc 6 so as to be movable in the front-rear direction by the feed mechanism 24.
2, 12, ... Are tilted in the same direction and at the same angle.

Next, the operation of the optical disc reproducing apparatus 1 will be described.

As shown in FIG. 1, with the base tray 3 in the pull-out position pulled out from the front surface of the outer casing 2, the disk mounting surfaces 11, 11, ... Or 1 of the rotary tray 8 are shown.
The optical discs 4, 4, ... Are mounted on the discs 2, 12, .. (Note that the optical disc 4 is of a size to be mounted on the disc mounting surface 11, that is, shown as a 120 mm optical disc. However, the optical disc mounted on the disc mounting surface 12 is an 80 mm optical disc.) At this time, the disk mounting surfaces 11, 11, ... Or 12, 12, ...
The optical disks 4, 4, ... Mounted on the disk are partially overlapped when viewed in a plane, and thus can be arranged in an area smaller than the total area of the entire areas.

Then, the optical disc 4,
The optical discs 4, 4, ... Are reproduced in a state where the base tray 3 on which the discs 4, ... Are arranged is in the retracted position retracted into the outer casing 2 as shown in FIG. . That is, when a reproduction command is issued to a certain optical disc 4 while the base tray 3 is in the retracted position, the rotary tray 8 rotates and the disc mounting portion 10 on which the optical disc 4 is mounted is the most loaded. The access notch 13 and the access notch 7 of the base tray 3 are moved to the rear position.
And the chucked portion at the center of the optical disc 4 is exposed downward and is exposed above the spindle 22.

Since the disk mounting surface 11 is formed with a bank-shaped protrusion 11a at the outermost edge on the highest side thereof, and the disk mounting surface 12 is formed in a concave shape, these It is possible to prevent the position of the optical disc 4 mounted on the disc from being displaced due to rotation of the rotary tray 8 or the like.

Then, the rotary cylinder 18 is rotated and the front end of the mechanical deck base 16 is moved upward, and the spindle 2
2 goes up. Then, the upper surface of the spindle 22 comes into contact with the lower surface of the central portion of the optical disk 4, and the spindle 22 further rises slightly from there, so that the optical disk 4 is lifted from the disk mounting surface 11 or 12, and the spindle 22 Be chucked by.

Then, the optical disc 4 is rotated in accordance with the rotation of the spindle 22, and the optical pickup 23 is moved in the radial direction of the optical disc 4 by the feeding mechanism 24, and the signal of the optical disc 4 is read.

In the optical disc reproducing apparatus 1 shown above, the optical discs 4, 4, ... Are arranged on the rotary tray 8 so that the optical discs 4, 4, ... .. can be arranged in an area smaller than the sum of their total areas, and therefore
The planar shape of the base tray 3 can be reduced, and accordingly, the planar shape of the base tray 3 can also be reduced, which contributes to downsizing of the entire apparatus.

[0028]

As is apparent from the above description, the optical disk reproducing apparatus of the present invention chucks an optical disk with a rotatable rotary tray having a plurality of disk mounting parts for mounting the optical disk. An optical disk reproducing device comprising a rotating spindle, an optical pickup for reproducing a signal to the optical disk, and a feeding mechanism for moving the optical pickup in a radial direction of the optical disk,
The disk mounting surface on which the optical disk of each disk mounting portion is mounted is inclined at a predetermined angle of more than 0 degree and less than 90 degrees with respect to the rotation surface of the rotary tray, and the spindle, the optical pickup, and the optical pickup feed. The mechanism is inclined at the same angle as the inclination angle of the disk mounting surface.

Therefore, in the optical disc reproducing apparatus of the present invention, it is possible to arrange a plurality of optical discs on the rotary tray so as to partially overlap each other when seen in a plan view. Therefore, the optical disk can be arranged in an area smaller than the total area of the entire area, and thus the planar shape of the rotary tray can be made small, and the planar shape of the base tray can be made small accordingly. It is possible to contribute to downsizing of the entire device.

It should be noted that the specific shapes and structures of the respective portions shown in the above-mentioned embodiments are merely examples of the embodiment when the present invention is carried out, and the technical scope of the present invention is thereby obtained. Should not be construed in a limited way.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of an optical disc reproducing apparatus of the present invention, which is a schematic plan view showing a state in which a base tray is pulled out from an outer casing, with a part of the outer casing omitted. Is.

FIG. 2 is a schematic side view showing the state of FIG. 1 with a part of the outer casing omitted.

3 is a schematic sectional view taken along the line III-III in FIG.

FIG. 4 is a schematic plan view showing a state where the base tray is pulled into the outer casing and the optical disc is chucked by the spindle, with a part of the outer casing being omitted.

5 is a schematic enlarged cross-sectional view taken along the line VV of FIG.

FIG. 6 is a plan view of a carousel.

FIG. 7 is a side view of a carousel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 optical disk reproducing device 4 optical disk 8 carousel 10 disk mounting portion 11, 12 disk mounting surface 15 notch 22 spindle 23 optical pickup 24 optical pickup feeding mechanism

Claims (4)

[Claims] 1. A rotatable rotary tray having a plurality of disc mounting portions for mounting optical discs, a spindle for chucking and rotating the optical discs, an optical pickup and an optical pickup for reproducing signals from the optical discs. An optical disk reproducing apparatus having a feed mechanism for moving the optical disk in the radial direction of the optical disk, wherein the disk mounting surface on which the optical disk of each disk mounting portion is mounted is greater than 0 degree and 90 degrees with respect to the rotation surface of the rotary tray. An optical disc reproducing apparatus, wherein the spindle, the optical pickup, and the feed mechanism of the optical pickup are inclined at the same angle as the inclination angle of the disc mounting surface. 2. A portion of the disc mounting portion where the highest portion of the disc mounting surface is located is cut out so that the lowest portion of the disc mounting surface of the disc mounting portion adjacent below the notch portion is located. The optical disk reproducing apparatus according to claim 1, wherein the optical disk reproducing apparatus is configured as described above. 3. The disk mounting portion is arranged so that the center of the disk mounting surface is located on a circumference centered on the rotation center of the rotary tray, and the disk mounting surface is in contact with the circumference at the center. The optical disk reproducing apparatus according to claim 1, wherein the optical disk reproducing apparatus is inclined in a tangential direction. 4. The disk mounting portion is arranged so that the center of the disk mounting surface is located on a circumference centered on the rotation center of the rotary tray, and the disk mounting surface is in contact with the circumference at the center. The optical disk reproducing device according to claim 2, wherein the optical disk reproducing device is inclined in a tangential direction.