JPH02260280A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To prevent deformation due to dislocation of an optical disk at the time of clamping the disk by making width of a groove at an engaging part of a guide lever with an optical disk in data reproducing position larger than width of a groove provided on a disk storage case. CONSTITUTION:The guide lever 11 is for guiding an optical disk 2 lifted up from the disk storage case 1 by a lift lever 5 to a prescribed data reproducing position, and is supported by a shaft 12 fixed with both ends to a housing of a disk reproducing unit 3, so as to be capable of performing a prescribed revolving operation. Then, as to the guide lever 11, the width of its groove 11a on the side of approaching the disk storage case 1 is about the same as the groove width provided on the disk storage case 1, while the width of its groove 11b at the engaging part with the optical disk 2 situated in the data reproducing position is made larger than the groove width of the disk storage case 1. Then, a distant part between these different wide grooves is tapered. By this method, deformation due to dislocation of an optical disk at the time of clamping the disk is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a disc playback device with an autochanger that plays back data from an optical disc.

(Prior Art) In recent years, various types of disc reproducing apparatuses with autochangers have been developed that select a desired optical disc from a disc holder containing a plurality of discs and reproduce data from the optical disc.

As one example, recently, a plurality of optical discs are stored vertically in a disc holder with a groove that follows the outer shape of the disc, and the desired optical disc is pushed upward from the holder using a lever and placed at a predetermined data playback position. A system is being developed that reproduces data from an optical disc by transmitting data to the optical disc.

In such devices, a guide lever is provided for the purpose of taking over the optical disc from the disc storage device and guiding it accurately to the data playback position. is provided.

The optical disc transported to the data reproduction position is then held between the disc table and the clamper and driven and reproduced.

(Problem to be Solved by the Invention) However, at this time, as shown in FIG.
As shown in the figure and FIG. 10, if the timings of the disc table 23 and the clamper 22 do not match, the position of the optical disc 21 will momentarily shift. Particularly in the case of large-diameter optical discs such as laser discs, such situations often occur.

When the positional deviation of the optical disc occurs in this manner, there is a problem in that the optical disc collides with the inner wall of the groove of the guide lever, and in the worst case, the optical disc is deformed.

The present invention has been made to solve these problems, and aims to provide a disc playback device that can prevent deformation due to misalignment of an optical disc during disc clamping.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the disc playback device of the present invention has an outer shape of an optical disc for storing a plurality of optical discs at predetermined intervals. a disk storage device having a plurality of grooves along the disk storage device; a lift lever for transporting a desired optical disk from the disk storage device along the grooves to a predetermined data playback position; and a lift lever that is continuous with the groove provided in the disk storage device. A guide lever that has a groove and guides the optical disk taken out by a lift lever to a data playback position along the groove, and a guide lever that grips the center hole of the optical disk carried to the data playback position and drives the optical disk to rotate. In a disc playback device equipped with a disc drive playback system mechanical unit that plays back data while giving
It is characterized in that the groove width of the engaging portion with the optical disk at the data reproduction position is larger than at least the width of the groove provided in the disk storage device.

(Function) In the disc playback device of the present invention, the groove width of the engagement portion of the guide lever with the optical disc located at the data playback position is set to be at least wider than the width of the groove provided in the disc storage device. , even if the timing of the operation between the disc table and the clamper when clamping an optical disc is misaligned, and the optical disc is momentarily misaligned, the risk of collision with the first disc or the inner wall of the groove provided in the guide lever is greatly reduced. deformation of the optical disc can be prevented.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is an overall perspective view showing a disc playback device according to an embodiment of the present invention.

In the figure, reference numeral 1 denotes a disk storage device for storing a plurality of double-sided playback type optical disks (hereinafter simply referred to as optical disks) 2, each having data recorded on both sides, stacked vertically at a predetermined interval. It is. This disk storage container 1 has a plurality of arcuate grooves along the outer shape of the optical disks 2 at its bottom so that each optical disk 2 can be supported in a vertically removable manner.

A disk playback unit 3 is disposed above the disk storage 1 in which a plurality of optical disks 2 are stored, for taking out a desired optical disk 2 from the disk storage 1 and reproducing data on the optical disk 2. .

This disc reproducing unit 3 is formed by integrating the various components described below so that the entire unit can be moved in the direction of the arrangement of optical discs along a guide shaft 4 fixed at both ends in a casing (not shown).

That is, this disc reproducing unit 3 is equipped with a lift lever 5 for lifting a desired optical disc 2 from the disc storage 1 to a predetermined height (data reproducing position).

This lift lever 5 is rotatably attached to the above-mentioned guide shaft 4 as an axis, and a roller 6 that rolls into contact with the circumferential edge of the optical disk 2 is attached to its tip.

In this embodiment, the lift lever 5 has a substantially "<" shape, and rollers 6 are attached to both ends of the lift lever 5, so that it can be used not only to push up the optical disc 2 but also to return the optical disc 2 to its original position in the disc storage container 1. It is configured to be reliably swallowed into the groove when stored.

The optical disc 2 lifted from the disc storage 1 along the groove by the lift lever 5 is further moved to the data playback position along a groove provided in a guide lever (see FIG. 2) described later in the disc playback unit 3. It is designed to be carried up to

In addition, in this disc playback unit 3, the optical disc 2
A pickup head for reading out data recorded on the optical disc 2 using a laser beam engages with the center hole of the optical disc 2,
A disk table 7 cooperates with a clamper (not shown) to provide rotational drive to the optical disk 2, a disk drive motor 8 serves as a drive source for the disk table 7, a disk drive motor 8 serves as a drive source for the disk table 7, and a disk drive motor 8 serves as a drive source for the optical disk 2. A single mechanical chassis 9 is equipped with a tilt mechanism that allows the head surfaces of the pickup head to face each other on two sides.

However, this mechanical chassis 9 is tilted at a predetermined angle with respect to the optical disk surface so that the disk table 7 is in a position deviated from its normal position until the optical disk 2 is finally transported to the data reproduction position. When the optical disc 2 is carried to the above-mentioned data reproduction position,
The cam machine t1'? is used so that the disc table 7 reaches the correct position. It is controlled by a chassis movement control system that makes full use of .

Further, this mechanical chassis 9 has a pair of U-shaped discs arranged so as to straddle the optical disc 2 set at the data reproduction position.
It is supported at two points by the U-shaped guide rails 10a, 10b, and by moving the mechanical chassis 9 along the U-shaped guide rails 10a, 10b, the playback can be switched from one side of the optical disc 2 to the other side. It is about to take place.

FIG. 2 is a side view showing the relationship between the disk storage container 1 and the guide lever described above.

In this figure, 11 indicates a guide lever. As described above, this guide lever 11 is for guiding the optical disc 2 lifted from the disc storage device 1 by the lift lever 5 to a predetermined data playback position, and is fixed at both ends to the casing of the disc playback unit 3. It is supported by a shaft 12 that allows predetermined rotational movement.

Further, in this guide lever 11, the width of the groove 11a on the side adjacent to the disc storage device 1 is approximately equal to the groove width provided in the disc storage device 1, and corresponds to the engagement portion with the optical disc 2 located at the data reproduction position. The width of the groove 11b is set wider than the groove width of the disk storage device 1 in consideration of positional deviation when the optical disk 2 is held between the clamper and the disk table 7. And there is a taper in between.

Next, the operation when transporting the optical disc 2 stored in the disc storage device 1 to the data reproduction position will be explained using FIGS. 3 to 7.

While the optical disc 2 is being selected, the lift lever 5 is in a state in which it holds the optical disc 2 stored in the disc storage device 1 with a gap, as shown in FIG.

When the optical disc 2 to be played is determined, as shown in FIG. 4, the lift lever 5 is rotated in the direction indicated by the arrow in the figure, thereby lifting the optical disc 2 upward along the groove provided in the disc storage container 1. It will be done.

As shown in FIG. 5, when the optical disc 2 reaches the data reproduction position, the optical disc 2 is clamped between the clamper 13 and the disc table 7, as shown in FIG.

At this time, there is a possibility that the timing of the operation of the clamper 13 that clamps the optical disc 2 and the disc table 7 is different, and the position of the optical disc 2 is shifted. Since the groove width of the engagement part with the optical disc 2 is made wide,
The risk that the optical disc 2 will collide with the inner wall of the groove of the guide rail 11 and be deformed is reduced.

After the optical disc 2 is clamped, the lift lever 5 and the guide lever 11 are moved away from the outer periphery of the optical disc 2, as shown in FIG.

As a result, the data reproducing operation for the optical disc 2 is started.

Thus, according to the disc playback device of this embodiment, the groove width corresponding to the engagement portion of the guide lever 11 with the optical disc 2 at the data playback position is at least wider than the width of the groove provided in the disc storage device 1. Therefore, even if there is a momentary positional shift of the optical disc 2 when the optical disc 2 is clamped, the probability that the optical disc 2 will collide with the inner wall of the groove of the guide lever 11 is significantly reduced, and the deformation of the optical disc 2 can be prevented. I can do it.

[Effects of the Invention] As explained above, according to the disc reproducing apparatus of the present invention, deformation due to positional deviation of the optical disc during disc clamping can be prevented.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view showing a disc playback device according to an embodiment of the present invention, FIG. 2 is a side view showing the relationship between a disc storage device and a guide lever in the same disc playback device, and FIGS. The figures are a side view to explain the operation of transporting the optical disk stored in the disk storage device to the data playback position, FIG. 8 is a side view showing the normal operation timing of the disk table and the clamper, and FIG. and FIG. 10 are side views showing the operation timings of the disc table and the clamper when misalignment of the optical disc occurs. Yu...disc storage container, 2...optical disc, 5...
・Lift lever 7...Disc table, 11...
Guide lever 13... Clamper. Applicant: Toshiba Corporation

Claims (2)

[Claims] (1) A disk storage device having a plurality of grooves along the outer shape of the optical disks for storing a plurality of optical disks at predetermined intervals, and a desired optical disk from the disk storage device along the grooves. a lift lever for transporting the optical disc to the data playback position; and a guide having a groove that is continuous with a groove provided in the disc storage container, and that guides the optical disc taken out by the lift lever to the data playback position along the groove. In a disc playback device comprising a lever, and a disc drive playback system mechanical unit that plays back data while pinching the center hole of the optical disc that has been carried to the data playback position and providing rotational drive to the optical disc, the guide lever A disc reproducing device characterized in that the width of the groove corresponding to the engaging portion with the optical disc located at the data reproducing position is at least larger than the width of the groove provided in the disc storage device. (2) In the disc reproducing apparatus according to claim 1, the lift lever and the guide lever are each moved in a direction away from the outer periphery of the optical disc during a data reproducing operation on the optical disc. Device.