JPH02260274A - Disk reproducing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a disc playback device.

(Prior Art) As a disc playback device, such as an autochanger laser disc player, the one shown in FIG. 3 is known. As shown in the figure, a large number of disks 1 on standby are arranged horizontally and spaced apart from each other by a predetermined distance X.

When playing, a predetermined single disc 1a is selected from a large number of waiting discs 1 (FIG. 3(a)) by a disc transport mechanism (not shown) and pulled out in the horizontal direction (direction A in the diagram). (FIG. 3(b)) and is transported to a predetermined position above the spindle motor 2 (FIG. 3(C)).

Here, the disc 1a placed at this predetermined performance position
and the standby disk 1b do not overlap.

Then, the clamper 3 is lowered and comes into contact with the central portion of the disk 1a, and is further lowered to move the disk 1a downward (in the direction B in the figure) by a predetermined distance y. As a result, the clamper 3 cooperates with the spindle motor 2 to clamp the disk 1a (FIG. 3(d)).

(Problem to be Solved by the Invention) However, in the conventional autochanger laser disc player as described above, the disc 1a placed at the playing position is completely pulled out to a position where it does not overlap with the waiting disc ib. Therefore, a large space was needed. That is,
A space more than twice the diameter of the disk 1 was required in the direction of movement of the disk 1.

In addition, when clamping the disk 1a, the disk 1a itself is lowered by a distance lll1y, and since the data surface of the disk is provided in a horizontal position, the outer circumference of the disk is bent by a distance 2 due to gravity. In order to deal with this, a predetermined distance X as the interval between each waiting disk is
It was necessary to provide a margin of distance y minutes or distance 2 minutes.

The present invention was made to solve such problems,
The purpose is to provide a disc playback device that can be miniaturized.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the present invention selects a predetermined disc from among a plurality of waiting discs, transports it to a predetermined performance position, and plays the disc. The disc playback device has a disc loading means in which the disc transported to the performance position overlaps the disc in standby during performance, and the predetermined disc is placed on both sides of the disc at the performance position of the disc loading means. A disc rotation means for rotating the disc at a predetermined speed and a clamper for clamping the disc at the performance position in cooperation with the rotation means are arranged to face each other, The disc rotating means and the clamper are moved in the direction of the discs to clamp the discs in a performance state in which the discs overlap.

(Function) In the present invention, since the disc loaded to the performance position and the disc waiting are overlapped by the disc loading means, the overlapping space can be used effectively.

Furthermore, since the disc rotation means and the clamper are moved in the direction of the disc and the disc is clamped, the disc is no longer moved at the playing position;
It becomes possible to narrow the interval between each disk on standby.

(Embodiment) Hereinafter, an autochanger laser disc player according to an embodiment of the disc playback device of the present invention will be described with reference to the drawings.

As shown in FIG. 1, a large number of disks 4 on standby are
They are arranged vertically and spaced apart from each other by a predetermined pressure ad. Each of these discs 4 is selectively moved in the vertical direction (direction C in the figure) by a disc loading mechanism (not shown) and loaded to a predetermined performance position. The disc 4a placed at this playing position overlaps the waiting disc 4b by the maximum distance.

On both sides of the disc at the predetermined performance position are spindle motors 5 for rotating the disc 4 at a predetermined speed.
and a clamper 6 for clamping the disc 4 at the playing position in cooperation with the spindle motor 5 are arranged to face each other. The spindle motor 5 has a rotating shaft in a direction perpendicular to the disk 4 (in the direction shown in the figure).

These spindle motor 5 and clamper 6 are moved in the direction of the disk (in the direction in the figure) by a drive mechanism (not shown).

Next, the operation of this autochanger laser disc player will be explained.

Among the many discs 4 on standby (Fig. 1(a))
, a desired disk 4a is selected by a disk loading mechanism (not shown) and moved in the vertical direction (C in the figure).
direction) (FIG. 1(b)), and is loaded to a predetermined performance position (FIG. 1(C)). The disc 4a placed at the predetermined performance position and the disc 4b on standby overlap each other by the maximum distance, as shown in FIG. This distance is set, for example, to a value of 1/2 of the radius of the disk.

Then, the spindle motor 5 and the clamper 6 are moved toward each other in the direction of the disk (in the downward direction in the figure) by a drive mechanism (not shown). As a result, the clamper 6 cooperates with the spindle motor 5 to clamp the disc 4a at the playing position (FIG. 1(d)).

Thereafter, the spindle motor 5 is rotated at a predetermined rotational speed, and a data reading mechanism (not shown) reads data from the data surface of the disc 4a and performs the performance.

As described above, in the autochanger laser disc player of this embodiment, the disc 4a is placed at a predetermined position for playing, and the disc 4b is in standby.
Since the two overlap, the space can be reduced by the amount of overlap. That is, it is no longer necessary to take up a space that is twice the diameter of the disk 4 or more in the direction of movement of the disk 4. Further, when the disk 4a is clamped, the disk 4a itself does not change its initial position when pulled out, so that the size of each disk can be reduced by the distance y shown in FIG. Furthermore, since each disk is provided in a vertical position, the outer periphery of the disk does not bend due to gravity, so that the size of each disk can be reduced by two distances shown in FIG. 3.

[Effects of the Invention] As described in detail above, according to the present invention, since the disc placed at a predetermined position for playing and the disc in standby overlap, the space can be reduced by the amount of overlap.

Further, when the disk is clamped, the disk itself does not change its original position when pulled out, so the size of each disk can be reduced by the distance y shown in FIG. Therefore, it is possible to provide a disc playback device that can be miniaturized.

[Brief explanation of drawings]

Fig. 1 is a front view showing an autochanger laser disc player according to an embodiment of the present invention, Fig. 2 is a side view of the autochanger laser disc player shown in Fig. 1, and Fig. 3 is a conventional autochanger laser disc player. 4 is a side view of the autochanger laser disc player shown in FIG. 3; FIG. 4...Disk, 5...Spindle motor, 6...
Khufu/Ha Applicant: Toshiba Corporation

Claims (1)

[Claims] (1) In a disc playback device that selects a predetermined disc from among a plurality of discs on standby, transports it to a predetermined performance position, and performs the performance, the disc that has been transported to the performance position and the disc that is on standby during playback. have overlapping disc loading means, and on either side of the disc in the playing position of the disc loading means, a disc rotating means for rotating said predetermined disc at a predetermined speed, and said disc in cooperation with said rotating means. and a clamper for clamping the disc at the playing position, and in a playing state in which the playing disc overlaps the waiting disc, the disc rotating means and the clamper are moved in the disc direction. 1. A disc playback device that clamps the disc by moving the disc.