JPH0388170A - Multi-disk player - Google Patents

Abstract

PURPOSE:To exchange a disk in the midst of reproducing by providing a notching which reaches an outer periphery on a disk tray so that a disk may be lifted from the disk tray and clamped, and then moved on a slide table. CONSTITUTION:The notchings 5h which reach the outer periphery from respec tive recessed parts are formed on the disk tray 5. Due to the notchings, the slide table 2 is allowed to protrude to the outside of a front panel by operating a switch even in the midst of reproducing the disk. In such a state, the disk tray 5 is controlled and driven to be rotated to a specified position and a photo detector 10a is used at that time. The angle of circumference alpha of the photodetectors 10a and 10b is 36 deg. and the stop positions of the tray 5 inside and outside the housing are deviated from each other by 1/2 pitch. When the table 2 is allowed to protrude in a state where the disk in the recessed part 5a is played, the tray 5 stops at a position where the recessed parts 5b and 5c are exposed, thereby enabling exchanging or inserting the disk at the position where they are exposed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a multi-disc player that can select and play any disc from a plurality of discs stored therein.
In particular, the present invention relates to a multi-disc player that allows the stored discs to be exchanged even during a performance.

[Prior Art] A multi-disc player in which a rotating disc-shaped disc tray is provided on a slide table to facilitate disc replacement has been proposed in Japanese Patent Laid-Open No. 192064/1983.

The multi-disc player described in the same publication has a disc tray rotatably mounted on a slide table that moves in and out of the housing, and when the slide table is inside the housing, a disc stored in the disc tray is selected and played. When storing a disc in the tray or replacing a disc, the slide table is made to protrude from the housing and the disc tray is rotated to a predetermined position.

[Problems to be Solved by the Invention] In the conventional multi-disc player, it is impossible to project the slide table out of the housing while a disc is being played, and it is not possible to set the next disc to be played. .

By the way, it takes a considerable amount of time to play a single optical disc, and even while listening to the performance, it is easy to think of the next song you want to listen to.

At that time, with conventional devices, it is not possible to set the disc while listening to the performance as described above, so you have to wait until the performance of the disc is finished, or stop the performance once, and then insert the disc.
I had to operate the slide table to set the disc I wanted to play.

This invention was made in order to solve the above problems, and it is possible to store any disc in the disc tray by making the slide table protrude outside the casing even while the disc is being played, and to store the disc in the disc tray. To provide a multi-disc player that can be exchanged and programmed to play the exchanged disk as soon as the performance is finished.

[Means for Solving the Problems] The present invention rotatably supports a disk tray on a slide table, on which a plurality of disks are placed in recesses formed at equal intervals on the same circumference, and the disks are placed on the slide table. A drive device is provided to rotate the tray to a predetermined position, and a slide table is placed in a position where the disc can be clamped by a disc playback device disposed within the housing, and a position where the one or more recesses protrude from the front panel. In a multi-disc player, the turntable of the disc playback device lifts the disc from the disc tray and clamps it, and in this state, a cut is made in the disc tray that extends to the outer periphery so that the slide table can be moved. A notch is provided to allow discs to be replaced even while the disc is being played.

[Function] During performance, the disc is lifted from the disc tray by the turntable, and the shaft of the spindle motor passes through a notch provided in the disc tray, allowing the disc tray to move together with the slide table.

If the disc tray is moved to a position where the axis of the spindle motor is removed from the outer periphery of the disc tray, the disc tray can be rotated without being interfered with by the disc playback device.

The portion of the disc tray that protrudes from the front panel can be used to exchange or store discs, and then it can be programmed to play.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a multi-disc player according to an embodiment of the invention.

In the figure, 2 is a slide table.

The slide table 2 is slidably supported by the chassis 1, and has a rack 2a erected on its back surface.

A gear 3 that meshes with the rack 2a is rotatably supported by the chassis 1, and rotates by being driven by a drive device (not shown) to move the slide table 2 between the position I shown by the solid line and the position shown by the two-dot chain line. move between.

5 is a disk tray, which is rotatably supported by a shaft 4 and rollers 6, 6, . . . provided on the slide table 2.

A gear 5g is provided upright on the back surface of the disc tray 5.

A gear 9 that meshes with the gear 5g is rotatably supported by the slide table 2, and is driven by a drive device (not shown) to rotate the disk tray 5.

A rib 5f extends downward on the outer periphery of the disk tray 5, and a slit is provided in the rib 5f as shown in FIG. 4.

10a and 10b are photodetectors in which a light emitting element and a light receiving element are arranged so as to sandwich the rib 5f, and are fixed to the slide table 2.

The photodetector 10a or 10b detects the slit in the rib 5f, and the control device stops the motor that drives the gear 9, but at the same time, a positioning device (not shown) operates to stop the disk tray 5 at a predetermined position.

Disc tray 5 has 8 cxa CDs and 12am
A stepped recess 5a allows the CD to be positioned and placed.
Five pieces 5e to 5e are formed at equal intervals.

At the position where the slide table 2 protrudes from the front panel 8, the disc tray 5 has two recesses.
exposed outside.

Further, the disc tray 5 is formed with a notch 5h extending from each recess to the outer periphery.

A slide table 2 is inside the housing, and a disk tray 5
A disc playback device 7 is arranged in the chassis 1 so that it can play back the disc placed on the disc tray 5 when the disc stops at a predetermined position.

A photodetector 11 that detects the presence or absence of a disc placed on the disc tray 5 is arranged to sandwich the disc tray 5.

As shown in FIG. 2, the disc playback device 7 includes a turntable 20 and an optical pickup 21 that are directly connected to a spindle motor shaft, and a shaft 22 erected on the disc playback device 7 is fixed to the chassis 1. It fits into a bearing 23 and is rotatably supported by the chassis 1.

In addition, the optical pickup 21 and the disc playback device 7
It is sent in the left and right direction by a feed mechanism provided on the body of the machine.

A guide pin 24.24 is erected on the front surface of the disc playback device 7, and the guide pin 24.24 is connected to a two-shaped guide groove 25 formed in the slider 25 as shown in FIG.
a, it is inserted into 25a.

The slider 25 is slidably supported by the chassis 1, and a rack 25a formed integrally with the slider 25 meshes with a gear 26.

The gear 26 is rotatably supported by the chassis 1 and meshes with a gear formed on a worm wheel 27 which is also supported by the chassis 1.

The worm wheel 27 meshes with a worm 28 that is directly connected to a motor 29 fixed to the chassis 1.

By rotating the motor 29 in the normal or reverse direction, the body of the disc playback device 7 can be rotated, and the turntable 20 can be moved between the raised position shown by the solid line and the lowered position shown by the two-dot chain line.

The end point of movement of the slide table 25 is detected by a microswitch (not shown), and the control device stops the motor 29 in response to a signal sent from the microswitch.

When the turntable 20 rises to the position shown by the solid line, the turntable 20 lifts up the disk 32 placed on the disk tray 5, and the clamper 31 supported by the bracket 30 fixed to the chassis 1 moves the disk 32 up.
is clamped to the turntable 20, and the disc is in playback mode.

The embodiment is configured as described above, and its operation will be explained next.

When the slide table 2 is inside the housing, operate the switch on the operation panel (not shown) to open the disk tray 5.
A maximum of five discs placed on the disc can be programmed to play in any order, and the discs can be played according to the program.

At this time, the rotation of the disc tray 5 is controlled by the photodetector 10b.

That is, by inputting a signal from the photodetector 11 at the timing when edge A of the rib shown in FIG. 4 is detected, it is determined whether or not there is a disk in the corresponding recessed portion, and the control device stores this information.

Then, depending on the number of slits in part B, it is determined which of the first to fifth recesses it is.

The drive device is stopped at the position of the corresponding number 0 slit, but the motor is decelerated at the edge D before that.

When the disc tray 5 stops at a position where a predetermined disc is to be played, the disc playback device 7 is raised and the disc is played, but the control device does not remember which recess the disc is placed in. are doing.

Even during disk playback, the slide table 2 can be made to protrude outside the front panel by operating a switch.

In this state, the disc tray is controlled and rotated to a predetermined position, but at that time, the photodetector 1
0a is used.

The circumferential angle (α in the figure) between the photodetector 10a and the photodetector 10b is 36°, and as shown in the figure, the stopping positions of the disk tray 5 inside and outside the housing are shifted by 1/2 pitch from each other. As shown in the figure, when the slide table 2 is protruded while playing a disc in the recessed part 5a, the disc tray 5 stops at a position exposing the recessed parts 5b and 5c, and the exposed part is used to play the disc. It can be replaced or inserted.

Further, by operating a switch, the disc tray can be rotated to expose the recesses 5d and 5e.

However, it is controlled so that the concave portion 5a does not stop in an exposed state.

When the slide table is pulled into the housing, the disc tray has been rotated to a position where the recess 5a is above the disc playback device.

By controlling the rotation of the disc tray 5 in this manner, interference between the disc playback device being played and the disc placed on the disc tray is prevented.

Note that when the disc is not clamped to the disc playback device, the stopping position of the disc tray is not limited.

[Effects of the Invention] As described above, according to the disc player of the present invention, it is possible to exchange a disc other than the disc being played even during disc playback.

Further, as shown in the embodiment, by controlling the rotation of the disc tray, it is possible to prevent troubles caused by accidentally placing a disc in the disc storage section during playback.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a multi-disc player that is an embodiment of the present invention, FIG. 2 is a front view showing a disc playback device of the multi-disc player, and FIG. 3 is a view taken along the line A-A in FIG. 2. FIG. 4 is an exploded side view showing a part of the rib 5f of the disc tray 5 of the multi-disc player. 1... Chassis, 2... Slide table, 2a.
...Rack, 3...Gear, 4...Shaft, 5...Disk tray, 5a, 5b, 5c, 5d, 5e---Concave portion, 5f...Rib, 5g...Gear, 5h...notch, 6...roller, 7...disc playback device, 8...
...Front panel, 9...Gear, 10a, 10b,
DESCRIPTION OF SYMBOLS 11... Photodetector, 20... Turntable, 21... Optical pickup, 22... Axis, 2
3... Bearing, 24... Guide bin, 25... Slider, 25a... Rack, 25b... Guide groove, 26... Gear, 27... Worm wheel, 28... Worm , 29...Motor, 30...Blaget, 1...Clamper, 32...Disc.

Claims (1)

[Claims] A disk tray for placing a plurality of disks in recesses formed at equal intervals on the same circumference is rotatably supported on a slide table, a drive device is provided on the slide table to rotate the disk tray to a predetermined position, and a drive device is provided on the slide table to rotate the disk tray to a predetermined position. A multi-disc player in which a table is driven between a position in which a disc reproducing device disposed in a housing places a disc in a clampable position and a position in which one or more of the recesses protrudes from a front panel. In this system, the turntable of the disc playback device lifts the disc from the disc tray and clamps it, and in this state, the disc tray has a notch extending all the way to its outer periphery so that the slide table can be moved, making it possible to change the disc even while the disc is being played. A multi-disc player characterized by the following.