JPS62192063A - Multi-disk player - Google Patents

Abstract

PURPOSE:To load and reproduce a disk with a simple operation by providing a means to detect the presence of the disk mounted on a rotating disk tray. CONSTITUTION:A sliding table 3 to mount a rotating disk tray 4 can be freely slid in a chassis part 1. In disk storing parts 4A- on the tray 4, a disk is mounted and inserted into the chassis part 1, the tray 4 starts the rotation with a motor 5. The presence of the disk of the storing part 4A which comes to a reproducing device having a chucking head 6 are detected. When the disk is not detected, the storing part 4A is skipped. On the other hand, when it is detected, the rotation is stopped at the place, and the disk is reproduced by a disk reproducing block 7. Thus, the disk is loaded and reproduced with simple operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multi-disc player that can reproduce one or more rotating recording media continuously or in program order.

[Summary of the invention]

The multi-disc player of the present invention includes a rotating disc tray that can accommodate a plurality of discs mounted on a sliding drawer member, and one or more discs accommodated in the rotating disc tray. It is configured so that it can be detected by a single photodetector and reproduced automatically or according to a program based on the detected signal. Therefore, a desired plurality of discs can be stored in the player, the playback capability is greatly improved, and the device can be made smaller by employing a rotating disc tray.

[Conventional technology]

2. Description of the Related Art Some playback devices, such as record players and compact discs, are configured such that a plurality of disks are set in advance in the player device, and any number of songs can be played by an external operation.

[Problem that the invention seeks to solve]

However, since the player (music box) with such a changer function was originally intended to accommodate a large number of dozens of soft discs, the device is large and expensive, making it difficult for general users to use. At the same time, there is the problem that it is difficult to play the desired CD, and even for devices that use compact discs (CDs) as music software, a package to accommodate several CDs is required, making it difficult to play the desired CD. There is a problem in that the changer mechanism and handling become complicated.

This invention was made in view of this problem, and allows you to play multiple discs in succession by a simple operation similar to that seen in a player that plays a single disc.
Alternatively, a small multi-disc player that can be played according to a program is provided.

[Means for solving problems]

Similar to a conventional disk or record drive mechanism, there is a slide table on which a disk can be placed 21 and pulled into the housing, and a plurality of disks are arranged on the top surface and stored on the slide table. a rotating disk tray capable of rotating, a disk detection device capable of detecting and displaying the presence or absence of a disk placed on the rotating disk tray, and a drive for pulling the sliding table and chucking it at a predetermined position. The brush is provided with a device, a rotation mechanism that rotates the rotary disk tray in accordance with an operation mode and moves it to a chucking position, and a pickup mechanism that can reproduce recorded signals on the disk.

[Effect]

Equipped with a rotating disk tray driven by a rotation control device that rotates to a predetermined position and stops at that point on the top of the slide table that pulls the disk into the housing.
Since the presence or absence of a disc placed on this rotating disc is detected, the disc is loaded and played using operations similar to those found in a normal disc playback device, and at the same time the disc placed on the rotating disc tray is detected. You can easily play along with the program.

〔Example〕

FIG. 1 is an explanatory diagram showing an outline of the multi-disc player of the present invention, where 1 is a part of the chassis of the multi-disc player, 2 is a front panel, and 3 is a slide table that goes in and out from the front opening of the front panel 2. .

As shown by the solid line, this slide table 3 has a circular rotary disk tray 4 mounted on the concave surface of the slide table 3, and the top surface of the tray 4 is arranged so that, for example, five compact disks can be placed thereon. Concave disk storage portions 4A, 4A, . . . are formed. Adjacent portions of the disc storage units 4A, 4A, . . . are connected to a circuit 4B so that the placed discs can be easily taken out.

4B... are alternately connected, and the chucking table of the spindle motor protrudes from the center part.
As will be described later, openings 4C, 4C, . Note that 4D, 4D, . . . are four parts useful when rotating the rotary disk tray 4 manually.

Reference numeral 5 denotes a rotary motor for rotating the rotary disk tray 4, which is attached to the bottom surface of the slide table 3. This part includes a rotation detector for the rotary disk tray 4, a positioning member, and a positioning member as described later. One disc detector is provided which can detect the presence or absence of a disc. A chucking head 6 is fixed to the slide table 3, and the lower side of the chucking head 6 is designated as the playback position.

7 is a separate drawing of a disc playback block placed on the bottom surface of the chassis part 1. Inside this disc playback block 7, there is a disc playback block 7 that is raised upward by a loading mechanism 9 provided on the chassis. A driven optical block 8 is installed inside.

Reference numeral 10 indicates an electronic circuit board fixed to the upper surface of the chassis part 1 via a support plate.

FIGS. 2 and 3 show a retracting device for a slide table 3, a rotating mechanism for a rotary disk tray 4, and
and a plan view (partially cut away) and an exploded perspective view for explaining the drive mechanism of the disc playback block 7,
The same parts as in FIG. 1 are designated by the same reference numerals.

In these figures, in particular, the slide table 3 shown in FIG. A rack 13 is provided which fits with a loading gear 20 which will be described later. (A part is shown by a solid line.) In the stored state shown in FIG. It matches with the floats 4E engraved around it.

14 is a rotation stopper operated by a plunger (not shown), 15A and 15B are microswitches for detecting the rotational position of the rotating disk tray 4, and 16 is a photoelectric detector for detecting the presence or absence of a disk. 3, the position of the rotating disc tray 4 is detected and set as described later, and information indicating the presence or absence of a disc detected by the disc detector is stored in the CPU in the player or displayed on the panel surface. I am trying to make it visible.

The loading gear 20 is rotatably supported on the chassis part 1, as shown in particular in FIG. 2, and includes reduction gears 21, 22, a belt 23. Pulley 24. The rotation is controlled by the loading motor 25 as described later.

Then, as described above, the rack 13 on the lower surface of the slide table 3 is driven in the direction of arrow A by the gear 20A carved in the area around the outer periphery of the loading gear 20 to move the slide table 3. The rack 13 is locked by rotating the stopper plate 26 at the half-top portion 20B on the outer periphery.

Further, a spiral cam groove 20C is formed on the lower surface of the loading gear 20, and this cam groove 20C has the following features:
In particular, as clearly shown in FIG. 3, a dowel 32 formed on the sub-chassis 31 for pushing the optical block 8 upwardly fits loosely therein.

1-shaped guide holes 33, 33, 33 are provided on both sides of this sub-chassis 31. Some guide bins 35, 35. (35
) is fitted.

Therefore, when the aforementioned loading gear 20 rotates in the 11ν direction, the rack 13 of the slide table 3 is first pulled into position in the direction of arrow A as shown in FIG. When the stopper plate 26 is released, the stopper plate 26 falls into the semi-top part 20B of the loading gear 20, and the rack plate 13 is fixed by the tip 26A of the stopper plate 26, which is biased by the spring 27.

Then, when the loading gear 20 continues to rotate further, the dowel 32 fitted in the cam groove 20C moves toward the center of the loading gear 20, so that the sub-chassis 31 moves in the direction of arrow B.

At this time, the box 34 located below the sub-chassis 31
The guide pin 35.35 is a single-shaped guide hole 33.33
Since the box 34 is fitted into the auxiliary chassis 31, it is lifted upward along the shape of the guide holes 33, 33, and the entire box 34 rises inside the sub-chassis 31.

Then, the optical block 8 placed in the box 34 protrudes from the upper opening 36 of the sub-chassis 31.

Bearings 37, 37 are provided at several locations on the box 34, passing through the box 34 in the vertical direction, and are supported by slide shafts 38, 38 implanted in the chassis part 1 of the main body.

Therefore, the optical block 8 can only be moved in the vertical direction at a specific position on the chassis part 1.

The optical block 8 is mounted on a feed shaft 41.
41 is fixed, and a two-car mechanism 42 is slidably supported on this feed shaft 41.41, and the feed motor 4
3 is also installed.

A plurality of support members 44 made of an elastic material.
44... is fixed to the bottom surface of the box 34 to add earthquake resistance.

Note that a spindle motor 45 and a turntable 46 including a disk, which will be described later, are also included in the mechanical deck 40.
Although these are attached to the box 34, they may be fixed directly to the box 34.

4 and 5 show a cross-sectional view and a part of the back view of the rotating disk tray 4, and the cross-sectional view in FIG. 4 is centered on the state cut along the xl line and the These are written on the right and left sides of the axis.

As shown in this figure, the disk storage section 4 described above
A is a circular concave surface, and a circuit 4 connects these.
B is also formed with a concave surface.

A gear 4E is formed on the outer periphery of the rotating disk tray 4.
It meshes with a gear 5A of a rotary motor 5 provided on the slide table 3. A central shaft 4F is rotatably fitted to a rotating shaft 3A implanted in the slide table 3.

On the back side of the rotating disk tray 4, there are 3
Book circumferential rib 4G+, 4G2. 4G3, the outermost circumferential rib 4G+ has one positioning frame 4HI, the middle and inner circumferential ribs 4G+,
4G2 is provided with recessed portions 4H2 and 4H3 for rotational position detection with a slight angular difference.

The recessed notch 4H2 is provided to specify a specific position of the rotating disc tray 4, and the recessed notch 4H3 is provided to specify the position of the disc storage section 4A.

Therefore, the rack portion 4H1 is required at least for the stopping position of the rotary disk tray 4, that is, the number of stored disks, and as will be described later, if the number of stored disks is an odd number, the recessed portion 4H3 is required for at least twice the number of disks stored. Preferably, they are arranged at an angle.

Although FIG. 4 shows an embodiment in which the slide table 3 is provided with microswitches 15A and 15B for detecting the recessed portions 4H2 and 4H3, other optical or magnetic detection devices may be used. can do.

The above-described chucking head 6 is fixed to one end of the slide table 3, and a disc pressing member consisting of a support plate 6A, a magnet 6B, and a pressing plate 6C is loosely fitted into the chucking head 6. Therefore, as shown in the figure, when the spindle motor 45 and the chucking table 46 rise from below during loading, the disk (not shown) placed in the disk storage section 4A rises slightly upward, and the disk holding member It is pressed onto the turntable 46 by the suction force of the magnet 6B, and the rotational force of the spindle motor 45 can be transmitted.

FIG. 6 shows an example of the front panel surface of the multi-disc player of the present invention, and 51 is a selection switch for specifying whether to play one disc or all stored discs; 52; is the reception window for the remote control, 53
54 is a program key that can display or select the number of the stored disc or the disc being played; 54 is the playing time of the disc as seen in the past;
55 is a repeat button, 56 is a time display button, 57 is a disk skip button, 58 is a program memory button, and 59 is a clear button. Further, 60A and 60B indicate AMS operation buttons for locating the beginning of the disc being played (AMS).

Reference numerals 61 to 65 indicate operation buttons that are used in ordinary disc players, such as a start button, a bow button, a fast forward button, a stop button, and a slide table opening/closing operation button.

I! of the multi-disc player of this invention! Since the main structure is as described above, when the slide table opening/closing operation button (65) is pressed, the slide table 3 is pulled out to the front of the housing as shown in FIG. can be achieved.

In this case, if the disc storage area 4A at the front end of the slide table 3 is not empty, manually rotate the rotating disc tray 4 to bring the empty disc storage area 4A to the front and select the disc you want to play. The disc can be stored in this disc storage section 4A, or replaced with a new disc.

When the selection button 51 is set to, for example, a single-disc performance mode, the slide table 3 can be returned to the playback state by pressing the opening/closing operation button 65 to return it into the housing.

That is, when the closing operation is performed, the aforementioned loading gear 20 rotates clockwise and engages with the rack 13 of the slide table 3, and at the same time as it is drawn into the housing, the stopper plate 26 locks the slide table 3 within the housing. Then, when the loading gear 20 further rotates by half a rotation, the sub-chassis 31 moves laterally, and as described above, the optical block 8 mounted on the box 34,
Then, the spindle motor 45 rises upward.

While the slide table is in operation, the rotary disk tray 4 is rotated by the rotary motor 5, and during this time, the presence or absence of a disk, the position of the disk storage section, etc. are recorded in the memory, and finally the most The disk at the front end is driven to the IIg raw position.

Then, the turntable 46 of the spindle motor 45 that has risen up at this position enters the center opening of the disk and presses against the chucking head 6 provided at one end of the slide table 3, thereby causing the chucking table and the disk to move upward. are coupled, and rotational force is applied to the disc at the playback position.

Then, various servo rotations are operated according to commands from the control section of the electronic circuit, and the instrument enters a performance state.

As mentioned above, in the single-disc play mode, the disc at the front end of the slide table 3 during disc coding is automatically moved to the playback position when loading is complete, so it is compatible with a normal disc player. The multi-disc player of the present invention can be used in a similar manner.

Such rotation control of the rotating disk tray 4 is performed by using the recessed portions 4H2, 4 formed in the circumferential ribs 4G2.4G:l formed on the back surface of the rotating disk tray 4 described above.
This is done by detecting H3 using microswitches 15A and 15B.

That is, first, by detecting only one concave notch 4H2 formed on the circumference, the rotary disk tray 4
Store the position information in memory etc., and then move from this point to the recess F.
When F114 H3 is detected by another microswitch (15B) and the number is counted, the position of the disk storage section can be specified based on the counted value.

Furthermore, while the rotating disk tray 4 rotates once, the light output from the reflective disk player 16 provided on the slide table 3 is irradiated onto the opening 4C of the rotating disk tray, as shown in FIG. When a disc D is present in this opening 4C, the presence or absence of a disc in each disc storage section 4A is detected by receiving the reflected light. Then, the detection signal of the presence or absence of a disc is stored in the memory (RAM) of the control unit (CPU) in the player together with the position detection data, so that it can be used as data for specifying the play order of the discs, etc.

In addition, information on the presence or absence of a disk is displayed on the front panel so that the user can refer to it when programming.

Therefore, in the case of a single-disc performance, when the rotary motor 5 is rotated and the count value reaches a predetermined number, the rotary motor 5 is stopped and the rotation stopper 14 is activated. ? By counting 5 ll4H3, the rotating disc tray 4 can be rotated half a rotation, and the disc in the front row can be moved to the playback position.

However, when the selection button 51 is set to the continuous play mode, when the +If playback of the disc at the playback position described above is completed, the next disc is rotated by one disc in the direction shown by the arrow Z in FIG. When the playing mode is set to IL and five discs are stored, five discs can be played continuously.

In this case, when the rotating disk tray 4 rotates once due to the rotation control performed during loading as described above,
Since the number of discs in the disc storage section is detected by the photodetector 16 etc. provided on the underside of the slide table, it is possible to prevent an empty disc storage section from stopping at the playback position due to the skip operation. .

Furthermore, depending on the presence or absence of a disc recorded in the CPU memory (RAM), the playback order of the discs can be specified using the program button 58 in continuous play mode, and by applying repeat, it is possible to play for an even longer time. can be enjoyed.

〔Effect of the invention〕

As described above, the multi-disc player of the present invention has a rotating disc tray mounted on the slide table so that a plurality of discs can be accommodated in the housing, so it is more effective than conventional players. It has the effect of dramatically improving the playback ability, and it is extremely easy to replace and insert discs.In the normal playback mode, the disc loaded in the disc tray enters playback mode, just like in a conventional disc player. This has the effect of simplifying playback operations and making the overall shape of the player more compact.

[Brief explanation of drawings]

Figure i1 is an exploded perspective view showing an overview of the multi-disc player of the present invention, Figure 2 is a plan view showing a mechanism for bringing the slide table into a loading state, and Figure 3 is an exploded perspective view for explaining the drive mechanism of the optical block. FIG. 4 is an exploded perspective view, FIG. 4 is a sectional view of a portion of the rotating disk tray, FIG. 5 is an explanatory diagram of a detection unit that performs position detection and setting of the rotating disk tray, and FIG. 6 is an example of the front panel of the present invention. The front view shown in FIG. 7 is an explanatory diagram of the disk detection device. In the figure, 1 is a part of the chassis, 2 is a front panel, 3 is a slide table, 4 is a rotating disk tray, 4A is a disk storage section, 5 is a rotating motor, 6 is a chucking head, 7 is a disk playback block, and 8 is a An optical block, 9 a loading drive mechanism, and 10 an electronic circuit board. RO Qian Tensugechiar DII City Map 5

Claims (1)

[Claims] A slide table configured to slide horizontally into and out of a housing, and a plurality of disk storage units mounted on the slide table and capable of storing a plurality of disks on a flat surface. a rotating disk tray provided therein; a drive device capable of rotating the rotating disk tray and stopping the rotating disk tray at a predetermined position; and a loading device that sets the slide table and the disc playback block to a loading position, the slide table being pulled into the housing from a first state in which it is pulled out from the housing. When moving to the second state, the rotating disk tray is rotated at least one rotation, and at least one detector that detects information on the presence or absence of a disk placed on the rotating disk tray slides. A multi-disc player characterized by being provided on a table.