JPH02260167A - Disk loading mechanism for disk reproducing device - Google Patents

Abstract

PURPOSE:To set plural pieces of small-diameter disks at a time by installing plural pieces of small-diameter disk trays at a large-diameter disk loading part, and making the small-diameter disk tray movable from the outer peripheral side of the large-diameter disk loading part to the center side of it. CONSTITUTION:At the time to reproduce an LV, a main tray 10 is discharged from the inside of a reproducing device, and the LV is set to the groove 16 or 30 of a main turn table. In this state, when the tray 32 is stored in the inside of the reproducing device, the tray 10 descends, and the LV is set to the turn table 12, and is reproduced. Besides, at the time to reproduce a CD, the tray 10 is discharged, and the CD is set to the groove 26 or 28 of a sub-trays 18 to 21. In this state, the tray 10 is stored, and if the disk on the tray 18 is to be reproduced at first, the tray 18 is rotated to the center side, and the CD is set on the table 12. A tray 19 is turned to the center side from the peripheral side of the tray 10, when the reproduction of the CD on a tray 18 is terminated. Thus, auto-change can be realized.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to LV (laser vision disk) and CD.
This invention relates to a disk mounting mechanism in a disk playback device capable of playing back both large-diameter disks and small-diameter disks, such as a combination player (compact disk), and is capable of mounting a plurality of small-diameter disks.

[Conventional technology]

2. Description of the Related Art Conventionally, a disc playback device called an LV/CD combination player that can play back LV and CD in common has been known. Conventional LV/CD combination players have an LV eraser (diameter 30cm and 20cm) and a CD groove (diameter 12cm and 8cm) on the disc tray.
(an) are formed in concentric circles, and the discs are set in the grooves corresponding to the type of disc to be played for playback.

[Problem to be solved by the invention]

The conventional LV/CD combination player is 12cm.
Even with small-diameter discs such as CDs and 8-an-CDs, it was impossible to set only one disc at a time, and it was not possible to listen to multiple discs in succession by changing them automatically.

The present invention solves the drawbacks in the conventional techniques, and
In a disc playback device that can play both large and small diameter discs, a disc mounting a that enables automatic change by allowing multiple small diameter discs to be played.
It is intended to provide m.

[Means to solve the problem]

In this invention, a plurality of small-diameter disk trays on which small-diameter disks are placed are arranged on a large-diameter disk mounting section, and these small-diameter disk trays are configured to be movable from the outer circumferential side to the center side of the large-diameter disk mounting section. That's what happens.

[For production]

According to this invention, since a plurality of small-diameter disk trays are installed on the large-diameter disk mounting section, it is possible to set a plurality of small-diameter disks at the same time, and these small-diameter disk trays can be placed on the large-diameter disk mounting section. If the playback is performed by moving alternately from the outer circumference side to the center side, it is possible to automatically change a plurality of small-diameter disks and play them continuously.

In addition, since the small-diameter disc tray is moved from the outer circumferential side of the large-diameter disc mounting section to the center for playback, the basic mechanisms such as the turntable, clamp structure, and pickup are common for small-diameter discs and large-diameter discs. This makes it possible to realize automatic change with a simple configuration.

〔Example〕

An embodiment of the invention is not shown in plan view in FIG.

The main 1 to the tray (large-diameter disc mounting section) 10 move in the direction of arrow A, and are housed in and ejected from the main body of the playback apparatus. An opening 14 is formed in the center of the main tray 10 into which a turntable 12 and an optical head are inserted. Turntable 12 has a diameter of 35mm for LV.
Convex part 1.2 a and above it a diameter 15 for CD.
(2) A convex portion 12b of m is formed. Main tray 1o
When the main tray 10 is housed in the main body of the playback apparatus, the main tray 10 is lowered and the loaded disc is set on the turntable 12.

A diagonal groove 16 for holding 30 an LV is formed on the main tray 10. Inside this eraser 16 is a sub-tray (small diameter disc tray) 18 for holding CDs.
~21 are installed. The sub-trays 18 and 19 are rotatably installed around a shaft 22 with different heights. The sub-trays 20, 21 are attached to the shaft 24 at different heights.
It is installed so that it can rotate freely around the center. Subtrays 18 and 21 and subtrays 19 and 20 are installed at the same height. 12 cIn on Zabu 1-Lee 18-19
A groove 26 for holding a CD and a groove deeper than this.
A well 28 for holding 8 an CD is formed. Also, on the upper sub-tray 1920 is a 20■LV
A groove 30 is formed for holding the. The sub-trays 18 to 21 position the CD placed on the turntable 12 by rotating from the outer periphery side to the center side of the main tray 10 as shown by dotted line B (state in which the sub-trays 20 or 21 are positioned) is shown by a two-dot chain line C). Each of the sub-1-rays 19 to 21 is formed with an opening 32 into which the turntable 12 is inserted while being positioned at the center, and into which the optical head is inserted and moved.

■A 34a,
34b is attached, and the subtray 18.1.9 is rotated by driving the idler 36 that meshes with the idler 34b. In addition, the rotation shaft 24 of the subtray 20.21 has a gear 38a,
38b is attached, and the sub-1 helay 20.21 is rotated by driving the idler 40 that meshes with it.

The drive mechanism for the sub-trays 18, 19 is not shown in FIG. The idler 36 is installed on the support member 42. The support member 42 is housed within the playback device and is movable only in the left and right directions, as shown by the arrows. FIG. 2 shows the main tray 10 housed in the playback device,
By moving the support member 42 to the right in this state, the idler 36 is meshed with the gear 34a or 34b.

The idler 36 is mounted on a rotating rod 46 and directed by arrow E against the support member 42 by a splined pulley 44.
It is supported rotatably as shown in , and slidably in the vertical direction as shown by arrow F. The rotating rod 46 is urged downward by a spring 48. The rotary rod 46 is rotationally driven via a belt 54 by a motor (not shown) supported on the support member 42 .

A cam 50 is disposed below the rotating rod 46.

Cam 50 is driven in the direction of arrow G by plunger 52. When the lower end of the rotating rod 46 is in contact with the higher position fn 50a of the cam surface, the idler 36 is in contact with the gear 34a.
is positioned at a height of

Furthermore, when the lower end of the rotary rod 46 is in contact with the low position 50b of the cam surface, the idler 36 is positioned at the height of the gear 34b.

The rotation shaft 22 of the subtray 18.19 is a coaxial pipe 22a.
, 22b'''C''. The sub tray 18 is attached to the outer rotating shaft 22b, and the sub! ~Ray 19 is attached to the inner rotating shaft 22a. A spacer 56 is inserted between the subtrays 18 and 19. Further, a gear 34a is attached to the lower end of the outer rotating shaft 22b. Further, a gear 34b is attached to the lower end of the inner rotating shaft 22a. Therefore, by meshing the idler 36 with the gear 34a, the subtray 18 is rotated as shown by arrow G, and the idler 36 is rotated as shown by arrow G.
By meshing with the gear 34b, the subtray 19
is rotated as shown by arrow G.

The drive a structure of the right sub-trays 20 and 21 is also supported by the support member 42.
It is constructed symmetrically to the mechanism shown in FIG. 2 above. Support member 4
2 to the right by a drive mechanism (not shown).If the idler 36 engages with the gear 34a or 34b, the sub-tray 18 or 19 is rotated, and the support member 42 is moved to the left, the idler 40 engages with the gear 38a or 34b. 38
b, and the subtray 20 or 21 is rotated. When the support member 42 is in its intermediate position, the idler 36,40 does not mesh with any gear.

According to the above configuration, when reproducing the LV, the main tray 10 is ejected from the reproducing apparatus (at this time, the main tray 10 is
1 is retracted toward the outer circumference of the main tray 32. )
, LV in the groove 16 (30 L) of the main turntable 10.
(for V) or 30 (for 20am L V). In this state, if the main tray 32 is misplaced in the playback device, the main tray 10 will be lowered inside the playback device and the LV
is set on the turntable 12, and is clamped from above by a clamper to perform reproduction.

When playing a CD, the main tray 10 is ejected from the playback apparatus and the CD is set in the groove 26 (for 12 cm CD) or 28 (for 8 cm CD) of the sub trays 18 to 21. Up to 4 sheets can be set. In this state, the main tray 10 is stored in the playback device. If the disk on the sub-tray 18 is to be played first, the cam 50 shown in FIG. 2 contacts the lower end of the rotating rod 46 with the cam surface 50a, and the support member 42 moves to the right.
The idler 36 meshes with the gear 34a.

In this state, the belt 54 is driven by the motor to rotate the idler 36, and the subtray 18 is rotated from the outer peripheral side to the center side of the main tray 10 via the gear 34a. When the position on the turntable 12 is detected by a limit switch or the like, the drive of the sub-tray 18 is stopped, the support member 42 is placed at an intermediate position, and the idler 36, 40 is moved to the gears 34a, 34b, and gear 38a.

38b). When the main tray 10 is lowered in this state, the CD is set on the turntable 12. In this state, reproduction can be performed using the same optical head used for LV reproduction.

When the reproduction of the CD on the sub-tray 18 is completed, the main tray 10 is raised and the CD is pulled up from the turntable 12. Then, the support member 42 moves to the right, the idler 36 meshes with the gear 34a, and the idler 36 is rotated in the opposite direction by the motor drive, so that the subtray 18 is returned to the outer peripheral side of the main tray 10. When it is detected by a limit switch or the like that the subtray 18 has been completely returned, the motor drive is stopped and the support member 42 is returned to the intermediate position.

If the auto-change program is set so that the disc on the sub-tray 19 is subsequently played, the plunger 52 is driven to extend the cam 50, and the cam surface 50b comes into contact with the lower end of the rotating rod 46. .

In this state, the support member 42 moves to the right, the idler 36 meshes with the gear 34b, and then the belt 54 is driven and the subtray 19 is rotated from the outer circumferential side to the center side of the main tray 10. Sub tray 19 or turntable 1
When it is detected by a limit switch etc. that the support member 42 is positioned on the support member 42, the motor drive is stopped and the support member 42
is returned to an intermediate position. When the main tray 10 is lowered in this state, the CD is set on the turntable.

Similarly, by sequentially rotating the sub-trays 20 and 21 from the outer circumferential side to the inner circumferential side on the main tray 10, four CDs can be automatically changed and played continuously.

[Example of change]

In the above embodiment, the large-diameter disk mounting section (main tray 10
) was made into a tray format so that it could be stored and ejected from the main body of the disc playback device, but it was not a tray format (like a normal record player, the lid is opened and closed upwards and large diameter discs can be loaded and removed from above). This invention can also be applied to

〔Effect of the invention〕

As described above, according to the present invention, since a plurality of small-diameter disk trays are installed on the large-diameter disk mounting section, it is possible to set a plurality of small-diameter disks at the same time. By alternately moving from the outer circumferential side to the center side of the disk mounting section to perform playback, it is possible to automatically change a plurality of small-diameter disks and play them continuously. In addition, since the small-diameter disc tray is moved from the outer periphery of the large-diameter disc mounting section to the center for playback, the basic mechanisms such as turntables, clamp structures, and pickups for small-diameter discs and large-diameter discs can be changed. It becomes possible to share the same, and it is possible to realize automatic change with a simple configuration.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention. FIG. 2 is a side view showing the subtray drive mechanism in FIG. 1. 10...Main 1 heley (large diameter disk mounting part), 1
8 to 21...Sub tray (small diameter disc tray).

Claims (1)

[Claims] A disc playback device in which a plurality of small-diameter disc trays on which small-diameter discs are placed are arranged on a large-diameter disc rest, and these small-diameter disc trays are movable from the outer circumferential side to the center of the large-diameter disc rest. Disk loading mechanism of the device.