JPS62192071A - Turn table device for optical type disk player - Google Patents

Abstract

PURPOSE:To improve the CD and VD turn table position accuracy and to miniaturize a device by fitting a turn table for a compact disk CD and an optical type video disk VD at the same spindle. CONSTITUTION:When a turn table 1 for VD is rated and rotated by a driving device, a VD 2 sandwiched by a disk mounting surface 1a and a clamper 3 is also rotated by the same frequency of rotation and the signal of the VD 2 is detected by an optical type pick-up 6. A screw part 1b is provided at the table 1, the distance of a part of the table 1 connected to a stopper 5a provided at the mounting surface 1a and a spindle 5 edge is adjusted and the disk mounting surface 4a of a turn table 4 for CD and the mounting surface 1a of the table 1 can be made into the same surface. Thus, the pick-up 6 can be shared without adding any change even at the time of the performance of any of the VD and CD.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an optical disc player that can be used for both a compact disc and an optical video disc. The structure is shown in Figure 3. That is, a compact disc (hereinafter abbreviated as CD) turntable 11 and its motorized device 12, and an optical video disc (hereinafter abbreviated as VD) turntable 13 and its 7 drive device 14 are mounted on a support 16, respectively. It is fixed.

This support 16 is rotatably attached around a rotation shaft 16 and maintains its position by contacting a stopper 17, and a pulley 18 is also fixed to the support 16.

Figure 3 shows the VD turntable in the playing position, and in order to play a CD from this state,
The motor 19 is rotated and the pulley 20 rotates the belt 21 and the pulley 18. Since the pulley 18 is fixed to the support 15, the support 16 also rotates and the stopper 2
The support body 15 comes into contact with 2 and stops rotating. At this time, the CD turntable 11 fixed to the support 16 is in a playing position.

Problems to be Solved by the Invention However, with such a structure, both the CD and VD turntables are only supported by the rotating shaft 16, and the support 16 is in contact with the stopper 17°22. However, due to the occurrence of vibration due to unbalance of the disc, drive unit, or turntable, or due to the large distance between the disc mounting surface of the turntable and the rotating shaft 16, or due to the stoppers 17 and 22 due to contact only, the turning The positions of tables 11 and 13 become unstable.

In addition, turntable 11.13 and drive device 12.14
In order to rotate the entire support 15 to which the This makes it difficult to miniaturize disc players.

Furthermore, a dedicated drive device is required for each of the CD and VD turntables, which can be said to be a disadvantageous structure in terms of cost.

Therefore, the object of the present invention is to attach all the turntables for CD and '/D to the same spindle, improve the positional accuracy of the CDI VD turntable, and downsize the apparatus.

Means for solving the problems and technical means of the present invention for solving the above problems are as follows:
The spindles for CD and VD are fixed to the same spindle, the turntable for CD is fixed, the turntable for VD is provided in contact with the outer periphery of the spindle so that it can move in the axial direction of the spindle, and one end of the spindle is fixed. A stopper is attached to the VD turntable to restrict movement.

Effect The effect of this technical means is as follows. That is, C
Since the D turntable is fixed to the spindle, its positional accuracy can be maintained without any change, and the VD turntable only moves in the axial direction along the outer circumference of the spindle, which is different from the conventional example. Since the support body itself does not rotate as shown, the accuracy of the gap with the outer periphery of the spindle can be used as the positional accuracy of the vD turntable, so it is a structure in which high accuracy can be easily obtained.

In addition, in terms of space, it is easy to downsize the VD turntable as a moving object.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows that the vD turntable 1 is positioned by a stopper 51 provided at one end of the spindle 5,
The VD 2 is sandwiched between the disk mounting surface 1a of the 'lrD turntable 1 and the clamper 3, and the VD 2 is shown in a playing state and in a state in which the VD 2 is set on the turntable.

In this state, the 'l/D turntable 1 is connected to the 1 drive device (
(not shown), the disk mounting surface 1
VD2, which is sandwiched between a and clamper 3, also rotates at the same rotational speed, and the optical pickup 6 detects the signal of VD2.

A screw portion 1b is provided on the VD turntable 1, and the distance between the disk mounting surface 1a and the portion of the VD turntable that is in contact with the stopper Sa provided at the end of the spindle 5 is adjusted. The mounting surface 4a and the disc mounting surface 1 of the VD turntable 1
A can be made to be on the same surface, and as a result, the Pink Up 6 can be used in common for both VD and CD performances without making any changes.

Next, FIG. 2 shows a CD playing state and a state in which the CD is set on a turntable, and the VD turntable 1 moves in the axial direction of the spindle 5, creating a gap between it and the CD 7, and picking up the CD. e is the VD shown in Figure 1
It is moved closer to the spindle 6 than when playing, making it possible to play the CD7. Naori Ramper 3 is vD
The CD can be sandwiched between the CD and the disc mounting surface 4a of the CD turntable 4 by moving by the difference in thickness between the disc and the CD.

At this time, as described above, the position of the disc mounting surface 4a of the CD turntable 4 is unchanged from that in the VD playing state shown in FIG. 1, so the pickup 6 can be used in common as is.

Effects of the Invention The present invention has a structure in which each of the CD and VD turntables is attached to a coaxial spindle, and only the VD turntable is moved in the axial direction along the spindle, so the positioning accuracy of the turntable can be greatly improved. It has a structure that maintains accuracy over a long period of time because it has fewer moving parts and can strengthen the hold on the turntable.

i;i, Since only the VD turntable is moved, there is less space for it, and the equipment can be made smaller and lighter.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a turntable device of an optical disc player according to an embodiment of the present invention. 1... Turntable for optical video discs, 4... Turntable for compact discs, 5... Spindle. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
--Yuji type Biteotensk River Goonte 7'') and 4-11 Goonpaktotisk Daante 7) Figure 1
5- Spisodol Figure 2 Figure 3? 0

Claims (3)

[Claims] (1) An optical disc player in which turntables for compact discs and optical video discs are mounted on a coaxial spindle, and the turntable for optical video discs is movable in the axial direction of the spindle. turntable device. (2) The optical disc player according to claim 1, wherein a positioning stopper is provided on a part of the spindle so that the disc mounting surfaces of the turntable for compact discs and optical video discs are on the same surface. turntable device. (3) A patent claim in which a screw portion is provided in a part of a turntable for an optical video disc, and the distance between a part corresponding to a stopper provided in a part of the spindle and the disc mounting surface of the turntable can be changed. A turntable device for an optical disc player according to item 2.