KR19980021162A - Chuck Structure of Optical Disc Player - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chuck structure of an optical disc player, in which a turntable is rotatably mounted by driving a spindle motor on a deck on which an optical pickup is movable in a radial direction of the optical disc, and the optical disc seated on the turntable is closely adhered to by the magnetic force of the chuck. A chuck structure of an optical disc player for pressurizing and chucking, the chuck structure having an upper surface formed on the chuck and having means for increasing the pressing force for pressing the optical disk against the turntable when the optical disk is rotated by the rotation of the turntable. It provides a chuck structure of an optical disc player, characterized in that it prevents slimming with respect to the turntable at the start and stop of rotation.

Description

Chuck Structure of Optical Disc Player

The present invention relates to a chuck structure of an optical disc player, and more particularly, to start the rotation and stop the rotation of the optical disc starting rotation by the drive of the spindle motor by magnetic force on a turntable rotatably mounted to the deck of the optical disc player. A chuck structure of an optical disc player is provided for preventing slip (SLIP) on a turntable during stop.

The optical disc player records digital signals in the form of irregularities on the disc, and then projects a light having high condensing power, such as a laser beam, onto the surface of the disc, receives the reflected light, and reproduces the recorded signal according to the difference in the amount of light. to be.

As schematically shown in Fig. 1, the optical disk chucking structure according to the prior art is an optical disk on which a turntable 1 is rotatably mounted on a deck of an optical disk player by driving a spindle motor, and is seated on the turntable 1. The magnet 4 is fixedly supported as the bracket 5 to the chuck 3 which chucks (2) in close contact with the magnet force.

As described above, the optical disk 2 chucked by the magnetic force of the magnet 1 on the turntable 1 can rotate at a predetermined speed by driving the spindle motor. At this time, as the turntable 1 starts to rotate, at the beginning of the rotation state before the optical disc 2 rotates and enters the set track, the turntable 1 stops the rotation during the play of the optical disc. The optical disk 2 in close contact with the turntable 1 by the magnetic force of the magnet 4 is vulnerable to sliding with respect to the turntable 1.

Accordingly, an object of the present invention is to increase the pressing force for tightly supporting the optical disk when the optical disk is rotated by the chuck structure for magnetically chucking the optical disk seated on the turntable of the optical disk player, thereby preventing the optical disk from slipping against the turntable during the initial and stop rotation of the optical disk. It is to provide a chuck structure of an optical disc player to prevent it.

1 is a schematic diagram of a chucking state of an optical disc player according to the prior art;

2 is a plan view of a chuck of an optical disc player according to the present invention;

3 is a schematic diagram of a chucking state of an optical disc player according to the present invention;

* Explanation of symbols used in the main part of the drawing

10. Turntable

11. Optical disc

12. Magnet

13. Chuck

14. Bracket

15. Slope

16. Serration

The object of the present invention described above is that the turntable is rotatably mounted by driving the spindle motor on a deck on which the optical pickup is mounted to be movable in the radial direction of the optical disk, and the optical disk seated on the turntable is pressed by the magnetic force of the chuck to chuck. In the chuck structure of an optical disc player, a chuck structure is formed on an upper surface of the chuck and includes means for increasing the pressing force for pressing the optical disc against the turntable when the optical disc is rotated by the rotation of the turntable, so that the optical disc starts to rotate. It is achieved by providing a chuck structure of an optical disc player which is characterized by preventing slimming with respect to the turntable at the start and stop.

According to a preferred feature of the present invention, the pressing force increasing means is formed on the upper surface of the chuck continuously inclined downward with respect to the rotational direction of the optical disc,

A serration part is provided to generate a pressing force for pressing the optical disc by air flow during the rotation of the optical disc.

Hereinafter, a preferred embodiment of the present invention will be described in detail according to the accompanying drawings.

Fig. 2 is a plan view of the chuck for chucking the optical disc of the optical disc player according to the present invention to the turntable, and Fig. 3 is a schematic view of the state where the optical disc is chucked by the chuck according to the present invention.

As shown in the figure, the turntable 10 is rotatably mounted on a deck not shown in the optical disk player by driving a spindle motor, and the chuck for chucking the optical disk 11 seated on the turntable 10 by magnetic force ( 13) The configuration in which the bracket 14 supporting the magnet 12 on the upper surface and preventing the detachment is fixed with respect to the fastening member not shown is the same as the conventional configuration shown in FIG. 1, and thus a detailed description thereof will be omitted. .

Therefore, according to a preferred embodiment of the present invention, the inclined surface 15 is continuously inclined downward with respect to the rotation direction of the optical disk 11 on the upper surface of the chuck 13 described above by the air flow during the rotation of the optical disk 11 The serration part 16 which produces the pressing force which presses the optical disc 11 is formed.

The optical disk of the optical disk player is chucked according to the present invention configured as described above. As the tray of the optical disk player is closed by the driving means toward the deck on which the optical pickup and the turntable 10 are mounted, the optical disk 11 accommodated in the tray is The upper surface of the optical disk 11 seated on the turntable 10 is mounted on the turntable 10 of the deck, and the upper surface of the optical disk 11 seated on the turntable 10 is brought into close contact with the bottom surface of the chuck 13. Chucking of is complete. Therefore, the magnetic force of the magnet 12 fixed to the upper surface of the chuck 13 is prevented from slimming the turntable 10 during the high speed rotation of the optical disk 11.

On the other hand, in the initial stage of rotation of the optical disc 11 where the turntable 10 starts to rotate and when the turntable 10 stops rotating, the respective inclined surfaces 15 with respect to the rotational direction of the optical disc 11 on the upper surface of the chuck 13. ) Is applied to the chuck 13 when the optical disc 11 is rotated, as a pressing force for pressing the optical disc 11 is generated by the air flow during rotation of the optical disc 11 by the serration part 16 formed to face each other. The optical disk 11 is completely held against the turntable 10 by the magnetic force of the magnet 12 and the pressing force of the serration part 16.

This makes it possible to prevent the optical disk 11 from slimming with respect to the turntable 10.

As described above, in the chuck structure of the optical disc player according to the present invention, the optical disc seated on the turntable of the optical disc player is chucked so that the optical disc is completely adhered to the turntable by the serration part formed on the upper surface of the chuck during rotation. Therefore, it is possible to prevent the slimming from the turntable at the initial and the rotation of the optical disk.

Claims (2)

In the chuck structure of an optical disc player, a turntable is rotatably mounted by driving a spindle motor on a deck on which an optical pickup is mounted to be movable in a radial direction of the optical disc, and the optical disc seated on the turntable is pressed and chucked by magnetic force of the chuck. Formed on the upper surface of the chuck and having means for increasing the pressing force for tightly pressing the optical disk against the turntable when the optical disk is rotated by the rotation of the turntable, so that the optical disk is turned against the turntable at the beginning and the stop of rotation. Chuck structure of an optical disc player, characterized in that it prevents slimming. The method according to claim 1, wherein the pressing force increasing means, The inclined surface is continuously formed inclined downward with respect to the rotational direction of the optical disk on the upper surface of the chuck, the optical disk player characterized in that it has a serration for generating a pressing force for pressing the optical disk by the air flow during the rotation of the optical disk. Chuck structure.