KR19980021164A - Magnet fixing structure of optical disc player - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnet fixing structure of an optical disc player, wherein a turntable is rotatably mounted by a drive from a spindle on a deck on which an optical pickup is mounted to be movable in a radial direction of the optical disc, and chucking the optical disc loaded on the turntable by magnetic force. In the magnet fixing structure of an optical disc player for attaching a magnet to a chuck,

It is provided on the magnet seating boss formed concentrically on the upper surface of the chuck provides a magnet fixing structure of the optical disk player, characterized in that it has a hook portion to prevent the magnet from being separated.

Description

Magnet fixing structure of optical disc player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnet fixing structure of an optical disc player, and more particularly, to magnetically chucking an optical disc loaded on a turntable rotated by a spindle motor drive by a front and rear drive means of a tray for accommodating at least one or more optical discs. It relates to a magnet fixing structure of an optical disc player for fixing a magnet to a chuck.

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, and then receives the reflected light to reproduce the recorded signal according to the difference in the amount of light. to be.

As shown schematically in FIGS. 1 and 2, an upper surface of the chuck 3 for magnetically chucking an optical disc 2 loaded on a turntable 1 rotated at a predetermined speed by a spindle motor driving, which is not shown. A circular seating groove 4 is integrally formed, and is fastened to the chucking bracket 6 which is located above the magnet 5 inserted into the seating recess 4 to prevent the magnet 5 from being separated. It is fixed by.

In order to fix the magnet 5 to the chuck 3 for chucking the optical disk 2 to the turntable 1 as described above, a separate chucking bracket 6 and a fastening member for fixing it to the chuck 3 are required. Since the screw hole 3A for fastening the fastening member 7 is to be formed in the chuck 3, the cost of the cost increases due to the increase in the number of parts, and the workability decreases due to the increase in the number of working processes.

Accordingly, an object of the present invention is to reduce the cost of the work by reducing the number of parts used when fixing the magnet to the chuck to chuck the optical disk seated on the turntable rotatably mounted by the drive of the spindle motor on the deck of the optical disk player, It is to provide a magnet fixing structure of an optical disc player to improve workability by shortening the process.

1 is an exploded perspective view of a magnet fixing structure of a conventional optical disc player.

2 is a state diagram used in FIG.

3 is a perspective view of a magnet fixing structure of the optical disc player according to one embodiment of the present invention;

Figure 4 is a perspective view of a magnet fixing structure according to another embodiment of the present invention

5 is a state diagram used in FIG.

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

10. Turntable

11.DISC

12. Chuck

13. Magnet

14, 15.Boss

16, 17. Hook part

18. Coupling protrusion

The object of the present invention described above is that a magnet is mounted on a chuck to which the turntable is rotatably mounted by driving from a spindle on a deck on which the optical pickup is movable in the radial direction of the optical disk and magnetically chucks the optical disk loaded on the turntable. A magnet fixing structure of an optical disc player to be mounted, comprising: a hook portion formed on a magnet seating boss formed concentrically on the upper surface of the chuck to prevent the magnet from being detached, thereby providing the magnet fixing structure of the optical disc player. do.

According to a preferred feature of the present invention, the hook portion is formed on the inner circumference of the outer boss or the outer circumference of the inner boss to pressurize the magnet upper surface.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view of a magnet fixing structure according to an embodiment of the present invention, Figure 4 is a perspective view of a magnet fixing structure according to another embodiment of the present invention, Figure 5 is a use state diagram 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 ( The magnet 13 seating bosses 14 and 15 are formed concentrically on the upper surface of 12, and the magnet 13 is pressed against the inner circumferential side of the outer boss 15 to prevent it from being detached. The hook portion 16 is formed.

On the other hand, as shown in Figure 4, the hook portion 17 for pressing and supporting the magnet 13 can be formed on the outer peripheral side of the inner boss 14.

Reference numeral 18 is a coupling protrusion for detachably mounting the chuck 13 to the housing through a coupling groove (not shown) formed on the outer periphery of the outer boss 15 to install the deck.

According to the present invention configured as described above, as the tray of the optical disc player is closed to the deck side by the front and rear driving means, the optical disc 11 accommodated in the tray is seated on the turntable 10 rotatably mounted on the deck, and the turntable ( As the upper surface of the optical disc 11 seated on the turntable 10 is brought into close contact with the bottom surface of the chuck 12 by the upward driving of 10, the chucking of the optical disc 11 is completed.

Therefore, the magnetic force of the magnet 13 mounted between the bosses 14 and 15 of the chuck 12 prevents the SLIP of the optical disc 11 during the high speed rotation of the turntable 10. .

When the magnet 13 is fixed to the magnet 13 by placing the magnet 13 between the inner boss 14 and the outer boss 15 and seated vertically downward, several hooks are formed on the inner circumference of the outer boss 15. As each of 16 is expanded outward by its elastic force, the magnet 13 is seated between the inner boss 14 and the outer boss 15. At this time, the magnet 13 is prevented from being separated from the seating portions of the bosses 14 and 15 by the hook portion 16.

As described above, the magnet fixing structure of the optical disc player according to the present invention has the advantage of lowering the cost of cost by reducing the number of parts used when fixing the magnet to the chuck to chuck the optical disc seated on the turntable of the optical disc player, and the magnet. By shortening the workman to fix it has the advantage that can greatly improve the workability.

Claims (2)

A magnet fixing structure of an optical disc player in which a turntable is rotatably mounted by a drive from a spindle on a deck on which an optical pickup is movable in a radial direction, and a magnet is mounted on a chuck that magnetically chucks an optical disc loaded on the turntable. To The magnet fixing structure of the optical disc player, characterized in that the hook is formed on the magnet mounting boss formed concentrically on the upper surface of the chuck to prevent the magnet from being separated. The magnet fixing structure of claim 1, wherein the hook part is formed at an inner circumference of the outer boss or an outer circumference of the inner boss to press and support the upper surface of the magnet.