KR19990003506U - Optical disc dropout prevention device - Google Patents

Abstract

The present invention relates to an optical disk drive, and in particular, a spindle motor (1) for driving the disk (3) so that the disk does not slip on the turntable due to the disk inertia when the rotational speed of the spindle motor is accelerated and ; A spindle motor rotating shaft (2) coupled to the center of the spindle motor (1) to rotate the disk; A disk 3 which rotates at the same time by the rotation of the spindle motor rotating shaft 2; A turn table (4) for supporting the disk (3); A clamp cap (5) connected to the spindle motor rotation shaft (2) to fix the disk (3) to the center; A first rubber plate 6 connected with the turn table 4 to increase the coefficient of friction when the disk 3 rotates; A second rubber plate 7 having the same size as the first rubber plate 6; A clamping holder (8) for fixing the turn table (4) and the disk (3) against slipping by rotational force; A third rubber plate 9 having a predetermined size on the left side of the clamping holder 8; A fourth rubber plate (10) having the same size as the third rubber plate (9) on the right side of the clamping holder (8); A magnet 11 coupled to the inner center of the turn table 4; It characterized in that it comprises a steel plate 12 is coupled to the outer center of the clamping holder (8), the optical disk detachment prevention device of the present invention has the effect that the disk does not slip by maintaining a constant clamping force.

Description

Optical disc dropout prevention device

The present invention relates to an optical disk drive, and in particular, a spindle motor in a fixing device for holding a disk placed on a turn table of the spindle motor as the rotation speed of the spindle motor increases as the speed of the optical disk drive increases. An optical disk departure preventing device for preventing the disk from slipping on the turntable due to the inertia of the disk when the number of revolutions is rapidly accelerated.

Conventional optical disc departure prevention apparatus has a low coefficient of friction due to the rubber plate connected to the turntable, so that the disk slips when the strength of the magnet coupled to the inner center of the turntable is not strong, and the cost of the magnet is strong There was a problem using the magnet.

The present invention is to solve the above-mentioned conventional problems, in particular, by attaching a rubber plate that was attached only to a conventional turntable together with a clamping holder (Holder), clamping expensive magnets to increase the force It is an object of the present invention to provide an optical disk detachment preventing device which does not slip and does not slip even when rotating at high speed.

In order to achieve the above object, the present invention provides an optical disk detachment prevention apparatus comprising: a spindle motor for driving a disk; A spindle motor rotating shaft coupled to the center of the spindle motor to rotate the disk; A disk which rotates simultaneously by the rotation of the spindle motor rotating shaft; A turn table for supporting the disk; A clamp cap connected to the spindle motor rotation shaft to fix the disk to the center; A first rubber plate connected to the left side of the turntable to increase the coefficient of friction when the disc rotates; A second rubber plate connected to the right side of the turn table and having the same size as the first rubber plate; A clamping holder for fixing the turn table and the disk so as not to slide by rotational force; A third rubber plate having a predetermined size on the left side of the clamping holder; A fourth rubber plate having the same size as the third rubber plate on the right side of the clamping holder; A magnet coupled to the inner center of the turn table; And an iron plate coupled to the outer center of the clamping holder.

1 is a block diagram showing an optical disk departure prevention apparatus according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: Spindle Motor 2: Spindle Motor Rotating Shaft

3: disk 4: turntable

5: clamp cap 6: first rubber plate

7: second rubber sheet 8: clamping holder

9: 3rd rubber plate 10: 4th rubber plate

11: magnet 12: iron plate

Hereinafter, described in detail through the embodiment according to the present invention as described above.

As shown in FIG. 1, first, the spindle motor 1 drives the disk 3, and in the spindle motor rotation shaft 2, the disk 3 is coupled to the center of the spindle motor 1. Rotation of the disk 3, the disk 3 is rotated at the same time by the spindle motor rotary shaft (2).

In addition, the turntable 4 supports the disk 3, and the clamp cap 5 is connected to the spindle motor rotation shaft 2 to fix the disk 3 in the center, and the first rubber plate 6 is The disk 3 is connected to the turntable 4 to increase the coefficient of friction when the disk 3 rotates, the second rubber plate 7 has the same size as the first rubber plate 6 When (3) rotates, it increases the coefficient of friction.

Meanwhile, in the clamping holder 8, the turn table 4 and the disk 3 are fixed so as not to slide by the rotational force, and the third rubber plate 9 is connected to the left side of the clamping holder 8 so that the disk 3 can be fixed. ) Increases the coefficient of friction when rotating, the fourth rubber plate 10 is connected to the right side of the clamping holder (8) to increase the coefficient of friction when the disk (3) rotates, steel plate (12) ) Is connected to the center of the clamping holder (8), the magnet 11 is coupled to the inner center of the turn table (4) to generate a magnetic force so that the iron plate 12 and the disk (3) does not slip, Configure the embodiment.

Hereinafter, the operation process of the optical disk departure prevention apparatus configured as described above is as follows.

When the user places the disk 3 on the turn table 4, the spindle motor 1 is raised to the center of the turn table 4, and the spindle motor rotating shaft 2 coupled with the spindle motor 1 is moved. By being inserted into the hole (HOLE) located in the center of the disk (3), the clamp cap (5) coupled to the spindle motor rotary shaft (2) fixes the position of the disk (3).

Then, the clamping holder 8 is fixed to the upper side of the disk 3 so that when the clamping holder 8 and the turntable 4 fix the disk 3, the spindle motor 1 rotates. When the spindle motor 1 rotates rapidly, the magnet 11 located in the center of the turntable 4 and the iron plate 12 located in the center of the outside of the clamping holder 8 are magnetized by the disc 3. By pressing, the first and second rubber plates 6 and 7 and the third and fourth rubber plates 9 and 10 coupled to both sides of the clamping holder 8 on both sides of the turntable 4 are discs. The coefficient of friction in (3) is so large that the disk is placed without flow and rotates.

As described above, the optical disc detachment prevention device of the present invention attaches the third and fourth rubber plates to the left and right sides of the clamping holder to increase the coefficient of friction between the disk and the clamping holder to prevent the clamping holder from slipping. The force is kept constant so that the disk does not slip.

Claims (1)

A spindle motor that drives the disk; A spindle motor rotating shaft coupled to the center of the spindle motor to rotate the disk; A disk which rotates simultaneously by the rotation of the spindle motor rotating shaft; A turn table for supporting the disk; A clamp cap connected to the spindle motor rotation shaft to fix the disk to the center; A first rubber plate connected to the left side of the turntable to increase the coefficient of friction when the disc rotates; A second rubber plate connected to the right side of the turn table and having the same size as the first rubber plate; A clamping holder for fixing the turn table and the disk so as not to slide by rotational force; A third rubber plate having a predetermined size on the left side of the clamping holder; A fourth rubber plate having the same size as the third rubber plate on the right side of the clamping holder; A magnet coupled to the inner center of the turn table; And an iron plate coupled to the outer center of the clamping holder.