KR100556729B1 - Disk tray for optical disk drive - Google Patents

Abstract

The present invention relates to a disc tray for an optical disc drive, and is intended to prevent the optical pickup movable portion from being impacted by a part of the air flow moving by the optical disc rotation. To this end, the improved disk tray 2 'is provided with a barrier wall that protects the movable portion 9 from being impacted by some of the air flows toward the movable portion 9 of the optical pickup during the air flow generated when the optical disk 3 rotates. 13) and a vent 14 formed to reduce the amount of air moving toward the optical pickup by moving a portion of the air flow below the support surface 4. Therefore, the operation error of the optical pickup due to the influence of the air flow by the rotation of the optical disk is minimized to increase the stability of the operation, thereby promoting the high speed of the optical disk drive.

Description

Disc tray for optical disc drive {DISK TRAY FOR OPTICAL DISK DRIVE}

1 is a perspective view showing an optical disk drive having a disk tray;

2 is a plan view showing a conventional disc tray for an optical disc drive together with a turntable and an optical pickup;

3 is a cross-sectional view taken along line III-III shown in FIG. 2;

4 is a plan view visualizing the air flow generated by the optical disk rotation during the operation of the optical disk drive.

5 is a plan view showing the optical disc drive disk tray according to the present invention together with a turntable and an optical pickup;

FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5. FIG.

Explanation of symbols on major parts of drawings

1: optical disc drive 2,2 ': disc tray

3: optical disk 5: opening

7: optical pickup 9: moving part

12; 12a, 12b: air flow 13: barrier wall

14: vent

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk tray installed in an optical disk drive for writing or reading information by driving an optical disk which is an optical recording medium. The present invention relates to an optical disk having an improved structure in consideration of airflow during rotation of an optical disk. It relates to a disc tray for a drive.

Background Art Optical disk drives that write or read information using compact disk (CD) compact optical disks as optical recording media are well known. The optical disc drive generally has a disc tray 2 installed so as to float on the front of the drive body 1 as shown in FIG. The disc tray 2 is provided for loading and moving the optical disc 3 to a rotational position in the drive body or vice versa. The disc tray 2 has a support surface 4 partitioned in two stages concentrically so that the optical disc 3 can be located and seated according to its diameter, and along the radial direction at the center of the support surface 4. The opening 5 opened with a sufficient width is formed.

Referring to FIG. 2, which shows a conventional disc tray 2, the inner end of the opening 5, that is, the center of the support surface 4, is rotated by a spindle motor installed in the drive body 1. The driven turntable 6 is raised to lift and rotate the optical disc 3 mounted on the support surface 4, and at the same time, the optical pickup 7 reciprocates the radius openings 5. The light beam is scanned while moving. The optical pickup 7 supports the movable part 9 on which the objective lens 8 is mounted by a thin flexible elastic wire 10 and 10 'as shown in Fig. 3, so that an actuator (not shown) during recording or reproduction is shown. Fine move the target track of the optical disc 3 by finely moving the movable part 9 in the vertical and horizontal directions, and greatly increasing the radial direction along the guide members 11 and 11 'installed on both sides. Move to seek desired track.

In the optical disc drive as described above, since the movable portion 9 in the optical pickup 7 is supported by a thin and flexible elastic wire 10, 10 'and is relatively weak in impact, it is shaken by an external impact at least during a recording or reproducing operation. It is necessary to keep the movable part 9 securely so that there is no such thing.

On the other hand, the optical disk drive has recently been applied as a secondary memory device of a personal computer (personal computer) has been increasingly high speed as part of the performance improvement for the rapid processing of information. In particular, the CD-ROM drive that stores various characters and images has been advanced up to 40 times, where the optical disc is rotating at a very high speed of 9000 rpm.

In general, movement of frictional ambient air occurs around the rotating body. FIG. 4 shows the lower surface (recording surface) of the optical disk 3 as a result of the simulation under the same conditions as the high speed optical disk drive operating environment. And the flow of air flowing between the support surface 4 of the disc tray 2 is visualized by an arrow. Through this simulation, the larger the rotational speed of the optical disc 3, the stronger, and as a result, the optical pickup objective lens is severely disturbed.

The problem is that in the conventional optical disk drive, as shown in Fig. 3, the movable portion 9 of the optical pickup 7 is supported by the elastic wires 10 and 10 ', which is weak against impact, while the optical disk 3 is rotated at high speed. It is impacted by being exposed to a part of the air stream 12 moving by. That is, the movable part 9 may be shaken by shaking the moving air flow 12, whereby the focal position of the objective lens 8 is disturbed, thereby causing a problem of not only the noise of the recording or reproducing signal, but even an inoperable situation. will be. The problem is that the higher the rotational speed of the optical disc 3, the greater the frequency and degree thereof, and thus, the higher the speed of the optical disc drive is, of course, an obstacle.

Accordingly, an object of the present invention is to improve the stability of the recording or reproducing operation of the optical disk drive by at least partially controlling the flow of the air so that the optical pickup movable portion is not impacted from the moving air by the rotation of the optical disk, the optical disk drive disk To provide a tray.

It is also an object of the present invention to provide a disk tray for an optical disk drive that is improved to promote high speed of the optical disk drive by controlling the flow of the air at least partially so that the optical pickup moving part is not impacted from the air moving by the rotation of the optical disk. I will.

In achieving the above objects, there is provided a disc tray for an optical disc drive having a support surface for loading an optical disc and an opening opening corresponding to the optical pickup movable portion moving radially from the center of the support surface, wherein the optical disc rotates on the support surface. The optical pickup movable portion is formed in a structure capable of controlling the air flow so as not to be impacted by a part of the air flow formed when the air pick-up is made.

Accordingly, the present invention forms a blocking wall that can block a part of the air flow toward the optical pickup movable portion at one side edge of the opening closest to the support surface (bottom surface) of the disc tray for loading the optical disk. More preferably, the amount of air moving around the optical pickup is reduced by forming a vent to move a part of the air flow from the upper side of the support surface to the rear side at the position before the barrier wall.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 5 and 6 of the accompanying drawings. For convenience, these figures have been given the same reference numerals for parts corresponding or corresponding to those previously described.

In Fig. 5, reference numeral 1 denotes an optical disc drive body, and 2 'is an improved disc tray. The improved disc tray 2 ′ has a support surface 4 partitioned in two stages concentrically so that the optical disc 3 can be positioned and seated according to its diameter as usual, and at the center of the support surface 4. It has an opening 5 which is opened with a sufficient width along the radial direction, and according to the invention, the blocking wall 13 protrudes downward from the rear surface (bottom surface) of the support surface 4 along one edge of the opening 5. And an air vent 14 opened in a position close to the barrier wall 13 in the direction of rotation of the optical disc.

Here, the blocking wall 13 is located in the opening 5 of the disc tray 2 'in the air flow 12 moving below the lower surface (recording surface) when the optical disk 3 rotates as shown in FIG. The objective lens 8 of (7) is mounted, and a part of the air flow 12a directed to the movable portion 9 supported by the thin and flexible elastic wires 10 and 10 'is movable in the vertical and horizontal directions. It is formed to. It may be installed or added to another position of the disc tray 2 'as necessary.

According to such a blocking wall 13 structure, the air flow 12a of the air flow 12 moving in accordance with the rotation of the optical disc 3 is directed to the movable portion 9 of the optical pick-up 7 and the movable portion 9 is blocked. Is protected from being impacted by the airflow 12a. Therefore, the movable portion 9 is not shaken by the air flow 12a during the recording or reproducing operation, thereby achieving a stable operation.

On the other hand, the air vent 14 guides a part of the air flow 12b moving between the optical disc 3 and the disc tray 2 'to the rear side thereof on the disc tray 2' support surface 4, and thereby the optical pickup. (7) It is formed to reduce the amount of air directed to the movable portion (9). This vent 14 may also be installed or added in other locations.

According to the structure of the vent 14, the air flow 12b of a part of the air flow 12 moving in accordance with the rotation of the optical disc 3 is moved from the support surface 4 of the disc tray 2 'to the back side thereof. Can be. Therefore, it is possible to reduce the amount of air moving to the optical pickup (7) side, thereby improving the effect by the barrier wall 13 described above.

As described through the above embodiments, the present invention provides a barrier wall that protects the movable part from being impacted by the optical pickup, in particular, a part of the air flow generated when the optical disk rotates, and also moves toward the optical pickup. The present invention provides an improved disc tray having a vent for further reducing its stability.

Therefore, according to the present invention, the operation error of the optical pickup can be minimized due to the influence of the air flow due to the rotation of the optical disk, and the recording or reproducing operation can be stabilized, and the high speed of the optical disk drive can be promoted, thereby greatly improving its performance. There is an effect that the opportunity provided.

Claims (4)

An optical disc drive disc tray having a support surface for loading an optical disc and an opening opening corresponding to the optical pickup movable portion moving radially from the center of the support surface, and moved to the optical disc drive main body to carry and carry the optical disc. And a shielding wall formed around the optical pickup movable portion to reduce airflow due to the rotation of the optical disk to reach the optical pickup movable portion. The method of claim 1, The blocking wall is a disk tray for an optical disc drive, characterized in that formed on the back surface of the supporting surface. The method of claim 2, And a vent formed in the support surface so as to move another part of the air flow from the support surface to the back surface at the position before the barrier wall. The disk tray for an optical disc drive according to claim 2 or 3, wherein the blocking wall protrudes downward along one side edge of the opening opened in correspondence with the movement section of the optical pickup.

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