KR20000015442A - Disk driving device - Google Patents

Abstract

PURPOSE: A disk driving device is provided to reduce the disk vibration and noise caused during the driving of disk. CONSTITUTION: The disk driving device(2) is equipped with a disk tray(14) having a guide rib(18) to install the disk in the center of turntable and to prevent the displacement of the disk in the vertical setting of the disk. The disk driving device has features; that a vertical support(10) to install the disk in the center of turntable is removed; and that one side of the guide rib(18) is formed in the position having an angle(θ¬1) for the outer circumference side of disk placing surface(16), so that the disk can be located in the center of turntable. Thereby, it is possible to provide the disk driving device to reduce the disk vibration and noise.

Description

Disc Driver

The present invention relates to a disc drive device for driving an optical recording medium, and more particularly, to a disc drive device configured to reduce vibration and noise of a disc generated when a disc is rotated.

Usually, a disc drive device is provided with a tray for transferring a disc to an access position. That is, when the ejection of the tray is completed by the ejection mechanism of the disk drive, the disk is mounted on the tray, and then the disk mounted on the tray is transferred to the access position by the loading mechanism of the disk drive. . The operation mechanism of the disc drive device will be described by dividing the discharge completion time and the loading completion time. Ejection completion point refers to when the sled base is lowered by mechanical interaction when the tray in the disc drive is transported outward as much as possible. After ejection is complete, load the desired disc on top of the tray. When the tray is moved to the access position inside the disc drive, the sled base moves up-rising by mechanical interaction. This time is called loading completion time. When loading is complete, the tray is located on top of the turntable, and as the sled base rises, the spindle motor attached to the sled base also rises, raising the turntable attached to the spindle motor. Let's go. At this time, the turntable is seated on the inner diameter of the disk, and as the spindle motor rotates, the rotational force is transmitted to the disk via the turntable.

Referring to FIG. 1, a disc drive device according to the related art includes a tray 4 for transferring a disc 6 to an access position, and a vertical supporter 10 for supporting a vertical direction of the disc 6. . Vertical supporters (10) are formed on both sides of the disc drive device (2) to support the disc in the vertical direction. In detail, when the disc drive unit 2 is installed horizontally, the disc 6 is loaded on the disc drive unit 2 by being seated on a disc seating surface (not shown) formed on the tray 4. . However, when the disc drive device 2 is installed vertically, the disc 6 moves to the lower portion of the disc seating surface formed on the tray 4 by its own weight. In this case, the guide ribs 12 formed on the outer circumferential side of the disk seating surface (not shown) prevent the disk from being separated from the disk seating surface. At this time, when the tray 4 is loaded to the access position in the disc drive device 2, the disc may be prevented from being released from the disc seating surface by the guide rib 12, but the disc may be removed by the disc's own weight. As the inner diameter of the disk 6 and the turntable (not shown) do not coincide with the lower surface of the seating surface, the disk may be damaged, and the disk drive device 2 records information on the disk 6. / Play will not be performed. In order to solve this disadvantage, the vertical supporter 10 is formed on both sides of the disc drive device 2 so that the inner diameter of the disc 6 is stably seated on the turntable. That is, when the tray 4 is loaded while the disk 6 is moved to the lower part of the disk seating surface by its own weight at the time of loading of the tray 4, the outer circumference of the disk 6 of the vertical supporter 10 It moves along the disk support portion 10a and is loaded while maintaining its seated state on the disk seating surface. Referring to FIG. 2 in detail, when the disc is vertically set, the disc outer periphery moves along the disc support 10a of the vertical supporter 10. In this case, as shown in (a) of FIG. 2, a position where the outer circumference of the disc contacts the vertical supporter 10 is referred to as a first point P1. In addition, the disk outer periphery is moved to the second point P2 along the disk support 10a and then the loading reaches the completion point. That is, as shown in FIG. 2B, the uppermost position of the disc support 10a is called the second point P2. In this case, the vertical supporter 10 changes the position of the disk from the first point to the second point so that the disk can be loaded stably vertically and compensates for the center of the disk by a predetermined height h. You will. In addition, the spindle 4 (not shown) is lifted to a certain height when the tray 4 in which the disk 6 is housed is transferred to an access position in the disk drive and reaches a load completion point. Accordingly, the inner diameter of the disk 6 is seated on a turntable (not shown). In addition, the spindle motor (not shown) is lifted so that the disk 6 is brought into close contact with the turntable and clamped by mutual magnetic forces between the clamper (not shown) provided in the disc drive device 2 and the turntable. On the other hand, after the loading is completed, the disk is rotated at a relatively narrow distance between the vertical supporter 10 and the outer periphery of the disk 6 at the time of rotational rotation, the vibration and noise of the disk is generated by the flow of air generated by the rotation of the disk Done. This will be described with reference to FIG. 3. As shown in FIG. 3, since the flow of air is concentrated between the outer periphery of the disc 6 and the vertical supporters 10 formed at a relatively narrow distance, the flow of air generated at the time of rotation driving of the disc 6 is high. (I.e., high energy) impacts the vertical supporter 10 to generate a high level of noise. As a result, when the disc 6 rotates, the disc drive device generates noise that may cause discomfort to the user. That is, inside the disc drive device, the sound wave generated by the air flow according to the high speed rotation of the disc (that is, the sound wave generated by the difference in the pressure gradient of the air) is transmitted to the outside, thereby generating a relatively large noise. have. In addition, the disk vibrates because the flow of air generated during the rotational drive of the disk impinges on the vertical supporter 10 at a high speed (ie, high energy). This makes it difficult to control servos such as focusing and tracking during recording / reproducing of the disc due to the pressure gradient of air between the disc outer periphery and the vertical supporter 10 when the disc is rotated. It is becoming. In particular, as the disk becomes denser, noise in the disk drive and vibration of the disk caused by the high-speed rotation of the disk are emerging as problems to be solved.

Accordingly, an object of the present invention is to provide a disk drive device configured to reduce vibrations and noise of a disk generated when the disk is rotated.

1 is a view showing a disk drive device according to the prior art.

2 is a view for explaining the operation of the vertical supporter.

3 is a view showing air flow in the vertical supporter of FIG.

4 is a view showing a disc drive device according to the present invention.

5 is an enlarged plan view of portion A of FIG. 4;

<Description of Symbols for Main Parts of Drawings>

2: disc drive device 4,14: disc tray

6: disk 10: vertical supporter

12,18: guide rib 16: disk seating surface

In order to achieve the above object, the disc drive device according to the present invention includes a disc tray having guide ribs formed to prevent the disc from being detached when the disc is vertically set, and the disc to be centered on the turntable.

Other objects and features of the present invention other than the above object will become apparent from the description of the embodiments with reference to the accompanying drawings.

Referring to Figure 4 will be described a preferred embodiment of the present invention.

Referring to FIG. 4, a disc drive device according to the present invention includes a disc tray 14 having guide ribs 18 configured to center the disc on a turntable as well as to prevent the disc from being detached when the disc is vertically set. . The guide rib 18 is formed at a predetermined angle θ 'with respect to the outer circumferential side of the disk seating surface as shown in FIG. 5 to prevent the disk from being released during vertical setting, This prevents the disk from moving below the disk seating surface. That is, when the disc drive device is set vertically, the guide rib 18 is formed to have a predetermined height h 'so that the disc is centered on the turntable only by mounting the disc to the guide rib 18. The predetermined height h 'means the height h equal to the distance the disk center is moved by the conventional vertical supporter. Accordingly, in the disc drive device of the present invention, the vertical supporter has a structure in which the vertical supporter is removed, and the guide rib 18 has a predetermined angle θ 'with the outer circumferential side of the disc seating surface to perform the function of the conventional vertical supporter. It is formed to have a structure to compensate for the height of the disk center. In this case, the predetermined angle θ 'between the guide rib 18 and the outer circumferential side of the disk seating surface means an angle at which h ′ can be adjusted. Accordingly, in the disc drive device according to the present invention, after the disc is loaded by seating the disc on the guide ribs 18, the air generated during the rotational drive of the disc is smoothly made, thereby causing the disc to vibrate and the disc drive device. The noise generated is reduced. In fact, the disc drive device according to the present invention can reduce the noise level by about 0.8-1 dB. On the other hand, by adjusting the vertical center axis of the disk and the angle of the guide ribs 18 (eg, 90 °; θ), the outer circumferential angle θ 'between the guide ribs 18 and the disk seating surface can be adjusted. Will be. For example, when the vertical center axis and the angle θ of the second and third guide ribs 18b and 18c or the first and fourth guide ribs 18a and 18d are reduced, the disc is seated by the disc itself. Since the distance to move to the bottom of the surface (that is, the height of the disk; h ') can be reduced, the angle?' Between the outer peripheral side of the disk seating surface and the guide rib may be set small. Due to this, the disc drive device according to the present invention will facilitate the manufacture of the guide ribs.

As described above, the disc drive device according to the present invention forms a guide rib at a position pulled by a predetermined angle (θ ') with respect to the outer peripheral side of the disc seating surface to perform a function of a conventional vertical supporter, thereby providing a conventional vertical supporter. Since it can be removed, there is an advantage to reduce the vibration of the disk and the noise in the disk drive device.

In addition, the disc drive device according to the present invention adjusts the angle θ 'between the outer circumferential side of the disc seating surface and the guide rib by adjusting the angle θ of the guide ribs with respect to the vertical center axis of the disc. There is an advantage that can be easily produced.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (4)

And a disc tray having guide ribs configured to prevent the disc from being detached when the disc is vertically set, and the disc to be centered on the turntable. The method of claim 1, And a vertical supporter for centering the disk on the turntable. The method of claim 1, And one side of the guide rib is formed at a predetermined angle (θ ') with respect to the outer circumferential side of the disk seating surface so that the disk is centered on the turntable. The method of claim 1, And adjusting the angle [theta] 'between the outer circumferential side of the disk seating surface and one side of the guide rib by adjusting the angle [theta] between the vertical center axis of the disk and the guide ribs.