KR100598732B1 - Tray with Absorbing Sound Function - Google Patents

Abstract

The present invention relates to a tray of a disc drive device to reduce noise.

A tray having a sound absorbing function according to the present invention includes a tray for transporting a disk, and a sound absorbing member for absorbing and extinguishing noise generated on the tray bonded to the tray.

With this configuration, the tray having the sound absorption function of the present invention can minimize the noise generated inside the disk drive device by absorbing and extinguishing the noise around the disk which influences the noise inside the disk drive device.

Description

Tray with Absorbing Sound Function

The present invention relates to a disc drive device for recording or reproducing information on a recording medium, and more particularly, to a tray of a disc drive device for reducing noise.

Discs such as DVDs, which have a higher recording density than CDs, have already been generalized. In addition, the disk has been developed in a large capacity and high density trend up to the MOD (Magneto-Optical Disk) which records information by magnetic field modulation recording method, irradiates light to the recording surface and reproduces the information. . Today, disks and hard disks can accommodate large amounts of data, ranging from gigabytes to tens of gigabytes.

Along with this, a disk drive device has been speeded up to enable high-speed data transfer, and a 40-speed product has been developed in the case of a CD-ROM drive device. However, the high speed of the disc drive device exposes a number of problems, and the higher the speed, the more serious the noise problem appears.

In recent years, most of the time when users work with a computer mainly in the middle of the night is becoming sensitive to the noise generated by the disk drive. Therefore, in recent years, the demand for lower noise than the price has been amplified as a purchase condition of products at higher speeds.

In the disc drive, noise is mainly caused by the air flow in the drive caused by the rotation of the disc. Moreover, when the disk rotation speed is 8000 rpm or more, the aerodynamic noise becomes very large, and there is a limit in reducing the noise by a method such as control of air or a structure change in the driving device.

1 and 2 are diagrams showing the air velocity distribution in the disc drive device. 1 and 2, the color of the arrow indicates the speed of air. The darker the arrow, the greater the speed of the air. The direction of the arrow indicates the direction of air flow and the length of the arrow indicates the magnitude of the flow rate. As can be seen from FIGS. 1 and 2, the velocity and velocity gradient of air are greatest around the disk 1 rotating on the tray 10. Thus, noise is mainly generated around the disc 1. In particular, noise is mainly caused by friction and vortex between the disk 1 and the tray 10 having the largest speed and speed gradient in the disk drive and on the stepped side wall surface of the tray 10.

As the disk drive speed is increased to 32x, 40x or more, the noise of the product must be properly regulated in order to secure the reliability of the product.

In order to reduce the noise of the disk drive, as can be seen above, the noise around the disk 1 which drives the noise generated in the disk drive must be properly regulated. To this end, it is possible to consider a method of installing the sound absorbing member in the disk drive device, but the fiber absorbing member, which is widely used, is difficult to manage the dimensions and swells over time, and is attracted to the disk by air flow during rotation of the disk. It may interfere with the disk.

Accordingly, it is an object of the present invention to provide a tray having a sound absorption function for minimizing noise in a disc drive device.

In order to achieve the above object, the tray having a sound absorption function according to the present invention comprises a tray for transporting the disk; A sound absorbing member bonded to the disk receiving surface on the tray to absorb and dissipate the noise generated on the tray; The sound absorbing member is formed with an opening corresponding to the opening formed on the tray and joined to a flat portion of the disk receiving surface, and is vertically extended from an edge of the base portion to be bonded to a side portion of the disk receiving surface. It has a side wall rib part.

The sound absorbing member is made of a porous material.

The sound absorbing member is characterized in that the porous plastic.

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

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 3 to 5.

3 is an exploded perspective view showing a tray having a sound absorption function according to an embodiment of the present invention.

In the configuration of Figure 3, the tray having a sound absorption function according to the present invention is bonded to the disk receiving surface 11 and the disk receiving surface 11, the disk is accommodated between the front end 14 and the rear end 13 The sound absorbing member 12 is provided. The disk accommodating surface 11 is stepped lower than the front end 14 and the rear end 13 as an annular groove shape corresponding to the disk shape so that the disk is centered and stably received. An opening for allowing optical pickup (not shown) to access the disk between the disk receiving surface 11 and the rear end 13 and for securing an access space for the disk to be seated on the spindle motor (not shown). (6) is formed.

Sound absorbing member 12 serves to absorb the noise around the disk generated as the disk rotates to lower the noise. In particular, the sound absorbing member 12 is bonded to the disk receiving surface 11 to reduce the frictional noise of the air generated on the disk storage surface 11 to drive the noise generated on the tray, furthermore, the noise on the tray 100 Will be reduced. The sound absorbing member 12 is formed of a porous material such as porous plastic and bonded to the disk receiving surface 11. Here, the porous plastic is a polymer composite composed of a structure in which small plastic particles are collected and sintered so that a large number of pores are included therein so that the pore-coating material can freely enter and exit.

When the sound is absorbed and extinguished by the sound absorbing member 12 in detail as follows. As high-speed air spreads into the pores in the sound absorbing member 12, the surface area through which air flows in the sound absorbing member 12 increases, so noise energy is reflected from each other between the particles in the sound absorbing member 12, thereby losing friction. This is due to the reduced noise.

The sound absorption member 12 is shape | molded in the shape which captures the whole disk accommodation surface 11. To this end, the sound absorbing member 12 has an annular plate-shaped base portion 12a corresponding to the shape of the disk receiving surface 11, and side wall ribs 12b extending perpendicular to the edge of the base portion 12a. do. One side is cut from the center portion to the outer circumference of the base portion 12a so as to form the opening portion 6 so as to have the same shape as the opening portion 6 formed on the disk receiving surface 11. This base portion 12a is joined to the disk storage surface 11. The side wall ribs 12b are shaped into a shape corresponding to the side wall between the front end 14 and the disk receiving surface 11 and the side wall between the rear end 13 and the disk receiving surface 11 and thus the front end 14. And the side wall between the disk storage surface 11 and the side wall between the rear end 13 and the disk storage surface 11.

In the method of bonding the sound absorbing member 12 to the disk receiving surface 11, the sound absorbing member 12 may be bonded using an adhesive. In addition, the sound absorbing member 12 is placed on the disk receiving surface 11, and the pressure is applied to the sound absorbing member 11 to absorb the sound absorbing member 12 by the fusion bonding method by the temperature rise between the disk receiving surfaces 11. The member 12 can be joined to the disk storage surface 11.

4 shows a state in which the sound absorbing member 12 is bonded on the disk receiving surface 11.

FIG. 5 shows a disc drive device in which the tray of the present invention shown in FIGS. 3 and 4 is installed.

In the configuration of FIG. 5, the disc drive device of the present invention includes a tray 100 to which the sound absorbing member 12 is bonded, a mechanism base 20 on which the tray 100 is installed to linearly move, and a mechanism base 20. And a clamper 4 fixed to the clamper holder 2, and a clamper 4 mounted to the clamper holder 2. The disk 1 is seated on the sound absorbing member 12. The tray 100 is installed in the mechanism base 20 so as to be linearly movable, and the disk 1 is seated on the sound absorbing member 12 in a state in which the tray 100 is ejected outward from the mechanism base 20. When the disk 1 is seated, the tray 100 is transferred into the mechanism base 20 by the power of a load motor (not shown) driven by a user's pushing force to carry the disk 1 to an access position. do. When the disk 1 reaches the access position, the disk 1 is lifted by a spindle motor (not shown) installed below the disk 1. At this time, the clamper 4 serves to close and fix the disk 1 to the turntable of the spindle motor by the clamping force to be magnetically attached to the spindle motor. When the disc 1 is rotated in the playback mode or the recording mode, noise is generated by the air flow around the disc. At this time, the sound absorbing member 12 absorbs and dissipates the noise around the disk which has the greatest influence on the noise level in the disk drive, thereby lowering the noise in the disk drive.

On the other hand, as compared with the conventional flexible sound absorbing member, the porous plastic used as the material of the sound absorbing member 12 has a predetermined rigidity due to the material's characteristics, so that the flexible sound absorbing member such as swelling over time and swelling over time is easily provided. Overcome your shortcomings

As described above, the tray having the sound absorbing function according to the present invention absorbs and extinguishes the noise around the disk which influences the noise inside the disk drive device by joining the sound absorbing member made of a porous material to the disk receiving surface on the tray. The noise generated inside the drive unit can be minimized.

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.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows two-dimensional air velocity distribution in a conventional disc drive device.

2 is a view showing three-dimensional air velocity distribution in a conventional disk drive device.

Figure 3 is an exploded perspective view showing a tray having a sound absorption function according to an embodiment of the present invention.

4 is a perspective view of a tray showing a state in which the sound absorbing member shown in FIG. 3 is attached.

Fig. 5 is a perspective view of the disc drive device showing a state in which the tray is installed in the disc drive device in Fig. 3;

<Description of Symbols for Main Parts of Drawings>

1: disc 2: clamper holder

4: clamper 6: opening

10,100 tray 11: disk storage surface

12: sound absorbing member 12a: base portion

12b: side wall rib 13: rear end

14: shear portion 20: mechanism base

Claims (3)

A tray for transporting the disk; A sound absorbing member bonded to the disk receiving surface on the tray to absorb and dissipate the noise generated on the tray; The sound absorbing member is formed with an opening corresponding to the opening formed on the tray and joined to a flat portion of the disk receiving surface, and is vertically extended from an edge of the base portion to be bonded to a side portion of the disk receiving surface. A tray having a sound absorption function comprising a side wall rib portion. The method of claim 1, The sound absorbing member is a tray having a sound absorbing function, characterized in that made of a porous material. The method of claim 1, The sound absorbing member is a tray having a sound absorbing function, characterized in that the plastic plastic.