KR100375140B1 - Cover sealing device for hard disk drive - Google Patents

Abstract

PURPOSE: A device for sealing a cover of a hard disk drive is provided to improve sealing effect of the hard disk drive and to remove outgassing caused by utilization of bond. CONSTITUTION: A device for sealing a cover of a hard disk drive includes a gasket(100) that is composed of a sealing member(71) and a sealing metal(60). The sealing member has a sealing rail for sealing a gap between the hard disk drive cover(9) and a base(12) when the cover and base are combined with each other. The sealing metal has a shape corresponding to the sealing member in order to increase sealing effect of the sealing member. The sealing member is made of EPDM. The sealing member is placed on the sealing metal.

Description

COVER SEALING DEVICE FOR HARD DISK DRIVE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover sealing device of a hard disk drive, and more particularly to a sealing device for pressing and sealing a disk using a gasket when assembling a base and a cover in which parts are embedded. will be.

A hard disk drive, a computer auxiliary storage device, is a high reliability product in which the assembly environment is assembled at an air cleanness class of 100 or less.

Since the hard disk drive uses a floating head while maintaining a very low flying height on a recording medium that rotates at high speed for information recording or reproducing, the head and the recording medium may be separated by very small dust. Scratches or crashes can occur, resulting in data loss, one of the product's fatal defects, and making data recording and playback impossible.

Therefore, in the assembling process of the hard disk drive, the apparatus of the hard disk drive is first washed before assembling, and the semi-assembly is also cleaned and reassembled if necessary.

In addition, in order to minimize dust generation in the assembly process, the material of the screw used for the joining between the instruments is made of stainless steel, or the dust generated by the wear between the metals after screw assembly is clean air. Considerable attention is paid to the process, such as blowing it with air or wiping off the dust with a cotton swab moistened with a cleaning solution if necessary.

Even with this care, once the dust is generated, the visible dust can be removed, but small dust invisible to the naked eye is difficult to remove, and even if blown clean air, it is impossible to remove the dust completely.

In addition, in the case of dust generated after assembling the head and the recording medium, great care should be taken because the generated dust may contaminate the head or the recording medium.

Therefore, the best way is not to generate dust, but it is difficult to manage when assembling the instrument.

As described above, the hard disk drive is very sensitive to foreign matters such as moisture, and if foreign matters are introduced therein, it may cause damage to the disk and the head, thereby preventing moisture from entering the screws. Fasteners for tightening, a breather filter for regulating pressure on the outside and the inside, and a gasket for performing a sealing function between the cover and the base.

As shown in Figs. 1 and 2, in the sealing device of a conventional hard disk drive, a disk 2 rotating at high speed to mount a gasket 10 for sealing between the body base 12 and the cover 9 is shown. Is equipped with a magnetic head (3) for recording or reading data recorded on the disc (2) track, and is equipped with an actuator (5) driven by a voice coil motor; A main body 7 having a lead surface for leading the adhesive portion at the contact surface, a cover 9 for covering the main body 7, and a rectangular shape widened to be bonded to the lead surface of the main body 7. It is composed of a gasket 10 and the cover 9 and the main body 7 composed of a material having elasticity and then screwed to fasten it firmly.

The sealing device of the hard disk drive includes a gasket (10) having adhesives on upper and lower surfaces between the main body (7) and the cover (9) on the lead surface of the main body (7) and the cover (9). 10) was bonded, and then assembled using a screw.

When the screw is tightened and loosened in the above manner, dust is generated due to friction with the screw holes 9a, 10a, and 12a, or when using an electric screwdriver, the dust generated on the plate is a hard disk that requires cleanness. There is a problem that causes fatal damage inside the drive.

In addition, the gasket used in the prior art has a lot of performance changes depending on its material, thickness and density, the flow rate of moisture, such as the gasket of the conventional PORON material used varies greatly depending on the thickness and density.

In other words, if the density of poron gasket is high, the sealing effect is improved, but the price is expensive. If the thickness is thick, the screw is screwed only on the square corners of the cover and the base, so that the middle part of the edge and the edge are tightly adhered. The problem arises.

In addition, since the PORON gasket has no place to be used except for the part attached to the cover and the base, it is wasteful, and in order to attach it correctly, there is a need to form a separate groove or guide in the cover and the base.

Moreover, in order to improve adhesion, outgassing is likely to occur at high temperature and high humidity due to the use of a bond, and it is impossible to reuse when it is not attached to the correct position even during assembly.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to prevent waste caused by the reuse of the existing poron material gasket once used.

Another object of the present invention is to double the sealing effect by installing two rail-type sealing member up and down in order to prevent foreign matters from entering the interior from the perspective of the sealing function.

Another object of the present invention is to double the sealing effect of the gasket evenly as a whole by installing a gasket and a sealing metal of a corresponding shape.

In order to achieve the above object, the present invention is a cover sealing device of a hard disk drive, when the cover and the base of the hard disk drive, the sealing member and the sealing member formed with a sealing rail for sealing between the two In order to double the sealing effect of the sealing member is characterized in that the installation of a gasket composed of a sealing metal of a corresponding shape.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention ;

It should be noted that the same parts in the figures refer to the same reference numerals wherever possible.

As shown in FIGS. 3 and 4, the gasket 100 used as the cover sealing device of the present invention is installed between the cover 9 and the base 12 in the same manner as before, and the gasket 100 is positive. In order to double the sealing effect of the sealing member 71 and the sealing member 71 in which the sealing rail 71a is formed in order to seal the gaps 9 and 12, the sealing metal 60 of the shape corresponding to the sealing member. It is composed.

The sealing member 71 has a shape in which the sealing rail 71a protrudes in both directions, and is installed in the up and down direction based on the sealing metal 60. When sealing is done with only one existing gasket, if the base 9 or the cover 12 has a flaw or scratch marks, it is installed in the vertical direction in preparation for the case where the sealing is not perfect. It is.

The sealing members (71, 72) is to improve the sealing effect by using a rubber material called EPDM to escape the technology using the existing poron (poron) material.

In addition, the encapsulated metal 60 is assembled by fastening a screw to a fastening hole 100a formed in a square corner portion in order to assemble the cover 9 and the base 12. The central part is provided with a sealing metal 60 between the sealing member 71 so that the fastening force is evenly transmitted as a whole to remove the gap generated due to the relatively less fastening force of the screw in the middle portion thereof. .

As described above, in the conventional gasket, the material is made of a rubber material called EPDM, and the shape is formed in both directions so as to protrude in the longitudinal direction of the sealing rail, and installed two at the top and bottom to double the sealing effect of the gasket. In order to add a sealing metal in order to further improve the sealing effect of the hard disk drive, and to achieve the dual effect of eliminating the outgassing due to the use of bond.

1 is an exploded perspective view showing a cover sealing device of a hard disk drive according to a conventional embodiment

2 is a cross-sectional view of the conventional cover and base after coupling

Figure 3 is an exploded perspective view showing a cover sealing device of a hard disk drive according to an embodiment of the present invention

4 is a cross-sectional view after the cover and the base of the present invention

Explanation of symbols for main parts of the drawings

4: coil 5: actuator

9: cover 12: base

100: gasket

Claims (4)

In the cover sealing device of a hard disk drive, When combining the cover 9 and the base 12 of the hard disk drive, to double the sealing effect of the sealing member 71 and the sealing member 71 formed with a sealing rail (71a) to seal between the two Cover sealing device for a hard disk drive, characterized in that for installing the gasket 100 consisting of a sealing member (71) and a sealing metal (60) of a corresponding shape. The method of claim 1, Cover sealing device of the hard disk drive, characterized in that the material of the sealing member 71 EPDM. The method of claim 1, Cover sealing device of the hard disk drive, characterized in that the sealing rail (71a) of the sealing member 71 is formed in both. The method of claim 1, The gasket 100 is a sealing member of the hard disk drive, characterized in that the sealing member 71 is installed in the vertical direction of the sealing metal (60).