KR100271612B1 - Flexible printed circuit holder for hard disk drive - Google Patents

Abstract

PURPOSE: A device for fixing an FPC(Flexible Printed Circuit) of an HDD(Hard Disk Drive) is provided to fix the FPC on an arm side of an actuator, and to use a holder for forming a loop. Therefore, it is possible to prevent an outgassing, and to prevent a disk defection or a data loss. CONSTITUTION: An FPC(Flexible Printed Circuit)(30) connects an HDD(Hard Disk Drive) head with a PCB(Printed Circuit Board). A screw is used to combine with a holder in order to fix one end of the FPC(30) on one side of an arm(11). The holder forms protuberance parts to both edges of a body in order to fix the one end of the FPC(30) on the one side of the arm(11). Holes combined with the screw are formed on both sides of the holder. The FPC(30) is fixed between the protuberance parts.

Description

FLEXIBLE PRINTED CIRCUIT HOLDER FOR HARD DISK DRIVE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flexible printed circuit (FPC) fixing device for a hard disk drive. In particular, the present invention relates to a flexible printed circuit connecting an actuator and an electric circuit when the actuator moves a data zone. The present invention relates to a flexible printed circuit holding device that uses a holder on a supporting plate in such a way as to form a loop while minimizing bias force.

As shown in FIG. 1, a hard disk drive (HDD), which is a secondary memory device of a computer, is composed of an electronic device and a mechanical device, and converts digital electronic pulses into a more permanent magnetic field to record / reproduce data. It is a memory device.

Such a hard disk drive includes a disk (38) for recording and storing data, and a magnetic head (13: Magnetic) for recording data on the disk (38) and reproducing or reading recorded data. Head, a spindle motor 36 for rotating the disk 38 at high speed, and an actuator for allowing the magnetic head 13 to access data on the disk 38. (10: actuator), a printed circuit board assembly (PCBA) for controlling them, and an interface for connecting the drive to the computer main body.

Referring to the actuator in more detail with reference to FIGS. 2 and 3, at one end of the actuator 10, a magnetic head for recording or reading data recorded on a track of a disk rotating at a high speed by a spindle motor ( 13) is installed. The magnetic head 13 is fixed to the arm 11 by suspension 12.

A central pivot of the actuator 10 is provided with a pivot 14, which is composed of a pivot screw and a pivot bearing, which is a rotational center of the actuator 10.

The voice coil 15 for winding the actuator 10 to the parking zone 34 and the data zone 32 is wound on the other side of the actuator 10 a plurality of times. 16: bobbin), the iron piece 17 is provided at the end of the blade bobbin 16.

Referring to the operation of the configured hard disk drive as described above, when the power of the drive is "on", the spindle motor rotates at a constant circumferential speed, and thus the disk fixed to the spindle motor also rotates at a constant speed. Subsequently, when the disk rotates at a high speed, the magnetic head 13 rises to a certain height due to the pressure of the air film generated on the surface of the disk.

In this state, the head 13 moves to a track position on the disc, and the drive sends a signal to the host computer that the drive is ready to execute a command through the interface.

When read / write information is input while the drive is ready for operation, the actuator 10 is rotated about the pivot 14 according to the position and speed signals of the control circuit part, and the tip of the actuator 10 is rotated. The read / write head 13 fixed at the end is moved to a desired position (constant track) on the disc.

Thereafter, the read / write circuit portion causes the head 13 to perform a read / write operation. At this time, the position and speed of the magnetic head 13 are controlled by the control circuit unit even during the read / write operation.

In the hard disk drive operating as described above, a signal is connected between a preamplifier connected to a signal cable of a magnetic head 13 installed in the actuator 10 (connected from the magnetic head through the suspension to the arm) and a printed circuit board installed in the body base. Connect flexible printed circuits (30: circuit-coated over film-like material) for delivery.

Conventionally, in order to connect the flexible printed circuit (FBC) to the side of the arm, after applying or attaching a bond and adhesive or double-sided tape to one side of the flexible printed circuit 30, Fixed to the side of the arm.

However, as described above, a hard disk drive, which is a computer auxiliary storage device, is a high reliability product in which an assembly environment is assembled at or below air class 100. 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. Scratch or crash can occur, resulting in data loss, one of the fatal defects of the product, and also making data recording and playback impossible.

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

In addition, in order to minimize dust generation in the assembly process, the material of the screw used for joining the equipment is made of stainless steel, or dust generated by 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.

When the above method is used, a large amount of gas is generated by the high temperature heat generated when the hard disk drive is driven because bond and adhesive or double-sided tape is used to fix the flexible printed circuit to the side of the arm. This results in outgassing, which causes malfunction of the magnetic head of the actuator, damages data on the disk, and shortens the life of the hard disk drive.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to install a holder independently manufactured to form a loop of a flexible printed circuit on an arm, thereby preventing the occurrence of gas generated during bond use. Provides a flexible printed circuit lock to prevent.

Another object of the present invention is to provide a flexible printed circuit fixing device which minimizes the bias force by forming a loop of a flexible printed circuit using an independently manufactured holder.

In order to achieve the above object, the present invention is characterized in that the holder is fastened by using a screw to secure one end of the flexible printed circuit connecting the actuator and the printed circuit board of the hard disk drive to one side of the arm. .

1 is a perspective view showing a state in which a flexible printed circuit of a hard disk drive according to a conventional embodiment is installed on an arm.

2 is a plan view of a main part showing a state in which a flexible printed circuit of a hard disk drive according to an exemplary embodiment is attached to an arm.

3 is a plan view showing main parts of a flexible printed circuit of a hard disk drive according to a preferred embodiment of the present invention attached to an arm by a holder;

Figure 4 is a perspective view showing a holder for fixing a flexible printed circuit according to an embodiment of the present invention.

5 is a perspective view showing a state in which a flexible printed circuit according to an embodiment of the present invention is fixed to a holder.

* Explanation of symbols for main parts of the drawings

1: holder for fixing a flexible printed circuit 1b, 1c: protrusion

1d, 1e: screw insertion hole 10: actuator

11: arm 30: flexible printed circuit

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention; First, in adding reference numerals to the components of each drawing, the same components have the same reference numerals even though they are shown in different drawings.

In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. As shown in FIG. 3, the present invention relates to a flexible printed circuit 30 that connects an actuator 10 of a hard disk drive to a printed circuit board (not shown) located below the base 40. A holder 1 is fixed to fix one end to the side of the arm 11.

As shown in FIG. 4, the flexible printed circuit holder 1 has protrusions 1b on both side edges of one side of the body 1a having a hexahedron shape so as to be easily fixed to the side of the arm 11. 1c is protruded, and holes 1d and 1e are formed at the other side so that the screw can be fastened. The holes 1d and 1e are formed on the upper and lower sides so that when one end of the flexible printed circuit 30 is fastened to the holder 1 by screws S, the holes 1d and 1e are tightened in both directions.

Further, the protrusions 1b and 1c formed at one edge portion of the holder 1 are formed at both sides to be inserted into the holes of the flexible printed circuit 30 to be more firmly fixed. 5 shows that the flexible printed circuit 30 is fixed to the holder 1 according to the present invention. In FIG. 5, the holder 1 and the flexible printed circuit 30 are fixed to one side of the arm by screws S, and one end of the flexible printed circuit 30 is held by the protrusions 1b and 1c. It shows what is settled in (1). In this case, one end of the flexible printed circuit 30 is placed between the protrusions 1b and 1c to be restrained.

As described above, the flexible printed circuit 30 is positioned in a loop type by fastening the holder 1 of a predetermined shape to the side of the arm 11 to minimize the biasing force of the actuator.

As described above, the present invention prevents the outgassing by using the holder independently manufactured without using double-sided tape or adhesive to fix the flexible printed circuit to the arm side of the actuator and form a loop. Therefore, it prevents the disk and the magnetic head from being contaminated, which is very effective in preventing fatal disk defect or data damage. On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, it is obvious to those skilled in the art that various modifications are possible without departing from the scope of the invention.

Claims (1)

In connecting the flexible printed circuit connecting the actuator and the electronic circuit board of the hard disk drive to the side of the arm of the actuator, one end of the flexible printed circuit 30 connecting the head of the hard disk drive and the printed circuit board is arm. The holder 1 is fastened by using a screw S to fix to one side of the 11, and the holder 1 fixes one end of the flexible printed circuit 30 to one side of the arm 11. In order to form the projections 1b and 1c at both corners of the body 1a, holes 1d and 1e for fastening the screw are formed at two positions on both sides of the holder 1 so that the flexible printing is performed. Flexible circuit fixing device of the hard disk drive, characterized in that the circuit 30 is placed between the protrusions (1b, 1c) fixed.