KR100263046B1 - Magnetic head parking apparatus in hdd - Google Patents

Abstract

PURPOSE: A parking device for a magnetic head is provided to increase storing capacity through mounting the magnetic head in a comb at an outside of a hard disk for using a magnetic head parking zone as a data zone. CONSTITUTION: A spindle motor(12) rotates a hard disk(14) at a specific rpm(revolutions per minute). A magnetic head(20) records and reproduces data by lifting when the hard disk is rotated. A head gimbal(22) supports the magnetic head. An actuator(18) contains a latch screw(24) attached to a magnet. A rotation shaft(16) supports the actuator. A VCM(Voice Coil Motor)(30) supplies driving force for rotating the actuator. A comb(32) is fixed at an identified height with the hard disk for outside of the hard disk to be hung to the head gimbal. Therefore, the magnetic head is parked on outside of the hard disk while not using an HDD(Hard Disk Drive). The spindle motor, the rotation shaft, the VCM, and the comb are fixed on a base(10).

Description

Magnetic Head Parking Device for Hard Disk Drives

1 is a schematic diagram of a hard disk drive according to the present invention.

2 is a perspective view of the comb of FIG. 1.

* Explanation of symbols for the main parts of the drawings

10: Base 12: Spindle Motor

14 hard disk 16 pivot

18: actuator 20: magnetic head

22: head gimbal 24: latch screw

26: outer crush stop 28: inner crush stop

30: voice coil motor 32: com

34: seating portion 36: hole

40: screw

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard disk drive used as an auxiliary memory device of a computer, and more particularly, to an apparatus for seating and fixing a magnetic head to the outside of a hard disk in advance when the hard disk drive is not in use.

Hard disk drives currently on the market are suspended with magnetic contacts on the hard disk surface when not in use. When the magnetic head remains in contact with the hard disk surface and power is supplied to the spindle motor to reach a certain rotational speed, the magnetic head floats on the hard disk surface. At this time, when the magnetic head and the hard disk are rotated in contact with each other during the time before the injury, the scratches on the surface of the disk or the magnetic head and the hard disk come into contact with each other, resulting in powder. These dusts have a number of adverse effects on the magnetic head injured and flying to each data area, and the scratches have a fatal effect on the recording and reproducing of the data.

In addition, when the magnetic head and the hard disk are in contact with each other for a long time, or in a state of high temperature and high humidity, the magnetic head and the hard disk are stuck together so that the spindle motor does not rotate when the power is supplied.

Hard disk drives currently in the market place the edge of the slider on the edge of the slider due to the tension of the gimbal of the magnetic head when the magnetic head rests on the hard disk surface during assembly. The stamped portion may occur when the magnetic head cannot read or write.

In addition, in the conventional hard disk drive, an area in which the magnetic head can be parked on the hard disk, that is, a parking zone must be secured, thereby reducing the read / write space on the hard disk surface.

Accordingly, an object of the present invention is to use a magnetic head parking zone of an existing drive as a data zone as the magnetic head is seated in a comb spaced at a predetermined distance from the outside of the hard disk, thereby increasing the storage capacity. To provide.

Another object of the present invention is to provide a magnetic head parking apparatus of a hard disk drive in which a magnetic head and a hard disk are stuck together so that the spindle motor does not rotate (aka stiction phenomenon).

Still another object of the present invention is to provide a magnetic head parking apparatus of a hard disk drive, which prevents the hard disk from being taken by the tension of the head gimbal.

According to the above objects, the present invention provides a hard disk in which data is recorded, a spindle motor for rotating the hard disk at a predetermined speed, and a predetermined height when the hard disk is rotated at a predetermined speed by the spindle motor. A magnetic head which floats and records or reproduces data, and a head gimbal supporting the magnetic head, and at the other end, an actuator having a latch screw that adheres well to the magnet; a pivot shaft for rotatably supporting the actuator; A voice coil motor for providing a driving force for the actuator to be supported and rotated on the pivot shaft, a comb having a seating portion for parking the magnetic head on the outside of the hard disk when the hard disk drive is not in use, and the spindle The motor, the pivot shaft, the voice coil motor, and the comb are fixed to predetermined positions, respectively. Is characterized in that composed of a base.

Hereinafter, preferred embodiments of the present invention will be described in detail with the accompanying drawings. It should be noted that the same parts in the figures represent the same reference signs wherever possible.

In the magnetic head parking apparatus of the hard disk drive according to the present invention, as shown in FIGS. 1 and 2, a hard disk 14 on which data is recorded, and a spindle for rotating the hard disk 14 at a predetermined speed. The magnetic head 20 and the magnetic head 20 for recording or reproducing data by floating at a predetermined height when the hard disk 14 rotates at a predetermined speed by the motor 12 and the spindle motor 12. And a head gimbal 22 supporting the actuator, and an actuator 18 having a latch screw 24 attached to the magnet at the other end thereof, and a pivot shaft 16 rotatably supporting the actuator 18. And the voice coil motor 30 which provides a driving force for the actuator 18 to be supported and rotated on the pivot shaft 16, and the magnetic head 20 when the hard disk drive is not in use. Remind to park outside The right side of the hard disk 14 (with respect to the boy coil motor 30) is fixed with a screw 40 at the same height as the hard disk 14 so that the head gimbal 22 can be caught, and a tapered seat A comb 32 having a 34 and a base 10 to which the spindle motor 12, the pivot shaft 16, the voice coil motor 30 and the comb 32 are fixed at predetermined positions, respectively. Is curved into

As shown in FIG. 2, the comb 32 (comb) has a thickness such that the magnetic head 20 and the magnetic head 20 do not stick together. The front side of the comb 32 is similar to the hard disk 14 and its thickness (approximately 0.8 mm) and the rear side is tapered slightly thicker than the front side. The comb 32 also has a hole 36 through which the screw 40 penetrates to fix it to the base 10. The comb 32 is fixed when the actuator 18 is fixed. The fixing method of the comb 32 forms a screw hole in the bottom of the base 10 and assembles a screw 40 passing through the hole 36 through the comb 32 in the screw hole.

In the magnetic head parking apparatus of the hard disk drive according to the present invention configured as described above, as shown in FIG. 1, the spindle motor 12 is fixed to a predetermined position of the base 10, and the spindle motor 12 The hard disk 14 is fixed. The actuator 18 and the comb 32 are fixed to a predetermined position of the base 10. At this time, the comb 32 should match the height of the hard disk 14, and the separation distance between the hard disk 14 and the comb 32 is approximately 1 to 2 mm.

In order to implement this system, some measures are required in circuit. First, when the power is turned off in the currently used auto parking system, the magnetic head 20 is driven by the back electromotive force. In the present invention, the parking is supplied to the opposite current of the counter electromotive force to the voice coil motor 30 so that the magnetic head 20 can go out without entering the inside of the hard disk 14. .

When the spindle motor 12 is stopped at the time of power-off in the above process, since the hard disk 14 is rotated in the half direction, the magnetic head 20 is pulled into the hard disk 14. . Therefore, in consideration of this force, it is necessary to supply the voice coil motor 30 with a current that the magnetic head 20 can escape to the outside of the hard disk 14 as much as possible.

In the above process, when the magnetic head 20 extends to the outside of the hard disk 14 as much as possible, the latch screw 24 is assembled to the other end of the actuator 18, and the right edge of the voice coil motor 30 is provided. The outer crash stop 26 (outer crash stop) containing permanent magnets is installed in the portion (see FIG. 1) so that the head gimbal 22 is caught over the seat 34 of the comb 32. By the magnetic force of the magnet so that the magnetic head 20 can escape to the outside of the hard disk 14 as much as possible.

At power-on, after the spindle motor 12 rotates, the magnetic head 20 can be loaded onto the hard disk 14, that is, the strength of the magnetic force of the permanent magnet of the outer crush stop 26 is released. Power to the voice coil motor (30). When the magnetic head 20 is placed on the surface of the hard disk 14, the spindle motor 12 is rotated so that the magnetic head 20 does not touch the surface of the hard disk 14 at all and floats immediately. .

When the magnetic head 20 enters the inside of the hard disk 14, the inner crush stop 28 is placed on the right side of the voice coil motor 30 so that the magnetic head 20 does not touch the hub of the spindle motor 12. It is fixed to prevent the magnetic head 20 from being damaged. In this way, the parking zone of the existing hard disk 14 can be used as the data zone.

As described above, in the magnetic head parking apparatus of the hard disk drive, the magnetic head is parked outside the hard disk, thereby preventing the stiction, and the parking zone of the hard disk can be used as the data zone. This has the effect of increasing the storage capacity of the data.

Claims (4)

An actuator having a head gimbal including a magnetic head for recording or reproducing data by floating a hard disk on a predetermined height at one end thereof, and having a latch screw at the other end thereof, and rotating around a pivot axis; In the hard disk drive including a voice coil motor for providing a driving force to rotate about the actuator's pivot axis, A comb having a tapered seat 34 for hanging the head gimbal 22 to park the at least one or more magnetic heads 20 in the outer region of the hard disk when the hard disk drive is inactive. 32) Magnetic head parking device of the hard disk drive, characterized in that the fastening on the base 10 toward the hard disk using a screw. The method of claim 1, The mounting portion 34 of the comb 32 has a thickness such that the first magnetic head and the second magnetic head do not stick to each other when the head gimbal 22 is seated. Head parking device. The method of claim 1, The tip of the seating portion (34) of the comb (32) is similar in thickness to the hard disk (14), the rear end of the magnetic head parking device of the hard disk drive, characterized in that the tapered shape is relatively thicker than the tip. The method of claim 1, The seating portion (34) provided in the comb (32) is at least one magnetic head parking device of the hard disk drive, characterized in that the plurality is formed in a stacked position.