JPH09231705A - Magnetic head slider - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixed magnetic recording apparatus in which there is no fear of a head crash and whose reliability is high, concerning a magnetic head slider in the recording apparatus. SOLUTION: A groove 3 through which an air current generated by the rotation of a disk 2 passes, is formed on the bottom face of a magnetic head slider 1 which faces the disk 2. The groove 3 is formed in such a way that the opening area of the inflow port of the air current is nearly equal to that of its outflow port and that its central part becomes thin. The flow velocity of the air current is large in the central part on the bottom face of the magnetic head slider 1. Thereby, a negative pressure is generated between the magnetic head slider and the disk 2, the forcible contact of the head slider 1 with the turning disk 2 is kept, and a recording and reproducing operation is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head slider of a fixed magnetic recording device.

[0002]

2. Description of the Related Art In a conventional magnetic head slider, a lift force due to an air flow caused by the rotation of a disk balances with a pressing force of a suspension arm that supports the magnetic head slider, so that the magnetic head slider is slightly spaced from the disk surface. It is a structure that emerges. In this configuration, if the pressing force of the suspension is increased in order to increase the recording density, the damage at the time of starting and stopping the rotation of the disk, that is, at the time of CSS (contact start stop) increases. Therefore, in order to reduce the pressing force of the suspension, a device that generates a negative pressure between the magnetic head slider and the disk has been developed.

[0003]

However, in the above-mentioned conventional structure, as long as the magnetic head slider is floating, there is a risk that the waviness and projections of the disk may cause a crash and damage the disk and the magnetic head slider.

[0004]

In order to solve the above-mentioned problems, the present invention makes a magnetic head slider smaller and lighter and devises the shape of a groove formed on a surface facing a disk through which an air flow passes. By doing so, a negative pressure is generated between the magnetic head slider and the disk, and recording / reproduction is performed while the magnetic head slider is forcibly brought into contact with the disk.

Accordingly, it is an object of the present invention to provide a highly reliable fixed magnetic recording apparatus without the risk of head crash.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a magnetic head slider comprising a magnetic head and a groove through which an air flow generated by the rotation of the disk passes on a surface facing the disk. The groove is formed such that the opening areas of the air flow inlet and the air outlet are substantially equal to each other and the central portion of the groove is thin so that a negative pressure is generated between the magnetic head slider and the disk. At the very least, the fixed magnetic recording device is supported by the main body of the fixed magnetic recording device so that forced contact is maintained between the entire surface and the rotating disk.

By making the magnetic head slider of this structure smaller and lighter than the conventional floating type, recording and reproduction can be performed without friction problems even when the magnetic head slider is in contact with the disk. be able to. Therefore,
The risk of head crash is eliminated, and in particular, even if the peripheral speed of the disk or the skew angle changes, the magnetic head slider can maintain stable contact without floating from the disk.

An embodiment of the invention described in claim 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a magnetic head slider showing an embodiment of the present invention.

In the figure, reference numeral 1 is a magnetic head slider supported by a suspension arm (not shown), and the magnetic head is held on the bottom surface facing the disk 2. The magnetic head slider 1 is made smaller and lighter than the conventional flying type.

On the bottom surface of the magnetic head slider 1, there is formed a groove 3 through which an air flow generated when the disk 2 rotates in the direction of arrow a passes. The groove 3 is formed into a medium-thin shape by grinding using a precision wafer processing technique so that the width of the central portion becomes gradually smaller than the inlet and outlet of the air flow. There is.

Here, when the disk 2 rotates and the air flow passes through the groove 3, in the subsonic flow, if the cross-sectional area of the groove 3 decreases, the flow velocity of the air flow passing through increases. That is, the flow velocity in the middle and middle portions is higher than that of the air flow inlet and outlet of the groove 3. Therefore, negative pressure is generated in this portion, and the magnetic head slider 1 comes into contact with the disk 2.

At this time, since the air inlet side and the outlet side of the air flow are symmetrical, the entire bottom surface of the magnetic head slider 1 comes into contact with the disk 1, and stable contact is maintained. .

[0013]

As described above, according to the present invention, the magnetic head slider is made smaller and lighter, and the shape of the groove through which the air flow passes formed on the surface facing the disk is improved. There is no problem of friction between the head slider and the disk, and recording / reproduction is performed in a state where they are forcibly brought into contact with each other. Therefore, there is no risk of head crash, and recording / reproduction can be performed while maintaining stable contact with respect to changes in the peripheral speed of the rotating disk and changes in the skew angle.

[Brief description of drawings]

FIG. 1 is a perspective view showing a magnetic head slider according to an embodiment of the present invention.

[Explanation of symbols]

 1 magnetic head slider 2 disk 3 groove

Claims (1)

[Claims] 1. A magnetic head slider comprising a magnetic head and a groove through which an air flow generated by rotation of the disk passes on a surface facing the disk, wherein the groove is an inlet and an outlet of the air flow. Are formed so that their opening areas are substantially equal to each other and the central portion of the groove is narrowed, so that a negative pressure is generated between the magnetic head slider and the disk, so that the entire surface and the disk are rotated. A magnetic head slider, which is supported by a fixed magnetic recording device body so as to maintain a forced contact with the magnetic head slider.