JP2765357B2 - Magnetic head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head of a magnetic disk drive for recording / reproducing information while floating at a constant distance with respect to a recording surface of a magnetic disk by wind pressure caused by rotational movement of the magnetic disk. About.

[0002]

2. Description of the Related Art A conventional magnetic head of a magnetic disk device for recording / reproducing information while floating at a constant interval with respect to a recording surface of a magnetic disk by wind pressure due to a rotational movement of the magnetic disk is a magnetic disk. This method determines the flying height of the core by balancing the load of the gimbal spring, which supports the core with a slider surface that receives buoyancy due to the wind pressure caused by the rotational movement, and the buoyancy of the core. The magnetic head is in contact with the recording surface of the magnetic disk and is stationary.

[0003]

In the conventional magnetic head as described above, since the load of the gimbal spring supporting the core portion is constant, if the buoyancy changes due to a change in the speed of the rotational movement of the magnetic disk, the core will not move. There is a disadvantage that the flying height of the part also varies. There is also a disadvantage that the magnetic head and the magnetic disk come into contact with each other at the start and stop of the rotational movement of the magnetic disk, causing sliding wear on both. Further, there is another problem that if the rotational movement of the magnetic disk is stopped for a long time, the magnetic head is attracted to the magnetic disk and becomes difficult to fly.

[0004]

According to the present invention, there is provided a magnetic head comprising:
A core portion having a groove and having a slider surface which receives buoyancy of positive pressure and negative pressure by wind pressure due to the rotational motion of the magnetic disk, and the magnetic disk stops rotating by supporting the core portion at a tip end portion A gimbal spring for holding the core portion at a fixed interval with respect to the recording surface of the magnetic disk; and an arm for holding an end portion of the gimbal spring, the angle with respect to the recording surface of the magnetic disk can be changed. In this case, the suppression wing is provided on a side surface of the core.

[0005]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a front view showing an operation state of the embodiment of FIG.

In FIG. 1, the core portion 3 has a slider surface 5 that receives buoyancy of positive pressure and negative pressure by wind pressure due to the rotational movement of the magnetic disk 6 (see FIG. 2). The gimbal spring 2 supports the core portion 3 at the tip end, and when the magnetic disk 6 is rotating at a constant speed, holds the core portion 3 at a constant interval with respect to its recording surface. The arm 1 holds the end of the gimbal spring 2.
The suppression wings 4 provided on the side surface of the core portion 3 are mounted so that the angle with respect to the recording surface of the magnetic disk 6 can be changed.

Next, the operation of the magnetic head configured as described above will be described with reference to FIG.

When the rotation of the magnetic disk 6 is stopped, the core portion 3 is stopped at a position which is kept at a constant distance from the recording surface of the magnetic disk 6 by the spring pressure U1 of the gimbal spring 2. I have. When the magnetic disk 6 rotates, the negative pressure L1 applied to the suppression blade 4 due to wind pressure
, A negative pressure L2 due to a groove (not shown) provided in the slider surface 5, and a positive pressure (buoyancy) U2 due to the slider surface 5.

When the rotation of the magnetic disk 6 is started, the core portion 3 is pressed against the recording surface of the magnetic disk 6 by the negative pressure L2. The ratio of the force L3 obtained by combining the negative pressure L2 and the force U3 obtained by combining the buoyancy U2 and the spring pressure U1 becomes constant,
The core portion 3 floats while maintaining a constant interval with respect to the recording surface of the magnetic disk 6. The flying height at this time is the combined force L
3 and the resultant force U3, when the spring pressure U1 of the gimbal spring 2 is sufficiently smaller than the other force even if the rotational speed of the magnetic disk 6 fluctuates, the other force becomes magnetic. Since it changes in proportion to the rotation speed of the disk 6, the flying height of the core portion 3 is constant irrespective of the radial position of the magnetic disk 6.

The flying height of the core 3 can be set to an arbitrary value by changing the angle of the suppression blade 4 with respect to the recording surface of the magnetic disk 6.

[0012]

As described above, in the magnetic head according to the present invention, the rotation of the magnetic disk is stopped by providing the suppression wing on the side surface of the core portion capable of changing the angle with respect to the recording surface of the magnetic disk. When the magnetic disk is rotating, the core is stopped at a position where a fixed distance is maintained with respect to the recording surface of the magnetic disk.
This has the effect that the flying height of the core can be kept constant at an arbitrary value, thus preventing the occurrence of sliding wear due to the contact between the magnetic head and the magnetic disk and preventing the magnetic head from sticking to the magnetic disk. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a front view showing an operation state of the embodiment of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Arm 2 Gimbal spring 3 Core part 4 Suppression wing 5 Slider surface 6 Magnetic disk

Claims (2)

(57) [Claims] A core having a slider surface which receives buoyancy of positive pressure and negative pressure by wind pressure caused by a rotational motion of the magnetic disk; and the magnetic disk stops rotating by supporting the core at a tip end. A gimbal spring for holding the core portion at a fixed interval with respect to the recording surface of the magnetic disk, and a suppression wing capable of changing an angle with respect to the recording surface of the magnetic disk is provided on a side surface of the core portion. A magnetic head, characterized in that: A core portion having a groove and having a slider surface which receives buoyancy of positive pressure and negative pressure by wind pressure caused by a rotational motion of the magnetic disk; and a tip portion supporting the core portion to rotate the magnetic disk. A gimbal spring for holding the core portion at a fixed interval with respect to the recording surface of the magnetic disk when stopped, and an arm for holding a terminal portion of the gimbal spring, and an angle with respect to the recording surface of the magnetic disk. A magnetic head characterized in that a suppression wing capable of changing the size is provided on a side surface of the core portion.