JPH0944968A - Magnetic head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent instability in reproduced signal waveform caused by a gimbals support mechanism and the lowering in reproduced signal output when information is recorded/reproduced by a magnetic head. SOLUTION: A contact point between a gimbal member 5 and a pivot is arranged on a line Z-Z' passing through the center of a recording/reproducing gap 1 and in the direction perpendicular to the surface of a magnetic recording, and further, the intersected point between the rotary shaft of the inclination in the radial direction Y-Y' of the medium 8 and the rotary shaft of the inclination in the rotational direction X-X' of the medium 8 is arranged on the line Z-Z'. Thus, the reproduced signal output value is increased, and the reproduced signal waveform is stabilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head, and more particularly to a double-sided recording / reproducing magnetic head for recording / reproducing signals on / from both sides of a magnetic disk.

[0002]

2. Description of the Related Art As a known example of the prior art, Japanese Patent Laid-Open No. 4-353
Japanese Patent No. 669 is known.

This conventional magnetic head will be described with reference to the drawings.

FIG. 3 is a side view showing a conventional magnetic head, and FIG. 4 is a plan view showing the conventional magnetic head.

In this conventional magnetic head, a slider 9 including a front core portion 14 having a recording / reproducing gap 12 and an erasing gap 13 is attached to a gimbal 8 and supported by a pivot 11 from the back surface of the gimbal. As for the slider width L, the length of the slider 9 in the medium running direction CC ′ and the length of the front core portion 14 are also equal to L. At this time, the position of the pivot 11 is located at the center GC (gimbal center) of the gimbal 8 in the magnetic medium traveling direction, and this position is deviated from the center SC (slider center) of the slider 9 in the magnetic medium traveling direction. For example, in the 4 MB preceding erase type magnetic head, the slider 9 is moved so that the recording / reproducing magnetic gap of the head core portion is located at a position displaced by 0.35 mm from the gimbal center GC.
Attached to.

Separately from this, the slider center S is not supported by the cymbal center GC described above.
An example of supporting on C is also reported in the aforementioned publication.

Further, the center of the gimbal 8 in the radial direction of the magnetic medium is also deviated from the recording / reproducing gap 12 of the front core portion 14.

[0008]

In the above-described conventional magnetic head, the cymbal bridge position is not in the medium running direction of the recording / reproducing gap or in the head movement direction, so that the recording / reproducing gap is caused by the distortion of the medium. There is a problem in that the reproduction signal waveform becomes unstable because it becomes easy to get away from.

Further, in the conventional magnetic head, since there is no cymbal support point on the recording / reproducing gap, there is a problem that the recording / reproducing gap is easily separated from the medium due to the distortion of the medium and the reproduction signal output is reduced. there were.

[0010]

An object of the present invention is to stabilize the reproduction waveform by arranging the bridge position of the cymbal with respect to the recording / reproducing gap in the medium running direction and the magnetic head moving direction. Further, the output value is increased by disposing the cymbal support point on the recording / reproducing gap.

Therefore, the magnetic head of the present invention has a magnetic core having a gap for performing magnetic recording and reproduction, a slider assembly having the magnetic core incorporated in a non-magnetic slider, and a support for the slider assembly. Further, a gimbal member having a rotating shaft that tilts in the traveling direction of the medium and a rotating shaft that tilts in the radial direction of the medium, and a pivot that fixedly adheres the periphery of the gimbal member and is in contact with substantially the central portion of the gimbal member. In a magnetic head composed of an arm member provided with the arm member, a contact point between the gimbal member and the pivot is arranged on a line perpendicular to the surface of the medium passing through the center of the gap, and passing through the center of the gap. And the intersection of both axes of rotation is placed on the vertical line.

By the above means, since the magnetic head of the present invention supports the gimbal on the recording / reproducing gap, the contact between the recording / reproducing gap and the medium is improved, and the gimbal bridge records. Since the reproduction gap is in the medium traveling direction and in the magnetic head movement direction, the recording / reproduction gap follows the movements of the medium and the magnetic head.

[0013]

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 magnetic head of the present invention, and FIG. 2 is a side view showing an operating state of the magnetic head of the present embodiment.

In FIG. 1, the magnetic head of this embodiment is
A magnetic core 2 having a recording / reproducing gap 1 for magnetic recording and reproducing, a slider assembly 4 in which the magnetic core 2 having the recording / reproducing gap 1 is sandwiched from both sides by a non-magnetic slider 3, and this slider assembly. A bridge 6 serving as a gimbal rotation shaft that supports 4 and tilts in the traveling direction of the medium.
Is an arm member having a gimbal member 5 having a bridge 7 as a gimbal rotation shaft for tilting in the radial direction of the medium, and a pivot for fixedly adhering the periphery of the gimbal member 5 and abutting substantially the central portion of the gimbal member 5. Composed of and.

Point A is the contact point when the gimbal member 5 is pressed in the direction of arrow B by the pivot provided on the arm member. At this time, the medium traveling direction is X →
The X'direction, the direction in which the magnetic head seeks (the radial direction of the medium) is the Y-> Y 'direction, and the height direction is the Z->Z' direction. The bridge 6 serves as a rotary shaft for tilting the medium in the radial direction, and the bridge 7 serves as a rotary shaft for tilting the medium in the traveling direction.

Next, the operation of the embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

FIG. 2A is a side view from the Y direction showing the followability of the magnetic head 4 when the medium 8 is deformed. When the medium 8 is deformed, the magnetic head 4 rotates about the bridge 7. At this time, the sliding surface of the slider assembly 4 with respect to the medium 8 is kept parallel to the surface of the medium 8 by the rotating action of the bridge 7. At this time, the recording / reproducing gap 1 follows the medium 8 and the pressure B from the pivot is applied.
Also always supports the recording / reproducing gap 1 from the vertical direction. FIG. 2B shows the magnetic head 4 when the medium 8 is deformed.
6 is a side view from the X ′ direction showing the followability of FIG. When the medium 8 is deformed, the magnetic head 4 rotates about the bridge 6. At this time, the sliding surface of the slider assembly 4 with respect to the medium 8 is kept parallel to the surface of the medium 8 by the rotating action of the bridge 6. At this time, the recording / reproducing gap follows the medium 8, and the pressure B from the pivot always supports the recording / reproducing gap 1 from the vertical direction.

[0019]

As described above, in the magnetic head of the present invention, the bridge positions are arranged in the medium running direction of the recording / reproducing gap and in the seek direction of the magnetic head.
As compared with the conventional magnetic head in which the recording / reproducing gap is displaced with respect to the gimbal center, the following capability of the recording / reproducing gap with respect to the medium is improved, and the output waveform is stabilized.

Since the magnetic head of the present invention supports the gimbal on the recording / reproducing gap, the recording / reproducing gap and medium of the medium are different from those of the conventional magnetic head in which the supporting point of the gimbal is not on the recording / reproducing gap. The contact property is improved and the output value is increased.

[Brief description of drawings]

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

FIG. 2 is a side view showing an operating state of the magnetic head of the present embodiment.

FIG. 3 is a side view showing a conventional magnetic head.

FIG. 4 is a plan view showing a conventional magnetic head.

[Explanation of symbols]

 1 recording / reproducing gap 2 magnetic core 3 non-magnetic slider 4 slider assembly 5 gimbal 6 bridge (medium radial direction rotating shaft) 7 bridge (medium rotating direction rotating shaft) 8 medium 9 slider 10 gimbal 11 pivot 12 recording / reproducing gap 13 Erasing gap 14 Front core C-C 'Medium rotation direction DD' Medium radius direction XX 'Medium rotation direction rotation axis Y-Y' Medium radius rotation axis Z-Z 'Medium surface and perpendicular direction A pivot Gimbal contact point B Pivot pressing direction L Slider width FC Front core center GC Gimbal center SC Slider center

Claims (2)

[Claims] 1. A magnetic core having a gap for magnetic recording and reproduction, a slider assembly in which the magnetic core is incorporated in a non-magnetic slider, and a slider which supports the slider assembly and tilts in the traveling direction of the medium. A gimbal member having a rotating shaft for rotating the medium and a rotating shaft for tilting in the radial direction of the medium; and an arm member having a pivot for fixing and adhering the periphery of the gimbal member and abutting substantially the central portion of the gimbal member. In the constructed magnetic head, the contact point between the gimbal member and the pivot is arranged on a line passing through the center of the gap and perpendicular to the surface of the medium. 2. The magnetic head according to claim 1, wherein an intersection of the two rotation axes is arranged on a line perpendicular to the surface of the medium passing through the center of the gap.