JPH076534A - Floating magnetic head device - Google Patents

Abstract

PURPOSE:To increase the latitude of setting a pitch angle for raising the leading side of a planar magnetic head by fixing the magnetic head to a 2nd tongue part cut out of a 1st tongue part, having a free end in the magnetic disk traveling direction. CONSTITUTION:This device is provided with the 1st tongue part 121 cut out of a plate member 120 fitted in the extending direction of an arm member continuously in the reverse direction and the 2nd tongue part 122 cut out of this 1st tongue part continuously in the reverse direction. Then, the magnetic head is fitted to the tongue part 122. By this method, the latitude of setting the pitch angle in the direction of raising the leading side of the magnetic head is increased. Then, since the tongue part 122 is constituted to face in the same direction as the rotating direction of the disk, repulsive force against the angular moment in the lowering direction of the leading side of the magnetic head can largely be set, so as to facilitate the movement. As a result, when the planar magnetic head to be floated up under the pseudo-contact state in fitted, there is no fear of interference with a surface projection, etc., of the magnetic disk, and its floating and landing can smoothly be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a levitation type magnetic head for recording and reproducing on a magnetic disk, and more particularly to a levitation type magnetic head device having a support mechanism for supporting a small planar type magnetic head.

[0002]

2. Description of the Related Art FIG. 7 is a side view schematically showing a levitation type magnetic head device having a supporting mechanism according to the prior art, and FIG. 8 is a bottom view of the levitation type magnetic head device seen from the magnetic disk surface side.

In these drawings, 70 is an elastic arm member having a base end 700 attached to a positioning device 71, 72 is a flexure member attached to a tip 701 of the elastic arm member 70, and 73 is a direction of an arrow 74. 3A and 3B respectively show the surfaces of the magnetic disk running in the direction facing the magnetic head. The flexure member 72 has a tongue portion 720 at the center in the width direction. This tongue 720
Has a free end extending in a direction opposite to the running direction of the magnetic disk, and the other end is cut out from the flexure member 72 so as to be continuous with the flexure member 72. The magnetic head 75 is attached to this tongue 720.

[0004]

With such a support mechanism of the prior art, the slider does not have a rail portion on the air bearing surface side and almost the entire surface is flat, and the slider floats in a pseudo contact state with the magnetic disk. Small magnetic head
However, the following problems occur.

In the conventional support mechanism, as described above, since the free end of the tongue portion 720 of the flexure member 72 extends in the direction substantially opposite to the running direction of the magnetic disk, the tongue portion 72 is provided.
The leading side of the magnetic head 75 attached to 0 (the front side in the traveling direction of the magnetic head relative to the magnetic disk) is greatly restricted by the pitch angle setting in the upward direction. Since there is no tapered surface for generating lift, sufficient levitation cannot be expected. Therefore, the surface 73 of the magnetic disk
When the flying height is small, especially when the surface condition of the magnetic disk is poor, there are inconveniences such that the flying and landing cannot be performed smoothly. As a result, there is also a problem that the flying start speed becomes high. Further, the floating posture is such that the leading side is lowered.

If an offset is provided to the support mechanism when the magnetic head slider is fixed to the support mechanism, the leading side is slightly raised, but this is not sufficient. If the reading side is lowered, the distance between the read / write conversion element and the surface 73 of the magnetic disk becomes large, resulting in the inconvenience that sufficient output cannot be obtained.
(Contact start stop) characteristics are also adversely affected.

When the surface 73 of the magnetic disk slides against the slider 75, a rotational moment 76 as shown in FIG. 7 is applied to the flexure member 72. According to the conventional flexure member 72, the repulsive force is small with respect to the force in this direction due to its structure, so that the stick-slip phenomenon easily occurs. As a result, it becomes difficult to fly the head to a steady state, the surface of the disk is scraped, and in the worst case, the magnetic head may crash.

Therefore, the present invention solves the above-mentioned problems of the prior art, and has a high degree of freedom in setting the pitch angle in the direction in which the leading side of the magnetic head to be supported rises, and the planar magnetic type which floats in a pseudo contact state. It is intended to provide a flying type magnetic head device provided with a supporting mechanism suitable for supporting a head.

[0009]

According to the present invention, an arm member having elasticity extending from the fixed base end portion in the traveling direction of the magnetic disk, and an elastic plate member fixed to the tip end portion of the arm member. Provided is a levitation type magnetic head device provided with a plane type magnetic head mounted on an elastic plate member and flying in a pseudo contact state with a magnetic disk. The elastic plate member has a strip member that extends from the end fixed to the arm member in the distal direction of the arm member, and a free end that is cut out from the strip member and that is opposite to the above-described extending direction of the strip member. A first tongue having and a first
And a second tongue which is cut out from the tongue of the strip member and has a free end in the above-mentioned extending direction of the strip member, and the planar magnetic head is fixed to the second tongue.

The entire second tongue preferably projects from the first tongue toward the planar magnetic head.

It is preferable that the width of the planar magnetic head is smaller than the width of the strip member, and more preferably smaller than the width of the first tongue portion.

[0012]

A first tongue portion cut out from a strip member extending in the running direction of the magnetic disk and extending so as to have a free end in the opposite direction is provided, and further cut out from the first tongue portion in the running direction of the magnetic disk. Since the elastic plate member is configured by providing the second tongue portion that extends so as to have the free end, and the planar magnetic head that floats in a pseudo contact state with the magnetic disk is fixed to the second tongue portion, The degree of freedom in setting the pitch angle in the direction in which the leading side of the magnetic head rises is greatly increased. Moreover, since the second tongue portion is configured to be oriented in the same direction as the running direction of the magnetic disk, it is possible to set a large repulsive force against the rotational moment in the direction in which the leading side of the magnetic head is lowered.

[0013]

The present invention will be described in detail with reference to the following examples.

FIG. 1 is a side view schematically showing an embodiment of a floating magnetic head device according to the present invention, and FIG. 2 is a bottom view of the same as seen from the magnetic disk surface side.

In these figures, 10 is an elastic arm member (suspension) to which the base end portion 100 is attached to the positioning device 11, 12 is a flexure member attached to the tip end portion 101 of the elastic arm member 10, and 13 is an arrow 14. Head 15 of magnetic disk running in the direction of
And the surfaces facing each other. The elastic arm member 10 extends from the base end portion 100 in the running direction 14 of the magnetic disk, and the flexure member 12 serves as the arm member 10.
Is attached to the arm member 10 substantially along the extending direction of the. The flexure member 12 is in a pseudo contact state with the magnetic disk (the flying height is 0.02 to 0.06 μm).
A small planar magnetic head 15 that is levitated by is fixed.

FIG. 3 is a plan view showing the flexure member, and FIG. 4 is a side view of FIG.

As shown in these figures, the flexure member 12 is composed of one strip-shaped plate member (for example, about 9 mm × about 2.1 mm) 120 having elasticity as a whole, and the flexure members 12 are arranged in opposite directions. The extending first and second tongue portions 121 and 122 are cut out from the plate member 120.

The plate member 120 has a positioning pin hole 123.
Has a first end portion 124 and a first end portion extending in the widthwise central portion on the other end side so that the end portion 124 direction (the direction opposite to the running direction of the magnetic disk) is a free end. A tongue portion 121 is provided by cutting the plate member 120 into a U-shape. The base portion of the first tongue portion 121 is continuous with the plate member 120.

The second tongue portion 12 extends at the central portion in the width direction of the first tongue portion 121 so that the direction opposite to the extending direction of the tongue portion 121 (the running direction of the magnetic disk) becomes the free end.
2 is provided by cutting the first tongue portion 121 into a U shape. The base of the second tongue 122 is the first tongue 12
1 in succession.

The width x length of the first tongue portion 121 is 1.4 mm.
It is about 2.75 mm, and the width x length of the second tongue portion 122 is about 0.7 mm x 2.0 mm. Second tongue 1
A hemispherical recess 126 is provided at the center of 22.
Aligned with this recess 126, for example, 1.0 mm ×
A small planar magnetic head 15 of about 1.0 mm square is fixed to the tongue 122. The recess 126 may be provided on the elastic arm member 10 side. As described above, the width of the first tongue portion 121 is set larger than the width of the flat magnetic head 15, and the width of the second tongue portion 122 is set smaller than the width of the flat magnetic head 15.

5 and 6 are sectional views taken along lines AA and BB of FIG. 3, respectively. As is clear from these figures, the base portion of the second tongue portion 122 is bent at the broken line portion 125 so as to project from the surface of the first tongue portion 121, whereby the second tongue portion 122 is formed. The whole projects from the first tongue portion 121 in the magnetic disk direction. Second
By projecting the entire tongue 122 of the
Attached to this second tongue 122, this tongue 122
The magnetic head 15 having a width larger than the width does not come into contact with the first tongue portion 121.

As described above, according to the present embodiment, the first tongue portion cut out in the opposite direction continuously from the plate member 120 attached to the arm member 10 along substantially the extending direction of the arm member 10. 121 and a second tongue portion 122 which is continuously cut out in the opposite direction from the first tongue portion 121 are provided, and the magnetic head 15 is attached to the second tongue portion 122. The degree of freedom in setting the pitch angle in the direction in which the leading side of the magnetic head 15 rises becomes very large. Further, since the second tongue portion 122 is configured to face in the same direction as the disk rotation direction, it is possible to set a large repulsive force against the rotational moment 16 in the direction in which the leading side of the magnetic head 15 is lowered. . That is, according to this embodiment, the rotation direction 16 shown in FIG.
The rotation direction 17 is easier to move than the rotation direction 17.

As a result, when a plane type magnetic head that floats in a pseudo contact state is attached, there is no fear of interference with projections or the like on the surface of the magnetic disk, and flying and landing can be performed smoothly. As a result, the flying start speed can be reduced. Furthermore, since the stick-slip phenomenon does not occur, the flying of the head is facilitated, and there is no fear that the disk surface will be scraped or crashed.

[0024]

As described above in detail, according to the present invention, the elastic arm member extending from the fixed base end portion in the traveling direction of the magnetic disk and the elastic member fixed to the tip end portion of the arm member. Provided is a flying magnetic head device including a plate member and a planar magnetic head mounted on an elastic plate member and flying in a pseudo contact state with a magnetic disk. The elastic plate member has a strip member that extends from the end fixed to the arm member in the distal direction of the arm member, and a free end that is cut out from the strip member and that is opposite to the above-described extending direction of the strip member. A first tongue portion having a first tongue portion and a second tongue portion cut out from the first tongue portion and having a free end in the above-described extending direction of the strip member. Since it is fixed to the tongue, the degree of freedom in setting the pitch angle in the direction in which the leading side of the magnetic head rises is large, and it is suitable for a planar magnetic head that floats in a pseudo contact state.

[Brief description of drawings]

FIG. 1 is a side view schematically showing an embodiment of a floating magnetic head device of the present invention.

FIG. 2 is a bottom view of the floating magnetic head device in the embodiment of FIG. 1 viewed from the magnetic disk surface side.

FIG. 3 is a plan view showing an example of a flexure member in the embodiment of FIG.

FIG. 4 is a side view of the flexure member of FIG.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a cross-sectional view taken along the line BB of FIG.

FIG. 7 is a side view schematically showing a levitation type magnetic head device provided with a support mechanism according to the prior art.

8 is a bottom view of the floating magnetic head device of FIG. 7 viewed from the magnetic disk surface side.

[Explanation of symbols]

 Reference Signs List 10 elastic arm member 11 positioning device 12 flexure member 13 surface of magnetic disk 14 traveling direction of magnetic disk 15 floating magnetic head 120 plate member 121 first tongue portion 122 second tongue portion 123 positioning pin hole

Claims (4)

[Claims] 1. An elastic arm member extending from a fixed base end portion in a traveling direction of a magnetic disk, an elastic plate member fixed to a distal end portion of the arm member, and an elastic plate member attached to the elastic plate member. A flying-type magnetic head device comprising a flat magnetic head that floats in a pseudo contact state with a cage magnetic disk, wherein the elastic plate member extends from its end fixed to the arm member toward the tip of the arm member. A strip member extending in the direction of, a first tongue portion cut out from the strip member and having a free end in a direction opposite to the extending direction of the strip member, and a first tongue portion cut out from the first tongue portion. A second magnetic tongue portion having a second tongue portion having a free end in the extending direction of the strip member, and the planar magnetic head fixed to the second magnetic tongue portion. . 2. The levitation type magnetic head device according to claim 1, wherein the entire second tongue portion protrudes from the first tongue portion in the planar magnetic head direction. 3. The flying magnetic head device according to claim 1, wherein the width of the flat magnetic head is smaller than the width of the strip member. 4. The flying magnetic head device according to claim 1, wherein the width of the planar magnetic head is smaller than the width of the first tongue portion.