JP3282256B2 - Supporting mechanism for floating magnetic head and magnetic head device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting mechanism suitable for supporting a flying magnetic head for recording and reproducing data on and from a magnetic disk, particularly a small flat magnetic head, and a supporting mechanism provided with the supporting mechanism. Magnetic head device.

[0002]

2. Description of the Related Art FIG. 5 is a side view schematically showing a general support mechanism of a floating magnetic head, and FIG. 6 is a bottom view of the same as viewed from the surface of a magnetic disk.

In these figures, reference numeral 50 denotes a suspension member having a base end 50a attached to a positioning device 51, and reference numeral 52 denotes a distal end 50b of the suspension member 50.
, 53 denotes a surface of the magnetic disk running in the direction of arrow 54 facing the magnetic head 55, and 56 denotes a lead wire bonded to a bump of the magnetic head 55.

The flexure member 52 has a tongue 52a at the center in the width direction. The free end of the tongue 52a extends in the direction opposite to the running direction of the magnetic disk.
The other end is cut out from the flexure member 52 so as to be continuous with the flexure member 52. Magnetic head 5
5 is attached to this tongue 52a.

[0005]

According to such a conventional support mechanism, as the size of the magnetic head becomes smaller, the influence of the wind pressure applied to the lead wire 26, its weight, the spring force, etc. on the flying characteristics is ignored. I can no longer do it. In particular,
In the case of a composite magnetic head in which an inductive head and a magnetoresistive (MR) head are combined, it is necessary to provide four bumps. Therefore, the size of each bump is reduced, wiring becomes complicated, and four lead wires are used. May have a more adverse effect on the flying characteristics.

Accordingly, the present invention solves the above-mentioned problems of the prior art, and provides a magnetic head support mechanism and a magnetic head device configured so that the flying of the magnetic head does not adversely affect the flying characteristics. Is what you do.

[0007]

According to the present invention, a suspension extends from a fixed end to a running direction of a magnetic disk and has a floating magnetic head fixed to the other end. A support mechanism comprising a member,
The suspension member is configured to be electrically connected directly to the floating magnetic head, and includes a metal leaf spring member also serving as a lead of the floating magnetic head, and a resin layer covering the metal leaf spring member. The metal leaf spring member and the resin layer are bent in substantially the opposite directions continuously from the first arm portion extending from the fixed one end portion of the suspension member toward the other end portion, and the first arm portion. A second arm part, and a tongue having a free end extending substantially in the direction of extension of the first arm part and having the other end cut out from the second arm part so as to be continuous with the second arm part. A floating magnetic head is fixed to the tongue, and the first arm has a hemispherical projection whose tip abuts the tongue. A magnetic head support mechanism is provided. .

According to the present invention, there is further provided a floating magnetic head, and a suspension member extending from a fixed one end in the running direction of the magnetic disk and having the floating magnetic head fixed to the other end. A magnetic head device having a supporting mechanism, wherein a suspension member is electrically connected directly to the floating magnetic head, and the metal leaf spring member also serves as a lead of the floating magnetic head; and a metal leaf spring member. A metal plate spring member and a resin layer extending from the fixed one end of the suspension member toward the other end, and continuous with the first arm portion. And a second arm portion bent substantially in the opposite direction, and a second arm portion having a free end extending substantially in the direction of extension of the first arm portion and the other end continuing to the second arm portion. of A floating magnetic head is fixed to the tongue, and a first arm is provided with a hemispherical projection whose tip contacts the tongue. Magnetic head device is provided.

[0009]

The metal leaf spring member of the suspension member is electrically connected directly to the magnetic head and also serves as its lead. A suspension member is formed by covering the metal leaf spring member with a resin layer. Therefore, a lead wire is not required, the adverse effect on the flying characteristics can be eliminated, the manufacturing cost can be reduced, and the size of the magnetic head can be easily reduced. In particular, according to the present invention, a second arm that is continuous from the end to the first arm extending along the running direction of the magnetic disk and is bent substantially in the opposite direction; Since the tongue cut out in the substantially opposite direction and the hemispherical projection whose tip touches the tongue are provided, the degree of freedom in setting the pitch angle in the direction in which the leading side of the supporting magnetic head is raised is extremely large. Become. Therefore, even when combined with a flat-type magnetic head, a sufficient output can be obtained without causing interference with projections on the surface of the magnetic disk, and flying and landing can be performed smoothly. Further, even if the surface condition of the magnetic disk is poor, 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 possibility that the disk surface is scraped or crashed. In addition, since the second arm portion is configured to be bent substantially in the opposite direction, the repulsive force against the rotational moment in the direction in which the leading side of the magnetic head is lowered can be set large, and the direction in the opposite direction can be set. The durability strength characteristics of the conversion part can be remarkably improved.

[0010]

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

FIG. 1 is a bottom view schematically showing a state after bending in a floating magnetic head supporting mechanism according to an embodiment of the present invention from the magnetic disk surface side, and FIG. 2 shows a state before the bending. It is a bottom view shown.

As shown in these figures, the suspension member 10 includes a first arm 11 and a second arm 12.
And a tongue portion 13.
4 and an insulating and anti-vibration resin layer 15 covering the same. The metal leaf spring member 14 is patterned so as to function as a spring member and also to serve as a lead of the magnetic head, and a tip end thereof is electrically connected to the magnetic head. In this embodiment, the metal leaf spring member 14 has a two-layer structure of Cu (copper) and SUS (stainless steel).

A hole 16 for attachment to a positioning mechanism (not shown) is provided at one end 11a of the first arm portion 11, and a hemispherical portion is provided at a portion overlapping the second arm portion 12. A projection 17 is provided. The first arm 11 extends from the end 11a in the running direction of the magnetic disk. The second arm portion 12 is bent substantially in the opposite direction to the first arm portion. The second arm portion 12 has a free end extending substantially in the direction in which the first arm portion 11 extends, and the second arm portion 12 has the other end connected to the second arm portion 12. There is provided a tongue 13 cut out from the tongue. This tongue 13
The floating magnetic head is directly fixed to the head.

FIG. 3 is a perspective view showing a state in which a small magnetic head is attached to the suspension member 10 in the present embodiment, and FIG. 4 is a side view thereof.

As shown in these figures, a small flat magnetic head 18 is fixed to a tongue 13 cut out from the second arm 12, and its bumps 18 a and 18 b are attached to the tongue 13. Are soldered directly to the distal ends 14a and 14b of the metal leaf spring member 14 which are extended and exposed. In FIG. 4, reference numeral 19 denotes the surface of the magnetic disk on which the air bearing surface of the magnetic head 18 faces, and reference numeral 20 denotes the running direction of the magnetic disk.

As described above, since the metal leaf spring member 14 also serves as a lead for the magnetic head 18, no lead wire is required. As a result, it is possible to remove the adverse effect on the flying characteristics, reduce the manufacturing cost, and easily reduce the size of the magnetic head.

Further, according to the present embodiment, the second arm portion 12 bent from the end portion 11a substantially in the opposite direction to the first arm portion 11 extending in the running direction of the magnetic disk, Since the second arm portion 12 and the tongue portion 13 cut out in a substantially opposite direction are provided, the degree of freedom in setting the pitch angle in the direction in which the leading side of the magnetic head to be supported rises becomes very large. In addition, since the second arm 12 is configured to be bent in a substantially opposite direction by bending, the repulsive force against the rotational moment 21 in the direction in which the leading side of the magnetic head 18 is lowered can be set. In addition, the durability strength characteristics of the direction change portion in the reverse direction can be significantly improved.

As a result, even in combination with a flat type magnetic head, a sufficient output can be obtained without causing interference with projections and the like on the surface of the magnetic disk, and flying and landing can be performed smoothly. Also, even if the surface condition of the magnetic disk is bad,
Ascent speed can be reduced. Furthermore, since the stick-slip phenomenon does not occur, the head is easily levitated, and there is no possibility that the disk surface is scraped or a crash occurs.

[0019]

As described above in detail, according to the present invention, the suspension extends from the fixed one end in the running direction of the magnetic disk and the magnetic head is fixed to the other end. A support mechanism comprising a member,
Since the suspension member is electrically connected directly to the magnetic head and is composed of a metal leaf spring member also serving as a lead of the magnetic head, and a resin layer covering the metal leaf spring member, no lead wire is required. . As a result, it is possible to remove the adverse effect on the flying characteristics, reduce the manufacturing cost, and easily reduce the size of the magnetic head. In particular, according to the present invention, a second arm that is continuous from the end to the first arm extending along the running direction of the magnetic disk and is bent substantially in the opposite direction; Since the tongue cut out in almost the opposite direction and the hemispherical projection whose tip touches the tongue are provided, the degree of freedom in setting the pitch angle in the direction in which the leading side of the supporting magnetic head is raised is extremely large. Become. Therefore, even when combined with a flat-type magnetic head, a sufficient output can be obtained without causing interference with projections on the surface of the magnetic disk, and flying and landing can be performed smoothly. Further, even if the surface condition of the magnetic disk is poor, the flying start speed can be reduced. Furthermore, since the stick-slip phenomenon does not occur, the flying of the head becomes easy,
There is no danger of the disk surface being scraped or crashing. In addition, since the second arm portion is configured to be bent substantially in the opposite direction, the repulsive force against the rotational moment in the direction in which the leading side of the magnetic head is lowered can be set large, and the direction in the opposite direction can be set. The durability strength characteristics of the conversion part can be remarkably improved.

[Brief description of the drawings]

FIG. 1 is a bottom view schematically showing a state after bending in a flying magnetic head supporting mechanism according to an embodiment of the present invention, from the magnetic disk surface side.

FIG. 2 is a bottom view showing a state before a bending process of the support mechanism of FIG. 1;

FIG. 3 is a perspective view showing a state in which a small magnetic head is attached to a suspension member in the embodiment of FIG. 1;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a side view schematically showing a general support mechanism of the flying magnetic head.

FIG. 6 is a bottom view of the flying magnetic head support mechanism of FIG. 5 as viewed from a magnetic disk surface side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Suspension member 11 1st arm part 12 2nd arm part 13 Tongue part 14 Metal plate spring member 15 Resin layer 16 Mounting hole 17 Hemispherical projection 18 Magnetic head 19 Surface of magnetic disk 20 Running direction of magnetic disk

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 21/21 G11B 5/60

Claims (2)

(57) [Claims] 1. A supporting mechanism comprising a suspension member extending from a fixed one end in a running direction of a magnetic disk and having a floating magnetic head fixed to the other end. A metal leaf spring member configured so that the suspension member is electrically connected directly to the floating magnetic head and also serving as a lead of the floating magnetic head; and a resin layer covering the metal leaf spring member. Wherein the metal leaf spring member and the resin layer are continuous with the first arm portion extending from the fixed one end of the suspension member in the direction of the other end. A second arm portion bent substantially in the opposite direction, and a free end extending substantially in the extension direction of the first arm portion, and the other end connected to the second arm portion. The second arc And a tongue cut out from the arm portion, wherein the floating magnetic head is fixed to the tongue portion, and the tip of the first arm portion contacts the tongue portion. A supporting mechanism for a floating magnetic head, comprising a hemispherical projection. 2. A floating magnetic head, and a support mechanism having a suspension member extending from a fixed end to the running direction of the magnetic disk and having the floating magnetic head fixed to the other end. A magnetic leaf device, wherein the suspension member is electrically connected directly to the floating magnetic head, and the metal plate spring member also serves as a lead of the floating magnetic head, and covers the metal leaf spring member. A first arm portion comprising a resin layer, wherein the metal leaf spring member and the resin layer extend from the fixed one end of the suspension member in the direction of the other end; and the first arm A second arm portion bent substantially in the opposite direction to the second arm portion, and a free end extending substantially in the extension direction of the first arm portion;
And a tongue cut out from the second arm so as to be continuous with the arm. The flying magnetic head is fixed to the tongue, and the first arm is attached to the tongue. A magnetic head device having a hemispherical projection whose tip contacts the tongue.