JP2561716Y2 - 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 magnetic head device, in which a lead wire connected to an extraction electrode of a transducer is connected between a lead wire fixing portion provided at the tip of a head support device and an extraction electrode of a transducer. By separating the wires into individual wires and connecting them to the extraction electrode in the state of wires, the effect of the spring property of the lead wire on the slider is reduced, the flying posture is stabilized, and the loop diameter of the lead wire is reduced. Thus, it is possible to provide a magnetic head device suitable for configuring a magnetic disk device that is small, thin, and has a large storage capacity.

[0002]

2. Description of the Related Art Conventionally, a magnetic disk device which flies while maintaining a gap by a minute air bearing between the magnetic disk and a magnetic disk using dynamic pressure generated by running of the magnetic disk has been used. ing.

FIG. 10 is a diagram showing the configuration of a conventional magnetic disk device incorporating a magnetic head device, wherein 1 is a magnetic disk, 2 is a magnetic head device, and 3 is a positioning mechanism. The magnetic disk 1 is driven to rotate in the direction of arrow a by a rotation drive mechanism (not shown). The magnetic head device 2 is positioned by being driven by the positioning mechanism 3 on the magnetic disk 1 in the direction of the arrow b1 or b2.
Writing and reading to and from the magnetic disk 1 are performed on a predetermined track.

The magnetic head device 2 includes a head support device 4
, A magnetic head 5 and a lead wire 6. The head support device 4 supports the magnetic head 5 so as to allow the magnetic head 5 to perform a pitch motion and a roll motion. Such a head supporting device 4 is disclosed in, for example, Japanese Patent Publication No. 58-22827.
This is known from Japanese Patent Publication No.

FIG. 11 is a front view of a magnetic head device, and FIG.
Is a bottom view, and FIG. 13 is an enlarged side view as seen from the medium outflow direction a. In the head support device 4, a flexible member 42 also made of a thin metal plate is attached to a free end at one longitudinal end of a support member 41 made of a thin metal plate, and the magnetic head 5 is attached to the lower surface of the flexible member 42. The magnetic disk 1 (see FIG. 10) is given a load force to press the magnetic head 5. The flexible body 42 is provided along the longitudinal axis O of the support body 41.
Two outer flexible frames 421, 4 extending substantially parallel to 1
22, a horizontal frame 423 connecting the outer flexible frame portions 421 and 422 at ends separated from the support 41, and a horizontal frame 423.
A central tongue-shaped portion 4 extending substantially in parallel with the outer flexible frame portions 421 and 422 from a substantially central portion thereof and having a free end at the tip.
24, and one end opposite to the direction in which the horizontal frame 423 is located is attached to the vicinity of the free end of the support 41 by means such as welding. 411 and 412 are flanges provided along the longitudinal direction of the support 41.

On the upper surface of the central tongue 424 of the flexible body 42, for example, a hemispherical load projection 425 is provided. 424 to transmit the load force. The load projection 425 may be provided on the lower surface near the free end of the support 41. The magnetic head 5 is attached to the lower surface of the central tongue 424 by means such as bonding. The magnetic head 5 is attached to the head support device 4 such that the length direction coincides with the longitudinal direction of the head support device 4. The distal end of the head support device 4 is provided with a lead wire fixing portion 43 called first caulking, and lead wire fixing portions 44 and 45 called second and third caulking.

The magnetic head 5 has a transducer 52 on a side end surface 513 of the slider 51 in the medium outflow direction, and a surface 512 opposite to the medium facing surface 511 is bonded and fixed to the head support device 4. On the side end surface 513 of the slider 51 in the medium outflow direction a, take-out electrodes 53 and 54 that are electrically connected to the coil of the transducer 52 are provided.
One end of the lead wire 6 is bonded to each of the extraction electrodes 53 and 54. The extraction electrodes 53 and 54 are arranged close to one end of the slider 51.

The lead wire 6 includes a plurality of strands 61, 62, and is inserted into a tube 63 after being twisted around the strands 61, 62, and provided on the head support device 4. It is supported and fixed to the lead wire fixing portions 44 and 45, guided to the tip portion, and fixed by the lead wire fixing portion 43 provided at the tip portion. Tube insertion is up to the lead wire fixing portion 43 provided on the tip portion, lead-out electrode 5 from the lead-wire-fixed portion 43
3 and 54, the wire 6
While forming a loop with a twist (twist) applied to 1 and 62, it is guided in the direction of the extraction electrodes 53 and 54 and bonded on the extraction electrodes 53 and 54. Reference numeral 7 in FIG. 12 is a coating resin.

[0009]

As described above, in the conventional magnetic head device, one end of each of the wires 61 and 62 is connected and fixed to the extraction electrodes 53 and 54 and then guided in the same direction to form a loop. Because it was making, there were the following problems. (A) Between the lead wire fixing portion 43 serving as the first caulking and the extraction electrodes 53 and 54 , the lead wire 6
Because of the configuration in which the twists 1 and 62 are applied, the spring pressure increases and the floating posture becomes unstable. In particular, as the shape of the slider 51 becomes smaller, the slider 61 becomes more susceptible to the spring pressure due to the twist of the wires 61 and 62, and the flying posture becomes unstable. The miniaturization of the magnetic head is an extremely effective means for responding to the increase in the density of magnetic recording and the increase in the read / write speed, as disclosed in, for example, Japanese Patent Application Laid-Open No. Sho. The miniaturization is effective in reducing the flying height and spacing loss necessary for achieving high-density recording. In addition, in combination with the gimbal (head support device), the miniaturization increases the resonance frequency, and prevents crashes and This is because it is effective in improving durability, and furthermore, an appropriate balance between the dynamic pressure and the gimbal spring pressure is maintained, the floating posture is maintained well, and stable floating characteristics are obtained. Further, the reduction in mass due to miniaturization results in a faster access movement of the arm supporting the gimbal.

The instability of the floating posture due to the twist and spring properties of the wires 61 and 62 may reduce the above-mentioned advantage due to the miniaturization, and is a problem that must be solved in miniaturization. is there. (B) The loop diameter formed by the strands 61 and 62 becomes large, and the loop expands greatly outside the slider 51. For this reason,
The space occupied by the wires 61 and 62 has increased, which has been an obstacle in reducing the size and thickness of the magnetic disk drive. In addition to the reduction in size and thickness, it also becomes an obstacle when increasing the storage capacity by adding magnetic disks.

Accordingly, the object of the present invention is to solve the above-mentioned conventional problems, to reduce the influence of the spring property of the lead wire on the slider, and to stably maintain the flying posture even when the slider is downsized. Another object of the present invention is to provide a magnetic head device suitable for forming a small, thin, and large-capacity magnetic disk device by reducing the loop diameter of a lead wire.

[0012]

In order to solve the above-mentioned problems, a magnetic head device according to the present invention includes a magnetic head having a transducer mounted on a slider, and a pitch motion and a roll motion allowed to the magnetic head. At the tip
It includes a head support device to which a magnetic head is attached, and a lead wire . The slider has a thickness direction perpendicular to the air outflow direction.
A medium facing surface on one side of the medium facing surface, and is opposite to the medium facing surface.
The head support device is attached to the opposite surface.
The transducer is adapted to move the air out of the slider.
At one end in the direction, at least one pair of extraction electrodes
The pair of extraction electrodes have air in the slider.
On one end face of the outflow direction, spaced apart from each other
I have. The lead wire is a pair of strands made of a continuous wire.
And near the tip of the head support device.
And are separated into individual strands. One end of the wire is the end
Is located on the one end face in the air outflow direction of the slider.
And perpendicular to the air outflow direction and the thickness direction.
The pair of extraction electrodes from one side in the slider width direction.
And is fixedly connected. Strand
The other end has the end in the air outflow direction of the slider.
On one end surface, from the other side in the slider width direction
It is guided on the other of the pair of extraction electrodes, and
Is defined.

[0013]

[Action] A lead wire is a pair of strands made of a continuous wire.
Individual elements near the tip of the head support device.
Lines are separated. One end of the wire is a slider
On one side end face in the air outflow direction
From one side of a pair of extraction electrodes,
One, connection is fixed. The other end of the strand
Slider width on one end face in the air outflow direction
From the other side of the direction on the other of the pair of extraction electrodes,
In addition, the connection is fixed. This allows the slider
The spring properties of the lead wires are flat from both sides in the width direction.
You will join in a balanced state. For this reason, cantilever springs
Compared to the conventional structure of
The adverse effect of the
Also, the floating posture can be kept stable. Moreover, take out
Bonding lead wires to each of the electrodes
The ends of the strands on either side in the width direction.
To the extraction electrode so that they are opposite to each other.
Can be This facilitates the bonding operation.

The loop formed by the lead wire can be formed by individually bending each of the wires. For this reason, the loop diameter can be reduced.

The structure and type of the magnetic head are not limited as long as it is a floating magnetic head having a slider. For example, the present invention can be widely applied to a Winchester type magnetic head, a composite type magnetic head, a thin film magnetic head and the like. The head support device may have any structure as long as it supports the magnetic head so as to allow the pitch motion and the roll motion of the magnetic head.

[0016]

FIG. 1 is an enlarged front view showing a magnetic head mounting portion of a magnetic head device according to the present invention, FIG. 2 is a bottom view thereof, and FIG. 3 is an enlarged side view of the magnetic head viewed from a medium outflow direction a. FIG. In the drawings, the same reference numerals as those in FIGS. 10 to 13 indicate the same components.

The magnetic head 5 has a transducer 52 at one end in the longitudinal direction of the slider 51 selected in the medium outflow direction a so that the longitudinal direction coincides with the longitudinal direction of the head support device 4. , Is attached to the tip of the head support device 4. The mounting direction of the magnetic head 5 is as follows.
The direction may differ from the illustrated direction by 90 degrees.

The transducer 52 is provided with extraction electrodes 53, 5 arranged close to one end of the slider 51 in the width direction.
4 is included. The illustrated extraction electrodes 53 and 54 are provided side by side in the thickness direction of the slider 51 at intervals.

The lead wire 6 includes two strands 61 and 62, is supported by the head support device 4 in a state of being inserted into the tube 63, and is led to the tip where the magnetic head 5 is mounted. It is fixed to a lead wire fixing portion 43 provided in the portion. Then, between the lead wire fixing portion 43 and the extraction electrodes 53 and 54 of the transducer 52, the wires 61 and 62 are separated, and are individually connected to the extraction electrodes 53 and 54 in the state of the wires 61 and 62. I have. Behind the lead wire fixing portion 43 (computer side), as in the prior art,
The wires 61 and 62 are twisted and inserted into the tube 63.

As described above, the lead wire 6 is connected between the lead wire fixing portion 43 provided at the distal end of the head support device 4 and the extraction electrodes 53 and 54 of the transducer 52 by the individual wires 61 and 62. Are connected to the extraction electrodes 53 and 54 in the state of the wires 61 and 62,
Of the lead wire 6 is reduced. For this reason, even when the slider 1 is downsized, the flying posture can be stably maintained.

The loop by the lead wire 6 is composed of the wires 61 and 6
2 can be individually curved and formed. For this reason, the loop diameter can be reduced.

In the embodiment, one end of each of the element wires 61 and 62 is opposite to each other in the width direction perpendicular to the medium outflow direction a so that the extraction electrodes 53 and 62 are opposite to each other.
54. With such a connection structure,
The element wire 61 from both sides in the width direction of the slider 51,
62 are applied in a balanced state, and the wire 6 for the slider 51 is compared with the cantilever spring structure.
The adverse effects of the spring properties of the sliders 1 and 62 are reduced, and a stable flying posture can be ensured even when the slider 51 is reduced in size and thickness.

When bonding the wires 61, 62 to the extraction electrodes 53, 54, respectively, the wires 6
One end of each of the electrodes 1 and 62 can be bonded to the extraction electrodes 53 and 54 from both sides in the width direction so as to be opposite to each other. This facilitates the bonding operation. The loop formed by the wires 61 and 62 can be formed by individually bending the wires 61 and 62 as shown. For this reason, the loop diameter can be reduced.

4 to 9 show another embodiment of the magnetic head device according to the present invention. In any of these embodiments,
1 shows a magnetic head device suitable for increasing the density of magnetic recording and increasing the read / write speed.

In the embodiment shown in FIG. 4, the slider 51 has a medium facing surface 511 having a flat shape without a rail, and has a transducer 52 at an intermediate portion in the width direction. Each of the extraction electrodes 53 and 54 is arranged at one end of the slider 51 in the width direction at an interval in the thickness direction. The lead wire 6 is connected between the lead wire fixing portion 43 and the extraction electrodes 53 and 54 of the transducer 52 by the respective wires 61,
62 and the extraction electrodes 5 in the state of the strands 61 and 62
3 and 54 are individually connected. The wires 61 and 62 are connected and fixed to the extraction electrodes 53 and 54 so as to be opposite to each other from both sides in the width direction orthogonal to the medium outflow direction a.

The embodiment of FIG. 5 shows an example in which concave grooves 514 and 515 are provided at both ends in the width direction of the slider 51, and FIG. 6 shows an example in which the transducer 52 is arranged near one end in the width direction. I have. In the embodiment shown in FIG.
Are arranged at both ends in the width direction of the slider 51 with a space therebetween.

In each of the embodiments shown in FIGS. 5 to 7, the lead wire 6 is connected to the lead wire fixing portion 43 and the transducer 5.
2 between the extraction electrodes 53 and 54, each of the strands 61 and 62 is separated, and the extraction electrodes 53 and 54 in the state of the strands 61 and 62.
Connected individually. The wires 61 and 62 are connected and fixed to the extraction electrodes 53 and 54 so as to be opposite to each other from both sides in the width direction orthogonal to the medium outflow direction a.

FIG. 8 shows an example in which concave grooves 514 and 515 are provided at both ends in the width direction of the slider 51, and FIG. 9 shows an example in which the transducer 52 is arranged near one end in the width direction. In FIG. 9, the extraction electrodes 53 and 54 are
1 are shifted from each other in the width direction. The lead wire 6 is separated into individual wires 61 and 62 between the lead wire fixing portion 43 and the extraction electrodes 53 and 54 of the transducer 52, and is individually separated into the extraction electrodes 53 and 54 in the state of the wires 61 and 62. It is connected. The wires 61 and 62 are in the medium outflow direction a
Are connected and fixed to the extraction electrodes 53 and 54 so as to be opposite to each other from both sides in the width direction perpendicular to the electrodes.
In any of the embodiments, the same operation and effect as those of the embodiment of FIGS. 1 to 3 can be obtained.

[0029]

As described above, according to the present invention, the following effects can be obtained. (A) The lead wire is separated into individual wires between a lead wire fixing portion provided at the tip of the head support device and the extraction electrode of the transducer, and is connected to the extraction electrode in the state of the wires. Therefore, the adverse effect of the spring property of the lead wire on the slider is reduced, and the flying attitude can be stably maintained even in a small-sized magnetic head suitable for high-density magnetic recording and high read / write speed. (B) It is possible to provide a magnetic head device suitable for forming a small, thin, and large-capacity magnetic disk device by reducing the loop diameter of the lead wire.

[Brief description of the drawings]

FIG. 1 is a front view showing a magnetic head mounting portion of a magnetic head device according to the present invention.

FIG. 2 is a bottom view showing a magnetic head mounting portion of the magnetic head device according to the present invention.

FIG. 3 is an enlarged side view of the magnetic head according to the present invention as viewed from a medium outflow direction.

FIG. 4 shows another embodiment of the magnetic head device according to the present invention.
It is an enlarged side view .

FIG. 5 shows another embodiment of the magnetic head device according to the present invention.
It is an enlarged side view .

FIG. 6 shows another embodiment of the magnetic head device according to the present invention.
It is an enlarged side view .

FIG. 7 shows another embodiment of the magnetic head device according to the present invention.
It is an enlarged side view .

FIG. 8 shows another embodiment of the magnetic head device according to the present invention.
It is an enlarged side view .

FIG. 9 shows another embodiment of the magnetic head device according to the present invention.
It is an enlarged side view .

FIG. 10 is a diagram showing a configuration of a magnetic disk device incorporating a magnetic head device.

FIG. 11 is a front view of a conventional magnetic head device.

FIG. 12 is a bottom view of a conventional magnetic head device.

FIG. 13 is an enlarged side view of a conventional magnetic head device viewed from a medium outflow direction.

[Explanation of symbols]

 4 Head Support Device 5 Magnetic Head 51 Slider 52 Transducer 53, 54 Extraction Electrode 6 Lead Wire 61, 62 Element Wire

Claims (2)

(57) [Scope of request for utility model registration] 1. A magnetic head comprising: a magnetic head having a transducer mounted on a slider; a head support device having the magnetic head mounted on a distal end thereof so as to allow pitch movement and roll movement on the magnetic head; and a lead wire. A head device, wherein the slider has a thickness direction perpendicular to an air outflow direction.
A medium facing surface on the surface side, and a medium facing surface opposite to the medium facing surface.
The head support device is mounted on a surface of the slider, and the transducer is adapted to move the air outflow of the slider.
At one end in the direction, at least one pair of extraction electrodes
The pair of extraction electrodes have air in the slider.
On one end face of the outflow direction, spaced apart from each other
The lead wire includes a pair of strands made of a continuous wire.
Near the tip of the head support device.
Each of the wires is separated at one end from the air outlet direction of the slider.
On the one side end face, the air outflow direction and forward
One side in the slider width direction orthogonal to the thickness direction
Are guided on one of the pair of extraction electrodes and
It is continued fixed, the other of said strands, the ends, the air outflow side of the slider
On the one side end face in the other direction in the slider width direction.
From one side to the other of the pair of extraction electrodes,
And a magnetic head device fixedly connected . 2. The magnetic head device according to claim 1, wherein :
The head support device has a lead wire fixing portion at the tip end.
And the lead wire is connected to the lead wire fixing portion at the distal end.
The lead wire fixing part and the transformer are fixed.
Between the extraction electrode of the
The magnetic head device according to claim Rukoto.