JPH07254246A - Head slider support device and rotating disk storage device - Google Patents

Abstract

(57) [Abstract] [Purpose] To make the suspension spring of the head slider support device thin to eliminate variations in the rigidity of the gimbal spring and the suspension spring. A gimbal spring 12 and an access mechanism coupling portion 18 each having a mounting portion for mounting a slider 13 having a recording / reproducing head, a gimbal flexible portion, a flexible spring portion 15, and a rigid body portion 14. A head-slider support device comprising a suspension spring 11 formed of, and a rib 16 made of, for example, a plated film, disposed on at least a part of the plate material of the suspension spring in order to impart rigidity to the rigid body portion 14 itself.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head slider supporting device for supporting a head for magnetically or optically recording and reproducing information on the surface of a storage medium such as a magnetic disk device or a magneto-optical recording device. The present invention relates to a rotating disk storage device equipped with a head slider support device.

[0002]

2. Description of the Related Art A conventional technique will be described by taking a magnetic disk device as an example. A head slider support device in a conventional magnetic disk device is, for example, as described in Japanese Patent Publication No. 58-22827, a suspension spring made of a member (hereinafter abbreviated as a flange) formed by bending a thin metal plate at a substantially right angle. Had been formed. FIG. 21 is a perspective view of a conventional head slider supporting device, and FIG. 22 is a top view thereof. A slider 3 is attached to the tip of the suspension spring 1 via a gimbal spring 2. The gimbal spring 2 has a mounting portion for mounting the slider 3 and the slider 3
The suspension spring 1 is spot-welded to the suspension spring 1. The suspension spring 1 is composed of a rigid body portion 4, a spring portion 5 and a coupling portion 7 that is coupled to the access mechanism. Due to the deformation of the normal spring portion 5, a load is applied to the slider 3 via a dimple portion (not shown) provided in a portion of the suspension spring 1 or the gimbal spring 2 facing the slider 3. The vertical rigidity of the spring portion 5 is suppressed to be small, and the load fluctuation is suppressed to a small amount due to surface waviness due to undulations and vibration of the rotating disk. The thickness of the suspension spring 1 is several tens of μ
Since it is as thin as about m, the flanges 6 are formed by bending the plates on both sides in the longitudinal direction at substantially right angles in order to secure the rigidity of the rigid body 4 in the out-of-plane direction.

Another conventional head slider supporting device is one in which a gimbal spring and a suspension spring are integrally structured to eliminate the dimple portion, and the gimbal portion is made flexible by half etching.

Still another conventional head slider supporting device is disclosed in Japanese Patent Laid-Open No. 59-213066, in which a rigid body portion of a suspension spring is formed by superposing and joining a plurality of plate materials. is there.

[0005]

SUMMARY OF THE INVENTION A conventional head slider supporting device, in which the suspension spring and the gimbal spring are formed as separate members and a load is applied to the slider via the dimple, is a slider with sliding friction at the dimple portion. Since the relative movement between the suspension spring and the suspension spring is possible, an external force acts on the slider during an access operation to a predetermined radial position of the magnetic disk device, a runaway, a CS / S (contact start stop) operation, etc. There is a problem that slippage may occur and the position of the slider with respect to the suspension spring may change, causing track deviation.

The rigid portion of the suspension spring is made by forming a flange by bending both ends of a thin metal plate in the longitudinal direction at substantially right angles. However, in this method, a functionally sufficient out-of-plane direction is formed. The flange height of several hundreds of μm or more was required to obtain the rigidity of the above. However, as the magnetic disk device is mounted at a higher density, the disc space is gradually reduced, and the suspension spring mounted between the discs is also required to be thin. However, the conventional technique in which the rigid portion is configured by the bent flange has a problem that it is difficult to realize a thin structure.

The suspension spring has a function of giving a load for balancing with the lift of the slider. Since this load affects the flying height of the slider, it is required that the variation of the load be as small as possible. . Specifically, it is necessary to reduce the vertical spring rigidity of the suspension spring. However, since the conventional suspension spring forms the rigid body part by the flange part,
If the suspension spring plate is thinned to reduce the vertical spring stiffness of the spring part, the rigidity of the rigid part is reduced.Therefore, there is a trade-off between the two, ensuring the rigidity of the suspension spring and ensuring the spring part's vertical direction. There is a problem that it is difficult to reduce the rigidity. Further, conventionally, there has been a problem that the stress is likely to be concentrated on the flange end portion 8 shown in FIG. 22 due to the displacement given to the suspension spring at the time of mounting, and the plastic deformation caused at this portion causes the load variation.

When the vibration characteristics of the suspension spring are examined, the out-of-plane rigidity of the suspension spring is increased by the flange, but the torsional rigidity and the in-plane rigidity are not increased, and conversely, the torsional vibration mode and the in-plane vibration mode are There is a problem that the natural frequency is reduced due to the mass of the flange. The decrease in the natural frequency leads to an increase in head vibration and a decrease in the servo band in the positioning operation, which is a cause of deteriorating the stability and speed of the operation of reading and writing information by the head.

Further, as the areal density of the magnetic disk device becomes higher, the flying height of the slider tends to be narrowed, and the slider is being miniaturized in order to follow the disc satisfactorily. It was also necessary to reduce the mass of the suspension. However, with the conventional suspension, it is difficult to bend the flange part with high accuracy to reduce the size,
There is a problem that performance deterioration and increase in processing cost occur.

Further, the head slider supporting device in which the suspension spring and the gimbal spring are integrally formed without the above-mentioned conventional dimple portion solves the problem of the track deviation due to the slip at the dimple portion. But,
In this conventional head slider support device, since the gimbal spring is manufactured by thinning the plate thickness of a part of the suspension spring by half etching, the plate thickness of the gimbal spring depends on half etching, which is difficult to ensure accuracy, and However, there is a problem in that the gimbal rigidity varies, and as a result, the flying height varies. Specifically, under the present circumstances, the precision of the half-etching is ± 5 μm or more, while the precision of the plate thickness of the rolled material of non-magnetic stainless steel is about ± 1 μm. Since the rolled material is at least half-etched, there is a problem that the precision of the disk is always worse than that of the rolled material.

Further, in the head slider supporting device in which the rigid body portion of the suspension spring is constructed by superposing and joining a plurality of the above-mentioned conventional plate members, since the plurality of plate members are joined by spot welding, the welding position varies. However, there is a problem that variations occur in the flying height of the slider.

An object of the present invention is to provide a head slider support device in which the suspension spring is made thin to eliminate variations in the rigidity of the gimbal spring and the suspension spring. Another object of the present invention is to provide a rotating disk storage device in which the distance between the storage disks is reduced.

[0013]

In order to achieve the above-mentioned object, a head slider supporting device of the present invention is a gimbal spring and an access mechanism comprising a mounting portion for mounting a slider having a recording / reproducing head and a flexible portion. The suspension spring is composed of a coupling portion that is coupled to, a flexible spring portion, and a rigid body portion, and the suspension spring supports the gimbal spring at an end portion on the side opposite to the coupling portion side, In addition, the rigid body portion is provided with a deposit film on at least a part of the plate material of the suspension spring in order to impart rigidity to itself. The gimbal spring is preferably made of the same plate material as the plate material of the suspension spring.

In order to achieve the above object, in the head slider supporting device of the present invention, the gimbal spring and the suspension spring are formed from the same plate material having flexibility and constant thickness. A mounting portion for mounting a slider having a recording / reproducing head and a flexible portion,
The suspension spring is (1) arranged at an end opposite to the gimbal spring and connected to the access mechanism;
(2) In order to impart rigidity to the plate member, the plate member is constituted by a rigid portion including a region in which a deposit film is arranged, and (3) a spring portion.

Furthermore, in order to achieve the above object,
In the head slider support device of the present invention, the gimbal spring and the suspension spring are formed of the same plate material having flexibility and a constant thickness, and the suspension spring is provided with a deposit film in order to give rigidity to the plate material. A rigid portion including a region, a coupling portion that is coupled to the access mechanism, and a spring portion.The gimbal spring includes a mounting portion for mounting a slider having a recording / reproducing head and a flexible portion. In addition, at least three sides of the rigid body portion are arranged so as to be surrounded by the rigid body portion in a region opposite to the side where the rigid body portion is connected to the spring portion.

Further, in order to achieve the above-mentioned other objects,
The rotating disk storage device of the present invention includes a plurality of disk-shaped storage media, a plurality of recording / reproducing heads, sliders for respectively supporting the recording / reproducing heads, a head slider supporting device for respectively supporting the sliders, and a head slider. An access means for supporting the supporting device and for moving the head slider supporting device onto the storage medium, and the distance between the disk-shaped storage media is 0.2 mm to 1,5 mm;
It is preferably in the range of 0.6 mm to 1,5 mm.

[0017]

[Function] The rigid portion of the suspension spring should be made of a material (for example, stainless rolled material) that secures the required rigidity in the out-of-plane direction by the deposit film provided by the deposit and that has a high plate thickness accuracy. Therefore, low gimbal rigidity can be stably realized while suppressing variations in rigidity. At the same time, the rigidity of the suspension spring in the vertical direction can be reduced. Further, if the suspension spring and the gimbal spring are integrally formed, the dimple portion of the conventional head slider supporting device can be eliminated, and as a result, it is possible to prevent the track deviation.

Further, the suspension spring can be made thinner. Further, since the ribs provided on the rigid body portion of the suspension spring serve to increase the torsional rigidity and the in-plane rigidity of the suspension spring, the torsional vibration and the in-plane vibration of the head support device can be increased to a high eigenvalue.

Further, when the ribs are provided in the lateral direction of the suspension spring in the boundary portion between the spring portion and the rigid body portion of the suspension spring, it is difficult to concentrate the stress generated at the boundary between the suspension spring and the slider during floating. Also, instead of providing ribs in the lateral direction, by providing a part with a thickness between the spring part and the rigid part at the boundary part, the rigidity of the suspension spring changes continuously, avoiding plastic deformation caused by stress concentration. it can.

Further, in the head slider supporting device composed of the deposit film, the bending process of the flange portion can be eliminated, the pressing die can be eliminated, and the processing cost can be reduced.

[0021]

Embodiments of the present invention will now be described in detail with reference to the drawings. <Embodiment 1> A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a first embodiment of the head slider support device. Suspension spring 1
1, the gimbal spring 12 is arranged at the tip of the rigid body portion 14, and the slider 13 is attached to the gimbal spring 12. On the other hand, the root side of the suspension spring 11 is an access mechanism coupling portion 1 that is coupled to an access mechanism (not shown).
8 is a structure that configures 8. The rigid body portion 14, the spring portion 15 and the gimbal spring 12 of the suspension spring 11 are composed of a thin plate 10 made of the same material such as rolled material. The rigid body portion 14 has ribs 16 constituting the rigid body portion on both sides in the longitudinal direction of the suspension spring. It is provided. A wiring sheet 17 for the signal line of the magnetic head is provided inside the rib 16 that constitutes the rigid body.

FIG. 2 is an enlarged view of the vicinity of the gimbal spring.
The cymbal spring 12 includes a slider joint portion 19 and a gimbal flexible portion 20. The slider 13 on which the recording / reproducing head 21 is mounted is attached to the gimbal spring 12 at the slider joint portion 19, and is flexibly supported out-of-plane and rigidly supported in-plane by the gimbal flexible portion 20. A lead wire (not shown) from the wiring sheet 17 passes over the gimbal flexible portion 20 and is divided into two hands to reach the slider joint portion 19 and reach the lead wire terminal portion 27, It is connected to a terminal portion (not shown) on the 13 side. FIG. 3 shows the rigid body portion 14 of FIG.
It is sectional drawing which shows the AA cross section. The ribs 16 that form the rigid body portion of the rigid body portion 14 are formed by depositing a deposit film on one surface of the thin plate 10 such as a rolled material.

According to this configuration, the plate thickness of the rigid body portion 14 including the ribs 17 can be made larger than the plate thicknesses of the spring portion 15 and the gimbal spring 12, and the rigidity of the rigid body portion 14 can be secured at the same time. , The gimbal spring 12 is a thin plate such as a rolled material having a high thickness accuracy (for example, SUS having a thickness of 25 μm).
Since the thickness accuracy of the non-magnetic rolled thin plate 304 is ± 1 μm or less), the out-of-plane pitch rigidity and roll rigidity of the gimbal spring 12 can be reduced, and the variation can be suppressed. As a result, compared to the conventional half etching method, it is possible to greatly reduce the variation in the flying posture of the slider 13 and improve the followability to the medium surface. Also, the gimbal spring 12 and the suspension spring 1
Since 1 is configured as an integral structure, recording has been caused by the fluctuation of the flying posture of the slider at the dimples and the slippage of the dimples that occurs during the access operation, which has been a problem since two bodies have dimples. Track deviation of the reproducing head can also be prevented.

Further, the suspension spring 11 of the present embodiment.
The plate thickness of can be made thinner than that when a conventional flange is used. FIG. 5 is a diagram showing the relationship between the height of the suspension spring 11 when a conventional flange is provided and the height of the rib required to realize the out-of-plane rigidity equivalent to the same, by the attachment and formation. The value calculated assuming that the rib has the same mechanical characteristics as the thin plate 10 such as a rolled material is shown. If the plate thickness of the flange is 0.076 mm and the height is 0.7 mm, the height may be about 0.2 mm when the width of the rib is 1 to 2 mm, and the height is about 3 in the case of the flange.
It can be seen that it can be reduced to 0%. Further, in this method, since the in-plane rigidity can be increased by increasing the width of the rib 16, it is possible to realize a high natural vibration of the in-plane mode of the head slider support device. In this embodiment, in order to avoid an increase in the thickness of the suspension spring 11 due to wiring, the lead wire of the recording / reproducing head is wired by the wiring sheet 17 such as a print sheet. Also,
In the head slider support device composed of the deposit film, the bending process of the flange portion can be eliminated, the pressing die can be eliminated, and the processing cost can be reduced.

The ribs 16 constituting the rigid body portion have the same mechanical properties as the thin plate 10 made of rolled material, and the thin plate 10 made of rolled material.
It is a deposit film that strongly bonds with, can be formed by physical and chemical methods such as plating, sputtering, and heat vapor deposition, and is preferably a non-magnetic material. Specifically, a plated film of NiP or the like is effective as a non-magnetic film that can be formed on a rolled material of stainless steel (SUS304 or the like), and a high-performance film can be realized by using electroless NiP plating. The film formed by the electroless NiP plating has the same mechanical properties as the stainless material, and the strength can be secured by heat treatment.

The method of forming the rib shape is the gimbal spring 1
By uniformly plating the whole thin plate 10 such as a rolled material on which a pattern such as 2 is manufactured, then applying an ultraviolet-sensitive resist, exposing and developing into a rib shape, and etching unnecessary portions of the plating with nitric acid or the like. realizable. When the rib is a thin film having a thickness of several μm, it can be realized by forming a rib pattern mask and then plating.

By using such a deposit film formed by plating or the like, a flange or the like, which makes it difficult to bend the head slider supporting device corresponding to the miniaturization and large capacity of the magnetic disk device, is eliminated, and the rigid portion is eliminated. The ribs 16 constituting the above can be formed accurately and easily, and a small head slider supporting device can be realized.

Next, a magnetic disk device provided with this head slider support device will be described. FIG. 19 is a partially fragmented perspective view showing an embodiment of the magnetic disk device.
In FIG. 19, a storage medium 41 is stacked on a spindle shaft (not shown) and is rotationally driven by a motor connected to this shaft. A recording / reproducing head (magnetic converter) 21 for reading data recorded in the storage medium 41 or writing data in the storage medium 41 is mounted on the slider 13. The slider 13 is a head slider support device 42.
The head slider support device 42 is connected to a positioning mechanism 44. Positioning mechanism 44
Takes a structure that moves around the rotation axis in this example,
The slider 13 is moved in the radial direction of the storage medium 41 and positioned by a drive unit 45 such as a voice coil motor provided on the opposite side of the head slider support device 42. This format is called the rotary access method.
The recording medium 41, the slider 13, the head slider support device 42, the positioning mechanism 44, the drive unit 45, and the like described above are housed in a cover 46 kept clean.

According to this structure, the rigid portion of the suspension spring of the head slider supporting device is made of a deposit film such as a plating on a thin plate of the gimbal spring so that it can be thinned and the disc space can be reduced. It is possible to put many discs into the home factor of the device. Alternatively, the height of the device can be reduced in the device having the same number of disks. For example, a slider with a thickness of 0.4 mm is used, and as shown in FIG. 5, the rib height is 0.2 m to obtain the same rigidity as that of the conventional flange.
Even if the device built-in gap is 0.2 mm, the disc spacing t = (0.4 + 0.2) × 2 + 0.2 =
It can be about 1.4 mm.

FIG. 23 is a diagram showing the relationship between the slider thickness and the disc spacing when sliders of various thicknesses are used. In the figure, the straight line a shows the case of the head slider supporting device of the above type, and the straight line b shows the case of the head slider supporting device of the second embodiment described later. When the slider thickness is reduced, the mass of the slider is reduced, and the rigidity of the entire head slider support device is increased, so that the rib can be reduced. In this way, the disc spacing can be 1.5 mm or less. The lower limit of the value is up to about 0.2 mm. Practically 1.5 mm
To 0.6 mm is preferable.

Further, according to this structure, since the natural frequency of the suspension is high and the off-track vibration is small, the access speed can be increased, the settling time can be shortened, and the access time can be shortened.

<Second Embodiment> FIG. 4 shows a second embodiment of the present invention in which the head slider support device is made thinner. Figure 2
3 is a cross-sectional view of a portion corresponding to the BB cross section of FIG. Ribs 16 that form a rigid portion are formed on the side of the thin plate 10 such as a rolled material to which the slider is attached. According to this embodiment, the thickness of the rib 16 can be made equal to or less than the thickness of the slider 13. In the conventional method of providing the flange, if the flange is directed to the side where the slider is attached, there is a possibility of contact with the medium, but in the present embodiment, such a situation does not occur, and a thinner device can be realized.

Further, if the slider is also formed by deposit, the slider is not adhered, and the slider and the rib can be formed by the same processing process from one direction, so that the head position accuracy can be improved and the processing man-hour and the cost can be reduced. This head slider support device can be formed as follows. Deposit an insulator such as alumina on the slider joint of the substrate, and then deposit a lower magnetic film such as permalloy and pattern it by ion milling etc. into a predetermined shape to form a conductor coil through the insulating film. An upper magnetic film forming a magnetic core is formed through the film. Further, the upper and lower magnetic films are grown in the thickness direction with a predetermined space therebetween to form a magnetic gap on the surface parallel to the medium. Further, an insulating film is deposited, and a thin film of silicon carbide, carbon, or the like that secures sliding resistance is deposited on the insulating film to form a slider.

<Third Embodiment> FIG. 6 is a perspective view showing the vicinity of a gimbal spring showing a third embodiment of the head slider supporting apparatus of the present invention. This is an example in which the ribs 16 that form the rigid body portions on both sides in the longitudinal direction of the suspension spring are extended to above the gimbal spring 12 and are joined together at the tip thereof. This has the effects of further improving the rigidity of the rigid body portion 14 and preventing the torsional deformation of the suspension spring that occurs when the ribs are separated on both sides, thus improving the torsional vibration characteristics. Since the drawing becomes complicated, the tip of the wiring sheet 17 is omitted and only one portion is shown.

<Fourth Embodiment> FIG. 7 is a perspective view showing the vicinity of a gimbal spring showing a fourth embodiment of the head slider supporting apparatus of the present invention. This is an example in which the ribs 16 that form the rigid body portion 14 of the suspension spring are provided on both upper and lower surfaces of the thin plate 10 such as a rolled material. A sectional view taken along the line AA of FIG. 7 is shown in FIG. This configuration has the effects of thinning the suspension spring and improving the rigidity in the plane and in the twisting direction. Further, when the rib 16 is provided on one surface, deformation due to the bimetal effect may occur due to temperature change, but the head slider support device of the present embodiment has an effect of reducing this deformation.

The head slider support device of this embodiment is an example in which the gimbal spring 12 shown in FIG. 2 is rotated 90 degrees in the plane. According to this structure, the arm connecting the gimbal flexible portion 20 and the suspension spring is in the lateral direction, it is not necessary to provide the rib 16 to the tip of the gimbal spring 12, and the mass of the head slider support device is reduced.
It has the effect of increasing the natural frequency and enabling high-speed access. Other than that, the same effect as described in Example 1 is obtained.

FIG. 9 is a sectional view showing a BB section in FIG. The ribs 16 are provided on both sides of the thin plate 10 such as a rolled material, and the slider joints 19 of the gimbal spring 12 are provided with joint spacers 26. The joint spacer 26 is a rib 16
At the same time, the rib 16 is formed by using a deposit film.
It can be formed at the same time. When the slider 13 and the gimbal flexible portion 20 are in a positional relationship where the slider 13 and the gimbal flexible portion 20 are overlapped with each other, the joint spacer 26 has an effect of ensuring the freedom of rotational movement of the slider 13 out of the plane. The joint spacer 26 may be made of another material.

<Embodiment 5> FIG. 10 shows a fifth embodiment of the head slider supporting apparatus of the present invention, and is a sectional view of a position corresponding to the section AA of FIG. Connect the ribs 16 constituting the rigid portion provided on the upper and lower surfaces of the thin plate 10 such as a rolled material,
This is an integrated example. In addition to the effect described in the fourth embodiment, there is an effect that the coupling of the rib 16 is strengthened and the mask at the time of processing is simplified.

<Embodiment 6> FIG. 11 is a perspective view showing a sixth embodiment of the head slider supporting apparatus of the present invention, and FIG. 12 is a lateral side view thereof. The reinforcing layer 22 forming the rigid body part is left at both ends of the suspension spring 11, and the spring part 15 is left,
This is an example provided in the central portion of the rigid body portion 14. The wiring sheet is omitted. The reinforcing film 22 was manufactured in the same manner as in Example 1 by changing the pattern of the UV photosensitive resist. In addition to the effect described in the first embodiment, the reinforcing film 22 can be easily formed and the head slider supporting device can be downsized.

<Embodiment 7> FIG. 13 is a perspective view showing a seventh embodiment of the head slider supporting apparatus of the present invention.
4 is a cross-sectional view showing the CC cross section. As an example of a method of forming the rigid body portion 14, an example in which the upper and lower surfaces and side surfaces of the suspension spring 11 other than the spring portion 15 and the gimbal spring 12 are integrally covered with a deposit film as the reinforcing layer 23 constituting the rigid body portion. The film formation can be greatly simplified, downsized, and at low cost. In addition to the effect described in the first embodiment, since the film is formed on both upper and lower surfaces, deformation due to temperature change is also reduced.

<Embodiment 8> FIG. 15 is a perspective view showing an eighth embodiment of the head slider supporting apparatus of the present invention.
6 is a cross-sectional view showing the DD cross section. This is an example in which the suspension spring 11 and the gimbal spring 12 are composed of separate members and are welded together. Although the characteristic of the track deviation is deteriorated by the configuration of the separate member, the suspension is thinned and the gimbal spring 12 can be realized in a small size.

<Embodiment 9> FIG. 17 is a plan view showing a portion of a rigid portion of a suspension spring of a ninth embodiment of a head slider supporting apparatus of the present invention. The suspension spring includes the rigid body portion 14 and the spring portion 15 as in the first embodiment.
And the gimbal spring 12 is a thin plate 10 such as a rolled material having the same member.
The rigid portion 14 has a rib 1 that constitutes a rigid portion.
A cross beam 24 is provided in a ladder shape in the lateral direction of 6 and the suspension spring. With this configuration, the rigidity in the out-of-plane (especially twist) direction and the in-plane direction can be improved. In addition, the cross girder contacting the spring portion 15 avoids stress concentration, which is caused by a method having a conventional flange and causes a load variation when a load is applied to the slider 13, eliminates plastic deformation, and reduces load. Can be reduced.

<Embodiment 10> FIG. 18 is a sectional view showing a section of a rigid portion of a suspension spring of a tenth embodiment of a head slider supporting apparatus of the present invention. In the thin plate 10 of Example 9 shown in FIG. 17, the portion surrounded by the ladder-shaped ribs is a hollow portion 25. The mask during film formation can be simplified and the weight can be reduced.

<Embodiment 11> FIG. 20 is a diagram showing a linear type magnetic disk device equipped with a head slider supporting device of the present invention. The guide arm 43 is coupled to the positioning mechanism 44, the head slider support device 42 is connected to the guide arm 44, and the slider 13 having the recording / reproducing head 21 mounted thereon is attached to the tip end of the head slider support device 42. The slider 13 advances and retreats in the radial direction of the storage medium 41 that is driven by the voice coil motor drive unit 45 and rotates. Also in this embodiment, the same effect as the rotary access method shown in FIG. 19 can be obtained.

The present invention is not limited to the above embodiment. For example, the shape and size of the gimbal spring 12 may be determined according to the specifications without departing from the concept of the present invention.

[0046]

As described above, according to the present invention, the spring portion of the gimbal spring or the suspension spring is formed of a plate material having a high thickness accuracy, and the rigidity of the gimbal spring in the pitch and roll directions and the vertical movement of the spring portion. The directional rigidity could be lowered, and their variations could be reduced to realize excellent vibration characteristics. Furthermore, the bending process can be eliminated and the suspension spring can be made thinner. In addition, the disk space of the rotating disk storage device can be reduced, the packaging density can be improved, and a large capacity can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a head slider support device of the present invention.

2 is an enlarged perspective view of the vicinity of a gimbal spring of the head slider support device of FIG.

3 is a cross-sectional view showing a cross section taken along the line AA of FIG.

FIG. 4 is a sectional view of a second embodiment of the head slider support device of the present invention.

FIG. 5 is a diagram showing a relationship between a rib height and a rib height required to obtain an out-of-plane rigidity equivalent to a flange height.

FIG. 6 is an enlarged perspective view of the vicinity of a gimbal spring of a third embodiment of the head slider support device of the present invention.

FIG. 7 is an enlarged perspective view of the vicinity of a gimbal spring of a fourth embodiment of the head slider support device of the present invention.

8 is a sectional view showing an AA section of the head slider supporting device of FIG.

9 is a cross-sectional view showing a BB cross section of the head slider support device of FIG.

FIG. 10 is a sectional view of a head slider support device according to a fifth embodiment of the present invention.

FIG. 11 is a perspective view showing a sixth embodiment of the head slider support device of the present invention.

12 is a lateral side view of the head slider support device of FIG.

FIG. 13 is a perspective view showing a seventh embodiment of the head slider support device of the present invention.

14 is a cross-sectional view showing a CC cross section of the head slider support device of FIG.

FIG. 15 is a perspective view showing an eighth embodiment of the head slider support device of the present invention.

16 is a sectional view showing a DD section of the head slider supporting device of FIG.

FIG. 17 is a plan view of a rigid portion of a suspension spring according to a ninth embodiment of the head slider support device of the present invention.

FIG. 18 is a cross-sectional view of the rigid portion of the suspension spring of the tenth embodiment of the head slider support device of the present invention.

FIG. 19 is a perspective view showing a magnetic disk device equipped with the head slider support device of the present invention.

FIG. 20 is a plan view showing a linear type magnetic disk device equipped with a head slider supporting device of the present invention.

FIG. 21 is a perspective view showing a conventional head slider support device.

FIG. 22 is an explanatory diagram showing stress concentration points of a conventional head slider support device.

FIG. 23 is an explanatory diagram showing the relationship between the disk spacing and the slider thickness.

[Explanation of symbols]

 1, 11 ... Suspension spring 2, 12 ... Gimbal spring 3, 13 ... Slider 4, 14 ... Rigid body portion 5, 15 ... Spring portion 6 ... Flange portion 7 ... Coupling portion 8 ... Flange end portion 10 ... Thin plate 16 ... Rib 17 ... Wiring sheet for printing 18 ... Access mechanism coupling portion 19 ... Slider joint portion 20 ... Gimbal flexible portion 21 ... Recording / reproducing head 22, 23 ... Reinforcing layer 24 ... Transverse beam 25 ... Hollow portion 26 ... Joining portion spacer 27 ... Lead wire Terminal part 41 ... Storage medium 42 ... Head slider support device 43 ... Guide arm 44 ... Positioning mechanism 45 ... Drive part 46 ... Cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihiko Shimizu 2880, Kozu, Odawara, Kanagawa Stock Company Hitachi Storage Systems Division (72) Inventor, Mikio Tokuyama 2880, Kozu, Odawara, Kanagawa Hitachi Storage Co., Ltd. System Division

Claims (8)

[Claims] 1. A gimbal spring including a mounting portion for mounting a slider having a recording / reproducing head and a flexible portion, and a suspension spring including a coupling portion for coupling to an access mechanism, a flexible spring portion and a rigid portion. The suspension spring supports the gimbal spring at an end portion opposite to the coupling portion side, and the rigid body portion is
A head slider support device characterized in that a deposit film is arranged on at least a part of the plate material of the suspension spring in order to impart rigidity to itself. 2. The head slider support device according to claim 1, wherein the gimbal spring is made of the same plate material as the plate material of the suspension spring. 3. The head slider support device according to claim 1, wherein the deposit films are provided on the front and back sides of a desired region of the plate material, respectively. 4. A gimbal spring and a suspension spring are formed on the same plate material having flexibility and a constant thickness, and the gimbal spring has a mounting portion for mounting a slider having a recording / reproducing head and a flexibility. The suspension spring comprises (1) a connecting portion arranged at an end opposite to the gimbal spring and connected to an access mechanism, and (2) an area where a deposit film is arranged to give rigidity to the plate material. A head slider support device comprising: a rigid body portion including (3) and a spring portion (3). 5. The head slider support device according to claim 4, wherein the deposit films are arranged on the front and back sides of a desired region of the plate material. 6. A gimbal spring and a suspension spring are formed on the same plate material having flexibility and a constant thickness, and the suspension spring imparts rigidity to the plate material.
The gimbal spring includes a rigid portion including a region where the deposit film is arranged, a coupling portion that couples to the access mechanism, and a spring portion.The gimbal spring includes a mounting portion that mounts a slider having a recording / reproducing head and a flexible portion, and A head slider support device, wherein at least three sides of the rigid body portion are arranged surrounded by the rigid body portion in a region opposite to a side connected to the spring portion. 7. The head slider support device according to claim 6, wherein the deposit films are arranged on the front and back sides of a desired region of the plate material, respectively. 8. A plurality of disk-shaped storage media, a plurality of recording / reproducing heads, sliders for respectively supporting the recording / reproducing heads, a head slider supporting device for respectively supporting the sliders, and a head slider supporting device. And a rotating disk storage device having access means for moving the head slider support device onto the storage medium, wherein the intervals of the disk-shaped storage media are in the range of 0.2 mm to 1.5 mm. The rotating disk storage device according to claim 1.