JPH05303856A - Magnetic head supporting device - Google Patents

Abstract

PURPOSE:To provide a magnetic head supporting device capable of restraining a rotary center positional shift and the fluctuation of a spring constant caused by the miniaturization and thinning of the device. CONSTITUTION:A gimbal spring 20 is provided with a center square section 8 connected to an inner frame type section 13 surrounding it with a bridge shape conecting section 9 and further the inner frame type section 13 is connected to an outside holding section 12 surrounding this with a bridge shape connecting section 11 formed in a direction vartical to the bridge shape connection section 9. Of inner frame type sections 13a and 13b constituting sides orthogonally crossing the recording medium travelling direction of the inner frame type section, the inner frame type section 13a of an SPM side is formed shorter in length and smaller in width than the inner frame type section 13b of an opposite side. Further, the inner frame type section 13c of the SPM side parallel to the recording medium travelling direction is formed smaller in width than the inner frame type section 13b of an opposite side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head supporting device for recording / reproducing information on / from a recording medium, and more particularly to a gimbal spring structure of the magnetic head supporting device.

[0002]

2. Description of the Related Art FIG. 30 is a side view showing an example of a conventional magnetic head supporting device. In the figure, 1 and 2 are an upper carrier and a lower carrier as supporting members for a recording medium 7, respectively. A gimbal spring 5 to which a magnetic head 6 is attached is attached to each tip of the carrier 1 and the lower carrier 2. Although not shown, a pivot that is in pressure contact with the gimbal spring 5 projects from the upper carrier 1 and the lower carrier 2 at the center of the back surface of the gimbal spring 5, and the magnetic head 6 is not displaced by this pivot. Thus, the back face center of the magnetic head 6 is supported via the gimbal spring 5. The upper carrier 1 is attached to the lower carrier 2 by a spring 3, and the magnetic head 6 can be rotated up and down with this as a fulcrum. Reference numeral 4 denotes a spring member. The spring member 4 presses the upper carrier 1 toward the lower carrier 2, and the magnetic heads 6 are applied to both surfaces of a recording medium 7 such as a magnetic disk.
Are in contact with each other.

The gimbal spring 5 is formed by punching or etching a thin plate of spring material.
As shown in FIG. 1, the central rectangular portion 8 is continuous with the inner frame-shaped portion 10 surrounding it and the bridge-shaped connecting portion 9 as the first connecting portion, and the inner frame-shaped portion 10 further connects with the outer holding portion 12 surrounding it. The bridge-shaped connecting portions 11 as two connecting portions are connected. At the center of the gimbal spring 5, the magnetic head 6
Are arranged. Here, the bridge-shaped connecting portion 11 is formed in a direction perpendicular to the bridge-shaped connecting portion 9.

The central rectangular portion 8 of the gimbal spring 5 in the above-described conventional magnetic head supporting device constructed as described above is
A rotary motion about the axis of rotation XX, a rolling motion about the axis of rotation Y-Y, ie a pitching motion, and a translational motion perpendicular to the drawing are possible. In addition, in FIG. 31,
The central square portion 8 has a degree of freedom in the recording medium circumferential direction with respect to the middle frame portion 10, and the middle frame portion 10 has a degree of freedom in the recording medium radial direction with respect to the outer holding portion 12. However, these can be interchanged with each other.

However, when developing a compact and thin recording apparatus, interference with various mechanisms such as a spindle motor (hereinafter referred to as SPM) for driving a recording medium, a drive mechanism for driving a carrier, and a circuit board occurs. However, in order to eliminate this interference, it is necessary to reduce the size of the magnetic head supporting device on the interfering side, and there is a problem that the size of the conventional magnetic head supporting device cannot eliminate the interference.

FIG. 32 is a plan view showing another example of the gimbal spring in the conventional magnetic head supporting device. The gimbal spring 5 has the XX axis (and YY shown in FIG. 31).
The shape of the gimbal spring 5 that is symmetric with respect to the (axis) is made asymmetric with respect to the XX axis by shortening the upper portion of the middle frame-shaped portion 10 in the drawing.

The gimbal spring 5 thus constructed has
Although the magnetic head supporting device is made smaller and thinner to eliminate the above interference, the spring constant of the spring element of the middle frame-shaped portion 10 which is shortened in the upper part of the drawing increases, so that the magnetic force in the rolling direction is increased. The center of rotation will be displaced to a position above the XX axis in the figure.

FIG. 33 shows, for example, Japanese Patent Laid-Open No. 62-264475.
32 is a plan view showing another example of the gimbal spring in the conventional magnetic head supporting device described in Japanese Patent Publication No. JP-A-2003-138, which is similar to the gimbal spring 5 shown in FIG.
The widths W ₁ and W ₂ of the portion of the middle frame-shaped portion 10 that forms a side parallel to the recording medium running direction in the direction perpendicular to the running direction are smaller on the upstream side W ₁ than on the downstream side W _2. It is supposed to do.

The gimbal spring 5 thus constructed has
The steel property of the central rectangular portion 8 becomes small on the upstream side and becomes large on the downstream side, and the overall steel property does not change, and the occurrence of inclination of the magnetic head 6 during recording and reproduction is prevented by the steel property on the downstream side. The contact state between the magnetic head 6 and the recording medium 7 can be stabilized. However, if the gimbal spring 5 shown in FIG. 32 is made smaller and thinner in the same manner as the gimbal spring 5, the length of the middle frame-shaped portion 10 is different between front and rear or left and right, and similarly, the rotation center position cannot be held and the spring is not held. The constant increases, stable recording and reproduction cannot be performed, and the risk of scratching the recording medium 7 also increases.

FIG. 34 shows, for example, Shoukai 62-171042.
FIG. 9 is a plan view showing another example of the gimbal spring in the conventional magnetic head supporting device described in Japanese Patent Laid-Open Publication No. 2004-242242, in which the gimbal spring 5 includes a central rectangular portion 8 including a bridge-shaped connecting portion 9 and an outer frame-shaped portion 10. A viscoelastic member 15 such as silicon is applied between the two.

The gimbal spring 5 thus constructed has
Although the viscoelastic member 15 acts to suppress the vibration of the magnetic head 6 and stable recording / reproducing can be performed, the viscoelastic member 15 is formed in the groove between the central rectangular portion 8 and the outer frame-shaped portion 12. Since it is passed, the spring constant of the gimbal spring 5 increases, and the risk of causing scratches on the recording medium 7 increases.

FIG. 35 shows, for example, Shoukai 60-192174.
FIG. 36 is a perspective view showing another example of the gimbal spring in the conventional magnetic head supporting device described in Japanese Patent Publication No. JP-A-2003-242242.
FIG. 6 is a cross-sectional view taken along the line XXXVI-XXXVI, in which the gimbal spring 5 is configured such that the plate thickness of the middle frame-shaped portion 10 is thicker than that of the bridge-shaped connecting portions 9 and 11.

The gimbal spring 5 thus constructed has
Although the stress can be relaxed in the middle frame-shaped portion 10, stress relaxation is not performed in the vicinity of the bridge-shaped connecting portions 9 and 11 where dangerous stress occurs, and the steel property of the middle frame-shaped portion 10 increases. for,
The spring constant increases, stable recording / reproducing cannot be performed, and the risk of scratching the recording medium 7 increases.

[0014]

Since the conventional magnetic head supporting device is constructed as described above, when it is mounted on a small and thin recording / reproducing device, the gimbal spring 5 can be downsized, and SPM, various types can be used. Although the interference with the device, the circuit board and the like is eliminated, there is a problem that the device performance is deteriorated as described below with the downsizing of the gimbal spring 5.

To reduce the size of the gimbal spring 5, as in the gimbal spring 5 shown in FIG. 32, when one side of the middle frame-shaped portion 10 orthogonal to the traveling direction of the recording medium 7 is shortened, it is shortened. The spring constant of the spring element on the closed side increases, the center of rotation moves from the conventional design position, and stable recording / reproduction cannot be performed.

If both sides of the side of the middle frame-shaped portion 10 orthogonal to the running direction of the recording medium 7 are shortened, the rotation center position deviation can be prevented, but the rotation and translation spring constants of the gimbal spring 5 can be prevented. Increases with respect to the spring constant of the conventional design value, the variation in the initial posture of the magnetic head 6 cannot be absorbed, and the waviness of the recording medium 7 cannot be tracked.
The durability of the recording medium deteriorates.

Furthermore, since the compact and thin recording / reproducing apparatus has an advantage of being incorporated in a portable computer, it is necessary to have a shock resistance higher than the conventional shock resistance, and a high load is applied to the gimbal spring 5. It has become necessary that no plastic deformation occurs even if it acts. However, FIGS.
The conventional structure of the gimbal spring 5 shown in FIG. 2 has a limit in impact resistance, and cannot be mounted in a recording / reproducing device corresponding to a portable type with the structure as it is. Moreover, if the spring constant of the gimbal spring 5 that is small and thin is made equal to that of the conventional spring constant, it is necessary to reduce the steel properties of the middle frame-shaped part 10 and the bridge-shaped connecting part 11, and the simple steel properties of The lowering is performed by connecting the central rectangular portion 8 and the bridge-shaped connecting portion 9 which are fulcrums of the respective portions when a force such as bending acts, and the middle frame-shaped portion 10 and the bridge-shaped connecting portions 9 and 11. This leads to an increase in concentrated stress generated in the connection part and the connection part between the outer holding part 12 and the bridge-shaped connection part 11,
This is contrary to the improvement in impact resistance.

The present invention has been made to solve the above problems, and when mounted on a compact and thin recording / reproducing apparatus, the deviation of the rotation center due to the miniaturization and thinning is reduced, and the spring constant is reduced. It is an object of the present invention to obtain a magnetic head supporting device capable of suppressing the fluctuation of the magnetic field and satisfying the shock resistance.

[0019]

A magnetic head supporting device according to claim 1 of the present invention comprises a gimbal spring for mounting a magnetic head and a supporting member for supporting the gimbal spring, and the gimbal spring fixes the magnetic head. A central square portion, an inner frame-shaped portion provided outside the central square portion, an outer holding portion provided outside the intermediate frame-shaped portion and supported by a supporting member, and a pair of opposite sides of the central square portion. A pair of narrow first connecting portions that are respectively connected to the middle frame-shaped portion, and a pair of opposite sides of the middle frame-shaped portion that are perpendicular to the connecting direction of the pair of first connecting portions are connected to the outer holding portions, respectively. And a pair of second connecting portions having a narrow width, wherein at least one pair of opposing sides of the middle frame-shaped portion is connected to the one side of the first or second connecting portion. Is formed shorter than the other side, Short formed sides of the width of the frame-shaped portion is one that is narrower with respect to long-formed sides of the width.

Further, in the magnetic head supporting device according to the second aspect of the present invention, at least a pair of facing sides of the middle frame-shaped portion are connected to one side of the first or second connecting portion. The thickness of the middle frame portion is shorter than that of the side, and the thickness of the side of the middle frame-shaped portion that is shortened is smaller than that of the side that is long.

Further, in the magnetic head supporting device according to the third aspect of the present invention, at least a pair of opposing sides of the middle frame-shaped portion are connected to the sides at one side of the first or second coupling portion. The width of the first or second connecting portion that is formed shorter than the other side and that is connected to the shorter formed side of the middle frame-shaped portion is the first or the first connected to the longer formed side. The width is narrower than the width of the two connecting portions.

Further, in the magnetic head supporting apparatus according to the fourth aspect of the present invention, at least a pair of opposing sides of the middle frame-shaped portion are connected to one side of the first or second coupling portion. It is formed to be shorter than the side of, and the viscoelastic member is disposed on at least a part of the side of the middle frame-shaped portion formed longer.

Further, in the magnetic head supporting device according to the fifth aspect of the present invention, the width of at least one side of the middle frame-shaped portion is
It is formed to be wide in a region close to the first or second connecting portion connected to one of the sides and narrow in a region not close to the first or second connecting portion.

Further, in the magnetic head supporting device according to the sixth aspect of the present invention, the second connecting portion is formed parallel to the running direction of the recording medium, and the width of the second connecting portion is equal to that of the first connecting portion. It is formed wider than the width.

Further, in the magnetic head supporting apparatus according to the seventh aspect of the present invention, an area in which at least one of the first connecting portion and the second connecting portion is not close to the first and second connecting portions of the middle frame-shaped portion. It is formed thicker than the plate thickness.

Further, in the magnetic head supporting apparatus according to the eighth aspect of the present invention, the viscoelastic member is arranged at least at either the first connecting portion or the second connecting portion.

[0027]

In the magnetic head support device according to the first aspect of the present invention, at least a pair of opposing sides of the middle frame-shaped portion is connected to one side of the first or second coupling portion and the other side is connected to the other side. Since it is formed shorter than the side, the interference with the SPW, the circuit board, etc. is eliminated, and the interference with the SPW, the circuit board, etc., which occurs at the time of miniaturization and thinning is eliminated. In addition, since the width of the side of the middle frame-shaped portion on which the shorter side is formed is narrower than the width of the side of the longer formed side, the width of the middle frame-shaped portion formed on the shorter side is narrower. It is possible to suppress the increase in steelness as a spring element due to the decrease in the steelness of the formed side and the reduction of the portion of the short frame-shaped portion that acts as a spring, and the asymmetry tendency of the spring element is reduced. Therefore, it is possible to suppress the deviation of the center of rotation and further suppress the increase of the spring constant.

Further, in the magnetic head supporting device according to the second aspect of the present invention, the plate thickness on the side where the middle frame portion is formed short is formed thinner than the plate thickness on the side where it is formed longer. Therefore, the steel property of the side where the plate thickness of the middle frame part is thin is decreased, and the part of the short frame part that acts as a spring is reduced, and the steel property as a spring element is increased. Can be suppressed, the asymmetry tendency of the spring element can be reduced, the deviation of the rotation center can be suppressed, and the increase of the spring constant can also be suppressed.

Further, in the magnetic head supporting apparatus according to the third aspect of the present invention, the width of the first or second connecting portion connected to the shorter side of the middle frame-shaped portion is longer. Since it is formed narrower than the width of the first or second connecting portion that is connected to the first or second connecting portion, the steel property of the first or second connecting portion formed to be narrow is reduced, and the middle frame-shaped portion formed to be short It is possible to suppress the increase in steelness as a spring element due to the decrease in the portion acting as a spring of the spring element, reduce the asymmetry tendency of the spring element, suppress the deviation of the rotation center, and further increase the spring constant. Can also be suppressed.

Further, in the magnetic head supporting apparatus according to the fourth aspect of the present invention, since the viscoelastic member is disposed on at least a part of the long side of the middle frame-shaped portion, it is formed long. The steel property of the middle frame-shaped part on the side increases, and the part of the short frame-shaped part that acts as a spring decreases, which balances with the increase in the steel property as a spring element, and the asymmetry tendency of the spring element decreases. Therefore, the deviation of the rotation center can be suppressed.

Further, in the magnetic head supporting apparatus according to the fifth aspect of the present invention, the width of at least one side of the middle frame-shaped portion is close to the first or second connecting portion connected to the one side. The first or second connecting portion is wide, and the first or second connecting portion is not formed close to the first connecting portion.
The steel property of the spring element in the region of the wide middle frame-shaped portion adjacent to the connecting portion is increased, the stress concentrated in the region of the middle frame-shaped portion can be relaxed, and the impact resistance can be improved. The steel property of the spring element in the region of the narrow middle frame-shaped portion which is not close to the first or second connecting portion is lowered, and the change in steel property of the spring element as a whole can be suppressed.

Further, in the magnetic head supporting apparatus according to the sixth aspect of the present invention, the second connecting portion is formed parallel to the running direction of the recording medium, and the width of the second connecting portion is equal to the first connecting portion. Since it is formed wider than the width, the steel property at the second connecting portion can be increased, the stress concentrated on the second connecting portion can be relaxed, and the impact resistance can be improved.

Further, in the magnetic head supporting apparatus according to the seventh aspect of the present invention, at least one of the first connecting portion and the second connecting portion does not come close to the first and second connecting portions of the middle frame-shaped portion. Since it is formed thicker than the plate thickness of the region, the steel properties of the first and second connecting portions formed with the plate thickness are increased, the stress concentrated in the region can be relaxed, and the impact resistance is improved. Can be improved.

Further, in the magnetic head supporting apparatus according to the eighth aspect of the present invention, since the viscoelastic member is disposed in at least one of the first connecting portion and the second connecting portion, the viscoelastic member is The steel properties of the arranged first and second connecting portions are increased, and the stress concentrated in the region can be relaxed, and the impact resistance can be improved.

[0035]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. FIG. 1 is a plan view of a gimbal spring in a magnetic head supporting apparatus showing an embodiment according to claim 1 of the present invention. In the figure, the same or corresponding parts as those of the conventional gimbal spring shown in FIGS. The same code is attached,
The description is omitted.

The gimbal spring 20 according to the first embodiment is
The central rectangular portion 8 is continuous with the middle frame-shaped portion 13 surrounding it and the bridge-shaped connecting portion 9, and the middle frame-shaped portion 13 is further formed in the direction perpendicular to the outer holding portion 12 surrounding this and the bridge-shaped connecting portion 9. The bridge-shaped connecting portions 11 are continuously arranged. here,
In the middle frame-shaped portion 13 of the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction, the length of the middle frame-shaped portion 13a on the SPW side is shortened and the middle frame-shaped portion 13a is formed.
The width W _13a narrower than the width W _13b of the frame-shaped portion 13b in the opposite side of the further frame portion 13c in constituting the sides parallel to the recording medium conveying direction, at 13d, frame-like in the SPW side The width W _{13c of the} portion 13c is narrower than the width W _13d of the inner frame portion 13d on the opposite side.

Assuming that the spring element of the middle frame-shaped portion 13 is a cantilever having a rectangular cross section, it has steelness k shown in (Equation 1) for bending. However, W is the load at the beam tip, x is the displacement at the beam tip, E is the longitudinal elastic modulus, L is the beam width, and h is the plate thickness of the beam.

[0038]

[Equation 1]

From the above (formula 1), the middle frame-shaped portion 1 on the SPW side
When the length of 3a is reduced, the steel property of the spring element on the SPW side increases, but since the width of the middle frame-shaped portions 13a and 13c on the SPW side is narrowed, the increase of the steel property of the spring element is suppressed. Therefore, the center of rotation can be brought closer to the conventional design position without significantly changing the spring constant of the gimbal spring 20.

As described above, according to the first embodiment, since the gimbal spring 20 is miniaturized, interference with the SPW or the like can be prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, since the displacement of the rotation center position and the variation of the spring constant of the gimbal spring 20 due to the miniaturization of the gimbal spring 20 are suppressed, the rotation center position and the gimbal spring 20 which have been conventionally designed even when the size and thickness are reduced. A new magnetic head support system that is small and thin can be easily designed by using the spring constant, stable recording and reproduction can be performed, and the recording medium 7 is not scratched.

Example 2. FIG. 2 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 1 of the present invention. In the first embodiment described above, the shape of the inner frame-shaped portion 13 that constitutes the gimbal spring 20 is set such that the length of the inner frame-shaped portion 13a on the SPW side is shortened and the inner frame-shaped portion 13 is formed.
The width W _{13a of a} is narrower than the width W _13b of the inner frame portion 13b on the opposite side, and the width W _13c of the inner frame portion 13c on the SPW side is set to the width W _{13d of the} inner frame portion 13d on the opposite side. However, in the second embodiment, the length of the middle frame-shaped portion 13a is shortened, and the width W _13c of the middle frame-shaped portion 13c is set to be smaller than the width of the opposite middle frame-shaped portion 13d. It should be narrower than W _13d ,
Has the same effect.

Example 3. FIG. 3 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 1 of the present invention. In the first embodiment described above, the shape of the inner frame-shaped portion 13 that constitutes the gimbal spring 20 is set such that the length of the inner frame-shaped portion 13a on the SPW side is shortened and the inner frame-shaped portion 13 is formed.
The width W _{13a of a} is narrower than the width W _13b of the inner frame portion 13b on the opposite side, and the width W _13c of the inner frame portion 13c on the SPW side is set to the width W _{13d of the} inner frame portion 13d on the opposite side. However, in the third embodiment, the length of the middle frame-shaped portion 13a is shortened, and the width W _13a of the middle frame-shaped portion 13a is set to be smaller than the width of the opposite middle frame-shaped portion 13b. It should be narrower than W _13b ,
Has the same effect.

Example 4. FIG. 4 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 1 of the present invention. In the first embodiment described above, the shape of the inner frame-shaped portion 13 that constitutes the gimbal spring 20 is set such that the length of the inner frame-shaped portion 13a on the SPW side is shortened and the inner frame-shaped portion 13 is formed.
The width W _{13a of a} is narrower than the width W _13b of the inner frame portion 13b on the opposite side, and the width W _13c of the inner frame portion 13c on the SPW side is set to the width W _{13d of the} inner frame portion 13d on the opposite side. However, in the fourth embodiment, the length of the middle frame-shaped portion 13a is shortened and the width of the middle frame-shaped portion 13a is set to the opposite side.
The width is smaller than the width of b, and the width of the middle frame-shaped portion 13c is narrower than the width of the opposite middle frame-shaped portion 13d, and the same effect is obtained.

Example 5. FIG. 5 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to the first aspect of the present invention. In the fifth embodiment, the object of interference is a circuit board. In the fifth embodiment, the shape of the inner frame-shaped portion 14 that constitutes the gimbal spring 20 is such that the length of the inner frame-shaped portion 14c on the downstream side of the recording medium 7 is shortened and the width W _{14c of the} inner frame-shaped portion 14c is _reduced. Is the width W of the opposite middle frame portion 14d
And narrower than the _14d, and shall further narrower than the width W _14b of the frame-shaped portion 14b in the opposite side width W _14a of the frame-shaped portion 14a in the downstream side, the same effect as in Example 1 Play.

Example 6. 6 (a) and 6 (b) are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing an embodiment according to claim 2 of the present invention, respectively. In the gimbal spring 20 according to the sixth embodiment, the central rectangular portion 8 is connected to the inner frame-shaped portion 13 surrounding it by the bridge-shaped connecting portion 9, and the inner frame-shaped portion 13 is further bridged to the outer holding portion 12 surrounding it. A bridge-shaped connecting portion 11 formed in a direction perpendicular to the portion 9 is formed continuously. Here, the middle frame-shaped portion 13 shortens the length of the middle frame-shaped portion 13a on the SPW side in the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction, and The plate thickness of 13a is made smaller than the plate thickness of the inner frame-shaped portion 13b on the opposite side, and further, in the inner frame-shaped portions 13c and 13d constituting the side parallel to the recording medium running direction, the SPW-side inner frame-shaped portion is formed. The plate thickness of 13c is made thinner than the plate thickness of the inner frame portion 13d on the opposite side.

From the above (formula 1), the middle frame-shaped portion 1 on the SPW side
If the length of 3a is reduced, the steel property of the spring element on the SPW side increases, but since the width of the middle frame-shaped portions 13a, 13c on the SPW side is narrowed, the steel property of the spring element increases. Therefore, the center of rotation can be brought close to the conventional design position without significantly changing the spring constant of the gimbal spring 20.

As described above, according to the sixth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPW or the like is prevented, and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, since the shift of the rotational center position due to the miniaturization of the gimbal spring 20 is suppressed, stable recording / reproducing can be performed, and the recording medium 7 is not scratched.

Example 7. 7A and 7B are a plan view and a sectional view of a main part of a gimbal spring in a magnetic head support device showing another embodiment according to claim 2 of the present invention. In the sixth embodiment, the shape of the middle frame-shaped portion 13 that constitutes the gimbal spring 20 is changed to the middle frame-shaped portion 13 on the SPW side.
In addition to shortening the length of a, the thickness of the middle frame-shaped portion 13a is made smaller than the thickness of the opposite middle frame-shaped portion 13b, and the plate thickness of the SPW-side middle frame-shaped portion 13c is reversed. Middle frame-shaped part 1 on the side
Although it is assumed that the thickness is smaller than the plate thickness of 3d, in the seventh embodiment, the length of the inner frame-shaped portion 13a on the SPW side is shortened, and the plate thickness of the inner frame-shaped portion 13a is set on the opposite side. Shape 1
It is thinner than the plate thickness of 3b, and the inner frame portions 13a, 1
It is assumed that the plate thicknesses of 3c and 13d are equal,
Has the same effect.

Example 8. 8A and 8B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 2 of the present invention. In the sixth embodiment, the shape of the middle frame-shaped portion 13 that constitutes the gimbal spring 20 is changed to the middle frame-shaped portion 13 on the SPW side.
While shortening the length of a, the plate thickness of the middle frame-shaped portion 13a is made smaller than the plate thickness of the opposite middle frame-shaped portion 13b, and S
The plate thickness of the inner frame-shaped portion 13c on the PW side is set to the thickness of the inner frame-shaped portion 13d on the opposite side.
However, in the eighth embodiment, the length of the inner frame-shaped portion 13a on the SPW side is shortened and the plate thickness of the inner frame-shaped portion 13c on the SPW side is set to the opposite side. The thickness is smaller than the plate thickness of the middle frame-shaped portion 13d, and the middle frame-shaped portion 13
It is assumed that the plate thicknesses of a, 13b, and 13c are equal to each other, and the same effect is obtained.

Example 9. 9A and 9B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 2 of the present invention. The target is a circuit board. In the ninth embodiment, the shape of the inner frame-shaped portion 14 constituting the gimbal spring 20 is set such that the length of the inner frame-shaped portion 14c on the downstream side of the recording medium 7 is shortened and the inner frame-shaped portion 14a on the downstream side is formed. The plate thickness is made smaller than the plate thickness of the middle frame-shaped portion 14b on the upstream side, and the plate thicknesses of the middle frame-shaped portions 14a, 14c, and 14d are made equal, and the same effect as that of the above-described sixth embodiment is obtained. Play.

Example 10. FIG. 10 shows claim 3 of the present invention.
FIG. 6 is a plan view of a gimbal spring in the magnetic head support device showing the embodiment according to the present invention. In the gimbal spring 20 according to the tenth embodiment, the central rectangular portion 8 is connected to the inner frame-shaped portion 13 surrounding it by the bridge-shaped connecting portion 9, and the central frame-shaped portion 13 is further bridged to the outer holding portion 12 surrounding it. A bridge-shaped connecting portion 11 formed in a direction perpendicular to the portion 9 is formed continuously. Here, in the middle frame-shaped portions 13a and 13b forming the sides orthogonal to the recording medium running direction, the length of the middle frame-shaped portion 13a on the SPW side is shortened and the bridge forming the side orthogonal to the recording medium running direction is formed. Regarding the widths of the bridge-like connecting portions 9a and 9b, the width of the bridge-like connecting portion 9a on the SPW side is narrower than the width of the bridge-like connecting portion 9b on the opposite side.

From the above (formula 1), the middle frame-shaped portion 1 on the SPW side
When the length of 3a is reduced, the steel property of the spring element on the SPW side rises, but since the width of the bridge-shaped connecting portion 9a on the SPW side is narrowed, the effective spring length of the middle frame-shaped portion 13c is increased. Is increased, the increase in steel property of the spring element is suppressed, and the center of rotation can be brought close to the conventional design position without significantly changing the spring constant of the gimbal spring 20.

As described above, according to the tenth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPW or the like can be prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, since the shift of the rotational center position due to the miniaturization of the gimbal spring 20 is suppressed, stable recording / reproducing can be performed, and the recording medium 7 is not scratched.

Example 11. FIG. 11 shows claim 3 of the present invention.
FIG. 13 is a plan view of a gimbal spring in a magnetic head supporting device according to another embodiment of the present invention. In the eleventh embodiment, the circuit board is the object of interference. In the eleventh embodiment, the shape of the middle frame-shaped portion 14 that constitutes the gimbal spring 20 is set such that the length of the middle frame-shaped portion 14c on the downstream side of the recording medium 7 is shortened and the bridge-shaped connecting portion 11a on the downstream side is formed. The width is made narrower than the width of the bridge-shaped connecting portion 11b on the upstream side, and the same effect as that of the tenth embodiment is obtained.

Example 12 12 (a) and 12 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head supporting device showing an embodiment according to claim 4 of the present invention, respectively. Gimbal spring 20 according to the twelfth embodiment
Is formed by connecting the central rectangular portion 8 with the middle frame-shaped portion 13 surrounding it and the bridge-shaped connecting portion 9, and the middle frame-shaped portion 13 is further formed in the direction perpendicular to the outer holding portion 12 surrounding this and the bridge-shaped connecting portion 9. The bridge-shaped connecting portions 11 are connected to each other. Here, the middle frame-shaped portion 13 shortens the length of the middle frame-shaped portion 13a on the SPW side among the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction, and 13b
A viscoelastic member 15 such as a silicone resin is applied or adhered to the inner frame-shaped portion 13d which is parallel to the recording medium running direction and opposite to the SPW.

From the above (formula 1), the middle frame-shaped portion 1 on the SPW side
When the length of 3a is reduced, the steel property of the spring element on the SPW side increases, but the viscoelastic member 1 is added to the inner frame-shaped portions 13b and 13d.
5, the thickness of the middle frame portions 13b and 13d is increased, and the steel property of the spring element on the side opposite to the SPM side is increased,
The center of rotation can be brought closer to the conventional design position. Further, the vibration effect of the viscoelastic member 15 can suppress the vibration of the gimbal spring 20.

As described above, according to the twelfth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPW or the like is prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, the displacement of the rotation center position due to the miniaturization of the gimbal spring 20 is suppressed, and the vibration of the gimbal spring 20 can be suppressed, so that stable recording / reproducing can be performed and the recording medium 7 can be scratched. Absent.

Example 13 13A and 13B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 4 of the present invention, respectively. In the twelfth embodiment, the gimbal spring 2
The shape of the middle frame-shaped portion 13 forming 0 is such that the length of the middle frame-shaped portion 13a on the SPW side is shortened, and the viscoelastic member 15 is arranged in the middle frame-shaped portion 13b and the middle frame-shaped portion 13d. However, in the thirteenth embodiment, the length of the inner frame-shaped portion 13a on the SPW side is shortened and the viscoelastic member 15 is provided only in the inner frame-shaped portion 13b, and the same effect is obtained.

Example 14 14 (a) and 14 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 4 of the present invention, respectively. In the twelfth embodiment, the gimbal spring 2
The shape of the middle frame-shaped portion 13 forming 0 is such that the length of the middle frame-shaped portion 13a on the SPW side is shortened, and the viscoelastic member 15 is arranged in the middle frame-shaped portion 13b and the middle frame-shaped portion 13d. However, in the fourteenth embodiment, the length of the inner frame-shaped portion 13a on the SPW side is shortened and the viscoelastic member 15 is provided only in the inner frame-shaped portion 13d, and the same effect is obtained.

Example 15 15 (a) and 15 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 4 of the present invention, respectively. In the twelfth embodiment, the gimbal spring 2
The shape of the middle frame-shaped portion 13 forming 0 is such that the length of the middle frame-shaped portion 13a on the SPW side is shortened, and the viscoelastic member 15 is arranged in the middle frame-shaped portion 13b and the middle frame-shaped portion 13d. However, in the fifteenth embodiment, the length of the inner frame-shaped portion 13a on the SPW side is shortened, and the inner frame-shaped portions 13a, 1
In comparison with the thickness of the viscoelastic member 15a in FIG.
The viscoelastic member 15 is arranged in the middle frame-shaped portion 13 so as to increase the thickness of the viscoelastic member 15b in b and 13d,
Has the same effect.

Example 16. 16 (a) and 16 (b) are a plan view and a sectional view of a main part of a gimbal spring in a magnetic head supporting apparatus showing another embodiment according to claim 4 of the present invention, respectively. The target is a circuit board. In the sixteenth embodiment, the shape of the middle frame-shaped portion 14 that constitutes the gimbal spring 20 is such that the length of the middle frame-shaped portion 14c on the downstream side of the recording medium 7 is shortened, and the middle frame-shaped portion 14b on the downstream side is formed. The viscoelastic member 15 is provided in 14d, and the same effect as that of the above-described twelfth embodiment is obtained.

Example 17 FIG. 17 shows claim 5 of the present invention.
FIG. 6 is a plan view of a gimbal spring in the magnetic head support device showing the embodiment according to the present invention. In the gimbal spring 20 according to the seventeenth embodiment, the central rectangular portion 8 is connected to the inner frame-shaped portion 13 surrounding it by the bridge-shaped connecting portion 9, and the inner frame-shaped portion 13 is further bridged to the outer holding portion 12 surrounding it. A bridge-shaped connecting portion 11 formed in a direction perpendicular to the portion 9 is formed continuously. Here, the middle frame-shaped portion 13 is the SP of the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction.
While shortening the length of the W-side middle frame-shaped portion 13a, the width of the SPW-side middle frame-shaped portion 13c which is parallel to the recording medium running direction is wide in the area close to the bridge-shaped connecting portion 9a and not close to it. It's narrowed down.

The gimbal spring 20 having the above structure
The steel property of the wide middle frame-shaped portion 13c region near the bridge-shaped connecting portion 9a is increased, and the stress generated in the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed, and The steel property can be reduced in the region of the middle frame-shaped portion 13c having a narrow width, and the increase in steel property of the spring element can be suppressed.

As described above, according to the seventeenth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPW or the like is prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, the wide middle frame-shaped portion 1 near the bridge-shaped connecting portion 9a
Since the 3c region is formed, the stress generated at the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed, and the impact resistance can be improved without increasing the steel property of the spring element. It is possible to easily design a compact and thin magnetic head support system that satisfies impact resistance.

Example 18. FIG. 18 shows claim 5 of the present invention.
FIG. 11 is a plan view of a gimbal spring in a magnetic head support device showing another embodiment according to the present invention. In the seventeenth embodiment, the middle frame-shaped portion 13 of the gimbal spring 20 is shortened in the length of the middle frame-shaped portion 13a on the SPW side, and the width of the middle frame-shaped portion 13c on the SPW side is bridged. Although it is assumed that the area close to the portion 9a is wide and the area close to the portion 9a is narrow, the length of the inner frame-shaped portion 13a on the SPW side is shortened and the inner frame-shaped portions 13a and 13b of the eighteenth embodiment are made smaller. Width,
The area is wide in the area close to the bridge-like connecting portion 11 and narrow in the area not close to the bridge-shaped connecting portion 11.

Gimbal spring 20 according to the eighteenth embodiment
Is a wide middle frame-shaped portion 13a, 1 near the bridge-shaped connecting portion 11.
The steel property in the 3b region is increased, and the stress generated in the connecting portion between the bridge-shaped connecting portion 11 and the middle frame-shaped portions 13a and 13b can be relaxed,
In addition, the steel properties can be reduced in the narrow inner frame portions 13a and 13b regions to suppress the increase in the steel properties of the spring element, and the same effect as that of the seventeenth embodiment can be obtained.

Example 19 FIG. 19 shows claim 5 of the present invention.
FIG. 20 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to the present invention, and in the nineteenth embodiment, the object of interference is a circuit board. In the above Example 19,
In the middle frame-shaped portion 14 that constitutes the gimbal spring 20, the length of the middle frame-shaped portion 14c on the SPW side is shortened, and the width of the middle frame-shaped portion 14a on the downstream side of the recording medium 7 is set to the bridge-shaped connecting portion 11a.
The region similar to the seventeenth embodiment has the same effect as the region close to the first region and the region close to the second region is narrowed.

Example 20. FIG. 20 shows claim 6 of the present invention.
FIG. 6 is a plan view of a gimbal spring in the magnetic head support device showing the embodiment according to the present invention. In the gimbal spring 20 according to Example 20, the central rectangular portion 8 is connected to the inner frame-shaped portion 13 surrounding it by the bridge-shaped connecting portion 9, and the inner frame-shaped portion 13 is further bridged to the outer holding portion 12 surrounding it. A bridge-shaped connecting portion 11 formed in a direction perpendicular to the portion 9 is formed continuously. Here, the middle frame-shaped portion 13 is the SP of the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction.
The length of the W-side middle frame-shaped portion 13a is shortened, and the width of the bridge-shaped connecting portion 11 parallel to the recording medium running direction is wider than the width of the bridge-shaped connecting portion 9 perpendicular to the recording medium running direction. is doing.

The gimbal spring 20 having the above structure
Indicates that the steel property of the bridge-like connecting portion 11 is increased and the stress generated in the connecting portion between the bridge-like connecting portion 11 and the outer holding portion 12 and the stress generated in the connecting portion between the bridge-like connecting portion 11 and the middle frame-like portion 13 Therefore, the gap between the upper and lower carriers 1 and 2 and the bridge-shaped connecting portion 11 when the outer holding part 12 is attached to the upper and lower carriers 1 and 2 can be reduced. Moreover, since the width of the middle frame-shaped portion 13 is not changed, it is possible to suppress an increase in the steel property of the spring element.

As described above, according to the twentieth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPW or the like can be prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Furthermore, since the width of the bridge-shaped connecting portion 11 is formed to be larger than the width of the bridge-shaped connecting portion 9, the bridge-shaped connecting portion 11 and the middle frame-shaped portion 13 and the outer frame holding portion 12 are connected to each other. The stress can be relieved, and the impact resistance can be improved without increasing the steel property of the spring element.

Example 21. FIG. 21 shows claim 6 of the present invention.
FIG. 11 is a plan view of a gimbal spring in a magnetic head support device showing another embodiment according to the present invention. In Example 20, the length of the middle frame-shaped portion 13a of the SPW side of the middle frame-shaped portion 13 that constitutes the gimbal spring 20 is shortened, and the bridge-shaped connecting portion 1 is used.
Although the width of 1 is made wider than the width of the bridge-shaped connecting portion 9, in this Example 21, the bridge-shaped connecting portion 9a on the SPW side is further made wider than the bridge-shaped connecting portion 9b on the opposite side. Also, the stress generated at the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13 can be relaxed.

Example 22. FIG. 22 shows claim 6 of the present invention.
FIG. 23 is a plan view of a gimbal spring in a magnetic head supporting device according to another embodiment of the present invention, and in the twenty-second embodiment, the object of interference is a circuit board. In Example 22 above,
In the middle frame-shaped portion 14 constituting the gimbal spring 20, the length of the middle frame-shaped portion 14c on the SPW side is shortened, and the width of the bridge-shaped connecting portion 11 is made wider than the width of the bridge-shaped connecting portion 9. Thus, the same effect as that of the 20th embodiment can be obtained.

Example 23. 23 (a) and 23 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head support device showing an embodiment according to claim 7 of the present invention, respectively. Gimbal spring 20 according to Example 23 above
Is formed by connecting the central rectangular portion 8 to the middle frame-shaped portion 13 surrounding it and the bridge-shaped connecting portion 9, and the middle frame-shaped portion 13 is formed in a direction perpendicular to the outer holding portion 12 surrounding the central rectangular-shaped portion 13 and the bridge-shaped connecting portion 9. The bridge-shaped connecting portions 11 are connected to each other. Here, the gimbal spring 20 includes the middle frame-shaped portion 13 of the middle frame-shaped portions 13a and 13b orthogonal to the traveling direction of the recording medium on the SPW side.
In addition to shortening the length of a, the plate thickness of the bridge-shaped connecting portion 9a perpendicular to the recording medium running direction, and the plate thickness of a region near the bridge-shaped connecting portion 9a of the middle frame-shaped portion 13c horizontal to the recording medium running direction Also, the plate thickness of the region of the central rectangular portion 8 in the vicinity of the bridge-shaped connecting portion 9a is made thicker than the plate thickness of the middle frame-shaped portion 13 which is not close to the bridge-shaped connecting portion 9a.

The gimbal spring 20 configured as described above
Indicates that the steel properties of the bridge-shaped connecting portion 9a, the central rectangular portion 8 and the middle frame-shaped portion 13c adjacent to the bridge-shaped connecting portion 9a are increased, and the stress generated in the connecting portion between the bridge-shaped connecting portion 9a and the central rectangular portion 8 is increased. Also, it is possible to relieve the stress generated in the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c. Moreover, since the width of the middle frame-shaped portion 13 is not changed, it is possible to suppress an increase in the steel property of the spring element.

As described above, according to the twenty-third embodiment, since the gimbal spring 20 is miniaturized, interference with the SPW or the like is prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, the thickness of the bridge-like connecting portion 9a, the bridge-like connecting portion 9a
Since the central square portion 8 and the middle frame-shaped portion 13c adjacent to a are formed to have a large plate thickness, the bridge-shaped connecting portion 9a and the middle frame-shaped portion 1 are formed.
It is possible to relieve the stress generated in the respective connecting portions of 3c and the central rectangular portion 8, and to improve the impact resistance without increasing the steel property of the spring element.

Example 24. 24 (a) and 24 (b) are respectively a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 7 of the present invention. In the twenty-third embodiment, the gimbal spring 2
The inner frame-shaped portion 13 constituting 0 is the inner frame-shaped portion 13a on the SPW side.
And the plate thickness of the bridge-shaped connecting portion 11a and the plate thickness of the region of the middle frame-shaped portion 13 on the recording medium downstream side close to the bridge-shaped connecting portion 11a are close to the bridge-like connecting portion 11a. The thickness is made thicker than the plate thickness of the middle frame-shaped portion 13 in the non-use region.

Gimbal spring 20 according to the twenty-fourth embodiment.
Is the stress generated in the connecting portion between the bridge-shaped connecting portion 11a and the middle frame-shaped portion 13 due to the increase in the steel property of the area of the bridge-shaped connecting portion 11a and the middle frame-shaped portion 13 near the bridge-shaped connecting portion 11a. Can be relaxed and the width of the middle frame-shaped portion 13 is not changed, so that it is possible to suppress the increase in the steel property of the spring element, and the above-mentioned Example 23 is used.
Has the same effect as.

Example 25. 25A and 25B are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head support device showing another embodiment according to claim 7 of the present invention. In the twenty-fifth embodiment, the gimbal spring 2
The inner frame-shaped portion 13 constituting 0 is replaced with the inner frame-shaped portion 13 on the SPW side.
The length of a is shortened, and the plate thickness of the bridge-shaped connecting portion 9 is made thicker than the plate thickness of the middle frame-shaped portion 13, and the same effect as that of the 23rd embodiment is achieved.

Example 26. 26 (a) and 26 (b) are respectively a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head support device showing an embodiment according to claim 8 of the present invention. Gimbal spring 20 according to the twenty-sixth embodiment
Is formed by connecting the central rectangular portion 8 with the middle frame-shaped portion 13 surrounding it and the bridge-shaped connecting portion 9, and the middle frame-shaped portion 13 is further formed in the direction perpendicular to the outer holding portion 12 surrounding this and the bridge-shaped connecting portion 9. The bridge-shaped connecting portions 11 are connected to each other. Here, the middle frame-shaped portion 13 shortens the length of the middle frame-shaped portion 13a on the SPW side among the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction, and at the same time, runs in the recording medium running direction. The viscoelastic member 15 is formed by coating on the bridge-like connecting portion 9a on the SPW side orthogonal to the center frame portion 13c and the central rectangular portion 8 near the bridge-like connecting portion 9a.

The gimbal spring 20 having the above structure
Is a bridge-shaped connecting portion 9a on which the viscoelastic member 15 is applied and formed.
And the steel property of the portion of the middle frame-shaped portion 13c is increased, the stress generated in the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed, and the plate thickness of the middle frame-shaped portion 13 can be further reduced. Since it does not change, it is possible to suppress the increase in steel property of the spring element. Moreover, the vibration of the gimbal spring 20 can be suppressed by the damping effect of the viscoelastic member 15.

As described above, according to the twenty-sixth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPW or the like can be prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, since the viscoelastic member 15 is applied and formed on the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13C in the vicinity thereof, the stress generated at the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed. The impact resistance can be improved without increasing the steel property of the spring element. Furthermore, the viscoelastic member 15 can suppress the vibration of the gimbal spring 20, and stable recording / reproducing can be performed.

Example 27. 27 (a) and 27 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 8 of the present invention. In the twenty-sixth embodiment, the gimbal spring 2
The inner frame-shaped portion 13 constituting 0 is replaced with the inner frame-shaped portion 13 on the SPW side.
While the length of a is shortened, the viscoelastic member 15 is applied to the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c and the central rectangular portion 8 near the bridge-shaped connecting portion 9a. In the twenty-seventh embodiment, the length of the inner frame-shaped portion 13a on the SPW side is shortened, and the bridge-shaped connecting portion 11 and the intermediate frame-shaped portion 13 and the outer holding portion 12 near the bridge-shaped connecting portion 11 are provided.
Further, the viscoelastic member 15 is applied and formed, and the same effect is obtained.

Example 28. 28A and 28B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 8 of the present invention. The circuit board is the object of interference. In the twenty-eighth embodiment, the length of the inner frame-shaped portion 14c of the SPW side of the inner frame-shaped portion 14 that constitutes the gimbal spring 20 is shortened, and the bridge-shaped connecting portion 11 on the recording medium downstream side and the bridge-shaped connecting portion 11 are formed. The viscoelastic member 15 is applied and formed on the middle frame-shaped portion 14a near the connecting portion 11 and the outer holding portion 12, and the same effect as that of the 26th embodiment is obtained.

Example 29. 29A and 29B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head support device showing another embodiment according to claim 8 of the present invention. In the twenty-sixth embodiment, the gimbal spring 2
The inner frame-shaped portion 13 constituting 0 is replaced with the inner frame-shaped portion 13 on the SPW side.
While the length of a is shortened, the viscoelastic member 15 is applied to the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c and the central rectangular portion 8 near the bridge-shaped connecting portion 9a. In Example 29, the length of the inner frame-shaped portion 13a on the SPW side is shortened, and the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c and the central rectangular portion 8 near the bridge-shaped connecting portion 9a are formed.
Further, the viscoelastic member 15b is applied and formed, and the viscoelastic member 15a is applied and formed thinner on the middle frame-shaped portion 13 other than the vicinity of the bridge-shaped connecting portion 9a, which is similar to the viscoelastic member 15b.

[0085]

Since the present invention is constructed as described above, it has the following effects.

A magnetic head supporting device according to a first aspect of the present invention comprises a gimbal spring for mounting the magnetic head and a supporting member for supporting the gimbal spring, and the gimbal spring has a central rectangular portion for fixing the magnetic head, A middle frame-shaped portion provided outside the central square portion, an outer holding portion provided outside the middle frame-shaped portion and supported by a supporting member, and a pair of opposing sides of the central square portion are respectively formed into the middle frame-shaped portion. A pair of narrow first connecting portions to be connected to each other, and a pair of narrow first connecting portions to connect the pair of opposite sides of the middle frame-shaped portion to the outer holding portions in a direction perpendicular to the connecting direction of the pair of first connecting portions. A magnetic head supporting device having a second connecting portion, wherein at least a pair of opposing sides of the middle frame-shaped portion is connected to the side.
One side of the connecting portion is formed shorter than the other side, and the width of the side of the middle frame-shaped portion formed shorter is narrower than that of the side formed longer. As a result, interference with SPW, circuit board, etc., which occurs when miniaturizing and thinning, is eliminated, it can be mounted on a compact and thin recording device, and the asymmetry tendency of the spring element due to miniaturization and thinning is reduced. ,
The deviation of the center of rotation can be suppressed, and the increase in spring constant can also be suppressed, so that a compact and thin magnetic head support system can be easily designed.

Further, in the magnetic head supporting apparatus according to the second aspect of the present invention, at least a pair of opposing sides of the middle frame-shaped portion are connected to one side of the first or second coupling portion. The side of the middle frame-shaped part is shorter than the side of the middle frame-shaped part. It is possible to suppress the increase in the steel property as a spring element due to the decrease in the steel property of the side formed to have a small thickness and the decrease in the portion of the short frame-shaped portion that acts as a spring. The asymmetry tendency is reduced, the shift of the center of rotation can be suppressed, and the increase of the spring constant can also be suppressed, so that a compact and thin magnetic head support system can be easily designed.

According to a third aspect of the magnetic head supporting apparatus of the present invention, at least a pair of opposing sides of the middle frame-shaped portion are connected to the sides at one side of the first or second coupling portion. The width of the first or second connecting portion that is formed shorter than the other side and that is connected to the shorter formed side of the middle frame-shaped portion is the first or the first connected to the longer formed side. Since it is formed narrower than the width of the two connecting portions, the steel property of the first or second connecting portion formed to be narrower is reduced, and the portion of the short formed middle frame-shaped portion that acts as a spring is reduced. It is possible to suppress the increase in steel property as a spring element, reduce the asymmetry tendency of the spring element, suppress the deviation of the rotation center, and suppress the increase of the spring constant.・ It is possible to easily design a thin magnetic head support system. Kill.

According to a fourth aspect of the present invention, in the magnetic head supporting device, at least a pair of opposing sides of the middle frame-shaped portion is connected to one side of the first or second coupling portion. Since the viscoelastic member is formed on at least a part of the long side of the middle frame-shaped portion while being formed shorter than the side of the Rise, and the proportion of the shortened middle frame-shaped portion that acts as a spring is reduced, which is balanced by the increase in steelness as a spring element, the asymmetry tendency of the spring element is reduced, and the deviation of the rotation center is suppressed. Therefore, a compact and thin magnetic head support system can be easily designed.

Further, in the magnetic head supporting device according to the fifth aspect of the present invention, the width of at least one side of the middle frame-shaped portion is
Since it is formed wide in a region close to the first or second connecting part connected to one side thereof and narrow in a region not close to the first or second connecting part, it is close to the first or second connecting part. The steel property of the spring element in the region of the wide middle frame-shaped portion is increased, the stress concentrated in the region of the middle frame-shaped part can be relaxed, the impact resistance can be improved, and the first or second The steel property of the spring element in the region of the narrow inner frame portion that is not close to the connecting portion is reduced, and the change in the steel property of the spring element as a whole can be suppressed.

Further, in the magnetic head supporting apparatus according to the sixth aspect of the present invention, the second connecting portion is formed parallel to the running direction of the recording medium, and the width of the second connecting portion is equal to that of the first connecting portion. Since it is formed wider than the width, the steel property at the second connecting portion is increased, the stress concentrated on the second connecting portion can be relaxed, and the impact resistance can be improved.

Further, in the magnetic head supporting apparatus according to the seventh aspect of the present invention, at least one of the first connecting portion and the second connecting portion is an area in which the first and second connecting portions of the middle frame-shaped portion are not close to each other. Since it is formed thicker than the plate thickness of the above, the steel properties of the first and second connecting portions formed with the plate thickness are increased, and the stress concentrated in the region can be relieved and the impact resistance is improved. it can.

Further, in the magnetic head supporting apparatus according to the eighth aspect of the present invention, since the viscoelastic member is arranged at least in either the first connecting portion or the second connecting portion, the viscoelastic member is arranged. The steel property of the provided first and second connecting parts is increased, the stress concentrated in the region can be relaxed, the shock resistance can be improved, and the vibration of the magnetic head support system can be suppressed, and the stability can be further improved. Recording and playback is possible.

[Brief description of drawings]

FIG. 1 is a plan view of a gimbal spring in a magnetic head support device showing a first embodiment of the present invention.

FIG. 2 is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 2 of the present invention.

FIG. 3 is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 3 of the invention.

FIG. 4 is a plan view of a gimbal spring in a magnetic head support device showing a fourth embodiment of the present invention.

FIG. 5 is a plan view of a gimbal spring in a magnetic head supporting device showing a fifth embodiment of the present invention.

6A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 6 of the invention, and FIG. 6B is a sectional view taken along line VIb-VIb of FIG. 6A.

7A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 7 of the invention, and FIG. 7B is a sectional view taken along line VIIb-VIIb in FIG. 7A.

FIG. 8A is a plan view of a gimbal spring in a magnetic head supporting device showing an eighth embodiment of the present invention, and FIG. 8B is a sectional view taken along line VIIIb-VIIIb of FIG.

9A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 9 of the invention, and FIG. 9B is a sectional view taken along line IXb-IXb in FIG. 9A.

FIG. 10 is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 10 of the invention.

FIG. 11 is a plan view of a gimbal spring in a magnetic head support device showing an eleventh embodiment of the present invention.

FIG. 12A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 12 of the invention, and FIG. 12B is a sectional view taken along line XIIb-XIIb of FIG.

13A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 13 of the invention, and FIG. 13B is a sectional view taken along line XIIIb-XIIIb in FIG. 13A.

14A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 14 of the invention, and FIG. 14B is a sectional view taken along line XIVb-XIVb in FIG. 14A.

15A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 15 of the invention, and FIG. 15B is a sectional view taken along line XVb-XVb of FIG. 15A.

16A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 16 of the invention, and FIG. 16B is a sectional view taken along line XVIb-XVIb of FIG. 16A.

FIG. 17 is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 17 of the invention.

FIG. 18 is a plan view of a gimbal spring in a magnetic head support device showing an eighteenth embodiment of the invention.

FIG. 19 is a plan view of a gimbal spring in a magnetic head supporting device showing Embodiment 19 of the present invention.

FIG. 20 is a plan view of a gimbal spring in a magnetic head supporting device showing Embodiment 20 of the present invention.

FIG. 21 is a plan view of a gimbal spring in a magnetic head supporting device showing Embodiment 21 of the present invention.

FIG. 22 is a plan view of a gimbal spring in a magnetic head supporting device showing Embodiment 22 of the present invention.

23A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 23 of the invention, and FIG. 23B is a sectional view taken along line XXIIIb-XXIIIb of FIG.

24A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 24 of the invention, and FIG. 24B is a sectional view taken along line XXIVb-XXIVb of FIG.

25A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 25 of the invention, and FIG. 25B is a sectional view taken along line XXVb-XXVb of FIG. 25A.

26A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 26 of the invention, and FIG. 26B is a sectional view taken along line XXVIb-XXVIb of FIG.

27A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 27 of the invention, and FIG. 27B is a sectional view taken along line XXVIIb-XXVIIb of FIG. 27A.

28A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 28 of the invention, and FIG. 28B is a sectional view taken along line XXVIIIb-XXVIIIb in FIG. 28A.

29A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 29 of the invention, and FIG. 29B is a sectional view taken along line XXIXb-XXIXb of FIG.

FIG. 30 is a side view showing an example of a conventional magnetic head supporting device.

FIG. 31 is a plan view showing an example of a conventional gimbal spring.

FIG. 32 is a plan view showing another example of a conventional gimbal spring.

FIG. 33 is a plan view showing another example of a conventional gimbal spring.

FIG. 34 is a plan view showing another example of a conventional gimbal spring.

FIG. 35 is a perspective view showing another example of a conventional gimbal spring.

36 is a cross-sectional view taken along the line XXXVI-XXXVI of FIG. 35.

[Explanation of symbols]

 1 Upper Carrier (Supporting Member) 2 Lower Carrier (Supporting Member) 6 Magnetic Head 7 Recording Medium 8 Central Square Part 9 Bridge-shaped Connection Part (First Connection Part) 11 Bridge-shaped Connection Part (Second Connection Part) 12 Outer Retaining Part 13 Middle frame-shaped part 14 Middle frame-shaped part 15 Viscoelastic member 20 Gimbal spring

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[Procedure amendment]

[Submission date] October 26, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Magnetic head support device

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head supporting device for recording / reproducing information on / from a recording medium, and more particularly to a gimbal spring structure of the magnetic head supporting device.

[0002]

2. Description of the Related Art FIG. 30 is a side view showing an example of a conventional magnetic head supporting device. In the figure, 1 and 2 are an upper carrier and a lower carrier as supporting members for a recording medium 7, respectively. A gimbal spring 5 to which a magnetic head 6 is attached is attached to each tip of the carrier 1 and the lower carrier 2. Although not shown, a pivot that is in pressure contact with the gimbal spring 5 projects from the upper carrier 1 and the lower carrier 2 at the center of the back surface of the gimbal spring 5, and the magnetic head 6 is not displaced by this pivot. Thus, the back face center of the magnetic head 6 is supported via the gimbal spring 5. The upper carrier 1 is attached to the lower carrier 2 by a spring 3, and the magnetic head 6 can be rotated up and down with this as a fulcrum. Reference numeral 4 denotes a spring member. The spring member 4 presses the upper carrier 1 toward the lower carrier 2, and the magnetic heads 6 are applied to both surfaces of a recording medium 7 such as a magnetic disk.
Are in contact with each other.

The gimbal spring 5 is formed by punching or etching a thin plate of spring material.
As shown in FIG. 1, the central rectangular portion 8 is continuous with the inner frame-shaped portion 10 surrounding it and the bridge-shaped connecting portion 9 as the first connecting portion, and the inner frame-shaped portion 10 further connects with the outer holding portion 12 surrounding it. The bridge-shaped connecting portions 11 as two connecting portions are connected. At the center of the gimbal spring 5, the magnetic head 6
Are arranged. Here, the bridge-shaped connecting portion 11 is formed in a direction perpendicular to the bridge-shaped connecting portion 9.

The central rectangular portion 8 of the gimbal spring 5 in the above-described conventional magnetic head supporting device constructed as described above is
A rotary motion about the axis of rotation XX, a rolling motion about the axis of rotation Y-Y, ie a pitching motion, and a translational motion perpendicular to the drawing are possible. In addition, in FIG. 31,
The central square portion 8 has a degree of freedom in the recording medium circumferential direction with respect to the middle frame portion 10, and the middle frame portion 10 has a degree of freedom in the recording medium radial direction with respect to the outer holding portion 12. However, these can be interchanged with each other.

However, when developing a compact and thin recording apparatus, interference with various mechanisms such as a spindle motor (hereinafter referred to as SPM) for driving a recording medium, a drive mechanism for driving a carrier, and a circuit board occurs. However, in order to eliminate this interference, it is necessary to reduce the size of the magnetic head supporting device on the interfering side, and there is a problem that the size of the conventional magnetic head supporting device cannot eliminate the interference.

FIG. 32 is a plan view showing another example of the gimbal spring in the conventional magnetic head supporting device. The gimbal spring 5 has the XX axis (and YY shown in FIG. 31).
The shape of the gimbal spring 5 that is symmetric with respect to the (axis) is made asymmetric with respect to the XX axis by shortening the upper portion of the middle frame-shaped portion 10 in the drawing.

The gimbal spring 5 thus constructed has
Although the magnetic head supporting device is made smaller and thinner to eliminate the above interference, the spring constant of the spring element of the middle frame-shaped portion 10 which is shortened in the upper part of the drawing increases, so that the magnetic force in the rolling direction is increased. The center of rotation will be displaced to a position above the XX axis in the figure.

FIG. 33 shows, for example, Japanese Patent Laid-Open No. 62-264475.
32 is a plan view showing another example of the gimbal spring in the conventional magnetic head supporting device described in Japanese Patent Publication No. JP-A-2003-138, which is similar to the gimbal spring 5 shown in FIG.
The widths W ₁ and W ₂ of the portion of the middle frame-shaped portion 10 that forms a side parallel to the recording medium running direction in the direction perpendicular to the running direction are smaller on the upstream side W ₁ than on the downstream side W _2. It is supposed to do.

The gimbal spring 5 thus constructed has
The rigidity of the central rectangular portion 8 decreases on the upstream side and increases on the downstream side, and the overall rigidity does not change, and the inclination of the magnetic head 6 during recording / reproduction is prevented by the rigidity on the downstream side. The contact state between 6 and the recording medium 7 can be stabilized. However, if the gimbal spring 5 shown in FIG. 32 is made smaller and thinner in the same manner as the gimbal spring 5, the length of the middle frame-shaped portion 10 is different between front and rear or left and right, and similarly, the rotation center position cannot be held and the spring is not held. The constant increases, stable recording and reproduction cannot be performed, and the risk of scratching the recording medium 7 also increases.

FIG. 34 shows, for example, Shoukai 62-171042.
FIG. 9 is a plan view showing another example of the gimbal spring in the conventional magnetic head supporting device described in Japanese Patent Laid-Open Publication No. 2004-242242, in which the gimbal spring 5 includes a central rectangular portion 8 including a bridge-shaped connecting portion 9 and an outer frame-shaped portion 10. A viscoelastic member 15 such as silicon is applied between the two.

The gimbal spring 5 thus constructed has
Although the viscoelastic member 15 acts to suppress the vibration of the magnetic head 6 and stable recording / reproducing can be performed, the viscoelastic member 15 is formed in the groove between the central rectangular portion 8 and the outer frame-shaped portion 12. Since it is passed, the spring constant of the gimbal spring 5 increases, and the risk of causing scratches on the recording medium 7 increases.

FIG. 35 shows, for example, Shoukai 60-192174.
FIG. 36 is a perspective view showing another example of the gimbal spring in the conventional magnetic head supporting device described in Japanese Patent Publication No. JP-A-2003-242242.
FIG. 6 is a cross-sectional view taken along the line XXXVI-XXXVI, in which the gimbal spring 5 is configured such that the plate thickness of the middle frame-shaped portion 10 is thicker than that of the bridge-shaped connecting portions 9 and 11.

The gimbal spring 5 thus constructed has
Although the stress can be relaxed in the middle frame-shaped portion 10, stress relaxation is not performed in the vicinity of the bridge-shaped connecting portions 9 and 11 where dangerous stress occurs, and the rigidity of the middle frame-shaped portion 10 increases. To
The spring constant increases, stable recording / reproducing cannot be performed, and the risk of scratching the recording medium 7 increases.

[0014]

Since the conventional magnetic head supporting device is constructed as described above, when it is mounted on a small and thin recording / reproducing device, the gimbal spring 5 can be downsized, and SPM, various types can be used. Although the interference with the device, the circuit board and the like is eliminated, there is a problem that the device performance is deteriorated as described below with the downsizing of the gimbal spring 5.

To reduce the size of the gimbal spring 5, as in the gimbal spring 5 shown in FIG. 32, when one side of the middle frame-shaped portion 10 orthogonal to the traveling direction of the recording medium 7 is shortened, it is shortened. The spring constant of the spring element on the closed side increases, the center of rotation moves from the conventional design position, and stable recording / reproduction cannot be performed.

If both sides of the side of the middle frame-shaped portion 10 orthogonal to the running direction of the recording medium 7 are shortened, the rotation center position deviation can be prevented, but the rotation and translation spring constants of the gimbal spring 5 can be prevented. Increases with respect to the spring constant of the conventional design value, the variation in the initial posture of the magnetic head 6 cannot be absorbed, and the waviness of the recording medium 7 cannot be tracked.
The durability of the recording medium deteriorates.

Furthermore, since the compact and thin recording / reproducing apparatus has an advantage of being incorporated in a portable computer, it is necessary to have a shock resistance higher than the conventional shock resistance, and a high load is applied to the gimbal spring 5. It has become necessary that no plastic deformation occurs even if it acts. However, FIGS.
The conventional structure of the gimbal spring 5 shown in FIG. 2 has a limit in impact resistance, and cannot be mounted in a recording / reproducing device corresponding to a portable type with the structure as it is. Further, when the spring constant of the gimbal spring 5 which is smaller and thinner and equivalent arrangements of the conventional spring constant, it is necessary to reduce the rigidity of the middle frame-shaped portion 10 and the bridging connecting portion 11, simply lowering the rigidity What is to be done is a connecting portion between the central square portion 8 and the bridge-like connecting portion 9, which is a fulcrum of each portion when a force such as bending is applied, and a connecting portion between the middle frame-like portion 10 and the bridge-like connecting portions 9 and 11. , And increase in concentrated stress generated in the connecting portion between the outer holding portion 12 and the bridge-like connecting portion 11,
This is contrary to the improvement in impact resistance.

The present invention has been made to solve the above problems, and when mounted on a compact and thin recording / reproducing apparatus, the deviation of the rotation center due to the miniaturization and thinning is reduced, and the spring constant is reduced. It is an object of the present invention to obtain a magnetic head supporting device capable of suppressing the fluctuation of the magnetic field and satisfying the shock resistance.

[0019]

A magnetic head supporting device according to claim 1 of the present invention comprises a gimbal spring for mounting a magnetic head and a supporting member for supporting the gimbal spring, and the gimbal spring fixes the magnetic head. A central square portion, an inner frame-shaped portion provided outside the central square portion, an outer holding portion provided outside the intermediate frame-shaped portion and supported by a supporting member, and a pair of opposite sides of the central square portion. A pair of narrow first connecting portions that are respectively connected to the middle frame-shaped portion, and a pair of opposite sides of the middle frame-shaped portion that are perpendicular to the connecting direction of the pair of first connecting portions are connected to the outer holding portions, respectively. And a pair of second connecting portions having a narrow width, wherein at least one pair of opposing sides of the middle frame-shaped portion is connected to the one side of the first or second connecting portion. Is formed shorter than the other side, Short formed sides of the width of the frame-shaped portion is one that is narrower with respect to long-formed sides of the width.

Further, in the magnetic head supporting device according to the second aspect of the present invention, at least a pair of facing sides of the middle frame-shaped portion are connected to one side of the first or second connecting portion. The thickness of the middle frame portion is shorter than that of the side, and the thickness of the side of the middle frame-shaped portion that is shortened is smaller than that of the side that is long.

Further, in the magnetic head supporting device according to the third aspect of the present invention, at least a pair of opposing sides of the middle frame-shaped portion are connected to the sides at one side of the first or second coupling portion. The width of the first or second connecting portion that is formed shorter than the other side and that is connected to the shorter formed side of the middle frame-shaped portion is the first or the first connected to the longer formed side. The width is narrower than the width of the two connecting portions.

Further, in the magnetic head supporting apparatus according to the fourth aspect of the present invention, at least a pair of opposing sides of the middle frame-shaped portion are connected to one side of the first or second coupling portion. It is formed to be shorter than the side of, and the viscoelastic member is disposed on at least a part of the side of the middle frame-shaped portion formed longer.

Further, in the magnetic head supporting device according to the fifth aspect of the present invention, the width of at least one side of the middle frame-shaped portion is
It is formed to be wide in a region close to the first or second connecting portion connected to one of the sides and narrow in a region not close to the first or second connecting portion.

Further, in the magnetic head supporting device according to the sixth aspect of the present invention, the second connecting portion is formed parallel to the running direction of the recording medium, and the width of the second connecting portion is equal to that of the first connecting portion. It is formed wider than the width.

Further, in the magnetic head supporting apparatus according to the seventh aspect of the present invention, an area in which at least one of the first connecting portion and the second connecting portion is not close to the first and second connecting portions of the middle frame-shaped portion. It is formed thicker than the plate thickness.

Further, in the magnetic head supporting apparatus according to the eighth aspect of the present invention, the viscoelastic member is arranged at least at either the first connecting portion or the second connecting portion.

[0027]

In the magnetic head support device according to the first aspect of the present invention, at least a pair of opposing sides of the middle frame-shaped portion is connected to one side of the first or second coupling portion and the other side is connected to the other side. Since it is formed shorter than the side, it eliminates interference with the SPM , circuit board, etc., and occurs during miniaturization and thinning.
Interference with the SPM , circuit board, etc. is eliminated. In addition, since the width of the side of the middle frame-shaped portion on which the shorter side is formed is narrower than the width of the side of the longer formed side, the width of the middle frame-shaped portion formed on the shorter side is narrower. The rigidity of the edge is reduced, and the increase in rigidity of the spring element due to the reduction of the portion of the short frame-shaped portion that acts as a spring can be suppressed, and the asymmetry tendency of the spring element is reduced. It is possible to suppress the deviation of the center of rotation and further suppress the increase of the spring constant.

Further, in the magnetic head supporting device according to the second aspect of the present invention, the plate thickness on the side where the middle frame portion is formed short is formed thinner than the plate thickness on the side where it is formed longer. Therefore, the rigidity of the side where the plate thickness of the middle frame-shaped portion is thin is reduced, and the rigidity of the spring element as a part of the short middle frame-shaped portion that acts as a spring is reduced. Can be suppressed, the asymmetry tendency of the spring element can be reduced, the deviation of the rotation center can be suppressed, and the increase of the spring constant can also be suppressed.

Further, in the magnetic head supporting apparatus according to the third aspect of the present invention, the width of the first or second connecting portion connected to the shorter side of the middle frame-shaped portion is longer. Since it is formed narrower than the width of the first or second connecting portion that is connected to the first or second connecting portion, the rigidity of the first or second connecting portion that is formed narrow is reduced, and the rigidity of the short middle frame-shaped portion is reduced. It is possible to suppress the increase in rigidity of the spring element due to the decrease in the portion acting as a spring, reduce the asymmetry tendency of the spring element, suppress the deviation of the rotation center, and further increase the spring constant. Can be suppressed.

Further, in the magnetic head supporting apparatus according to the fourth aspect of the present invention, since the viscoelastic member is disposed on at least a part of the long side of the middle frame-shaped portion, it is formed long. increases the rigidity of the frame-shaped portion in the side, balance and increase the stiffness of the spring element with that portion acts decreases as the spring of the frame-like portion in which is formed shorter, asymmetrical tendency of the spring elements is reduced, The deviation of the rotation center can be suppressed.

Further, in the magnetic head supporting apparatus according to the fifth aspect of the present invention, the width of at least one side of the middle frame-shaped portion is close to the first or second connecting portion connected to the one side. The first or second connecting portion is wide, and the first or second connecting portion is not formed close to the first connecting portion.
The rigidity of the spring element in the region of the wide middle frame-shaped portion adjacent to the connecting portion is increased, the stress concentrated in the region of the middle frame-shaped portion can be relaxed, and the impact resistance can be improved. Alternatively, the rigidity of the spring element is reduced in the region of the narrow inner frame portion that is not close to the second connecting portion, and the change in rigidity of the spring element as a whole can be suppressed.

Further, in the magnetic head supporting apparatus according to the sixth aspect of the present invention, the second connecting portion is formed parallel to the running direction of the recording medium, and the width of the second connecting portion is equal to the first connecting portion. Since it is formed wider than the width, the rigidity of the second connecting portion is increased, the stress concentrated on the second connecting portion can be relaxed, and the impact resistance can be improved.

Further, in the magnetic head supporting apparatus according to the seventh aspect of the present invention, at least one of the first connecting portion and the second connecting portion does not come close to the first and second connecting portions of the middle frame-shaped portion. because it is thicker the plate thickness of the region, the first and second connecting portions which thickness is formed thicker rigid
As a result, the stress can be relaxed, the stress concentrated in the region can be relaxed, and the impact resistance can be improved.

Further, in the magnetic head supporting apparatus according to the eighth aspect of the present invention, since the viscoelastic member is disposed in at least one of the first connecting portion and the second connecting portion, the viscoelastic member is Tsuyoshi of the first and second connecting portions disposed
As a result, the stress concentrated in the region can be relaxed and the impact resistance can be improved.

[0035]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. FIG. 1 is a plan view of a gimbal spring in a magnetic head supporting apparatus showing an embodiment according to claim 1 of the present invention. In the figure, the same or corresponding parts as those of the conventional gimbal spring shown in FIGS. The same code is attached,
The description is omitted.

The gimbal spring 20 according to the first embodiment is
The central rectangular portion 8 is continuous with the middle frame-shaped portion 13 surrounding it and the bridge-shaped connecting portion 9, and the middle frame-shaped portion 13 is further formed in the direction perpendicular to the outer holding portion 12 surrounding this and the bridge-shaped connecting portion 9. The bridge-shaped connecting portions 11 are continuously arranged. here,
In the middle frame-shaped portion 13 of the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction, the length of the SPM- side middle frame-shaped portion 13a is shortened and the middle frame-shaped portion 13a is formed.
The width W _13a narrower than the width W _13b of the frame-shaped portion 13b in the opposite side of the further frame portion 13c in constituting the sides parallel to the recording medium conveying direction, at 13d, frame-like in the SPM side The width W _{13c of the} portion 13c is narrower than the width W _13d of the inner frame portion 13d on the opposite side.

Assuming that the spring element of the middle frame-shaped portion 13 is a cantilever having a rectangular cross section, it has rigidity k shown in (Equation 1) for bending. Where W is the load at the beam tip, x is the displacement at the beam tip, E is the longitudinal elastic modulus, L is the beam length, and b is the beam.
Of width, h is the thickness of the beam.

[0038]

[Equation 1]

From the above (formula 1), the middle frame-shaped portion 1 on the SPM side
When the length of 3a is reduced, the rigidity of the spring element on the SPM side increases, but since the middle frame-shaped portions 13a and 13c on the SPM side are formed narrower, the rigidity of the spring element increases. Therefore, the rotation center can be brought close to the conventional design position without significantly changing the spring constant of the gimbal spring 20.

As described above, according to the first embodiment, since the gimbal spring 20 is miniaturized, interference with the SPM or the like can be prevented, and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, since the displacement of the rotation center position and the variation of the spring constant of the gimbal spring 20 due to the miniaturization of the gimbal spring 20 are suppressed, the rotation center position and the gimbal spring 20 which have been conventionally designed even when the size and thickness are reduced. A new magnetic head support system that is small and thin can be easily designed by using the spring constant, stable recording and reproduction can be performed, and the recording medium 7 is not scratched.

Example 2. FIG. 2 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 1 of the present invention. In the first embodiment described above, the shape of the inner frame-shaped portion 13 that constitutes the gimbal spring 20 is set such that the length of the inner frame-shaped portion 13a on the SPM side is shortened and the inner frame-shaped portion 13 is formed.
The width W _{13a of a} is narrower than the width W _13b of the inner frame portion 13b on the opposite side, and the width W _13c of the inner frame portion 13c on the SPM side is set to the width W _{13d of the} inner frame portion 13d on the opposite side. However, in the second embodiment, the length of the middle frame-shaped portion 13a is shortened, and the width W _13c of the middle frame-shaped portion 13c is set to be smaller than the width of the opposite middle frame-shaped portion 13d. It should be narrower than W _13d ,
Has the same effect.

Example 3. FIG. 3 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 1 of the present invention. In the first embodiment described above, the shape of the inner frame-shaped portion 13 that constitutes the gimbal spring 20 is set such that the length of the inner frame-shaped portion 13a on the SPM side is shortened and the inner frame-shaped portion 13 is formed.
The width W _{13a of a} is narrower than the width W _13b of the inner frame portion 13b on the opposite side, and the width W _13c of the inner frame portion 13c on the SPM side is set to the width W _{13d of the} inner frame portion 13d on the opposite side. However, in the third embodiment, the length of the middle frame-shaped portion 13a is shortened, and the width W _13a of the middle frame-shaped portion 13a is set to be smaller than the width of the opposite middle frame-shaped portion 13b. It should be narrower than W _13b ,
Has the same effect.

Example 4. FIG. 4 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 1 of the present invention. In the first embodiment described above, the shape of the inner frame-shaped portion 13 that constitutes the gimbal spring 20 is set such that the length of the inner frame-shaped portion 13a on the SPM side is shortened and the inner frame-shaped portion 13 is formed.
The width W _{13a of a} is narrower than the width W _13b of the inner frame portion 13b on the opposite side, and the width W _13c of the inner frame portion 13c on the SPM side is set to the width W _{13d of the} inner frame portion 13d on the opposite side. However, in the fourth embodiment, the length of the middle frame-shaped portion 13a is shortened and the width of the middle frame-shaped portion 13a is set to the opposite side.
The width is smaller than the width of b, and the width of the middle frame-shaped portion 13c is narrower than the width of the opposite middle frame-shaped portion 13d, and the same effect is obtained.

Example 5. FIG. 5 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to the first aspect of the present invention. In the fifth embodiment, the object of interference is a circuit board. In the fifth embodiment, the shape of the inner frame-shaped portion 14 that constitutes the gimbal spring 20 is such that the length of the inner frame-shaped portion 14c on the downstream side of the recording medium 7 is shortened and the width W _{14c of the} inner frame-shaped portion 14c is _reduced. Is the width W of the opposite middle frame portion 14d
And narrower than the _14d, and shall further narrower than the width W _14b of the frame-shaped portion 14b in the opposite side width W _14a of the frame-shaped portion 14a in the downstream side, the same effect as in Example 1 Play.

Example 6. 6 (a) and 6 (b) are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing an embodiment according to claim 2 of the present invention, respectively. In the gimbal spring 20 according to the sixth embodiment, the central rectangular portion 8 is connected to the inner frame-shaped portion 13 surrounding it by the bridge-shaped connecting portion 9, and the inner frame-shaped portion 13 is further bridged to the outer holding portion 12 surrounding it. A bridge-shaped connecting portion 11 formed in a direction perpendicular to the portion 9 is formed continuously. Here, the middle frame-shaped portion 13 is configured such that, in the middle frame-shaped portions 13a and 13b forming sides orthogonal to the recording medium running direction, the length of the SPM- side middle frame-shaped portion 13a is shortened and The plate thickness of 13a is made smaller than the plate thickness of the inner frame portion 13b on the opposite side, and further, in the inner frame portions 13c and 13d forming sides parallel to the recording medium running direction, the SPM side inner frame portion is formed. The plate thickness of 13c is made thinner than the plate thickness of the inner frame portion 13d on the opposite side.

From the above (formula 1), the SPM side middle frame-shaped portion 1
When the length of 3a is reduced, the rigidity of the spring element on the SPM side increases, but the plates of the middle frame-shaped portions 13a, 13c on the SPM side are increased.
Since the thickness is formed thin, the increase in rigidity of the spring element is suppressed, and the rotation center can be brought close to the conventional design position without greatly changing the spring constant of the gimbal spring 20.

As described above, according to the sixth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPM or the like can be prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, since the shift of the rotational center position due to the miniaturization of the gimbal spring 20 is suppressed, stable recording / reproducing can be performed, and the recording medium 7 is not scratched.

Example 7. 7A and 7B are a plan view and a sectional view of a main part of a gimbal spring in a magnetic head support device showing another embodiment according to claim 2 of the present invention. In the sixth embodiment, the shape of the middle frame-shaped portion 13 that constitutes the gimbal spring 20 is changed to the middle frame-shaped portion 13 on the SPM side.
In addition to shortening the length of a, the plate thickness of the middle frame-shaped portion 13a is made smaller than the plate thickness of the opposite middle frame-shaped portion 13b, and further, the SPM side middle frame-shaped portion 13c. The thickness of the opposite side of the middle frame-shaped part 1
Although it is assumed that the thickness is smaller than the plate thickness of 3d, in the seventh embodiment, the length of the SPM- side middle frame-shaped portion 13a is shortened and the plate thickness of the middle frame-shaped portion 13a is set on the opposite side. Shape 1
It is thinner than the plate thickness of 3b, and the inner frame portions 13a, 1
It is assumed that the plate thicknesses of 3c and 13d are equal,
Has the same effect.

Example 8. 8A and 8B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 2 of the present invention. In the sixth embodiment, the shape of the middle frame-shaped portion 13 that constitutes the gimbal spring 20 is changed to the middle frame-shaped portion 13 on the SPM side.
While shortening the length of a, the plate thickness of the middle frame-shaped portion 13a is made smaller than the plate thickness of the opposite middle frame-shaped portion 13b, and S
The thickness of the PM- side middle frame-shaped portion 13c is set to the opposite side middle frame-shaped portion 13d.
However, in the eighth embodiment, the length of the SPM- side middle frame-shaped portion 13a is shortened, and the plate thickness of the SPM- side middle frame-shaped portion 13c is set to the opposite side. The thickness is smaller than the plate thickness of the middle frame-shaped portion 13d, and the middle frame-shaped portion 13
It is assumed that the plate thicknesses of a, 13b, and 13c are equal to each other, and the same effect is obtained.

Example 9. 9A and 9B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 2 of the present invention. The target is a circuit board. In the ninth embodiment, the shape of the inner frame-shaped portion 14 constituting the gimbal spring 20 is set such that the length of the inner frame-shaped portion 14c on the downstream side of the recording medium 7 is shortened and the inner frame-shaped portion 14a on the downstream side is formed. The plate thickness is made smaller than the plate thickness of the middle frame-shaped portion 14b on the upstream side, and the plate thicknesses of the middle frame-shaped portions 14a, 14c, and 14d are made equal, and the same effect as that of the above-described sixth embodiment is obtained. Play.

Example 10. FIG. 10 shows claim 3 of the present invention.
FIG. 6 is a plan view of a gimbal spring in the magnetic head support device showing the embodiment according to the present invention. In the gimbal spring 20 according to the tenth embodiment, the central rectangular portion 8 is connected to the inner frame-shaped portion 13 surrounding it by the bridge-shaped connecting portion 9, and the central frame-shaped portion 13 is further bridged to the outer holding portion 12 surrounding it. A bridge-shaped connecting portion 11 formed in a direction perpendicular to the portion 9 is formed continuously. Here, in the inner frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction, the length of the SPM side inner frame-shaped portion 13a is shortened, and the bridge forming the side orthogonal to the recording medium running direction is formed. Regarding the widths of the bridge-like connecting portions 9a and 9b, the width of the bridge-like connecting portion 9a on the SPM side is made narrower than the width of the bridge-like connecting portion 9b on the opposite side.

From the above (formula 1), the SPM side middle frame-shaped portion 1
When the length of 3a is decreased, the rigidity of the spring element on the SPM side increases, but since the width of the bridge-shaped connecting portion 9a on the SPM side is narrowed, the effectiveness of the middle frame-shaped portion 13c is improved. The spring length is increased, the increase in rigidity of the spring element is suppressed, and the rotation center can be brought close to the conventional design position without significantly changing the spring constant of the gimbal spring 20.

As described above, according to the tenth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPM or the like is prevented and the magnetic head supporting device is miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, since the shift of the rotational center position due to the miniaturization of the gimbal spring 20 is suppressed, stable recording / reproducing can be performed, and the recording medium 7 is not scratched.

Example 11. FIG. 11 shows claim 3 of the present invention.
FIG. 13 is a plan view of a gimbal spring in a magnetic head supporting device according to another embodiment of the present invention. In the eleventh embodiment, the circuit board is the object of interference. In the eleventh embodiment, the shape of the middle frame-shaped portion 14 that constitutes the gimbal spring 20 is set such that the length of the middle frame-shaped portion 14c on the downstream side of the recording medium 7 is shortened and the bridge-shaped connecting portion 11a on the downstream side is formed. The width is made narrower than the width of the bridge-shaped connecting portion 11b on the upstream side, and the same effect as that of the tenth embodiment is obtained.

Example 12 12 (a) and 12 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head supporting device showing an embodiment according to claim 4 of the present invention, respectively. Gimbal spring 20 according to the twelfth embodiment
Is formed by connecting the central rectangular portion 8 to the middle frame-shaped portion 13 surrounding it and the bridge-shaped connecting portion 9, and the middle frame-shaped portion 13 is formed in a direction perpendicular to the outer holding portion 12 surrounding the central rectangular-shaped portion 13 and the bridge-shaped connecting portion 9. The bridge-shaped connecting portions 11 are connected to each other. Here, the middle frame-shaped portion 13 shortens the length of the middle frame-shaped portion 13a on the SPM side among the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction, and the middle frame-shaped portion 13a. 13b
A viscoelastic member 15 such as a silicone resin is applied or adhered to the inner frame-shaped portion 13d which is parallel to the recording medium running direction and opposite to the SPM .

From the above (formula 1), the middle frame-shaped portion 1 on the SPM side
When the length of 3a is reduced, the rigidity of the spring element on the SPM side increases, but the viscoelastic member 1 is added to the middle frame portions 13b and 13d.
5, the thickness of the middle frame-shaped portions 13b and 13d is increased, and the rigidity of the spring element on the side opposite to the SPM side is increased,
The center of rotation can be brought closer to the conventional design position. Further, the vibration effect of the viscoelastic member 15 can suppress the vibration of the gimbal spring 20.

As described above, according to the twelfth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPM or the like can be prevented, and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, the displacement of the rotation center position due to the miniaturization of the gimbal spring 20 is suppressed, and the vibration of the gimbal spring 20 can be suppressed, so that stable recording / reproducing can be performed and the recording medium 7 can be scratched. Absent.

Example 13 13A and 13B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 4 of the present invention, respectively. In the twelfth embodiment, the gimbal spring 2
The shape of the middle frame-shaped portion 13 constituting 0 is such that the length of the middle frame-shaped portion 13a on the SPM side is shortened, and the viscoelastic member 15 is arranged in the middle frame-shaped portion 13b and the middle frame-shaped portion 13d. However, in the thirteenth embodiment, the length of the SPM side inner frame-shaped portion 13a is shortened and the viscoelastic member 15 is provided only in the inner frame-shaped portion 13b, and the same effect is obtained.

Example 14 14 (a) and 14 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 4 of the present invention, respectively. In the twelfth embodiment, the gimbal spring 2
The shape of the middle frame-shaped portion 13 constituting 0 is such that the length of the middle frame-shaped portion 13a on the SPM side is shortened, and the viscoelastic member 15 is arranged in the middle frame-shaped portion 13b and the middle frame-shaped portion 13d. However, in the fourteenth embodiment, the length of the inner frame-shaped portion 13a on the SPM side is shortened and the viscoelastic member 15 is provided only in the inner frame-shaped portion 13d, and the same effect is obtained.

Example 15 15 (a) and 15 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 4 of the present invention, respectively. In the twelfth embodiment, the gimbal spring 2
The shape of the middle frame-shaped portion 13 constituting 0 is such that the length of the middle frame-shaped portion 13a on the SPM side is shortened, and the viscoelastic member 15 is arranged in the middle frame-shaped portion 13b and the middle frame-shaped portion 13d. However, in the fifteenth embodiment, the length of the inner frame-shaped portion 13a on the SPM side is shortened and the inner frame-shaped portions 13a, 1
In comparison with the thickness of the viscoelastic member 15a in FIG.
The viscoelastic member 15 is arranged in the middle frame-shaped portion 13 so as to increase the thickness of the viscoelastic member 15b in b and 13d,
Has the same effect.

Example 16. 16 (a) and 16 (b) are a plan view and a sectional view of a main part of a gimbal spring in a magnetic head supporting apparatus showing another embodiment according to claim 4 of the present invention, respectively. The target is a circuit board. In the sixteenth embodiment, the shape of the middle frame-shaped portion 14 that constitutes the gimbal spring 20 is such that the length of the middle frame-shaped portion 14c on the downstream side of the recording medium 7 is shortened, and the middle frame-shaped portion 14b on the downstream side is formed. The viscoelastic member 15 is provided in 14d, and the same effect as that of the above-described twelfth embodiment is obtained.

Example 17 FIG. 17 shows claim 5 of the present invention.
FIG. 6 is a plan view of a gimbal spring in the magnetic head support device showing the embodiment according to the present invention. In the gimbal spring 20 according to the seventeenth embodiment, the central rectangular portion 8 is connected to the inner frame-shaped portion 13 surrounding it by the bridge-shaped connecting portion 9, and the inner frame-shaped portion 13 is further bridged to the outer holding portion 12 surrounding it. A bridge-shaped connecting portion 11 formed in a direction perpendicular to the portion 9 is formed continuously. Here, the middle frame-shaped portion 13 is the SP of the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction.
While shortening the length of the middle frame-shaped portion 13a on the M side, the width of the middle frame-shaped portion 13c on the SPM side that is parallel to the recording medium running direction is wide in the area close to the bridge-shaped connecting portion 9a and is not close to it. It's narrowed down.

The gimbal spring 20 having the above structure
The rigidity of the wide middle frame-shaped portion 13c region in the vicinity of the bridge-shaped connecting portion 9a is increased, the stress generated at the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed, and the width can be reduced. The rigidity can be reduced in the narrow inner frame portion 13c region, and the increase in rigidity of the spring element can be suppressed.

As described above, according to the seventeenth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPM or the like can be prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, the wide middle frame-shaped portion 1 near the bridge-shaped connecting portion 9a
Since the 3c region is formed, the stress generated in the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed, and the shock resistance can be improved without increasing the rigidity of the spring element, It is possible to easily design a compact and thin magnetic head support system that satisfies impact resistance.

Example 18. FIG. 18 shows claim 5 of the present invention.
FIG. 11 is a plan view of a gimbal spring in a magnetic head support device showing another embodiment according to the present invention. In the seventeenth embodiment, the length of the SPM- side inner frame-shaped portion 13a of the gimbal spring 20 is reduced, and the width of the SPM- side inner frame-shaped portion 13c is changed to the bridge-shaped connection. In the eighteenth embodiment, the area close to the portion 9a is wide and the area not close to the portion is narrow. However, in the eighteenth embodiment, the length of the inner frame-shaped portion 13a on the SPM side is shortened and the inner frame-shaped portions 13a and 13b are formed. Width,
The area is wide in the area close to the bridge-like connecting portion 11 and narrow in the area not close to the bridge-shaped connecting portion 11.

Gimbal spring 20 according to the eighteenth embodiment
Is a wide middle frame-shaped portion 13a, 1 near the bridge-shaped connecting portion 11.
The rigidity of the 3b region is increased, and the stress generated in the connecting portion between the bridge-shaped connecting portion 11 and the middle frame-shaped portions 13a and 13b can be relaxed,
Moreover, the rigidity can be reduced in the narrow inner frame portions 13a and 13b to suppress the increase in the rigidity of the spring element, and the same effect as that of the seventeenth embodiment can be obtained.

Example 19 FIG. 19 shows claim 5 of the present invention.
FIG. 20 is a plan view of a gimbal spring in a magnetic head supporting device showing another embodiment according to the present invention, and in the nineteenth embodiment, the object of interference is a circuit board. In the above Example 19,
In the middle frame-shaped portion 14 that constitutes the gimbal spring 20, the length of the middle frame-shaped portion 14c on the SPM side is shortened, and the width of the middle frame-shaped portion 14a on the downstream side of the recording medium 7 is set to the bridge-shaped connecting portion 11a.
The region similar to the seventeenth embodiment has the same effect as the region close to the first region and the region close to the second region is narrowed.

Example 20. FIG. 20 shows claim 6 of the present invention.
FIG. 6 is a plan view of a gimbal spring in the magnetic head support device showing the embodiment according to the present invention. In the gimbal spring 20 according to Example 20, the central rectangular portion 8 is connected to the inner frame-shaped portion 13 surrounding it by the bridge-shaped connecting portion 9, and the inner frame-shaped portion 13 is further bridged to the outer holding portion 12 surrounding it. A bridge-shaped connecting portion 11 formed in a direction perpendicular to the portion 9 is formed continuously. Here, the middle frame-shaped portion 13 is the SP of the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction.
The length of the middle frame-shaped portion 13a on the M side is shortened, and the width of the bridge-shaped connecting portion 11 parallel to the recording medium running direction is made wider than that of the bridge-shaped connecting portion 9 perpendicular to the recording medium running direction. is doing.

The gimbal spring 20 having the above structure
Indicates that the rigidity of the bridge-shaped connecting portion 11 is increased and the stress generated in the connecting portion between the bridge-shaped connecting portion 11 and the outer holding portion 12 and the stress generated in the connecting portion between the bridge-shaped connecting portion 11 and the middle frame-shaped portion 13 are increased. It is possible to relax, and it is possible to reduce the gap between the upper and lower carriers 1 and 2 and the bridge-shaped connecting portion 11 when the outer holding portion 12 is attached to the upper and lower carriers 1 and 2. Moreover, since the width of the middle frame-shaped portion 13 is not changed, it is possible to suppress the increase in the rigidity of the spring element.

As described above, according to the twentieth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPM or the like can be prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Furthermore, since the width of the bridge-shaped connecting portion 11 is formed to be larger than the width of the bridge-shaped connecting portion 9, the bridge-shaped connecting portion 11 and the middle frame-shaped portion 13 and the outer frame holding portion 12 are connected to each other. The stress can be relaxed, and the impact resistance can be improved without increasing the rigidity of the spring element.

Example 21. FIG. 21 shows claim 6 of the present invention.
FIG. 11 is a plan view of a gimbal spring in a magnetic head support device showing another embodiment according to the present invention. In Example 20, the length of the SPM- side inner frame-shaped portion 13a of the gimbal spring 20 is shortened, and the bridge-shaped connecting portion 1 is used.
Although the width of 1 is made wider than the width of the bridge-shaped connecting portion 9, in this embodiment 21, the bridge-shaped connecting portion 9a on the SPM side is made wider than the bridge-shaped connecting portion 9b on the opposite side. Also, the stress generated at the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13 can be relaxed.

Example 22. FIG. 22 shows claim 6 of the present invention.
FIG. 23 is a plan view of a gimbal spring in a magnetic head supporting device according to another embodiment of the present invention, and in the twenty-second embodiment, the object of interference is a circuit board. In Example 22 above,
In the middle frame-shaped portion 14 constituting the gimbal spring 20, the length of the middle frame-shaped portion 14c on the SPM side is shortened and the width of the bridge-shaped connecting portion 11 is made wider than the width of the bridge-shaped connecting portion 9. Thus, the same effect as that of the 20th embodiment can be obtained.

Example 23. 23 (a) and 23 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head support device showing an embodiment according to claim 7 of the present invention, respectively. Gimbal spring 20 according to Example 23 above
Is formed by connecting the central rectangular portion 8 to the middle frame-shaped portion 13 surrounding it and the bridge-shaped connecting portion 9, and the middle frame-shaped portion 13 is formed in a direction perpendicular to the outer holding portion 12 surrounding the central rectangular-shaped portion 13 and the bridge-shaped connecting portion 9. The bridge-shaped connecting portions 11 are connected to each other. Here, the gimbal spring 20 includes the SPM- side middle frame-shaped portion 13 of the middle frame-shaped portions 13a and 13b orthogonal to the recording medium running direction.
In addition to shortening the length of a, the plate thickness of the bridge-shaped connecting portion 9a perpendicular to the recording medium running direction, and the plate thickness of a region near the bridge-shaped connecting portion 9a of the middle frame-shaped portion 13c horizontal to the recording medium running direction Also, the plate thickness of the region of the central rectangular portion 8 in the vicinity of the bridge-shaped connecting portion 9a is made thicker than the plate thickness of the middle frame-shaped portion 13 which is not close to the bridge-shaped connecting portion 9a.

The gimbal spring 20 configured as described above
Indicates that the rigidity of the bridge-shaped connecting portion 9a, the central rectangular portion 8 and the middle frame-shaped portion 13c near the bridge-shaped connecting portion 9a is increased, and the stress generated in the connecting portion between the bridge-shaped connecting portion 9a and the central rectangular portion 8 is The stress generated at the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed. Moreover, since the plate thickness of the entire middle frame-shaped portion 13 is not changed, it is possible to suppress the increase in the rigidity of the spring element.

As described above, according to the twenty-third embodiment, since the gimbal spring 20 is miniaturized, interference with the SPM or the like can be prevented and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, the thickness of the bridge-like connecting portion 9a, the bridge-like connecting portion 9a
Since the central square portion 8 and the middle frame-shaped portion 13c adjacent to a are formed to have a large plate thickness, the bridge-shaped connecting portion 9a and the middle frame-shaped portion 1 are formed.
It is possible to relieve the stress generated in the respective connecting portions with 3c and the central rectangular portion 8, and it is possible to improve the impact resistance without increasing the rigidity of the spring element.

Example 24. 24 (a) and 24 (b) are respectively a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 7 of the present invention. In the twenty-fourth embodiment, the gimbal spring 2
The inner frame-shaped portion 13 constituting 0 is replaced with the inner frame-shaped portion 13a on the SPM side.
The length of the bridge is shortened, and the bridge-like connecting portions 11a and 11b are
And the plate thickness of the region of the middle frame-shaped portion 13 on the recording medium downstream side close to the bridge-shaped connecting portions 11a and 11b.
It is assumed that the thickness is larger than the plate thickness of the middle frame-shaped portion 13 in the region not close to 1a and 11b .

Gimbal spring 20 according to the twenty-fourth embodiment.
Is a bridge-like connecting portion 11a , 11b and this bridge-like connecting portion 1
The rigidity of the region of the middle frame-shaped portion 13 close to 1a and 11b can be increased, and the stress generated at the connecting portion between the bridge-shaped connecting portions 11a and 11b and the middle frame-shaped portion 13 can be relaxed, and the middle frame-shaped portion can be relaxed. Thirteen
Since the entire plate thickness is not changed, it is possible to suppress an increase in the rigidity of the spring element, and the same effect as that of the 23rd embodiment is achieved.

Example 25. 25A and 25B are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head support device showing another embodiment according to claim 7 of the present invention. In the twenty-fifth embodiment, the gimbal spring 2
The inner frame-shaped portion 13 forming 0 is replaced with the inner frame-shaped portion 13 on the SPM side.
The length of a is shortened, and the plate thickness of the bridge-shaped connecting portion 9 is made thicker than the plate thickness of the middle frame-shaped portion 13, and the same effect as that of the 23rd embodiment is achieved.

Example 26. 26 (a) and 26 (b) are respectively a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head support device showing an embodiment according to claim 8 of the present invention. Gimbal spring 20 according to the twenty-sixth embodiment
Is formed by connecting the central rectangular portion 8 to the middle frame-shaped portion 13 surrounding it and the bridge-shaped connecting portion 9, and the middle frame-shaped portion 13 is formed in a direction perpendicular to the outer holding portion 12 surrounding the central rectangular-shaped portion 13 and the bridge-shaped connecting portion 9. The bridge-shaped connecting portions 11 are connected to each other. Here, the middle frame-shaped portion 13 shortens the length of the middle frame-shaped portion 13a on the SPM side among the middle frame-shaped portions 13a and 13b forming the side orthogonal to the recording medium running direction, and at the same time, runs in the recording medium running direction. The viscoelastic member 15 is applied and formed on the bridge-shaped connecting portion 9a on the SPM side orthogonal to, and the middle frame-shaped portion 13c and the central rectangular portion 8 near the bridge-shaped connecting portion 9a.

The gimbal spring 20 having the above structure
Is a bridge-shaped connecting portion 9a on which the viscoelastic member 15 is applied and formed.
Also, the rigidity of the portion of the middle frame-shaped portion 13c is increased, the stress generated in the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed, and the plate thickness of the middle frame-shaped portion 13 is changed. Therefore, the rigidity of the spring element can be prevented from increasing. Moreover, the vibration of the gimbal spring 20 can be suppressed by the damping effect of the viscoelastic member 15.

As described above, according to the twenty-sixth embodiment, since the gimbal spring 20 is miniaturized, interference with the SPM or the like can be prevented, and the magnetic head supporting device can be miniaturized and thinned. It can be mounted on a thin recording / reproducing device. Further, since the viscoelastic member 15 is applied and formed on the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13C in the vicinity thereof, the stress generated at the connecting portion between the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c can be relaxed. The impact resistance can be improved without increasing the rigidity of the spring element. Furthermore, the viscoelastic member 15 can suppress the vibration of the gimbal spring 20, and stable recording / reproducing can be performed.

Example 27. 27 (a) and 27 (b) are a plan view and a cross-sectional view of a main portion of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 8 of the present invention. In the twenty-sixth embodiment, the gimbal spring 2
The inner frame-shaped portion 13 forming 0 is replaced with the inner frame-shaped portion 13 on the SPM side.
While the length of a is shortened, the viscoelastic member 15 is applied to the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c and the central rectangular portion 8 near the bridge-shaped connecting portion 9a. In the twenty-seventh embodiment, the length of the SPM- side middle frame-shaped portion 13a is shortened, and the bridge-shaped connecting portion 11 and the middle frame-shaped portion 13 and the outer holding portion 12 near the bridge-shaped connecting portion 11 are provided.
Further, the viscoelastic member 15 is applied and formed, and the same effect is obtained.

Example 28. 28A and 28B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head supporting device showing another embodiment according to claim 8 of the present invention. The circuit board is the object of interference. In the twenty-eighth embodiment, the middle frame-shaped portion 14 that constitutes the gimbal spring 20 has the short length of the middle frame-shaped portion 14c on the SPM side, and the bridge-shaped connecting portion 11a on the recording medium downstream side and the bridge-shaped connecting portion 11a. The viscoelastic member 15 is applied and formed on the middle frame-shaped portion 14a and the outer holding portion 12 in the vicinity of the connecting portion 11a , and the same effect as that of the 26th embodiment is obtained.

Example 29. 29A and 29B are a plan view and a cross-sectional view of a main part of a gimbal spring in a magnetic head support device showing another embodiment according to claim 8 of the present invention. In the twenty-sixth embodiment, the gimbal spring 2
The inner frame-shaped portion 13 forming 0 is replaced with the inner frame-shaped portion 13 on the SPM side.
While the length of a is shortened, the viscoelastic member 15 is applied to the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c and the central rectangular portion 8 near the bridge-shaped connecting portion 9a. In the twenty- ninth embodiment, the length of the SPM- side middle frame-shaped portion 13a is shortened, and the bridge-shaped connecting portion 9a and the middle frame-shaped portion 13c and the central rectangular portion 8 near the bridge-shaped connecting portion 9a are formed.
Further, the viscoelastic member 15b is applied and formed, and the viscoelastic member 15a is applied and formed thinner on the middle frame-shaped portion 13 other than the vicinity of the bridge-shaped connecting portion 9a, which is similar to the viscoelastic member 15b.

[0085]

Since the present invention is constructed as described above, it has the following effects.

A magnetic head supporting device according to a first aspect of the present invention comprises a gimbal spring for mounting the magnetic head and a supporting member for supporting the gimbal spring, and the gimbal spring has a central rectangular portion for fixing the magnetic head, A middle frame-shaped portion provided outside the central square portion, an outer holding portion provided outside the middle frame-shaped portion and supported by a supporting member, and a pair of opposing sides of the central square portion are respectively formed into the middle frame-shaped portion. A pair of narrow first connecting portions to be connected to each other, and a pair of narrow first connecting portions to connect the pair of opposite sides of the middle frame-shaped portion to the outer holding portions in a direction perpendicular to the connecting direction of the pair of first connecting portions. A magnetic head supporting device having a second connecting portion, wherein at least a pair of opposing sides of the middle frame-shaped portion is connected to the side.
One side of the connecting portion is formed shorter than the other side, and the width of the side of the middle frame-shaped portion formed shorter is narrower than that of the side formed longer. As a result, interference with SPM and circuit boards that occur during miniaturization and thinning is eliminated, it can be mounted on a compact and thin recording device, and the asymmetry tendency of spring elements due to miniaturization and thinning is reduced. ,
The deviation of the center of rotation can be suppressed, and the increase in spring constant can also be suppressed, so that a compact and thin magnetic head support system can be easily designed.

Further, in the magnetic head supporting apparatus according to the second aspect of the present invention, at least a pair of opposing sides of the middle frame-shaped portion are connected to one side of the first or second coupling portion. The side of the middle frame-shaped part is shorter than the side of the middle frame-shaped part. The rigidity of the side formed with a small thickness is reduced, and the increase in rigidity as a spring element due to the decrease of the portion of the short frame-shaped portion that acts as a spring can be suppressed. Can be reduced, deviation of the center of rotation can be suppressed, and further increase in spring constant can be suppressed, so that a compact and thin magnetic head support system can be easily designed.

According to a third aspect of the magnetic head supporting apparatus of the present invention, at least a pair of opposing sides of the middle frame-shaped portion are connected to the sides at one side of the first or second coupling portion. The width of the first or second connecting portion that is formed shorter than the other side and that is connected to the shorter formed side of the middle frame-shaped portion is the first or the first connected to the longer formed side. Since it is formed narrower than the width of the two connecting portions, the rigidity of the first or second connecting portion formed to be narrow is reduced, and the portion of the short formed middle frame-shaped portion that acts as a spring is reduced. As a result, the rigidity of the spring element can be prevented from increasing, the asymmetry tendency of the spring element can be reduced, the deviation of the center of rotation can be suppressed, and the increase of the spring constant can also be suppressed. Design of magnetic head support system Kill.

According to a fourth aspect of the present invention, in the magnetic head supporting device, at least a pair of opposing sides of the middle frame-shaped portion is connected to one side of the first or second coupling portion. Since the viscoelastic member is disposed on at least a part of the long side of the middle frame-shaped portion, the rigidity of the long middle side frame-shaped portion is improved. It rises and balances with the increase in rigidity as a spring element due to the decrease in the portion of the short frame-shaped portion that acts as a spring, the asymmetry tendency of the spring element is reduced, and the deviation of the rotation center can be suppressed. A compact and thin magnetic head support system can be easily designed.

Further, in the magnetic head supporting device according to the fifth aspect of the present invention, the width of at least one side of the middle frame-shaped portion is
Since it is formed wide in a region close to the first or second connecting part connected to one side thereof and narrow in a region not close to the first or second connecting part, it is close to the first or second connecting part. The rigidity of the spring element in the region of the wide middle frame-shaped portion increases, the stress concentrated in the region of the middle frame-shaped part can be relaxed, the impact resistance can be improved, and the first or second connection can be made. The rigidity of the spring element is reduced in the region of the narrow inner frame portion that is not close to the portion, and the change in rigidity of the spring element as a whole can be suppressed.

Further, in the magnetic head supporting apparatus according to the sixth aspect of the present invention, the second connecting portion is formed parallel to the running direction of the recording medium, and the width of the second connecting portion is equal to that of the first connecting portion. Since it is formed wider than the width,
The rigidity is increased, the stress concentrated on the second connecting portion can be relaxed, and the impact resistance can be improved.

Further, in the magnetic head supporting apparatus according to the seventh aspect of the present invention, at least one of the first connecting portion and the second connecting portion is an area in which the first and second connecting portions of the middle frame-shaped portion are not close to each other. Is thicker than the plate thickness, the rigidity of the first and second connecting portions formed with the plate thickness is increased, the stress concentrated in the region can be relieved, and the impact resistance can be improved. ..

Further, in the magnetic head supporting apparatus according to the eighth aspect of the present invention, since the viscoelastic member is arranged at least in either the first connecting portion or the second connecting portion, the viscoelastic member is arranged. The rigidity of the provided first and second connecting portions is increased, the stress concentrated in the area can be relieved, the shock resistance can be improved, and the vibration of the magnetic head support system can be suppressed, so that the recording is more stable. Can be played.

[Brief description of drawings]

FIG. 1 is a plan view of a gimbal spring in a magnetic head support device showing a first embodiment of the present invention.

FIG. 2 is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 2 of the present invention.

FIG. 3 is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 3 of the invention.

FIG. 4 is a plan view of a gimbal spring in a magnetic head support device showing a fourth embodiment of the present invention.

FIG. 5 is a plan view of a gimbal spring in a magnetic head supporting device showing a fifth embodiment of the present invention.

6A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 6 of the invention, and FIG. 6B is a sectional view taken along line VIb-VIb of FIG. 6A.

7A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 7 of the invention, and FIG. 7B is a sectional view taken along line VIIb-VIIb in FIG. 7A.

FIG. 8A is a plan view of a gimbal spring in a magnetic head supporting device showing an eighth embodiment of the present invention, and FIG. 8B is a sectional view taken along line VIIIb-VIIIb of FIG.

9A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 9 of the invention, and FIG. 9B is a sectional view taken along line IXb-IXb in FIG. 9A.

FIG. 10 is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 10 of the invention.

FIG. 11 is a plan view of a gimbal spring in a magnetic head support device showing an eleventh embodiment of the present invention.

FIG. 12A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 12 of the invention, and FIG. 12B is a sectional view taken along line XIIb-XIIb of FIG.

13A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 13 of the invention, and FIG. 13B is a sectional view taken along line XIIIb-XIIIb in FIG. 13A.

14A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 14 of the invention, and FIG. 14B is a sectional view taken along line XIVb-XIVb in FIG. 14A.

15A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 15 of the invention, and FIG. 15B is a sectional view taken along line XVb-XVb of FIG. 15A.

16A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 16 of the invention, and FIG. 16B is a sectional view taken along line XVIb-XVIb of FIG. 16A.

FIG. 17 is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 17 of the invention.

FIG. 18 is a plan view of a gimbal spring in a magnetic head support device showing an eighteenth embodiment of the invention.

FIG. 19 is a plan view of a gimbal spring in a magnetic head supporting device showing Embodiment 19 of the present invention.

FIG. 20 is a plan view of a gimbal spring in a magnetic head supporting device showing Embodiment 20 of the present invention.

FIG. 21 is a plan view of a gimbal spring in a magnetic head supporting device showing Embodiment 21 of the present invention.

FIG. 22 is a plan view of a gimbal spring in a magnetic head supporting device showing Embodiment 22 of the present invention.

23A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 23 of the invention, and FIG. 23B is a sectional view taken along line XXIIIb-XXIIIb of FIG.

24A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 24 of the invention, and FIG. 24B is a sectional view taken along line XXIVb-XXIVb of FIG.

25A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 25 of the invention, and FIG. 25B is a sectional view taken along line XXVb-XXVb of FIG. 25A.

26A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 26 of the invention, and FIG. 26B is a sectional view taken along line XXVIb-XXVIb of FIG.

27A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 27 of the invention, and FIG. 27B is a sectional view taken along line XXVIIb-XXVIIb of FIG. 27A.

28A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 28 of the invention, and FIG. 28B is a sectional view taken along line XXVIIIb-XXVIIIb in FIG. 28A.

29A is a plan view of a gimbal spring in a magnetic head support device showing Embodiment 29 of the invention, and FIG. 29B is a sectional view taken along line XXIXb-XXIXb of FIG.

FIG. 30 is a side view showing an example of a conventional magnetic head supporting device.

FIG. 31 is a plan view showing an example of a conventional gimbal spring.

FIG. 32 is a plan view showing another example of a conventional gimbal spring.

FIG. 33 is a plan view showing another example of a conventional gimbal spring.

FIG. 34 is a plan view showing another example of a conventional gimbal spring.

FIG. 35 is a perspective view showing another example of a conventional gimbal spring.

36 is a cross-sectional view taken along the line XXXVI-XXXVI of FIG. 35.

[Description of Reference Signs] 1 upper carrier (supporting member) 2 lower carrier (supporting member) 6 magnetic head 7 recording medium 8 central square portion 9 bridge-like connecting portion (first connecting portion) 11 bridge-like connecting portion (second connection) Part) 12 outer holding part 13 middle frame-shaped part 14 middle frame-shaped part 15 viscoelastic member 20 gimbal spring

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 25

[Correction method] Change

[Correction content]

FIG. 25

Claims (8)

[Claims] 1. A gimbal spring to which a magnetic head is attached, and a support member that supports the gimbal spring, the gimbal spring being provided on a central rectangular portion for fixing the magnetic head and outside the central rectangular portion. A middle frame-shaped part,
An outer holding portion provided outside the middle frame-shaped portion and supported by the support member, and a pair of narrow first links that connect a pair of opposing sides of the central rectangular portion to the middle frame-shaped portion, respectively. And a pair of narrow second connecting portions that respectively connect a pair of opposite sides of the middle frame-shaped portion to the outer holding portion in a direction perpendicular to the connecting direction of the pair of first connecting portions. In the magnetic head supporting device, at least a pair of opposing sides of the middle frame-shaped portion are formed such that one side of the first or second coupling section coupled to the sides is shorter than the other side. At the same time, the width of the side of the middle frame-shaped portion on the side of being formed shorter is narrower than the width of the side on the side of being formed longer. 2. A gimbal spring to which a magnetic head is attached, and a support member that supports the gimbal spring, the gimbal spring being provided on a central rectangular portion for fixing the magnetic head and outside the central rectangular portion. A middle frame-shaped part,
An outer holding portion provided outside the middle frame-shaped portion and supported by the support member, and a pair of narrow first links that connect a pair of opposing sides of the central rectangular portion to the middle frame-shaped portion, respectively. And a pair of narrow second connecting portions that respectively connect a pair of opposing sides of the middle frame-shaped portion to the outer holding portion in a direction perpendicular to the connecting direction of the pair of first connecting portions. In the magnetic head supporting device, at least a pair of opposing sides of the middle frame-shaped portion is formed such that one side of the first or second coupling section coupled to the side is shorter than the other side. At the same time, the plate thickness on the short-formed side of the middle frame-shaped portion is
A magnetic head supporting device, characterized in that it is formed thinner than the plate thickness on the longer side. 3. A gimbal spring to which a magnetic head is attached, and a support member that supports the gimbal spring, the gimbal spring being provided on a central rectangular portion for fixing the magnetic head and outside the central rectangular portion. A middle frame-shaped part,
An outer holding portion provided outside the middle frame-shaped portion and supported by the support member, and a pair of narrow first links that connect a pair of opposing sides of the central rectangular portion to the middle frame-shaped portion, respectively. And a pair of narrow second connecting portions that respectively connect a pair of opposite sides of the middle frame-shaped portion to the outer holding portion in a direction perpendicular to the connecting direction of the pair of first connecting portions. In the magnetic head supporting device, at least a pair of opposing sides of the middle frame-shaped portion are formed such that one side of the first or second coupling section coupled to the sides is shorter than the other side. At the same time, the width of the first or second connecting portion connected to the shorter side of the middle frame-shaped portion is larger than the width of the first or second connecting portion connected to the longer side. A magnetic head support device characterized in that it is formed narrow. 4. A gimbal spring for mounting a magnetic head, and a support member for supporting the gimbal spring, wherein the gimbal spring is provided on a central rectangular portion for fixing the magnetic head and outside the central rectangular portion. A middle frame-shaped part,
An outer holding portion provided outside the middle frame-shaped portion and supported by the support member, and a pair of narrow first links that connect a pair of opposing sides of the central rectangular portion to the middle frame-shaped portion, respectively. And a pair of narrow second connecting portions that respectively connect a pair of opposite sides of the middle frame-shaped portion to the outer holding portion in a direction perpendicular to the connecting direction of the pair of first connecting portions. In the magnetic head supporting device, at least a pair of opposing sides of the middle frame-shaped portion are formed such that one side of the first or second coupling section coupled to the sides is shorter than the other side. At the same time, a viscoelastic member is provided on at least a part of the elongated side of the middle frame-shaped portion. 5. A gimbal spring to which a magnetic head is attached, and a support member that supports the gimbal spring, the gimbal spring being provided on a central rectangular portion for fixing the magnetic head and outside the central rectangular portion. A middle frame-shaped part,
An outer holding portion provided outside the middle frame-shaped portion and supported by the support member, and a pair of narrow first links that connect a pair of opposing sides of the central rectangular portion to the middle frame-shaped portion, respectively. And a pair of narrow second connecting portions that respectively connect a pair of opposite sides of the middle frame-shaped portion to the outer holding portion in a direction perpendicular to the connecting direction of the pair of first connecting portions. A magnetic head supporting device, wherein the width of at least one side of the middle frame-shaped portion is connected to the one side.
Alternatively, the magnetic head supporting device is characterized in that it is formed wide in a region close to the second connecting portion and narrow in a region not close to the first or second connecting portion. 6. A central rectangular shape having a gimbal spring for mounting a magnetic head for recording and reproducing by contacting a traveling recording medium, and a supporting member for supporting the gimbal spring, wherein the gimbal spring fixes the magnetic head. Portion, an inner frame-shaped portion provided outside the central rectangular portion, an outer holding portion provided outside the intermediate frame-shaped portion and supported by the support member, and a pair of opposite sides of the central rectangular portion. And a pair of narrow first connecting portions that respectively connect to the middle frame-shaped portion, and a pair of opposing sides of the middle frame-shaped portion in a direction perpendicular to the connecting direction of the pair of first connecting portions, respectively A magnetic head supporting device having a pair of narrow second connecting portions connected to an outer holding portion, wherein the second connecting portion is formed parallel to a running direction of the recording medium, and the second connecting portion is formed. The width of the part is the first connection A magnetic head supporting device characterized in that it is formed wider than the width of the portion. 7. A gimbal spring to which a magnetic head is attached, and a support member that supports the gimbal spring, the gimbal spring being provided on a central rectangular portion for fixing the magnetic head and outside the central rectangular portion. A middle frame-shaped part,
An outer holding portion provided outside the middle frame-shaped portion and supported by the support member, and a pair of narrow first links that connect a pair of opposing sides of the central rectangular portion to the middle frame-shaped portion, respectively. And a pair of narrow second connecting portions that respectively connect a pair of opposite sides of the middle frame-shaped portion to the outer holding portion in a direction perpendicular to the connecting direction of the pair of first connecting portions. In the magnetic head supporting device, at least one of the first connecting portion and the second connecting portion is thicker than a plate thickness of a region of the middle frame-shaped portion which is not adjacent to the first and second connecting portions. A magnetic head supporting device characterized by being formed. 8. A gimbal spring for mounting a magnetic head, and a support member for supporting the gimbal spring, wherein the gimbal spring is provided on a central rectangular portion for fixing the magnetic head and outside the central rectangular portion. A middle frame-shaped part,
An outer holding portion provided outside the middle frame-shaped portion and supported by the support member, and a pair of narrow first links that connect a pair of opposing sides of the central rectangular portion to the middle frame-shaped portion, respectively. And a pair of narrow second connecting portions that respectively connect a pair of opposite sides of the middle frame-shaped portion to the outer holding portion in a direction perpendicular to the connecting direction of the pair of first connecting portions. A magnetic head supporting device, wherein a viscoelastic member is provided at least at one of the first connecting portion and the second connecting portion.