JPH0778436A - Head floating device - Google Patents

Abstract

PURPOSE:To prevent changes of a slider posture and optimally hold a floating state by providing a restraining means for limiting maximum displacement against flexure displacement between a suspension and a flexure. CONSTITUTION:The first and second stoppers 15A and 15B of a suspension 2 are inserted into the first and second holes 16A and 16B of a flexure 3 and the L-shaped horizontal parts of the stoppers 15A and 15B are projectingly formed on a tongue piece end 8A and its tip 8B. In this condition the tongue piece 8 of the flexure 3 is brought into contact with the suspension 2 via a load receiving point 9, the end 8A becomes a fixed point and tip 8B becomes free. Here, when the posture of the flexure 3 is greatly changed due to an outside force or an impact, the horizontal parts of the stoppers 15A and 15B are brought into contact with the end and the tip 8A and 8B and become stoppers for limiting displacement more than a spefified amount and in order to prevent deformations due to great displacement of the flexure 3 a floating condition is maintained in a proper posture at the time of loading or unloading.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head levitation device for flying a head above a recording medium at a predetermined interval, and particularly to a head levitation device for limiting the displacement of a flexure used in a head levitation mechanism. Regarding the device.

[0002]

2. Description of the Related Art In a hard disk device (HDD) used as an external storage device such as an electronic computer, a magnetic disk device for magneto-optical recording (MO), and the like, a rotary type for moving a magnetic head on a disk or A head levitation mechanism is fixed to a direct-acting actuator, and a slider head is attached to a flexure at the tip of a suspension of the head levitation mechanism. When recording or reproducing a disk of a recording medium with this head levitation mechanism, the head is in contact with the disk when the disk is in a stopped state,
The head is gradually levitated by the flow of air flow generated by the relative rotation of the head and the disc as the disc is rotated, and reaches the levitating amount at a predetermined distance from the disc, and the levitating amount is gradually reduced after the recording and reproduction are finished. A contact stop start (CSS) method is adopted in which the head comes into contact with the disk and stops. A slider having a head for flying with such a constant flying height is pressed by a suspension with a predetermined biasing force on the disk surface.

The head levitation mechanism 1 having such a suspension for supporting the head is made of a triangular metallic material having a predetermined rigidity, as shown in a back view and a side view of an example thereof, as shown in FIGS. 8 and 9. A flexure 3 made of a flexible material having a relatively low rigidity is attached to the tip of a suspension 2 made of a leaf spring. A divergent end of the suspension 2 is fixed to a fixed portion 4, and the fixed portion 4 is fixed to a rotary arm or the like. Further, the left and right end portions of the suspension 2 which are flared toward the end are rib portions 5L and 5R which are folded back to enhance the rigidity of the suspension, and the flexure 3 holds a slider 6 having a magnetic head.

10 and 11 are enlarged views of a portion A of FIGS. 8 and 9. As shown in FIGS. 10 and 11, the flexure 3 is made of one rectangular thin plate such as beryllium, and a rectangular U-shaped punched portion 7 is formed in the substantially central portion of the plate. The tongue piece 8 is formed by bending the tongue piece 8 downward by a height corresponding to the punching width W of the tongue piece 8.
Apply spring force to.

The tongue 8 is formed in a step shape so as to be parallel to the original rectangular thin plate in which a U-shaped punch is formed, and the tongue 8 is formed so as to face the suspension 2. In FIG. 10, a hemispherical projection is further formed by pressing or the like toward the back side of the paper to form the load receiving point 9.

As shown in FIG. 11, the tip of the load receiving point 9 is formed so as to contact the back surface of the tip of the suspension 2, and the flexure 3 is fixed to the back surface of the suspension 2 by spot welding or the like at the welded portion 11. To be done. A slider 6 shown by a broken line in FIG. 10 is fixed with an adhesive or the like below the tongue piece 8 with this load receiving point 9 as a fulcrum, and a specified load from the suspension 2 is received by the load receiving point 9 as a fulcrum. Is provided to the slider 6 via.

FIG. 12 shows an overall perspective view of such a head levitation device. In this case, a configuration example of the CSS type overwrite magnetic head for MO is shown. X and Y of slider 6
Grooves 12Y and 12X are provided along the axial direction.
The groove 12Y is a groove for embedding the U-shaped head 13, and the groove 12X is provided at the upper edge of the slider 6 so as not to impair the degree of freedom of the flexure 2.

[0008]

As described above, the flexure 3 is composed of almost one thin plate except for the press-processed portion of the bent portion. For this reason, in the process of assembling the head and the head levitation device itself, at the time of loading / unloading the head to the medium, during the loaded state, that is, during recording / reproduction, and in the unload holding state, that is, the head is separated from the medium surface When retreating and holding
It may be easily deformed by an external force or impact.

For example, in FIGS. 13A and 13B and FIGS. 14A and 14B, the flexure 3 that occurs when an external force or impact is applied.
The deformation of the slider 6 changes the posture of the slider 6, respectively.

In FIGS. 13A and 13B, the attitude of the slider 6 changes in the so-called pitch direction along the relative traveling direction with respect to the medium. For example, in the example shown in FIG. 13A, in the vicinity of the bent portion 10 of the flexure 3. Deformation occurs, the tip of the tongue piece 8 separates from the suspension 2, and the slider 6
13A, the right side is lowered and comes close to the surface of the medium, and the flying height of the slider 4 is changed.

Further, in FIG. 13B, the flexure 3
Deforms near the welded part 11 with the suspension 2,
An example is shown in which the bent portion 10 side is entirely bent downward, that is, toward the medium, and is lowered to the left in FIG. 13B of the slider 6. In FIGS. 13A and 13B, the arrow d indicates the rotation direction of the medium. Further, in FIGS. 14A and 14B, the posture of the slider 6 is changed by the deformation of the flexure 3 to the roll direction, that is, the rotation direction with the rotation axis being the direction along the pitch direction, and the tongue piece 8 of the flexure 3 is changed. The case where both the left and right sides following the bent portion are separated from the lower surface of the suspension 2 and the upstream side or the downstream side is lowered with respect to the medium rotation direction indicated by the arrow d is shown.

If the flexure 3 is deformed in this way, the ability of the slider 6 to follow the medium surface is impaired, and the flying state may be hindered.

Particularly when the CSS system as described above is adopted,
If the posture of the slider 6 changes and the slider 6 descends from the edge of the slider at the end of recording / reproduction, the medium surface may be damaged. Further, the air contained in the recording / reproducing apparatus or the water contained in the dust adheres to the medium, which causes a so-called stiction phenomenon in which the head sticks to the medium surface when the medium is stopped. In order to avoid this, texture processing is usually performed to roughen the medium surface, but in recent years the flying height has been reduced with the improvement in recording density to reduce spacing loss. The CSS method that also uses texture processing has a problem that it is difficult to apply to high density recording.

On the other hand, without using the CSS method described above,
A so-called NON-CSS (non-contact start / stop) method has been studied in which the head is separated from the surface of the medium by a predetermined distance even when the medium is stopped (for example, U.S. Pat. No. 4,933,785, Integra). Magnetic disk device manufactured by Le company, Japanese Patent Application No. 4 related to the applicant's application
-80996 application). When this NON-CSS method is adopted, the above-described texture processing is unnecessary and high density recording becomes possible.

Particularly in such a NON-CSS system, the accuracy of the attitude of the slider with respect to the medium surface at the time of loading / unloading is very important, and the attitude of the slider changes with the deformation of the flexure 3 described above. Then, the slider 6 may come into contact with the medium at the time of loading / unloading, and the impact thereof may be large, which may damage the slider 6 and cause a head crash or the like.

Further, the slider 6 taps (beats) the surface of the medium in accordance with a change in the attitude of the slider 6, or the followability of the slider 6 to the air flow is impaired, which affects the flying height. In addition, contact between the head and the medium cannot be avoided during the load / unload operation, which may cause damage to the medium or an error during recording / reproduction, which lowers reliability.

The present invention suppresses the maximum change amount of the flexure itself as described above to prevent the posture of the slider in the pitch direction and the roll direction from changing, and avoids collision between the slider and the medium and tapping of the slider. It is an object of the present invention to suppress the damage of the medium and the occurrence of errors at the time of recording and reproducing, and to improve the reliability of the recording and reproducing characteristics.

[0018]

As shown in FIG. 1, a head levitation device of the present invention has a flexure 3 for holding a slider 6 provided with a head, and a flexure 3 for this flexure 3.
In a head levitation device 1 composed of a suspension 2 attached to the tip, locking means 15A and 15B for restricting the maximum displacement amount of the flexure 3 with respect to the displacement of the head levitation device 1 during operation or non-operation. It comprises.

[0019]

The head levitation device of the present invention is provided with the locking means 15A and 15B between the suspension 2 and the flexure 3 for restricting the maximum displacement with respect to the displacement of the flexure 3, so that an external force or impact is applied to the flexure 3. Even if the flexure 3 is deformed, it is possible to prevent deformation of the flexure 3, that is, change in the posture of the slider 6 with respect to the medium in the pitch direction as well as in the roll direction, and to obtain a flying state that can be appropriately maintained.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The magnetic head levitation device of the present invention will be described in detail below with respect to the leaf spring structure of a wallast type slider. FIG. 1 is a perspective view of a magnetic head levitation device applied to an MO type magnetic disk device showing an embodiment of the present invention, and FIG. 2 is a perspective view showing an assembled state of FIG. The flying height of the head levitation device is determined by the levitation force of the air film during the rotation of the medium and the pressing force of the suspension 2 which is a supporting plate spring of the slider 6, and for example, although not shown, the end of the suspension 2 is a rotary type. It is fixed to the arm, etc.

1 and 2, parts corresponding to those in FIGS. 8 to 12 are designated by the same reference numerals. As shown in FIG. 2, in the slider 6 shown by the one-dot chain line in FIG. 1, a magnetic head embedding groove 12Y is provided on the left end side wall so as to communicate from the front end surface to the rear end surface of the slider 6, and for example, a U-shaped winding core. The magnetic head 13 having the is embedded. Further, the flexure 3 is supported in a cantilever manner, and a groove 12Y is provided at the edge of the upper surface of the slider 6 so as not to impair the degree of freedom when vibrating flexibly.

The flexure 3 has a U-shaped punched-out portion 7 formed on a rectangular thin plate in the same manner as described in detail with reference to FIGS. 10 and 11. The punched-out portion 7 is different from the case of FIG.
A rectangular second through hole 16B, which is not formed in the same shape as the tip of the tongue piece 8 and into which a stopper 15B serving as a locking means provided in the suspension 2 described later can be inserted, communicates with the left and right grooves having a punching width W. It is provided to do.

The tongue 8 is bent downward (upward in FIG. 2) by the groove width W of the U-shaped punched portion 7 through the bent portion 10 to form the original rectangle in which the U-shaped punched portion 7 is formed. As a result, the tongue piece 8 constitutes a vibrating member which is cantilevered with respect to the original rectangular thin plate. In FIG. 2, the tongue piece 8 can be vertically vibrated.

A load receiving point 9 is formed on the tongue piece 8 and a rectangular first through hole 16A is formed.

Further, the suspension 2 composed of a triangular leaf spring having a predetermined rigidity is fixed to a fixed portion (not shown) as in FIGS. 8 and 9, and the fixed portion is fixed to a rotary arm or the like. Ribs 5L and 5 that are folded back to increase rigidity at the left and right ends of the suspension 2
R is formed.

Further, the U-shaped punched-out portion 1 is insertable into the second through-hole 16B formed in the punched-out portion 7 of the flexure 3 and the first through-hole 16A formed in the tongue piece 8.
7B 'and a cut-and-raised portion 17A are formed, and the cut-and-raised portion 17B formed from the cut-and-raised portion 17A and the punched-out portion 17B' is bent into an L-shape to serve as a locking piece of the locking means. Plant 15A and 15B.

The L-shaped first and second stoppers 15
The height H of A and 15B is selected to a value that defines the upper limit of displacement when a predetermined external force or impact is applied to the flexure 3 or / and the suspension 2, and L of the cut and raised portions 17A and 17B is selected. The letter-shaped horizontal portion operates as a stopper. The direction of this horizontal part is, for example, the suspension 2
It is bent in a fixed direction toward the tip of the so that the processing and assembling steps will not be changed from the conventional one.

In order to assemble the respective parts having the above construction, the first and second stoppers 15A and 15B of the suspension 2 are attached to the first and second parts of the flexure 3 as shown in FIG.
2 through the through holes 16A and 16B of FIG.
When moved in the direction of arrow A with, the first and second stoppers 1
The L-shaped horizontal portions of 5A and 15B are projected on the tongue end 8A and the tongue tip 8B. In this state, the flexure 3 is spot welded to the suspension 2 at the welded portion 11.

In this state, the tongue piece 8 of the flexure 3 contacts the suspension 2 through the load receiving point 9, the tongue piece end 8A of the tongue piece 8 becomes a fixed point, and the tongue piece tip 8B is free. The slider 6 is fixed to the flexure 3 as described above with reference to FIGS. 10 and 11, and the head floating mechanism is sub-assembled as shown in FIG.

According to the head levitation device as described above, when the posture of the flexure 3 is largely changed in the pitch direction or the roll direction by the external force or the impact, the first and second stoppers 15A are provided.
The horizontal portions of 15 and 15B come into contact with the tongue piece end 8A and the tongue piece tip 8B to serve as stoppers that limit displacement above a predetermined level.
In order to prevent the flexure 3 from being deformed due to a large displacement, the floating state can be maintained in an appropriate posture during loading or unloading. Therefore, it is possible to prevent the collision and tapping between the slider 6 and the medium due to the deformation of the flexure 3.

Next, another structure of the head levitation device of the present invention will be described with reference to FIGS. In the case of this example, a suspension through hole for stopper is provided on the suspension 2 side, and first and second stoppers are provided on the flexure 3 side. FIG. 3 is an assembled perspective view, and FIG. FIG. 5 is a perspective view in which the stopper is locked from the upper side of the suspension, and FIG. 5 is an assembled perspective view.

In FIGS. 3 to 5, parts corresponding to those in FIGS. 1 and 2 are designated by the same reference numerals, and duplicate description will be omitted. Slider 6
May have substantially the same configuration as in FIG.

The flexure 3 also has a U-shaped punched-out portion 7 formed at a substantially central portion of a rectangular thin plate and a bent portion 10.
The tongue piece 8 is configured to be cantilevered in a stepped manner via the. Needless to say, the load receiving point 9 is provided on the tongue 8 substantially at the center position of the tongue 8, and the load receiving point 9 is configured in the same manner as in FIG.

The tip portion of the tongue piece 8 of the flexure 3 is bent downward at a right angle as shown in FIGS. 3 and 4, and the tongue piece tip 8B is made parallel to the main surface of the tongue piece 8. A second stopper 1 which is bent into a substantially L shape and serves as a locking means.
5B is formed.

On the other hand, a U-shaped punch-out portion 17A 'is formed in the vicinity of the tongue piece end 8A of the tongue piece 8, and a first stopper 15A composed of an L-shaped cut-and-raised portion 17A is formed. Such first and second stoppers 15A and 15B are clearly shown in FIG.

Next, in the suspension 2, a rectangular second through hole 16B into which the stopper 15B can be inserted is formed at a position corresponding to the second stopper 15B.

The first stopper 15 of the flexure 3 described above.
A is on the front side of the front edge of the suspension 2, and the second stopper 15B is inserted into the second through hole 16B of the suspension 2. Next, when the flexure 3 is moved in the direction of arrow A in FIG. 3, the horizontal portion of the first stopper 15A is projected to the tip of the suspension 2 as shown in FIG. 4, and the tongue tip 8B of the second stopper 15B is also pushed. From the rear end edge of the rectangular through hole, the suspension 2 is projected to a region D shown by hatching in FIG.

In this state, as shown in the assembly drawing of FIG.
Spot welding is performed to fix the flexure 3 on the suspension 2 and the slider 6 on the flexure 3.

Even with such a structure, it is possible to prevent the attitude change of the slider in the pitch direction and the roll direction, as in FIGS. 1 and 2. In this configuration, the slider 6 and the first and second stoppers 15A and 15B do not face each other as shown in FIGS. 2 and 3, so that the shape and size of the slider 6 can be relatively freely changed, and the degree of freedom of the slider shape can be increased. You can

FIG. 6 is a perspective view of a suspension 2 showing another example of the structure of this example, in which stoppers 15A and 15B are provided on the side of the suspension 2 in the same manner as shown in FIGS. 1 and 2. is there.

In this example, first and second inverted L-shaped stoppers 15A and 15B are cut and raised from the suspension 2 as shown by an arrow E to be planted. The first and second stoppers 15A are provided. And 15B, grooves on the flexure 3 which are slightly longer than the length L of the horizontal portions 20A and 20B are formed in the corresponding positions, and the first and second stoppers 15 are formed in these grooves.
A and 15B are inserted.

FIGS. 7A and 7B show still another embodiment of this example, which is different from the case where the first and second stoppers 15A and 15B are formed on the flexure 3 side described in FIGS. FIG. 7A is a rear perspective view of the flexure 3 of this embodiment, and FIG. 7B is a top perspective view of the stopper.

In the structure of the flexure 3, as in FIG. 3, the tongue piece 8, the punched portion 7, the bent portion 10 and the load receiving point 9 are formed. The L-shaped cut-and-raised portion 17B has a shape capable of forming an L-shaped punched-out portion 17B 'having a shape to laterally cut and raise the tongue tip 8B of the tongue 8 so as to communicate with the punched-out portion 7. To raise the second stopper 15
Configure B. Further, an L-shaped punched-out portion 17A 'is also formed in the vicinity of the tongue end 8A of the tongue piece 8 and an inverted L-shaped cut-and-raised portion 17A is cut and raised to form a first stopper 15A.

A groove corresponding to the length L of the horizontal portions 20A and 20B of such L-shaped first and second stoppers 15A and 15B is provided on the suspension 2 side.

In the case of the stopper having the structure shown in FIGS. 6 and 7, since the stoppers 15A and 15B are provided on one side of the flexure 3 or the suspension 2, the symmetry is lost, but the strength of the stoppers 15A and 15B is low. The groove which is improved and serves as a through hole can be made smaller than in FIGS. 1 and 5.

In each of the above-mentioned embodiments, the stopper is cut and raised from the suspension 2 or the flexure 3. However, it is obvious that the stopper can be made separately and attached to the suspension or the flexure. Can also be appropriately selected.

[0047]

According to the present invention, even if an external force, impact, etc. are applied to the head levitation device and the flexure is deformed to change the posture of the slider in the pitch direction or the roll direction, the change range is restricted within a predetermined range. Therefore, the flying height can be maintained within an appropriate range with respect to the disk surface of the slider when the head flying device is loaded / unloaded. Therefore, collision between the slider and the disk due to the deformation of the flexure can be avoided, and tapping can be prevented, so that a highly reliable NON-CSS type head flying device without damaging the disk surface can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a head levitation device of the present invention.

FIG. 2 is an assembled perspective view of the head levitation device of the present invention.

FIG. 3 is a perspective view showing another assembled state of the head levitation device of the present invention.

FIG. 4 is a perspective view showing another insertion state of the head levitation device of the present invention.

FIG. 5 is a perspective view showing another example of the head levitation device of the present invention.

FIG. 6 is another configuration diagram of the stopper of the head floating device of the present invention.

FIG. 7 is still another configuration diagram of the stopper of the head floating device of the present invention.

FIG. 8 is a rear view of a conventional head floating device.

FIG. 9 is a side view of a conventional head levitation device.

FIG. 10 is an enlarged back view of a main part of a conventional head floating device.

FIG. 11 is an enlarged side view of a main part of a conventional head floating device.

FIG. 12 is an overall perspective view of a conventional head levitation device.

FIG. 13 is an explanatory diagram of a posture change in a pitch direction due to deformation of a conventional flexure.

FIG. 14 is an explanatory diagram of a posture change in a roll direction due to deformation of a conventional flexure.

[Explanation of symbols]

 1 Head Floating Mechanism 2 Suspension 3 Flexure 6 Slider 8 Tongue 15A, 15B Stopper (Locking Means) 16A, 16B Through Hole

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[Procedure amendment]

[Submission date] August 16, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art In a hard disk device (HDD) used as an external storage device such as an electronic computer, a magnetic disk device for magneto-optical recording (MO), and the like, a rotary type for moving a magnetic head on a disk or Direct acting actuator
The head levitation mechanism is fixed to the chute, and the head is attached to the flexure at the tip of the suspension of this head levitation mechanism .
The slider is attached. When recording or reproducing a disk of a recording medium with this head levitation mechanism,
When the disk is stopped, the head is in contact with the disk, and due to the flow of the air flow generated by the relative rotation of the head and the disk as the disk rotates, the head gradually rises and floats at a predetermined distance from the disk. The contact stop start (CSS) system is adopted in which the flying height is gradually reduced after the recording / reproducing is completed and the head comes into contact with the disk to stop. A slider having a head for flying with such a constant flying height is pressed by a suspension onto a disk surface with a predetermined biasing force.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

10 and 11 are enlarged views of a portion A of FIGS. 8 and 9. These views 10 and the flexure 3 as shown in FIG. 11 comprises a rectangular thin plate, such as the one beryllium, U-shaped punched portion 7 in a substantially central portion of the plate material of the rectangle are formed, the lower side The tongue piece 8 is pushed downward by forming the bent portion 10 that is bent to the bottom.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

[0005] tongue 8 is made as a U-shaped former which punching is formed of a rectangular thin plate and the step difference shape, the tongue 8 is made so as to face the suspension 2. In FIG. 10, a hemispherical projection is further formed by pressing or the like toward the back side of the paper to form the load receiving point 9.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

FIG. 12 shows an overall perspective view of such a head levitation device. In this case shows an example of the structure of MO for o Baraito magnetic head. Grooves 12Y and 12X are provided along the X and Y axis directions of the slider 6. The groove 12Y is a groove for embedding the U-shaped head 13, and the groove 12X is provided at the upper edge of the slider 6 so as not to impair the degree of freedom of the flexure 3 .

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

In FIGS. 13A and 13B, the flexure 3 is
Due to the deformation, the posture of the slider 6 changes in the roll direction, that is, the pitch.
Example of changing to the direction of rotation with the direction along the H direction as the axis of rotation
Thus , for example, in the example shown in FIG. 13A, deformation occurs near the bent portion 10 of the flexure 3, the tip of the tongue piece 8 separates from the suspension 2, and the right side of the slider 6 in FIG. This is a case where the slider 4 approaches the medium surface and the flying height of the slider 4 fluctuates.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

Further, in FIG. 13B, the flexure 3
Deforms near the welded part 11 with the suspension 2,
An example is shown in which the bent portion 10 side is entirely bent downward, that is, toward the medium, and is lowered to the left in FIG. 13B of the slider 6. In FIGS. 13A and 13B, the arrow d indicates the rotation direction of the medium. Furthermore, in FIGS. 14A and 14B , the so-called pitch direction along the relative traveling direction with respect to the medium is shown.
When the attitude of the slider 6 is changed to , the left and right side portions of the flexure 3 that follow the bent portion of the tongue piece 8 are separated from the lower surface of the suspension 2, respectively, and the upstream side with respect to the medium rotation direction indicated by the arrow d. Or, it shows the case where the downstream side goes down.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

For example, in the case of adopting the CSS system as described above, particularly when the attitude of the slider 6 is changed at the end of recording / reproducing and the slider 6 descends from the edge portion of the slider, the medium surface may be damaged. Further, the air contained in the recording / reproducing apparatus or the water contained in the dust adheres to the medium, which causes a so-called stiction phenomenon in which the head sticks to the medium surface when the medium is stopped. In order to avoid this, texture processing is usually performed to roughen the medium surface, but in recent years the flying height has been reduced with the improvement in recording density to reduce spacing loss. The CSS method that also uses texture processing has a problem that it is difficult to apply to high density recording.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

However, particularly in such a NON-CSS system, the accuracy of the attitude of the slider with respect to the medium surface at the time of loading / unloading is very important, and the attitude of the slider changes with the deformation of the flexure 3 described above. Then, the slider 6 may come into contact with the medium at the time of loading / unloading, and the impact thereof may be large, which may damage the slider 6 and cause a head crash or the like.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

[0020]

EXAMPLES Hereinafter, Shoki with the magnetic head floating equipment of the present invention. FIG. 1 is a perspective view of a magnetic head levitation device applied to an MO type magnetic disk device showing an embodiment of the present invention, and FIG. 2 is a perspective view showing an assembled state of FIG. Flying height of the head flying apparatus Sadamari the pressing force of the suspension 2 or the like as a buoyant force and supporting lifting spring of the slider 6 of the air film during rotation of the medium, for example, not shown, the end of the suspension 2 rotating type It is fixed to the arm, etc.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

1 and 2, parts corresponding to those in FIGS. 8 to 12 are designated by the same reference numerals. As shown in FIG. 2, in the slider 6 shown by the one-dot chain line in FIG. 1, a magnetic head embedding groove 12Y is provided on the left end side wall so as to communicate from the front end surface to the rear end surface of the slider 6, and for example, a U-shaped winding core. The magnetic head 13 having the is embedded. Further, a groove 12Y is provided at the edge portion of the upper surface of the slider 6 so that the flexure 3 is supported in a cantilever manner and does not impair the flexibility when elastically deforming and vibrating flexibly.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

The flexure 3 has a U-shaped punched-out portion 7 formed on a rectangular thin plate in the same manner as described in detail with reference to FIGS. 10 and 11. The punched-out portion 7 is different from the case of FIG.
Punching a second hole 16B stopper 15B which is a locking means provided on the suspension 2 is shaped insertable rectangle described below without made the tip 8B the same shape of the tongue of the left and right
It is provided so as to communicate with the groove .

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

The tongues 8 are bent downward (in FIG. 2 upwards) via the flexion curved portion 10, since the relative U-shaped original punching 7 is formed of a rectangular thin plate made stepwise As a result, the tongue piece 8 constitutes a vibrating member which is cantilevered with respect to the original rectangular thin plate. In FIG. 2, the tongue piece 8 can be vertically vibrated.

[Procedure Amendment 13]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction content]

[Figure 10]

[Procedure Amendment 14]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 13

[Correction method] Change

[Correction content]

[Fig. 13]

[Procedure Amendment 15]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 14

[Correction method] Change

[Correction content]

FIG. 14

Claims (3)

[Claims] 1. A head levitation device comprising a flexure for holding a slider provided with a head, and a suspension having the flexure attached to a tip thereof, wherein the head levitation device is displaced when operating or not operating. A head levitation device comprising locking means for restricting the maximum displacement of the flexure. 2. The head floating device according to claim 1, wherein a stopper serving as the locking means is provided on the flexure. 3. The suspension is provided with a stopper as the locking means.
The head levitation device described.