JP3398736B2 - Head support device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head supporting device such as a disk device having a flying head, for example, a magnetic disk device, an optical disk device, and a magneto-optical disk device.

[0002]

2. Description of the Related Art A conventional head supporting device in a magnetic recording / reproducing apparatus such as a hard disk device will be described with reference to the drawings as an example of a head supporting device for a disk device having a conventional flying head.

FIG. 6 is a plan view showing the structure of a head supporting device of a conventional magnetic recording / reproducing apparatus and the relationship between the head supporting device and the magnetic recording medium.

In FIG. 6, the head support device 108 is
Suspension 102 and leaf spring 10 having relatively low rigidity
3 and a relatively rigid support arm 104,
A slider 101 having a magnetic head (not shown) mounted thereon was provided on the lower surface of one end of the suspension 102.

Further, the magnetic recording medium 107 is provided so as to be rotated by a spindle motor 109, and at the time of recording / reproducing of the magnetic recording / reproducing apparatus, the levitation force by the air flow generated by the rotation of the magnetic recording medium and the slider 10 are provided.
Due to the relationship with the biasing force of the head supporting device that biases 1 toward the magnetic recording medium 107 side, the magnetic head mounted on the slider 101 obtained a constant flying height.

The head supporting device 108 is used for recording and reproducing data by the voice coil 1 provided on the supporting arm 104.
By the action of 06, the magnetic head mounted on the slider 101 is positioned with respect to a desired track of the magnetic recording medium 107 by rotating around the bearing portion 105, and recording / reproducing is performed. .

The magnetic recording / reproducing apparatus shown in FIG. 6 is generally a contact start / stop system (hereinafter referred to as CS
The magnetic head is in contact with the magnetic recording medium 107 when the magnetic recording medium 107 is stopped, but is provided on the slider 101 during recording and reproducing as described above. It is characterized in that the obtained magnetic head is levitated from the magnetic recording medium 107.

[0008] Such a CSS type magnetic recording medium 10
In FIG. 7, the area indicated by A in FIG. 6 is a magnetic recordable area, and the area indicated by B is an area for retracting the magnetic head when stopped. When the rotation of the magnetic recording medium 107 is stopped, first, the magnetic head is moved to the area B while floating. Then, when the rotation of the magnetic recording medium 107 is reduced, the air flow between the magnetic recording medium 107 and the slider 101 is reduced, and the levitation force is reduced. Contact and stop in that state.

Therefore, in the CSS type magnetic recording medium 107, the surface of the region B is formed to be rougher than the surface of the region A, so that the magnetic head is attracted to the magnetic recording medium 107 when stopped. The problem of mechanically and magnetically damaging the magnetic recording medium 107 at startup is prevented.

Further, as another system of the head supporting device, there is a load / unload system (hereinafter referred to as L / UL system).

FIG. 8 is a schematic perspective view showing the structure of an L / UL type magnetic recording / reproducing apparatus. In FIG. 8, the head support device 108 has a configuration substantially similar to the head support device 108 in the CSS system shown in FIG. 6, but when the magnetic recording / reproducing device is stopped, the head support device 108 is centered on the bearing portion 105. It rotates and moves to the outside of the magnetic recording medium 107. At this time, outside the magnetic recording medium 107,
The magnetic head holding portion 110 is provided, and the slider 101 supported by the suspension 102 is mounted on the taper portion thereof so as to prevent the slider 101 and the magnetic head from being attracted to the magnetic recording medium 107. .

Next, the structure and operation of the conventional head support device will be described in more detail with reference to FIG. Figure 7
It is a principal part perspective view of the part in which the magnetic head was provided in the conventional head support device.

A magnetic head (not shown) is provided on the surface of the slider 101, which is provided on the lower surface of one end of the suspension 102, facing the magnetic recording medium 112, and the other end of the suspension 102 is bent to form a leaf spring. Part 103
The leaf spring portion 103 is connected to the support arm 104. In the CSS method, the slider 101 is in contact with the magnetic recording medium when the rotation of the magnetic recording medium is stopped, and the reaction force of the leaf spring portion 103 against the magnetic recording medium biases the slider 101 toward the magnetic recording medium. It was a composition.

[0014]

As described above, in the head supporting device of the magnetic recording / reproducing apparatus, it is necessary to apply a predetermined load to the slider in the magnetic recording medium direction.

This is to prevent the off-track of the magnetic head mounted on the slider by stably flying the slider even if an external shock or vertical movement of the magnetic recording medium surface occurs during recording / reproduction. It was

Further, during recording / reproducing of the magnetic recording / reproducing apparatus, it is necessary for the slider to follow the vertical movement of the surface of the magnetic recording medium, etc., so that the head supporting apparatus has a structure having some flexibility. Was needed.

Furthermore, miniaturization of the magnetic recording / reproducing apparatus,
In particular, in order to achieve thinning, it was necessary to thin the head supporting device in the direction perpendicular to the surface of the magnetic recording medium.

However, in the conventional head supporting device, as described above, since the suspension and the supporting arm are connected by the leaf spring portion, in order to satisfy various requirements for the head supporting device. , Were required to meet conflicting requirements.

Specifically, first, in order to stably fly the slider on which the magnetic head is mounted, it is necessary that the leaf spring portion has a reaction force sufficient to apply a load required to the slider. It was

Next, the load of the slider on the magnetic recording medium may change due to the vertical movement of the magnetic recording medium or manufacturing variations in the distance between the slider and the magnetic recording medium for each magnetic recording / reproducing apparatus during mass production. In order to prevent it, it was necessary for the head support device to have some flexibility.

In the conventional head supporting device, the leaf spring portion is provided with the notch portion 111 as shown in FIG. 7, whereby the rigidity of the leaf spring portion is reduced, and the spring constant thereof is reduced to provide flexibility. It was designed to have.

Further, when the suspension has a thin plate structure in order to reduce the rigidity of the leaf spring portion, when the head supporting device moves for positioning, the frequency of the main resonance point, that is, the so-called resonance frequency is low, so that twisting or the like occurs. However, as a result, it takes time to settle the generated vibration mode, and as a result, there is a limit in shortening the access time.

Further, in the conventional head supporting device, its center of gravity is located closer to the magnetic head than the plate spring portion, and therefore, when a strong external shock or the like is applied to the magnetic recording / reproducing device, the slider portion is moved. The phenomenon in which the slider jumps from the magnetic recording medium due to an imbalance between the levitation force generated by the air flow generated by the rotation of the magnetic recording medium and the urging force generated by the head support device that urges the slider toward the magnetic recording medium. Occur. As a result, the slider may collide with the magnetic recording medium and cause magnetic or mechanical damage to the magnetic recording medium.

The load applied to the slider is determined by the forming of the leaf spring. However, the load applied varies depending on the type of slider, so it is necessary to change the suspension according to the slider.

Further, when the predetermined load cannot be obtained due to the variation of the leaf spring, the only method is to discard the suspension. The reason for this is that the forming shape of the leaf spring has a great influence on not only the load adjustment but also the resonance characteristic of the suspension. Therefore, if the load is adjusted later, the resonance performance of the suspension will be sacrificed.

The above-mentioned problems are not peculiar to the magnetic recording / reproducing apparatus, and the disk devices having the flying head, such as the optical disk device and the magneto-optical disk device, have the same problems.

The present invention has been made in order to solve these problems, and provides a thin and highly shock-resistant head supporting device having high flexibility while applying a necessary and sufficient load to the head. . Further, the purpose is to be able to arbitrarily set the load applied to the slider.

[0028]

SUMMARY OF THE INVENTION A head support device of the present invention comprises a support arm to which a head is attached and the support arm.
A bearing portion for rotating the chamber in the radial direction of the recording medium,
The support arm can be rotated vertically to the recording surface.
Pivot bearing having a pair of tops, and the support arm
Biasing force to the recording medium toward the recording medium
Elastic means for fixing the elastic means to the bearing portion
Fixing means and adjusting means for varying the amount of deformation of the elastic means
And having. Accordingly, the portion having the rigid body and the portion having the elasticity can be provided independently of each other, so that it is possible to provide the head supporting device having a high resonance frequency.

Further, when an impact is applied from the outside, the support arm portion can be formed of a highly rigid member, so that the impact resistance can be enhanced. Since the head supporting device is configured to be vertically rotatable, the head can be held away from the recording medium when the recording medium is stopped.

Further, since the elastic means is the leaf spring provided between the bearing portion and the support arm, it is possible to easily provide a thin head support device in a direction perpendicular to the recording medium.

Further, the bearing portion is provided with a pivot bearing having a pair of tops so as to be in contact with the support arm, and the support arm serves as a fulcrum at a point where the top of the pivot bearing abuts the support arm as a fulcrum. By being provided so as to be rotatable in the vertical direction, the center of rotation can be accurately determined with a simple configuration, so that the positioning control of the head can be performed more accurately.

A pair of tops provided on the pivot bearing passes through the axis of the bearing and is perpendicular to the longitudinal direction of the support arm, and on a line passing through the longitudinal direction of the support arm. By being provided so as to be in contact with the support arm, it is possible to provide a head support device having a good weight balance in the longitudinal direction of the support arm and excellent impact resistance.

Further, since the tops of the pivot bearings are provided at positions symmetrical with respect to the longitudinal center line of the support arm, the weight balance of the support arm in the width direction is good and the head is excellent in impact resistance. A support device can be provided.

Further, since the head is held by the slider provided on the support arm, the head can be floated more accurately by the slider design.

Further, since the gimbal mechanism for freely supporting the slider in the roll direction and the pitch direction is provided on the support arm, the roll direction and the pitch direction of the slider with respect to the recording medium are unnecessary at the time of recording / reproducing of the recording / reproducing apparatus. It is possible to absorb such a tilt by the gimbal mechanism.

Further, since the voice coil motor provided on the support arm rotates the support arm in the radial direction of the recording medium, a higher speed rotation operation becomes possible.

Furthermore, it is held by elastic means.
Center of gravity of the support arm, with respect to the recording surface of the radial pivot axis and the recording medium of the recording medium of the support arm, be configured to be identical to the intersection of the vertical pivot axis, from the outside If there is a shock or the like, it is possible to minimize unnecessary vibration of the support arm.

The biasing force of the slider with respect to the magnetic disk medium can be arbitrarily adjusted by changing the height of the bearing-side fixing portion of the leaf spring. Therefore, even if the load specification of the slider is changed, it is not necessary to change the head support mechanism.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) First, as Embodiment 1, the operation principle of the head supporting apparatus of the present invention will be described by taking a magnetic recording / reproducing apparatus as an example.

FIG. 1 is a side view showing a schematic structure of the head supporting device for showing the operation principle of the head supporting device of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is an exploded structural view. .

In FIGS. 1 and 2, the slider 1 having a magnetic head (not shown) on the lower surface thereof is mounted on the lower surface at one end thereof. It is fixed to one end side of the. The other end side portion of the plate spring portion 4 is fixed to the spring fixing member 5 is secured to the pivot bearing 11 via a spacer 50.

As a result, the support arm 2 is elastically held by the pivot bearing 11 via the plate spring portion 4.

The pivot bearing 11 has a pair of tops 1.
1a and 11b (not shown) are provided, the tops of which are shown in FIG.
And Pb, and one end side of the support arm 2 is urged toward the magnetic recording medium 12 by the elastic force of the leaf spring portion 4. At this time, compressive stress is generated at the contact points Pa and Pb. When the magnetic recording medium 12 is not present, the leaf spring portion 4 is deformed, and the support arm 2 is arranged at the position shown by the dotted line in FIG.

The tops 11a and 11b of the pivot bearing 11 are perpendicular to the rotation center axis direction when the support arm 2 rotates in the radial direction of the magnetic recording medium 12 and the longitudinal direction of the support arm 2. , Is provided so as to come into contact with the support arm 2 on a line passing through the rotation center axis.

During operation of the magnetic recording / reproducing apparatus, the support arms 2 are brought into the state shown by the solid line in FIG. 1 by the top portions 11a and 11b of the pivot bearing 11. At this time, the leaf spring 4 is deformed from the flat state into the substantially S-shape shown in the drawing. At this time, the load load on the slider 1 is generated by the elastic force of the plate spring 4 with the tops 11a and 11b of the pivot bearing 11 as levers.

The amount of deformation of the leaf spring 4 can be changed by changing the thickness of the spacer 50. That is, after assembling the head support arm, the urging force of the slider is measured, and when the standard value is not satisfied, the urging force of the slider can be adjusted by changing the thickness of the spacer 50.

A feature of the present invention is that even if the thickness of the spacer 50 is changed and the biasing force of the slider is changed, the position of the support arm 2 with respect to the magnetic recording medium remains unchanged and does not affect the flying characteristics of the slider. In the conventional suspension (FIG. 7), when the mounting height of the suspension is changed to change the biasing force of the slider, the suspension 10
The inclination of the second recording medium with respect to the recording medium changes. Therefore, the attitude of the slider 101 changes subtly and affects the flying characteristics of the slider.

By configuring the head support device in this way, the support arm 2 can be formed of a material having high rigidity. Therefore, in the entire region from the pivot bearing 11 to the tops 11a and 11b of the pivot bearing and the region of the support arm 2 supported by the pivot bearing 11 to the region where the slider 1 is formed, a material having high rigidity is used. A head support device can be formed.

If the support arm 2 is made of a highly rigid material in this way, the resonance frequency of the support arm 2 can be increased, so that a vibration mode, which has been a problem in the past, does not occur and a settling operation is required. Since it does not exist, the support arm 2 can be rotated and positioned at high speed, and the access speed of the magnetic recording / reproducing apparatus can be improved.

Further, since the leaf spring portion 4 which is an elastic means is not incorporated in the structure of the support arm 2 and is provided independently of the support arm 2, the thickness, the material, etc. of the leaf spring portion 4 are provided. By changing, it becomes possible to select the strength and spring constant of the leaf spring portion 4.

Further, depending on the structure when the head supporting device is used, the position of the center of gravity of the portion held by the leaf spring portion 4, for example, when the voice coil motor is used for rotation, the voice coil and the coil holder are mounted. The center of gravity of the support arm 2 in this state is the same as the intersection of the rotation axis of the support arm 2 in the radial direction of the magnetic recording medium 12 and the rotation axis of the support arm 2 in the direction perpendicular to the recording surface of the magnetic recording medium 12. That is, the support arm 2 and the tops 11a and 11 of the pivot bearing 11 are
The position is substantially the same as the midpoint P on the line connecting the points Pa and Pb with which b abuts (in FIG. 2, the distance between the point P and the point Pa and the distance between the point P and the point Pb are equal to each other. By designing the head supporting device as described above, it is possible to provide a stable head supporting device with little vibration against an external impact or the like. In this case, it is possible to provide the head support device having the highest impact resistance,
There is no practical problem with a slight deviation.

[0053] Further, as shown in FIG. 1, the slider 1
By providing the gimbal mechanism 13 directly, the gimbal mechanism 13 is provided directly on the support arm 2, and the gimbal mechanism 13 is supported via a dimple 14 formed on the lower surface of one end of the support arm 2.
It is possible to realize a flexible head support device that follows an unnecessary vibration of the slider 1 with respect to the magnetic recording medium 12 in the roll direction and the pitch direction during operation of the magnetic recording / reproducing apparatus.

As described above, in the head supporting device of the present invention, the conflicting requirements for increasing the load load on the slider 1, increasing the flexibility, and increasing the rigidity of the structure are different from each other. The functions of the elements can be independently realized, the design of the head support device can be simplified, and the degree of freedom in the design can be dramatically expanded.

Further, in the head supporting device of the present invention, the leaf spring 4 is a flat plate in the free state. Therefore, there is no need for extremely precise forming processing (bending processing) of the leaf spring portion unlike the conventional head supporting device.
The head supporting device can be manufactured more easily than in the conventional case.

Furthermore, when the slider specification is changed and the biasing force of the slider is changed, it has been necessary to change the suspension to the biasing force corresponding to the new slider, but in the present application, there is no need to change it. The advantage is that the same head support arm can be used.

Next, the operation of the head supporting device of the present invention will be described with reference to FIGS.

As described above, when the magnetic recording medium 12 is stopped, the slider 1 and the magnetic recording medium 12 are in contact and stopped, but the magnetic recording medium 12 starts to rotate during recording and reproduction. The slider 1 floats on the
Is deformed and the support arm 2 is indicated by the solid line in FIG. 1, and magnetic recording / reproduction is performed while maintaining a constant gap between the magnetic head and the magnetic recording medium 12.

In this case, the reaction force of the plate spring portion 4 that tries to return the support arm 2 to the state of the dotted line in FIG. 1 becomes the load load applied to the slider 1.

Material, thickness and pivot bearing 1 of the leaf spring portion 4
The height of the tops 11a and 11b of 1, or the support arm 2
The basic load load can be designed by the positional relationship between point G in FIG.

For example, the leaf spring portion 4 is made of a highly rigid material,
A large load can be applied by forming it thick, and the top parts 11a and 11 of the pivot bearing 11 can be applied.
A large load can be applied to the slider 1 by increasing b or by bringing the position of the joint point G between the support arm 2 and the plate spring portion 4 in FIG. 2 closer to the point P.

(Embodiment 2) Next, as a second embodiment of the present invention, a head support of a magnetic recording / reproducing apparatus of the present invention is used as a head support device for realizing the operation principle shown in the first embodiment. The structure of an apparatus is shown.

FIG. 3 is an exploded perspective view showing the structure of the head supporting device of the present invention, and FIG. 4 is assembled from the state of FIG.
1 shows a configuration of a head support device of the present invention in an injured state
FIG. 5 is an exploded perspective view, and FIG. 5 shows a head supporting device of the present invention.
It is a principal part side view.

As shown in FIGS. 3 and 4, in the head support device 9, a ring-shaped spring fixing member 5 and welding points 4a, 4b, 4c, and 4d, which are the same as the ring-shaped plate spring portion 4, are used.
Connected by. The support arm 2 and the leaf spring 4 are connected to the support arm 2 at welding points 4e, 4f, 4g, and 4h. The support arm 2 is connected to a coil holder 8 to which a voice coil 3 is attached so that the support arm 2 can be rotated in the radial direction of the magnetic recording medium 12 by a voice coil motor. These members are the pivot bearing 11, the spacer 50, the collar 26, the bearing portion 10 and the nut 27.
It is sandwiched between and.

Further, as shown in FIG. 5, the entire head supporting device 9 is axially fixed to the substrate 15 by the mounting screw 7 provided on the bearing portion 10.

The connection between the respective members will be described in more detail with reference to FIG. First, the upper surface of the plate spring portion 4 and the lower surface of the support arm 2 are connected to each other on the right side of the rotary shaft in the plane of the drawing, and the plate spring portion 4 and the spring fixing member 5 are connected to the left side of the plane of the drawing. Together with the collar portion 11 c of the pivot bearing 11 and the spacer 50, it is sandwiched between the bearing portion 10 and the nut 6. The coil holder 8 is attached to the support arm 2.

With such a structure, the leaf spring portion 4 is deformed so as to be bent in two steps in a substantially S shape as shown in FIG. 5, and the support arm 2 is elastically held. realizable.

Further, the bearing portion 10 has a built-in bearing, and the support arm 2 can be rotated in the radial direction of the magnetic recording medium to move the magnetic head provided on the lower surface of one end to a predetermined position.

Tops 11a and 11b of the pivot bearing 11
Is provided so as to be in contact with the support arm 2 on a line that is perpendicular to the axial direction of the bearing unit 10 and the longitudinal direction of the support arm 2 and that passes through the radial rotation center of the magnetic recording medium of the bearing unit 10.

Further, each top portion 11 of the pivot bearing 11
a and 11b are respectively provided at symmetrical positions with respect to the center line of the support arm 2 in the longitudinal direction, and the pair of tops 11a and 11b press the support arm 2. .

The position of the center of gravity of the portion held by the leaf spring portion 4, that is, the position of the center of gravity of the support arm 2 with the voice coil 3 and the coil holder 8 mounted is determined by the top portion of the support arm 2 and the pivot bearing 11. The position is substantially the same as the midpoint P on the line connecting the points Pa and Pb with which the points 11a and 11b come into contact (in FIG. 2, the distance between the points P and Pa and the distance between the points P and Pb are equal. L),
By designing the head support device 9, it is possible to provide a stable head support device with less vibration against an external impact or the like. In this case, it is possible to provide the head support device having the highest impact resistance, but there is no practical problem with some deviation.

Considering the weights of the slider 1 and the gimbal mechanism 13, the position of the center of gravity of the support arm 2 with the voice coil 3, the coil holder 8, the slider 1 and the gimbal mechanism 13 mounted is substantially point P. The head support device 9 may be formed so as to be at the same position.

Here, each member will be described. First, the support arm 2 is made of metal, for example, stainless steel (SUS304).
Is integrally formed with a thickness of 64 μm. An etching method or a pressing method may be used to form the support arm 2.

By using such a support arm 2, the resonance frequency of the support arm 2 is changed from the conventional frequency of about 2 kHz to 10 kHz.
Because it can be very high frequency around Hz,
It is possible to obtain a magnetic recording / reproducing device in which the rotation speed of the head supporting device and the access speed thereof are faster than those of the conventional art.

It should be noted that, in order to increase the rigidity in the longitudinal direction, in the region shown by C in FIG. 4 at the tip of the support arm 2, a bending of about 0.2 mm in height is made in the direction perpendicular to the recording surface of the magnetic recording medium. You may provide a part.

Further, as shown in FIG. 3, the slider 1 is supported by a gimbal mechanism 13 so as to be tiltable in the roll direction and the pitch direction via a dimple (not shown), and the magnetic recording medium 12 of the slider 1 is supported. A magnetic head is provided on the surface side facing to.

The spring fixing member 5 is made of metal, for example, stainless steel (SUS304) and has a thickness of 0.1 mm, and the leaf spring portion 4 is made of metal, for example, stainless steel (SUS304).
Is formed to have a thickness of 38 μm. These can be formed and processed by using an etching method or a pressing method.

The coil holder 8 is made of metal such as A.
1 or PPS (polyphenyl sulfide) to have a thickness of 0.3 mm. In the case of Al, a die casting method or a press working method can be used for forming, and in the case of PPS, a known resin molding method can be used.

Further, the connection between the respective members can be carried out by a known method such as a spot welding method, an ultrasonic welding method and a laser welding method.

In the present invention, the manufacturing method of each member or the connecting method between each member is not limited at all.

With the above-described structure, it is possible to provide the head supporting device which can embody the principle as shown in the first embodiment.

Further, by constructing the head support device 9 as described above, the support arm 2 can freely rotate in the direction perpendicular to the recording surface of the magnetic recording medium with the tops 11a and 11b of the pivot bearing 11 as fulcrums. Therefore, it is possible to perform a new operation that has never been seen before.

That is, for example, in the CSS type magnetic recording / reproducing apparatus, conventionally, the support arm 2 could not be arbitrarily moved in the vertical direction, so that the surface of the area B in FIG. Although it was necessary to prevent the slider 1 from being attracted to the magnetic recording medium 12 when stopped by forming the support arm 2 roughly, according to the head support device of the present invention, the support arm 2 is formed as shown in FIG. The support spring release pin 53 can be operated downward by the release spring 51, and the support arm 2 can be slightly separated from the magnetic recording medium 12 when the magnetic recording / reproducing apparatus is stopped. For this reason, the magnetic recording medium 12
In addition, it is possible to eliminate the retreat area of the magnetic head such as the area B.

Although the head supporting device of the magnetic recording / reproducing apparatus using the magnetic head has been described in the embodiment of the present invention, the head supporting device of the present invention is a non-contact type disk recording / reproducing apparatus, for example, The same effect is obtained when used as a head supporting device for an optical disk device, a magneto-optical disk device, or the like.

[0085]

As described above, when the head supporting device of the present invention is used, a head supporting device having high flexibility, high impact resistance, and high speed access can be applied while a sufficient load is applied to the head. A device can be provided.

Further, by using the head support device of the present invention, the support arm can be moved up and down, so that when the rotation of the recording medium is stopped, the head can be held away from the recording medium.

Further, even if the specification of the biasing force of the slider is changed, it is not necessary to change the head support mechanism. As a result, even if the model of the magnetic disk device is changed, the head support mechanism can be used in common, and the cost can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a side view showing an operation principle of a head support device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the operating principle of the head support device according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a configuration of a head support device according to a second embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a configuration of a head support device according to a second embodiment of the present invention.

FIG. 5 is a side view of a main portion near a bearing showing a configuration of a head support device according to a second embodiment of the present invention.

FIG. 6 is a plan view showing a configuration of a head supporting device of a conventional magnetic recording / reproducing apparatus and a relationship between the head supporting device and a magnetic recording medium.

FIG. 7 is a perspective view of an essential part of a portion where a magnetic head is provided in a conventional head support device.

FIG. 8 is a schematic perspective view showing a configuration of a conventional L / UL type magnetic recording / reproducing apparatus.

[Explanation of symbols]

1 slider 2 Support arm 3 voice coils 4 Leaf spring part 5 Spring fixing member 6 nuts 7 Mounting screw 8 coil holder 9 Head support device 10 Bearing part 11 Pivot bearing 11a, 11b top 11c Color part 12 Magnetic recording media 13 Gimbal mechanism 14 dimples 15 substrates 50 spacer 51 Support arm release spring 52 York 53 Support arm release pin 101 slider 102 suspension 103 leaf spring 104 support arm 105 Bearing 106 voice coil 107 magnetic recording medium 108 Head support device 109 spindle motor 110 Magnetic head holder 111 Notch 112 magnetic recording medium

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B 5/56-5/60 G11B 17/32-17/34 G11B 21/00-21/06 G11B 21 / 12-21/26

Claims (12)

(57) [Claims] 1. A support arm to which a head is attached, a bearing portion that allows the support arm to rotate in a radial direction of a recording medium, and a support arm that allows the support arm to rotate in a direction perpendicular to a recording surface. A pivot bearing having a pair of tops ; elastic means for applying a biasing force to the support arm in a direction toward the recording medium; fixing means for fixing the elastic means to the bearing portion; A head support device comprising: an adjusting unit that changes a deformation amount. 2. The head supporting device according to claim 1, wherein the elastic member and the pivot bearing are fixedly attached via the adjusting means. 3. The head supporting device according to claim 1, wherein the supporting arm is made of metal. 4. The head support device according to claim 1, wherein the elastic means is a leaf spring provided between the bearing portion and the support arm. 5. The head support device according to claim 1, wherein the elastic means is a leaf spring that connects the bearing portion and the support arm. 6. The head support device according to claim 1 , wherein the pair of top portions are perpendicular to an axial direction of the bearing portion and a longitudinal direction of the support arm, and in a radial direction of the recording medium of the bearing portion. A head support device provided so as to contact the support arm on a line passing through a center of rotation. 7. The head support device according to claim 1 , wherein each top of the pivot bearing is provided at a position symmetrical with respect to a longitudinal centerline of the support arm. apparatus. 8. The head support device according to any one of claims 1 to 7, head support device which is characterized in that it is held by the slider of the head is provided on the support arm. 9. The head support device according to claim 8 , wherein a gimbal mechanism that supports the slider in the roll direction and the pitch direction is provided on the support arm. 10. The head support device according to any one of claims 1 to 9, of the support arm, the radial rotation of the recording medium,
A head supporting device comprising a voice coil motor provided on the supporting arm. 11. The head support device according to any one of claims 1 to 10, the center of gravity of said support arm held by said resilient means, in the radial direction of the recording medium of said support arm A head support device, characterized in that it is the same as an intersection of a rotation axis and a rotation axis in a direction perpendicular to the recording surface of the recording medium. 12. The head supporting device according to claim 1 , wherein the adjusting unit adjusts the biasing force of the slider by changing the thickness of the spacer. Characteristic head support device.