JP3374846B2 - 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 floating head, for example, a magnetic disk device, an optical disk device, a magneto-optical disk device or the like.

[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 support device 108 has a voice coil 106 provided on the support arm 104 during recording and reproduction.
By the action, the magnetic head mounted on the slider 101 is positioned with respect to a desired track of the magnetic recording medium 107 by rotating about 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 CSS).
As described above, 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. Another feature is that the magnetic head floats above 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, there is a load / unload system (hereinafter referred to as L / UL system) as another system of the head supporting device.

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.

The 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 (not shown).
The other end of the suspension 102 is bent to act as a leaf spring portion 103, and the leaf spring portion 103 causes the support arm 10 to move.
4 is connected. 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 support device, the leaf spring portion is provided with the cutout 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. The design was done.

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 torsion 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 support device, its center of gravity is located closer to the magnetic head than the leaf spring portion, so that when a strong external shock or the like is applied to the magnetic recording / reproducing apparatus, the slider portion of the magnetic head 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 above-mentioned problems are not unique to the magnetic recording / reproducing apparatus, and similar problems have occurred in a disk device having a flying head, such as an optical disk device or a magneto-optical disk device.

The present invention has been made in order to solve these problems, and provides a head supporting device which is thin and has high impact resistance while having high flexibility while applying a necessary and sufficient load to the head. The purpose is to

[0025]

The head support device of the present invention SUMMARY OF THE INVENTION comprises a support arm, and a head attached to one end of the support arm, the radial support arms recording medium as a rotation about the bearing portion Is provided so as to be rotatable in a direction perpendicular to the recording surface with a pivot bearing having a pair of tops as a rotation center, and an elastic means for applying a biasing force in the recording medium direction to the support arm. It is characterized by that.

With this, since the portion having the rigid body and the portion having elasticity can be provided independently of each other, the support arm portion can be formed of the high-rigidity member when an impact is applied from the outside. Since the biasing force of the elastic means on the slider can be arbitrarily set, the shock resistance is very high and the resonance frequency thereof can be increased, so that high response characteristics and head support capable of high-speed access are provided. A device can be provided.

Further, 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.

[0028]

A head support device of the present invention comprises a support arm and a head attached to the lower surface of one end of the support arm, and the support arm uses a bearing portion as a center of rotation for radial direction of a recording medium and It is characterized in that it is provided so as to be rotatable in the direction perpendicular to the recording surface, and that the support arm is provided with elastic means for applying a biasing force in the direction of the recording medium. With this, since the portion having the rigid body and the portion having elasticity can be independently provided, the support arm portion can be formed of the high-rigidity member and the elastic means when the impact is applied from the outside. Since the pressing force on the slider can be arbitrarily set, it is possible to provide a head supporting device having extremely high impact resistance and high resonance frequency. Further, since the head supporting device is configured to be rotatable in the vertical direction, the head can be held apart 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 supporting arm, it is possible to easily provide a head supporting device having a thin structure in the 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 comes into contact with the support arm. 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.

Further, a pair of top portions provided on the pivot bearing are perpendicular to the axial direction of the bearing portion and the longitudinal direction of the support arm and form a support arm on a line passing through the radial rotation center of the recording medium of the bearing portion. By being provided so as to abut,
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.

Since the head is held by the slider provided on the support arm, it is possible to fly the head 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 slider does not need to roll in the roll or pitch direction with respect to the recording medium at the time of recording / reproducing by the recording / reproducing apparatus. The tilt can be absorbed by the gimbal mechanism.

Further, the rotation of the support arm in the radial direction of the recording medium can be performed at a higher speed because the voice coil motor provided on the support arm.

Furthermore, the position of the center of gravity of the portion held by the elastic means is the same as the intersection of the rotation axis of the support arm in the radial direction of the recording medium and the rotation axis in the direction perpendicular to the recording surface of the recording medium. With such a configuration, it is possible to minimize unnecessary vibration of the support arm when there is an external impact or the like.

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) First, as a first embodiment, 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 operating principle of the head supporting device of the present invention, and FIG. 2 is a plan view thereof.

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 portion, and the other end side portion of the leaf spring portion 4 is provided with a pivot bearing 11 via a spring fixing member 5.
(Not shown in FIG. 2).

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

Further, 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.
At the point Pb, the 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, and 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.

When the magnetic recording / reproducing apparatus is in operation, that is, when the slider 1 is floating above the magnetic recording medium 12, the load load on the slider 1 depends on each top portion 1 of the pivot bearing 11.
It is caused by the compressive stress in the direction of the magnetic recording medium 12 applied to the support arm 2 by 1a and 11b.

By configuring the head support device in this way, the support arm 2 can be made 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 as described above, 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 but is provided independently of the support arm 2, the thickness, 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 rotating by the voice coil motor, 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.

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

As described above, in the head supporting device of the present invention, the conflicting requests for a large load on the slider 1 and a high flexibility, and a high rigidity of the structure are separately constituted. 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.

Furthermore, the head supporting device of the present invention does not require a very precise forming process (bending process) of the leaf spring portion as in the conventional head supporting device, so that it is simpler than the conventional one. The head supporting device can be manufactured.

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 when 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.

This load load is determined by the material and thickness of the leaf spring portion 4, the height of the top portions 11a and 11b of the pivot bearing 11,
Alternatively, it can be changed depending on the positional relationship with the point G in FIG. 1, which is a joint between the support arm 2 and the plate spring portion 4.

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 load can be applied to the slider 1 by increasing b or by bringing the position of the joint G point between the support arm 2 and the plate spring portion 4 in FIG. 1 closer to the point P.

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

FIG. 3 is a perspective view showing the structure of the head supporting apparatus of the present invention, FIG. 4 is an exploded perspective view, and FIG. 5 is a side view of the main part near the bearing.

As shown in FIGS. 3 and 4, in the head support device 9, a substantially annular leaf spring portion 4 and a semi-annular spring fixing member 5 are connected, and the leaf spring portion 4 is attached to the support arm 2. Connected and configured. 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 pivot bearings 1
1 and 1, the bearing portion 10 and the nut 6 sandwich it.

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

The connection between the 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. The pivot bearing 11 is sandwiched by the bearing portion 10 and the nut 6 together with the collar portion 11c. The support arm 2 is attached to the coil holder 8.

With this structure, the leaf spring portion 4 is deformed so as to be bent in two stages as shown in FIG. 5, and the support arm 2 is elastically held.

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 11 of the pivot bearing 11
Each of a and 11b is provided at a position symmetrical with respect to the center line of the support arm 2 in the longitudinal direction, and the pair of tops 11a and 11b presses 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.

In consideration of 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 the support arm 2 as described above, 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. 3 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.

In FIG. 4, the slider 1 is supported by a gimbal mechanism 13 via a dimple (not shown) so as to be tiltable in the roll and pitch directions, and faces the magnetic recording medium 12 of the slider 1. A magnetic head is provided on the surface side.

The spring fixing member 5 is made of metal, for example, stainless steel (SUS304) to have 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.

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

It should be noted that the present invention does not limit the method of manufacturing each member or the method of connecting each member.

With the above configuration, the first
It is possible to provide a head support device that can embody the principle as shown in the embodiment.

Further, by constructing the head support device 9 as described above, the support arm 2 freely rotates 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. It was necessary to prevent the slider 1 from adsorbing to the magnetic recording medium 12 at the time of stop by forming it roughly, but according to the head supporting device of the present invention, the supporting arm 2 is formed by a known means.
It can be operated up and down, and when the magnetic recording / reproducing apparatus is stopped, the support arm 2 can be slightly separated from the magnetic recording medium 12. For this reason, it is possible to eliminate the need for a retreat area of the magnetic head such as the area B in the magnetic recording medium 12.

Also in the L / UL type magnetic recording / reproducing apparatus, by using the head supporting apparatus of the present invention, it is possible to operate the supporting arm 2 up and down by a known means. When the device is stopped,
The support arm 2 can be slightly separated from the magnetic recording medium 12. Therefore, it is possible to reduce the useless area of the magnetic recording medium in which the magnetic head is loaded and unloaded as in the conventional case.

In the embodiment of the present invention, the head supporting device of the magnetic recording / reproducing apparatus using the magnetic head has been described. However, the head supporting device of the present invention is a non-contact type disk recording / reproducing device, 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.

[0081]

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

[Brief description of drawings]

FIG. 1 is a side view showing the operating 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 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 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

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B 21/16-21/26 G11B 21/00-21/06 G11B 21/12-21/14

Claims (10)

(57) [Claims] 1. A a support arm, and a head attached to one end of the support arm, the support arm and a pair of top pivotable radially of the recording medium as the pivot about the bearing section A head support characterized in that it is provided so as to be rotatable in a direction perpendicular to a recording surface with a pivot bearing that is provided as a rotation center, and that the support arm is provided with an elastic means for applying a biasing force in the recording medium direction. apparatus. 2. 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. 3. The bearing portion is provided with the pivot bearing having a pair of tops so as to be in contact with the support arm. The head support device according to claim 1, wherein the support arm is provided so as to be rotatable in a direction perpendicular to the recording surface. 4. A pair of apex portions provided on the pivot bearing are perpendicular to an axial direction of the bearing portion and a longitudinal direction of the support arm, and pass through a rotation center of the bearing portion in a radial direction of the recording medium. The head support device according to claim 3, wherein the head support device is provided so as to come into contact with the support arm on a line. 5. The head support device according to claim 3, wherein each top of the pivot bearing is provided at a position symmetrical with respect to a longitudinal centerline of the support arm. . 6. The head support device according to claim 1, wherein the head is held by a slider provided on the support arm. 7. The head support device according to claim 6 , wherein a gimbal mechanism that supports the slider freely in the roll direction and the pitch direction is provided on the support arm. 8. The voice coil motor provided on the support arm rotates the support arm in a radial direction of the recording medium.
The head support device according to any one of items 1 to 7. Wherein said supporting the thus held in the elastic means
Center of gravity of the lifting arm, characterized in that it is identical to the intersection of the rotation axis in a direction perpendicular to the recording surface in the radial direction of the rotation axis and the recording medium of the recording medium of said support arm The head support device according to any one of claims 1 to 8. 10. A head support device according to any one of claims 1, characterized in that said supporting arm is formed of a high rigid member to claim 9.