JPH0660579A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To eliminate the problems of a contact, a sliding and attraction between a magnetic head slider and a magnetic disk. CONSTITUTION:The outer edge of a magnetic disk 1 is provided with a magnetic head supporting spring holding mechanism 9 (loading/unloading mechanism) having a loading/unloading member 10 for transforming the moving direction of the supporting spring into a movement having a directional component where the magnetic head slider is moved away from a magnetic disk surface. The loading/unloading member 10 is arranged on a position where it is engaged with a supporting spring 5 moved to the outer edge side of the magnetic disk 1 and it is moved in a direction where the supporting spring 5 engaged with it by the force of moving the supporting spring 5 to the outer periphery side of the magnetic disk 1 is lifted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk device, and more particularly to a magnetic disk device having a magnetic head slider load / unload mechanism for keeping a magnetic disk surface and a head slider apart from each other with a minute gap.

[0002]

2. Description of the Related Art In a magnetic disk device, a method called a contact start stop (hereinafter referred to as CSS) method, which starts and stops while a magnetic disk and a magnetic head slider are in contact with each other, has been adopted. . In this method, the magnetic disk surface and the magnetic head slider are in contact with each other when the apparatus is not operating. When the magnetic disk device is activated, the magnetic head slider is levitated by the air flow generated by the rotation of the magnetic disk, and is moved to a desired position on the magnetic disk by the magnetic head slider access mechanism to record / record information. Play. When the magnetic disk device stops, the magnetic head slider lands on the magnetic disk surface and is held in contact with the magnetic disk surface. However, in such a system, the landing of the magnetic head slider on the CSS dedicated area or recording area surface of the magnetic disk
Since levitation is performed, contact and sliding between the magnetic head slider and the magnetic disk surface cause friction and wear problems, and due to these problems, head crush (contact between the magnetic head slider and magnetic disk surface Accident (data accident due to sliding) may occur, which may lead to loss of recorded information. Further, when the starting torque of the magnetic disk drive motor of the magnetic disk device is insufficient, the attraction between the magnetic head slider and the magnetic disk may not be released due to a long stop during transportation.

Therefore, the load / unload of the magnetic disk drive for preventing the friction / wear problem or the attraction is caused.
A mechanism is being developed. As a conventional technique of this load / unload mechanism, there is a PCT application (publication number: WO 89/08).
313) and Japanese Patent Application Laid-Open No. 2-312075.

In the prior art shown in WO 89/08313, a tape-shaped load unload member is installed on the outer edge of the magnetic disk, and a supporting spring transferred to the outer edge of the magnetic disk by an actuator is used as the load spring. The magnetic head slider and the magnetic disk are separated from each other by riding on the door load member.

The prior art disclosed in Japanese Patent Laid-Open No. 212075 discloses a magnetic head slider in which a support spring having a taper-like embossed portion rides on a support spring holding member provided at the outer edge of the magnetic disk. Are separated from the magnetic disk.

However, in these methods, dust may be generated and a head crash may occur due to sliding between the support spring and the load unload member or the support spring holding member.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, an object of the present invention is to keep the magnetic head slider and the magnetic disk always separated by a simple mechanism to prevent frictional wear due to contact and sliding. By avoiding this, the magnetic head slider is prevented from being attracted to the magnetic disk, and further, the sliding between the load / unload member or the support spring holding member and the magnetic head support spring is avoided as much as possible. To improve reliability

[0008]

According to the present invention, in order to solve the above problems, a magnetic head supporting spring holding mechanism (hereinafter, referred to as
A load / unload mechanism, which is provided in a load / unload mechanism, holds a support spring, and converts the movement direction of the support spring into a movement having a component for separating the magnetic head slider and the magnetic disk from each other. The rolling motion or the rotary motion is performed so that the friction coefficient is small and the generation of wear particles is extremely small.

[0009]

In the present invention, as described above, the load / unload member is constructed so that the support spring is lifted from the surface of the magnetic desk by rolling motion or rotary motion having a small friction coefficient and very little generation of wear particles. Road Unro
It is possible to avoid the problem of sliding between the drive member and the magnetic head support spring, and to prevent the head crash due to damage of the magnetic disk or abrasion powder due to friction.

[0010]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. 1 is a schematic view showing an embodiment of a magnetic disk device to which the present invention is applied, FIG. 2 is an enlarged view of a load unload mechanism, and FIG. 3 is a position of a support spring 5 on a magnetic disk 1 and a load unload mechanism. It is a cross-sectional schematic diagram which shows the related position of the drive mechanism.

In FIG. 1, the magnetic head slider 3 is attached to a support spring 5 via a gimbal spring 4, and the support spring is attached to a guide arm 6. The guide arm 6 is rotatably driven by the actuator 8 about the rotary shaft 7, and moves the magnetic head slider 3 to a desired position on the magnetic disk surface.

The rotating shaft 7, the guide arm 6 rotatably arranged around the rotating shaft 7, the support spring 5 attached to the guide arm 6, and the guide arm 6 are connected to the rotating shaft 7. The head access mechanism 2 is configured to include an actuator 8 that rotates about 7.

Then, as shown in FIG. 3, the load / unload mechanism 9 is arranged close to the outer edge of the magnetic disk 1 so as not to interfere with the rotating magnetic disk 1. As shown in FIG. 2, the loading / unloading mechanism 9 includes a support member 13 fixed to a movable portion of the head access mechanism of the magnetic disk device and a portion other than the magnetic disk 1, and a magnetic member of the support member 13. A stopper 11 for sandwiching a plate-shaped rotary elastic body 12 which is disposed at a predetermined distance from the disk side end portion and extends to the magnetic disk side end portion of the support member 13 between the support member 13 and the support member 13. , And a load / unload member 10 fixed to the end of the rotating elastic body 12 on the magnetic disk side. The rotary elastic body 12 is arranged on both sides of the support member 13, and therefore the stopper 11 and the load / unload member 10 are also arranged on both sides of the support member 13, respectively.

The load / unload member 10 holds the support spring 5 and moves away from the magnetic disk 1 when the magnetic head slider 3 has finished accessing the magnetic disk 1 and retracted from the data area. By rolling, the support spring and the magnetic head slider 3 attached to the support spring operate so as to be separated from the surface of the magnetic disk 1. The rotating elastic body 12 connects the load / unload member 10 and the supporting member 13 and is deformed when the load / unload member 10 rotates, and the magnetic head slider 3 is placed on the surface of the magnetic disk 1. When returning, the load / unload member 10 is in its original position (standby position).
Generates a restoring force that returns to. The stopper 11 is
The support member 13 is arranged at a predetermined distance from the end of the supporting member 13 on the side of the magnetic disk. The length of the deformed portion of the rotary elastic body 12 is defined by the predetermined distance, and the load / unload member 10 rolls. It is designed to limit the distance (or rolling angle).

The device having the above configuration operates as follows. First, when the magnetic head does not access the magnetic disk, the guide arm 6 is rotated by the head access mechanism 2 in the direction from the center of the magnetic disk 1 toward the outer edge, and the magnetic head slider 3 moves to the data area of the magnetic disk 1. Transferred outside. When the magnetic head slider 3 is moved to the outside of the data area of the magnetic disk 1, first, the support spring 5
Is supported by a load / unload member 10 at the standby position of a load / unload mechanism 9 installed on the outer edge of the magnetic disk 1. The guide arm 6 is further rotated, and the rotation force causes the load / unload member 10 to roll in the direction from the center of the magnetic disk 1 to the outer edge while supporting the support spring 5. The support spring 5 is lifted by this rolling, and the magnetic head slider 3 is separated from the surface of the magnetic disk 1. Finally Road Unro
The drive member 10 stops rolling on the stopper 11, and the magnetic head slider 3 is held in a state of being separated from the surface of the magnetic disk 1.

The above operation will be described in detail with reference to FIGS. The load / unload mechanism 9 is installed on the outer edge of the magnetic disk 1 as shown in FIG. 3, and is arranged so as not to interfere with the rotating magnetic disk 1.
When the magnetic head slider 3 does not record or reproduce data on or from the magnetic disk 1, the head access mechanism 2 moves the magnetic head slider 3 to the outside of the data area as indicated by arrow A. The position of the load / unload member 10 in FIG. 3 is the standby position, and is in this position when the load / unload member 10 is not engaged with the support spring 5.

As shown in FIG. 3, a recess is provided at a position of the supporting spring 5 which comes into contact with the load / unload member 10, and when the guide arm 6 moves in the direction of arrow A, the recess of the supporting spring 5 is formed. The corners of the load / unload member 10 are inserted into the parts (FIG. 4). Further, when the magnetic head slider 3 is about to be transferred to the outer peripheral side by the head access mechanism as shown by the arrow B, the load / unload member 10 keeps contact with the support spring 5 as shown in FIG. Rolls while bending the rotating elastic body. A surface of the load-unload member 10 that is in contact with the rotary elastic body 12 is formed in an arc shape, and the rotary elastic body 12 rolls while rolling around the surface. The portion is formed at a position behind the center of rotation of rolling in the rolling direction at the time of starting rolling. For this reason,
The corners of the support member 1 are rotated while the support member 1 is rolling.
3, the support spring 5 is supported and lifted by the corners, and the magnetic head slider 3 and the surface of the magnetic disk 1 are separated from each other.

When the magnetic head slider 3 and the magnetic disk 1 are separated from each other, a retract spring (not shown) is attached to the guide arm 6 and applies a force to pull the support spring 5 in the outer peripheral direction of the magnetic disk 1. The force, the pressing force of the support spring 5, and the restoring force of the rotary elastic body 12 are balanced and held. Alternatively, a lock mechanism (not shown) may be provided on the actuator to keep the magnetic head slider 3 and the magnetic disk 1 separated from each other. When the magnetic head slider 3 returns to the magnetic disk 1, the reverse operation of the above sequence is performed. That is, a force in the direction opposite to the arrow B in FIG. 4 acts on the support spring 5 from the head access mechanism, the balance of the force maintaining the separated state is lost, and the magnetic head slider 3 moves to the data area side of the magnetic disk. Along with
The support spring 5 is disengaged from the corner of the load / unload member 10 and the distance between the magnetic head slider 3 and the surface of the magnetic disk is narrowed to the data read / write interval.

(Embodiment 2) FIGS. 6 to 8 are views showing a second embodiment of the present invention. This embodiment is different from the first embodiment in that it has a recess for holding the support spring 5 in place of the load / unload member 10 in the first embodiment, and has a rotary elastic body 12 and a stopper. A load / unload member 14 in which the surfaces in contact with 11 are each formed of a flat surface.
Is provided, and the support spring 5 is loaded and unloaded.
That there is no recess that engages the guide member 14.

The loading / unloading mechanism 9 is installed on the outer edge of the magnetic disk 1 as shown in FIG. 6, and is arranged so as not to interfere with the rotating magnetic disk 1. When the magnetic head slider does not record or reproduce data on or from the magnetic disk 1, the magnetic head slider is moved to the outside of the data area by the head access mechanism as shown by an arrow A, as shown in FIG. The support spring 5 is stored in the recess of the load / unload member 14. Furthermore, arrow B
When the magnetic head slider is transferred to the outer peripheral side of the magnetic disk 1 by the head access mechanism as shown in FIG.
As shown in FIG.
While holding, the support spring 5 is lifted by rotating to separate the magnetic head slider from the magnetic disk 1. In addition, the load / unload member 14 is the rotating elastic body 1.
The strain energy is stored in the rotary elastic body 12 by the rotation of the load / unload member 14. The strain energy becomes the restoring force of the load / unload member 14, and after the magnetic head slider returns to the state of accessing the magnetic disk 1, the load / unload member 14 is returned.
Automatically returns to the original position (the position where rolling started).

When the magnetic head slider and the magnetic disk 1 are separated from each other, for example, the spring force of a retract spring (not shown) that gives a force for pulling the support spring 5 in the direction of arrow B and the pressing force of the support spring 5. , And the restoring force of the rotary elastic body 12 is balanced and held. Alternatively, the actuator may be provided with a lock mechanism (not shown) to keep the magnetic head slider and the magnetic disk 1 separated from each other.

(Embodiment 3) FIGS. 9 to 11 are views showing a third embodiment of the present invention. The load / unload mechanism 9 in this embodiment is different from the movable portion of the head access mechanism 2 and the magnetic disk 1. Of the support member 15 and a load shaft 15A rotatably arranged around a rotary shaft 15A fixed to the end of the support member 15 on the magnetic disk 1 side.
The support spring 5 is provided with a recessed portion which engages with the load / unload member 16 as in the case of the first embodiment. The portion of the load-unload member 16 that engages with the recess of the support spring 5 forms a corner, and the load-unload member 16 does not rotate beyond a predetermined angle by a stopper (not shown). It is like this.

The load / unload mechanism is installed on the outer edge of the magnetic disk 1 as shown in FIG. 9, and is arranged so as not to interfere with the rotating magnetic disk 1. When the magnetic head slider does not record or reproduce data on or from the magnetic disk 1, the magnetic head slider is moved to the outside of the data area by the head access mechanism as shown by an arrow A, as shown in FIG. The corners of the load / unload member 16 are inserted into the recesses of the support spring 5. When the support spring 5 is further moved to the outer peripheral side of the magnetic disk 1 by the head access mechanism as shown by the arrow B, the load / unload member 16 is shown while holding the support spring 5 as shown in FIG. Rotating shaft 1
5A is rotated, the support spring 5 is lifted by the rotation, and the magnetic head slider and the magnetic disk 1 are separated from each other.

The state in which the magnetic head slider and the magnetic disk 1 are separated from each other is, for example, a spring force of a retract spring (not shown) which is attached to a guide arm and gives a force for pulling the support spring in the outer peripheral direction of the magnetic disk 1. And the pressing force of the support spring 5 and the restoring force of the elastic body are balanced and held. Alternatively, the actuator may be provided with a lock mechanism (not shown) to keep the magnetic head slider and the magnetic disk 1 separated from each other. When the magnetic head slider returns to the data area of the magnetic disk 1, the reverse operation of the above sequence is performed.

(Embodiment 4) FIGS. 12 to 14 show a fourth embodiment of the present invention.
An example of is shown. In this embodiment, the load / unload member 1
0 is a shape having a function of keeping the state where the magnetic head slider and the magnetic disk 1 are separated by the support spring 5 being lifted by the load / unload member. The loading / unloading member 10 in this embodiment is the supporting spring 5
In a state where it is not engaged with, the lower vertex (vertical center of rolling) is in the shape of an approximately inverted triangle in contact with the rotating elastic body 12, and the bottom edge on the upper left side in the figure A corner portion that engages with the recess of the support spring 5 is formed in the. The corner of the stopper 11 that defines the rolling limit of the load / unload member 10 is located closer to the stopper than the center line parallel to the line perpendicular to the surface of the magnetic disk 1 that is erected at the apex. After loading, the loading / unloading member 10 is configured to stop rolling.

That is, the load / unload member 10 is
When rotating in the clockwise direction in the drawing around the apex in contact with the rotating elastic body 12, the corners first move away from the surface of the magnetic disk 1, and the magnetic disk 1 at the position of the center line. The maximum distance from the surface of. The load / unload member 10 further rolls, and the distance between the corner and the surface of the magnetic disk 1 starts to decrease. When the interval becomes smaller than the maximum interval by a predetermined value, the load / unload member 10 hits the stopper 11 and the rolling is stopped.

The load / unload member 10 of this embodiment operates as follows. When the magnetic head slider does not record / reproduce data on / from the magnetic disk 1, the magnetic head slider is moved in the direction of arrow A in FIG. 12 by the head access mechanism, and the corners of the load / unload member 10 are moved. ,
It is inserted into the recess of the support spring 5. Further, as shown by arrow B, when the magnetic head slider is about to be transferred to the outer peripheral side of the magnetic disk 1 by the head access mechanism,
As shown in FIGS. 13 to 14, the load / unload member 10
Supports the support spring 5 and rolls around the lower vertex of the inverted triangle to lift the support spring 5 and separate the magnetic head slider from the magnetic disk 1. However, when the rolling of the load / unload member 10 progresses, the distance between the magnetic head slider and the magnetic disk 1 which has once separated and reached the maximum value starts to decrease, and decreases from the maximum value by a predetermined amount. Then, the rolling is stopped by the stopper 11. However, even at this stage, the value is larger than the gap between the magnetic head slider and the magnetic disk 1 at the stage where the corner is engaged with the recess of the support spring 5, and there is no risk of sliding or head crash. .

At this time, the rotational mode generated by the pressing load of the support spring 5 acting on the load / unload member 10.
Since the direction of the ment force is reversed during the initial operation and the final operation of the load / unload mechanism, the state of FIG. 14 is maintained and the magnetic head slider and the magnetic disk 1 are separated from each other. Held in a state. That is,
In order to change the state of FIG. 14 to the state of FIG. 13, it is necessary to push up the support spring 5 once, and if the restoring force of the rotary elastic body 12 is set to be less than that, the state of FIG. 14 is maintained. Further, by changing the inclination angle of the taper portion of the stopper 11, the separation distance between the magnetic head slider and the magnetic disk 1 can be adjusted.

(Embodiment 5) FIG. 15 shows a fifth embodiment of the present invention. The first to fourth embodiments described so far are provided with the load / unload mechanism 9 which operates when the magnetic head slider 3 is moved outside the data area on the outer peripheral side of the magnetic disk 1. However, the present embodiment is a magnetic disk device having a load / unload mechanism 9 which operates when the magnetic head slider 3 is moved to the outside of the data area on the inner circumference side of the magnetic disk 1.

The magnetic disk device of this embodiment is fixed to the movable part of the head access mechanism 2 and a part other than the magnetic disk 1 so that the movable part of the head access mechanism 2 and the surface of the magnetic disk 1 do not interfere with each other. The support structure member 18 disposed on the base and a roller supported by the support structure member 18.
A loading / unloading mechanism 9 is provided. The load unloader
The drive mechanism 9 is arranged at a position which operates when the magnetic head slider 3 is moved to the outside of the data area on the inner peripheral side of the magnetic disk 1.

When the magnetic head slider 3 does not record or reproduce data on or from the magnetic disk 1, if the magnetic head slider 3 is moved to the outside of the data area on the inner peripheral side by the head access mechanism, -The unloaded mechanism 9 rolls or rotates while holding the support spring 5,
The support spring 5 is lifted to separate the magnetic head slider 3 from the magnetic disk 1. The load / unload mechanism 9 is
Any one of those described in the first to fourth embodiments is used.

(Embodiment 6) FIG. 16 shows a sixth embodiment of the present invention. In the present embodiment, the present invention is applied to a magnetic disk device of a linear type in which a head access mechanism for moving the magnetic head slider 3 to an arbitrary position on the surface of the magnetic disk 1 linearly operates. In the present embodiment, an actuator 19 that is linearly moved in a direction that is substantially perpendicular to the operation direction of the head access mechanism 2 that is linearly operated is arranged. When the load / unload mechanism 9 is reciprocally driven by the actuator 19 in the direction indicated by the arrow A in FIG. 16, the head access mechanism 2 transfers the magnetic head slider 3 out of the data area of the magnetic disk 1. The support spring 5 of the head access mechanism 2 and the load / unload member 10 are arranged to engage with each other. Low
The door unload mechanism 9 itself has the same structure as that described in the above embodiments.

In the apparatus having the above structure, when the magnetic head slider 3 does not record / reproduce data on / from the magnetic disk 1, the magnetic head slider 3 moves outside the data area on the outer peripheral side of the magnetic disk 1 by the head access mechanism. Be transferred to. As the transfer of the magnetic head slider 3 is completed, the load unload mechanism 9 supported by the actuator 19 which moves linearly moves, and the load unload mechanism in the load unload mechanism 9 is moved. The supporting member 5 is lifted to separate the magnetic disk 1 from the magnetic head slider 3 by rolling or rotating the support member 5 while keeping contact with the support spring 5 holding the magnetic head slider 3. In each of the embodiments described above, the supporting spring moves and abuts against the stopped load / unload member, but in the present embodiment, the load / unload load is applied to the stopped supporting spring. The member moves and abuts to lift the support spring.

The load / unload mechanism 9 and the actuator 19 are constructed so as not to interfere with the magnetic disk 1 and the head access mechanism when the magnetic head slider 3 does not record or reproduce data. The data recording / reproducing operation of the magnetic head slider 3 is not affected at all.

(Embodiment 7) FIG. 17 is a diagram showing a seventh embodiment of the present invention. This embodiment, like the sixth embodiment, is a linear type magnetic disk device in which a head access mechanism, which is a moving body for moving the magnetic head slider 3 to an arbitrary position on the surface of the magnetic disk 1, is linearly operated. The present invention is applied.

In this embodiment, an actuator 21 that rotates and a support arm 20 that is rotationally driven by the actuator 21 are arranged adjacent to the linear type head access mechanism, and the support arm 20 has a roller at the tip thereof. −
The door loading mechanism 9 is mounted. In the sixth embodiment, the load / unload mechanism 9 linearly moves with respect to the head access mechanism 6, but in the present embodiment, the load / unload mechanism 9 is moved relative to the head access mechanism. It is configured to move forward and backward while drawing an arc centered on the actuator 21. The load / unload mechanism 9 itself has the same structure as that described in each of the above embodiments.

When the magnetic head slider 3 does not record or reproduce data on or from the magnetic disk 1, the magnetic head slider 3 is linearly moved out of the data area on the outer peripheral side of the magnetic disk 1 by the head access mechanism. To be done. At this time, the loading / unloading mechanism 9 supported by the rotating armature 21 via the supporting arm 20 moves, and the loading / unloading member rolls or keeps contact with the supporting spring 5. By rotating, the support spring 5 is lifted to separate the magnetic head slider 3 from the magnetic disk 1.

Load unload mechanism 9, support arm 20
The actuator 21 is constructed so as not to interfere with the magnetic disk 1 and the head access mechanism when the magnetic head slider 3 does not record or reproduce data. It has no effect on the recording / reproducing operation. In addition, the magnetic head slider 3
When recording / reproducing data, the load / unload mechanism 9 retracts to a position away from the head access mechanism and has no influence on the recording / reproducing operation of data of the magnetic head slider 3. .

In the sixth and seventh embodiments, with respect to the head access mechanism for linear movement, the loading / unloading mechanism 9 advances and retreats in a direction substantially perpendicular to the direction of the linear movement. The load / unload mechanism is operated by the load / unload mechanism, as shown in FIG.
It is arranged below the head access mechanism (on the side of the magnetic disk) that moves linearly in the direction of arrow A, and when the magnetic head slider 3 reaches the outside of the data area of the magnetic disk 1, the support spring 5 is loaded and unloaded. The contact member 10 may be contacted and lifted.

(Embodiment 8) FIG. 18 shows an eighth embodiment of the present invention. In this embodiment, the magnetic head slider 3
The present invention is applied to a magnetic disk device of a linear type in which a head access mechanism, which is a moving body for moving the magnetic disk 1 to an arbitrary position on the surface of the magnetic disk 1, moves linearly.
It is a modification of the seventh embodiment. This embodiment is the seventh
6 is different from that of the seventh embodiment in that instead of the actuator 21 in the seventh embodiment, the follower 23 fixed to the support arm 20 and the follower 23 fixed to the guide arm 6 of the head access mechanism are engaged. The cam 22 is provided, and the support arm 20 and the follower 23 are configured to be rotatable around the rotation shaft 21A. The support arm 20 is biased in the clockwise direction in the figure by a spring (not shown), and is stopped from moving in the clockwise direction above the predetermined position by a stopper (not shown) that is also placed in the predetermined position. ing.

When the magnetic head slider 3 does not record or reproduce data on or from the magnetic disk 1, the magnetic head slider 3 is transferred to the outside of the data area on the outer peripheral side of the magnetic disk 1 by the head access mechanism. At this time, the cam 22 attached to the guide arm 6 which moves linearly as indicated by the arrow A, and the follower 23 fixed to the support arm 20 to which the load / unload mechanism 9 is attached. When they come into contact with each other, the follower 23 is pushed by the cam 22 and rotates around the rotary shaft 21A. By this rotation operation, the support arm 20 rotates about the rotation shaft 21A as a rotation center as shown by the arrow B, and the load / unload mechanism 9 is brought into contact with the support spring 5. The support arm 20 further rotates, and the load unloaded member and the support spring 5 roll or rotate while maintaining contact with each other, thereby lifting the support spring 5.
The magnetic head slider 3 and the magnetic disk 1 are separated from each other.

In the present embodiment, the movement of the support spring and the movement of the load / unload mechanism 9 are related to each other,
Since the load / unload mechanism 9 automatically moves to the operating position in accordance with the movement of the head access mechanism, there is no fear that the load / unload mechanism 9 will not operate due to a failure of the actuator.

(Embodiment 9) FIGS. 19 and 20 show a ninth embodiment of the present invention.
It is a figure which shows the Example of. This embodiment is an example in which the present invention is applied to a magnetic disk device having one or more magnetic disks 1. This embodiment is applicable even if the radius of the magnetic disks 1 is 3.5 inches or less and the distance d between the magnetic disks 1 is 2 mm or less.

The loading / unloading mechanism 9 shown in the figure has a supporting member 18A arranged facing the outer peripheral portions of a plurality of magnetic disks 1 having recording surfaces on the upper and lower sides, and the supporting member 18A.
The support member 13 is disposed at a position facing the outer peripheral edge of each magnetic disk, and the load / unload member 10 and the stopper 11 are disposed on both upper and lower surfaces of the support member 13. Details of the configuration of the load / unload mechanism 9 are the same as those described in FIG.

When the magnetic head slider does not record or reproduce data on or from the magnetic disk 1, the supporting spring 5 is moved to the outer peripheral side of the magnetic disk 1 from the state shown in FIG. The guide member 10 is inserted into the recess of the support spring 5. Further, when the magnetic head slider is moved to the outer peripheral side of the magnetic disk 1 by the head access mechanism, the loading / unloading member 10 rolls while holding the support spring 5, thereby lifting the support spring 5 and causing the magnetic force. The head slider and the magnetic disk 1 are separated from each other. At this time, the direction of the rotational moment force acting on the load / unload member 10 by the pressing load of the support spring 5 is configured to be reversed between the initial operating position and the final operating position of the load / unload mechanism. Therefore, even if the head access mechanism loses the force to move the support spring 5 to the outer peripheral side of the magnetic disk 1, the state of FIG. 20 is maintained and the magnetic head slider maintains the state of being separated from the magnetic disk 1. To do. Further, by changing the inclination angle of the taper portion of the stopper 11, the distance between the magnetic head slider 3 and the magnetic disk 1 can be adjusted.

[0046]

According to the present invention, when the magnetic head slider is moved to the outside of the data area of the magnetic disk, the load / unload member rolls while supporting the support spring, and the load / unload member supports along with the rolling. Since the spring is lifted to separate the magnetic head slider and the magnetic disk from each other, frictional wear due to contact and sliding between the magnetic head slider and the magnetic disk is avoided, and adsorption between the magnetic head slider and the magnetic disk is prevented. Further, it becomes possible to avoid the sliding between the load unload member or the support spring holding member and the support spring, which has the effect of improving the reliability of the magnetic disk device.

[Brief description of drawings]

FIG. 1 is a schematic layout diagram showing a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing the concept of the load / unload mechanism of the embodiment shown in FIG.

FIG. 3 is a schematic sectional view showing a first stage in an operating state of the embodiment shown in FIG.

FIG. 4 is a schematic cross-sectional view showing a stage where the supporting spring and the load / unload member are in contact with each other in the operating state of the embodiment shown in FIG.

5 is a schematic sectional view showing the final stage of the operating state of the embodiment shown in FIG.

FIG. 6 is a schematic sectional view showing a first stage of the operating state of the second embodiment of the present invention.

FIG. 7 is a schematic sectional view showing a stage in which the supporting spring and the load / unload member are in contact with each other in the operating state of the embodiment shown in FIG.

8 is a schematic sectional view showing the final stage of the operating state of the embodiment shown in FIG.

FIG. 9 is a schematic sectional view showing the first stage of the operating state of the third embodiment of the present invention.

10 is a schematic sectional view showing a stage in which the supporting spring and the load / unload member are in contact with each other in the operating state of the embodiment shown in FIG.

FIG. 11 is a schematic cross-sectional view showing the final stage of the operating state of the embodiment shown in FIG.

FIG. 12 is a schematic sectional view showing a first stage of the operating state of the fourth embodiment of the present invention.

13 is a schematic sectional view showing a stage where the supporting spring and the load / unload member are in contact with each other in the operating state of the embodiment shown in FIG.

14 is a schematic sectional view showing the final stage of the operating state of the embodiment shown in FIG.

FIG. 15 is a schematic layout diagram showing a fifth embodiment of the present invention.

FIG. 16 is a schematic layout diagram showing a sixth embodiment of the present invention.

FIG. 17 is a schematic layout diagram showing a seventh embodiment of the present invention.

FIG. 18 is a schematic layout diagram showing an eighth embodiment of the present invention.

FIG. 19 is a schematic sectional view showing a schematic arrangement of a ninth embodiment of the present invention.

20 is a schematic sectional view showing an operating state of the embodiment shown in FIG.

[Explanation of symbols]

 1 magnetic disk 2 head access mechanism 3 magnetic head slider 4 gimbal spring 5 support spring 6 guide arm 7 rotary shaft 8 actuator 9 load unload mechanism 10 load unload member 11 stopper 12 rotary elastic body 13 support Member 14 Load unloaded member 15 Support member 15A Rotating shaft 16 Load unloaded member 18, 18A Support member 19 Actuator 20 Support arm 21 Actuator 21A Rotating shaft 22 Cam 23 Follower

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Mori Inventor Kenji Mori 502 Jinritsucho, Tsuchiura City, Ibaraki Prefecture Hiritsu Seisakusho Co., Ltd.

Claims (8)

[Claims] 1. A magnetic head slider, a support spring for supporting the magnetic head slider, and a moving body for mounting the support spring and moving the magnetic head slider to an arbitrary position on the surface of a magnetic disk through the support spring. In a magnetic disk device comprising a load / unload mechanism for separating the support spring from the surface of the magnetic disk when the support spring moves to a predetermined position, the load / unload mechanism has the predetermined position. A magnetic disk device comprising a load / unload member that rolls or rotates from a standby position to separate the support spring from the surface of the magnetic disk while maintaining contact with the support spring that has moved. 2. A load / unload mechanism that rolls or rotates from a standby position while maintaining contact with a support spring.
A door unload member, a stopper for stopping the rolling or rotation of the load unload member, and a load unload member attached to the load unload member in a direction for returning the load unload member to the standby position. The magnetic disk device according to claim 1, wherein the magnetic disk device is configured to include a rotating elastic body that urges and a support member that supports the rotating elastic body. 3. The load / unload mechanism is installed on the inner peripheral side of the magnetic disk.
The magnetic disk device according to 1. 4. The load / unload mechanism is installed on the outer peripheral side of the magnetic disk.
The magnetic disk device according to 1. 5. The magnetic disk drive according to claim 1, wherein the support spring is provided with a recessed portion that fits with the load / unload member. 6. A magnetic disk drive according to claim 1, wherein the load / unload member is provided with a recess for holding the support spring. 7. The magnetic disk drive according to claim 1, wherein the load / unload member is rolled or rotated by a link mechanism. 8. A structure in which the direction of the rotational moment force acting on the load / unload member by the pressing load of the support spring is reversed between the initial operation and the final operation of the load / unload mechanism. The magnetic disk drive according to claim 1, wherein the magnetic disk drive is a magnetic disk drive.