JP2001195852A - Magnetic disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a slider posture optimal during loading and retreating. SOLUTION: This magnetic disk device is provided with a raising/lowering member 10 provided in close proximity to a part of the surface of a magnetic disk 1, and adapted to retreat and retain a slider 3 outside more than the outer peripheral edge of the magnetic disk 1. The raising/lowering member 10 is provided with a first slope 10a engaged with a load beam 5 so as to gradually separate the slider 3 from the surface of the magnetic disk 1 and retain it, and a second slope 10b engaged with the load beam 5 so as to gradually bring the slider 3 close to the surface of the magnetic disk 1 and load it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a magnetic disk drive used as an external storage device of a computer.

[0002]

2. Description of the Related Art In a magnetic disk drive, a non-contact type slider equipped with a magnetic head is generally used to avoid damage to a magnetic disk as a recording medium, and a floating type slider is generally used. The slider is attached, for example, to a flexure attached to an actuator via gimbal spilling, and a pressing force of a flexure that urges the slider against the magnetic disk surface, and a levitation force due to an air flow generated by rotation of the magnetic disk. The minute flying height is obtained by the balance of

In such a magnetic disk device, a system called a contact start / stop (CSS) system, which starts and stops while a magnetic disk and a magnetic head are in contact with each other, is adopted. In this method, the magnetic head is always on standby with the magnetic head in contact with the magnetic disk. When the apparatus is started, the magnetic disk rotates, and the magnetic head lands at that point due to the airflow accompanying this rotation.
It is maintained in contact with the magnetic disk.

However, in such a system, the slider and the magnetic disk are worn due to contact, and the slider and the magnetic disk violently collide with each other due to an external impact, thereby causing great damage to the slider and the magnetic disk. There was a problem of giving.

As a method of avoiding this problem, a method of moving the slider to the outside of the magnetic disk when not operating has conventionally been proposed. As an example, see Japanese Patent Application Laid-Open No. Hei 8-16184.
There is one described in Japanese Patent Publication No.

[0006]

In the conventional magnetic disk drive, the inclined surface of the lifting member with which the end of the load beam engages is the same when the slider is mounted on the magnetic disk and when the slider is retracted from the magnetic disk. is there. Therefore, the inclined surface of the elevating member is designed so that mounting and retreat can be performed smoothly while avoiding contact between the slider and the magnetic disk during both mounting and retreating.

However, in practice, the optimum shape of the inclined surface at the time of mounting and at the time of evacuation is different, and it is impossible to design an optimum design for both. Therefore, the phenomenon that the slider and the magnetic disk come into contact with each other at the time of mounting and retreat cannot be completely eliminated.

In particular, in recent sliders utilizing negative pressure, since the negative pressure of the slider exerts a force that prevents the slider from separating from the magnetic disk during retraction, how to release the negative pressure by controlling the slider attitude Is becoming important.

An object of the present invention is to improve the reliability of a magnetic disk drive.

Another object of the present invention is to reduce a phenomenon in which a slider comes into contact with a magnetic disk.

It is still another object of the present invention to keep the slider posture at the time of mounting and retreating optimally.

[0012]

According to the present invention, there is provided an actuator arm pivotable about an axis, a load beam mounted on an end of the actuator arm, and a slider provided on the load beam. A magnetic head provided on the slider for recording and reproducing information on and from a magnetic disk, wherein the actuator arm is pivoted substantially radially with respect to the surface of the magnetic disk to move the magnetic head to a predetermined position. The magnetic disk device further comprises an elevating member which is provided near a part of the surface of the magnetic disk and retracts and anchors the slider outside an outer peripheral edge of the magnetic disk, wherein the elevating member is Loading the slider so as to anchor the slider gradually away from the surface of the magnetic disk. A first inclined surface for engaging with the load beam, and a second inclined surface for engaging with the load beam so as to mount the slider gradually closer to the surface of the magnetic disk. The above object is achieved.

[0013] The magnetic disk drive may further include an elevating member driving mechanism for driving the elevating member in a plane substantially parallel to the surface of the magnetic disk. When retracting from the magnetic disk, the first inclined surface engages with the load beam, and when the slider is mounted on the magnetic disk, the first inclined surface is moved up and down so that the second inclined surface engages with the load beam. The member may be driven.

The inclination angle of the first inclined surface with respect to the surface of the magnetic disk may be larger than the inclination angle of the second inclined surface with respect to the surface of the magnetic disk.

[0015] The lifting member drive mechanism may include a rotation drive mechanism.

[0016] The lifting member driving mechanism may include a linear driving mechanism.

The magnetic disk drive includes an axis substantially rotatably supporting the elevating member and being substantially parallel to a rotation axis of the magnetic disk; a spring member for urging the elevating member in one direction; A detent pin for restricting rotation of the member may be further provided, and the elevating member may further include a cam surface which engages with the load beam so as to rotate the elevating member.

When the slider is retracted from the magnetic disk, the first inclined surface moves the load / unload member.
The second inclined surface may rotate so as to engage with the load beam and engage with the load beam when the slider is mounted on the magnetic disk.

The elevating member includes the first and second members.
An elastic portion provided so as to allow the relative position of the inclined surface with respect to the magnetic disk to be movable; and a relative position of the first and second inclined surfaces with respect to the magnetic disk moved by elastic displacement of the elastic portion. A cam surface for engaging the load beam.

When the slider is retracted from the magnetic disk, the first inclined surface engages with the load beam, and when the slider is mounted on the magnetic disk, the second inclined surface is fixed to the second inclined surface. It may be elastically deformed to engage with the load beam.

[0021] The load beam may have an end engaged with the first and second inclined surfaces.

According to another magnetic disk drive of the present invention, there is provided an actuator arm rotatable around an axis, a load beam mounted on an end of the actuator arm, and a slider provided on the load beam. And a magnetic head provided on the slider for recording / reproducing information on / from a magnetic disk, wherein the actuator arm is rotated substantially in a radial direction with respect to the surface of the magnetic disk to set the magnetic head to a predetermined position. A magnetic disk drive positioned at a position, further comprising an elevating member provided in proximity to a part of the surface of the magnetic disk for retracting and mooring the slider outside an outer peripheral edge of the magnetic disk; Is so that the slider is moored gradually away from the surface of the magnetic disk. A ramp that engages with the load beam so as to mount the slider gradually closer to the surface of the magnetic disk and mounts the slider. And the load beam has a longitudinal central axis, and the end is disposed on an outer peripheral side of the magnetic disk with respect to the central axis, whereby Objective is achieved.

Still another magnetic disk drive according to the present invention includes an actuator arm pivotable about an axis;
A load device attached to the end of the actuator arm
A beam, a slider provided on the load beam, and a magnetic head provided on the slider for recording and reproducing information on and from a magnetic disk, wherein the actuator arm has a substantially radius with respect to a surface of the magnetic disk. A magnetic disk device for positioning the magnetic head at a predetermined position by rotating the magnetic head in a direction, wherein the slider is provided close to a part of the surface of the magnetic disk and the slider is located outside an outer peripheral edge of the magnetic disk. A lifting and lowering member for retracting and mooring, the lifting and lowering member being engaged with the load beam so as to moor the slider gradually away from the surface of the magnetic disk, and to move the slider to the magnetic disk. A ramp engaging the load beam for mounting gradually closer to a surface; The material is rotatably supported on an axis substantially parallel to the rotation axis of the magnetic disk, and the elevating member moves the slider on the magnetic disk in a direction in which the slider is mounted on the magnetic disk by an air flow generated by rotation of the magnetic disk. The above-described object is achieved by including a turning power generating unit that generates a force for rotating the elevating member.

According to one aspect of the present invention, it is possible to avoid contact between the slider and the magnetic disk and to improve the reliability of the magnetic disk device.

[0025]

(Embodiment 1) FIG. 1 shows Embodiment 1 according to the present invention. The magnetic disk 1
Attached to and concentric with a hub (not shown), the hub is rotatably supported on a shaft (not shown). The shaft is part of a motor (not shown). Generally, the shaft is fixed with respect to the base plate 2 and the hub is mounted on a rotatable member of a motor (not shown).

In order to read data from or write data to the magnetic disk 1, a slider 3 incorporating a magnetic read / write head (not shown) is arranged on the magnetic disk 1. The slider 3 is supported by an actuator arm 4 and a load beam 5 in a state close to the magnetic disk 1.

The load beam 5 is an elastic material, and the slider 3 and the magnetic disk 1 are separated from each other by a thin air film drawn below the slider 3 by the rotation of the magnetic disk 1 by applying a spring force to the slider 3.

This air film causes the slider 3 to fly to a slight height (several tens of nm) above the surface of the magnetic disk 1 in a hydrodynamic manner. This prevents the slider 3 from colliding or contacting the magnetic disk 1 while the magnetic disk 1 is rotating.

However, at the same time, the slider 3 approaches the magnetic disk 1 so that data can be read from or written to the magnetic disk 1.

The actuator arm 4 is rotatably supported on a rotating shaft (not shown) and rotates together with the load beam 5 to drive the slider 3 in a substantially radial direction of the magnetic disk 1. The magnetic read / write head mounted on the slider 3 can be arranged at an arbitrary radial position on the magnetic disk 1.

The elevating member 10 is supported by a rotating shaft 12 of a motor 11 as an elevating member driving mechanism attached to the base plate 2. The lifting member 10 has a load
In order to keep the friction with the beam 5 low, it is made of a rigid plastic material or the like filled with polytetrafluoroethylene (PTFE) particles.

The elevating member 10 has an inclined surface 10 on its upper surface.
a, having a slope 10b. When retracting, that is, when retracting the slider 3 from the magnetic disk 1 to the outside of the magnetic disk 1, the actuator arm 4 is integrated with the load beam 5 to
When the load beam 5 reaches the outer peripheral edge of the magnetic disk 1, the lower surface of the end portion 5a of the load beam 5 is inclined by the inclined surface 10a of the elevating member 10, as shown in FIG. , The slider 3 mounted on the load beam 5 is gradually separated from the magnetic disk 1 by the further rotation of the actuator arm 4 and held.

On the other hand, when mounting, that is, when moving the slider 3 from the elevating member 10 to the magnetic disk 1, first, the elevating member 10 is rotated clockwise by the rotation of the motor 11, and then the actuator is rotated.・
The arm 4 rotates together with the load beam 5 in the direction of the inner circumference of the magnetic disk 1, and as shown in FIG.
The lower surface of the end 5a of the beam 5 is
By engaging with the slider b, the slider 3 is mounted on the magnetic disk 1 through a path different from that at the time of mounting.

Here, the attitude of the slider 3 when the slider 3 is separated from the magnetic disk 1 or mounted on the magnetic disk 1 in the evacuation and mounting operations will be described.

The inclined surfaces 10a and 10b of the lifting member 10 are
The magnetic disk 1 has a different inclination angle near the magnetic disk 1. That is, in the first embodiment, the angle between the inclined surface 10a used during the evacuation and the magnetic disk 1 near the magnetic disk 1 depends on the inclined surface 10b used during mounting.
Is larger than the angle formed by the magnetic disk 1 in the vicinity of the magnetic disk 1.

Therefore, the attitude of the slider 3 when mounted and retracted is as shown in FIGS. 4A and 4B. As a result, at the time of retreat, the surface of the slider 3 facing the magnetic disk 1 (air bearing surface) is separated from the magnetic disk 1 while the outer peripheral side of the magnetic disk 1 is lifted.

By setting the attitude of the slider 3 at the time of retreat to the above-mentioned attitude, the negative pressure (pressure lower than the atmospheric pressure) acting on the slider 3 is easily released, and the slider 3 at the time of retreat and the magnetic Contact of the disk 1 can be avoided.

On the other hand, at the time of mounting, the surface of the slider 3 facing the magnetic disk 1 is mounted while maintaining a state almost parallel to the magnetic disk 1. By maintaining such an attitude, an air film is easily formed on the surface (air bearing surface) facing the slider 3, and the slider 3 does not come into contact with the magnetic disk 2.

In the first embodiment, the inclined surfaces 10a,
Although the example in which the cross section of the inclined surface 10b is a straight line has been described, the present invention is not limited to this. Inclined surface 10a, Inclined surface 10b
May be curved. Embodiment 2 to be described later
Similarly, in the fifth embodiment, an example in which the cross section of the inclined surface is a straight line will be described, but the present invention is not limited to this. Slope 1
The cross section of 0 may be a curve.

As described above, according to the first embodiment of the present invention, by using different inclined surfaces when retracting and mounting, the posture of the slider 3 near the magnetic disk 1 in each case is optimized. And the contact between the slider 3 and the magnetic disk 1 can be extremely reduced. Therefore, a highly reliable magnetic disk drive can be realized.

(Embodiment 2) FIG. 5 shows Embodiment 2 according to the present invention. The description of the same configuration as in the first embodiment will be omitted. The elevating member 20 is supported by a shaft 24 fixed substantially vertically to the base plate 2, and is urged by a spring 22 and a spring urging member 23 in a counterclockwise direction as viewed from above the shaft 24.

The lifting member 20 has an inclined surface 20 on its upper surface.
a, an inclined surface 20b, and a cam surface 20c. When the slider 10 is retracted, that is, when the slider 10 is retracted from the magnetic disk 1, the actuator arm 4 rotates integrally with the load beam 5 toward the outer periphery of the magnetic disk 1, and the load beam 5 Upon reaching the outer peripheral edge, the lower surface of the end 5a of the load beam 5 engages with the inclined surface 20a of the lifting member 20 as shown in FIG. 6, and the slider 3 mounted on the load beam 5 is moved to the magnetic disk. 1 and is gradually separated by the further rotation of the actuator arm 4, and is held when the lower surface of the end 5a of the load beam 5 moves from the inclined surface 20a to the inclined surface 20b.

On the other hand, when mounting, that is, when mounting the slider 3 on the magnetic disk 1 from the elevating member 20, the actuator arm 4 rotates integrally with the load beam 5 in the inner circumferential direction of the magnetic disk 1, As shown in FIG. 7, the lower surface of the end 5a of the load beam 5 is engaged with the inclined surface 20b of the lifting member 20 and the tip of the end 5a of the load beam 5 is engaged with the cam surface 20c of the lifting member 20. The slider 3 is mounted on the magnetic disk 1 through a path different from that at the time of mounting.

Here, the operations at the time of evacuation and mounting will be described in detail. FIG. 8A is a diagram illustrating the relationship between the elevating member 20 and the load beam 5 during retreat. FIG.
As shown in (a), the lower surface of the end 5a of the load beam 5 is engaged with the inclined surface 20a, and the slider 3 is moved to the magnetic disk 1.
Can be separated from

FIG. 8 (b) shows the relationship between the lifting member 20 and the load beam 5 during mounting. As shown in FIG. 8B, the lower surface of the end 5a of the load beam 5
b and the tip of the end 5 a is the cam surface 2 of the elevating member 20.
0c (FIG. 7).

In this state, when the actuator arm 4 further rotates toward the magnetic disk 1, the slider 3 is integrated with the load beam 5 and the slider 3 is moved.
Mounted on top.

Here, the attitude of the slider 3 when the slider 3 is separated from the magnetic disk 1 or mounted on the magnetic disk 2 will be described. Lifting member 20
Are inclined with respect to the magnetic disk 1.
There are different inclination angles near the magnetic disk 1. That is, in the second embodiment, the inclined surface 20a used at the time of evacuation is used.
The angle formed with the magnetic disk 1 in the vicinity of the magnetic disk 1 is
The angle formed by the inclined surface 20b used for mounting the magnetic disk 1 in the vicinity of the magnetic disk 1 is larger than that of the inclined surface 20b.

Therefore, as in the first embodiment, it is possible to control the attitude at the time of mounting and at the time of retreat, and the contact between the slider 3 and the magnetic disk 1 can be extremely reduced. Therefore, a highly reliable magnetic disk drive can be realized. Further, since the lifting member 20 is driven by the rotation of the load beam 5, there is an advantage that a new control mechanism is not required.

(Embodiment 3) FIG. 9 shows Embodiment 3 of the present invention. The description of the same configuration as the first and second embodiments is omitted. The elevating member 30 has an inclined surface 30a, an inclined surface 30b, and a cam surface 30c. These configurations are the same as in the second embodiment.

Further, the elevating member 30 has an elastic portion 30d. At the time of retreat, that is, when the slider 3 is moved to the magnetic disk 1
When retracted from the actuator arm 4
When the load beam 5 reaches the outer peripheral edge of the magnetic disk 1 when the load beam 5 reaches the outer peripheral edge of the magnetic disk 1, the end portion 5a of the load beam 5 is rotated.
Is engaged with the inclined surface 30a of the elevating member 30, and the slider 3 mounted on the load beam 5 is gradually separated from the magnetic disk 1 by the further rotation of the actuator arm 4. It is held when the lower surface of the end 5a moves from the inclined surface 30a to the inclined surface 30b.

On the other hand, when mounting, that is, when mounting the slider 3 on the magnetic disk 1 from the elevating member 30, the actuator arm 4 rotates integrally with the load beam 5 in the inner circumferential direction of the magnetic disk 1, Load beam 5
The elastic portion 30d is deformed by the lower surface of the end portion 5a engaging the inclined surface 30b of the elevating member 30 and the tip of the end portion 5a of the load beam 5 engaging the cam surface 30c of the elevating member 30. The slider 3 is mounted on the magnetic disk 1 through a different path from that of the first embodiment.

Here, by setting the inclined surface 30a and the inclined surface 30b in the same manner as in the second embodiment, it is possible to control the attitude at the time of mounting and at the time of retreat, and the contact between the slider 3 and the magnetic disk 1 is extremely reduced. Can be. Therefore, a highly reliable magnetic disk drive can be realized.

Further, since the inclined surface is changed by the deformation of the elastic portion 30d of the elevating member 30 itself, the structure can be extremely simplified, and the cost can be reduced and the reliability can be improved.

(Fourth Embodiment) FIG. 10 shows a fourth embodiment according to the present invention. A description of the same configuration as in the first embodiment will be omitted.

The lifting member 40 is fixed to the base plate 2, and the load beam 6 is mounted on the upper surface of the lifting member 40.
The end 6a has an inclined surface 40a with which the slider 3 is separated from the magnetic disk 1 or mounted on the magnetic disk 1 by the rotation of the actuator arm 4.

Here, the end 6 a of the load beam 6 is arranged on the outer peripheral side of the magnetic disk 1 with respect to the center axis of the load beam 6.

Here, the details of the operations at the time of retreat and at the time of mounting will be described with reference to FIGS. 11 (a) and 11 (b). At the start of the evacuation, an air film is still formed between the slider 3 and the magnetic disk 1, and a positive pressure (higher than atmospheric pressure) and a negative pressure (lower than atmospheric pressure) are generated. These forces and the spring force of the load beam 6 are balanced.

In such a state, even if the slider 3 is to be separated from the magnetic disk 1, the slider 3 tries to maintain a flying height with respect to the magnetic disk 1 because the negative pressure is applied.

In this state, when the end 6a of the load beam 6 is further moved upward by the inclined surface 40a of the elevating member 40, the load beam 6 is moved in the direction of lifting the outer peripheral side of the magnetic disk 1 of the slider 3. Moment force is generated.

Therefore, air does not flow in from the outer peripheral side of the magnetic disk 1 of the slider 3 and a negative pressure is released. As a result, the vibration of the load beam 6 and the slider 3 at the time of separation becomes small, and the contact between the slider 3 and the magnetic disk 1 at the time of retreat can be extremely reduced.

On the other hand, when the slider 3 is mounted, no negative pressure is generated in the slider 3 until an air film is formed on the slider 3.
A large moment force is not generated in the load beam 6 as in the case of retreat.

Therefore, the magnetic disk 1 of the slider 10
Is mounted on the magnetic disk 1 while maintaining a posture substantially parallel to the magnetic disk 1. As a result, an air film is formed without the edge of the slider 3 coming into contact with the magnetic disk 1.

As described above, according to the fourth embodiment, the contact between the slider 3 and the magnetic disk 1 can be extremely reduced both during retreat and during mounting, and a highly reliable magnetic disk device can be realized.

(Fifth Embodiment) FIG. 12 shows a fifth embodiment of the present invention. A description of the same configuration as in the first embodiment will be omitted.

The elevating member 50 according to the fifth embodiment is rotatably attached to a shaft 54 provided substantially perpendicular to the base plate 2, and is attached by a spring 52 and a pin 53 in a counterclockwise direction as viewed from the upper surface of the shaft 54. The slider 3 is engaged with the lower surface of the distal end portion 7a of the load beam 7, receives the inclined surface 50a on which the slider 3 is retracted or mounted from the magnetic disk 1, and receives the airflow caused by the rotation of the magnetic disk 1 to move up and down. Member 5
A rotating power generating unit 50b is provided for generating a force for rotating the O. 0 clockwise as viewed from the upper surface of the shaft 54.

Here, the operations when the slider 3 is retracted and mounted are described in detail. FIG. 12 shows a state where the slider 3 is retracted. Tip 7a of load beam 7
Are engaged on the inclined surface 50 a of the elevating member 50. The load beam 7 is pushed up in a direction away from the magnetic disk 1 integrally with the slider 3, and the slider 3 is separated from the magnetic disk 1.

Here, when the magnetic disk 1 starts rotating, an air flow is generated near the magnetic disk 1 due to the rotation. The generated air flow causes the rotating power generating unit 50b of the lifting member 50 to generate a force for rotating the lifting member 50 clockwise as viewed from the upper surface of the shaft 54.

When the rotation of the magnetic disk 1 becomes high-speed and the force generated in the rotation generating portion 50b reaches a level that overcomes the spring force of the spring 52, the elevating member 50 rotates clockwise as viewed from the upper surface of the shaft 54. Begin to.

The slider 3 gradually approaches the magnetic disk 1 and the tip 7a of the load beam 7 is
13 is mounted on the magnetic disk 1 as shown in FIG.

As described above, since the slider 3 is mounted on the magnetic disk 1 or retracted from the magnetic disk 1 in accordance with the rotation of the magnetic disk 1, a new control mechanism is not required and the configuration is extremely simple. The vertical movement of the slider 3 can be realized.

[0071]

As described above, according to the present invention, the load
The reliability of the magnetic disk drive can be improved by making the inclined surface of the elevating member that engages with a part of the beam different between the mounting and the retreating.

Further, according to the present invention, the phenomenon that the slider and the magnetic disk come into contact can be reduced.

Further, according to the present invention, it is possible to keep the slider posture at the time of mounting and at the time of retreating optimally.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a magnetic disk drive according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state of the magnetic disk drive according to the first embodiment of the present invention when the slider is retracted.

FIG. 3 is a perspective view showing a state of the magnetic disk drive according to the first embodiment of the present invention when a slider is mounted.

FIG. 4 is a diagram showing details in the vicinity of a lifting member of the magnetic disk drive according to the first embodiment of the present invention;

FIG. 5 is a perspective view showing a magnetic disk drive according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing a state in which a magnetic disk device according to a second embodiment of the present invention retracts a slider;

FIG. 7 is a perspective view showing a state in which a slider is mounted on the magnetic disk device according to the second embodiment of the present invention.

FIG. 8 is a diagram showing details in the vicinity of a lifting member of a magnetic disk drive according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing a magnetic disk drive according to a third embodiment of the present invention.

FIG. 10 is a perspective view showing a magnetic disk drive according to a fourth embodiment of the present invention.

FIG. 11 is a diagram showing details in the vicinity of a lifting member of a magnetic disk drive according to a fourth embodiment of the present invention.

FIG. 12 is a perspective view showing a state of a magnetic disk device according to a fifth embodiment of the present invention when a slider is retracted.

FIG. 13 is a perspective view showing a state in which a slider is mounted on a magnetic disk device according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic disk 2 Base plate 3 Slider 4 Actuator arm 5, 6, 7 Load beam 10, 20, 30, 40, 50 Lifting member 11 Motor 12 Rotating shaft 22, 52 Spring 23, 53 Spring biasing member 24 Shaft

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masaru Nakakita 8-8 Koshinmachi, Takamatsu City, Kagawa Prefecture Inside Matsushita Hisashi Denshi Kogyo Co., Ltd. (72) Inventor Kaoru Matsuoka 1006 Kazuma Kazuma, Kadoma City, Osaka Co., Ltd. (72) Inventor Toshio Makabe 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 5D076 AA01 BB01 CC05 DD01 EE01

Claims (12)

[Claims] An actuator pivotable about an axis.
An arm, a load beam mounted on an end of the actuator arm, a slider provided on the load beam, and a magnetic head provided on the slider for recording and reproducing information on a magnetic disk, A magnetic disk drive for positioning said magnetic head at a predetermined position by pivoting said actuator arm substantially radially with respect to a surface of said magnetic disk, wherein said magnetic head is positioned adjacent to a portion of said surface of said magnetic disk. An elevating member provided for retracting and mooring the slider outside the outer peripheral edge of the magnetic disk, wherein the elevating member loads the slider so as to moor the slider gradually away from the surface of the magnetic disk.・
A magnetic disk drive, comprising: a first inclined surface that engages with a beam; and a second inclined surface that engages with the load beam so that the slider is mounted closer to the surface of the magnetic disk. 2. The magnetic disk drive further includes an elevating member driving mechanism that drives the elevating member in a plane substantially parallel to the surface of the magnetic disk. When the slider is retracted from the magnetic disk, the first inclined surface is engaged with the load beam, and when the slider is mounted on the magnetic disk, the second inclined surface is engaged with the load beam. 2. The magnetic disk drive according to claim 1, wherein said lifting member is driven. 3. The inclination angle of the first inclined surface with respect to the surface of the magnetic disk is larger than the inclination angle of the second inclined surface with respect to the surface of the magnetic disk.
The magnetic disk device according to the above. 4. The magnetic disk drive according to claim 1, wherein said lifting member driving mechanism includes a rotation driving mechanism. 5. The magnetic disk drive according to claim 1, wherein said lifting member drive mechanism includes a linear drive mechanism. 6. The magnetic disk device, wherein: an axis substantially rotatably supporting the elevating member and substantially parallel to a rotation axis of the magnetic disk; a spring member for urging the elevating member in one direction; The magnetic device according to claim 1, further comprising a detent pin for restricting rotation of the lifting member, wherein the lifting member further has a cam surface that engages with the load beam to rotate the lifting member. Disk device. 7. The lifting member, wherein the first inclined surface is engaged with the load beam when the slider is retracted from the magnetic disk, and the second inclined surface is engaged when the slider is mounted on the magnetic disk. 7. A magnetic disk drive according to claim 6, wherein said disk drive rotates so as to engage with said load beam. 8. The elastic member provided to move the relative position of the first and second inclined surfaces with respect to the magnetic disk, and the first and second inclined surfaces are elastically displaced by the elastic member. The second
2. The magnetic disk drive according to claim 1, further comprising a cam surface that engages with the load beam so as to move a position of the inclined surface relative to the magnetic disk. 9. The resilient portion is configured such that when the slider is retracted from the magnetic disk, the first inclined surface is formed on the load / unload portion.
9. The magnetic disk drive according to claim 8, wherein the second inclined surface is elastically deformed so as to engage with the beam and engage the load beam when the slider is mounted on the magnetic disk. 10. The magnetic disk drive according to claim 1, wherein the load beam has an end that engages with the first and second inclined surfaces. 11. An actuator arm pivotable about an axis, a load beam mounted on an end of the actuator arm, a slider provided on the load beam, and a magnetic disk provided on the slider. A magnetic head for recording and reproducing information on and from the magnetic disk, wherein the actuator arm is pivoted substantially radially with respect to the surface of the magnetic disk to position the magnetic head at a predetermined position. An elevating member that is provided near a part of the surface of the magnetic disk and retracts and anchors the slider outside an outer peripheral edge of the magnetic disk; The load-loading device should be moored gradually away from the surface.
An inclined surface that engages with the beam and engages the load beam so as to mount the slider gradually closer to the surface of the magnetic disk; and the load beam engages with the inclined surface. A magnetic disk drive, wherein the load beam has a longitudinal central axis, and the end is disposed on the outer peripheral side of the magnetic disk with respect to the central axis. 12. An actuator arm pivotable about an axis, a load beam mounted on an end of the actuator arm, a slider provided on the load beam, and a magnetic disk provided on the slider. A magnetic head for recording and reproducing information on and from the magnetic disk, wherein the actuator arm is pivoted substantially radially with respect to the surface of the magnetic disk to position the magnetic head at a predetermined position. An elevating member that is provided near a part of the surface of the magnetic disk and retracts and anchors the slider outside an outer peripheral edge of the magnetic disk; The load-loading device should be moored gradually away from the surface.
A lifting surface that engages with the load beam so as to mount the slider gradually closer to the surface of the magnetic disk; The lifting member is rotatably supported on a substantially parallel axis, and the lifting member generates a force for rotating the lifting member in a direction in which the slider is mounted on the magnetic disk by an airflow generated by rotation of the magnetic disk. A magnetic disk drive including a rotating power generating unit for causing the magnetic disk to rotate.