JPH0668629A - Magnetic head supporting mechanism and magnetic head assembly using the same and magnetic disk device - Google Patents

Abstract

PURPOSE:To obtain the magnetic head supporting mechanism causing less damage due to collision between a slider and a medium. CONSTITUTION:The magnetic head slider 21 is fixedly supported by the middle part 31 of a gimbal spring 30. This gimbal spring 30 is fixed to a load beam 41. The gimbal spring 30 is provided with an inclination of 5 minutes to 3 degrees for inclining itself in the direction of separating a front end (air inflow end part) 23 of the magnetic head slider 21 from the magnetic disk medium 10.

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 a magnetic head assembly used therein.

[0002]

2. Description of the Related Art In a magnetic disk device for writing and reading information on and from a rotating magnetic disk medium by a magnetic head, in order to avoid abrasion caused by sliding of both the magnetic disk medium and the magnetic head, the magnetic head is read only when reading and writing information. Mounted on a magnetic disk medium (load: load)
However, in other cases, a method is adopted in which the magnetic head is unloaded from the magnetic disk medium. The magnetic head is usually in the form of a magnetic head slider with a slider for facilitating sliding on the magnetic disk medium or for flying with a minute gap.

Conventionally, in this type of magnetic disk device, the angle of the air bearing surface of the magnetic head slider with respect to the surface of the magnetic disk medium has not been specified. Therefore, when the magnetic head slider is loaded or unloaded on the magnetic disk medium, the edges or corners around the air bearing surface may come into contact with the magnetic disk medium, damaging both the magnetic disk medium and the magnetic head slider. there were. In particular, when the front end side of the magnetic head slider is loaded in a state in which the front end side is inclined toward the magnetic disk medium, both the magnetic disk medium and the magnetic head slider are instantly destroyed, which is a serious failure called head crash. It may lead to.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to reduce the risk of the edges and corners of the magnetic head slider contacting the magnetic disk medium during loading and unloading of the magnetic head slider, thereby reducing the magnetic head slider. Another object of the present invention is to provide a highly reliable magnetic disk device in which the magnetic disk medium is not easily damaged.

[0005]

SUMMARY OF THE INVENTION A magnetic head article mechanism of the present invention comprises a gimbal spring having a central portion for supporting the magnetic head and both arm portions arranged on both sides thereof, and a load beam for holding the gimbal spring. In the magnetic head support mechanism having, the central portion of the gimbal spring is inclined 5 minutes to 3 degrees with respect to the both arm portions in the direction in which the free end side approaches the load beam. The magnetic head assembly of the present invention includes a magnetic head slider, a magnetic head supporting mechanism for supporting the magnetic head slider, and an arm for supporting the magnetic head supporting mechanism. The air bearing surface of the arm from 5 minutes to 3
The rear end side of the magnetic head slider is inclined in a direction away from the arm.

The magnetic disk device of the present invention is a magnetic disk device including a magnetic head assembly having a magnetic head slider and a magnetic disk medium, wherein the air bearing surface of the magnetic head slider is relative to the surface of the magnetic disk medium. 5 minutes to 3 degrees, the rear end side of the magnetic head slider is inclined toward the surface of the magnetic disk medium.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a side view showing a first embodiment of the present invention,
FIG. 2 is a plan view of FIG.

The magnetic head support mechanism 40 of this embodiment includes a stainless steel gimbal spring 30 integrally formed with a central portion 31 for adhesively holding the magnetic head slider 21 and both arm portions 32 arranged on both sides thereof. The gimbal spring 30 is also made of a stainless steel load beam 41.
It is fixed to the tip of by welding. Further, at the other end of the load beam 41, the arm 61 is attached to the magnetic head supporting mechanism 4
A mount block 53 for mounting 0 is also fixed by welding. The central portion 31 of the gimbal spring 30 is formed such that its free end side is inclined 5 minutes to 3 degrees in a direction approaching the load beam 41. This inclination angle was given by bending with a press. By providing the central portion 31 of the gimbal spring 30 with the inclination angle, the front end 23 side of the magnetic head slider 21 held by the magnetic head support mechanism 40 is always separated from the magnetic disk medium 10 when loading or unloading. Will be inclined in the direction. As a result, the magnetic head slider 21 can smoothly transition from the separated state to the stable flying state during loading, and can reversely transition from the stable flying state to the separated state smoothly during unloading. The edges or corners around the air bearing surface 25 of No. 1 never came into contact with the magnetic disk medium 10. In addition, in this embodiment, the load beam 41 is bent so that the free end side of the central portion 31 of the gimbal spring 30 does not come into contact with the load beam 41.

Next, the magnetic head assembly 20 of the present invention includes the magnetic head support mechanism 40, an arm 61 and a magnetic head slider 21. The air bearing surface 25 of the magnetic head slider 21 of the magnetic head assembly 20 is formed by the arm 61.
With respect to 5 minutes to 3 degrees, the rear end 24 side of the magnetic head slider 21 is inclined in a direction away from the arm 61. Therefore, as described above, the edges or corners of the magnetic head slider 21 do not come into contact with the magnetic disk medium 10 during loading and unloading, and damage to both the magnetic disk medium 10 and the magnetic head slider 21 can be avoided. .

FIG. 3 is a perspective view showing an embodiment in which the magnetic head assembly of the present invention is mounted on a magnetic disk device.

The magnetic disk device 90 of the present invention includes a magnetic disk medium 10, a magnetic head assembly 20, and a voice coil motor 95 arranged on a base plate 91.
The magnetic head assembly 20 is composed of the magnetic head support mechanism 40, the arm 61, and the magnetic head slider 21 shown in FIGS. Further, one end of the arm 61 is mounted on a voice coil motor 95, and the voice coil motor 95 can move the magnetic head slider 21 in the radial direction of the magnetic disk medium 10. On the other hand, two l-shaped cantilevers 83 are installed on the side of the magnetic head support mechanism 40 of the magnetic head assembly 20. The cantilever 83 is driven by a solenoid 86, and the load beam 41 of the magnetic head support mechanism 40 is driven.
The magnetic head slider 21 and the magnetic disk medium 10 by engaging them with and pushing them up or down.
It is to be unloaded from the surface of and then loaded in the opposite direction. The magnetic head assembly 20 mounted on the magnetic disk device 90 of the present invention is the same as that of the embodiment shown in FIGS.

Therefore, the front end 23 of the magnetic head slider 21 held by the magnetic head support mechanism 40 of the magnetic head assembly 20 is inclined 5 minutes to 3 degrees in the direction away from the magnetic disk medium 10 during loading and unloading. I am allowed. Therefore, as described above, the edges or corners of the magnetic head slider 21 do not come into contact with the magnetic disk medium 10 during loading and unloading, and damage to both can be avoided.

Next, a second embodiment of the present invention will be described with reference to FIGS. In the first embodiment described above, the gimbal spring 30 and the load beam 41 are fixed to each other on the front end side of the slider 21, but in the second embodiment, the gimbal spring and the load beam are attached to the rear end side of the slider 21. Stick to it.

Referring to FIG. 4, gimbal spring 72
The load beam 71 and the load beam 71 are welded to each other at the mounting portion 75 on the rear end side of the slider 21. The slider 21 is fixed to the central portion 73 of the gimbal spring 72. Slider 21
There are two types of inclination as shown in FIG.

In FIG. 5A, a tilt is formed in the central portion 73 of the gimbal spring 72 as in the first embodiment.

In FIG. 5B, the arms 74 of the gimbal spring 72 are tilted.

Next, the inclination angle of 5 minutes to 3 degrees, which is limited in the embodiment of the present invention, will be described with reference to FIG.

In FIG. 6, the inside surrounded by a dotted line is a portion obtained by an experiment, in which the energy of collision between the slider and the medium is an allowable value. As is clear from this result, when the roll angle (the tilt angle of the slider in the medium radial direction) is small, the pitch angle (the tilt angle of the slider in the medium running direction, the tilt angle characteristic of the present invention) is 5 minutes to 3 degrees. Collisions are not a problem.

[0019]

As described above, according to the present invention, the central portion of the gimbal spring for adhering the magnetic head slider and the free end of the gimbal spring in the magnetic head support mechanism for supporting the magnetic head slider have a distance from 5 minutes to 3 minutes in the direction toward the load beam.
The inclination of the magnetic head slider prevents the edges or corners of the magnetic head slider from coming into contact with the magnetic disk medium during loading and unloading, and avoids damage to both sides.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view of a magnetic disk device according to an embodiment of the present invention.

FIG. 4 is a plan view of the second embodiment of the present invention.

5 is a side view of FIG.

FIG. 6 is a graph showing the relationship between the slider angle and the collision energy between the slider and the medium.

[Explanation of symbols]

 21 Slider 30 Gimbal Spring 32 Both Ends 31 Central Part 41 Load Beam 40 Magnetic Head Support Mechanism

Claims (5)

[Claims] 1. A magnetic head support mechanism including a gimbal spring having a central portion for supporting a magnetic head slider and both arm portions arranged on both sides thereof, and a magnetic head supporting mechanism having a load beam for holding the gimbal spring. A magnetic head supporting mechanism, wherein the central portion is inclined with respect to the arm portions in a direction in which a free end side thereof approaches the load beam from 5 minutes to 3 degrees. 2. The magnetic head support mechanism according to claim 1, wherein the load beam is bent at a magnetic head slider support portion of the cymbal spring so as to maintain a predetermined distance from the gimbal spring. 3. The magnetic head support mechanism according to claim 1, wherein both arms of the gimbal spring are annular so as to maintain a predetermined gap with the magnetic head slider. 4. A magnetic head assembly including a magnetic head slider, a magnetic head support mechanism for supporting the magnetic head slider, and an arm for supporting the magnetic head support mechanism, wherein an air bearing surface of the magnetic head slider is A magnetic head assembly, wherein the rear end side of the magnetic head slider is inclined 5 minutes to 3 degrees with respect to the arm in a direction away from the arm. 5. A magnetic head assembly having a magnetic head slider, and a magnetic disk device including a magnetic disk medium, wherein the air bearing surface of the magnetic head slider is 5 minutes to 3 degrees with respect to the surface of the magnetic disk medium. A magnetic disk device, wherein a rear end side of a slider is tilted in a direction approaching a surface of a magnetic disk medium.