JP2553040B2 - Magnetic head support mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] The present invention relates to a magnetic head support mechanism used in a magnetic disk device or the like, which is supported at the tip of a load arm.
The magnetic head slider is applied to the slider via the pivot point in the loaded state on the area surface having the pivot point in the gimbal in which the pivot surface has the pivot point and the pivot arm is in contact with the load arm. The pressure center position and the levitation force center position are arranged so as to coincide with each other, and the unnecessary moment acting on the magnetic head slider in the loaded state due to the deviation between the pressure center and the levitation force center is reduced. The magnetic head slider has improved low flying stability.

[Industrial applications]

The present invention relates to an improvement of a magnetic head support mechanism used in a magnetic disk device or the like, and in particular, it minimizes the positional deviation between the center of the flying force of a magnetic head slider supported in a loaded state and the center of pressure applied to the slider. The present invention relates to a magnetic head support mechanism that reduces unnecessary moments that make the flying state of a magnetic head slider unstable.

A floating magnetic head slider that records / reproduces information on / from a magnetic disk medium in a magnetic disk device or the like uses a support mechanism composed of a pressure supporting spring structure in order to stably fly over a surface of the magnetic disk medium with a minute gap. A supported configuration has been adopted, and various configurations have already been proposed.

In such a magnetic head support mechanism, in order to withstand high-speed access, it has high rigidity in the access direction, and the flying state of the magnetic head slider is maintained against vibrations from various directions and various disturbances. It is required that the magnetic head slider can always be kept stable, but in recent years, the recording and reproducing density has been increased more and more in this field, so that the magnetic head slider is required to have a stable low flying height.

[Conventional technology]

As shown in FIG. 3, the conventional magnetic head support mechanism mainly comprises a load arm 2 attached to a rigid main arm 1, and a tip end of the load arm 2 has a region surface having a pivot projection 4 in a downward direction. A gimbal 3 which is flexibly corresponding to the rotation direction of the magnetic disk medium 6 in which the pivot protrusion 4 is in contact with and in contact with the load arm 2 is connected.

A magnetic head slider 5 is supported on the area surface of the gimbal 3 having the pivot projection 4.

[Problems to be solved by the invention]

By the way, in such a conventional magnetic head support mechanism,
As shown in the partially enlarged view of FIG. 4, the magnetic head slider 5 arranged on the area surface of the gimbal 3 having the pivot projection 4 has a magnetic field at the center A of the pivot surface 4 of the area surface having the pivot projection 4. A support structure is adopted in which the head slider 5 is attached so that the levitation force centers B thereof coincide with each other.

Therefore, when the magnetic head slider 5 is loaded on the magnetic disk medium 6 by a magnetic head supporting mechanism using a gimbal having a shape in which the slider supporting portion and the folded portion for arm connection are bent at a constant angle. Since the load arm 2 is not in parallel with the surface of the magnetic disk medium 6, the contact point C of the pivot protrusion 4 with respect to the load arm 2 is displaced from the center of the pivot protrusion 4 and is applied to the magnetic head slider 5. The pressure is applied from a position displaced from the center B of the flying force of the slider 5, that is, from the contact point C, and this acts as a moment, so that there is a drawback that stable low flying of the magnetic head slider 5 is hindered.

The distance at which the abutment point C of the pivot protrusion 4 with respect to the load arm 2 deviates from the center of the pivot protrusion 4 may be 13 .mu.m, for example, and a mounting error of the magnetic head slider 5 with respect to the predetermined area surface of the gimbal 3 may occur. The allowable range is about ± 50 μm, while the above-mentioned deviation value cannot be ignored.

Further, when the load arm 2 is warped due to the vibration from the main arm 1 or the like due to the above-mentioned displacement, the displacement of the pressing force with respect to the magnetic head slider 5 is further increased, and a larger moment is generated. Has a problem that the magnetic head slider 5 cannot be stably floated to a low flying height.

In view of such conventional drawbacks, the present invention provides a mounting structure in which a magnetic head slider is attached to a gimbal region surface having a pivot protrusion so that a center of pressure applied to the magnetic head slider in a loaded state and a center of levitation force are aligned with each other. hand,
An object of the present invention is to provide a novel magnetic head support mechanism which reduces unnecessary moment acting on the slider and stabilizes the low flying of the magnetic head slider.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention, as shown in FIG. 1, has a tip end of a load arm 2 attached to a main arm 1, a region surface having a pivot projection 4 is bent downward, and the pivot surface is bent downward. A gimbal 3 having a shape in which the protrusion 4 contacts the load arm 2 is connected.

Further, the magnetic head slider 5 is joined to the area surface of the gimbal 3 having the pivot protrusion 4 in a positional relationship in which the center of the levitation force is displaced from the center of the pivot protrusion by a predetermined distance, and the magnetic head slider 5 is connected to the load arm in the loaded state. The contact point (contact point) of the pivot protrusion and the center of the floating force of the magnetic head slider are configured to coincide with each other.

[Work]

The magnetic head support mechanism of the present invention is the magnetic head slider 5
However, since it is arranged on the area surface having the pivot projection 4 of the gimbal 3 in such a manner that the center of pressure applied and the center of levitation force in the loaded state coincide with each other, an unnecessary moment acting on the slider 5 is remarkably increased. Therefore, the low flying height of the magnetic head slider 5 is stabilized.

〔Example〕

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

FIG. 1 is a side view of essential parts showing an embodiment of a magnetic head support mechanism according to the present invention.

In the figure, 1 is a main arm having rigidity supported by an actuator (not shown), 2 is a load arm, and a region surface having a pivot projection 4 is bent downward at the tip of the load arm 2 and A gimbal 3 in which the pivot projection 4 contacts the load arm 2 is connected.

A magnetic head slider 5 is joined to the area surface of the gimbal 3 having the pivot projection 4 as shown in the partially enlarged side view of FIG. That is, the gimbal and the magnetic head slider are joined in a positional relationship in which the center of the pivot protrusion 5 of the gimbal 3 is displaced from the center B of the levitation force of the magnetic head slider 5 by a predetermined distance, and the gimbal is attached to the magnetic head slider 5 in the loaded state. Center position of the pressing force, that is, specifically, the pivot projection 4 with respect to the load arm 2.
The contact point C and the levitation force center B at that time are joined and supported so as to match each other.

Therefore, in the load state in which the magnetic head slider 5 is levitated on the magnetic disk medium 6 by the support mechanism having such a configuration, the unnecessary moment acting on the magnetic head slider 5 is significantly reduced, and the levitation force and the load arm 2 side are increased. It is possible to stabilize the low flying height of the magnetic head slider 5 by appropriately balancing the applied pressure from the magnetic head slider 5.

〔The invention's effect〕

As is clear from the above description, according to the magnetic head support mechanism of the present invention, the action of the unnecessary moment in the flying load state of the magnetic head slider is greatly reduced, so that the low flying stability of the magnetic head slider is improved. Is significantly improved.

Therefore, it is extremely advantageous when used for high-density recording / reproduction, and exerts an excellent effect when applied to this type of floating magnetic head supporting mechanism.

[Brief description of drawings]

FIG. 1 is a side view of an essential part showing an embodiment of a magnetic head support mechanism according to the present invention, and FIG. 2 is a partially enlarged side view for explaining an embodiment of a magnetic head support mechanism according to the present invention. FIG. 3 is a side view of an essential part showing a conventional magnetic head support mechanism, and FIG. 4 is a partially enlarged side view for explaining the conventional magnetic head support mechanism. In FIG. 1 and FIG. 2, 1 is a main arm, 2 is a load arm, 3 is a gimbal, 4 is a pivot protrusion, 5 is a magnetic head slider, B is the center of the levitation force, and C is the contact point of the pivot protrusion 4 (pressing force). Center).

Claims (1)

(57) [Claims] 1. A mechanism for supporting a magnetic head slider (5) on the tip of a load arm (2) via a gimbal (3), wherein the gimbal has a pivot protrusion (4) on a surface supporting the magnetic head slider. ) Is connected to the tip of the load arm, and the pivot protrusion is brought into contact with the load arm so that pressure is applied by the arm. In the magnetic head slider, the gimbal and the magnetic head slider are joined in a positional relationship in which the center of the flying protrusion of the magnetic head slider is displaced by a predetermined distance from the center of the floating force of the magnetic head slider, and the load arm and the pivot protrusion contact each other in the loaded state. A magnetic head support mechanism, characterized in that the points and the center of the levitation force of the magnetic head slider coincide with each other.