JPH06101213B2 - Supporting device for magnetic head slider - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head slider supporting device for reading or writing information on a rotating disk medium.

[Conventional technology]

A magnetic head slider (head slider) that reads or writes information from or to a rigid or flexible rotating disk-shaped magnetic recording medium (disk medium) follows the irregularity of the surface of the disk medium. It needs to be fast and accurately positioned on a specified track on a disk medium. Therefore, in such a head slider supporting device, the head slider is pressed against the disk medium with an appropriate load, has the flexibility to follow the movement of the surface of the disk medium, and It is required to have high rigidity in the parallel direction.

On the other hand, as a method for positioning the head slider on a predetermined track, there is a rotary seek method in which the head slider makes a rotational movement so as to draw an arc. Among these methods, particularly in the longitudinal direction of the supporting device and the longitudinal direction of the head slider. An apparatus in which and are aligned (generally referred to as an inline rotary seek method) is widely used because it is effective for downsizing the magnetic disk apparatus. FIGS. 3A and 3B are a plan view and a front view showing an example of such a conventional magnetic head slider supporting device. In the example of FIG. 3, a beam portion 16 having a mount 60 for mounting on a head arm (not shown), a rear end portion fixed on the mount 60, and projecting edges 17a and 17b bent at right angles on both sides is provided. The flexible gimbal portion 30 for mounting the head slider is connected to the tip of the load beam 10 having the above-mentioned rear end portion and the pressure spring portion 20 between the beam portion 16. The flexible gimbal portion 30 is provided with the load beam 10
And two outer fingers 32a and 32b parallel to the longitudinal direction of the center finger 36b for mounting a head slider (not shown) between them and having a free end at one end.
And is configured. As described above, since the conventional magnetic head slider supporting device has a cantilever structure, it has rigidity in the longitudinal direction of the load beam 10, but has poor rigidity in the direction perpendicular to the longitudinal direction (lateral direction). . For this reason, when used in an inline rotary seek system in which the longitudinal direction of the support device and the longitudinal direction of the head slider are aligned with each other, the rigidity in the lateral direction is insufficient, so that a high speed seek operation cannot be performed. Have

[Problems to be Solved by the Invention]

The problem to be solved by the present invention is to eliminate the lack of lateral rigidity in the conventional magnetic head slider supporting device as described above. In other words, an object of the present invention is to provide a magnetic head slider supporting device capable of realizing high-speed seek operation in an inline rotary seek system by improving lateral rigidity insufficiency in the conventional magnetic head slider supporting device. To do.

[Means for Solving the Problems]

A support device for a magnetic head slider for an in-line rotary seek type magnetic disk device according to the present invention comprises a mount mounted on a head arm, and a rear end portion and both sides mounted and fixed on the mount and bent at right angles. A beam portion having a projecting edge, a pressure spring portion provided between the rear end portion and the beam portion, and a load beam having an inverted isosceles triangular annular ring portion provided at the tip of the beam portion, A pair of parallel outer fingers and a central finger between the two outer fingers that is parallel to them and has a free end at one end for mounting the head slider; A flexible gimbal portion fixed at a right angle to the axis of the load beam is provided on the most advanced bottom portion corresponding to the bottom.

〔Example〕

 Next, embodiments of the present invention will be described with reference to the drawings.

1 (a) and 1 (b) are a plan view and a front view showing an embodiment of the present invention.

As shown in FIG. 1, the present embodiment is a load beam having a mount 1 for mounting on a head arm (not shown) and a rear end portion mounted on the mount 1 and fixed by means such as welding. 2 and. The load beam 2 is formed into a cylindrical surface so that the portion near the mount 1 serves as the pressure spring portion 3, and the beam portion 9 at the tip of the load beam 2 has projecting edges 9a and 9b bent at right angles on both sides. ing. Further, the end portion of the load beam 2 on the opposite side of the mount 1 forms an annular portion 4 having an approximately isosceles triangular shape, and the bottom portion of the isosceles triangle at the tip of the load beam 2 is The flexible gimbal portion 5 is attached by welding in parallel with the bottom portion. The flexible gimbal portion 5 has two parallel outer fingers 6a and 6b and between them a central finger 7 which is provided in parallel with them and has one free end.
A protrusion 8 is formed on almost the center of the center finger 7. A head slider (not shown) is fixed to the central finger 7. The protrusion 8 transmits a pressing force by coming into contact with the annular portion 4 at the tip of the load beam 2 and serves as a center of rotation when the head slider rotates about an axis parallel to the surface of the disk medium.

FIG. 2 is a plan view showing a state in which the head slider supporting device described above is used in a magnetic disk device of an inline rotary seek system.

As shown in FIG. 2, in the inline rotary seek system, the center of the rotary shaft 65 of the actuator (not shown) and the center lines of the head arm 62, the magnetic head slider support device 11, and the head slider 40 are substantially on a straight line. It is located in. When the head slider 40 seeks (positioning operation) on the disk medium 50, the head slider 40 operates so as to draw an arc about the rotary shaft 65 of the actuator (arrow A). Therefore, a force in the seek direction A is applied to the tips of the head slider 40 and the magnetic head slider support device 11. The force in the seek direction A induces vibration of the mechanical system of the head slider and the magnetic head slider supporting device. However, in this embodiment, since the tip portion of the load beam 2 is the annular portion 4, the rigidity in the seek direction A is high, and the load beam 2 can withstand it. As described above, this embodiment is suitable for use in the magnetic disk drive of the inline rotary seek system, and the high speed seek operation can be realized in the system.

〔The invention's effect〕

As described above, according to the magnetic head slider supporting apparatus of the present invention, the load beam has a distal end portion having an annular shape, and the flexible gimbal portion 7 is disposed at a right angle to the axial line of the load beam. The effect is that the seek speed can be increased and a high-speed seek operation can be realized in the magnetic disk device of the inline rotary seek system.

[Brief description of drawings]

1 (a) and 1 (b) are a plan view and a front view showing an embodiment of the present invention, and FIG. 2 is a plan view showing an example in which the embodiment of FIG. 1 is used in an in-line rotary system. FIGS. 3A and 3B are a plan view and a front view showing an example of a conventional magnetic head slider. 1.60 ... Mount, 2.10 ... Load beam, 3.20 ... Pressure spring part, 4 ... Annular part, 5.30 ... Flexible gimbal part, 6a
・ 6b ・ 32a ・ 32b ... Outer fingers, 7 ・ 36 ... Central finger, 8 ... Projection, 9 ・ 16 ... Beam part, 9a ・ 9b ・ 17a ・ 17b ...
Edge, 40 ... Head slider, 50 ... Disk medium, 62 ... Head arm, 65 ... Rotation axis.

Claims (1)

[Claims] 1. A mount to be mounted on a head arm, a beam portion having a rear end portion mounted and fixed on the mount and a projecting edge bent at both sides at a right angle, the rear end portion and the beam portion. Between a load spring having a pressure spring portion provided between and a ring-shaped annular portion having an isosceles triangular shape provided at the tip of the beam portion, and two parallel outer fingers and the two outer fingers. Has a central finger mounted parallel to them and having a free end at one end for mounting the head slider, and can be fixed at a right angle to the axis of the load beam at the leading edge of the isosceles triangle corresponding to the bottom. A support device for a magnetic head slider for an in-line type rotary seek type magnetic disk drive, comprising a flexible gimbal portion.