JPS63201967A - Transducer support device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic head support device for a magnetic disk storage device, in which fluctuations in the flying height and position of a magnetic helad slider caused by vibrations of the support device on the buttocks are a major obstacle. The present invention relates to a low-vibration support device suitable for use in high-density magnetic disk storage devices.

[Conventional technology]

The conventional transducer support device was developed by Japanese Patent Publication No. 58-228.
As disclosed in Publication No. 27, a rigid arm connected to an access mechanism, a support attached to the rigid arm, a flexible body attached to the support, and a flexible body The magnetic head (transducer) consists of an attached air bearing slider and an air bearing slider.
It is mounted on the bearing slider. The support body includes an elastic spring section and a triangular load beam section, and since the load beam section is provided with a flange, the support body forms a U-shape with a substantially flat bottom surface as a whole. In the load beam section, the load force generated by the deformation of the elastic spring section is transmitted to the air bearing slider, and becomes a pressing force of the air bearing slider in the direction of the medium surface.

Further, when the transducer support device is set to a rotating storage medium and in the next state, the longitudinal direction of the load beam portion almost coincides (within a range of about ±20') with the radius line of the rotating medium. Therefore, the flow generated by the rotation of the media flows approximately perpendicular to the load beam section.

There was a problem in that insufficient consideration was given to the fact that the load beam section is vibrated by the flow, and the resulting vibrations are hindering the ability to increase the density of magnetic disk drives. That is,
The load beam section is excited and vibrates by the flow hitting the load beam section at right angles. This oscillation is transmitted to the slider via the flexible body, resulting in fluctuations in the flying height of the slider and positioning errors.

An object of the present invention is to provide a transducer support device for a high-density magnetic disk device that can suppress determination errors to a small level.

[Means for solving problems]

The above object is achieved by providing the slider, for example an air bearing slider, which holds the transdue 11 on the load beam portion of the support with a protrusion extending in the longitudinal direction of the support. This protrusion may be a continuous protrusion or an intermittent protrusion.

It is provided on both the upstream and downstream sides of the flow generated by the rotation of the medium, that is, the magnetic disk, or only on the downstream side.

[Effect]

The protrusion provided on the downstream side of the center line of the load beam portion allows separation from the trailing edge of the bottom surface to be brought closer to the bottom surface side. This reduces turbulence in the wake.

The fluid excitation force from the wake can be reduced.

In addition, the protrusions provided near the upstream front edge and downstream rear edge of the bottom of the load beam section delay the peeling from the upstream front edge by the upstream protrusion, and slow the peeling from the downstream rear edge by the downstream protrusion. Minimize peeling.

This makes it possible to stabilize the flow at the bottom, reduce the wake, and reduce the fluid excitation force from the wake.

Furthermore, if the protrusions are symmetrical on the upstream and downstream sides of the center line, the support will not undergo complex deformations such as asymmetric twisting, so a more favorable effect can be obtained than when the protrusions are provided only on the downstream side. .

〔Example〕

Hereinafter, a simple embodiment of the present invention will be explained with reference to FIGS. 1 and 2. In FIG. 1, the transducer 1 is connected to the air bearing surface 2.
It is mounted on an air bearing slider 3 having an air bearing slider 3, and is held facing a rotating storage medium (not shown) with a small gap therebetween. The supports are a flexible structural support 4 and a rigid structural support 5.
The air bearing slider 3 is attached to a flexible structural support 4, and the flexible structural support 4 is further connected to a rigid structural support 5 by a coupling means such as welding.

The rigid structure support body 5 is composed of a load beam s62, an elastic spring part 7, and a mounting part 8, and is connected to the rigid arm 10 via a space t9 by a connecting means such as a screw. The load beam section 6 transfers the load generated by the elastic spring section 7 to air! Transducer 11 is transmitted to the bearing slider 3 to balance the air floating blade generated between the floating surface 2 and the rotating medium surface.
hold on hold. Since the center line C of the load beam section 6 is within a range of about ±20° deviation from the center line (radial line) of the rotating medium, the flow accompanying the rotation of the medium is shown in the center line C2 in the plane. Alternatively, it has a cross-sectional shape consisting of a slightly curved planar portion 11, an upstream flange 12 and a downstream 7 flange 13 formed by bending both sides of the planar portion 11.

The feature of the present invention is that an upstream protrusion 1 is provided near the upstream front edge of the flat part.
4. It has a downstream protrusion 15 near the downstream trailing edge. The protrusions 14 and 15 are formed by groove-like depressions provided on the bottom surface 11, and extend continuously in the longitudinal direction of the load beam portion 6 as shown in FIG. The height of the protrusion 14.15 is (1/2±
The distance from the leading edge and the trailing edge to the top of each protrusion is optimally within the range of (1/2±1/4).

FIG. 3 shows a second embodiment. In this embodiment, the projections 14 and 151 are arranged intermittently.

FIG. 4 shows a cross section of the load beam section 6 of the third embodiment. This embodiment is characterized in that only the downstream protrusion 15 is provided.

FIG. 5 shows the load beam section 6 and cross section of the fourth embodiment. In this embodiment, the protrusions 14 and 15 are constituted by round rods that are in contact with the flow surface side of the bottom surface.

FIG. 6 shows a fifth embodiment. In this embodiment, the protrusions 14 and 15 are formed by punching out the bottom surface and bending it toward the flow surface side.

With such a configuration, the upstream protrusion 14 can delay the separation of the flow from the front edge of the flat part 11, and the downstream protrusion 15 can reduce the separation from the downstream rear edge.

FIG. 7 shows the effect of reducing fluid excitation force according to the present invention. <a> is a conventional transdupe support device i3600
Vibration caused by the force of a laminated disc with a diameter of 14" rotating at a speed of Showing results.

The first embodiment has a large fluid force reduction effect, and the third embodiment also has a great reduction effect.

〔Effect of the invention〕

According to the present invention, it is possible to suppress the excitation force applied to the load beam section due to the rotation of the magnetic disk, and it is possible to suppress fluctuations in the flying height of the slider and positioning errors to a small level.

[Brief explanation of the drawing]

1 and 2 are diagrams showing a first embodiment of the invention, and FIG. 3 is a diagram showing a second embodiment of the invention. FIG. 4 is a cross-sectional view of the load beam section 6 showing a third embodiment of the present invention, FIG. 5 is a cross-sectional view of the load beam section 6 showing a fourth embodiment of the present invention, and FIG. FIG. 7 is a sectional view of the load beam 6 showing the fifth embodiment, and FIG. 7 is a frequency analysis diagram of vibration. DESCRIPTION OF SYMBOLS 1... Transducer, 3... Air bearing slider, 4... Flexible structural support, 5... Rigid structural support. 6... Load beam part, 11... Plane part, 12...
Upstream side 7 flange, 13... Downstream side flange, 14...
・Upstream side protrusion, 15...downstream side protrusion.

Claims (1)

[Scope of Claims] 1. A transducer support device including a slider that holds a transducer, and a support body fixed at one end and supporting the slider at the other end, the support body comprising:
A transducer support device comprising a load beam portion having an elastic spring portion and a protrusion extending in the longitudinal direction of the support. 2. Claim 1 provides that the protrusions are provided symmetrically on the upstream and downstream sides of the flow generated by the rotation of the medium with respect to the center line extending in the longitudinal direction of the load beam part. Characteristic transducer support device. 3. The transducer support device according to claim 1, wherein the protrusion is provided on the downstream side of the flow generated by rotation of the medium. 4. The transducer support device according to claim 1, wherein the protrusion is formed by a recess made in the beam. 5. The transducer support device according to claim 1, wherein the protrusion is formed by fixing a member. 6. The transducer support device according to claim 1, wherein the protrusion is formed by bending a part of the load beam.