JPS60242548A - Floating type magnetic head - Google Patents

Abstract

PURPOSE:To suppress a decrease in the extent of floatation even when the yaw angle of a slider increases by forming a bearing operation part at one or both side edge parts of the slider rail for the slider. CONSTITUTION:The bearing operation part, e.g. step part 6 which is extremely shallow lengthwise is provided at side edge parts of the slider rail 4 for the slider 2 which gives a floating force over a magnetic recording medium. The step part 6 serves as an approach run for pressure rising to air flowing in in the flank direction of the slider 2 when the yaw angle theta of the slider 2 increases. Consequently, nearly the same pressure as that when the yaw angle is zero is generated and a decrease in the extent of floatation of the slider 2 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a floating magnetic head of a magnetic disk drive having a rotary actuator.

[Background of the invention]

In a magnetic disk drive having a rotary actuator, as shown in FIG. 1, as the actuator 3 rotates, the slider 2 on the magnetic disk 1 changes the angle between the circumferential velocity direction of the air flow and the longitudinal direction of the slider 2. That is, the yaw angle θ
changes. This yaw angle θ is approximately ±15° with respect to the rotational direction of the magnetic disk 1.

The slider 2 used in this type of magnetic disk device is
As shown in FIGS. 2 and 3, the slider rail 4 is provided with a tapered portion 4a and a flat portion 4b in the longitudinal direction, and the side edge portion 5 of the slider rail 4 is For example, a large chamfer of about 45° was applied. For this reason, when the yaw angle θ increases, the flying height of the slider 2 rapidly decreases due to the chamfered portion described above, making it easier for the magnetic disk 1 and the slider 2 to come into contact with each other, and in the worst case, the slider 2 crashed and destroyed the storage surface of the magnetic disk 1.

[Purpose of the invention]

The present invention has been made based on the above-mentioned problems, and an object of the present invention is to provide a floating magnetic head that can suppress a reduction in flying height even when the yaw angle increases.

[Summary of the invention]

A feature of the present invention is that a bearing action portion is formed on one or both side edge portions of the slider rail of the slider, and a bearing action is exerted against the lateral flow of air flowing into the slider when the yaw angle increases. This is how it was done.

[Embodiments of the invention]

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

FIGS. 4 and 5 show a slider constituting the magnetic head of the present invention, and in the figures, the same reference numerals as in FIGS. 2 and 3 indicate the same parts.

At the side edge of the slider rail 4 of the slider 2,
For example, a step portion 6 having a minute depth is provided along the longitudinal direction as a bearing action portion.

This step portion 6 functions as a run-up section for increasing the pressure of the airflow flowing in from the side surface of the slider 2 that occurs when the yaw angle θ of the slider 2 increases. The depth D of this step portion 6 is preferably 5 μm or less.

Next, the operation of the above-described magnetic head of the present invention will be explained.

As shown in FIG. 1, when the slider 2 is located in the middle of the magnetic disk 1, air flows in parallel to the slider rail 4, so that a normal floating blade can be obtained.

However, when the slider 2 is at a position corresponding to the start or end of the magnetic disk 1, that is, when the yaw angle θ is large, air flows in from the side of the slider 2, and the conventional slider has good flying stability. However, in the present invention, the step portion 6 functions as a run-up section for increasing the pressure of air flowing in from the side surface of the slider 2. Therefore, it is possible to generate the same pressure as in the case without a yaw angle, and to prevent a reduction in the flying height of the slider 2.

In the above-described embodiment, the step portions 6 are provided on both side edge portions of the slider rail 4, but the same effect can be obtained even if the step portions 6 are provided on only one side edge portion.

Furthermore, in the embodiments described above, the step portion formed at the side edge portion of the slider rail 4 was explained as a bearing action portion that performs a bearing action. It is not limited to things.

〔Effect of the invention〕

As described in detail above, the present invention does not reduce the flying height of the slider even when the yaw angle of the slider becomes large, and can improve the flying stability of the slider, thereby preventing the slider from falling and preventing the storage surface of the magnetic disk from falling. can prevent the destruction of

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the moving operation of a slider that operates in a magnetic disk drive having a rotary actuator, FIG. 2 is a bottom view of a slider that constitutes a conventional magnetic head, and FIG.
The figure is a view taken along the line ■-■ in FIG. 2, FIG. 4 is a bottom view of the slider constituting the magnetic head of the present invention, and FIG. 5 is a v in FIG.
-V line arrow view. 2...Slider, 4...Slider rail, 4a...
- Taper part, 4b...flat part, 6...step part. Agent: Patent Attorney Katsuo Ogawa

Claims (1)

[Claims] 1. A floating magnetic head comprising a slider that provides a flying edge on a magnetic recording medium, characterized in that a bearing acting portion is formed at one or both side edge portions of a slider rail of the slider.