JPH01292683A - Supporting mechanism for floating head - Google Patents

Abstract

PURPOSE:To improve the efficiency and the precision of the spring setting of a spring arm by easily changing the spring pressure of the spring arm by changing optionally the clamping quantity of a clamping screw to hold a pressing member. CONSTITUTION:When the clamping screw 28 at the spring arm fixing part of a supporting arm 25 is fastened gradually, the starting part 24 of the spring arm 21 is pushed downward by the tip end of the pressing member 27, and since the spring part 21b at said part too is bent downward, the spring pressure of the arm 21 toward a disk medium side can be strengthened. Accordingly, by changing optionally the clamping quantity of the clamping screw 28 upon the pressing member 27, the floating quantity of a head slider 23 from the disk medium can be kept constant. Thus, the pressing force of the head slider for a disk non-recording medium at the initial period of drive can be easily and simply adjusted and controlled so as to be the prescribed pressing force.

Description

Detailed Description of the Invention [Summary] Regarding the improvement of a head support mechanism that supports a head slider in a magnetic disk drive or the like so that it can fly and move in the radial direction of a disk medium, Without bending the bent shape,
The purpose of this invention is to enable the pressing force of the head slider against the disk medium to be easily adjusted to a predetermined pressing force, and to maintain a constant flying height of the head slider with respect to the disk medium. a rigid part at the tip that supports the head slider, a spring part in the center that generates a force to press the head slider against the recording disk medium, and a rear end that fixes the head slider to a support arm that moves the head slider in the radial direction of the recording disk medium. In a floating head support mechanism comprising a spring arm integrally formed with a support part, a part of the spring part of the spring arm is provided with a cut-and-raised part along the length direction of the arm, and the support arm The spring arm fixing portion is provided with a pressing member for pressing the cut-and-raised portion in the direction of the recording disk medium, and pressure adjustment means for the pressing member.

[Industrial application field]

The present invention relates to an improvement in a head support mechanism that supports a head slider in a magnetic disk drive or the like so that it can fly and move in the radial direction of a disk medium.

A floating Herad slider that records or reproduces information on a recording medium such as a magnetic disk or magneto-optical disk uses a head consisting of a load-supporting spring structure to stably float above the surface of the recording medium with a small gap. A structure supported by a support mechanism is adopted.

Such a support mechanism requires high rigidity in the access direction in order to withstand high-speed access, and in order to keep the flying height of the head slider constant, it is possible to easily adjust the pressing force of the head slider against the recording medium. A spring structure is needed.

[Conventional technology]

As shown in FIG. 3, the head support mechanism in a conventional magnetic disk device is such that a head slider 13 on which a magnetic head is mounted is attached to the tip of a spring arm 11 via a gimbal 12, and the rear end of the spring arm 11 is is fixed to the support arm 14 of the actuator.

More specifically, the spring arm 11 is composed of a tapered rigid body part 11a, a spring part 11b, and a support part 11c, which are reinforced by bending both sides to provide rigidity. As described above, the gimbal 1 that supports the head slider 13 flexibly in the rotational direction of the disk medium 17 is provided at the tip of the rigid body part 11a.
2 is fixed. Further, the support portion 11c is provided with a spacer 15.
The support arm 14 is fixed to the support arm 14 with screws 16, etc.

The spring portion 11b between the rigid body portion 11a and the support portion 11c in the spring arm 11 is connected to the head slider 13.
In order to press the disk medium 17 with a predetermined pressing force at the initial stage of driving and to keep the flying height constant during the subsequent flying period, it is formed into an R-bent shape as shown in the figure.

The R-bent shape of the spring portion 11b was obtained by bending the corresponding portion according to a pre-designed shape.

[Problem to be solved by the invention]

However, it is very difficult to accurately bend the spring portion 11b of the spring arm 11 into a predetermined R bending shape, and even if the bending process is performed accurately, the pressing force (spring force) of the head slider 13 against the disk medium 17 is extremely difficult. pressure)
There is a problem that the pressure may vary and it is not easy to adjust the pressure.

Incidentally, this problem also occurs in the support mechanism of the floating type RAD slider of the magneto-optical disk device.

In view of the above-mentioned conventional problems, the present invention does not require the spring portion of the spring arm to be bent into an R-bending shape in advance, and the spring arm can be attached to the head slider by a simple pressure adjustment operation. The object of the present invention is to provide a new supporting mechanism for a floating head that maintains a constant flying height.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention includes a rigid part at the tip that supports the head slider via a gimbal, a central spring part that generates a force to press the head slider against a recording disk medium, and a head slider. In a floating head support mechanism comprising a spring arm integrally formed with a rear end support part fixed to a support arm that moves in the radial direction of a recording disk medium, a part of the spring part of the spring arm is attached to the arm. A cut and raised portion is provided along the length direction of the supporting arm, and a pressing member for pressing the cut and raised portion in the direction of the recording disk medium is provided on the spring arm fixing portion of the support arm, and a pressure adjustment means for the pressing member is provided. The configuration is as follows.

[For production]

In the floating head support mechanism of the present invention, a part of the spring portion of the spring arm is provided with a cut-and-raised portion along the length of the arm, and the cut-and-raised portion is pressed downward, that is, in the direction of the disk medium. Since the pressing member is attached to the spring arm fixing portion of the support arm using a tightening screw, the pressing member can be cut and raised when the tightening screw is tightened, even without bending the spring portion of the spring arm into an R-bending shape. As a result, the spring portion is also bent downward together with the cut-and-raised portion, so that the spring pressure (biasing force) of the spring arm toward the disk medium side becomes stronger.

Therefore, by arbitrarily changing (adjusting) the amount of tightening of the tightening screw against the pressing member, it is possible to easily set the pressing force (spring pressure) of the head slider against the disk medium to a predetermined magnitude. As a result, the flying height of the head slider relative to the disk medium is maintained constant.

〔Example〕

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

FIG. 1 is a cross-sectional view of a main part showing an example of a magnetic head support mechanism according to the present invention, and FIG. 2 is a plan view of a main part of the magnetic head support mechanism of FIG. 1 as viewed from the disk medium side.

In both of these figures, reference numeral 21 denotes a tapered rigid body part 21a which is made rigid by bending and reinforcing both sides, and a spring part 21.
A head slider 23 is supported at the tip of the arm 21 via a gimbal 22 that flexibly supports the rotational direction of the disk medium.

In addition, an arm 21 is provided at the center of the spring portion 21b as shown in the figure.
A U-shaped cut-out portion 24 is provided in the longitudinal direction of the arm, and the support portion 11c at the rear end is fixed to the support arm 25 with a screw 26 via a spacer or the like.

At the spring arm fixing portion of the support arm 25, as shown in the figure, a bent pressing member 27 made of a thin stainless steel plate or the like is held by a tightening screw 28, the tip of which contacts the cut-and-raised portion 24 and presses it downward. The structure is such that the pressing force against the cut-and-raised portion 24 changes depending on the degree of tightening of the tightening screw 28.

In the support mechanism having such a configuration, the support arm 2
Tightening screw 28 in the spring arm fixing part of No.5
When tightened, the cut and raised part 24 of the spring arm 21 is pushed down by the tip of the pressing member 27, and the spring part 21b at that part is also bent downward, so that the spring of the spring arm 21 toward the disk medium side is pushed down. The pressure can be increased.

Therefore, by arbitrarily changing the amount of tightening of the tightening screw 28 against the pressing member 27, it is possible to easily adjust and control the pressing force against the disk medium to a predetermined level at the initial stage of driving the head slider 23. Then,
The flying height of the head slider 23 relative to the disk medium can be maintained constant.

Although the above embodiment has been described with reference to application to a magnetic disk drive, the present invention is not limited thereto and can also be applied to a support mechanism for a floating RAD slider in a magneto-optical disk drive.

〔Effect of the invention〕

As is clear from the above description, according to the floating head support mechanism according to the present invention, the spring pressure of the spring arm can be easily increased by arbitrarily changing the amount of tightening of the tightening screw that holds the pressing member. This improves the efficiency and precision of the spring press window of the spring arm, such as making it possible to easily adjust and control the pressing force of the head slider against the disk non-recording medium to a predetermined pressing force at the initial stage of driving. , it has practical effects.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main part of a magnetic head support mechanism according to an embodiment of the present invention, FIG. 2 is a plan view of the main part of the magnetic head support mechanism of FIG. 1 as viewed from the disk medium side, and FIG. FIG. 2 is a side view for explaining an example of a conventional magnetic head support mechanism. 1 and 2, 21 is a spring arm, 21a is a rigid body part, 21b is a spring part, 21c is a support part, 22 is a gimbal, 23 is a helad slider, 24 is a cut-and-raised part, 25 is a support arm, 2
Reference numeral 6 indicates a screw, 27 a pressing member, and 28 a tightening screw. Figure 2 6L AlI ki heyl: IJ! FA'1Jra? 1 lightt
i-paddle! Itll Figure 3

Claims (1)

[Claims] A rigid body part (21a) at the tip that supports the head slider (23) via a gimbal (22), and a central part that generates a force that presses the head slider (23) against the recording disk medium. Spring part (21b) and head slider (23)
In a floating head support mechanism comprising a spring arm (21) integrally formed with a rear end support part (21c) fixed to a support arm (25) that moves the spring in the radial direction of the recording disk medium, the spring A part of the spring part (21a) of the arm (21) is provided with a cut-and-raised part (24) along the length direction of the arm (21), and the spring-arm fixing part of the support arm (25) is provided with the cut-and-raised part (24). A support mechanism for a floating head, comprising a pressing member (27) for pressing the raising portion (24) in the direction of the recording disk medium, and pressure adjusting means (28) for the pressing member.