JPS5830667B2 - magnetic head support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support device for a floating magnetic recording/reproducing head, which is provided facing a high-speed magnetic recording medium such as a magnetic disk or a magnetic drum, and is suitable for a magnetic head, particularly a contact start method.

It is necessary for the flying raft magnetic head to maintain a constant flying height of usually 0.1 to 0.3 μm between the magnetic head and the recording medium while the recording medium is rotating.

In order to achieve this constant increase in thickness, the conventional head support device attaches the head to the tip of a leaf spring 2 for generating supporting force, as shown in Fig. It is constructed so that it can be appropriately curved or bent and deformed depending on the work, and the opening can be adjusted using an adjustment screw 5.

However, in the former case, there are many variations in the product, making it impossible to obtain uniform performance.In addition, in the latter case, the structure is complicated, and when the magnetic head is moved, there is a problem in the direction of movement. It has drawbacks such as easy rolling.

The main object of the present invention is to provide a magnetic head support device with uniform quality and performance, in which a pressure-generating plate spring is fixed to a holder by tilting it in a line at a predetermined angle. A head and a slider are provided protrudingly on a tongue piece formed by punching out a part of the plate spring from its tip side, or a flap is further punched out on the tongue piece, and a head slider board is attached to the flap. By fixing the head support device, it is possible to stably maintain a constant flying height from the recording medium and eliminate manual processing during the manufacturing process, making it possible to mass-produce a head support device with uniform performance.

The present invention will be explained below with reference to drawings of embodiments.

First, in FIG. 2, the holder 10 is positioned on the base 7 by a center pin 8 and fixed by a screw 9.

The rear end 11 of the holder has a predetermined inclination angle θ with respect to the horizontal plane of the holder 10 in order to fix the base end of the leaf spring 12.
An inclined mounting surface or leaf spring fixing surface 13 is provided.

Further, as shown in FIG. 3, a tongue piece 15 for attaching the head slider to the board is punched out in a U-shape 16 at the tip end portion 14 of the leaf spring, leaving a connecting portion 17 on the edge side of the tip end. It is bent at 17 and formed horizontally.

The leaf spring 12 according to the present invention is extended and held in a straight line from the fixed part surface 13 to the distal end side connecting part 17 while maintaining the predetermined inclination angle.

Reference numeral 18 indicated by a dotted line is a fixing portion of the head slider substrate, and a head slider substrate 19 is fixed to this portion.

Usually, the head 20 and slider 21 are first attached to a substrate 19 and the substrate is fixed to the tongue.

This fixing method can be carried out either by placing the tongue on the front surface or by penetrating and protruding from the back surface. In the former case, it is necessary to drill a lead wire hole for the head coil in the tongue, but in the latter case In this case, it is necessary to respectively drill the head through hole 20' and the slider through hole 21'.

Of course, it is also possible to directly fix the head and slider to the tongue piece.

The leaf spring 12 of the device of the present invention configured as described above is driven from the upper tip to the rear end, maintaining a straight shape at a constant inclination angle without bending or curving from the fixed portion 13 to the tip. A head 20 and a slider 21 are attached to the horizontal tongue piece 15
Since it is fixed, it is easy to manufacture, and there are no bent parts except for the tongue connecting part 17, so a head support device with uniform spring characteristics can be mass-produced.

FIG. 4 shows a leaf spring of another device according to the invention, which provides a head support device with higher performance than the device described above.

That is, at the same time as the tongue piece 15 is formed, a flap 23 having substantially the same shape as the head slider board is formed by punching out the punched parts 24 and 25, and the tongue piece and the flap are connected through the center connecting part 26. It is connected.

The connecting portion 26 between the flap and the tongue piece has both ends 2 with the central axis corresponding to the horizontal center axis A of the head slider board.
It is set in each location.

The method of fixing the head and slider or their mounting board to the flap is the same as described above, but according to this method, the head etc. are first movably supported by the flap relative to the tongue piece, and then the tongue piece is supported by a leaf spring. Since the tip is elastically supported, the head, etc. is supported by three spring members with respect to the holder 10 in Fig. 2, so it is less affected by external vibrations and is stable. This allows the gap spacing to be maintained.

In the present invention, the flap and the tongue piece are formed at the same time, so the number of manufacturing steps is the same, and since the flap and the tongue piece are formed in the same plane, they also have no bent part.

In the present invention, the plate spring inclination angle .theta., which is effective for obtaining the flying height normally required for stably and reproducibly reproducing and recording magnetic recording signals, is 3.degree. to 25.degree. according to experiments.

Incidentally, when θ is less than 3 degrees, the air working pressure increases and the flying height increases, and it becomes impossible to maintain a constant flying height, and when θ exceeds 25°, the flying height decreases and comes into contact with the magnetic recording medium. There is a risk of

Therefore, the device of the present invention in which the head support leaf spring is tilted linearly at a predetermined angle can maintain a preferable gap between the magnetic medium and the magnetic head in combination with the cushioning action of the horizontal tongue, and therefore the sound can be improved. Images and other information signals can be stably recorded and reproduced.

In the present invention, any means for fixing the leaf spring 12 to the holder 10 may be used, such as adhesive or screw fixing.

[Brief explanation of drawings]

FIG. 1 is a side view of a conventional device, FIG. 2 is a side view of the device of the present invention, and FIGS. 3 and 4 are enlarged plan views of a leaf spring used in the device of the present invention. 10 is a holder, 12 is a plate spring, 13 is a spring fixing part surface,
15 is a tongue piece, 19 is a head slider board, and 23 is a flap.

Claims (1)

[Scope of Claims] 1. A floating magnetic head support device in which a magnetic head and a slider are fixed and supported at the tip of a leaf spring, and the base end of the leaf spring is fixed to an inclined mounting surface at a predetermined angle. , the tip of the leaf spring is punched out in a U-shaped Z shape leaving a connecting portion on the edge of the tip to form a tongue piece for attaching the head and slider board, and the leaf spring extends from the connecting portion on the edge of the tip to the base end. 1. A magnetic head support device, wherein the tongue piece is held in a straight line at a predetermined angle on an inclined mounting surface, and the tongue piece is bent at a connecting portion to be horizontal. 2 The angle of inclination of the inclined mounting surface at the base end of the leaf spring is 3° to 25°.
The device according to claim 1. 3. The device according to claim 1 or 2, wherein the head and slider are directly fixed to the horizontal tongue piece. 4. In a floating magnetic head support device in which a magnetic head and a slider are fixed and supported at the tip of a plate spring, and the base end of the plate spring is fixed to an inclined mounting surface at a predetermined angle, the tip of the plate spring is is punched out in a U-shape leaving a connecting portion on the tip edge side to form a tongue piece for attaching the head and slider board, and the leaf spring has a predetermined angle of the inclined mounting surface from the tip edge side connecting portion to the base end. The tongue is held in a straight line at the connecting portion, and the tongue is bent at the connecting portion and formed horizontally, and within the horizontal tongue there are two places at both ends with the central axis corresponding to the horizontal center axis of the head slider board. 1. A magnetic head support device characterized in that a flap 23 is formed by punching out a connecting portion 26 of the magnetic head. 5 The angle of inclination of the inclined mounting surface at the base end of the leaf spring is 3° to 25°.
The device according to claim 4. 6. The device according to claim 4 or 5, wherein the head and slider are directly fixed to the flap.