JPH0540927A - Floating type magnetic head - Google Patents

Abstract

PURPOSE:To provide a floating type magnetic head having a flexure without imparting any variation in the flatness of a slider face when the slider is fixed to the flexure. CONSTITUTION:The flexure 2 of the floating type magnetic head is formed with a transparent UV resin 10 capable of passing ultraviolet rays and also a UV curing type adhesive is used to fix the slider 1 and the flexure 2 and the resin is adhered and cured by irradiating with UV rays.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating magnetic head used for recording and reproducing data in a hard disk device.

[0002]

2. Description of the Related Art Hard disk devices are becoming smaller, such as 14 inches, 8 inches, 5.25 inches, and 3.5 inches, and their storage capacities are increasing year by year. ..

Along with the miniaturization of hard disk devices, the floating magnetic head for reading and writing data from and to the magnetic disk has undergone great changes, and the sliders and suspensions have been changing year by year as they have become smaller and thinner.

FIG. 2 is a perspective view of a standard isolated body of a magnetic head. A suspension 7 is a flexure 2 for mounting a slider 1, a load beam 3 for applying a head load, and a suspension for mounting to a hard disk device. It is composed of a mount block 4.

Further, the load beam 3 is provided with claws 6 for fixing the tube 5 passing through the coil wire C, and two claws 6 are provided on both sides of the portion where the load beam 3 and the mount block 4 are fixed.
Individually formed.

The suspension 7 is made of stainless steel (hereinafter referred to as SUS), and the slider 1 and the flexure 2 are fixed to each other with a thermosetting adhesive or
It is fixed with ultraviolet light and heat with an ultraviolet curable adhesive (hereinafter referred to as UV resin).

[0007]

According to the above-mentioned conventional structure, as the hard disk device becomes smaller, the magnetic head becomes inevitably smaller and thinner, and FIG. 3 shows a problem.

FIG. 3 is a side view of the magnetic head isolated body. As the hard disk device becomes smaller, the mounting intervals of the magnetic heads become narrower so that the magnetic heads mounted above and below the magnetic disks do not interfere with each other. In order to reduce the thickness, it is absolutely impossible to avoid it. this,
Slider 1 and suspension 7
It is conceivable to lower the total height of. However, if a slider 1 with a reduced total height is fixed to the flexure 2, it expands when the adhesive cures and the flatness of the slider 1 changes, resulting in concave or convex shapes as shown in (1) and (2) of FIG. , Curved, slider 1

[0009]

[Outer 1]

There is a possibility that recording / reproducing of data to / from the disk device will not be sufficiently carried out, and there may be a problem in the CSS (contact start stop) system.

In order to reduce the change in the flatness of the slider 1, it is possible to eliminate the change in the flatness when the adhesive 9 is hardened at a low temperature. Poor bonding strength with the flexure 2 may occur. Then, in order to guarantee the bonding strength, the adhesive has to be cured at a low temperature for a long time. In addition, the longer the curing time, the longer the lead time and the higher the cost of the magnetic head, which conflicts with the needs of the market.

Further, the fixing with the UV resin is the joining surface a of the slider 1 and the flexure 2 only with the ultraviolet rays.
A so-called ultraviolet ray is not cured so that the bonding strength cannot be guaranteed, so that the resin exposed from the flexure 2 is once cured by ultraviolet ray, and then the uncured portion is cured by heat. Again, the heat that leads to a longer lead time and a change in flatness is unavoidable.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems and to cope with the miniaturization, thinning and cost reduction of a hard disk device.

[0014]

The present invention is characterized in that a flexure of a suspension to which a slider is fixed is made of a transparent resin that transmits ultraviolet rays, and a UV resin is used to fix the slider and the flexure with only the ultraviolet rays. To do.

[0015]

According to the present invention, the flexure of the suspension to which the slider is fixed can be fixed with UV resin in only a short time with ultraviolet rays, and it is possible to reduce the change in the flatness of the slider. The characteristics of the small and thin head can be guaranteed, and at the same time, the assembly process can be rationalized and the cost can be reduced.

Thus, the size of the hard disk device is small,
It is possible to reduce the thickness and meet the market cost.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view of an embodiment in which the portion of the flexure 2 shown in FIG. 2 is enlarged.

The suspension comprises a flexure 2 for mounting a slider 1, a load beam 3 for applying a head load, and a mount block 4 (not shown) for mounting on a hard disk device.

A feature of the present invention is that the flexure 2 to which the slider 1 is fixed is made of a transparent resin that transmits ultraviolet rays. As a result of such a material structure, when the UV resin 10 is applied to the joint surface between the slider 1 and the flexure 2 and ultraviolet rays are irradiated from above the flexure 2, the so-called
Through the transparent flexure, there is no place where ultraviolet rays do not hit, and the slider 1 and flexure 2 are surely
It can be fixed. At this time, it is necessary to pay attention to the heat generated from the ultraviolet irradiation device (not shown) and install a cooling device.

[0021]

As described above, in the floating magnetic head of the present invention, the flexure of the suspension to which the slider is fixed is made of a transparent resin that transmits ultraviolet rays. The slider and flexure can be fixed in time, the change in the flatness of the slider can be reduced, and the characteristics of a small and thin floating magnetic head can be guaranteed.
At the same time, the assembly process can be rationalized and the cost can be reduced.

In this way, the size of the hard disk drive is small,
It is possible to reduce the thickness and meet the market cost.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view of a portion of a flexure according to an embodiment of the present invention.

FIG. 2 is a perspective view of a conventional floating magnetic head assembly.

FIG. 3 is a side view showing a state example when the flatness of a slider of a conventional floating magnetic head changes.

[Explanation of symbols]

1 ... slider, 2 ... flexure, 3 ... load beam, 4 ... mount block, 5 ... tube, 6
… Nail, 7… Suspension (2,3,4), 8… Magnetic disk, 10… UV resin

Claims (2)

[Claims] 1. A slider of a floating magnetic head, a flexure having the slider fixed thereto, a load beam having a tip portion fixed to the flexure, and a mount block fixed to a rear end portion of the load beam. And a coil wound around the slider core and a tube for protecting the coil from insulation, wherein the flexure of the suspension to which the slider is fixed is UV. A floating magnetic head characterized by being formed of a transparent resin through which 2. The floating magnetic head according to claim 1, wherein the slider and the flexure are fixed only by irradiation of ultraviolet rays using an ultraviolet curing adhesive.