JPS6333235B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a magnetic head assembly.
In particular, the present invention relates to a method of manufacturing a magnetic head assembly for a fixed head type magnetic disk device.

Conventionally, a fixed magnetic head consists of a gimbal with spring properties, a load arm, and a spacer assembled at predetermined dimensional positions by spot welding, and then a core with a wire wound thereon.
The slider was an assembly held by a gimbal, and a plurality of these assemblies were attached to the frame. The gimbal assemblies are radially spaced and mounted radially from the center of the frame. Furthermore, a printed circuit board comprising read and write circuits was fixedly attached to the frame, and the ends of the windings from the core slider were connected to the circuit terminals of the printed board by soldering.

In such a so-called fix block assembly, the lead and write gaps of the core slider attached to the gimbal must be positioned with high precision in the radial direction of the frame in accordance with the track of the magnetic disk. It was necessary to perform spot welding of the gimbal, load arm, and spacer with high precision.

Incorrect mounting of the core slider has the disadvantage that adjacent track information on the magnetic disk is read as noise, and furthermore, there is the disadvantage that thermal off-track occurs, leading to read errors. Moreover, since there are many parts to be assembled and the processing procedure is complicated in multiple steps, there is a drawback that careful consideration and skill are required for highly accurate positioning.

The object of the present invention was made in view of the above problems, and aims to shorten processing time and simplify assembly.
As a result, it is possible to improve processing accuracy after assembly.

In order to achieve the present invention, a method of manufacturing a magnetic head assembly according to the present invention involves preparing a thin veneer having spring properties, and performing punching treatment at predetermined intervals to correspond to the tracks of a magnetic disk. A load arm is formed by forming a plurality of tongue shapes consisting of a root portion, a side portion, and a tip portion, and bending the side portions of each of the plurality of tongue shapes, and the tip portion faces the root portion side. A gimbal portion was formed by bending the vicinity of the tip of the load arm inward so that the tip of the load arm was facing the same direction, and a core slider with a wound wire was attached and fixed to the bent tongue-shaped tip. It is characterized by
This will be explained below with reference to the drawings.

FIG. 1 is a plan layout diagram of a magnetic head support part according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a thin springy veneer, 2 a support part, and the support part 2 is aligned with the track position of the magnetic disk (see Fig. 3).
Arrange multiple pieces in a concentric spiral pattern.

2 is a diagram of the processed shape of the support portion in FIG. 1, in which a is a tongue-shaped view, b is a plan view of the support portion, and c is a side view of the support portion. In the figure, a thin veneer 1 is notched by etching or press punching to create a notch 3, which forms the original shape of the support part 2, which has a root part 20a, a side part 20b, and a tip part 20c. A tongue shape 20 is formed.

The side portion 20b is bent in the same direction to form a rigid load arm 7, the tip portion 20c is bent to embrace the hemispherical pivot 6 to form a hairpin-shaped gimbal portion 5, and the root portion 2 is bent to form a hairpin-shaped gimbal portion 5.
0a is given an R bend and the gimbal part 5 is raised to form a pressurizing part 4 that gives an opening angle to the thin veneer 1 and the support part 2.

FIG. 3 is a structural diagram of the magnetic head assembly in FIG.
A′ side view. In the figure, 13 is a core slider with wire winding, 8 is a core slider 13
read/write gap, 50 is a magnetic head, 10 is a magnetic disk, 9 is a magnetic disk 10
11 is a frame, and 12 is a printed board.

The core slider 13 is adhesively fixed to the flat surface of the gimbal section 5 (FIG. 2) of the support section 2 (FIG. 2).
This fixed position is a position where the center of the read/write gap 8 coincides with the center of the track 9. The core slider 13 has three read/write gaps 8, each read/write gap 8 independently takes charge of a track 9, and one support part 2 (FIG. 2) has three magnetic heads 50. It is provided. Therefore, if there are n tracks 9 on the surface of the magnetic disk 10, n magnetic heads 50 are also required, so n/3 number of supporting parts 2 (FIG. 2) may be provided. The thin veneer 1 is fixed to a frame 11 in which a portion corresponding to the installation position of the magnetic head 50 is cut out by spot welding or adhesive, and a printed board 12 on which a circuit is mounted.
is attached to the back of the frame 11. The tip of the winding (not shown) of the core slider 13 and the circuit terminal (not shown) are half-marked.

According to this embodiment, the tongue-shaped support portion can be easily processed and the positioning accuracy can be improved.

The arrangement position of the tongue shape according to the present invention is not limited to this embodiment. For example, instead of a spiral arrangement, a wave arrangement is also possible, as long as the arrangement can cover all track positions on the magnetic disk. good.
Further, the shape of the support portion is not limited to this embodiment, and any shape and structure may be used as long as the load arm portion has rigidity and the core slider of the gimbal can be held with a predetermined springiness.

As described above, according to the present invention, a plurality of magnetic head assemblies can be constructed by processing substantially one thin veneer, and in particular, the core slider mounting portion can be formed from the same thin veneer. Since it is formed by bending, the head spring rigidity is improved and stability during levitation is improved.

[Brief explanation of the drawing]

Figure 1 is a plan view of the arrangement of the magnetic head support section;
Figure a is a diagram of the tongue shape, Figures 2b and c are diagrams of the processed shape, b is a plan view, c is a side view, and Figure 3 is an assembled view, in which a is a plan view and b is a side view. A cross-sectional view,
In the figure, 1 is a thin veneer, 20 is a tongue, 4 is a pressurizing part, 5 is a gimbal part, 7 is a load arm, 13
1 is a core slider, 8 is a read/write gap, 9 is a track, 10 is a magnetic disk, 11 is a frame, 12 is a printed board, and 50 is a magnetic head.

Claims (1)

[Scope of Claims] 1. A thin veneer 1 having spring properties is prepared, and is cut out at predetermined intervals so as to correspond to the tracks of the magnetic disk, starting from the base portion 20a, side portions 20b, and tip portion 20c. A plurality of tongue shapes 20 are formed, and the side portions 20b of each of the plurality of tongue shapes 20 are bent to form the load arm 7, and the tip portion 20c is oriented toward the root portion 20a side. , the tip 20c of the load arm 7
The gimbal portion 5 is formed by bending the vicinity of the side inward, and the tip portion 20 of the bent tongue shape 20 is
A method for manufacturing a magnetic head assembly, characterized in that a core slider 13 having a wire wound thereon is attached and fixed to the core slider 13.