JPS5813970B2 - Magnetic head and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head and a method for manufacturing the same, and is capable of simultaneously functioning as a shield case and a shield plate when forming a magnetic circuit by laminating a large number of magnetic plates. .

The present invention will be explained below with reference to embodiments shown in the drawings.

Figure 1 shows the magnetic plates used, where a is a plate-shaped magnetic plate, b is a frame-shaped magnetic plate with a punched frame shape in the center, and C is a plate-shaped magnetic plate.
is a frame-shaped magnetic plate with legs that is similar to frame-shaped magnetic plate b, but has two legs d and e that protrude into the frame.

Furthermore, dotted lines X and Y indicate cutting lines used when cutting in the assembly process.

Figure 2 shows abbcccb using three plate-shaped magnetic plates a, eight frame-shaped magnetic plates b, and six magnetic plates C with feet shown in Figure 1.
This shows a state in which they are stacked in the order babbcccbba and then cut using X and Y in FIG. 1 as standards or to the XY position.

In this case, simply cutting the legs d of the frame-shaped magnetic plate C with legs
.

Here, a gap is created between the chips formed by d and e by making a notch in the depth direction at a position P shown by a dotted line in FIG. 4 and inserting a spacer made of a non-magnetic material into that part.

Note that in forming this gap, before cutting to the position indicated by X, a cut may be made in the depth direction at the position P, and the cutting may be performed after inserting the spacer.

FIG. 3 shows a yoke h with a winding f corresponding to the chips formed by d and e.

In this case, the windings f may correspond to chips d and e, respectively, instead of f1 and f2, as shown in FIG.

Note that d and e may be looped as shown in S in FIG.

As described above, according to the present invention, a magnetic head with a shield case with good shielding effect can be easily manufactured by simply laminating three types of magnetic plates and forming a magnetic tape sliding surface.

Note that an insulating layer may be provided on the surface of the portion that will become the magnetic head core for interlayer insulation, or an insulating material such as insulating paper may be sandwiched and laminated.

Further, although the case of two channels is explained in FIG. 2, it is easy to use three, four, etc. channels with the same purpose.

Furthermore, since this magnetic head has a simple structure, it is easy to mechanize.

[Brief explanation of drawings]

The drawings are process diagrams for manufacturing a magnetic head according to an embodiment of the present invention, and FIG. 1 is a perspective view of the magnetic plate used, FIG. 2, and FIG.
The figure shows the manufacturing process, FIGS. 3 and 5 show the manufacturing process of the yoke and the winding, and FIG. 6 shows the magnetic plate. a... Plate-shaped magnetic plate, b... Frame-shaped magnetic plate, C... Frame-shaped magnetic plate with feet, d, e...
Leg (chip), f, f1, f2... winding, h.
·····yoke.

Claims (1)

[Claims] 1. A frame-shaped magnetic plate with legs, which includes two plate-shaped magnetic plates, a frame-shaped magnetic plate for magnetic shielding, and legs for forming a magnetic circuit that are separated after assembly and are formed protruding within the frame. The frame-shaped magnetic plate and the frame-shaped magnetic plate with feet are laminated between the plate-shaped magnetic plates so that the frame-shaped magnetic plate with feet is sandwiched between the frame-shaped magnetic plates. A magnetic head. 2 Consisting of two plate-shaped magnetic plates, a frame-shaped magnetic plate for magnetic shielding, and a frame-shaped magnetic plate with feet in which legs for forming a magnetic circuit are formed protruding within the frame, and between the plate-shaped magnetic plates. The frame-shaped magnetic plate and the frame-shaped magnetic plate with feet are laminated so that the frame-shaped magnetic plate with feet is sandwiched between the frame-shaped magnetic plates, and after lamination, one side of the laminate is cut to form the above-mentioned frame-shaped magnetic plate. A magnetic circuit is formed by making the legs independent from the frame-shaped magnetic plate with legs, and before or after the cutting, a notch is formed in the depth direction from the magnetic tape sliding surface of the foot, and this notch is made of a non-magnetic material. A method of manufacturing a magnetic head characterized by inserting a spacer to form a magnetic gap.