JPS59168912A - Magnetic head - Google Patents

Abstract

PURPOSE:To constitute a titled head so that at least a support is not wasted even in case there is a defect after a head base body is assembled, by sticking or welding a butted core through a nonmagnetic plate, incorporating it in one support, and containing it in a case. CONSTITUTION:First of all, butted surfaces 12a, 12'a and 12b, 12'b of a core 12 and 12' are opposed to each other, the surface 12b and 12'b are inserted through a through-hole which is not shown in the figure, of a bobbin assembly body 15, and in a state that the surface 12a and 12'a, and 12b and 12'b are made to adhere tightly to each other, a nonmagnetic plate 7 is stuck or welded to both side faces of the core 12 and 12'. Subsequently, a magnetic head base body 16 is formed by attaching one support 14 to one side of a butted core 8, and it is fitted into a shielding case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a magnetic head, and more particularly to a magnetic head in which a pair of left and right cores are butted and fixed and incorporated into one core support.

PRIOR ART A magnetic head is manufactured by the conventional magnetic head core matching method according to the order shown from top to bottom in FIG. That is, what is designated by the reference numeral 1 in FIG. 1 is a shield case, into which the magnetic head element 6 is fitted.

As shown in the upper part of FIG. 1, this magnetic head element 6 is constructed by first assembling cores 2 and 2' into supports 3 and 3' to form core supports 4 and 4', and coil terminal conductors 5'.
A magnetic head element 6 is formed by sandwiching the bobbin assembly 5 including the core sabots 4 and 4' and bonding them together. With this manufacturing method, if the magnetic head element 6 becomes defective, the component parts (cores 2, 2', supports) 3
, 3', in order to remove the defective part of the bobbin assembly 5, etc. and reuse the remaining defect-free parts, it is necessary to peel off the adhesive of the core support 4, 4'. It was quite difficult to prevent defects from remaining even when peeled off. Therefore, if a defect in the -H magnetic head element 6 is discovered, all of its component parts are wasted.

Purpose The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional art, and an object of the present invention is to provide a magnetic head in which at least the support is not wasted even if there is a defect after the head element is assembled. There is.

EXAMPLES The present invention will be described in detail below based on examples shown in the drawings.

Figures 2 (3), (B) and Figure 3 illustrate one embodiment of the present invention. In Figure 2, 12 and 12' are each one side of the core, and each core is a magnetic It is constructed by laminating a plate or a plurality of magnetic plates, and each core has abutting surfaces 12a, 12b and 12'a.
, 12'b are formed. These abutting surfaces are arranged horizontally in large numbers so that the same surfaces face in the same direction, and are polished together in advance.

Reference numeral 7 denotes a non-magnetic plate, which is bonded or welded to fix the cores together when the cores 12 and 12' are butted together, which will be described later. 9 indicates welding marks formed by laser welding or spot welding.

The bobbin assembly 15 having the coil terminal conductor 15' includes:
Although not shown in the figure, a through hole is provided through the center of the hole.

14 is a support for holding the butt core 8.

In the core matching method according to this embodiment, first, the matching surfaces 12a and 12'a, 12b of the cores 12 and 12' are
The surfaces 12b and 12'b are inserted into the through hole (not shown) of the bobbin assembly 15 so that the surfaces 12b and 12'b face each other.
While a and 12'a and 12b and 12'b are brought into close contact with each other, non-magnetic plates 7 are adhered or welded to both sides of the cores 12 and 12'. This state is the butt core shown by 8 in FIG.

Next, as shown in FIG. 3, the butt core 8
One support 14 is attached to one side (the right side in FIG. 3) to form a magnetic head element 16, which is fitted into the shield case 1.

Effects As is clear from the above explanation, according to the present invention, it is possible to polish a large number of core abutting surfaces at the same time in advance. It is possible to do more polishing at one time than with other methods. Also, since the single cores are bonded or welded together via a non-magnetic plate and then assembled into the support, it is not necessarily necessary to have both left and right supports, and it is sufficient to assemble the magnetic head element only on one side before assembling it into the case. Even if a defect is discovered later, at least the support will not be wasted, so this has excellent effects in terms of improving work efficiency and reducing costs.

[Brief explanation of drawings]

FIG. 1 (4) is an exploded perspective view explaining a conventional structure, FIG. 1 (B) is a perspective view of a magnetic head element and a shield case, and FIGS. 2 and 3 illustrate an embodiment of the present invention. to do,
Figure 2 (4) is a perspective view of the core, Figure 2 (B) is a perspective view of the assembled core, and Figure 3 is a perspective view illustrating how to attach the magnetic head element to the shield case. . 1... Shield case 2.2'... Core 3.3'
... Support 4.4' ... Core support 5.15.
...Bobbin assembly 6,16...Magnetic head element 7.
...Non-magnetic plate 8...Butt core 12.1
2'...Core 14...Support Fig. 2 (A
) 3rd u Toki

Claims (1)

[Claims] A magnetic head characterized in that abutted cores are bonded or welded via a non-magnetic plate, assembled into one support, and housed in a case.