JPH0328723B2 - - Google Patents

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 Magnetic heads have been manufactured by the conventional magnetic head core matching method according to the sequence shown in FIGS. 1A and 1B. That is, in FIG. 1B, the reference numeral 1 indicates a shield case, into which the magnetic head element 6 is fitted.

As shown in FIG. 1A, this magnetic head element 6 first incorporates cores 2 and 2' into supports 3 and 3' to form core supports 4 and 4', and includes a coil terminal conductor 5'. A magnetic head element 6 is formed by sandwiching the bobbin assembly 5 and bonding the core supports 4, 4'. With this manufacturing method, if the magnetic head body 6 becomes defective, any of the component parts such as the cores 2, 2', supports 3, 3', bobbin assembly 5, etc. In order to remove the parts and reuse the remaining defect-free parts, it is necessary to peel off the adhesion of the core supports 4, 4', which are adhered to each other, and make sure that no defects remain even after peeling. was quite difficult. Therefore, once a defect in the magnetic head element 6 is discovered, all of its component parts are wasted.

Purpose The present invention was made in order to eliminate the above-mentioned drawbacks of the conventional magnetic head, and its purpose is to provide a magnetic head in which at least the support is not wasted even if there is a defect after the head body is assembled. There is.

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

2 and 3 illustrate one embodiment of the present invention. In FIG. 2, 12 and 12' are each one side of a core, and each core is made of one magnetic plate or a plurality of magnetic plates. It is constructed by laminating
Each core is also formed with abutting surfaces 12a, 12b and 12'a12'b. These abutting surfaces are arranged horizontally in large numbers so that the same surfaces face in the same direction, and are uniformly polished in advance. Reference numeral 15 denotes a bobbin assembly, and a through hole 15c is provided through the bobbin assembly approximately at its center. 15a, 15
b is a coil terminal conductor.

In Fig. 3, reference numeral 13 denotes a threaded pin made of a non-magnetic material with a hole 13a extending long through the axis in the center thereof, and a male thread 13b on one side.
is provided. Numeral 14 is a nut also made of a non-magnetic material that fits into the male thread 13b.

In the core matching method according to this embodiment, first, the cores 12 and 12' are inserted into the through hole 15c of the bobbin assembly 15 so that the butting surfaces 12b and 12'b face each other.
2'a are brought into close contact with each other, the cores 12, 12' are fitted into the groove 13a of the threaded pin 13, and the nut 14 is screwed into the male thread 13b so that the nut surface 14a is brought into close contact with the back surface 12c of the core, as appropriate. Tighten and secure it to the extent that the pressure of . This state is shown in FIG.

Thereafter, although not shown in the drawings, the magnetic head element is attached to either the left or right side of the support, and then fitted into a seal case (not shown).

Effects As is clear from the above description, the magnetic head of the present invention includes abutted cores, a non-magnetic pin member having a groove portion and a threaded portion into which the cores are fitted, and the pin member. and a non-magnetic nut member that is screwed into the threaded part of the pin member, and the core is pressed and fixed by the nut member into the groove part of the pin member to form a magnetic head element. With a simple structure using members, the abutted cores can be easily fixed by tightening the nut member, and there is no need to form holes or the like in the cores for fixing. Since it is only necessary to assemble the magnetic head element and then incorporate it into the support, it is not necessary to have both the left and right supports, and it is sufficient to assemble the magnetic head element only on one side and then assemble it into the case. Even if it is discovered, at least the support will not be wasted, and the abutment surface of the core can be polished in advance on the core alone, rather than being polished after attaching it to the support as in the conventional case. Since polishing work can be performed by stacking a large number of cores in the same direction, work efficiency can be improved and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1A is an exploded perspective view illustrating a conventional structure, FIG. 1B is a perspective view of a magnetic head element and a shield case, and FIGS. 2 and 3 are illustrative of an embodiment of the present invention. FIG. 2 is an exploded perspective view, and FIG. 3 is a perspective view illustrating an assembly method. 1... Shield case, 2, 2'... Core, 3,
3'...Support, 4,4'...Core support, 5,1
5... Bobbin assembly, 6, 16... Magnetic head element body,
12, 12'...Core, 13...Screw pin, 14...Nut.

Claims (1)

[Claims] 1 A non-magnetic pin member having butted cores, a groove portion and a threaded portion into which the cores are fitted, and a non-magnetic nut member threaded into the threaded portion of the pin member, A magnetic head characterized in that the core is press-fixed into the groove of the pin member by a member to form a magnetic head element.