JPH0472284B2 - - 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 symbol 1
1 is a shield case, into which the magnetic head element body 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.

First Embodiment FIGS. 2A and 2B illustrate a first embodiment of the present invention, in which the cores 12 and 12' are each one side of the core, and each core is made of one magnetic plate or It is constructed by laminating a plurality of magnetic plates, and each core has abutting surfaces 12a, 12b and 1.
2'a and 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 uniformly polished in advance.
Also, the abutment surfaces 12a, 12b and 12'a, 1
Holes 12c and 12'c are provided at the midpoint of the cores 12, 12' away from 2'b. To the hole 12c, 7b is 1
2'c. 15 is a bobbin assembly.

In the core matching method according to this embodiment, first, the matching surfaces 12a and 12'a of the cores 12 and 12',
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, and the surfaces 12a and 12'a and 12b and 1 are formed.
2'b are brought into close contact with each other, the bent portion 7a of the butting spring 7 is inserted into the hole 12c, and the other bent portion 7b is inserted into the hole 12'c, and then bonded or welded. This state is the second state.
This is the butt core shown at 8 in Figure B.

Next, although not shown in the drawings, either one of the left and right supports is attached to the abutment core 8, and then fitted into a shield case, also not shown.

Second Embodiment FIGS. 3A and 3B are for explaining a second embodiment of the present invention. Corresponding parts are denoted by the same reference numerals, and their explanations will be omitted.

In this embodiment, hole 1 in the first embodiment is
Grooves 12d and 12'd replace grooves 2c and 12'c,
Abutting surfaces 12a, 12b and 12'a, 1
2'b, and is provided at an intermediate position away from those planes, and the curved parallel portion 17a of the butting spring 17, which is made of a plate made of non-magnetic material and bent into a U-shape, is in the groove. 12d, the other bent portion 17b is configured to fit into the groove 12'd.

The core abutting method according to this embodiment is carried out in such a way that the abutting surfaces 12a and 12'a, and 12b and 12'b face each other as in the case of the first embodiment, and the surface 12b is inserted into the through hole (not shown) of the bobbin assembly 15. and 1
2'b to connect surfaces 12a and 12'a, and 1
While keeping 2b and 12'b in close contact with each other, insert the bent portion 17a of the butt spring 17 into the groove 12d.
Then, insert the other curved part 17b into the groove 12'd.
It is fitted to the base and glued or welded. The abutted core shown at 18 in FIG. 3B is in such a state. Thereafter, although not shown in the drawings, one of the left and right supports is attached to the abutting core 18, and then fitted into the shield case, also not shown.

Effects As is clear from the above explanation, according to the magnetic head of the present invention, the cores can be securely fixed to each other via the U-shaped non-magnetic butting spring, so the cores can be fixed together and then supported. can be incorporated into. Therefore, many abutting surfaces of the core can be polished at the same time before the core is installed in the support, and more abutting surfaces can be polished at the same time than in the conventional case where the core is attached to the support and then the abutting surfaces of the core are polished. Can be polished.

Also, since the single cores are fixed together using non-magnetic springs and assembled into the support after gluing or welding as necessary, it is not necessarily necessary to have both the left and right supports, and the cores can be butted and assembled on only one side. The problem is that even if a defect is discovered later, at least the support is not wasted, which has an excellent effect on reducing costs and improving work efficiency.

[Brief explanation of drawings]

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. 2A and B are exploded perspective views illustrating a first embodiment of the present invention. Figure and perspective view after assembly, Figure 3A,
B is an exploded perspective view and an assembled perspective view illustrating a second embodiment of the present invention. 1... Shield case, 2, 2', 12, 1
2'...Core, 3,3'...Support, 4,4'...
... Core support, 5, 15 ... Bobbin assembly, 6
...Magnetic head element, 7, 17... Butt spring, 8, 18... Butt core.

Claims (1)

[Claims] 1 Form a surface or linear groove parallel to the abutting surface on each of the abutted cores, fit and fix both ends of a U-shaped non-magnetic abutment spring into the groove, respectively. A magnetic head characterized in that it is incorporated into a support member and housed in a case.