JPH0248968Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention consists of two magnetic cores that are butted against each other, and one side of the bobbin on which the winding wire provided on one of the magnetic cores is wound is placed inside the shield case. It is a magnetic head that extends to the side.

(Prior Art) A magnetic head that records and reproduces signals from a magnetic medium conventionally has a C-shaped magnetic core 1 and an I-shaped magnetic core 8 around which a winding 2 is wound, as shown in FIG. and are fixed to the holder 3 with adhesive so that the tip portion protrudes slightly. These two magnetic cores 1,
A spacer such as a titanium foil is sandwiched at the tip of the magnetic head 8 to form a magnetic gap 4, and the screw 5 is tightened through the holder 3, and the magnetic gap 4 is provided at the tip to form a magnetic head assembly. Furthermore, this assembly is housed in a shield case 6, and a leaf spring 7 is installed in the gap between the inner wall surface of the shield case 6 and the outer wall surface of the holder 3.
is inserted and positioned. Thereafter, a resin is injected into the shield case 6 and fixed, and then the outer surface of the magnetic gap 4 and its vicinity is polished into an arc shape to form a magnetic head.

(Problem to be solved by the invention) In a conventional magnetic head, when an assembly in which two magnetic cores 1 and 8 are butted together is housed and fixed in a shield case 6 by a leaf spring 7, the assembly and shield The positional relationship with the case 6 depends on the thickness of the leaf spring 7 and the degree of curvature. Therefore, during assembly, errors occur in the mechanical positional relationship between the magnetic gap 4 and the shield case 6, and great care must be taken in fixing them in order to obtain a uniform product.

(Means for solving the problem) In order to eliminate such drawbacks of the conventional method, the present invention
In a magnetic head assembled by butting together magnetic cores 1 and 8 provided with bobbins wound with a A magnetic head that stretches and winds the wire.
The purpose is to facilitate assembly and obtain uniform mechanical precision.

(Function) According to the present invention, since the flanges of the bobbin are in contact with both side walls of the shield case 6, the flanges determine the positional relationship between the magnetic head assembly and the shield case 6, thereby preventing unstable mechanical positioning. The leaf spring 7 becomes unnecessary.

(Embodiment) As shown in FIG. 1, an embodiment of the magnetic head of the present invention is such that the surfaces of flanges 10 and 10' protruding from both upper and lower end surfaces of a winding core 9 into which an I-shaped magnetic core 8 is penetrated are opposed to each other. A recess 11 into which the C-shaped magnetic core 1 is inserted is carved from the edge thereof, and the outer dimension of the collar 10 is made the same as the dimension between both inner walls of the shield case 6. Further, an input/output terminal 12 is embedded and protrudes from the lower surface of the collar 10', and a bobbin 13 is formed of an electrically insulating material.

Now wind the winding 2 on this bobbin 13,
Connect both ends of the terminal to the terminal 12 as lead wires.
The I-shaped magnetic core 8 is inserted into the winding core 9 of this bobbin 13, and the other C-shaped magnetic core 1 is fitted into the recess 11, and the C-shaped magnetic core 1 and the I-shaped magnetic core 8 are butted together. Apply resin to the connecting surfaces, butt the two magnetic cores 1 and 8 together while maintaining their relative positions with a jig, sandwich a spacer such as titanium foil at the tip to form the magnetic gap 4, and perform curing to assemble the magnetic head. A solid is formed. The assembled and fixed magnetic head assembly is stored in the shield case 6, positioned with the shield case 6, and after injecting resin into the shield case 6 and solidifying it, the magnetic gap 4 and its surrounding outer surface are shaped into an arc shape. A magnetic head is obtained by polishing.

(Effects of the invention) As described above, according to the invention, when storing and positioning the magnetic head assembly in the shield case 6, the plate springs 7 are not used as in the conventional case, and both edges of the bobbin 13 are Since the position within the shield case 6 is determined by , assembly is easy, uniform products can always be obtained, and productivity and reliability can be improved.

[Brief explanation of the drawing]

FIG. 1 is an external front view of a magnetic head assembly according to an embodiment of the present invention, FIG. 2 is an external perspective view of a magnetic head according to the present invention, and FIG. 3 is a longitudinal sectional front view of a conventional magnetic head. be. In addition, 1, 8...magnetic core, 2...winding, 3...holder, 4...magnetic gap, 6...shield case, 9
... core, 10... tsuba, 13... bobbin.

Claims (1)

[Scope of utility model registration request] A magnetic head assembly is constructed by storing a magnetic head assembly in which a magnetic gap 4 is formed by abutting an I-shaped magnetic core 8 around which a winding 2 is wound and a C-shaped magnetic core 1 with a space in between at the tip, in a shield case 6. At the head, a part of the collar 10 protruding from both end surfaces of the winding core 9 into which the I-shaped magnetic core 8 is penetrated is extended to the inner wall of the shield case 6 via the opposing C-shaped magnetic core 1. A magnetic head comprising a bobbin 13.