JPH0743767Y2 - Ring type magnetic head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a ring type magnetic head used in a magnetic tape recorder, a magnetic card reader and the like.

<Prior Art> FIG. 4 shows an example of a ring-type magnetic head that has been conventionally used in magnetic tape recorders, magnetic card readers, and the like.

As shown in the drawing, the winding 6 is wound around a straight portion having an arcuate cross-section with both ends bent, and a thin magnetic gap made of non-magnetic material is attached to one end of the two magnetic cores 5a, 5b mounted on the holder 7. A magnetic head element 10 was formed by sandwiching the material 8 to form a magnetic gap, and abutting it with the other end and passing it through the holder 7 with two screws 9. Further, the magnetic head element 10 is housed in a shield case 12 penetrating a window 11 through which the magnetic gap portion is exposed, fixed with resin, and then the magnetic gap portion is polished into an arc shape to form a ring-type magnetic head. It had been.

<Problems to be solved by the invention> However, in the conventional magnetic head, two magnetic cores 5a, 5
When the screw 9 for forming the magnetic gap 8 by abutting b is tightened, the screw 9 cannot be positioned and the two magnetic cores 5a and 5b are twisted, which requires time for the assembling work. Further, when tightening, the tip of the screw 5 comes into contact with the portion of the winding 6 to cause damage or disconnection of the wire, resulting in poor quality and poor reliability.

<Means for Solving the Problems> In the present invention, except for the above-mentioned drawbacks, the present invention has two magnetic cores 5 wound in a portion close to a straight line having a curved cross section with both ends bent.
Two screw guides provided with through holes through which the screw 9 is inserted between two holders 7a and 7b for clamping and fixing both ends of a and 5b with screws 9 for butting and tightening are connected at a constant interval. It is a ring type magnetic head that supports two magnetic cores 5a and 5b by being sandwiched by an H-shaped support tool that is connected by the above and is integrally molded by an insulating material.

<Operation> The two screw guides of the support device sandwich both side surfaces of the two magnetic cores 5a and 5b, and the screw guides position the two screws 9 respectively, so the magnetic cores 5a and 5b should be twisted. Butt and the screw 9 can be easily tightened.

<Embodiment> An embodiment of the ring type magnetic head of the present invention is shown in FIGS. 1, 2 and 3.

As shown in FIG. 2, the support 1 used in the magnetic head according to the embodiment of the present invention has a length between two holders 7a and 7b, and a through hole 2 through which a screw 9 is inserted is provided at the center. A connecting member 4 is erected integrally in the center with an interval of two cylindrical screw guides 3 in contact with both sides of the magnetic cores 5a, 5b, and is molded into an outer shape H with an insulating material.

As shown in FIG. 1, this support 1 has two magnetic cores 5a, 5b having an arcuate cross section in which both ends are bent and windings 6 are wound around straight portions.
The outer side surfaces of the gaps are held in contact with and supported by the inner side surfaces of the support 1 so that the magnetic gap members 8 are abutted against the tips of the magnetic cores 5a and 5b. In addition, two holders 7 sandwich the support 1 to hold the magnetic cores 5a and 5b, and the screw guide 3
The screw 9 is passed through the through hole 2 and the magnetic cores 5a and 5b are tightened together with the holders 7a and 7b to form the magnetic head element 10. As shown in FIG. 3, the magnetic head element 10 is mounted in a shield case 12 having a window 11 through which a magnetic gap is projected, is filled with resin, and the magnetic gap portion is polished into an arc shape to form a ring type magnetic head. can get.

<Effect of the device> As described above, according to the present invention, when the magnetic cores 5a, 5b and the holders 7a, 7b are butted and fixed by the screw 9, the screw 9 comes into contact with the winding wire and the wire is damaged. In addition, the positioning of the screw 9 is facilitated, and a highly reliable ring-type magnetic head with excellent workability can be obtained.

[Brief description of drawings]

1 is an exploded perspective view of a magnetic head element in an embodiment of a ring type magnetic head of the present invention, and FIG. 2 is a support for supporting a magnetic core, a holder, and a tightening screw when tightening the holders in FIG. FIG. 3 is an external perspective view of the magnetic head element shown in FIG. 1, and FIG. 3 is an external perspective view of the shield case of FIG. It is an external appearance perspective view of a head element and an external appearance perspective view of a shield case. In addition, 1: support, 2: through hole, 3: screw guide, 4: connecting member, 5a, 5b: magnetic core, 6: winding, 7: holder, 8: magnetic gap material, 9: screw, 10:
Magnetic head element, 11: Window, 12: Shield case.

Claims (1)

[Scope of utility model registration request] 1. A winding 6 is wound around a part of an arcuate cross section, and both side surfaces of two magnetic cores 5a, 5b which are butt clamped and fixed by a holder 7 tightened by a screw 9 are held, A ring-type magnetic head comprising a support tool (1) formed by connecting a plurality of screw guides (3) having through holes (2) through which connecting members (9) are connected by a connecting member (4) and integrally molding with an insulating material.