JPS59151331A - Magnetic head - Google Patents

Abstract

PURPOSE:To prevent an edge part of a core itself from being chipped off and to attain ease of management of a tilt angle of the azimuth recording system by providing a slant part to a fitting base side without providing a tilted gap to the magnetic core itself. CONSTITUTION:Left and right magnetic core block halves 1, 2 are butted the same as a conventional method and the butted halves are cut off from a cutting face having an angle of 90 deg. to a gap line as shown in broken lines E-E' and F- F'. The magnetic core single body 9 thus obtained is a magnetic core single body having corners being at a right angle and the said gap part is vertical. On the other hand, a fitting face of a projecting piece 7a for fitting magnetic core provided protrusively to the ridge of a fitting base 7 forms a slant face of +theta or -theta deg.. The magnetic core single body 9 on which a magnet wire is wound is fixed to the projecting piece 7a of the fitting base 7 obtained in this way by means of soldering or the like. A caption 10 is a printed circuit board.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to magnetic heads, and more specifically to l'18 recording and re-recording using an azimuth recording method used to easily achieve high-density recording such as in a heat recorder recorder. This invention relates to a magnetic head used in a playback device.

Prior Art A magnetic spatula (1) used for the purpose of arranging a magnetic cap at an angle and preventing interference from adjacent recording racks.
・is an azimuth recording method (called magnetic \tsuto).

Conventional magnetic heads of this type have been manufactured as shown in FIGS. 1 to 4. The illustrated example is a magnetic head made of ferrite for use in a stereo tape recorder.

That is, first, the magnetic core l]tsuk halves 1゜2 are butted together, and a magnetic key A/tub ← is provided at the joining boundary.
The track width Tw is adjusted so that the deviation between both blocks is reduced, and molten glass is poured into the track layer 4 to integrate them. One magnetic core block half-day 21
A winding groove 3 is formed at +11+ before joining.

The magnetic recording medium sliding surface side of the magnetic core block thus obtained is cylindrically ground to form a curved surface having a predetermined curvature.

Then, during this grinding, the 11" distance from the top of the winding groove to the sliding surface of the magnetic recording medium (that is, the cap depth Gl) is determined. Next, as shown in FIG. Broken lines A-4' and ll-11' from part 1.

get.

The angle of the broken line when cutting corresponds to the angle at which the magnetic core block mass is recorded.

That is, the inclination θ゛1 of the broken line indicated by A-A', +3-B' is the oblique angle -1 of the gap shown in Fig. 3(A).
θ0.1, and the inclination angle of the dashed line C-C/, L)-T)' and ψ:-1-θ' shown in Figure 3 (B) match. There is.

Magnetism obtained in this way: "A single unit 5 and 6 are marked, 4
As shown in the figure, the magnetic circuit is completed by positioning and fixing it on the base board 7, and tightening it in the winding groove 3 the required number of times.

In ancient times, if the structure as described in 1- below is adopted, the angle θ must be controlled in the state of extremely small parts, and it is difficult to maintain the accuracy with respect to the slope jflθ. To the middle body, corner of 6)] (, 11′1 is a dotted circle, and there is a tax 3 edge on the 7TX sum part, so tyl I
+, 1 [(When handling x + y, this sharp 197 part is missing (
J occurs, which is a good cause for the production yield of DingJA to be low by 1°.

(1) The present invention has been made to eliminate the above-mentioned drawbacks of the conventional technology.The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional technology. (=1 set the jll'l slope on the board side i
-+ makes it easy to manage the inclination angle of the anomalous arrangement method, and the magnetic / is intended to provide.

The present invention will now be described in detail with reference to embodiments shown in the drawings.

FIGS. 5 to 8 illustrate and explain embodiments of the present invention. In each figure, the same or corresponding parts as in FIGS. 1 to 1 are designated by the same reference numerals. The explanation will be omitted.

The magnetic/rad according to the present invention is as shown in Fig. 5 (4) As in the conventional method, the manufacturing process is similar until the magnetic core block halves 1 and 2 on the tt right are butted together to obtain the magnetic core block. get.

A single core is cut from the block obtained in this way, and at this time, the broken line E-TI in FIG.
' , F'-11"', it is cut from a cutting plane that makes an angle of 90° to the gap line. The single magnetic core 9 thus obtained is shown in FIG. It consists of a single magnetic core with right-angled corners, and the gap is vertical.

Zunawaji, like the conventional structure (the inclination angle is +00°-
Two types of parts such as θ0 do not occur.

On the other hand, the mounting surface of the protruding piece 7a protruding from the edge of the substrate 7 for taking the magnetic core is 100 mm. Alternatively, it has an inclination of -θ0. Although only the +00 slope is shown in FIG. 7, a mounting board 7 having a projection 7a having a -θ0 slope is prepared separately.

The magnetic core unit 9, around which the mated wire is wound, is fixed to the protruding piece 7a of the mounting board 7 obtained in this manner by means of soldering or the like. What is indicated by the reference numeral 10 is a printed circuit board.

This embodiment has the following structure, so there is no sharp "L" edge at the corner of the core, and no chipping of the edge occurs during handling. Since there is no inclination angle in the white part of the magnetic core (key) 7, which is a part, it is easy to manufacture the part and the processing accuracy can be improved.

In addition, since the angle of inclination is to be applied to a large component such as a protruding piece of the board, it is compared to the conventional method where an oblique angle is provided on the magnetic unit itself. Misalignment can improve the machining accuracy.

As is clear from the explanation of the effects, according to the present invention, the magnetic head used in the azimuth recording method does not have an inclined key A/tub, but an inclined angle is provided on the core mounting surface of the mounting board. Since the magnetic core is manufactured using a similar structure, it is easy to manufacture the magnetic core, it is easy to manage, and there is no occurrence of chipping (1) at the edge portion, and the machining accuracy can be significantly improved.

[Brief explanation of the drawing]

24, ;; Figures 1 to 4 explain the conventional manufacturing method. Figure 43 (A). (+() (i) Front view of single magnetic core, 4th
Figure 61 is a perspective view of the magnetic HI7 fixed to the +4V board; Figure 6 is a front view of the main unit, Figure 7 is a perspective view of the mounting board, and Figure 8 is the mounting with the magnetic core attached.
= A front view of the J board. 1.2...Magnetic: I a block half-off...Winding groove 4...Gap groove 7...
Take (1 board 9...magnetic core single unit (0...
Print 1 to board (7) Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] In a magnetic head that uses an azimuth recording method in which the magnetic gap is arranged at an angle to prevent interference from adjacent recording tracks, the magnetic core is formed so that its cap is not inclined, and the mounting board is A magnetic head characterized by having a predetermined angle of inclination at the mounting part of a single magnetic core.