JPH0110735Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite magnetic head that integrates two magnetic heads.

Conventionally, in the case of a composite magnetic head, as a first coupling means, although not shown, magnetic head components such as a magnetic core, coil, etc. are assembled in a hold case that is divided into two parts, and the two hold cases are butted together. After fixing the magnetic tape in place and storing it in a shield case and fixing it with resin or adhesive, attach the separately assembled second magnetic head to the first magnetic head whose sliding contact surface has been polished, and apply adhesive, etc. They may be connected by an appropriate means, or as a second connection means, a substantially U-shaped clamping member 1 may be used to connect the first
magnetic head [ ] and a second magnetic head [ ]
As a third coupling means, a substantially U-shaped clamping member 3 is provided on a part of the hold case 2 made of a flat plate, as shown in the cross-sectional view of the main part in FIG. 3, there is a means for coupling the first and second magnetic heads [ ], [ ].

By the way, the first coupling means requires processing of a tap hole for coupling, and the second magnetic head must be provided with a mounting hole, which not only complicates the mold, but also increases the complexity of the mold. There are drawbacks such as poor workability due to the work of fixing the screws and an increase in the number of parts.
Alternatively, although the clamping member 3 provided on the hold case 2 is superior in terms of workability of coupling with the second magnetic head [ ] and reduction in the number of parts, the hold case 2 made of a flat plate is , the first magnetic head [ ] cannot be fixed unless it is combined with the second magnetic head [ ], so the first magnetic head [ ] is manufactured independently and the second magnetic head manufactured in a separate process When combining with the second magnetic head [], there is not only the disadvantage that the hold case 2 cannot be fixed, but also the hold case 2 made of a flat plate is connected to the inner wall 4b of the shield case 4 of the first magnetic head []. Even in the case of pressing and fixing, there was a drawback that the attachment state of the hold case 2 was influenced by the elastic strength of the clamp member 1 or the clamp member 3 provided on the hold case 2.

The present invention aims to eliminate such conventional drawbacks, and an object of the present invention is to securely fix the hold case of the first magnetic head to the shield case, and to easily connect it to the second magnetic head. The object of the present invention is to provide a composite magnetic head that can be used for various purposes. FIG. 3 is a perspective view showing the structure and assembly process of the composite magnetic head of the present invention, and FIG. 4 is a sectional view of the main parts thereof. Note that the same parts and parts as those shown in FIGS. 1 and 2 are designated by the same numbers and detailed explanations will be omitted.

In the drawing, 5 is a notch provided in an appropriate part of the side wall 4a of the shield case 4 of the first magnetic head, 6 is a hold case of the second magnetic head, and 7 is a cutout provided in the side wall of the hold case 6. This is a hole formed by cutting out a part of 6a. By forming the substantially hole 7, a side wall 6b is formed between the hole 7 and the side wall 6a. Reference numeral 9 denotes a magnetic core fixed to the hold case 2 of the first magnetic head [] using appropriate means, 10 a terminal attached to the coil bobbin 11, 12 a coil wound on the coil bobbin 11, and 13 a coil wound on the coil bobbin 11. It is a gap plate. coil bobbin 1
1 is interposed between opposing cores 9, and a gap plate 13 is inserted on the opposite side of the magnetic core 9 from the coil bobbin 11.

14 is a square-shaped elastic member of the present invention;
The first U-shaped elastic piece 14a and the second U-shaped elastic piece 14b share one side and are connected in opposite directions. 15 is a core holding member that fixes the pair of magnetic cores 9.

Next, to explain how to assemble the composite magnetic head of the present invention, first, the hold case 2 on which the main body of the first magnetic head [] has been assembled is inserted into the hold case 2 along the inner wall 4b of the shield case 4 of the first magnetic head []. 3 in the direction B in FIG. 3, and then press-fit the first U-shaped elastic piece 14a of the elastic member 14 between the two coil bobbins 11 with the open end facing toward the terminal 10. The width _t1 of the first U-shaped elastic piece 14a is set in advance to be larger than the width _t2 of the shield case 4 of the first magnetic head.

At that time, the first U-shaped elastic piece 14a is attached with one surface 2a of the hold case 2 pressed against the inner wall 4b of the shield case 4. After that, the amount of protrusion of the magnetic core 9 from the window (not shown) of the shield case 4 is adjusted and positioned, and then the hold case 2 is fixed to the shield case 4 by filling with epoxy resin, adhesive, etc. , the tape sliding surface is ground to form a first magnetic head.

Next, to explain the coupling between the first magnetic head [] assembled as described above and the second magnetic head [] assembled in advance, the shield case 4 of the first magnetic head [] side wall 4a of
and the hold case 6 of the second magnetic head []
With the side walls 6a of 3. After moving in the direction A in Fig. 3 and clamping the side wall 6b of the hold case 6 with the second U-shaped elastic piece 14b, the upper and lower, front and rear of the first and second magnetic heads [] and [] are moved. After adjusting the position, synthetic resin or adhesive is filled into the hole 7 of the hold case 6 and fixed.

The present invention has the configuration as described above, and according to the present invention, by using the elastic member as described in detail, the flat holding case is securely pressed and fixed to the inner wall of the shield case of the first magnetic head. Not only can the magnetic head be easily coupled to the second magnetic head, but also the shield of the hold case of the first magnetic head can be used, especially when the first and second magnetic heads are made and coupled in separate steps. It is securely held against the case, and workability is further improved.

In addition, in the explanation of the embodiment of the present invention, the second U-shaped elastic piece was explained to clamp the side wall of the hold case of the second magnetic head, but it is not necessarily necessary to clamp the side wall of the hold case of the second magnetic head. It is sufficient that the hold case of the second magnetic head is movably held by the second U-shaped elastic piece.

[Brief explanation of the drawing]

1 and 2 are main part sectional views showing the coupling means of a conventional composite magnetic head, FIGS. 3 and 4 show an embodiment of the present invention, and FIG. 3 is a configuration of the composite magnetic head. FIG. 4 is a perspective view showing the assembly process, and FIG. 4 is a sectional view of the same essential parts. ...First magnetic head, ...Second magnetic head, 1, 3... Clamping member, 2, 6... Hold case, 4... Shield case, 4a, 6a, 6
b...Side wall, 4b...Inner wall, 5...Notch, 7...
...hole, 9...magnetic core, 10...terminal, 11...
Coil bobbin, 12... Coil, 13... Gap plate, 14... Elastic member, 14a... First U-shaped elastic piece, 14b... Second U-shaped elastic piece.

Claims (1)

[Scope of utility model registration request] In a composite magnetic head formed by joining a first magnetic head and a second magnetic head, first and second U-shaped elastic pieces are connected in opposite directions with a common side. The first U-shaped elastic piece includes an elastic member that forms a shape, and when one side of the first U-shaped elastic piece presses the hold case of the first magnetic head against the inner wall of the shield case of the first magnetic head, A composite magnetic head characterized in that the second U-shaped elastic piece is press-fitted into a shield case and movably holds a hold case of the second magnetic head.