JPS634264Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an azimuth and height adjustment mechanism for a composite magnetic head consisting of a plurality of magnetic heads.

Conventionally, a composite magnetic head has been made by, for example, bonding and fixing two magnetic heads to each other to form an integrated composite magnetic head.Since the azimuth and height of each magnetic head cannot be adjusted, the composite magnetic head is When manufacturing heads, precise adjustment work is required during assembly, which is a factor that impedes production efficiency, and if a defect occurs in one of the two magnetic heads, the entire composite magnetic head will be defective and the finished product will be affected. Since the finished product is a single piece, it cannot be recycled, which is uneconomical and a waste of resources, and is one of the factors that ultimately reduces the production efficiency of the finished composite magnetic head product.

In some cases, as a composite magnetic head, 2
Some magnetic heads are separated and mounted on a board, but in this case, it is difficult to adjust the azimuth and height of each magnetic head that makes up the composite magnetic head, and the tape recorder There was a drawback that adjustment work was time consuming when assembling to other devices.

Therefore, the present application was devised for the purpose of making it possible to adjust the azimuth and height of two magnetic heads separately, completely and simply, in order to solve the above-mentioned drawbacks in composite magnetic heads. It is.

In the present invention, in order to separately adjust the azimuth and height of the two magnetic heads, the configuration and adjustment method described below are used.

The figure shows a preferred embodiment of the present invention. In Figure 1, the magnetic head 1 is independent, and one side is widened by providing a step 3' on the inner surface that accommodates the two magnetic heads 1 and 2. The magnetic head 1 is inserted into the space 3a of the case body 3 having two spaces 3a and 3b, and the screw hole 1'a provided in the exterior 1' of the magnetic head 1 and the fine adjustment fixing screw 7 are connected to the case body 3. body 3
Fixed via. Here, the hole 3c of the case body 3 through which the fine adjustment fixing screw 7 is inserted is the screw 7, and has a diameter slightly larger than the outer diameter of the screw 7 so that the position of the magnetic head 1 in the space 3a can be finely adjusted. It is provided.

Further, the magnetic head 2 is fixed on a plate spring 4 by welding or the like, and is supported in a floating state via the plate spring 4 in a space 3b which is widened by providing a stepped portion 3' of the case body 3. The spring 4 is provided with a bent step portion 4c so that the end portions 4a and 4b corresponding to the grooves 3'd and 3e having openings facing each other with a step in the space 3b are fitted, and the groove 3d is The end portion 4a of the leaf spring 4 is designed to move somewhat within the groove.

From this, the magnetic head 2 is supported on the leaf spring 4 with an inclination that creates a portion close to one magnetic head 1 and a portion away from it. At this time, the magnetic head 2 may be tilted in the opposite direction to that in the above embodiment, but in this case, the distance between the magnetic heads 1 and 2 is kept constant to prevent magnetic flux from flowing into each other. Therefore, when the inclination is corrected, the magnetic heads 1 and 2 must be tilted so that they maintain a constant distance, which requires an inclined space on the side of the case body 3, and as the case body 3 becomes larger, it is necessary to correct the inclination. In this case, an unnecessary space may be created between the magnetic head 2 and the case body 3, and
The direction of inclination is not very suitable in terms of manufacturing advantages.

Next, at the part of the case body 3 where the magnetic head 2 is located, first and second screw-like protrusions 5 and 6 are installed in the space of the case body 3 on opposing plane parts perpendicular to the vertical center line of the gap of the magnetic head. The first threaded protrusion 5 is provided so as to be threadedly inserted into the portion 3b.
It is located so as to be in contact with the leaf spring 4 on the gap vertical center line of the magnetic head 2, and is located in the space 3 of the magnetic head 2.
The axial movement along the longitudinal center line of the gap in b is adjusted via the leaf spring 4. This serves to adjust the height of the magnetic head 2 within the space 3b. In addition, the second screw-like projection 6 is provided opposite to the first screw-like projection 5 at a position away from the vertical center line of the gap portion of the magnetic head 2 so as to be threadedly inserted into the space 3b. The grooves 3d and 3e have the stepped grooves 3d and 3e to remove the inclination of the magnetic head 2 supported at an inclination, that is, adjust the azimuth in the space 3b of the magnetic head 2. It is something.

Further, the case body 3 is fixed onto a mounting plate 8, and the mounting plate 8 is screwed and supported at both ends by screw shafts 9a and 9b on a base 11, and the mounting plate 8 is supported by the screw shaft 9a.
One end of the base 1 is connected to the base 1 via the coil spring 10.
1, the position of which is adjustable.

Therefore, the magnetic head 1 is mounted on the screw shaft 9b by the helical rotation of the screw shaft 9a supported via the base 11 of the mounting plate 8 to which the case body 3 is attached and the coil spring 10.
When moving the magnetic head 1 using the magnetic head 1 as a fulcrum, the screw 7 provided in the case body 3
The hole 3 is formed larger than the outer diameter of the hole 3 and has an adjustment allowance.
The azimuth and height can be adjusted appropriately by fixing the mounting position while being finely adjustable by the screw 7 and the screw 7. After the adjustment of the magnetic head 1, the magnetic head 2 is then adjusted to the height of the magnetic head 1 by means of a threaded protrusion 5 which abuts against the magnetic head 2 via the leaf spring 4. At this time, the leaf spring 4 has its ends 4a and 4b connected to the groove 3d of the case body 3, respectively.
3e and the abutting top of the first screw-like projection 5 on the vertical center line of the gap of the magnetic head 2, and the first screw-like projection 5 on the vertical center line.
When the plate spring 4 is screwed so as to come into contact with the plate spring 4, the plate spring 4 is extended so as to adjust the height position of the magnetic head 2 while being supported by the grooves 3d and 3e. Next, a second threaded protrusion 6 facing the first threaded protrusion 5 and spaced apart from the axial center line of the threaded protrusion 5 has a magnetic field adjusted by the first threaded protrusion 5. The first screw-shaped projection of the leaf spring 4 supported at three points is biased against the leaf spring 4 through the magnetic head 2 by being screwed so as to come into contact with the head 2. By bending the space between the top of the magnetic head 5 and the end 4b of the leaf spring 4 in a direction opposite to the extension of the leaf spring 4, an azimuth adjustment effect for correcting the inclination of the magnetic head 2 is performed. In this adjustment work, since the first threaded protrusion 5 is located on the vertical center line of the gap of the magnetic head 2, the height position of the head core portion of the magnetic head 2 can be set accurately, and the azimuth can also be adjusted accurately. The magnetic head 2 can be completely adjusted by adjusting only two points, the first and second threaded projections 5 and 6.

To explain with reference to FIG. 2, in FIG.
In one embodiment showing a preferred embodiment of the leaf spring 4 inserted into the springs d and 3e, the leaf spring 4 is supported by a first threaded protrusion 5 and then adjusted in azimuth by a second threaded protrusion 6 for azimuth adjustment. The end portion 4 of the leaf spring 4 is arranged so as to be easily flexible between the groove portion 3e and the first screw-like protrusion 5.
a, 4b, elongated holes 4d, 4e are provided on the sides to be fitted into the grooves 3d, 3e, and in the embodiment, the elongated holes 4d, 4e are provided parallel to the grooves 3d, 3e. The desired purpose can be achieved even if the lines are provided in several places so that the lines run perpendicularly to each other. Note that reference numeral 12 in the figure indicates a locking step 12 parallel to the groove 3e provided on the wall surface of the case body 3 on the side where the magnetic head 2 is housed.
a, 12b in which the tape guide 13 is fitted and locked;
2, a protrusion (not shown) is provided to ensure that the tape guide 13 is securely locked and does not wobble. It has a structure in which the guide 13 is press-fitted and firmly fixed.

Therefore, since the present invention has the configuration described above, the azimuth and height of the two magnetic heads of the composite magnetic head can be adjusted separately, completely and easily, thereby improving quality and productivity. If only one of the multiple magnetic heads of the composite magnetic head becomes defective, it has the excellent effect of reducing the defective rate by replacing that magnetic head with a non-defective one and making the entire product non-defective. It is something.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view. FIG. 2 is a perspective view showing a leaf spring according to an embodiment of the present invention. 1, 2...Magnetic head, 3...Case body, 4...
... leaf spring, 5 ... first screw-shaped projection, 6 ... second
Screw-shaped projection, 7...screw.

Claims (1)

[Scope of utility model registration request] A composite magnetic head in which a plurality of magnetic heads are combined includes a case body for housing the plurality of magnetic heads, and a mounting device for fixing one of the plurality of magnetic heads to the case body so that its mounting position can be finely adjusted. a hole and a fixing member, an elastic plate member that supports another magnetic head in an inclined floating state within the case body, and a first member that adjusts the floating magnetic head through the elastic plate member. An azimuth adjusting mechanism for a composite magnetic head, comprising: an adjusting member; and a second adjusting member facing the adjusting member with the floating magnetic head interposed therebetween, and a second adjusting member located at a shifted position.