JPS642252Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a magnetic head device suitable for use in a small magnetic recording/reproducing device, in which a plurality of head cases containing desired magnetic heads are connected in parallel.
The azimuth angle (vertical angle) of the head can be adjusted to an optimum state with a particularly simple configuration.

Conventionally, a magnetic head device has been proposed in which two separately manufactured heads, for example, an erasing head and a recording head, are connected in parallel. This magnetic head device has recently been proposed for use in magnetic recording and reproducing devices, which are becoming increasingly smaller and lighter. In such a magnetic head device, an erasing head and a recording head, each manufactured separately, are mounted on an assembly jig, and the tape is run to adjust the track position of each head.
Detects the tilt, azimuth angle (vertical angle of the head), electrical phase between the heads, etc., and makes fine adjustments to these.
After that, glue the shield case part of each head via the outer frame (outer case), springs, screws, etc.
By fixing them, mechanical loads were applied and they were brought together.

However, the mechanism used for measurement and the mechanism that actually uses such a magnetic head device do not necessarily have the same tape running system design, and there are variations in the accuracy of the cassette tape halves themselves. It was difficult to accurately fine-tune the track position, thrust, and azimuth angle. Furthermore, although fine adjustments can be made with an independent suspension type head with a mechanism for fine adjustment of track position, tilt, and azimuth angle, it is necessary to attach a complicated adjustment mechanism, and it is complicated and requires a large number of parts. This has resulted in a large magnetic head device that is bulky, making it unsuitable for miniaturization and weight reduction, and has the drawback of increasing manufacturing costs.

In view of the above, the present invention aims to provide a magnetic head device which has a particularly simple structure and allows fine adjustment of the head mounting position to the optimum state.

Hereinafter, an embodiment of the magnetic head device of the present invention will be described with reference to the drawings, taking into account the manufacturing process.

In FIG. 1, reference numeral 1 denotes a first head case of a magnetic head device in which, for example, an erase head 1a and a control head 1b are provided. The first screw portion 3 for use is fixed in advance. Here, the head mounting reference plate 2 is fixed so as to serve as a reference for the azimuth angle of the magnetic head in the first head case. This head mounting reference plate 2 is provided with a so-called blank hole 5 through which a screw hole 4 for an azimuth angle adjustment screw 18 (to be described later) and a second screw portion 7 are passed through with sufficient clearance.

Reference numeral 6 designates a second head case of a magnetic head device provided with, for example, a recording head 6a and a control head 6b, and this second head case 6 has a second screw portion 7 for attaching the magnetic head device.
be fixed in advance.

In FIG. 2, reference numeral 8 designates a spacer for merging which is inserted to provide a predetermined gap between the cases 1 and 6 when the separately formed first and second head cases 1 and 6 are combined. Both head cases 1,
6 are combined with a predetermined gap. and,
Both head cases 1,
6 to the magnet plane and finely adjust it to find the exact track position. Furthermore, by adjusting the head cases 1 and 6 while sandwiching them between the left and right side plates 10 and 11 as shown in the figure, the head cases 1 and 6, which have been accurately aligned in track position, can be combined without any disturbance. In this way, the first and second head cases 1 and 6 are combined at a desired relative position, and the side plates 10, 1
1, the previously opened portions 1c and 6c in FIG. 3 are sandwiched between the jig 12 as shown in FIG. 4, and the combined head cases 1 and 6 are peeled off from the magnet 9.

In FIG. 5, 13 indicates a combining plate as a combining means provided at the bottom of the head cases 1 and 6;
For example, the four corners of this combined board are
After temporarily fixing the four parts 4, 15, 16, and 17, remove the joining spacer 8 that was interposed between the head cases 1 and 6 that were torn off as described above, and then The parts between the corners 16 and 17 are seam welded using a laser. Since the combining spacer has been removed here, the second head case has an inclination as shown in FIG.

In FIG. 6, reference numeral 18 indicates an azimuth adjustment screw as a fine adjustment means. 4 and then screw it in until it comes into contact with the shoulder 6d of the second head case 6 as the movable side.

Since this embodiment is constructed as described above, if the tip of the azimuth adjustment screw 18 is advanced while the mounting tape is running, even if the second head case is tilted as shown in FIG. Utilizing this property, the magnetic head in the second head case can be easily and reliably fine-adjusted to the optimum state until the desired azimuth angle is achieved as shown in FIG. Here, in order to attach the magnetic head device to a small-sized magnetic recording/reproducing device, the screw portions 3 and 7 are used, for example, the eighth screw portion.
As shown in the figure, fixing screws 20, 21 and nuts 22, 23 are inserted through the magnetic head device mounting plate 19.
It would be possible to attach it using something like.

Furthermore, in this embodiment, it is possible to obtain a magnetic head device that does not require a mechanism for adjusting the track position and tilting of each head between the first head case 1 and the second head case 6. Since it has a simple structure with a small number of parts, it is suitable for downsizing and weight reduction, and has the advantage that a magnetic head device can be obtained at low cost.

In addition, in this embodiment, the azimuth adjustment screw 1
8 is configured to abut from the upper side as shown in FIG. 6, but it is easy to understand that the azimuth adjustment can be easily and reliably adjusted to the optimum state even if the configuration is as shown in FIG. 9 or 10, as in this embodiment. I can do it.

It goes without saying that the present invention is not limited to the above-described embodiments, and that various other configurations may be adopted without departing from the gist of the present invention.

[Brief explanation of the drawing]

1 to 8 are explanatory diagrams of one embodiment of the magnetic head device of the present invention, and FIGS. 9 and 10 are explanatory diagrams of essential parts of other embodiments of the present invention, respectively. 1 and 6 are first and second head cases, respectively;
Reference numeral 13 indicates a joining means, and reference numeral 18 indicates an azimuth adjustment screw as a fine adjustment means.

Claims (1)

[Claims for Utility Model Registration] Combining means for combining the bottoms of the first and second head cases by welding while providing a predetermined gap between the first and second head cases housing a desired magnetic head; , a head mounting reference plate fixed on the first head case; and a second head mounting reference plate provided on the head mounting reference plate.
1. A magnetic head device comprising: an adjusting means for adjusting the azimuth angle of the magnetic head within the second head case by coming into contact with the second head case.