JPH0453005B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a head device, and more particularly, an external conductor for connecting a recording/reproducing head whose relative position changes and an external circuit is provided by passing through a support member of the head. This invention relates to a head device.

[Prior Art] As this type of head device, a so-called rotating (autorotating) magnetic head device is known, and conventionally it is constructed as shown in FIGS. 1 and 2.

In both figures, the reference numeral 1 designates a magnetic head, which records and reproduces information by slidingly contacting the upper sliding surface of the magnetic core 2 facing a magnetic tape of a magnetic recording medium (not shown). A tape guide 3 is attached to the side surface adjacent to the sliding surface, and connection terminals 4, 4 connected to the ends of a coil winding (not shown) wound around the magnetic core 2 are implanted on the bottom surface. There is.

Further, reference numeral 5 denotes a rotary table which is a supporting member for the magnetic head, and is formed hollow, and the magnetic head 1 is fitted and held in an opening 5a at the top thereof. Further, the rotary table 5 has a cylindrical shaft portion 5b at the bottom.
It is rotatably supported (rotated) in the directions of arrows A and B on a magnetic storage/reproduction device (not shown) via this shaft portion 5b. In addition, a through hole 5c is formed in the shaft portion 5b so as to pass through it in the axial direction, and a plurality of external conductive wires 6 are inserted into the rotary table 5 through this, and one end portion 6a of the through hole 5c is connected to the magnetic head 1. The other end 6b is connected to the terminal 4, and the other end 6b is connected to an external circuit (not shown) fixedly provided to the magnetic recording device.
Fixed.

In such a configuration, during recording and reproduction, the rotary table 5 is rotated 180 degrees alternately in the directions of arrows A and B by driving by a drive means (not shown) according to the running direction of the magnetic tape.
At the same time, the magnetic head 1 and the ends 6a of the external conductive wires 6 connected to the connecting terminals 4, 4 also rotate.

However, during this rotation, the end 6b of the external conductor 6
Since the side is fixed to the external circuit and does not rotate,
The external conducting wire 6 is twisted and force is applied to the end portion 6a and the connecting portion of the connecting terminal 4. As a result, there is a drawback that the connection portion frequently breaks due to frequent use.

[Purpose] The present invention has been made in view of the above circumstances, and is applicable not only to the above-mentioned rotary magnetic head but also to connection between a recording/reproducing head whose relative position changes and an external circuit, as mentioned at the beginning. To provide a head device in which an external conductor is provided by passing through a supporting member of the head, and which can ensure reliable connection between the head and the external conductor with a simple and inexpensive configuration.

[Structure of the Invention] In order to achieve the above object, the present invention provides a head device of the type described above with a lateral hole communicating with a through hole through which an external conductor of the head support member is inserted, and a lateral hole communicating with the through hole through which the external conductive wire is inserted through the lateral hole. By filling the through hole with adhesive, a structure was adopted in which the external conducting wire was fixed at the filled part.

[Example] Hereinafter, details of embodiments of the present invention will be described.

FIG. 3 and subsequent figures illustrate the structure of a rotary magnetic head device according to an embodiment of the present invention, together with its assembly process. In each figure, parts that are the same as or correspond to those of the conventional example shown in FIGS. 1 and 2 are given the same reference numerals, and explanations of the same parts will be omitted.

3A and 3B are a front view and a side view showing the structure of the rotary table 5, which is the magnetic head support member of this embodiment.

As shown in both figures, the rotary table 5 is formed almost the same as the conventional example described above, but a horizontal hole 5d is formed in the shaft portion 5b, and this horizontal hole 5d is formed in the shaft portion 5b.
A through hole 5 for passing an external conductor in the shaft portion 5b from the side surface of the shaft portion 5b.
It is connected to c.

As shown in FIG. 4, an external conductor 6 similar to the conventional one is inserted into the rotary table 5 from an upper opening 5a and passed through a through hole 5c, and the external conductor 6 is connected to the connection terminal 4 in advance. The connected magnetic head 1 similar to the conventional one is fitted into the opening 5a and fixed.

Next, Fig. 5 is an enlarged cross-sectional view of the shaft portion 5b in Fig.
As shown by arrow C in the figure, an adhesive resin 7 shown by mesh lines is injected and filled into the middle part of the through hole 5c through the side hole 5d. As this resin 7 hardens, this portion of the external conductor 6 is fixed to the rotary table 5.

The rotary magnetic head is assembled into a magnetic recording/reproducing device (not shown), and the outer end 6b of the external conductor 6 is connected to a fixed external circuit of the device.

Based on the above structure, the rotary magnetic head rotates during recording and reproduction in the same way as in the conventional example described above.
Unlike the above-mentioned portion of the external conductor 6 from the fixed portion to the rotary table 5 to the magnetic head 1 side, no force is applied to the connection portion between the end 6a of the external conductor 6 and the connection terminal 4.
There will be no disconnection in this part.

It should be noted that the external conductor fixing structure described above can of course be applied to magnetic head devices in which the head is supported in a swingable manner, and can also be applied to head devices of methods other than magnetic recording/reproduction such as those mentioned above. Of course, it can be widely applied.

[Effects] As is clear from the above description, according to the present invention, in a head device in which an external conductor connecting a recording/reproducing head whose relative position changes and an external circuit is provided by passing through a support member of the head, By providing a horizontal hole that communicates with the through hole of the support member through which the external conductor is inserted, and by filling the through hole with adhesive through this horizontal hole, the external conductor is fixed at the filled part. With a simple and inexpensive structure, it is possible to prevent disconnection at the connection between the head and the external conductor, thereby improving the reliability of the head device.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are a perspective view and a vertical side view showing the configuration of a conventional rotary magnetic head, respectively;
Figure 3 and the following will explain the configuration of the rotary magnetic head according to the embodiment of the present invention together with the assembly process, so Figures 3A and B are respectively a front view and a side view of the rotary table, and Figure 4 shows the insertion of the external conductor. FIG. 5 is an enlarged sectional view of the rotary table shaft in FIG. 4 filled with resin. 1...Magnetic head, 5...Rotary table, 5c...Through hole, 5d...Horizontal hole, 6...External conductor, 7...Resin

Claims (1)

[Claims] 1. In a head device in which an external conductor connecting a recording/reproducing head whose relative position changes and an external circuit is inserted through a support member of the head, a side hole communicating with a through hole through which the external conductor of the support member is inserted is provided. A head device characterized in that an external conducting wire is fixed in the filled portion by filling the through hole with an adhesive through the side hole.