JPS6355122B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head device having a magnetic tape guiding function in a recording/reproducing apparatus using magnetic tape.

FIG. 1 shows a conventional magnetic head device, where 1 is a magnetic head, 2 is a gap portion of the magnetic head 1, 3 is a magnetic tape that runs in contact with the magnetic head 1, and 4 is connected to the magnetic head 1 via a screw 5. This is a tape guide that is attached to the magnetic tape 3 and restricts the vertical movement of the magnetic tape 3 when it is running. The tape guide 4 is formed in a U-shape to restrict vertical movement of the magnetic tape 3, but the vertical interval of the tape guide 4 is wider than the width of the magnetic tape 3. Therefore, the vertical movement width of the magnetic tape 3 is the sum of the width fluctuation of the magnetic tape 3 itself and the difference between the vertical interval of the tape guide 4 and the width of the magnetic tape 3, and the vertical movement of the magnetic tape 3 is quite large. Become something. Therefore, if this magnetic head device is used in a narrow track multi-channel recording/reproducing device, track deviation occurs and the recording/reproducing characteristics deteriorate.

The present invention has been made to eliminate the above-mentioned conventional drawbacks, and an object of the present invention is to provide a magnetic head device that can stably run a magnetic tape with little vertical movement and has a simple configuration.

An embodiment in which the present invention is applied to a magnetic recording/reproducing apparatus using a compact audio cassette will be described below with reference to the drawings. In Figure 2, 6
7 is a tape lead that is attached to the magnetic head 1 and comes into contact with one end of the magnetic tape 3 in the width direction; 7 is an elastic support that is rotatably supported on the magnetic head 1 via a pin 8; has a rod-shaped elastic body 7a at the other end in the width direction of the magnetic tape 3, which faces the tape lead 6 and contacts the tape lead 6 so as to be able to move toward and away from the magnetic tape 3. Elastic body 7a
is made of a spring material such as piano wire. A return spring 9 is attached to the magnetic head 1 via a pin 10 and biases the elastic body support 7 in a direction in which the elastic body 7a separates from the magnetic tape 3.

The operation of the magnetic head device having the above structure will be explained using FIGS. 3 and 4. In this case, the magnetic tape 3 is housed in a cassette case 11. First, the third
In the state in which the cassette is not inserted as shown in the figure, the elastic body support 7 is pressed upward by the return spring 9, and the tape lead 6 and the elastic body 7a
The distance between the magnetic tapes 3 and 3 is wider than the width of the magnetic tape 3. Therefore, when inserting the cassette, the elastic body 7a
Therefore, the magnetic tape 3 can be brought into contact with the magnetic head 1 without damaging the magnetic tape 3. When the cassette is inserted as shown in FIG. 4, the magnetic tape 3 is first inserted between the tape lead 6 and the elastic body 7a and comes into contact with the magnetic head 1, and then the elastic body support 7 Cassette case 11
The elastic body 7a rotates around the pin 8, and the tip of the elastic body 7a descends to come into contact with the upper end of the magnetic tape 3 in the width direction. The contact pressure at this time is several grams, and the magnetic tape 3 is not damaged. As a result, the magnetic tape 3 runs with both ends in the score direction in contact with the tape width door 6 and the elastic body 7a, and fluctuations in tape width are absorbed by fluctuations in the elastic body 7a. Therefore, vertical movement of the magnetic tape 3 hardly occurs, and highly accurate tracking is possible even in the case of narrow track multi-channels. Further, the tape guide mechanism consisting of the tape lead 6, the elastic body support 7 having the elastic body 7a, and the return spring 9 has a simple structure and can be easily attached to the magnetic head 1, resulting in an inexpensive magnetic head device. Note that 12 is a pad of the cassette.

In the above embodiment, the tape lead 6 is provided on the lower end side of the magnetic tape 3, and the elastic body 7a is provided on the upper end side, but this arrangement may be reversed. Also, the elastic body 7
Although a is assumed to be rod-shaped, it may also be flat.

As described above, in the present invention, a magnetic head is provided with an elastic body support having an elastic body that comes into contact with one end of the magnetic tape in the width direction so as to be able to freely come and go, and a tape lead that comes into contact with the other end of the magnetic tape in the width direction. When the magnetic tape is brought into contact with the magnetic head, the elastic body and the tape lead are brought into contact with both ends of the magnetic tape in the width direction, so that the magnetic tape does not move up and down when running, and there is no track deviation. Accurate recording and playback can be performed. Further, the guide mechanism for guiding the magnetic tape in this manner has a simple structure and is easy to attach to the magnetic head, resulting in an inexpensive magnetic head device.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional magnetic head device, Figure 2 is a perspective view of a conventional magnetic head device;
FIG. 3 is a perspective view of the magnetic head device according to the present invention, and FIGS. 3 and 4 are side views of the magnetic head device according to the present invention in a cassette-uninserted state and a cassette-inserted state, respectively. 1...Magnetic head, 3...Magnetic tape, 6...
Tape lead, 7... Elastic body support, 7a... Elastic body, 9... Return spring. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A magnetic head on which a magnetic tape runs in contact, a tape lead attached to the magnetic head and in contact with one end of the magnetic tape in the width direction, and a tape lead that faces the other end of the magnetic tape in the width direction and contacts the tape lead so as to be able to move toward and away from it. an elastic body support body having an elastic body that moves the elastic body; and a return spring that biases the elastic body support body in a direction in which the elastic body separates from the magnetic tape; 1. A magnetic head device characterized in that an elastic body is brought into contact with a magnetic tape by pressing a support.