JPS5840260B2 - Jikiki Rokusai Seisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an apparatus for recording and reproducing signals by pulling out a tape from a cassette containing a magnetic tape, loading the magnetic tape onto a rotating head drum using a rotating ring, etc. in which a plurality of guide pins are installed. In particular, the present invention relates to a pull-out means that performs a stable tape pull-out operation with a small and simple structure.

Conventionally, in a magnetic recording/reproducing device with a tape loading mechanism as described above, the tape ejecting means has a mechanism for stably ejecting the tape and for allowing a plurality of guide pins on a rotating ring to pass through the ejected tape without contacting it. , in order to form a sufficient tape loop, which is necessary to make sufficient contact with the tape and then load it onto the rotating head drum.
It is necessary to make the tape draw-out stroke very large, and the structure of the entire draw-out mechanism becomes large, and the drive transmission mechanism of the draw-out mechanism also has a complicated structure.

The present invention eliminates the above-mentioned drawbacks, and one embodiment thereof will be described below with reference to the drawings.

In FIG. 1, a rotating head drum 2 is located approximately in the center of a chassis 1, and an inlet limiter post 4a,
4b, an erase head 6, an exit limiter post 8, an audio control head 10, and a capstan 12.

14 is a rotating ring on which guide posts 16a, 16 are mounted.
b, 16c and a pinch roller 17.

The rotating ring 14 is supported by support rollers 20.22.24.

There is a drawer drive morph 26 at one end of the chassis 1, a drawer arm 32 that rotates around a rotation center 30 is located nearby, and above it there is a drawer drive morph 26 that rotates around a rotation center 42 at one end of the drawer arm 32. There is a first pivot lever 36 and a second pivot lever 34 that also pivots around the pivot center.

There is a first guide post 38 at one end of the first rotating lever 36, and there are, for example, two bent parts near the center of the first rotating lever 36, one bent part and the drawer arm 32. A tension spring 48 is interposed between the front surface of the spring pin 52 and the other bent portion of the first
The rotation lever 36 is prevented from rotating when it is rotated clockwise about the rotation center 42.

A spring guide 44 guides a tension spring 48 interposed between the bent portion of the first rotating lever 36 and the spring pin 52.

There is a second guide post 40 at one end of the second rotating lever 34, and there is, for example, a bent part near the center of the second rotating lever 34, and the bent part and the pull-out arm 3
A tension spring 46 is interposed between the spring pin 50 on the back surface of 2 and the spring pin 50 .

64 is a cassette with reels 60.62.

58 is a magnetic tape.

When the first guide post 38 and the second guide post 40 are inside the cassette 64, the first guide post 38
8 and the second guide post 40 are in contact with the guide plate 56, respectively.

Next, the operation will be explained.

In FIG. 2 when the tape withdrawal operation is initiated, the first guide post 38 and the second guide post 40 are inside the magnetic tape 58 in the cassette 64 (not shown), and are in contact with the tension spring 48. The guide plates 56 are brought into contact with the guide plates 56 by the springs 46, respectively.

Next, when the pull-out arm drive system (not shown) rotates counterclockwise about the rotation center 30, the first guide post 38 and the second guide post 40 are moved by the tension springs 48, respectively.
The magnetic tape 58 is pulled out while being brought into contact with the guide plate 56 by the tension spring 46.

As the rotation of the drawer arm 32 progresses, the first guide post 3
8 and the second guide post 40 are separated from the guide plate 56, respectively (FIGS. 3 and 4), and the first guide post 38 is in a state where the bent portion of the first rotating lever 36 and the pull-out arm 32 are in contact with each other. When the magnetic tape 58 is pulled out and the rotation of the pull-out arm 32 progresses further, the bent portion of the second rotation lever 34 comes into contact with the pull-out arm 32 and the magnetic tape 58 is pulled out.

As described above, according to the present invention, two types of rotating levers are provided on the pull-out arm, and the rotating angles of the levers when pulled out are different, so that the rotation stroke of the pull-out arm is reduced. The tape remains small while forming a large tape loop, which simplifies the pull-out arm drive system, and the pull-out mechanism itself is also downsized, making effective use of space within the chassis and ensuring stable tape loading operation. Have the advantage of doing.

[Brief explanation of drawings]

Figure 1 is a plan view showing one embodiment of the present invention, Figures 2 and 3 are
The figure is a plan view of the drawer mechanism section, and FIG. 4 is a perspective view of the bow drawer mechanism section. 2... Rotating head drum, 14... Rotating ring, 32... Drawer arm, 36.34
......First and second rotating levers, 38.40.
...First and second guide posts, 46, 48.
...Tension spring, 58...Magnetic tape, 6
4...Cassette.

Claims (1)

[Claims] 1. A pull-out means for pulling out the magnetic tape from a cassette storing the magnetic tape, and a plurality of guides for winding the magnetic tape pulled out by the pull-out means around a rotating head drum and loading it onto a predetermined tape running path. In an apparatus for recording and reproducing signals, the device has a tape loading means such as an annular rotating ring with pins embedded therein, and the pulling out means has a first guide post at one end for pulling out the magnetic tape from inside the cassette. It has a first pivot lever and a second guide post having a pivot center concentric with the pivot center of the pivot lever and a second guide post for pulling out the magnetic tape from the cassette at one end. a second rotating lever having different angles of movement; a pull-out arm having one end that corresponds to the rotational center of the first rotating lever and the second rotating lever and that is rotatable about the other end as the rotational center; A magnetic recording/reproducing device comprising a drawer drive means for rotationally driving the drawer arm.