JPS5840262B2 - 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. The present invention relates to a pull-out means that performs a stable tape pull-out operation with a simple special car-type structure.

Conventionally, in a magnetic recording/reproducing device with a tape loading mechanism as described above, the tape extracting means has a stable tape extractor, a plurality of guide pins on a rotating ring, which pass through the extracted tape without contacting it, and In order to form a sufficient tape loop, which is necessary to make sufficient contact with the tape and load it into 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 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 is located near the rotating head drum 2.
, 4J erase head 6, exit limiter post 8, audio control head 10, and capstan 12.

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

The rotating ring 14 is supported by support rollers 20.22.24.

At one end of the chassis 1 is a drawer drive motor 26, with a cam plate 28 nearby.

A drawer arm 32 is located near the drawer drive motor 26 and rotates about a rotation center 30, and above the drawer arm 32, the drawer arm 32 rotates about a rotation center 42 at one end of the drawer arm 32.

There is a second pivot lever 34 that pivots around a pivot center 42 like the first pivot lever 36 .

There is a first guide post 38 at one end of the first rotating lever 36, a second guide post 37 at the other end, and a bent portion, for example, near the center of the first rotating lever 36. A tension spring 48 is interposed between the bent portion and the fly pin 52 on the surface of the pull-out arm 32.

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

There is a stop pin 54 at one end of the pull-out arm 32, which prevents the first rotation lever 36 from rotating clockwise about the rotation center 42.

There is a third guide post 40 at one end of the second rotating lever 34 , and there is a bent part, for example, near the center of the second rotating lever 34 . A tension spring 46 is interposed between the spring pin 50 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 third guide post 40 are inside the cassette 64, the first guide post 38
8 and the third 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 started, the first guide post 38 and the third 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 32 is rotated counterclockwise about the rotation center 30 by a pull-out arm drive system (not shown), the first guide post 38 and the third guide post 40 are tensioned by the tension springs 48 and 9, respectively. Guide plate 5 by spring 46
6, the magnetic tape 58 is pulled out.

As the rotation of the pull-out arm 32 progresses, the first guide post 38
and the third guide post 40 are separated from the guide plate 56, the first guide post 38 is in a state where the first pivot lever 36 is in contact with the stop pin 54 on the pull-out arm 32, and the second guide post 40 is in a state where the second With the bent portion of the rotating lever 34 in contact with the pull-out arm 32, the magnetic tape 58 is
Pull out.

As the pull-out arm 32 further rotates in the counterclockwise direction (the third
4), the second guide post 37 at one end of the first rotating lever 36 contacts the cam plate 28, and is guided by the second guide post 37 to move the first rotating lever 36 counterclockwise around the rotation center 42. The first guide post 38 further pulls out the magnetic tape 58 as the first rotation lever 36 rotates.

As described above, according to the present invention, two types of rotating levers are provided on the pull-out arm, and the first rotating lever is provided with a guide pin so as to come into contact with the cam plate. Since it is configured to be guided by and rotated more than the second rotation lever, a large tape loop can be formed while the rotation stroke of the pull-out arm remains small, which simplifies the pull-out arm drive system. Furthermore, the drawer mechanism itself has been downsized, allowing for effective use of space within the chassis and stable tape loading.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing an embodiment of the present invention, FIG.
FIG. 3 is a plan view of the drawer mechanism, and FIG. 4 is a perspective view of the drawer mechanism. 2... Rotating head drum, 14... Rotating ring, 28... Cam plate, 32...
Drawer arm, 36°34...first and second
Rotating lever 38, 37° 40... 1st, 2nd
and third guide post, 46°48... tension spring, 58... magnetic tape, 64...
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 means has a first guide post at one end for pulling out the magnetic tape from inside the cassette. a first pivoting lever having a second guide post at the other end; The second lever has a rotation center concentric with the rotation center of the lever, has a third guide post at one end for pulling out the magnetic tape from the cassette, and has a rotation angle different from the first rotation lever. a rotating lever; a drawer arm having one end thereof having the rotational center of the first rotating lever and the second rotating lever and rotatable with the other end being the rotational center; and rotationally driving the drawer arm. and a drawer driving means that abuts the second guide post of the first rotating lever at a position near the completion of the tape drawing operation, and the first
A magnetic recording/reproducing device comprising: a cam plate that rotates a rotary lever to move the first guide post further in the tape withdrawal direction.