JPH0810512B2 - Recording and playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus, and in particular, an auxiliary substrate on which a reel stand is mounted is opposed to a main substrate on which a rotary cylinder is mounted. The present invention relates to a recording / reproducing apparatus having a structure that is moved in a static manner. In a conventional recording / reproducing apparatus of this type, the slack removal of the tape at the time of unloading is driven by a plunger or a cam as described in Japanese Patent Publication No. 57-38980. The brake lever is pressed against the winding-side reel to make the winding-side reel stand still, and the supply-side reel is driven by a motor or the like to wind the tape and prevent the tape from sagging. . [0003] In the above-mentioned prior art, the
The auxiliary board that holds the cassette and holds the cassette is
Because it does not move, the reel is caused by vibration when the auxiliary board moves.
And the fluctuation of the reel stand has not been taken into consideration.
It was. Further, in the configuration using a conventional brake lever, in order to transmit additional or plunger and the driving force of the cam plunger for driving the brake to the brake lever, it is necessary to provide such new slider or lever,
There has been a problem that the number of parts increases, which hinders downsizing, weight reduction and price reduction of the device. It is an object of the present invention to relieve the above-mentioned drawbacks of the prior art by shifting or slackening the tape when the cassette is moved.
An object of the present invention is to provide a recording / reproducing apparatus capable of preventing the above. Change
The miniaturized with a reel base braking mechanism having a simple structure which is driven by the movement of the sub chassis such auxiliary substrate, it is also to provide a recording and reproducing apparatus which attained low price. In order to achieve the above object, in the recording / reproducing apparatus of the present invention, the auxiliary substrate is moved.
Equipped with a brake mechanism that brakes the rotation of the reel base during
It will be configured. Further, it is configured to include a brake member that is brought into contact with at least the reel base by displacement caused by movement of the auxiliary substrate. The auxiliary board displaces and drives the brake member by its moving operation to bring it into contact with the reel base. Embodiments of the present invention applied to a magnetic recording / reproducing apparatus will be described below with reference to the drawings. FIG. 1 is a perspective view of an embodiment of the recording / reproducing apparatus of the present invention, FIG. 2 is a plan view of a magnetic recording / reproducing apparatus equipped with this brake device before storing the cassette, and FIG. 3 is a plan view of the recording / reproducing apparatus after storing the cassette. 4 and 5 are plan views showing a state in which the cassette is removed and the brake device is activated, and FIG. 5 is a plan view in which the brake device is inactivated. First, an outline of the magnetic recording / reproducing apparatus will be described. In the figure, 1 is a main chassis, 2 is a rotary cylinder on which a magnetic head is mounted, and 3 is a cassette. In the cassette 3, a supply reel 5 and a take-up reel 6 on which the magnetic tape 4 is wound are arranged in parallel with the exposed tape. Reference numeral 7 is an entrance-side guide base on which an entrance-side inclined guide and guide rollers are mounted, and 8 is an exit-side guide base on which an exit-side inclined guide and guide rollers are similarly mounted.
Reference numeral 9 is a drawing roller. The guide bases 7 and 8 and the roller 9 form a tape guide means. At the time of loading operation, the guide bases 7 and 8 and the pull-out roller 9 pull out the magnetic tape 4 from the cassette 3 and move it along the groove provided in the guide guide plate 10. The magnetic tape 4 is positioned near the rotary cylinder 2 in a predetermined positional relationship, and the magnetic tape 4 is wound around the rotary cylinder 2 in a spiral shape at a predetermined angle. Numeral 11 is a tension pin for detecting the tension of the running magnetic tape 4, and the tension detected by the tension pin 11 gives a predetermined tape tension to the running magnetic tape 4. The tape feeding load on the supply-side reel 5 is controlled. Reference numeral 12 is an impedance roller for absorbing longitudinal vibration of the magnetic tape 4, 13 and 14 are capstans and pinch rollers for driving the magnetic tape 4 under pressure, and 15 is a capstan for driving the capstan 13. A stun motor 16 is a loading motor that drives the inlet and outlet guide bases 7 and 8 and the pull-out roller 9. Reference numeral 17 denotes a sub-chassis on which the cassette 3 is mounted and which is movable with respect to the main chassis 1 in the direction of the rotary cylinder 2. In the magnetic recording / reproducing apparatus having such a structure, when the cassette 3 is mounted in the apparatus, the guide bases 7 and 8, the pull-out roller 9 and the pinch roller 14 are provided in the opening of the cassette 3. In the above, it is necessary to mount the cassette 3 on the sub-chassis 17 so as to be inserted between the magnetic tapes 4 stretched on the front part thereof. The vertical length of the entire apparatus at this point is L as shown in FIG. Next, the sub-chassis 17 on which the cassette 3 is mounted is moved in the direction of the rotary cylinder 2 and brought into the state shown in FIG. At this time, the guides such as the guide bases 7 and 8 on the inlet side and the outlet side and the pull-out roller 9 are in the half loading state. Then, the guides inserted into the opening of the cassette 3 are pulled out of the cassette, and the rotary cylinder 2 can be stored in the opening of the cassette 3. As a result, the vertical length of the entire apparatus is
It is shortened to 1 in FIG. 3 as opposed to L in FIG. Next, the structure of the brake member according to the present invention applied to a magnetic recording / reproducing apparatus will be described.
In FIG. 1, 18 is a magnetic tape 4 in the cassette 3.
A reel stand for driving a reel (not shown) on which is wound,
Reference numeral 19 is a brake lever (brake member) for braking the reel base, 20 is a support member for rotatably supporting the brake lever 19 on the sub chassis 17, and 21 is a braking force of the reel base 18 on the brake lever 19. An urging spring 22 for providing the urging spring, 22 is a spring hooking member for supporting the other end of the urging spring on the sub chassis 17, and 23 is erected on the main chassis 1 so that the sub chassis 17 is attached to the rotary cylinder 2. It is a brake releasing member that comes into contact with the brake lever 19 and releases the brake of the reel base 18 when the reel base 18 moves in the direction. The operation of the brake member will be described below with reference to FIGS. At the time of loading, as shown in FIG. 4, from the state in which the pre-cassette mounted sub-chassis 17 is projected from the chassis 1, the inlet side and outlet side guide bases 7 and 8 are moved to move the cassette 3 from the cassette 3. Pull out the magnetic tape 4. At this point, the brake releasing member 2
Since 3 is not in contact with the brake lever 19, the brake lever 19 is in contact with the reel base 18 by the biasing spring 21 to brake the take-up reel 6. Therefore, the magnetic tape 4 is pulled out from the supply reel 5 and wound around the rotary cylinder 2. Next, as shown in FIG. 5, since the sub-chassis 17 moves in the direction of arrow a in the loading completion state, the brake release member 23 that is planted in the main chassis 1 moves to the brake. The brake lever 19 contacts the lever 19 and rotates in the direction of arrow b to release the braking of the rule base 18. Thereafter, when the tape is stopped in the normal recording / reproducing mode, the supply side and take-up side reels 5 and 6 are braked by another main brake (not shown). When unloading, the reel base 18 is braked by performing the reverse operation described above.
The magnetic tape 4 is wound around the supply reel 5. In the illustrated example, the brake lever 19 is rotatably supported by the sub-chassis 17 by the supporting member 20, and the brake lever 1 is moved by the movement of the sub-chassis.
Brake release member 23 for separating 9 from reel stand 18,
Although provided on the main chassis 1, on the contrary, the brake lever 19 may be provided on the main chassis 1 and the brake release member 23 may be provided on the sub-chassis 17. According to the present invention, the tape wound tape
The reel in the set is on the reel stand provided on the auxiliary board.
Even if the cassette moves in the locked state, the auxiliary board moves
It is possible to prevent the reel stand from wobbling due to vibration of the
Precise tape running that can prevent displacement and slack of the loop
Can be. Moreover, since the brake mechanism of the reel base can be realized by a simple structure of a method of driving by moving the auxiliary substrate such as the sub-chassis, a driving cam, a plunger, etc. can be eliminated. Therefore, it is possible to easily make the recording / reproducing device much smaller and less expensive.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a rule stand brake device used in a recording / reproducing apparatus of the present invention. FIG. 2 is a plan view showing an embodiment of the recording / reproducing apparatus of the present invention before being stored in a cassette. FIG. 3 is a plan view showing an embodiment of the recording / reproducing apparatus of the present invention after being stored in a cassette. [FIG. 4] The cassette is removed and the brake device is operated.
It is a top view of a state. FIG. 5 is a plan view showing a state in which the brake device is inoperative.
It [Explanation of reference numerals] 1 ... Chassis, 2 ... Rotating cylinder, 3 ... Cassette, 4 ... Tape, 7, 8, 9 ... Tape guide means (roller), 17 ... Sub chassis, 18 ... Reel stand, 19 ... Brake lever, 23 ... A member for releasing the brake.

   ─────────────────────────────────────────────────── ─── Continued front page    (56) References JP-A-59-171070 (JP, A)               JP-A-59-107447 (JP, A)               Actual Development Sho 55-61853 (JP, U)

Claims (1)

[Claims] 1. A main substrate rotating cylinder is attached, the tape Lee <br/> Le table for driving a reel in the cassette wound is placed, together with the cassette, before SL main board
In a recording / reproducing apparatus having an auxiliary substrate that moves so as to overlap , rotation of the reel base while the auxiliary substrate is moving.
A recording / reproducing apparatus having a brake mechanism for braking the . 2. The brake mechanism is the cylinder of the auxiliary board.
Immediately before the movement in the direction approaching
The brake of claim 1 is released.
Recording / playback device. 3. In the brake mechanism, the auxiliary substrate is the cylinder.
Immediately after starting to move away from the
The braking according to claim 1 is started.
Recording / playback device.