JPH0210610Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a magnetic recording and reproducing device, and in particular provides a safety device that does not malfunction even if an operation button is accidentally pressed when the cassette case is open, especially in a power assist type device.

Conventionally, magnetic recording and reproducing devices use the so-called power assist method, in which the rotational force of the motor is transmitted to the flywheel, and the inertia thereof rotates gears and cams to perform various operations, or the mechanical soft touch operation button method. PLAY, when the eject button is pressed and the cassette case is open.
When you press a button such as FF or REW, the operation of each mode is executed, and if you accidentally put a tape in the cassette case and close the cassette case,
The half hits the magnetic head, the pinch roller, or the reel stand, or if there is a head protection plate, the half rides on the protection plate, resulting in damage to the cassette case or part of the device.

The present invention eliminates the drawbacks of the conventional type mentioned above.
The following description will be made based on an embodiment shown in the drawings. In Fig. 1, reference numeral 1 denotes a cassette case, and an eject lever 3 is provided on the main body side for locking the locking claw 2 of the cassette case 1, and one side of the eject lever 3 has a locking lever 3 for locking the locking claw 2 of the cassette case 1. The eject lock plate 4 for holding the lever 3 in this position is linked to the eject lock plate 4.
The lower side has a stepped portion 6 that engages with the protruding portion 5 of the main body.
and cassette case 1 for resetting this.
A protruding piece 7 is formed opposite to the bottom surface of the holder, and a spring 8 is connected to energize the protruding piece 7. 9 is an eject button, and 10 is a damper.

On the other hand, an arm 11 as shown in FIG. 3 bearing a bearing inside the main body is linked to one side of the eject lever 3.
The tip of the operating piece 12 extending downward from the arm 11 is linked to the end of a transverse cam plate 13 for stopping all modes, which is a component of the operation button device (not shown).

With the above configuration, when the eject button 9 is pressed and the eject lever 3 is rotated, the locking pawl 2 of the cassette case 1 is released as shown in FIG. It will be released. At this time, the eject lever 3 is given a return force by the spring 16, but the eject lock plate 4 is lifted up as a unit, and its step 6 rides on the protrusion 5, and the eject lever 3 returns to the open position of the cassette case 1. is held in

On the other hand, as the eject lever 3 rotates,
The arm 11 linked thereto is rotated against the biasing force of the spring 14, and the operating piece 12 is rotated as shown in FIG. 4, thereby moving the cam plate 13 linked thereto in the direction of the arrow. In this case, when the cam plate 13 moves, the operation button device remains in the stop mode (STOP) via the stop operation rod 15 that engages with it, and therefore, for example, PLAY, FF,
Even if you press any of the operation buttons such as REW, the other operation rods linked to them are in the same state as the operation rod 15, so the magnetic head returns instantly to the recording and playback state (not shown). ) will never stop.

As explained above, in the present invention, when the cassette case 1 is opened, the eject lever 3 is held in its released position, and the arm 1 linked thereto is held in its released position.
1. Since the operating button device is kept in the stop mode via the actuating piece 12, cam plate 13, and rod 15, even if the operating button is pressed by mistake, it will immediately return to normal operation, preventing accidents caused by tape insertion. can be prevented.

When the cassette case 1 is returned to the closed position, the bottom surface of the cassette case 1 presses the protruding piece 7, and the eject lock plate 4 returns to its original position, and the eject lever 3 also returns to its original position, thereby canceling the stop mode of the operating button device.

[Brief explanation of drawings]

Fig. 1 is a side view of the main parts of a magnetic recording and reproducing device showing an embodiment of the present invention, Fig. 2 is a side view of the cassette case of the above device in an open state, and Fig. 3 is a front view of the main parts of the main body side. , FIG. 4 is a front view of the main part of the main body side of the cassette case in an open state. In the figure, 1 is a cassette case, 2 is a locking claw, and 3 is a cassette case.
1 is an eject lever, 4 is an eject lock plate, 6 is a stepped portion, 7 is a protruding piece, and 10 is a damper.

Claims (1)

[Scope of utility model registration request] An eject button 9 for ejecting a cassette, an eject lever 3 that is pivoted on a base and rotates in response to the eject button 9, an eject lock plate 4 that slides following the eject lever 3, and an eject lock plate 4 at one end of the eject lock plate 4. A protrusion 5 provided on the base that engages with the step 6 and one end of an arm 11 that is rotatably supported at an angle substantially perpendicular to the eject lever 3 and extends laterally from the shaft are connected to the eject lever. 3 and rotates in response to rotation of the eject lever 3, and a transverse cam plate 13 for stopping all modes, one end of the operating piece 12 is brought into contact with the transverse cam plate 13. , according to the rotation, the transverse cam plate 1
3. A magnetic recording and reproducing device characterized in that it is configured to lock.