| 摘要 |
<p>PURPOSE:To execute the switching of various modes by a simple mechanism by constituting the device so that by an inversion of a fly-wheel, a driving gear and a fixed gear are engaged and a driving arm is turned, and in the course of turning of the driving arm, a cam pushes back a pinch roller shaft and detains it to an engaging step, detaching it from the engaging step and pressing a pinch roller against a capstan shaft. CONSTITUTION:When a motor 2 rotates counterclockwise, a driving arm 7 turns counterclockwise, and a driving gear 8 is engaged to a fixed gear 9 and turns counterclockwise, is detached from the fixed gear 9 and engaged to a rewind reel gear 11. In this case, a cam 18 of the driving arm 7 pushes back a pinch roller shaft 14a to the outside and is engaged to an engaging step 19. Subsequently, when the motor 2 is rotated clockwise, the driving arm 7 turns clockwise, and the cam 18 of the driving arm 7 pushes and detaches the pinch roller shaft 14a from the engaging step 19. Therefore, the pinch roller shaft 14a is returned to a recessed part 17 by a spring 15, and a pinch roller 14 is pressed against a capstan shaft 16. In such a way, a mechanism for engaging and separating a gear becomes unnecessary, and the structure becomes simple and inexpensive.</p> |
