| 摘要 |
<p>PURPOSE:To convert a winding torque into a set value by providing a friction gear to a driving device for a tape player. CONSTITUTION:A motor output whose rotating speed is kept in a constant state (fast winding speed) is transferred to a driving gear 1, and at the time of fast winding the large diameter 1a of the driving gear 1 is made to lock to a fast winding side link gear 3, from which it is transferred to a small diameter 5a of a reel driving gear 5 so as to wind the tape at a high speed. And at the time of playing back the motor output at fast winding speed is made to lock to a play side link gear 4 from the small diameter 1b of the driving gear 1 by the switching link 2 and transferred to the upper gear 6a of a friction gear 6 from the play side link gear 4. In the friction gear 6 between the upper gear 6a and a lower gear 6b frictional force in a constant value is acted by a spring 7, so the upper gear 6a and the lower gear 6b are made to slide and the rotating speed of the lower gear 6b is delayed to attenuate the motor rotating speed and torque, so that the tape can be winded at a low speed.</p> |
