| 摘要 |
<p>PURPOSE:To obtain the optimum torque required at the time of traveling a cassette tape at a fixed speed and a high speed respectively by providing a rotary body for generating high torque and a rotary body for generating low torque independently and constituting a transmission of rotating force of the rotary bodies respectively via a friction transmission means. CONSTITUTION:Rotating force transmitted from a motor 7 to a pulley 11 is restricted to suitable torque for high speed traveling of the tape by a friction block 60, and this torque is transmitted from a friction plate 31 through a spring receiver 30 and moreover a driving shaft 10 to an FF gear 35. Then, by drawing 1st torque from the FF gear 35, the prescribed high torque can be obtained. Then, the rotating force transmitted to the FF gear 35 is restricted to suitable torque for fixed speed traveling of the tape by the block 60, and this torque is transmitted via a friction member 39 to a play gear 37. Consequently, by drawing the rotating force from the play gear 37, the prescribed low torque is obtained. By this method, the required torque control is facilitated.</p> |
