| 摘要 |
<p>PURPOSE:To stop accurately a tape loading rotor and with no impact by detaining the loading rotor after it is revolved by a motor as prescribed and at the same time short-circuiting the power supply of the driving motor to stop the motor after driving it by pulses. CONSTITUTION:When a tape comes near its loading position by means of a loading rotor 3 which is turned by a motor 5, a detaining roller 12 abuts a slant part 15 of the rotor 3. Thus the rotor 3 is detained, and at the same time the power supply of the motor 5 is short-circuited via a detection switch 8. Then the rotor 3 has inertia turning and the roller 12 is fitted into a notch part 11 of the rotor 3. As a result, the reverse pulse is impressed to the motor 5 via the switch 8. Then the motor 5 is stopped after the inertia of the rotor 3 is absorbed. Thus it is possible to stop the rotor 3 accurately and with no impact.</p> |
