| 摘要 |
<p>PURPOSE: To rotate a tape recorder at low velocity with small operation sounds and small consumption of power and improve rotation irregularities by providing two one-way clutches immediately after a fly wheel. CONSTITUTION: A first one-way clutch 12a is locked only at the time of a first rotation direction when a first and a second capstans 1a, 1b send a magnetic tape, and transmits the rotation to a gear mechanism 5. A second one-way clutch 12b transmits the rotation to a mode-switching mechanism 8 only at the time of a second rotation direction opposite to the first rotation direction. The second one-way clutch 12b is in the same shape as the first one-way clutch 12a, but idles without being locked at the time of the first rotation direction, not transmitting the rotation to the mechanism 8. At the time of the second rotation direction, the clutch 12b idly runs without transmitting the rotation to the mechanism 5. When the rotation is transmitted from a motor 3 to fly wheels 2a, 2b via a belt 4, the wheels are coupled, with the wheel 2b closer to the motor 3 first, with the clutch 12a and gear mechanism 5, and therefore the rotation irregularities is improved.</p> |
