| 摘要 |
<p>PURPOSE:To execute the high-speed fast forwarding and rewinding of a reel stand and the low-speed forward turn and reverse by selectively engaging the two layers of oscillation gear units equipped with a friction mechanism to the two layers of intermediate gears which always engage the reel stand. CONSTITUTION:At a first height, an oscillation gear unit 30 is decelerated by the large and small gears of the oscillation gear unit 30 and the intermediate large and small gears through a friction means 33. The deceleration is transmitted to any one of reel stands 9 and 13 by the oscillation gear unit 30 to be moved according to the turning direction of a motor 2 and the reel stand is rotated in a low-speed rotation mode. At a second hight, the oscillation gear unit 30 is not decelerated by the first large diameter gear of the oscillation gear unit 30 and the intermediate small gear without interposing the friction means, such a state is transmitted to any one of the reel stands 9 and 13 by the oscillation gear unit 30 which is moved according to the turning direction of the motor 2 and the reel stand is rotated in a high-speed rotation mode.</p> |
