| 摘要 |
<p>PURPOSE:To decrease the number of parts, and to obtain a small-sized device by arranging an oscillation preventing pulley rotatably and concentrically with the center of a capstan shaft with a flywheel, and adjusting the position of the capstan shaft. CONSTITUTION:An oscillation preventing pulley 7A is arranged rotatably and concentrically with a capstan shaft 1 provided with a flywheel 2, and a bearing 26 for the capstan shaft 1 is provided at the shaft center part of the pulley 7A. The bearing 26 has a screw part 26a, and a screw 27 engaging it is used to adjust the position of the capstan shaft. A belt 6 extended around a motor pulley and a reel pulley which are not shown in the figure is engaged with the external circumference of the oscillation preventing pulley 7A to drive the reel pulley and oscillation preventing pulley 7A, and the capstan shaft 1 is driven by a belt 3 extended around the external circumference of the flywheel 2 and motor pulley. Thus, the number of parts is decreased and the height adjustment of the capstan and the oscillation prevention of the belt are made possible.</p> |
