| 摘要 |
PURPOSE:To eliminate the need for an exclusively used motor for high speed feeding and to prevent having an adverse effect on reproduction by the constitution that an eccentric turning wheel is brought into press contact with a flywheel only at rapid traverse and rewinding and both reels and driven at a fast speed by utilizing the power of capstan. CONSTITUTION:Applying power to an exciting coil 15a, the magnetic flux of it cancels the magnetic flux of a magnet 20a, the interlocking is released and the eccentric turnint wheel 10a is brought into press contact with a flywheel 2a by the operation of a spring 19a; a reel 5a is turned counter clockwise via the turnig wheel 10a and a gear 9a to traverse rapidly the magnetic tape. When the power supply to the exciting coil 15a is interrupted, a reciprocating lever 3a is interlocked by a magnet 20 adsorbed to a yoke 15 when the position of the maximum bias point of the turning wheel 10a opposes to the flywheel 2a. Further, the turning wheel 10a is detached automatically from the flywheel 2a by the turning of the turning wheel 10a for a slight angle. The effect of operation is the same as that at the rapid traverse since the turning wheel 18 is given between the flywheel 2a and the eccentric turning wheel 17 at the rewinding. |
