| 摘要 |
<p>PURPOSE:To switch take-up operation between reel turntables, by bringing a reversing driving wheel into press contact with an intermediate wheel, supported on a lever energized by a spring between the reel turntables, selectively. CONSTITUTION:In a normal rotation recording (reproduction) state shown in a figure, an intermediate wheel 5 is pressed by the force of a spring 10 between a pulley 1 and a reel turntable 3 and a tape runs in a normal rotation direction to be taken up around the reel turntable 3. When a reverse recording (reproduction) operation is performed in this state, a gear 21 and the gear part 26 of a body 29 of revolution start engaging with each other by the pin 30 of a normal and reverse switching plate 15, and the body 29 of revolution rotates clockwise by a half turn to move a lever 8 as shown by an arrow through a cam 27, the switching plate 15, a circular part 17, a connecting rod 19, a coupling lever 13, and a shaft 7. The spring 10 rotates as shown by an arrow B and presses the lever 8 as shown by an arrow A to hold the press state of the intermediate wheel 5, so that the tape runs in the reverse direction. When stopping operation is performed in a normal rotation direction, a coupling member 42 returns upward in the figure and a head base plate 31 returns to a stop position.</p> |
