| 摘要 |
<p>PURPOSE:To enable the smooth mechanism action to be continually performed, by providing a lever which rotates by its own turning force a driven side gear in a predetermined degree to be engaged with a driving side gear. CONSTITUTION:In the driving part of a VTR, the second lever 37 is equipped with a pin 41, engaged with a long hole 39 in the first lever 36, while turnably mounted to an axis 43 fixedly provided to a chassis, and two protruding parts 60, 61 of almost V shape are provided in a side part of the second lever 37. A motor is driven, and if a gear 6 is rotated by almost one turn from a condition in the drawing, a boss 35 is held to a condition that it is adapted to the protruding part 60 of the second lever 37, and a driven side gear 25 is not turned. And the second lever 37, whose protruding part 60 separates from the boss 35 as a pin 38 advances engaging with a part 22, adapts the protruding part 61 to the boss 35 by the own turning force of the lever 37, thus turning the driven side gear 25 by a predetermined degree.</p> |
