| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the inside motor components from damaging due to the locking of a motor by the sudden stop and hold of a cartridge at the deck position and cell position, and also to evade the inconvenience such as a detent mechanism having the whirl stop function is disengaged by the impact at the time of stop. SOLUTION: A tray 11 at the side of a transportation mechanism part 10 housing the cartridge 12 is supported with a base plate 2 of a main body of the mechanism so as turnable by a rotary supporting shaft 3 in the range of, e.g. 90 deg. of the phase angle of the deck position and cell position. The motor 21 of rotation mechanism part 20 is equipped on the base plate 2, thereby one end part 23a and another end part 23b of a rotationally actuated semicircular gear 23 are abutted on the tray 11 to turn it to the deck position or cell position. The driving of the motor 21 is made off in the course of turning to the deck position or cell position. From the midst of the turning, the tray 11 is pulled near to the deck position or cell position while buffering it with the elastic force by roller arms 31, 32 of a buffer mechanism 30, a cam 37 and a coil spring 38, then it is held at each stopping position of the deck position or cell position.</p> |
