| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a moving body from rattling due to backlash between a rack and a pinion at low cost. SOLUTION: The rack 32 extending in the same direction as a guide rail is provided on the side of an auto-changer main body, and a horizontal moving body is provided with a driving gear 39 to be rotated by driving force from a driving source, and then this driving gear 39 is provided with one pair of reduction gears 40a and 40b to be meshed with the driving gear 39 respectively. The pinion gears 41a and 41b are provided on the same axes of the one pair of reduction gears 40a and 40b respectively, and either one side reduction gear 40a and its pinion gear 41a are fixed up to be integrally rotated. This one side pinion gear 41a is meshed with the rack 32, while a torsion coil spring 344 is disposed between the other side reduction gear 40b and its pinion gear 41b, and under the state of giving rotational energizing force in an optional rotating direction by spring force of this torsion coil spring 344, this pinion gear 41b on the other side is meshed with the rack 32.</p> |
