| 摘要 |
A rotational driving apparatus which comprises a motor, a worm pressingly fitted to an output shaft of the motor, and a worm wheel meshing with the worm, to output rotation of the motor from the worm wheel via the worm, the apparatus comprising: a support member placed with forming a gap with respect to a tip end of the worm, the support member comprising a through hole positioned on a same axis as the worm; a pressing member that is inserted into the through hole, and protrudes from a tip end of the through hole to butt against a tip end face of the worm; a plug member fitted into the through hole to close the through hole, in which its fitting degree into the through hole is adjustable; and an urging member interposed between the pressing member and the plug member to urge the pressing member toward the worm.
|
