| 摘要 |
PURPOSE:To remove mechanical noise due to backlash by installing an auxiliary transmission mechanism consisting of rollers, in parallel with a gear transmission mechanism. CONSTITUTION:This arrangement includes a gear transmission mechanism, which is composed of gears 20, 21 meshing with each other, and an auxiliary transmission mechanism which is installed in parallel with said gear transmission mechanism and composed of rollers 22, 23 in mutual rolling contact or in connection through a belt, whereby force is transmitted through both of these, auxiliary transmission mechanism and gear transmission mechanism. This mitigates vibration in the rotating direction of gears 20, 21 and contacting of flanks at the time of inverting, which removes generation of mechanical noise and/or vibrations because of backlash. |
