| 摘要 |
PURPOSE:To permit the backlash adjustment with high precision by relatively shifting the positions of a gear and an another gear meshed with the above- described gear. CONSTITUTION:When a flywheel gear 4b and a worm gear 3 are at meshing positions, an installation plate 2 is shifted until the backlash between the both gears is eliminated, and the plate 2 is fixed onto a frame 7 by a screw 2a. Then, the helical gears 4a and 4b are shifted towards the frame 7, and the helical gear 4a is meshed with the worm gear 3, and an intermediate gear 4c and a gear 6 are meshed, and the helical gears 4a and 4b and the intermediate gear 4c set integrally are installed so as not to slip-off from a gear shaft 5 by utilizing an E-ring 8. Since the amount of dislocation of the helical gear 4a is less by the backlash portion than that of the helical gear 4b, the helical gear 4a is properly meshed with the worm gear 3. |
