MOTOR WITH REDUCTION GEAR MECHANISM

摘要

A motor 10 with reduction gear mechanism has a first worm 15 and a second worm 15′ having mutually opposite screw torsion directions; a first counter gear 30 including a first large-diameter gear 31 meshing with the first worm 15 and a first small-diameter gear 35 rotating as one piece with the first large-diameter gear 31; a second counter gear 30′ including a second large-diameter gear 31′ meshing with the second worm 15′ and a second small-diameter gear 35′ rotating as one piece with the second large-diameter gear 31′; and an output gear 40 meshing with both the small-diameter gears 35, 35′; wherein a first device 50 for applying a force to press the first counter gear 30 towards a gear case 21 is arranged between the tip of the first small-diameter gear 35 and a gear case cover 29, and a second device 50′ for applying a force to press the second counter gear 30′ towards the gear case 21 is arranged between the tip of the second small-diameter gear 35′ and the gear case cover 29.