MOTOR WITH REDUCTION GEAR MECHANISM

摘要

A motor (10) with reduction gear mechanism has a first worm (15) and a second worm (15') that are twisted in the directions opposite to each other; a first counter gear (30) having a first large-diameter gear (31) meshing with the first worm (15) and also having a first small-diameter gear (35) rotating together with the first large-diameter gear (31), a second counter gear (30') having a second large-diameter gear (31') meshing with the second worm (15') and also having a second small-diameter gear (35') rotating together with the second large-diameter gear (31'), and an output gear (40) meshing with both the small-diameter gears (35, 35'). A first urging device (50) for urging the first counter gear (30) is installed on a gear case (21) so as to be located between a gear case cover (29) and an end of the first small-diameter gear (35), and a second urging device (50') for urging the second counter gear (30') is installed on the gear case (21) so as to be located between the gear case cover (29) and an end of the second small-diameter gear (35').