Geared motor including ribbed gear housing

摘要

A geared motor includes a yoke and a gear housing. The gear housing includes a worm housing segment and a wheel housing segment. A shaft supporting portion is formed for supporting an output shaft at a center of a base wall of the wheel housing segment. Ribs extend radially outwardly from the shaft supporting portion along an outer surface of the base wall of the wheel housing segment. A lateral thickness of each rib is equal to or smaller than an axial thickness of the base wall of the wheel housing segment.