PROCEDIMIENTO DE MONTAJE DE UN MOTORREDUCTO UTILIZABLE, POR EJEMPLO, PARA ACCIONAR LO LIMPIAPARABRISAS DE VEHICULOS AUTOMOVILES, Y MOTORREDUCTOR CORRESPONDIENTE.

摘要

A motor-reduction gearbox combination has the driven shaft output gear on the floor of the casing and below the driving shaft which is perpendicular to the driven shaft. The drive shaft has two multi-start corner screw portions of opposite hand and preferably of equal arithmetic pitch, to be engaged by respective pinions. Each pinion forms part of a respective double gear unit by being fixed to, or more preferably formed integrally with, a gearwheel meshing with the driven shaft output gear. For each double gear unit, the ratio of the number of teeth on the gearwheel to the number of teeth on the pinion is equal to the number of thread starts of the associated worm screw portion of the driving shaft, and in the preferred case the double gear units both have the same such ratio.