Patent ID: 11892070

Abstract:
A belt pulley of a washing machine drum made of a plastic material, comprising a hub, a circumference of the belt pulley to receive a belt, a substantially circular dividing rib dividing the belt pulley to the inner and outer concentric section with a plurality of reinforcing ribs, wherein the dividing rib is arranged on a line of a polygon having the centre in the belt pulley axis and exhibiting corners, into which, from a side facing the hub, a portion of the outermost ribs lead, said ribs being part of a plurality of reinforcing ribs of the inner section, wherein at least a portion of these ribs leading into the corners of the dividing rib run, extend along a line of polygons, preferably hexagons, which are radially arranged in the inner section and in contact with each other along one of their sides, wherein, from at least one said corner of the dividing rib on the side facing the outer circumference, at least one arc-shaped rib of the outer section originates, and its free end contacts the outer circumference of the belt pulley.