Water pump pulley

The utility model relates to a water pump pulley belongs to the automobile parts field. Water pump pulley includes the belt pulley, with belt pulley connection's wheel cap, mounting hole that the equipartition was covered at the wheel, set up the tooth's socket on the belt pulley, belt pulley base member that the belt pulley includes the belt pulley body, extend to a lateral buckling from the belt pulley body, the belt pulley end body that extends to a lateral buckling from the belt pulley base member, fillet radius between belt pulley body and the belt pulley base member is 5mm, and the fillet radius between the belt pulley base member and the belt pulley end body is 4mm, the mounting hole is provided with eight, and every mounting hole diameter is 7mm, the tooth's socket include from belt pulley end end of body to one side extend first protruding, protruding to buckle the second that extends to the opposite side protruding from first, first protruding contained angle between swelling with the second is 36, first protruding fillet radius between swelling with the second is 2mm. The utility model has the advantages of the quality is light, cheap, and intensity is high, the quality that has not only ensured the product has still been guaranteed the intensity of product not only to reduce whole car weight volume, realizes one of vehicle lightweight way, moreover can reduce cost, and whole car and competition of the same trade improve.