Pump impeller assembly.

摘要

A pump impeller assembly (10) comprises a pump journal (40), an impeller (42) fixed to one end of the pump journal (40), and a pulley (45) fixed to the other end of the pump journal (40). The pump impeller assembly (10) further comprises a pump bearing (47) including an outer race (48) surrounding the pump journal (40) with the pump journal (40) being adapted to rotate with respect to the outer race (48). The pump impeller assembly (10) includes a support plate (55) fixed to the outer race (48) and lying in a radial plane with respect to the pump journal (40). The support plate (55) has a plurality of locking tabs (60) adjoining its peripheral edge. The locking tabs (60) are circumferentially spaced apart from one another with respect to the pump journal (40). The locking tabs (60) are adapted to interlock with locking lugs (29) formed on an inner surface of a pump housing (12) wherein the locking lugs (29) are adjacent to a pulley opening (15) in the pump housing (12) through which the pulley (45) extends and are circumferentially spaced apart from one another with respect to the pulley opening (15). The locking tabs (60) are adapted so that the interlocking of the tabs (60) with the lugs (29) enables secure attachment of the support plate (55) to the pump housing (12). <IMAGE>