Washer fluid pump

摘要

A washer fluid pump (2) for a windshield washer system (3) of a motor vehicle has ventilation ducts (25, 25′) which are arranged in a housing (17) parallel to the longitudinal axis. The ventilation ducts (25, 25′) open out behind bulkheads (21, 22) which are likewise arranged parallel to the longitudinal axis. The bulkheads (21, 22) bridge a constriction (20), which is arranged between an electric motor (15) and a pump stage (16), of the housing (17). In this way, the electric motor (15) is reliably protected against spray water. The washer fluid pump (2) can also be produced in a particularly cost-effective manner.

主权项

1. A washer fluid pump for a windshield washer system of a motor vehicle comprising:
an electric motor extending in an axial direction, a pump stage driven by the electric motor, a housing including two sections separated from each other in the axial direction and two bulkheads extending in the axial direction to connect the two sections, the two bulkheads being separated and spaced apart from each other around a periphery of the housing, each bulkhead extending partially around an outer circumference of the housing from a first lateral edge of the respective bulkhead to a second lateral edge of the respective bulkhead, thereby allowing flow between the two bulkheads, wherein each bulkhead covers a single associated ventilation opening of an associated ventilation duct, the ventilation duct extending in an axial direction, wherein the associated ventilation duct opens through its ventilation opening into an associated outlet area defined by the first and second lateral edges of the bulkhead which adjoin the ventilation opening, so that a fluid passing through a respective ventilation opening may pass between the two bulkheads without passing another ventilation opening, each ventilation opening being spaced apart from an interior of the electric motor in the axial direction, the housing formed in a unitary piece, wherein two ventilation ducts are formed within the housing on diametrically opposite sides of the housing extending in the axial direction from the interior of the electric motor to the associated outlet area behind the two bulkheads, respectively, such that each of the two axially-extending ventilation ducts is in fluid communication with a corresponding outlet area and configured to vent to an area outside the housing via said outlet areas.