Washer fluid pump for a window cleaning system of a motor vehicle
AssigneeContinental Automotive GmbH
InventorsHeinrich Hoffmann, Patrick Opel, Thomas Werner
Life of this patent
Estimating the term…
Abstract
A washer fluid pump (2) for a window cleaning system includes two ventilation openings (13, 14) arranged in a housing (5) and linked with a single opening (15) arranged on the inside. A ventilation duct (18) has two sections (16, 17) arranged tangentially to the housing (5). The ventilation openings (13, 14) are separated from each other by a partition (19). This design makes it possible for the housing (5) to have a large ventilation cross section and avoids splashed water penetrating the housing (5).
Claims12
A washer fluid pump for a window cleaning system of a motor vehicle comprising:
- a housing with an electromotive drive which is arranged in the housing,
- a washer fluid pump unit which can be driven by the electromotive drive,
- an inner opening which is arranged on the inner side of the housing,
- a ventilation duct leading from the inner opening and terminating at a first end at a first ventilation opening in the housing and at a second end at a second ventilation opening in the housing, the ventilation duct defining a direct, constant-shape, generally straight-line passage extending from the first ventilation opening to the second ventilation opening in a direction substantially perpendicular to a radius of the housing and perpendicular to an axial length of the housing and allowing fluid flow from the first ventilation opening to the second ventilation opening, and
- a bulkhead positioned radially outward from the ventilation duct such that the bulkhead at least partially covers the ventilation duct,
- wherein an exterior of the housing defines a convex outer surface facing radially outward, and
- wherein the bulkhead has a convex outer surface facing radially outward that matches and forms a portion of the convex outer surface defined by the exterior of the housing, and an inner surface facing radially inward that defines a wall of the ventilation duct.
A washer fluid pump for a window cleaning system of a motor vehicle comprising:
- a housing with an electromotive drive arranged in the housing,
- a washer fluid pump unit driven by the electromotive drive,
- an inner opening arranged on the inner side of the housing,
- a passive ventilation duct leading from the inner opening and terminating at a first end at a first ventilation opening in the housing and at a second end at a second ventilation opening in the housing, the ventilation duct defining a direct, fixed, constant-shape passage extending from the first ventilation opening to the second ventilation opening and allowing fluid flow from the first ventilation opening to the second ventilation opening, and
- a bulkhead at least partially covering the ventilation duct,
- wherein the housing defines a convex outer surface, and the bulkhead has a convex outer surface that matches the convex outer surface defined by the housing, and
- wherein the direct passage defines a direct, unobstructed straight-line chord extending through the convex outer surface of the housing from the first ventilation opening to the second ventilation opening in a direction substantially perpendicular to a radius of the housing.
A method of operating a washer fluid pump for a window cleaning system of a motor vehicle comprising the steps of:
- arranging an electromotive drive in a housing,
- driving a washer fluid pump unit by the electromotive drive,
- providing an inner opening on the inner side of the housing, and
- providing a passive ventilation duct leading from the inner opening and terminating at a first end at a first ventilation opening in the housing and at a second end at a second ventilation opening in the housing, the ventilation duct defining a direct, fixed, straight-line passage extending from the first ventilation opening to the second ventilation opening in a direction substantially perpendicular to a radius of the housing and perpendicular to an axial length of the housing and to allow fluid flow from the first ventilation opening to the second ventilation opening, and a bulkhead positioned radially outward from the ventilation duct such that the bulkhead at least partially covers the direct, straight-line passage of the ventilation duct,
- wherein the housing defines a convex outer surface, and the bulkhead has a convex outer surface that matches the convex outer surface defined by the housing. pg,11
Dependencies are inferred from the claim text.