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US 9,115,717 B2Granted
Axial disc and gear pump with axial disc
AssigneeRobert Bosch GmbH
InventorsOliver Gaertner, Rene Schepp, Andreas Klein, Benjamin Scheibitz
Life of this patent
Estimating the term…
Abstract
An internal gear pump for a hydraulic vehicle brake system has axial discs which, by the exertion of pressure on the outer sides thereof, are pressed against gearwheels of the internal gear pump for lateral sealing, provided on the inner sides thereof with grooves through which the gearwheels convey brake fluid as they are driven in rotation, which brake fluid thereby passes, for lubrication, between the axial discs and the gearwheels of the internal gear pump.
Claims6
An axial disc for a gear pump, comprising:
- a surface structure on an inside of the axial disc facing gearwheels of the gear pump,
- wherein the surface structure conducts fluid conveyed by the gear pump between the gearwheels and the axial disc,
- wherein the surface structure includes a rough surface on the inside of the axial disc, and
- wherein the inside of the axial disc has the rough surface in a region in which the axial disc contacts at least one of the gearwheels of the gear pump.
1 more element
An axial disc for a gear pump, comprising:
- a surface structure on an inside of the axial disc facing gearwheels of the gear pump,
- wherein the surface structure includes at least one of a groove and a rough surface configured to conduct fluid conveyed by the gear pump between the gearwheels and the axial disc, and
- wherein the axial disc has an outside, and a pressure field is defined on the outside.
A gear pump comprising:
- two intermeshing gearwheels;
- and
- an axial disc supported on one side of the gearwheels,
- wherein the gear pump is pressurized at an outside of the axial disc, facing away from the gearwheels, so that the axial disc is pressed against the gearwheels,
- wherein, on an inside facing the gearwheels, the axial disc has a surface structure configured to conduct fluid conveyed by the gear pump between the gearwheels and the axial disc,
- wherein the surface structure includes a rough surface on the inside of the axial disc, and
- wherein the inside of the axial disc has the rough surface in a region in which the axial disc contacts at least one of the gearwheels of the gear pump.
4 more elements
Dependencies are inferred from the claim text.