Axial piston pump
AssigneeContelec AG
InventorsMeric Amstutz, Rolf Bachmann
Life of this patent
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Abstract
An axial piston pump having several pistons has a magnetic encoder (5), which is arranged on a swash plate, and a magnetic field sensor, which is arranged in such a way that it faces towards the magnetic encoder (5). The magnetic encoder (5) has at least two permanent magnets (2, 3) and a plate (4) which consists of a ferromagnetic material. The permanent magnets (2, 3) are arranged on the plate (4) in such a way that they each faces a magnetic pole towards the plate (4), and this pole is at least partially covered by the plate (4) in each case.
Claims8
An axial piston pump (6) having several pistons (64), having a magnetic encoder (5) arranged on a swash plate (65), and a magnetic field sensor (7) which is arranged in such a way that it faces towards the magnetic encoder (5), characterised in that the magnetic encoder (5) has a housing made of a non-ferromagnetic material, which has at least two recesses (121, 122) in which at least two permanent magnets (2, 3) are arranged and a plate (4) which consists of a ferromagnetic material, where the at least two recesses are covered by the plate, and wherein the at least two permanent magnets (2, 3) are arranged on the plate (4) in such a way that they each face a magnetic pole (21, 31) towards the plate (4), and each pole (21, 31) is at least partially covered by the plate (4) in each case, and where all surfaces of the permanent magnets (2, 3) which do not contact the plate (4) are surrounded by at least one non-ferromagnetic material.
Dependencies are inferred from the claim text.