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US 6,318,238 B1Granted
Wobbling drive of an axial piston machine
AssigneeAlfred Kärcher GmbH & Co. KG
InventorsKlaus Becker, Berthold Braun, Boris Baumann, Robert Nathan
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AssigneeAlfred Kärcher GmbH & Co. KG
InventorsKlaus Becker, Berthold Braun, Boris Baumann, Robert Nathan
Estimating the term…
A wobble drive in an axial piston machine, particularly the axial piston pump of a high-pressure cleaning device, having a wobble body (1) rotatable around an axis of rotation (D) and a wobble plate (2) driving with its front side at least one piston (10a) positioned parallel to the axis of rotation D, a roller bearing (3) positioned between the wobble body (1) and the wobble plate (2) exhibiting a bearing axis inclined to the axis of rotation (D). In order to insure even at elevated rotary speeds of the wobble body (1) and thus also of the rolling bodies (6) that the rolling bodies (6) are securely held in their races (4,5) in spite of the elevated centrifugal forces acting on them, it is proposed that the wobble plate (2) be provided with a rim (7) overlapping the wobble body (1), with the rolling bodies (6) being positioned between the rim (7) and the wobble body (1).
A wobble drive of an axial piston machine for an axial piston pump in a high-pressure cleaning device, comprising a wobble body (1) rotatable around an axis of rotation (D) and a wobble plate (2) inclined to the axis of rotation (D) and driving with a front side thereof at least one piston (2a), a roller bearing (3) positioned between the wobble body (1) and the wobble plate (2), the wobble plate (2) includes a rim (7) overlapping the wobble body (1), rolling bodies (6) of the roller bearing (3) are positioned between the rim (7) and the wobble body (1), and an end of the wobble body (1) opposite the wobble plate (2) includes an inwardly directed radial flange (10) with a receptacle (11, 19) for a drive shaft.
The wobble drive of an axial piston machine for an axial piston pump in a high-pressure cleaning device, comprising a wobble body (1) rotatable around an axis of rotation (D) and a wobble plate (2) inclined to the axis of rotation (D) and driving with a front side thereof at least one piston (2a), a roller bearing (3) positioned between the wobble body (1) and the wobble plate (2), the wobble plate (2) includes a rim (7) overlapping the wobble body (1), rolling bodies (6) of the roller bearing (3) are positioned between the rim (7) and the wobble body (1), the wobble body further including two angular-contact ball bearings (3, 11), one of which is positioned between the wobble plate (2) and the wobble body (1) and the other between the wobble body (1) and a housing, the bearing axis of the second angular-contact ball bearing (11) is coaxial with the axis of rotation (D), the second angular-contact ball bearing (11) includes an outer ring (14) with a disk-shaped part (16) and an axial rim (17), the disk-shaped part (16) is combined as one piece with the rim (17) via a corner section (18), and the ball race (13) is formed on the corner section (18).
Dependencies are inferred from the claim text.