Eccentric arrangement for a reciprocating piston pump
AssigneeRobert Bosch GmbH
InventorsErnst-Dieter Schaefer, Guenter Krenz
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Abstract
The present invention relates to an eccentric arrangement for a reciprocating piston pump, having a drive shaft drivable by a drive device, an eccentric part of a rubber-elastically deformable material is disposed on the drive shaft in a manner fixed against relative rotation. A bearing ring is provided on an outer circumferential surface of the eccentric part, by which ring a reciprocating piston is displaceable driven substantially perpendicular to the drive shaft. To avoid stroke losses, first and second support faces are provided on the drive shaft which the eccentric part disposed between them in such a way that the eccentric part rests with its axial ends on the first and second support faces.
Claims20
An eccentric arrangement for a reciprocating piston pump, comprising a drive shaft drivable by a drive device,
- an eccentric part comprising a rubber-elastically deformable material disposed on the drive shaft in a manner fixed against relative rotation,
- a bearing ring, provided on an outer circumferential surface of the eccentric part, said bearing ring drives a reciprocating piston, said reciprocating piston is displaceable substantially perpendicular to the drive shaft,
- first and second support faces (15', 26) are provided on the drive shaft (10), and the eccentric part (18) is disposed between said first and second support faces (15', 26) in such a way that the eccentric part (18) rests with oppositely disposed axial ends on the first and second support faces (15', 26).
Dependencies are inferred from the claim text.