Displacement unit
AssigneeNeumayer Tekfor Holding GmbH
InventorMartin Lehmann
Life of this patent
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Abstract
A displacement unit comprising two shaft-shaped drive components which are displaceable in one another and each have a plurality of roller body raceways facing one another with roller bodies arranged between them. To both save weight and facilitate proper positioning of the components, a profile groove is provided between two adjacent roller body raceways of at least one drive component, the profile groove having a profile depth which is smaller than the profile depth of one of the adjacent roller body raceways.
Claims14
A displacement unit for axially limited displacement of at least two drive components mounted on one another, wherein:
- one drive component is formed with roller body raceways distributed at its inner periphery over the periphery and extending along the drive component parallel to one another,
- a further drive component is formed with roller body raceways distributed at the outer periphery over the periphery and extending along the drive component parallel to one another,
- a plurality of axially spaced roller bodies is accommodated in each of the roller body raceways,
- a profile groove with a profile depth different from the profile depth of the roller body raceways is formed between at least two roller body raceways, and
- the profile groove has a cross-section formed from two mutually spaced circular segments.
A displacement unit for axially limited displacement of at least two drive components mounted on one another, wherein:
- one drive component has a sleeve-shaped configuration and accommodates the other drive component at least partially axially within itself,
- sleeve-shaped drive component has a non-circular outer contour,
- the outer contour is formed by at least one elevation on the outer periphery which is raised radially relative to the remainder of the outer periphery,
- the sleeve-shaped drive component comprises roller body raceways on its inner periphery distributed around the periphery and extending along the drive component parallel to one another,
- the at least one radial elevation adjoins the outer periphery of said sleeve-shaped drive component,
- as viewed in the peripheral direction, a profile groove having a different profile depth from the profile depth of the roller body raceways is formed between at least two roller body raceways, and
- the drive component has a material thickness at the at least one elevation which is substantially equal to the material thickness radially outside the profile groove.
Dependencies are inferred from the claim text.