Drive cartridge
AssigneeFriatec Aktiengesellschaft
InventorsSimon Schwartz, Georg Jungmann, Helko Lang, Harald Schmitt, Alexander Rothermel
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Abstract
A drive cartridge comprises an actuating mechanism, in which a spindle can be guided in a hollow cylindrical drive element between two end positions at an axial distance from one another. The positions are defined by the axial length of the drive element. A dome-shaped casing surrounds the drive element in a non-rotatable and non-displaceable manner. The drive element has an external contour with an eccentric profile and the internal contour of the dome-shaped casing has a positive fit only in those areas of the drive element in which the permissible normal stress exceeds a predefined upper limit.
Claims13
A drive cartridge, comprising
- an actuating mechanism, in which a spindle can be guided in a hollow cylindrical drive element between two end positions at an axial distance from another, said positions being defined by the axial length of the drive element;
- and
- a dome-shaped casing that surrounds the drive element in a non-rotatable and non-displaceable manner;
- wherein said drive element comprises an outer contour having a out-of-roundness profile and that the internal contour of said dome-shaped casing has a positive fit only in those areas of the drive element in which the permissible normal stress exceeds a predefined upper limit;
- and
- wherein said dome-shaped casing is constructed of a profile element adjoining the drive element and an outer skin surrounding said profile element.
Dependencies are inferred from the claim text.