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US 6,616,091 B2Granted
Cable winding drum
AssigneeDelphi Technologies, Inc.
InventorsWilliam L. Priest, Kevin Wright, Mark D. Nicholas
Life of this patent
Estimating the term…
Abstract
An automatic sliding door cable mechanism with a take up guide member (46) mounted in a drum (14) for taking up slack of a cable during installation of the cable. A second drum (16) has an elliptical profile drum helix (96) for increasing durability of the operating cable for the automatic door.
Claims8
A cable winding drum for closing a vehicle power sliding door, said drum comprising:
- a first helical outer surface with a first radius about an axis of rotation for taking up cable at a first rate when closing said vehicle door;
- a second outer elliptically contoured helical surface being tangent with said first helical surface in proximity to a major axis of said second outer elliptically contoured helical surface;
- the take-up drum when in full closed position having a cable extended out on the second outer elliptically contoured helical surface to its minor axis at a point substantially closer to the axis of rotation then said first helical outer surface.
A drum for winding up a cable in tension by rotation about a central axis of rotation, said drum comprising:
- a first outer surface with a general first radius about the axis of rotation for taking up cable at a first rate;
- a second outer facing smoothly contoured surface having a greater bent section tangent to said first outer surface with a decreasing radius to said axis of rotation and a less bent section of said second outer facing smoothly contoured surface about said drum, the maximum tension force of said cable being misaligned and at a different point of the cable from the maximum bending force of the cable,
- the second outer facing smoothly contoured surface having an elliptical contour.
Dependencies are inferred from the claim text.