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US 6,644,740 B2Granted
Vehicle seat lumbar support system
AssigneeLear Corporation
InventorsBert Holst, Dominic Ebefors
Life of this patent
Estimating the term…
Abstract
A vehicle seat lumbar support adjustment device includes an actuator operatively connected to a cable which extends across the seatback. A compressible plastic support structure is positioned between the cable and a cushion layer, and movable toward the cushion layer by actuation of the cable in order to adjust lumbar support for a seat occupant. Preferably, the compressible plastic support structure includes an integrally molded spring component positioned between opposing walls of the support structure.
Claims17
A vehicle seat lumbar support adjustment device comprising:
- an actuator operatively connected to a cable which extends across a seatback;
- a compressible plastic support structure positioned between the cable and a cushion layer, and movable toward the cushion layer by tensioning of the cable in order to adjust lumbar support for a seat occupant;
- wherein the plastic support structure forms a generally oval shape positioned within a larger, generally oval shape when viewed in horizontal cross-section.
A vehicle seat occupant protection system, comprising:
- a compressible plastic support structure positioned behind a cushion layer in a seatback, said plastic support structure including an integrally molded spring component positioned between opposing walls of the support structure;
- wherein said plastic support structure is sufficiently compressible such that upon rear impact at low vehicle speeds, the occupant penetrates deeply into the seatback by compressing the plastic support structure so that the occupant is retained in the seated position, and wherein the opposing walls form a generally oval shape when viewed in horizontal cross-section.
Dependencies are inferred from the claim text.