Lumbar support assembly and corresponding seat structure
AssigneeL&P Swiss Holding AG
InventorsMaxime Samain, Bertrand Faulconnier
Life of this patent
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Abstract
A lumbar support assembly (2) comprises a support arrangement (3) which may have the form of a wire framework with two side wires (4) and a plurality of transverse wires (6). A Bowden cable arrangement (10) with a single Bowden cable is attached by two plate clips (15, 17) to the two side wires (4). A first end portion (13) of the wire (12) of the Bowden cable arrangement (10) is anchored to a front edge of a seat frame (1), while a second end portion (14) of the wire (12) is coupled to an actuator (20) for adjusting the tension of the Bowden cable. The lumbar support assembly (2) thus requires only one single Bowden cable to arch the lumbar support assembly at least in a lumbar region and to adjust the degree of lumbar support accordingly.
Claims20
A lumbar support assembly, comprising
- a support arrangement adapted to be incorporated into a seat frame,
- a Bowden cable arrangement comprising a wire guided in a sheath and being coupled to the support arrangement and being adapted to arch the support arrangement at least in a lumbar region of the support arrangement by acting on two opposite sides of the support arrangement, first attachment means for attaching the sheath of the Bowden cable arrangement to a first side of the support arrangement, and
- second attachment means for attaching the sheath of the Bowden cable arrangement to a second side of the support arrangement such that the sheath of the Bowden cable arrangement extends between the first and second attachment means,
- a first end portion of the wire of the Bowden cable arrangement extending from the first attachment means and being adapted to be connected to the seat frame, and
- a second end portion of the wire of the Bowden cable arrangement being adapted to be connected to an actuator for adjusting the tension of the wire of the Bowden cable arrangement.
A seat structure, comprising
- a seat frame,
- a lumbar support assembly coupled to the seat frame and comprising a support arrangement, a Bowden cable arrangement comprising a wire guided in a sheath and being coupled to the support arrangement and being adapted to arch the support arrangement at least in a lumbar region of the support arrangement by acting on two opposite sides of the support arrangement, first attachment means for attaching the sheath of the Bowden cable arrangement to a first side of the support arrangement, and second attachment means for attaching the sheath of the Bowden cable arrangement to a second side of the support arrangement such that the sheath of the Bowden cable arrangement extends between the first and second attachment means, a first end portion of the wire of the Bowden cable arrangement extending from the first attachment means and being connected to the seat frame, and
- an actuator for adjusting the tension of the wire of the Bowden cable arrangement of the lumbar support assembly, the actuator being coupled to a second end portion of the wire of the Bowden cable arrangement.
Dependencies are inferred from the claim text.