Method of providing a seat back involving the use of a...

A - Human Necessities – 47 – C

Patent

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Details

A47C 7/40 (2006.01) A47C 7/02 (2006.01) B60N 2/66 (2006.01)

Patent

CA 2547210

A method of providing a seat back (17) of a seat assembly including shape defining steps that involve the use of a design manikin (14). A contour of the centerline (15) for the seat back is determined according to a hip point (10), or 'h-point', and a torso line (12) of the manikin. The determination includes definition of a lumbar apex reference point (16) above the hip point along the torso line, a lumbar shape reference circle (40) defined as being behind the torso line and spaced apart therefrom, a forward lumbar prominence line (30) which is parallel to the torso line and tangential to the lumbar shape reference circle, and a rearward lumbar prominence (20) line which is parallel to and rearward of the forward lumbar prominence line.

L'invention porte sur un procédé de profilage d'un dossier (17) de siège comportant des étapes de définition de la forme utilisant un mannequin (14). A cet effet, on détermine la ligne centrale (15) du contour du dossier passant par un "point de hanche" et par la ligne du torse (12) du mannequin. La détermination consiste: à définir: un point (16) de référence du sommet lombaire situé au-dessus du point de hanche, le long de la ligne de torse; un cercle (40) lombaire de référence situé derrière la ligne de torse et en étant séparé; une ligne (30) proéminente lombaire avant parallèle à la ligne de torse et tangente au cercle (40) lombaire de référence; et une ligne (30) proéminente lombaire arrière parallèle à la ligne proéminente lombaire avant et située à derrière elle.

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