Fold-flat seat reclining and locking mechanism

B - Operations – Transporting – 60 – N

Patent

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Details

B60N 2/235 (2006.01) B60N 2/20 (2006.01)

Patent

CA 2448372

A seat reclining and fold-flat mechanism (30, 30') for reclining the seat-back (24), folding the seat-back (24) flat and locking the seat in an upright or reclined position. The mechanism includes an arm (32, 32'), a pawl (40, 70), and a locking member (60,77). The arm (32, 32') is pivoted to the frame (22) at one end (33) and attached to the seat-back (24) at a second opposite end (35) to pivot the seat-back (24) relative to the frame (22). The pawl (40, 70) is pivoted to the frame (22) and pivots between a locked position, in which the pawl (40, 70) engages the arm (32, 32') to prevent the arm (32, 32') from pivoting, and a released position, in which the pawl (40, 70) releases the arm (32, 32') allowing the arm (32, 32') to pivot. The locking member (60, 77) secures the pawl (40, 70) in the locked position, thereby securing the seat- back (24) in an upright or reclined position even when substantial force is executed on the seat-back (24).

L'invention concerne un mécanisme de pliage à plat et d'inclinaison de siège (30, 30') permettant d'incliner le dossier (24), de plier le dossier (24) à plat et de verrouiller le siège dans une position verticale ou inclinée. Ce mécanisme comprend un bras (32, 32'), un cliquet (40, 70), et un élément de verrouillage (60,77). Le bras (32, 32') est amené à pivoter dans le châssis (22) à une extrémité (33) et est rattaché au dossier (24) à une seconde extrémité opposée (35) pour faire pivoter le dossier (24) par rapport au châssis (22). Le cliquet (40, 70) est amené à pivoter dans le châssis (22) et pivote entre une position verrouillée, dans laquelle le cliquet (40, 70) se met en prise avec le bras (32, 32') pour empêcher ce dernier (32, 32') de pivoter, et une position de desserrée dans laquelle le cliquet (40, 70) libère le bras (32, 32'), permettant à ce dernier (32, 32') de pivoter. L'élément de verrouillage (60, 77) fixe le cliquet (40, 70) dans la position verrouillée, fixant ainsi le dossier (24) dans une position verticale au inclinée même lorsqu'une force substantielle est exercée sur le dossier (24).

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