MANUAL FOLD-FLAT SEAT HINGE ASSEMBLY

摘要

A seat back adjustment mechanism (10) for a seat assembly enabling a seat back to be selectively positioned in various fold-forward positions relative to a seat, and locked into at least one forward position, includes a quadrant (14) supporting a cam plate (24) that interfaces with a locking member (22) to block an arm (12) rotatably supporting the quadrant. The arm defines a first locking shoulder (30) and rotatably supports a sector plate, which defines a second locking shoulder having a lock recess. The locking member selectively engages at least one of the first and second locking shoulders and preferably includes a series of pawl teeth (26) for selectively engaging the locking member to lock the seat back in a selected fold-forward position. Alternatively, the arm includes a corner portion (124) for locking the seat back in a single fold-forward position. A gear assembly (323) is preferably provided and operably supported by the quadrant for actuation of the cam plate.