Device for adjusting the backrest of a seat with a double articulation and a single control

摘要

The adjuster for the seat back of a motor vehicle has a toothed sector (4) centred on a first pivot (C1). The seat back (B) is attached to two arms extending on each side of a casing (8a,b) and pivot around a second point (C2) on the casing. Each arm has a toothed sector (13). The casing has upper and lower (22,20) locking bolts with an actuating cam (27) between them to be operated by a single control.