ADJUSTMENT MECHANISM FOR POSITIONING A HEADREST IN AN INFANT CAR SEAT

摘要

An adjustment mechanism for positioning a headrest in an infant car seat includes a connector, a pair of gear wheels, a ratchet wheel and a brake release handle. The adjustment mechanism is installed on the back support portion of the infant car seat which formed with a longitudinal slot and a pair of toothed guiding rails mounted in parallel on either side of the longitudinal slot. The headrest is movably connected to the back support portion by the connector to move along the longitudinal slot. The pair of gear wheels and a ratchet wheel are pivoted on the connector, the pair of gear wheels being engaged with the pair of toothed guiding rails and kept synchronized rotation with the ratchet wheel. The brake release handle is biased to releasably lock the ratchet wheel and used to unlock the ratchet wheel so as to reposition the headrest.