SEAT FOR THE PASSENGER OF A MOTOR VEHICLE

摘要

The invention relates to a seat (2) for the passenger of a motor vehicle with a seat part (4), a back of the seat (6) and a head rest (14). Said back of the seat (6) comprises a first back part (8) linked with the seat part (4) and a second back part (12) which carries the head rest (14) and can be pivoted with respect to the first back part (8). A part of the forces exerted by the passenger of the motor vehicle on the back of the seat (6) in the case of a rear collision is used to move the head rest (14) closer to the head of the passenger. The aim of the invention is to provide a means for pivoting the head rest (14) without delay and for restraining it with a relatively strong force upon impact of the head. To this end, at least a part of the forces exerted by the passenger of the motor vehicle on the first lower back part (8) in the case of a rear collision is transmitted to the second upper back part (12) in such a manner that said second upper back part is pivoted towards the front relative to the first back part (8) together with the head rest (14), thereby moving the head rest (14) closer to the head of the passenger of the motor vehicle.