| 摘要 |
<p>The invention relates to a seat 10 for a vehicle, the seat 10 comprising a seat part 16, headrest 26, and a backrest 22 connected to the seat part 16, wherein the seat 10 includes an actuating device 38 configured to pivot at least an upper portion 30 of the backrest 22 towards the seat part 16 in case of an accident, e.g. a frontal impact. Actuating device 38 includes a gas generator (e.g. a pyrotechnic device) configured to effect translational movement of gear road 42, resulting in rotational movement of gear wheel 40 thereby pivoting upper portion 30 about axis 32. Seat 10 may be a front seat. Thus, a collision of the head (52) of a rear occupant (14) sitting in a rear seat (12) and backrest 22 is avoided. An engine control unit (ECU) may detect a frontal impact using crash sensor (60) and ignite gas generator in dependence upon a pressure signal from pressure sensor (58) indicative of a rear passenger sitting in rear seat (12).</p> |
