Patent ID: 7134717
Filing Date: 2006-11-14
Classification: B60N

Abstract:
1. A backrest ( 1 ) including a frame structure ( 2 ) and a force-generating device ( 11 ) for a vehicle seat, having a head restraint ( 3 ) which can be adjusted from an in-use position into a safety position under action of the force-generating device ( 11 ) which is effective in an accident situation, said head restraint being connected to the backrest via retaining elements protruding into the backrest, the retaining elements being displaceable relative to the backrest ( 1 ) under the action of the force-generating device ( 11 ) by a pair of slotted-guide mechanisms, each of the slotted-guide mechanisms comprising: a slotted guide: ( 14 ) and a sliding block ( 15 ) guided in the latter, wherein the sliding block ( 15 ), when displaced from the in-use position into the safety position, executes a rotational movement enabling the sliding block to be locked in one of a frictional and form-fitting manner in the slotted guide ( 14 ), wherein the retaining elements have at least two guide rods ( 5 ) which are guided in a longitudinally displaceable and fixable manner in guide sleeves ( 6 ), the guide sleeves being connected to each other via a strut ( 9 ) and the force-generating device ( 11 ) engaging, on one end, on the strut and, at another end, on the frame structure ( 2 ) of the backrest ( 1 ).