Abstract: The headrest (1) comprises a translation guidance assembly (10) guided along a spindle (2) attached to the seat back and an articulation assembly (20) that is mounted swivelling on the guidance assembly, around an axis (7).A locking member (30) swivels on the guidance assembly (10) around an axis (8) that is parallel to the axis (7), between a locked and an unlocked position. The locking member comprises a pad (31) shaped to press on the spindle (2) in the locked position, and a head (32) that is shaped to lock on a curved section (23), attached to the articulation assembly. In this locked position, that the locking member takes under the effect of inertia after a collision, the headrest can neither pivot backwards nor slide downwards.Application of the headrest is directed to automotive vehicle seats.

Abstract: A vehicle seat includes a backrest and a seat part which is formed by a cushion secured to a first rigid armature itself supported by a second rigid armature on which the backrest is mounted, it being possible for the first armature to be moved back and forth with respect to the second armature and the second armature being supported by a raising mechanism. This raising mechanism includes at least one raising connecting piece having a driving portion which, with respect to the second armature, undergoes a backward relative movement when the seat part is moved up and a forward relative movement when the seat part is moved down, this driving portion being mechanically linked with the first armature.

Abstract: A vehicle seat has a cushion supported by a suspension web extending within a rigid frame. The suspension web is elastically deformable in traction in a longitudinal direction and it is fixed to the frame at one of its longitudinal ends, while its other longitudinal end is fixed to a portion of a raising mechanism enabling the height of the seat proper to be adjusted by the user acting directly on the seat proper. The suspension web exerts traction on the raising mechanism that urges the seat proper upwards.

Abstract: A vehicle seat includes a seat part which is formed by a cushion secured to a first armature itself supported by a second armature on which the backrest is mounted, it being possible for the first armature to be moved back and forth with respect to the second armature. The first armature includes a rear part which is suspended from the second-armature by at least one rear connecting piece, and the first armature further includes a front part which is linked to the second armature by a front mechanism compatible with the rocking motion of the rear part of the first armature. When a user is seated in the seat, the first armature is urged backward by the weight of the user.

Abstract: The seat comprises several swivelling pins parallel with each other and about which the seat nose pivots successively from a given position to a following one, while the seat nose has the general shape of a polygon, the successive sides of which have increasing lengths. The position of said pins in relation to said sides is such that the seat nose surface facing upwards in each one of said positions is substantially in prolongation of the top surface of the cushion and in close proximity to it.

Abstract: The invention relates to a seatback frame for a vehicle seat, comprising a lower structure provided with two side uprights, and an upper structure provided with a horizontal torsion bar surmounted by an arch. The first end of the torsion bar is prevented from rotating relative to one of the two uprights of the lower structure and is secured to one end of the arch. The second end of the torsion bar is mounted to pivot freely relative to the other side upright of the lower structure, while being secured to the other end of the arch. A seat belt is mechanically connected to the arch of the upper structure, with said upper structure being dimensioned so as to deform plastically when the seat belt is subjected to a traction force.

Abstract: A seat base framework for vehicle seats includes a frame made of section pieces which includes two lateral longitudinal members and a front cross member. This frame consists of two rigid section pieces which have an overall U-shape, the bases of the two section pieces being arranged parallel to one another toward the front to form the cross member of the frame and the lateral branches of the two section pieces forming the two lateral longitudinal members of the frame in association with two vertical rigid plates, the rear ends of the lateral branches of the same longitudinal member being separated from one another vertically and fastened to one of the rigid plates, and the two section pieces being fastened rigidly to one another at two front fastening points.