Vehicular seat assembly having a cam driven self positioning...

B - Operations – Transporting – 60 – N

Patent

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Details

B60N 2/48 (2006.01) B60N 2/20 (2006.01) B60N 2/34 (2006.01)

Patent

CA 2436004

A seat assembly (10) comprises a seat cushion (12) having front and rear portions, and a seat back (14) having upper and lower portions. The seat back (14) is operatively connected at the lower portion to the rear portion of the seat cushion (12) for pivotal movement relative to the seat cushion (12) between a plurality of reclined seating positions and a forwardly folded flat position. The seat back (14) further includes a front surface for supporting the back of an occupant seated on the seat assembly (10). A head restraint (42) having a front surface for supporting the head of the occupant seated on the seat assembly (10) is pivotally coupled to the upper portion of the seat back (14) and moveable relative to the seat back between a plurality of angled head supporting positions and a forwardly folded stowed position defined by the front surface of the head restraint being generally perpendicular to the front surface of the seat back (14). The seat assembly (10) further includes a mechanism operatively interconnecting the head restraint (42) to the seat back (14) for providing automatic and continuous pivotal adjustment of the head restraint (42) to one of the head supporting positions in response to pivotal adjustment of the seat back to one of the reclined seating positions. The mechanism further provides automatic and continuous pivotal movement of the head restraint (42) between one of the head supporting positions and the stowed position in response to pivotal adjustment of the seat back (14) between one of the reclined seating positions and the forwardly folded positions.

L'invention concerne un ensemble siège, à coussin doté de parties avant et arrière, et à dossier doté de parties supérieure et inférieure. Le dossier est relié opérationnel avec la zone inférieure de la partie arrière du coussin, ce qui permet un mouvement de pivot par rapport au coussin, entre une pluralité de positions d'inclinaison et une position à plat de repli vers l'avant. En outre, le dossier comporte une surface avant qui soutient le dos de l'occupant. Un appui-tête à surface avant soutenant la tête de l'occupant est relié en pivot à la partie supérieure du dossier, mobile par rapport au dossier entre une pluralité d'angles de soutien et une position de rangement pliée vers l'avant de l'appui-tête caractérisée en ce que la surface avant de l'appui-tête est en position généralement perpendiculaire à la surface avant du dossier. Par ailleurs, l'ensemble siège comprend un mécanisme d'interconnexion opérationnelle pour l'appui-tête et le dossier, ce qui assure un réglage en pivot automatique et continu de l'appui-tête sur l'une des positions de soutien, suite au réglage en pivot du dossier sur l'une des positions d'inclinaison. Enfin, le mécanisme permet le mouvement en pivot automatique et continu de l'appui-tête entre l'une des positions de soutien et la position de rangement, suite au réglage en pivot du dossier entre l'une des positions d'inclinaison et la position de rangement pliée vers l'avant.

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