Power seat track having a flexible support assembly for a...

B - Operations – Transporting – 60 – N

Patent

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Details

B60N 2/02 (2006.01) B60N 2/06 (2006.01) B60N 2/07 (2006.01)

Patent

CA 2505528

A powered track assembly (20) is provided for allowing selective forward and rearward adjustment of a seat assembly (10) along an interior floor of an automotive vehicle. The upper track (24) is fixedly secured to a bottom portion of the seat assembly (10). A rigid shaft (32) having a generally continuous helical thread (38) is rotatably supported by the upper track (24). A plurality of nuts (40) is threadingly engaged with the shaft (32). A cage (42) having a plurality of compartments (58) is fixedly secured to the lower track (22). Each compartment (58) supports one nut (40) to allow relative rotational movement of the rigid shaft (32) relative to the nuts (40). The nuts (40) are allowed a predetermined amount of movement within the respective compartments (58) to prevent binding between the nuts (40) and the rigid shaft (32) due to relative lateral or vertical movement between the upper and lower tracks.

L'invention concerne un ensemble de glissières à commande électrique (20) permettant le réglage avant et arrière sélectif d'un ensemble siège le long d'un plancher intérieur d'un véhicule à moteur. La glissière supérieure (24) est solidement fixée à une partie inférieure de l'ensemble siège (10). Une tige rigide (32) présentant un filetage hélicoïdal (38) généralement continu est maintenue de manière rotative par la glissière supérieure. Plusieurs écrous (40) sont engrenés par filetage dans la tige (32). Une cage (42) dotée d'une multitude de compartiments (58) est solidement fixée à la glissière inférieure (22). Chaque compartiment (58) soutien un écrou (40) de manière à permettre un mouvement rotatif relatif de la tige rigide (32) par rapport aux écrous (40). Les écrous (40) ont une liberté de mouvement prédéterminée à l'intérieur des compartiments (58) respectifs de manière à empêcher le blocage entre les écrous (40) et la tige rigide (32), grâce au déplacement latéral ou vertical relatif entre les glissières supérieure et inférieure.

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