Device for synchronizing the tilt of a chair back and seat

Details Device for synchronizing the tilt of a chair back and seat Device for synchronizing the tilt of a chair back and seat

A - Human Necessities

47

C

A47C 1/032 (2006.01)

Patent

CA 2751696

Device for synchronizing the tilt of a chair back and seat, of the type comprising a frame of the chair back (5), a frame of the seat (2) and a support (1) integral with the base of the chair, as well as at least one first crank (3), integral with the afore said frame of the chair back (5), and hinged (6, 7) at the rear to the frame of the seat (2) and to the support (1), and at least one second crank (4), hinged (8, 9) at the front to the frame of the seat (2) and to the support (1). The afore said first crank (3) and the second crank (4), with the frame of the seat (2), determine a articulated quadrilateral, wherein such a first crank (3) and such a second crank (4) lie substantially on skew lines.

L'invention porte sur un dispositif pour synchroniser l'inclinaison d'un dossier de siège et d'un siège, du type qui comporte un cadre de dossier de siège (5), un cadre de siège (2) et un support (1) intégré à la base du siège, ainsi qu'au moins une première manivelle (3), intégrée à l'avant dudit cadre de dossier de siège (5), et articulée (6, 7) à l'arrière du cadre de siège (2) et au support (1), et au moins une deuxième manivelle (4) articulée (8, 9) à l'avant au cadre de siège (2) et au support (1). Ladite première manivelle (3) et la deuxième manivelle (4), avec le cadre de siège (2), déterminent un quadrilatère articulé, cette première manivelle (3) et cette deuxième manivelle (4) se trouvant sensiblement sur des lignes obliques.

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