Lumbar support device

A - Human Necessities – 47 – C

Patent

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Details

A47C 7/46 (2006.01)

Patent

CA 2443737

A lumbar support device (10) has a seat frame (12), a pair of brackets (18, 20) connected to the seat frame, a spring assembly (22) connected to the pair of brackets in such a manner as to form a center section (28) traversing the seat frame and a pair of cantilevered ends (24, 26) on opposite sides of the center section, and an actuator assembly (30) operatively connecting the cantilevered ends. The pair of brackets respectively provide a pair of fulcrums (32, 34) about which the cantilevered ends can rotate. In operation, the actuator assembly moves the cantilevered ends of the spring assembly to bow the center portion. The lumbar support device may also have a single cantilevered end.

L'invention concerne un dispositif de support lombaire qui comporte un cadre de siège, une paire de supports reliés audit cadre de siège, un ensemble ressort relié aux paires de supports de telle sorte qu'il forme une section centrale traversant le cadre de siège, et une paire d'extrémités en porte-à-faux situées sur les côtés opposés de la section centrale, ainsi qu'un ensemble actionneur qui relie de façon fonctionnel les extrémités en porte-à-faux. La paire de supports constitue une paire de points d'appui autour desquels les extrémités en porte-à-faux peuvent tourner. En cours d'utilisation, l'ensemble actionneur déplace les extrémités en porte-à-faux de l'ensemble ressort pour cintrer la partie centrale. Ce dispositif de support lombaire peut également comporter une seule extrémité en porte-à-faux.

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