A self-stabilizing support assembly for an item of furniture

A - Human Necessities – 47 – B

Patent

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Details

A47B 91/16 (2006.01)

Patent

CA 2750623

A support assembly (14) for an item of furniture has an elongated support structure (16) with a first pair of feet (18) fast with the support structure at its lower end; a passage defining arrangement defining a guide passage fast with the support structure and extending lengthwise; a support member displaceable with respect to the support structure which has a second pair of feet at its lower end; an elongated a guided pin (38) fast with the displaceable support member that is complementary to and longitudinally slidably engaged with the passage (34) defining arrangement, so that the displaceable support member is slidably displaceable along a rectilinear guide path which is transverse to lines drawn between both the pairs of feet, the passage defining arrangement (36) comprising a hollow carrier with a pair of longitudinally spaced precision washers (39) which engage the guided pin, the dimensions of the washers and the guided pin being such that automatic frictional engagement of the guided pin occurs, in use, with inner walls of the washers in response to pivoting of the displaceable support member about a pivot axis which is transverse to the displaceable support member' s guide path, automatically to anchor the displaceable support member frictionally against sliding displacement relative to the support structure.

La présente invention concerne un ensemble support (14) destiné à un meuble. Il comporte, en premier lieu une structure support de forme allongée (16) à l'extrémité inférieure de laquelle est fixée une paire de pieds (18), en deuxième lieu un dispositif formant passage définissant un passage de guidage solidaire de la structure support et se présentant dans le sens de la longueur, en troisième lieu un élément support mobile par rapport à la structure support et dont l'extrémité inférieure est pourvue d'une seconde paire de pieds, et en quatrième lieu une broche de guidage de forme allongée (38), solidaire de l'élément support mobile complémentaire du dispositif formant passage (34) dans lequel elle coulisse dans le sens de la longueur, ce qui fait que l'élément support mobile vient coulisser dans un chemin de guidage rectiligne, perpendiculaire à la ligne réunissant les deux pieds de la paire. Le dispositif formant passage (36) comprend un élément porteur creux pourvu d'une paire de rondelles de précision (39) longitudinalement espacées l'une de l'autre et touchant la broche guidée. Les dimensions des rondelles et de la broche guidée sont calculées pour qu'en fonctionnement, en venant frotter sur les rondelles lors du pivotement de l'élément support mobile autour d'un axe de pivotement perpendiculaire au chemin de guidage de l'élément support mobile, la broche guidée vienne bloquer automatiquement l'élément support mobile sous l'effet d'une friction arrêtant le coulissement par rapport à la structure support.

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