Height adjustable bed and automatic leg stabilizer system...

A - Human Necessities – 61 – G

Patent

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Details

A61G 7/012 (2006.01)

Patent

CA 2422823

A vertically adjustable mechanical bed consisting of a bed frame for support of a mattress and occupant attached to moveable leg means powered by a motor means. Operation of the motor means causes a bearing block attached to the leg means to move longitudinally along a guide rod means, thereby collapsing the leg means beneath the bed and moving the bed frame vertically. Collapsing the bed to its substantially lowermost position causes the bearing block to engage a spring, thereby compressing said spring between the bearing block and a transverse member of the bed frame. The energy stored by the compression of the spring is used to raise the bed from its substantially lowermost position. Pivotally attached to the leg means is a rolling means consisting of a caster and foot arrangement. During normal operation, the foot is firmly engaged with the floor surface. When the bed frame moves to its substantially uppermost position, a pin extending from the leg means and constrained in a slot on a flanged face of the rolling means engages one end of the slot, thereby causing the rolling means to pivot and the caster to engage the floor, rendering the bed horizontally mobile.

L'invention concerne un lit mécanique à réglage vertical, constitué d'un cadre conçu pour supporter un matelas et un occupant et fixé à un dispositif de pieds mobiles alimenté par un moteur. La marche du moteur entraîne un bloc support fixé au dispositif de pieds à se déplacer longitudinalement le long d'un dispositif de barre guidée, ce qui provoque l'affaissement du dispositif de pieds au-dessous du lit et l'élévation verticale du cadre de lit. L'affaissement du lit à sa position sensiblement la plus basse entraîne le bloc support à solliciter un ressort, ce qui comprime le dit ressort entre le bloc support et un élément transversal du cadre de lit. L'énergie stockée par la compression du ressort est utilisée pour élever le lit de sa position la plus basse. Un dispositif roulant, constitué d'un ensemble roulette et socle, est monté pivotant au dispositif de pieds. En mode de fonctionnement normal, le socle est solidement en contact avec le sol. Lorsque le cadre de lit passe en position la plus élevée, une broche saillant du dispositif de pieds et bloquée dans une fente sur une face bridée du dispositif roulant vient toucher une extrémité de la fente, ce qui entraîne le dispositif roulant à pivoter et les roulettes à toucher le sol, rendant le lit mobile sur le plan horizontal.

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