Folding cot

Abstract

A folding cot that can take up an unfolded position and a folded position, comprising a cot base that is oriented horizontally in the unfolded position, a first frame ( 5 ) that is oriented vertically in the unfolded position, a second frame ( 1 ) that is oriented vertically in the unfolded position, and a first Sarrus mechanism (S 1 ) or similar mechanism comprising at least two articulated arms and guiding the movement of these frames ( 5, 1 ) toward/away from one another during the folding/unfolding of the cot. Each arm connects the first and second frames ( 1, 5 ) together. The cot base is formed, at least in part, by a lower arm of the first mechanism (S 1 ).

1 . A folding cot configured to move between an unfolded position and a folded position, comprising:
 a cot base that is oriented horizontally in the unfolded position;   a first frame that is oriented vertically in the unfolded position;   a second frame that is oriented vertically in the unfolded position;   a third frame that is oriented vertically in the unfolded position;   a first Sarrus mechanism comprising the first frame, the second frame and at least two first articulated arms, namely a lower arm and a side arm, the first articulated arms each connecting the first and second frames together and guiding the movement of the first and second frames toward/away from one another during the folding/unfolding of the cot; and   a second Sarrus mechanism comprising the second frame, the third frame and at least two second articulated arms, namely a lower arm and a side arm, the second articulated arms each connecting the second and third frames together and guiding the movement of the second and third frames toward/away from one another during the folding/unfolding of the cot,   wherein the cot base is formed, at least in part, by the lower arm of the first Sarrus mechanism and the lower arm of the second Sarrus mechanism.   
     
     
         2 . The folding cot as claimed in  claim 1 , wherein the first Sarrus mechanism allows the translational movement of the first frame with respect to the second frame along a longitudinal axis of the cot, and wherein the second Sarrus mechanism allows the translational movement of the third frame with respect to the second frame along the longitudinal axis. 
     
     
         3 . (canceled) 
     
     
         4 . The folding cot as claimed in  claim 1 , wherein the first and the second Sarrus mechanisms are disposed symmetrically with respect to the second frame. 
     
     
         5 . The folding cot as claimed in  claim 1 , wherein the lower arm of the first and/or second Sarrus mechanism folds upward and wherein, in the folded position, the top of the lower arm is located below the side arm(s) of the mechanism. 
     
     
         6 . The folding cot as claimed in  claim 1 , wherein the cot comprises side barriers that extend between the frames and are oriented vertically in the unfolded position, and wherein the first and/or second Sarrus mechanism comprises two side arms that form, at least in part, the side barriers of the cot. 
     
     
         7 . The folding cot as claimed in  claim 6 , wherein, in the folded position, vertices of the two side arms are situated opposite one another and at a distance from one another. 
     
     
         8 . The folding cot as claimed in  claim 1 , wherein the cot exhibits symmetry with respect to a longitudinal median plane oriented vertically in the unfolded position. 
     
     
         9 . The folding cot as claimed in  claim 1 , wherein the second frame comprises a lower cross member, and wherein the cot base is formed in part by this lower cross member. 
     
     
         10 . The folding cot as claimed in  claim 1 , further comprising a mattress, wherein the mattress is accommodated inside one of the frames in the folded position. 
     
     
         11 . The folding cot as claimed in  claim 1 , wherein the mattress is mounted in a pivoting manner on the frame. 
     
     
         12 . The folding cot as claimed in  claim 11 , wherein a tie extends between the mattress and the lower arm, such that, starting from the unfolded position, the pivoting of the mattress with respect to the frame brings about the folding of the lower arm. 
     
     
         13 . The folding cot as claimed in  claim 1 , wherein each articulated arm is formed by two segments that are hinged together and to the adjacent frames by hinges, a first hinge allowing one of the segments to rotate with respect to one of the frames about a first rotation axis, a second hinge allowing the segments to rotate with respect to one another about a second rotation axis, and a third hinge allowing the other segment to rotate with respect to the other frame about a third rotation axis, the first, second and third rotation axes being parallel to one another. 
     
     
         14 . The folding cot as claimed in  claim 1 , wherein at least one of the arms is equipped with a stop system that prevents the arm from folding toward the outside of the cot in the unfolded position.