| CPC A47C 7/5068 (2018.08) [A47C 1/034 (2013.01); A47C 1/035 (2013.01); A47C 17/13 (2013.01)] | 10 Claims |
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1. A foot-lifting device for sofas comprising:
a fixed element (0) configured to be constrained in a substantially vertical position to a front portion of a structure (101) of a sofa (100);
a footrest (11) which is movable with respect to said fixed element (0) between a closed configuration and an open configuration;
two kinematic mechanisms connecting said footrest (11) to said fixed element (0); and
wherein in a closed configuration said footrest (11) is substantially vertical, in the open configuration said footrest (11) is in an upwards rotated position and translated forward with respect to a position of the closed configuration; and
wherein in both said open and closed configurations, an extension (1) of said device is wholly in front of the structure (101) of said sofa (100), and wherein each kinematic mechanism comprises a chain of four articulated quadrilaterals: a first quadrilateral, a second quadrilateral, a third quadrilateral and a fourth quadrilateral, said four quadrilaterals comprise:
a first rod (1),
a second rod (2),
a third rod (3),
a fourth rod (4)
a fifth rod (5),
a sixth rod (6),
a seventh rod (7),
a eighth rod (8),
a ninth rod (9),
a tenth rod (10);
wherein the first quadrilateral comprises:
the first rod (1),
the second rod (2), both connected to the third rod (3) at a hinge (13), both the first rod (1) and the second rod (2) are anchored to the fixed element (0);
the second quadrilateral comprises:
the first rod (1) hinged to said fixed element (0) and to the seventh rod (7) at said hinge (13), which is connected to the sixth rod (6) anchored to the fixed element (0);
the third quadrilateral comprises:
the seventh rod (7) connected to the ninth rod (9), which is connected to the eighth rod (8) which is connected to the third rod (3);
the fourth quadrilateral comprises:
the ninth rod (9) connected to a footrest (11),
the tenth rod (10) connected to the footrest (11),
the eighth rod (8) connected to both the ninth rod (9) and the tenth rod (10); and
wherein both the first and the second articulated quadrilaterals share the first rod (1) hinged to said fixed element (0).
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