Sofa-bed having an articulated folding structure
AssigneeLampolet, S.p.A.
InventorStelio De Lorenzo
Life of this patent
Estimating the term…
Abstract
A sofa-bed having an articulated folding structure comprises a fixed carrying framework (2) to which a main movable frame (3) is engaged through a pantograph linkage (4), which main frame is movable in a vertical direction. Consecutively and rotatably connected to the main movable frame (3) are first and second auxiliary movable frames (17, 18). An interconnecting lever (20) operating between the main movable frame (3) and the second auxiliary movable frame (18) interconnects the rotational movements of the movable frames (17, 18). A synchronization lever (21) operatively connects the pantograph linkage (4) to the auxiliary movable frames (17, 18) for the purpose of timing the upward and downward displacement of the main movable frame (3) with the rotations of the auxiliary movable frames (17, 18).
Claims11
A sofa-bed having an articulated folding structure comprising:
- a fixed carrying framework (2);
- a main movable frame (3) connected to the fixed carrying framework (2) through a pantograph linkage (4), said main movable frame (3) and pantograph linkage (4) defining a lifting unit (5) for moving the main movable frame from a position in which it is housed in the bottom of the fixed carrying framework (2) to an operating raised position with respect to the fixed framework itself;
- at least one first auxiliary movable frame (17) rotatably and consecutively engaged to the main movable frame (3) at one pivot axis (16);
- at least one second auxiliary movable frame (18) rotatably and consecutively engaged to said first auxiliary movable frame (17) at a second pivot axis (19);
- and
- an interconnecting lever (20) operating between the main movable frame (3) of said lifting unit (5) and the second auxiliary movable frame (18), said first and second auxiliary movable frames (17, 18) and interconnecting lever (20) defining an overturning unit (30) for rotating the auxiliary movable frames (17 and 18) from a position in which they are folded over on the main movable frame (3) to a position in which they are consecutively aligned relative to each other and the main movable frame (3),
- wherein said sofa-bed further comprises a synchronization lever (21) which is engaged at one end (21a) thereof to the pantograph linkage (4) and at the other end to said overturning unit (30) for timing the lifting movement of said main movable frame (3) with the rotations carried out by said auxiliary movable frames (17, 18).
Dependencies are inferred from the claim text.