| 摘要 |
A sofa bed (1a, 1b) with facilitated opening, particularly with automatic actuation, comprising a fixed framework (2) which defines a compartment (7) for accommodating a mattress (8) that can fold into at least four parts and is supported by at least four movable frames (9, 10, 11, 12), one for each one of the parts of the mattress (8), the first movable frame (9) being associated with the fixed framework (2); the four movable frames (9, 10, 11, 12) are mutually articulated sequentially with respect to each other to define a kinematic chain, with one degree of freedom, which can move between a closed configuration, in which the four movable frames (9, 10, 11, 12) are substantially mutually opposite in pairs so as to define a cage-like structure that encloses the mattress (8) folded into at least four parts, and an open configuration, in which the four movable frames (9, 10, 11, 12) are substantially mutually aligned to define a resting surface on which the unfolded mattress (8) lies; motor means (13) are also provided which are associated with the fixed framework (2) and are functionally connected to the four movable frames (9, 10, 11, 12) for their movement between the open configuration and the closed configuration, the motor means (13) comprising at least one linear actuator (18), which operates along a straight line of action (19) which is substantially parallel to the unfolding direction of the movable frames (9, 10, 11, 12), the linear actuator (18) being pivoted to the fixed frame (2) and being functionally associated with the movable frames (9, 10, 11, 12) by a plurality of levers (24, 26, 29, 32) which are interconnected and are associated with the movable frames (9, 10, 11, 12). |
