| 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). |
| 主权项 |
1. A sofa bed with facilitated opening, particularly with automatic actuation, comprising:
a fixed framework which defines a compartment for accommodating a mattress that can fold into at least four parts and is supported by at least four movable frames, one for each one of said parts of said mattress, a first of said at least four movable frames being associated with said fixed framework, said at least four movable frames being 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 said at least four movable frames are substantially mutually opposite in pairs in order to define a cage-like structure that encloses said mattress folded into at least four parts, and an open configuration, in which said at least four movable frames are substantially mutually aligned to define a resting surface on which said unfolded mattress lies; and motor means being also provided which are associated with said fixed framework and are functionally connected to said at least four movable frames for their movement between said open configuration and said closed configuration, wherein said motor means comprises at least one linear actuator which operates along a straight line of action which is substantially parallel to the unfolding direction of said at least four movable frames, said at least one linear actuator pivoted to said fixed frame and functionally associated with said at least four movable frames by a plurality of levers which are interconnected and are associated with said at least four movable frames, wherein said fixed framework has, in a side view, a substantially L-shaped configuration which defines a lower footing on which said at least one linear actuator and a vertical upright are fixed, said vertical upright arranged at a rear portion of said sofa bed, to which the first movable frame is pivoted at a free end thereof, said at least one linear actuator moving a slider associated with a first lever of said plurality of levers and movable along a fixed straight guide defined by said lower footing; and wherein said straight guide is defined by a horizontal track in which an actuation bracket is accommodated slidingly and is integral in translational motion with said slider and pivoted to one end of said first lever. |
