SOFA BED WITH LIGHT OPENING, IN PARTICULAR WITH AUTOMATIC DRIVE Russian patent published in 2016 - IPC A47C17/22 

FIELD: personal and household goods.

SUBSTANCE: invention relates to sofa bed with easier opening, in particular, with automatic drive. Sofa bed (1a, 1b) with easier opening, in particular with automatic drive contains fixed frame (2) forming compartment (7) for placement of mattress (8), which can be folded in at least four parts and supported by at least four movable frames (9, 10, 11, 12), one for each of said parts of said mattress (8), wherein first mobile frame (9) is connected with said fixed frame (2), at least four movable frames (9, 10, 11, 12) are mutually pivotally connected in series in relation to each other, forming kinematic chain with one degree of freedom, which can move between closed configuration, wherein said at least four movable frames (9, 10, 11, 12), in fact, mutually opposite in pairs to make cage-like structure covering said mattress (8), folded in at least four parts, and open configuration, wherein said at least four movable frames (9, 10, 11, 12), in fact, mutually aligned to form bearing surface on which mattress (8) is deployed, there are also drives (13), which are connected with said fixed frame (2) and are functionally connected with said at least four movable frames (9, 10, 11, 12) to ensure their displacement between said open configuration and said closed configuration. At that drives (13) contain at least one linear actuating device (18), which operates on straight line action (19), in fact, parallel to direction of turning said at least four moving frames (9, 10, 11, 12), wherein said actuator (18) is pivotally attached to said fixed frame (2) and functionally connected with said at least four movable frames (9, 10, 11, 12) with help of multiple levers (24, 26, 29, 32), which are connected to each other and are connected with said at least four movable frames (9, 10, 11, 12), wherein said fixed frame (2) has in lateral projection, in fact, L-shaped to make lower support (6), on which there are at least said one linear actuating device (18) and vertical rack (5). At that, said post is located in rear part of sofa bed (1a, 1b), to which above first moving frame (9) is pivoted on free end (9a), said linear actuator (18) moves slider (20), which is connected to first lever (24) of above set of levers and can move along straight guide (21) formed by above lower support (6), and said straight guide (21) is formed by horizontal guide device (22) with drive bracket (23) with possibility of sliding and makes integral at progressive motion to said slider (20) and hinged to one end (24a) of first lever (24).

EFFECT: easier conversion of sofa into bed by user.

15 cl, 18 dwg