Convertible piece of furniture, from sofa use to bed use and vice versa

Abstract

A piece of furniture, convertible from sofa use to bed use and vice versa, having a framework that supports a bed member that can be tilted onto a sofa member in a day position, in which the bed member is vertical and the sofa member can be used for sitting, and a night position, in which the bed member is horizontal and surmounts the sofa member. The piece of furniture includes an articulated system that connects the bed member to the sofa and to the framework. The bed member forms a lying surface in the night position, while the sofa member forms a sitting surface in the day position. The lying surface of the bed member substantially corresponds to the sitting surface of the sofa member. The sofa member forms, in the night position, a retracted surface different from the sitting surface.

1 . A convertible piece of furniture, from sofa use to bed use and vice versa, comprising a framework that supports a bed member that can be tilted onto a sofa member in at least two working positions: a day position, in which said bed member is in a vertical position and said sofa member can be used for sitting, and a night position, in which said bed member is rotated in a horizontal position and surmounts said sofa member; said piece of furniture further comprising an articulated system that connects said bed member to said sofa and to said framework; said bed member forming a lying surface in said night position; said sofa member forming a sitting surface in said day position; said lying surface of said bed member substantially corresponding to said sitting surface of said sofa member; said sofa member forming, in said night position, a retracted surface that is different from said sitting surface; wherein: said bed member has a bracket that has a free end hinged in said framework in a first hinge point; said framework is hinged to one end of a lever, in a second hinge point; and another end of said lever is hinged to said bed member, in a base hinge point. 
     
     
         2 . The convertible piece of furniture according to  claim 1 , wherein said bed member comprises an exposed wall, which is integral with a bed base and supports a mattress. 
     
     
         3 . The convertible piece of furniture according to  claim 1 , wherein said sofa member comprises a frame on which a padding is arranged. 
     
     
         4 . The convertible piece of furniture according to  claim 2 , wherein said framework comprises a base and an upright 
     
     
         5 . The convertible piece of furniture according to  claim 4 , wherein said base comprises at least two side walls that extend upward to form two armrests; and wherein said upright comprises at least two side walls, a rear panel and an upper panel, which are adapted to enclose, in cooperation with said exposed wall, said bed base and said mattress in said day position.