Folding sofa

Abstract

A folding sofa, including a foldable seat cushion and a foldable back cushion; the foldable back cushion has a first U-shaped cushion and a second U-shaped cushion on which the first U-shaped cushion is stacked; an open end of the first U-shaped cushion is rotatably connected to an open end of the second U-shaped cushion; one end of the second U-shaped cushion opposite to the open end is rotatably connected to the foldable seat cushion. The folding sofa allows folding and unfolding in different ways conveniently so that the folding sofa can be used in different forms to adapt to various applications.

What is claimed is: 
     
         1 . A folding sofa, comprising a foldable seat cushion and a foldable back cushion; the foldable back cushion comprises a first U-shaped cushion and a second U-shaped cushion; the first U-shaped cushion is stacked on the second U-shaped cushion; an open end of the first U-shaped cushion is rotatably connected to an open end of the second U-shaped cushion; and one end of the second U-shaped cushion opposite to the open end of the second U-shaped cushion is rotatably connected to the foldable seat cushion. 
     
     
         2 . The folding sofa of  claim 1 , wherein the foldable seat cushion comprises a first cushion block, a second cushion block, and a third cushion block which are connected in sequence and are foldable with respect to one another; the first cushion block is rotatably connected to the second U-shaped cushion. 
     
     
         3 . The folding sofa of  claim 2 , wherein at least two first zippers are arranged between the first cushion block and the second U-shaped cushion; said at least two first zippers are disposed between right sides of the first cushion block and the second U-shaped cushion and/or between left sides of the first cushion block and the second U-shaped cushion, and also between a side of the second U-shaped cushion opposite to the open end of the second U-shaped cushion and a corresponding side of the first cushion block. 
     
     
         4 . The folding sofa of  claim 3 , wherein a second zipper is arranged between the first U-shaped cushion and the second U-shaped cushion.