Inflatable sofa

Abstract

An inflatable sofa including a first inflatable sheath, a second inflatable sheath, a hose, an injection valve, a leaking valve and a pump is provided. The first inflatable sheath has a first pressure, and the second inflatable sheath disposed in the first inflatable sheath has a second pressure, in which the second pressure is less than the first pressure. The hose is connected between the pump and the second inflatable sheath, and the injection valve is disposed on the second inflatable sheath and located in the first inflatable sheath. The leaking valve is disposed on the first inflatable sheath and used to leak gas within the first inflatable sheath to outside of the inflatable sofa.

What is claimed is: 
     
         1 . An inflatable sofa, comprising:
 a first inflatable sheath having a first pressure;   a second inflatable sheath having a second pressure, disposed in the first inflatable sheath, wherein the first pressure is less than the second pressure;   a hose communicated with the second inflatable sheath;   an injection valve disposed on the second inflatable sheath and located in the first inflatable sheath;   a leaking valve disposed on the first inflatable sheath, used to leak gas within the first inflatable sheath to outside of the inflatable sofa; and   a pump, the hose is connected between the pump and the second inflatable sheath.   
     
     
         2 . The inflatable sofa of  claim 1 , further comprising a plurality of pulling strips disposed on the first inflatable sheath, used to separate an inner space of the first inflatable sheath into a plurality of gas channels connecting through each other. 
     
     
         3 . The inflatable sofa of  claim 1 , further comprising a backrest portion, a support portion and a seat portion, the backrest portion is connected to the seat portion and surrounded the support portion, wherein the backrest portion and the support portion are corresponding to the first inflatable sheath, and the seat portion is corresponding to the second inflatable sheath. 
     
     
         4 . The inflatable sofa of  claim 3 , wherein the first inflatable sheath further comprises a storage portion located below the support portion, and the pump and the hose are accommodated in the storage portion. 
     
     
         5 . The inflatable sofa of  claim 1 , further comprising an attach piece located on a bottom portion of the pump. 
     
     
         6 . The inflatable sofa of  claim 1 , further comprising an air tap, disposed on a bottom portion of the second inflatable sheath.