Assembled and multi-functional chair

Abstract

A chair capable of stacking like a ladder is disclosed. The legs of the chair are alternatively arranged. The inner lateral sides of the chair have longitudinal supporting protrusion so that one chair may stack upon another chair by the supporting protrusion. Buckling devices are used to transversally connect chairs so as to be formed with a ladder shape chair frame.

What is claimed is:  
     
         1 . A chair capable of stacking like a ladder comprising a chair surface, a plurality of legs, a longitudinal supporting protrusion provided at an inner lateral sides of at least two legs of the chair, a plurality of concave portions the number of which is with respect to that of said longitudinal supporting protrusions, installed with at an outer periphery of the chair surface of said chair; said longitudinal supporting protrusions being resisted against another chair surface so that a plurality of chairs are arranged in longitudinal series so as to be formed with a ladder forming by a plurality of chairs.  
     
     
         2 . The chair as claimed in  claim 1 , wherein outer sides of bottoms of at least two legs of said chair are installed with respective buckling devices for being connected transversally to another chair to be formed as a ladder shape connection.  
     
     
         3 . The chair as claimed in  claim 2 , wherein said buckling device has a teeth structure, two adjacent buckling devices have teeth which are alternatively arranged.  
     
     
         4 . The chair as claimed in  claim 1 , wherein the longitudinal supporting protrusion of a first chair passes through the concave portion of a second chair so that as said chairs are not used, which are stacked.  
     
     
         5 . The chair as claimed in  claim 1 , wherein a reinforce ring is provided between two legs in connection with two chair legs at the positions near the bottom of the longitudinal supporting protrusions.