Railing structure

Abstract

A railing structure has a railing pipe and at least one assembling block. The railing pipe is made of aluminum material and has two assembling face symmetrically adjacent to the two openings. The assembling block is made of a metal material having a hardness higher than that of aluminum. The assembling block is formed with a plate with two perpendicular side boards symmetrically disposed along two sides, each side board has a groove partially covered by a positioning tongue, and a free end of the positioning tongue faces toward the plate, each side board of the assembling block configured for being placed in a corresponding opening of the railing tube. The plate completely covers the opening, and the positioning tongue inserts under the assembling face, thereby achieving that the assembling block cannot be separated from the railing pipe in a non-destructive state.

What is claimed is: 
     
         1 . A railing structure comprising:
 a railing tube made from a material comprising aluminum, assembling faces inside the railing pipe adjacent to the openings;   at least one assembling block made of a metallic material having a hardness higher than a hardness of aluminum, the assembling block comprising a plate with two perpendicular side boards symmetrically disposed along two sides, each side board comprising a groove partially covered by a positioning tongue, a free end of the positioning tongue facing toward the plate, each side board of the assembling block configured for being placed in a corresponding opening of the railing tube.   
     
     
         2 . The railing structure as claimed in  claim 1 , wherein the two openings both have a rectangular shape and are connected. 
     
     
         3 . The railing structure as claimed in  claim 1 , wherein the railing pipe further comprises a plurality of screws. 
     
     
         4 . The railing structure as claimed in  claim 3 , wherein the railing pipe further comprises a plurality of through apertures for accepting the screws, and the railing pipe comprises an indentation around each through aperture. 
     
     
         5 . The railing structure as claimed in  claim 1 , wherein the assembling block is made of steel.