Building block

Abstract

A building block includes a cube, five of six sides of which is respectively provided with four through holes while the sixth side is diagonally symmetrically provided with two projections and two through holes. The building blocks may be connected to one another in many different manners to create various shapes, and could be conveniently stored in a closed container and produced at reduced cost.

1 . A building block comprising a cube, five of six sides of said cube being provided with four through holes while the sixth side of said cube being diagonally symmetrically provided with two projections and two through holes.  
   
   
       2 . The building block as claimed in  claim 1 , wherein said projections on said cube are round-sectioned.  
   
   
       3 . The building block as claimed in  claim 1 , wherein said through holes on said cube may be round-sectioned or square-sectioned.  
   
   
       4 . A building block comprising a cube, five of six sides of said cube being provided with four through holes while the sixth side of said cube being diagonally symmetrically provided with two projections and two through holes, so that a cross-shaped central zone and a squared frame zone are formed on each side of said cube at areas other than said through holes; and said cross-shaped central zone has a width twice as wide as that of said frame zone.  
   
   
       5 . The building block as claimed in  claim 4 , wherein said projections on said cube are round-sectioned.  
   
   
       6 . The building block as claimed in  claim 4 , wherein said through holes on said cube may be round-sectioned or square-sectioned.