Patent ID: 9579589
Date: 2017-02-28
CPC Classifications: A63H

Claim:
1. A block assembly comprising: a plurality of first-rods, each first-rod having a first cross sectional area, wherein each first-rod is solid or hollow; a plurality of second-rods, each second-rod having a second cross sectional area larger than the first cross sectional area, wherein each second-rod is solid or hollow; a plurality of H shaped beams, each having a H shaped cross section; and at least one of first to fourth unit blocks; wherein the first unit block includes: a first hexahedral body having first to sixth side faces; a first H shaped beam receiving groove defined in the first body from the first side face to receive the H shaped beam; a first main protrusion protruding from the second side face opposite the first side face to be selectively coupled to the first-rod and second-rod; and at least one of multiple first secondary protrusions protruding from the third to sixth side faces of the first hexahedral body respectively to be selectively coupled to the first-rod and second-rod, wherein the second unit block includes: a second hexahedral body having first to sixth side faces; a second H shaped beam receiving groove defined in the second body from the first side face to receive the H shaped beam therein; a second main protrusion extending from the second side face opposite the first side face to be selectively coupled to the first-rod and second-rod; and at least one of multiple second secondary protrusions extending from the third to sixth side faces respectively to be coupled to the H shaped beam, wherein the third unit block includes: a third hexahedral body having first to sixth side faces; a third H shaped beam receiving groove formed in the third hexahedral body from the first side face to receive the H shaped beam; a third main protrusion extending from the second side face opposite the first side face to be selectively coupled to the first-rod and second-rod; at least one of multiple third secondary protrusions extending from the third to fifth side faces respectively to be selectively coupled to the first-rod and second-rod; and a third H shaped beam coupling protrusion extending from the sixth face to be coupled to the H shaped beam, wherein the fourth unit block includes: a fourth hexahedral body having first to sixth side faces; a fourth H shaped beam receiving groove formed in the fourth body from the first side face to receive the H shaped beam; a fourth main protrusion extending from the second side face opposite the first side, wherein the fourth main protrusion has a fourth H shaped beam receiving groove defined therein; and at least one of multiple fourth secondary protrusions extending from the third to sixth side faces respectively to be coupled to the H shaped beam.