Patent ID: 8366340

Claim:
A structural member joint structure configured to join a first pillar and a second pillar to each other when said second pillar is vertically abutted against a side face of said first pillar, the structural member joint structure comprising: a nut mechanism positioned inside of said second pillar and also positioned between a pair of fastening members; a bolt operated from an outside through an opening formed in said second pillar to be engaged with said nut mechanism; and a pair of intermediate forcing members positioned inside of said second pillar and also positioned between said pair of fastening members, wherein said nut mechanism comprises: said pair of fastening members positioned inside of said second pillar and arranged so as to be movable in a widthwise direction of a groove formed in the side face of said first pillar, said pair of intermediate forcing members respectively including taper surfaces, said taper surfaces facing a pair of taper surfaces of each of said pair of fastening members, and also including a second taper surface so as to be facing each other oppositely; and a nut positioned between said pair of intermediate forcing members, and including a pair of taper surfaces respectively facing said second taper surface of each of said pair of intermediate forcing members, wherein a rotation of said bolt causes said nut mechanism to force said pair of intermediate forcing members to move in a direction in which said pair of intermediate forcing members is separated from each other and to force said pair of fastening members in a direction in which said pair of fastening members is separated from each other, whereby engage projections, respectively arranged on ends of said pair of fastening members, move to be engaged with engagement recesses respectively arranged at widthwise opposite ends of said groove in said first pillar, to join said first pillar and said second pillar to each other, wherein said nut moves closer to said bolt by engagement of said bolt with said nut, whereby a force is applied to said pair of intermediate forcing members to move in the direction in which said pair of intermediate forcing members is separated from each other through an interaction between said taper surfaces of said nut and said taper surfaces of said pair of intermediate forcing members, and wherein said movement of said pair of intermediate forcing members in the direction to be separated from each other forces said pair of fastening members to move in the direction in which said pair of fastening members is separated from each other through said interaction between said taper surfaces of said pair of intermediate forcing members and said taper surfaces of said pair of fastening members.