| 摘要 |
PROBLEM TO BE SOLVED: To provide a coupling joint as assembling means for mutually coupling resin-coated steel pipes for lightweight structures, simple steel pipes or pipe materials for lightweight structures formed of aluminium, synthetic resin, or other material, and further rod materials for lightweight structures, and a pipe material structure formed by coupling two or more types of pipe material structures to each other.SOLUTION: The coupling joint comprises: a main member 31 including two halved-shape recessed grooves 311 and 312 for holding two mutually-facing pipe materials 10 and 20 of two pipe material structures 1 and 2; a sub member 32 including a halved-shape recessed groove 321 that complements only one recessed groove 312 of the main member 31, into a cylindrical shape; and a third member 33 including a halved-shape recessed groove 331 that complements a remaining recessed groove 311 of the main member 31, into the cylindrical shape.SELECTED DRAWING: Figure 2 |
