| 摘要 |
PROBLEM TO BE SOLVED: To provide a connection joint for detachably bolt-connecting angular pipes to each other in an L- or T-shape when assembling and constructing shelf frames using the angular pipes. SOLUTION: The joint for connecting the angular pipes in a frontal T-shape comprises connection angularly cylindrical portions to be fitted into the angular pipes, protruded in a frontal T-shape ranging both rightward and leftward and upward from an angular cylindrical base bottom portion, and stepped abutting portions formed on both frontal sides of a connection portion between the angularly cylindrical base bottom portion and each connection angular cylindrical portion for receiving both side end faces of the angular pipes to be fitted to the connection angularly cylindrical portions. Hexagonal holes are opened in the connection angularly cylindrical portions in the frontal direction. Hexagonal nuts almost the same in shape are fitted to the hexagonal holes. Thus, the angular pipes are bolt-joined to the connection angularly cylindrical portions, respectively. COPYRIGHT: (C)2006,JPO&NCIPI
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