| 摘要 |
A junction member (1), characterised by comprising: an external form (2) that is polygonal in cross section and comprises external faces (4) of a polygon; adjacent corners (3) of the polygon defining respective external adjacent corners of each said external face, each of those corners constituting a respective tunnel (5) so that each said corner is a respective corner box section; and an internal form (6) that is polygonal in cross section and constitutes an internal box section, each said corner box section intersecting a respective corner (7) of said internal box section; and at least one said external face (4) comprises at least one slot (8) between respective said external adjacent corners, the base of the slot (8) being comprised by a respective face (9) of said internal form (6), said slot (8) being a substantially T-shape so that at least one suitable tenon may be inserted into at least one said slot (8), optionally permanently or releasably to interlock with said junction member (1). <IMAGE> |
