| 摘要 |
A lengthways insertion piece fixed to one end of the first bamboo tube (1) is releasably indirectly joined to the second bamboo tube (2) by a screw (4) and/or arranged centrally and lengthways in the first tube carrying the insert. The insert is glued and/or forcibly joined to the inside of the tube using a cross dowel (5). A crossways insert (15) is fixed to the second tube by screws (7) and/or by adhesive at a point aligned with the first tube insert. The connector is positively joined to the insert in tube by a cross dowel so the connector reaches into the second tube and is forcibly joined to the inside of the tube by a second dowel. The head (4a) of screw bears on the far endface of the insert and the screw nut (6) bears on the cross insert (19) endface furthest from the tube. The screw runs free through the insert bore (9) and is externally threaded (12) at its free end, the nut being screwed to the insert by locknuts (8). The insert is built up of connected bamboo rods. |
