| 摘要 |
A tube system e.g. as cable conduit comprises a plurality of plastics tubes (1) joined together by integral spacers (2) formed as foil hinges so that the tube system can be wrapped about a centre-point (3) to form a bunch by elastically deforming the foil hinges, and the individual tubes (1) have integral core elements (4) which assemble into a stabilising core (5) in the wrapped bunch. The core elements (4) are preferably ridge-shaped in cross- section and hollow, so with the preferred four tubes (1) in the system the core elements (4) have a ridge angle of 90 DEG and their flanks (6) run tangentially into the associated tube walls (7). The core elements (4) may be slit or gapped transversely to facilitate bending. The core elements (4) may be bonded, welded or interlocked together e.g. by slits and headed members. An outer tape may be wrapped about the assembled tube system. The flanks (6) may be arcuate to accommodate a centre cable. <IMAGE> |
