| 摘要 |
PURPOSE: To provide an expansion scaffolding board that is capable of being expanded and contracted smoothly and built economically with a less number of component parts. CONSTITUTION: An expansion scaffolding board is composed of scaffolding board half bodies 11 and 12 that are combined so that they can be expanded and contracted freely. Each of the half bodies is constructed of a plurality of long square cylindrical members 13, 14 arranged at intervals in parallel with one another, a fixing member that fixes the end on one side of the square cylindrical members 13 14, and a fixing/guiding member 17 that fixes respectively the ends on the other side of the square cylindrical members 14, 13 of the opposite half bodies 12, 11. The guiding member 17 is formed in a square cylindrical shape having a plurality of sections 21, 22 partitioned with partition walls 17d. End of each of the square cylindrical members 13 of the half body 11 is inserted for fixation into alternate one of the sections 21 of the guiding member 17 of each of the half bodies 11, 12. The part of each of the square cylindrical members 14 on the guiding member side of the opposite half body 12 is movably inserted into each of the remaining sections 22. |
