| 摘要 |
A frame assembly device includes a plurality of supporting tubes, a plurality of annular grooves, a plurality of inner liners, at least one the frame assembly, and at least one board. The external circle ring of the inner liner is formed as a tapered shape. A cambered convex portion is installed in a specific position of the internal circle ring of the inner liner. Besides, the inner liner is sheathed on the external circle ring of the supporting tube so that the cambered convex portion is positioned in the annular groove. The frame assembly has a plurality of connecting units and hollow connecting tubes. The relative sides of the external circle ring of the board have respectively a cambered concave portion. Besides, the boards are installed in the frame assemblies so that each cambered concave portion is capable of covering on the external circle ring of each hollow connecting tube.
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