| 摘要 |
A swivel mechanism for foldable furniture includes two disks and a rotatable assembly sandwiched in between. Each disk has a plurality of through holes each for receiving an elongated metal tube and jointly connecting the tube to the disk. The through hole has a side wall with a slanted concave surface. A bridge member having one side with a slanted concave surface is formed across the through hole. When the metal tube is held in a slanted open position, the slanted concave surfaces of the side wall and the bridge member are engaged with the tube to provide strong support and restrain movement.
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