| 摘要 |
PROBLEM TO BE SOLVED: To obtain a rigid structure by the simple processing of a member, in a shelf device in which shelf plates which can be arranged by being vertically inverted are supported by pipe-made columnar supports.SOLUTION: An annular groove 11 is formed at an external peripheral face of a columnar support 2, and a bush 12 having an inward salient 16 is stacked on the columnar support 2 from the outside in a two-dividing system. An external periphery of the bush 12 is narrowed upwardly and tapered, and a cylinder body 5 welded to a shelf plate 1 is downwardly fit in a come-off impossible manner. The cylinder body 5 has a straight shape, and the cylinder body 5 and the bush 10 are held in a relative movement disabled state by making an inward annular protrusion 17 formed at a vertical intermediate part abut on the bush 10. By this constitution, a shelf device is excellent in rigidity. Since the cylinder body 5 is formed of a pipe as a raw material, dimension accuracy becomes high, and a vertical height relationship of the bush 10 can be constantly held. |
