| 摘要 |
PROBLEM TO BE SOLVED: To provide a shelf structure that is simple in assembly and adjustment and is stable even when bracing bars are eliminated. SOLUTION: The shelf has a structure of coupling an expansion pipe 4 for a shelf and a support pipe 2 for supporting a horizontal shelf. An elliptical joint component 9 with a large contact area is inserted between the support pipe 2 and the expansion pipes 4 for a shelf. Then, a screw 7 is put through the support pipe 2 from a side opposite to the joint component 9 to threadedly engaged with the expansion pipe 4 for a shelf. COPYRIGHT: (C)2011,JPO&INPIT
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