| 摘要 |
PROBLEM TO BE SOLVED: To provide a wheel rail used when forming a shelf supporting a load so as to freely flow. SOLUTION: In the wheel rail, at wheel both side positions of right and left both side plate portions 5a, 5b of a rail main body 4 that is groove shape opening upward in cross section, a bearing recessed portion 28 formed by a U-shaped plate portion 30 projecting inward, and a slip-off preventive projecting portion 27 connecting to a lower side of the bearing recessed portion 28 are structured by projecting portions 26a, 26b formed by extruding both side place portions 5a, 5b inward. In a wheel 6, a shaft 21 that is not longer than a clearance between inner side surfaces of both side plate portions 5a, 5b is provided. Both end shaft portions 21b of the shaft 21 are loosely fitted in the bearing recessed portion 28, and the slip-off preventive portion 27 is loosely fitted in annular recessed portions 25a, 25b formed around shafts on both sides of the wheel. COPYRIGHT: (C)2005,JPO&NCIPI
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