| 摘要 |
PROBLEM TO BE SOLVED: To provide a cart whose frame can be easily disassembled, then reassembled by inserting the tray-receiving pipes of the support structure into grooves formed inside curled extensions at the ends of the rectangular trays. SOLUTION: The rims 31 at the opposite ends of trays extend first outward, then downward towards the bottom of the tray, and then inward toward the tray in a curl 32, so that a groove 33 is formed under the rim 31. At corner sections at both ends of range Q, the section of the rim that curves downward toward the bottom of the tray gradually diminishes to nothing on moving from either end toward the center. Accordingly, within the range P, the thickness is only that of the rim 31. The rims of the rectangular trays 3 are rounded at the corners so that the trays 3 can be turned within the frame, which consists of four supports, and the rounded rims make contact with the four supports.
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