| 摘要 |
PROBLEM TO BE SOLVED: To provide a shelf with a simple configuration at low cost, the shelf forming a mounting surface of shelf plates by rotatably supporting a number of roll pipes between a pair of opposed long sides at constant pitches, by using circumferential frames of the shelf plates welding top and bottom bend parts of reinforcing metal wire materials bent in a waveform between metal wire materials of upper and lower parts.SOLUTION: Circumferential frames 10 of shelf plates 2 with mounting parts 4 to struts 1 provided at four corners are constituted by disposing a reinforcing metal wire material 13 bent in a waveform between metal wire materials 11, 12 of upper and lower parts at constant pitches, and by welding and fixing the bend part 13a, respectively. Support shafts 16 are held by triangle-shaped spaces 15 formed between one of the metal wire materials of the upper and lower parts in the opposed position of a pair of opposed sides of the circumferential frames and the inside of the bend part of the reinforcing metal wire materials, and roll pipes 18 are rotatably supported in the support shafts between the opposed positions of the opposed sides, thereby forming the mounting surface of the shelf plates by the line of the roll pipes. |
