| 摘要 |
PROBLEM TO BE SOLVED: To provide a wheel of a carriage having excellent durability, allowing reduction in wear and noises to be able to withstand practical use, and capable of coping with replacement of the worn wheel without stopping a system. SOLUTION: At least the tread of the wheel 1 installed on the lower surface of the carriage 3 and running according to the movement of the carriage 3 is formed as a sliding surface. Since the tread of the wheel 1 is formed as the sliding surface with a low coefficient of friction, the noises generated when the direction of the wheel 1 is changed can be reduced. In addition, the wear of the wheel 1 can also be suppressed, cracking is prevented from developing in the tread, and the durability thereof can be remarkably increased. COPYRIGHT: (C)2005,JPO&NCIPI
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