| 摘要 |
The present invention is to provide a wheel construction having a simple and an economical configuration as well as highly utilization value with compacted configuration and having a characteristics in which it can easily climb over an obstacles including a step portion or a projected portion each having a predetermined height with the simple configuration and with a simple operation so that it can climb over such obstacles by a manual operation of the user thereof, and a wheel construction of the present invention comprising a wheel supporting portion, a wheel axis, a vehicle body portion, a vehicle body connecting portion, a sliding member provided on a lower edge portion of the wheel supporting and a resilient member and wherein it further comprising a wear preventing member which can prevent an outer surface of the sliding member from being worn away and which being provided on at least a portion of an outer surface of the sliding member forming the curved contour and facing to the moving surface.
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