| 摘要 |
PROBLEM TO BE SOLVED: To prevent appearance quality from being impaired even if an adjustment amount is large, and to reduce an environmental load.SOLUTION: In a step alleviation member 10 which is arranged so that an upper part of a lower frame F2 is protruded from a floor face FS, and alleviates a step between the lower frame F2 and a floor by forming an approach face which is inclined so as to be gradually lowered toward the floor face FS from an upper face of the lower frame F2, the step alleviation member comprises a reference body 11 which is inclined so that an upper face thereof becomes gradually lower from a base end edge toward a tip edge, and laminated bodies 12 and 13 which are laminated on the upper face of the reference body 11, and constituted so that plate thicknesses of portions 12b and 13b which are laminated on the reference body 11 become gradually thinner from the base end edge of the reference body 11 toward the tip edge. Upper faces of the laminated bodies 12 and 13 or the upper face of the reference body 11 is made to be the approach face. |
