| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure capable of being compactly housed in a living room at unused time and easily carried, housed and stored in a house. SOLUTION: A column part support part is provided with auxiliary wheels 13, 13 for moving a base frame 8 when pulling out an auxiliary leg 9 to the vicinity of an opening part in auxiliary leg support parts 8a, 8a. A first wheel 10 and a second wheel 14 are movably grounded on a floor surface in a state (a using state) of installing the auxiliary leg 9 on the base frame 8, and in this case, the auxiliary wheels 13 are arranged so as not to be grounded. |
