| 摘要 |
PROBLEM TO BE SOLVED: To provide an expansion type tent device capable of rising and falling on an inclined ground having an angle, for example,±10 deg. or less. SOLUTION: The lower end fulcrum 23 of crossbars 21 and 22 is set concentric to the traveling wheel 13 of a frame. In the nodal point 24 of the crossing crossbars 21 and 22, a pin is fixed to one bar 21, and the other bar 22 comprises an elliptic hole 51 allowing the sliding movement of the pin, so that adjacent frames 10a and 10b are moved in nonparallel.
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