| 摘要 |
The structure has two lateral racks of which the upper ends can be mutually connected by using a top transverse rod which is optionally of a fixed or movable type, and a swing chair having swayable connecting members on its upper end to connect the top transverse rod pivotally; a front end of each rack is curved and extends down and frontwards at an area nearly of a middle point of it; the top of the front foot can be fixedly connected to the top transverse rod, while the bottom of the front foot can be put on the ground in an assembled state; a shorter rear foot of the rack is curved and extends down and rearwards, its top pivotally and movably connects the front foot at an area nearly of the middle point of the latter; a movable positioning piece is provided between the front and the rear feet, one end of the movable positioning piece pivotally and movably connects an area near the bottom of one of the two feet, while the other end is movably slipped over and positioned on the other foot.
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