| 摘要 |
A playpen includes a looped upper frame disposed above and spaced apart from a looped lower frame in a vertical direction. A plurality of vertical post units bridge the upper and lower frames. A cot has a bottom wall and a surrounding wall that is connected to a periphery of the bottom wall and that extends upwardly from the bottom wall. The surrounding wall has a length in the vertical direction which is shorter than a distance between the upper and lower frames in the vertical direction. The surrounding wall further has a distal top portion formed with a plurality of outwardly folded sections that engage removably the upper frame for suspending the cot thereon such that the bottom wall is disposed above the lower frame. A releasable fastening unit includes a plurality of complementary male and female fastener sets secured on the outwardly folded sections in such a manner that each adjacent pair of fasteners of the male and female fastener sets extends into a respective one of the notches, thereby confining the post units in the notches, respectively.
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