| 摘要 |
A foldable frame assembly for a children's playpen, including an upper foldable rail mechanism composed of four upper rails each of which is foldable at a joint thereof, and a lower foldable rail mechanism composed of a chassis seat and four lower rails pivotally connected therewith in a radial pattern, wherein the upper rail mechanism is formed by simple components while the lower rail mechanism is provided with support-enhancing members to insure the safety in use.
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