Patent ID: 9661938
Date: 2017-05-30
CPC Classifications: A47D

Claim:
1. A foldable frame assembly for a playpen, comprising a plurality of pillars, an upper collapsible frame pivoted to an upper end of each of the plurality of pillars and a collapsible bottom frame pivoted to a lower end of each of the plurality of pillars; the foldable frame assembly can be kept in a use configuration by locking the collapsible bottom frame, and can be converted to a folded configuration by unlocking the collapsible bottom frame; and wherein said collapsible bottom frame comprises: a central support mount for contacting a ground surface when the foldable frame assembly is in the use configuration; a plurality of linking elements, each of the plurality of linking elements having a first end pivotally connected to the central support mount and a second end pivotally connected to the lower end of one of the plurality of pillars respectively; a plurality of sliding parts slidingly mounted on the plurality of linking elements respectively and each of the sliding parts including a tubular body having a first end and a second end movable along the plurality of linking elements respectively; a plurality of first linking rods, each of the plurality of first linking rods having a first end pivotally attached to the lower end of one of the plurality of pillars and a second end pivotally attached to the first end of one of the plurality of sliding parts respectively for pivoting between the plurality of sliding parts and the lower end of each of the plurality of pillars respectively; and a plurality of second linking rods, each of the plurality of second linking rods having a first end pivotally attached to the second end of one of the plurality of sliding parts and a second end pivotally attached to the central support mount for pivoting between the plurality of sliding parts and the central support mount respectively.