Foldable frame

Abstract

A foldable frame includes: inverted U-shaped rods aligned in a folding direction, each inverted U-shaped rod having opposite first and second upright portions; and first and second connecting units. Each of the first connecting units interconnects the first upright portions of two adjacent ones of the inverted U-shaped rods. Each of the second connecting units interconnects the second upright portions of two adjacent ones of the inverted U-shaped rods. Each of the first and second connecting units includes two connecting rods that intersect and that are pivoted to each other, and that are respectively pivotable with respect to the respective ones of the first and second upright portions of two adjacent ones of the inverted U-shaped rods, and two sleeves respectively and slidably sleeved on the respective ones of the first and second upright portions of the two adjacent ones of the inverted U-shaped rods, and respectively pivoted to the connecting rods.

1 . A foldable frame for a tent comprising:
 a plurality of inverted U-shaped rods aligned in a folding direction, each of said inverted U-shaped rods having opposite first and second upright portions; and   a plurality of first and second connecting units, each of said first connecting units interconnecting said first upright portions of two adjacent ones of said inverted U-shaped rods, each of said second connecting units interconnecting said second upright portions of two adjacent ones of said inverted U-shaped rods, each of said first and second connecting units including a pair of connecting rods that intersect and that are pivoted to each other at an intersection therebetween and that are respectively pivotable with respect to the respective ones of said first and second upright portions of said two adjacent ones of said inverted U- shaped rods, and a pair of sleeves that are respectively and slidably sleeved on the respective ones of said first and second upright portions of said two adjacent ones of said inverted U-shaped rods, and that are respectively pivoted to said connecting rods.   
   
   
       2 . The foldable frame as claimed in  claim 1 , wherein at least one of said first and second upright portions of each of said inverted U-shaped rods is formed with a retaining hole, said foldable frame further comprising a positioning unit that includes at least one positioning pin that is insertable into said retaining hole so as to be disposed underneath and to abut against a respective one of said sleeves of a respective one of said first and second connecting units when said foldable frame is positioned at an extended state, thereby preventing downward sliding movement of the respective one of said sleeves on the respective one of said first and second upright portions of the respective one of said inverted U-shaped rods.