Patent ID: 8393023

Claim:
A collapsible bed frame foldable between an expanded configuration and a collapsed configuration, the bed frame comprising two elongated rods ( 1 ) each comprising two connecting rods ( 11 ); the two connecting rods ( 11 ) being pivotally connected together through a connecting member ( 3 ), the two elongated rods ( 1 ) each having two outer ends and a central portion pivotally connected with an X-shaped support rack ( 2 ), respectively, the X-shaped support rack ( 2 ) at the central portion being attached to the connecting members ( 3 ) at a location between the connecting rods ( 11 ) and pivotable with respect to the connecting members ( 3 ); and the X-shaped support racks ( 2 ) at the outer ends of the elongated rods ( 1 ) characterized by: at least one single-piece support rod ( 4 ) having a proximal end and a distal end, the proximal end of the at least one single-piece support rod ( 4 ) fixedly pivotally attached to at least one of the elongated rods ( 1 ) and the distal end of the at least one single-piece support rod ( 4 ) pivotally connected to at least one of the X-shaped support racks ( 2 ) when the bed frame is in the expanded configuration and in the collapsed configuration.