Foldable bed frame

Abstract

A foldable bed frame includes a pair of generally rectangular shaped sub-frames foldably attached to each other so as to be folded in a collapsed condition and unfolded to an open condition for use as a mattress support. The foldable attachment is such that when the sub-frames are unfolded to the open condition, a generally central transverse support means is located at the interface thereof. A pair of support members is positioned beneath the transverse support means and in generally perpendicular relation thereto. The support members are attached to the sub-frames in supporting engagement with the transverse support means when the sub-frames are unfolded to the open condition to provide support to the pair of sub-frames at the interface thereof. The pair of support members is attached to the sub-frames so as to be drawn away from the transverse support means when the sub-frames are folded to the collapsed condition.

1 . A foldable bed frame, which comprises:
 a) at least a pair of generally rectangular shaped sub-frames foldably attached to each other so as to be folded in a collapsed condition and unfolded to an open condition for use as a mattress support, said foldable attachment being arranged and configured such that when said sub-frames are unfolded to the open condition, a generally central transverse support means is located at the interface thereof; and   b) a pair of laterally spaced apart support members positioned beneath said generally central transverse support means and in generally perpendicular relation thereto, said spaced apart support members attached to said sub-frames in a manner to be in supporting engagement with said generally central transverse support means when said sub-frames are unfolded to the open condition, to thereby provide support to said pair of sub-frames at the interface thereof, said pair of spaced apart support members each being attached to said sub-frames in a manner to be drawn away from said generally central transverse support means when said sub-frames are folded to the collapsed condition.   
     
     
         2 . The foldable bed frame according to  claim 1 , wherein each of said generally rectangular shaped sub-frames comprises a pair of substantially parallel, spaced apart side support members respectively having proximal and distal ends, said side support members are connected by lateral support members at a location between the proximal and distal ends of said side support members, and at a location at or near the distal ends, said lateral support members being shorter in length than said side support members. 
     
     
         3 . The foldable bed frame according to  claim 2 , wherein each of said generally rectangular shaped sub-frames further comprises a pair of spaced apart support legs having respective free ends, each of said support legs pivotally connected to said generally rectangular shaped sub-frame at or near the distal ends of said side supports, said support legs connected to each other by a lateral support member positioned between said rectangular shaped sub-frame and the free ends of said support legs, said support legs pivotal between a position substantially parallel to said rectangular shaped sub-frame and a position generally perpendicular thereto. 
     
     
         4 . The foldable bed frame according to  claim 3 , wherein each of said pair of laterally spaced apart support members are connected to each said sub-frame by a pair of angled supporting braces having a first end and a second end, said first ends of said supporting braces pivotally connected to said laterally spaced apart support members, said second ends of said supporting braces pivotally connected to said respective sub-frame. 
     
     
         5 . The foldable bed frame according to  claim 4 , wherein said generally transverse support means is a pivotal lateral support member commonly joining the proximal ends of said side supports of each of said sub-frames to permit said sub-frames to be folded with respect to each other. 
     
     
         6 . The foldable bed frame according to  claim 5 , wherein each of said support legs are connected to said generally rectangular shaped sub-frame by a brace member, said brace member pivotally connected to said generally rectangular shaped sub-frame on one end and slidably connected to said support legs at another end such that said support legs are movable from the position generally perpendicular to said generally rectangular shaped sub-frame to the position generally parallel to said generally rectangular shaped sub-frame. 
     
     
         7 . The foldable bed frame according to  claim 1 , further comprising rolling means. 
     
     
         8 . The foldable bed frame according to  claim 4 , further comprising a lateral support member at or near the proximal end of each of said sub-frames. 
     
     
         9 . The foldable bed frame according to  claim 8 , wherein said lateral support members located at or near the proximal ends of the sub-frames move toward each other to be engaged in adjacent relation to form said transverse support means when said sub-frames are in the open condition. 
     
     
         10 . The foldable bed frame of  claim 2 , further comprising one or more fasteners coupled to at least one side support member, said fasteners being configured to retain a side member of an adjacent foldable bed frame thereto. 
     
     
         11 . A foldable bed frame, which comprises:
 a) at least a pair of sub-frames, each said sub-frame being constructed of a plurality of elongated members respectively connected to form a generally rectangular shaped section, each said generally rectangular shaped section being pivotally connected to the other by a generally central transverse pivotal support member, said generally rectangular shaped sections being pivotal between an open generally co-planar position for use as a mattress support, and a folded position, whereby said generally rectangular shaped sections are in face-to-face relation;   b) a pair of support legs respectively pivotally connected to each said generally rectangular shaped sections at the free end thereof and foldable from a position generally parallel to the plane of each said respective generally rectangular shaped section, to a position generally perpendicular to each respective generally rectangular shaped section, said last mentioned position capable of supporting said generally rectangular shaped sections in a generally horizontal position for use as a mattress support; and   c) a pair of laterally spaced apart support members positioned beneath said generally central transverse pivotal support member and in generally perpendicular relation thereto, said spaced apart support members being in supporting engagement with said generally transverse pivotal support member when said pair of generally rectangular shaped sections are in said open condition to provide support to said pair of generally rectangular shaped sections at the pivotal connection thereof, said pair of laterally spaced apart support members each being respectively attached to said pair of generally rectangular shaped sections in a manner to be withdrawn away from said central transverse pivotal support member when said sub-frames are pivotally folded toward each other.   
     
     
         12 . The foldable bed frame of  claim 11 , wherein the plurality of elongated members of each sub-frame include a pair of opposing side members having an outer cross-member interconnected therebetween at a distal end, said central traverse pivotal support member being positioned at a proximal end of the opposing side members to form the generally rectangular shaped section. 
     
     
         13 . The foldable bed frame of  claim 12 , wherein the pair of support legs is respectively pivotally connected to each of the side members of said generally rectangular shaped sections. 
     
     
         14 . The foldable bed frame of  claim 12 , wherein each support leg is pivotally connected to a side member by a pair of angled supporting braces. 
     
     
         15 . The foldable bed frame of  claim 14 , wherein the each of the pair of angled supporting braces includes a stopper member extending proximate the pivotal connection to align the support leg with the central traverse pivotal support member. 
     
     
         16 . The foldable bed frame of  claim 11 , wherein each support leg is pivotally connected to a side member by a pair of angled supporting braces. 
     
     
         17 . A foldable bed frame, which comprises:
 a) at least a pair of sub-frames, each sub-frame including a plurality of elongated members respectively connected to form a generally rectangular shaped section, each said rectangular shaped section being foldably attached to the other so as to be folded to a collapsed condition and unfolded to an open co-planar condition for use as a mattress support;   b) each said generally rectangular shaped section having at least one side member adjacent to a corresponding side member of the other generally rectangular shaped section, such that when said generally rectangular shaped sections are unfolded to said open condition, said correspondingly adjacent side members engage each other in contacting relation to form a generally central transverse support structure;   c) a pair of laterally spaced apart support members positioned beneath said generally central transverse support structure and in generally perpendicular relation thereto, said spaced apart support members moved into supporting engagement with said generally central transverse support structure when said generally rectangular shaped sections are unfolded to said open condition to thereby provide support to said pair of generally rectangular shaped sections at the interface thereto, and said pair of laterally spaced apart support members being drawn away from said central transverse support structure when said generally rectangular shaped sections are folded to said collapsed condition.