Disclosed are adjustable supports, bedding support assemblies, and foldable bed frames having adjustable supports, bedding support assemblies or both. A foldable bed frame includes first and second sub-frames, first and second leg assemblies, and one or more bedding support assemblies to support a bed cloth. First and second sub-frames are pivotally connected to each other at their proximal sides. First and second leg assemblies are pivotally connected with the first and second sub-frames, respectively. A bedding support assembly includes a bedding support, and one or more linking mechanisms to pivotally connect the bedding support with a sub-frame, a leg assembly or both. The bedding support assembly folds and unfolds along with the sub-frame and the leg assembly.

An adjustable bed frame structure includes a bed frame and bed legs. The bed frame includes a left side rod and a right side rod. A head support rod, a middle support rod and a tail support rod are connected between the left side rod and the right side rod. The head support rod, the middle support rod and the tail support rod each include a left support rod and a right support rod. The left support rod and the right support rod each have a plurality of adjustment holes. The bed legs include side legs and middle legs. Each of the middle legs has a locking portion at a top thereof to mate with the adjustment holes of the left support rod and the right support rod. The width of the bed frame can be adjusted as desired.

A bed frame includes a frame, bed legs, and a bed plank support frame. The frame includes two side boards, a head board, and a tail board. Respective bottoms of opposing sides of the two side boards are provided with a plurality of U-shaped connecting members, respectively. The bed plank support frame includes a plurality of support members. Two ends of each support member are connected to U-shaped connecting grooves of the corresponding U-shaped connecting members of the two side boards, respectively. The bed plank support frame is sunk when in use. After a bed plank is placed, there is a certain distance between the bed plank and the top of the frame, so that the frame can form four stop sides. After a mattress is placed on the bed frame, the mattress is restrained in the frame, not sliding.

A spring bed with quick assembly and disassembly includes two cross bars, a plurality of vertical bars, a plurality of springs, and a plurality of fixing bases. The two cross bars and the vertical bars are parallel arranged with spacing. The two ends of the vertical bars are detachably assembled to the two cross bars. Each vertical bar is disposed with a plurality of fixing bases. The springs are detachably assembled to the fixing bases. Two ends of the vertical bar are detachably connected to the two cross bars.

A foldable bed, comprising a foldable rectangular frame having first and second frame portions, and having a hinged middle structure therebetween including first and second middle feet on opposite ends thereof disposed between and hingedly connected to the first and second frame portions. A plurality of supporting feet are removably connected to the underside of the frame portions near the outer corners thereof. First and second fixed sub-body portions are disposed the first and second frame portions, respectively, and first and second main body portions are disposed on the first and second frame portions, respectively, and are hingedly connected to the first and second fixed sub-body portions, respectively. The bed further comprises at least one articulable sub-body portion. The overall length of the foldable bed is no more than 215 cm and the overall width is no more than 158 cm.

A sliding mattress accessory is used with an existing mattress support system coupled to an RV slide-out. The accessory includes a secondary deck with a fixed head section, a long deck section and a hinge. The system also includes two long sliding rails longitudinally aligned and mounted to the secondary deck's bottom surface and the primary deck's top surface used with the existing mattress support system. The system includes at least one support mounted on the top surface of the primary deck that supports the fixed head section. The two sliding rails and the fixed support are the same height so the entire secondary deck is elevated approximately 3 inches above the primary deck. A lock mechanism prevents the secondary deck from moving longitudinally over the primary deck. When assembled, the secondary platform is aligned and registered over the primary deck, and a mattress is placed over the secondary deck.

Disclosed are adjustable supports, bedding support assemblies, and foldable bed frames having adjustable supports, bedding support assemblies or both. A foldable bed frame includes first and second sub-frames, first and second leg assemblies, and a plurality of adjustable supports. First and second sub-frames are pivotally connected with each other at their proximal sides. First and second leg assemblies are pivotally connected with the first and second sub-frames, respectively. Each adjustable support has one end connected to a sub-frame, and the other end connected to a leg assembly. An adjustable support includes movably coupled inner and outer bars, and a locking and unlocking mechanism to selectively restrict the inner and outer tubular bars from moving with respect to each other and thus selectively restrict the leg assembly from rotating with respect to the sub-frame.

Disclosed are adjustable supports and foldable bed frames. An adjustable support includes inner and outer tubular bars movably coupled to each other. A locking mechanism is disposed in the inner tubular bar and includes a positioning piece to restrict the inner and outer tubular bars from moving with respect to each other. An unlocking mechanism is fixedly coupled to the outer tubular bar and includes a push button to unlock the locking mechanism.

A bed can include one or more connectors for connecting components of the bed. For example, a frame can include a fastening mechanism for releasably connecting a cross-member to a longitudinal support. Another example includes connectors for connecting and aligning a foundation with a frame.

Disclosed are supporting leg assemblies and foldable bed frames. A supporting leg assembly includes a lateral bar, left and right legs, and left and right supporting pieces. The left and right legs are disposed under the left and right ends of the lateral bar, respectively. The left supporting piece is in contact with left sides of the left end of the lateral bar and the upper end of the left leg, and is fixedly coupled to the lateral bar and the left leg. The right supporting piece is in contact with right sides of the right end of the lateral bar and the upper end of the right leg, and is fixedly coupled to the first lateral bar and the right leg. The left and right supporting pieces are configured to connect and support sub-frames of a fold bed frame.