A bed frame includes legs, bars and wooden slats. Each leg has first and second sides that meet each other at an edge. A first slot is disposed on the first side adjacent to the edge, and a second slot is disposed on the second side adjacent to the edge. Each bar has two wedge inserts. A first wedge on a lateral bar fits into the first slot, and a second wedge on a longitudinal bar fits into the second slot. The lateral bar is perpendicular to the leg while the first wedge is lodged in the first slot, and the longitudinal bar is perpendicular to the leg while the second wedge is lodged in the second slot. The first slot and the second slot are disposed between the lateral bar and the longitudinal bar while the first and second wedge inserts are lodged in the first and second slots.

A bed frame includes legs, bars and wooden slats. Each leg has first and second sides that meet each other at an edge. A first slot is disposed on the first side adjacent to the edge, and a second slot is disposed on the second side adjacent to the edge. Each bar has two wedge inserts. A first wedge on a lateral bar fits into the first slot, and a second wedge on a longitudinal bar fits into the second slot. The lateral bar is perpendicular to the leg while the first wedge is lodged in the first slot, and the longitudinal bar is perpendicular to the leg while the second wedge is lodged in the second slot. The first slot and the second slot are disposed between the lateral bar and the longitudinal bar while the first and second wedge inserts are lodged in the first and second slots.

System for convertible bunk beds comprising a base frame (11); an upper frame (21) of such dimensions that it can house a first mattress (211), movable between a first position in which the same is lowered and the system is in sofa configuration and a second position, substantially on the vertical of said first position, in which said upper frame (21) is lifted and the system is in bunk bed configuration; a third frame (25) of such dimensions that it can house a second mattress (251), constrained so that it is comprised between said base frame (11) and said upper frame (21), characterized in that the constraint of said upper frame (21) to said base frame (11) occurs by means of a kinematics with double four-bar linkage which allows to move said upper frame (21) while keeping it constantly in horizontal position.

A connection piece includes a connection rod and a buckle. An end of the connection rod is bent to form a hem, and a through hole is provided in the hem. A through groove is provided in the buckle, and an inner wall of the through groove is provided thereon with a block protrusion corresponding to the through hole. The connection rod and the block protrusion are tightly fastened and fixed into the buckle via the through hole. A bedframe includes the connection piece.

A structure for connecting a post and a beam of a bunk bed includes a support tube located above the beam. A connection tube is located below the beam. An end portion of the beam is provided with an insertion connection portion connecting the support tube and the connection tube. The insertion connection portion and the support tube have a pair of slanted surfaces disposed opposite to each other. When the support tube and the insertion connection portion are connected by insertion, the slanted surface of the insertion connection portion tightly fits the slanted surface of the support tube. The insertion connection portion and the connection tube have a pair of slanted surfaces disposed opposite to each other. When the connection tube and the insertion connection portion are connected by insertion, the slanted surface of the insertion connection portion tightly fits the slanted surface of the connection tube.

A structure for connecting a post and a beam of a bunk bed includes a support tube located above the beam. A connection tube is located below the beam. An end portion of the beam is provided with an insertion connection portion connecting the support tube and the connection tube. The insertion connection portion and the support tube have a pair of slanted surfaces disposed opposite to each other. When the support tube and the insertion connection portion are connected by insertion, the slanted surface of the insertion connection portion tightly fits the slanted surface of the support tube. The insertion connection portion and the connection tube have a pair of slanted surfaces disposed opposite to each other. When the connection tube and the insertion connection portion are connected by insertion, the slanted surface of the insertion connection portion tightly fits the slanted surface of the connection tube.

The present invention relates to a bed or hammock which comprises four support legs delimiting two longitudinal sides between them, each one of which has longitudinal bars, and two transverse sides which are shorter in length than, and perpendicular to, the previously mentioned sides, a surface element made up of a fabric, mesh, canvas or similar material arranged between the support legs, wherein the legs are made up of a body which comprises lateral faces perpendicular to the side they delimit, respectively, outer faces parallel to the side they delimit, respectively, and an upper face, wherein each longitudinal and transverse bar is fastened to a pair of legs, respectively, by fastening means, and wherein the invention comprises a fastening and/or tensioning device for the surface element on at least one of the longitudinal sides and/or transverse sides.

A space saving bed of the kind that can be changed from a single bed into a double bed and vice versa and where performing this change between the single bed and double bed is easy, effortless, and does not require removal of a pad or mattress. The space saving bed includes a first frame part and a second frame part. The first frame part includes a first mattress receiving device and the second frame part includes a second mattress receiving device. The first and second frame parts are hingedly connected together about a first axis and are foldable relative to each other about the first axis. The second mattress receiving device is connected to the second frame part to be rotatable or pivotable about a second axis. The first and second axes are arranged parallel to one another.

A bed frame and cover that is capably joinable to another bed frame and cover and capably disjoinable from another bed frame and cover and of which comprises a mattress supporting plate which is capable of moving vertically within the cover. The cover is a unified structure of walls and a roof with pivotally connected doors that capably form an enclosure around the plate or of which are stowable on the roof. The entire cover is capable of 360 degree bi-directional rotation around the entire plate as well as vertical movement. A capably pivotable mattress attachment is stowable under the plate or extends to form a contiguous mattress surface of which is supported by rods that connect to another bed frame and cover. The bed frame and cover is capable of a multitude of configurations dependent on bed frame, mattress attachment and the cover's optional positioning.

A bed frame and cover that is capably joinable to another bed frame and cover and capably disjoinable from another bed frame and cover and of which comprises a mattress supporting plate which is capable of moving vertically within the cover. The cover is a unified structure of walls and a roof with pivotally connected doors that capably form an enclosure around the plate or of which are stowable on the roof. The entire cover is capable of 360 degree bi-directional rotation around the entire plate as well as vertical movement. A capably pivotable mattress attachment is stowable under the plate or extends to form a contiguous mattress surface of which is supported by rods that connect to another bed frame and cover. The bed frame and cover is capable of a multitude of configurations dependent on bed frame, mattress attachment and the cover's optional positioning.