An assembly structure for a bed column and a bed guard is provided. The bed guard comprises a lateral guardrail unit and a longitudinal guardrail unit. A side of the longitudinal guardrail unit comprises a longitudinal guardrail side pipe arranged vertically, and a bottom of the longitudinal guardrail side pipe is inserted into the bed column from top to bottom. A side of the lateral guardrail unit comprises a lateral guardrail frame edge arranged vertically and abutting the longitudinal guardrail side pipe and an upper part of the bed column. A lower position of the lateral guardrail frame edge is locked with an upper bolt and a lower bolt separated from each other in a vertical direction, and the upper bolt and the lower bolt enable the lateral guardrail frame edge, the bed column, and the longitudinal guardrail side pipe to be locked together.

A bed frame installation structure, having two bed posts spaced apart from each other and a bed support rod; a bottom of each end of the bed support rod is bent and warped into a hook piece, and a top side of which is formed with a locking plate; a locking hole and a hook hole are formed on each bed post corresponding to a corresponding end of the bed support rod; the hook piece is accommodated in a corresponding bed post to engage with a lower edge of the hook hole, and the locking plate is fixed to the locking hole by a screw. A bed frame structure is also disclosed having a bed surface frame and two bed frame installation structures spaced apart from each other; a bed side beam is provided between two corresponding bed posts of the two sets of the bed frame installation structure.

A bed frame installation structure, having two bed posts spaced apart from each other and a bed support rod; a bottom of each end of the bed support rod is bent and warped into a hook piece, and a top side of which is formed with a locking plate; a locking hole and a hook hole are formed on each bed post corresponding to a corresponding end of the bed support rod; the hook piece is accommodated in a corresponding bed post to engage with a lower edge of the hook hole, and the locking plate is fixed to the locking hole by a screw. A bed frame structure is also disclosed having a bed surface frame and two bed frame installation structures spaced apart from each other; a bed side beam is provided between two corresponding bed posts of the two sets of the bed frame installation structure.

Systems and methods for circulating air through a bed frame are provided. In one embodiment, a system may include a bed frame that defines an internal chamber. A first vent in the bed frame may be configured to receive air from outside the internal chamber to inside the internal chamber. A second vent in the bed frame may be configured to expel air from inside the internal chamber to outside the internal chamber. A fan disposed within the internal chamber between the first vent and the second vent may be configured to move air within the internal chamber from the first vent to the second vent.

Systems and methods for circulating air through a bed frame are provided. In one embodiment, a system may include a bed frame that defines an internal chamber. A first vent in the bed frame may be configured to receive air from outside the internal chamber to inside the internal chamber. A second vent in the bed frame may be configured to expel air from inside the internal chamber to outside the internal chamber. A fan disposed within the internal chamber between the first vent and the second vent may be configured to move air within the internal chamber from the first vent to the second vent.

An assembly structure for a bed column and a lateral bed rod is provided. The bed column is arranged vertically and comprises an upper column and a lower column. The lower column comprises a joint section. The upper column is sleeved on the joint section and is stopped at a positioning step formed at a bottom end of the joint section. The lateral bed rod is horizontally, laterally arranged. The lateral bed rod is connected with a locking piece adjacent to a side of the positioning step and abutting the upper column and the lower column. A first portion of the locking piece is locked with an upper bolt enabling the locking piece, the upper column, and the joint section to be locked together. A second portion of the locking piece is locked with a lower bolt enabling the locking piece and the lower column to be locked together.

A single folding sofa bedstead includes a bedstead frame body, a frame assembly, a first connecting rod assembly, a second connecting rod assembly, a first linkage rod group, and a second linkage rod group. The frame assembly has a first frame, a second frame, and a third frame. The first frame is pivotally connected to one side of the second frame, and the third frame is pivotally connected to the other side of the second frame. One end of the first connecting rod assembly is pivotally connected to the first frame, and the other end of the first connecting rod assembly is pivotally connected to the bedstead frame body. One end of the second connecting rod assembly is pivotally connected to the second frame, and the other end of the second connecting rod assembly is pivotally connected to the bedstead frame body.