A bed includes a bed frame and a backrest coupled with the bed frame by a plurality of connecting units, each including first and second plate. The first plate is fixedly disposed at a first side of the bed frame and includes one or more slots elongated in the lateral direction of the bed frame. The second plate includes one or more rows of holes, and is fixedly coupled with the first plate by at least one fastener through at least one slot of the first plate and at least one hole of the second plate. Each connecting unit also includes one or more locking nuts fixedly disposed at the second plate, and one or more locking bolts. The one or more locking bolts pass through one or more holes or slots formed in the backrest and fixedly coupled with the one or more locking nuts of the second plate.

A composed element, such as a piece of furniture, wherein the composed element comprises at least a rear wall, as well as a number of constructional parts forming a whole in which the rear wall has to be provided. The rear wall forms the rear side of the composed element and includes one or more rear wall parts. The composed element comprises seats for installing at least one of the rear wall parts, which are configured such that the rear wall part can be slid into the seats starting from the rear side of the composed element from a position differing from the final plane in which the rear wall part will be situated in the final condition.

A cabinet structure is provided. The cabinet structure includes two side frames, and at least one vertical sectional bar connecting the side frames via at least two frame elements. The frame elements include first and second frame elements. The first frame element includes a connecting face that has a frontal cavity and a plurality of guide elements. The second frame element includes a receiving face configured to receive the guide elements of the first frame element, and a through hole aligned with the frontal cavity of the first frame. The frame elements also include a securing element configured to be screwed into the frontal cavity via the through hole to forge a secure interlocking fitting of the first and second frame elements.

A cabinet structure is provided. The cabinet structure includes two side frames, and at least one vertical sectional bar connecting the side frames via at least two frame elements. The frame elements include first and second frame elements. The first frame element includes a connecting face that has a frontal cavity and a plurality of guide elements. The second frame element includes a receiving face configured to receive the guide elements of the first frame element, and a through hole aligned with the frontal cavity of the first frame. The frame elements also include a securing element configured to be screwed into the frontal cavity via the through hole to forge a secure interlocking fitting of the first and second frame elements.

A modular cabinet assembly has at least a first sub-cabinet and a second sub-cabinet. Each sub-cabinet includes a back board having at least two separate back board pieces that are pivotably connected to each other, a left side board pivotably connected to one of the at least two back board pieces, and a right side board pivotably connected to another of the at least two back board pieces. At least one shelf board having opposite ends is removably connected to the left side board and the right side board of either the first sub-cabinet or the second sub-cabinet. A first end board is connected to either an upper end of the first sub-cabinet or a lower end of the second sub-cabinet. A first connector removably connects the left side boards of the first and second sub-cabinets, and a second connector removably connects the right side boards of the first and second sub-cabinets.

A modular cabinet assembly has at least a first sub-cabinet and a second sub-cabinet. Each sub-cabinet includes a back board having at least two separate back board pieces that are pivotably connected to each other, a left side board pivotably connected to one of the at least two back board pieces, and a right side board pivotably connected to another of the at least two back board pieces. At least one shelf board having opposite ends is removably connected to the left side board and the right side board of either the first sub-cabinet or the second sub-cabinet. A first end board is connected to either an upper end of the first sub-cabinet or a lower end of the second sub-cabinet. A first connector removably connects the left side boards of the first and second sub-cabinets, and a second connector removably connects the right side boards of the first and second sub-cabinets.

A composed element, such as a piece of furniture, wherein the composed element comprises at least a rear wall, as well as a number of constructional parts forming a whole in which the rear wall has to be provided. The rear wall forms the rear side of the composed element and includes one or more rear wall parts. The composed element comprises seats for installing at least one of the rear wall parts, which are configured such that the rear wall part can be slid into the seats starting from the rear side of the composed element from a position differing from the final plane in which the rear wall part will be situated in the final condition.

The present disclosure provides systems and methods for assembling a device while maintaining the aesthetic appearance and structural integrity of a visible surface of the device. In one or more implementations of the invention, a system includes a first assembly piece with an assembly region that comprises an opening defined by first and second connecting elements. The system further includes a second assembly piece and a fastening assembly, where a portion of the second assembly piece is shaped to fit within the assembly region opening and the fastening assembly spans the first and second connecting elements to secure the first assembly piece to the second assembly piece, and tightening of the fastening assembly causes the second connecting element to deform, pressing a surface of the second assembly piece against an adjacent surface of the first connecting element and retaining a substantially even visible surface of the device.

The present disclosure provides systems and methods for assembling a device while maintaining the aesthetic appearance and structural integrity of a visible surface of the device. In one or more implementations of the invention, a system includes a first assembly piece with an assembly region that comprises an opening defined by first and second connecting elements. The system further includes a second assembly piece and a fastening assembly, where a portion of the second assembly piece is shaped to fit within the assembly region opening and the fastening assembly spans the first and second connecting elements to secure the first assembly piece to the second assembly piece, and tightening of the fastening assembly causes the second connecting element to deform, pressing a surface of the second assembly piece against an adjacent surface of the first connecting element and retaining a substantially even visible surface of the device.

The invention relates to a fastening system for connecting two frame elements of a bed frame, in particular for an adjustable bed, wherein the two frame elements each comprise a hollow profile, the fastening system comprising: a mounting element, which is firmly attachable to an end of the first frame element, and a connector part, which is insertable into the hollow profile at an end of the second frame element and firmly connectable to second frame element, wherein the mounting element comprises at least one mounting hole, the connector part comprises at least one mounting spigot corresponding to the at least one mounting hole, which is designed to be plugged into the at least one mounting hole, the connector part comprises at least one mounting mechanism for a detachable, firm connection of the mounting element and the connector part.