An angle adjustment assembly includes a first connecting piece including first side plates, a second connecting piece including second side plate, and a limiting rod. The first side plates are hinged to the second side plates. The first side plates include a through hole that is arc-shaped and centered at a hinge joint of the first side plates and the second side plates. A path of the through hole has at least one expansion groove. The limiting rod is axially movably connected with a corresponding second side plate. The limiting rod includes a first sections and a second section. A diameter of the first section is smaller than a diameter of the second section. A size of the first section matches a size of the through hole. A size of the second section matches a size of the at least one expansion groove.

A multifunctional sofa includes armrest assemblies and seat units. A middle armrest is arranged between the adjacent seat units, and a front end of the middle armrest is provided with a cupholder. An upper end surface of the cupholder is provided with a cup slot, and an outer cover is also provided outside the cupholder. The outer cover may rotate relative to the cupholder to allow the one cup slot to be unfolded or folded. A movable function rack capable of rotating outwards relative to the armrest assembly is arranged in each of armrest assemblies. The movable function rack is provided with a function table. In the hidden position, the movable function rack is entirely located in the accommodating groove. In the use position, the movable function rack rotates outwards from the accommodating groove to protrude from the armrest assembly, and the function table is exposed outside.

A multifunctional sofa includes armrest assemblies and seat units. A middle armrest is arranged between the adjacent seat units, and a front end of the middle armrest is provided with a cupholder. An upper end surface of the cupholder is provided with a cup slot, and an outer cover is also provided outside the cupholder. The outer cover may rotate relative to the cupholder to allow the one cup slot to be unfolded or folded. A movable function rack capable of rotating outwards relative to the armrest assembly is arranged in each of armrest assemblies. The movable function rack is provided with a function table. In the hidden position, the movable function rack is entirely located in the accommodating groove. In the use position, the movable function rack rotates outwards from the accommodating groove to protrude from the armrest assembly, and the function table is exposed outside.

A retractable furniture carriage is capable of supporting a piece of furniture off of a floor, and allowing the furniture to be rolled across the floor. The retractable furniture carriage includes wheels mounted by a frame to the furniture. The frame can be pivoted for moving the wheels between a deployed position in which they engage and support the furniture to a stowed position in which the wheels are off the floor. Actuation of the frame can be carried out from the side of the furniture through frame structure largely located underneath the furniture.

A retractable furniture carriage is capable of supporting a piece of furniture off of a floor, and allowing the furniture to be rolled across the floor. The retractable furniture carriage includes wheels mounted by a frame to the furniture. The frame can be pivoted for moving the wheels between a deployed position in which they engage and support the furniture to a stowed position in which the wheels are off the floor. Actuation of the frame can be carried out from the side of the furniture through frame structure largely located underneath the furniture.

An adjustable base is provided that includes a fixed frame and an articulating frame connected to the fixed frame. The articulating frame includes an upper body frame pivotally connected to the upper section of the fixed frame, a seat frame pivotally connected to the upper body frame and movable along a central section of the fixed frame, and a leg frame pivotally connected to the fixed frame. An actuator is further included and has a first end connected to the seat frame adjacent to the leg frame and a second end that is connected to a linkage attached to the articulating frame. Upon activation of the actuator, the upper body frame is articulated upward and the seat frame moves linearly along the central section of the fixed frame toward the upper section of the fixed frame. Systems and methods for controlling an adjustable base assembly are further provided.

An adjustable base is provided that includes a fixed frame and an articulating frame connected to the fixed frame. The articulating frame includes an upper body frame pivotally connected to the upper section of the fixed frame, a seat frame pivotally connected to the upper body frame and movable along a central section of the fixed frame, and a leg frame pivotally connected to the fixed frame. An actuator is further included and has a first end connected to the seat frame adjacent to the leg frame and a second end that is connected to a linkage attached to the articulating frame. Upon activation of the actuator, the upper body frame is articulated upward and the seat frame moves linearly along the central section of the fixed frame toward the upper section of the fixed frame. Systems and methods for controlling an adjustable base assembly are further provided.

Sleeping equipment includes a mat body and a plurality of air bags. The mat body includes a middle support portion, an upper support portion, and a lower support portion. The mat body is configured to switch between a bed mode and a chair mode. The air bags are arranged in the mat body in a mat length direction from the upper support portion toward the lower support portion. At least a part of the air bags is divided into right and left bag portions in a mat width direction, and the right bag portion and the left bag portion are configured to be independently inflated and deflated.

Sleeping equipment includes a mat body and a plurality of air bags. The mat body includes a middle support portion, an upper support portion, and a lower support portion. The mat body is configured to switch between a bed mode and a chair mode. The air bags are arranged in the mat body in a mat length direction from the upper support portion toward the lower support portion. At least a part of the air bags is divided into right and left bag portions in a mat width direction, and the right bag portion and the left bag portion are configured to be independently inflated and deflated.

A system for constructing and shipping full-sized (or larger) RTA articles of furniture in a smaller volume, resulting in more efficient and dense packing of multiple articles on standard international cube shipping containers. Each full-sized or larger RTA article of furniture is constructed so that it in a partially assembled state it can be arranged and packed in a shipping box or container of 26.5 inches or less in height and 30.6 inches or less in width. Lengths may vary, but common lengths are 45 inches, 66 inches, and 90 inches. The system thus results in a substantial increase (approximately 33%) in the number of articles of furniture that can be shipped in a single standard international cube shipping container, thereby greatly reducing the shipping cost per article of furniture.