A folding chair includes front and rear supports that fold and/or retract into central beams to reduce the space occupied by the chair in a folded configuration. A backrest is coupled to the central beams with a hub that allows an angle of the backrest relative to the central beams to be selected and for the backrest to be folded flat relative to the central beams. One or more actuators and pin actuators may control the relative movements of the backrest, front support, rear support, and central beams.

A folding chair includes front and rear supports that fold and/or retract into central beams to reduce the space occupied by the chair in a folded configuration. A backrest is coupled to the central beams with a hub that allows an angle of the backrest relative to the central beams to be selected and for the backrest to be folded flat relative to the central beams. One or more actuators and pin actuators may control the relative movements of the backrest, front support, rear support, and central beams.

A support for a chair includes: a base plate (110); support plates (120, 130), of which one sides are rotatably coupled to the base plate (110); and a first hinge (150) which connects the base plate (110) and the support plates (120, 130) to be rotatable, wherein the base plate (110) is supported by a seat portion (11) of a chair (10) and the support plates (120, 130) are supported by a back portion (12) of the chair (10) while the base plate (110) and the support plates (120, 130) are unfolded at a first maximum unfolding angle (θ1m) and support the upper body of a user.

There is provided an outdoor seat collapsible from an open position to a closed position. The seat including: a back rest that rotates until the back rest abuts a top of a seat rest to move to the closed position; a plurality of legs connected to the seat rest, the back rest, or both; and a front flap rotatably connected to the back rest or the seat rest, the front flap rotates to cover front facing portions of the back rest and the seat rest while in the closed position. Also provided is a hinge assembly, including an elongated hinge that defines a hole proximate to a first end and a slot proximate to a second end; the hole receives a first pin to permit rotation of a first portion, the slot receives a second pin to permit rotation and lateral movement of the hinge relative to a second portion.

A portable lumbar support and ergonomic chair having a lumbar support. The lumbar support has a seat hingedly coupled to a seat back having a teardrop-shaped lumbar support seat back cushion. A rigid back support portion may be rotated forward about hinges to collapse substantially parallel to the seat frame and backward to open to a variety of angles with respect to the seat frame. The seat back freely pivots around an upper lateral axis, and the rigid back support portion is linearly adjustable to space the seat back toward and away from the hinges to enable raising or lowering the upper lateral axis and thus the seat back with respect to the lower lateral axis. This provides multiple ways of changing which part of the teardrop-shaped lumbar support curve hits your lumbar curve for proper support. Variable lumbar lordotic support is thus provided.

Convertible chairs that can be converted to and from an open chair configuration to a box or table configuration for storage and protection of the interior portions is provided. The convertible chairs can have include one or more of a sunshade, adjustable foot rest, legs, wheels, and can in some embodiments be a reclining chair. In some aspects, a cover portion can be used to cover a portion of the interior portions of the chair when the convertible chair is in a box configuration, and be folded and retracted into a pocket of the convertible chair when in an open chair configuration.

A ready to assemble or knockdown sofa having a back rest that can be reconfigured between a use configuration in which the sofa is has a conventional L-shaped cross-section and a shipping or storage configuration in which the sofa is arranged in a more efficiently stacked rectangular cross-section. The rectangular cross-section allows the sofa to be more efficiently stacked with other sofas during shipping or storage. The back rest has an upper back rest portion and a lower back rest portion in which the upper back rest portion can be rotated forward toward the front of the sofa and downwardly into a nesting region against the top of the seat base to provide a more efficient shape.

There is provided an outdoor seat collapsible from an open position to a closed position. The seat including: a back rest that rotates until the back rest abuts a top of a seat rest to move to the closed position; a plurality of legs connected to the seat rest, the back rest, or both; and a front flap rotatably connected to the back rest or the seat rest, the front flap rotates to cover front facing portions of the back rest and the seat rest while in the closed position. Also provided is a hinge assembly, including an elongated hinge that defines a hole proximate to a first end and a slot proximate to a second end; the hole receives a first pin to permit rotation of a first portion, the slot receives a second pin to permit rotation and lateral movement of the hinge relative to a second portion.

A rotation adjustment system for seats includes a first viewing chair and a second viewing chair. The first viewing chair includes a first seat part and a first backrest part which is stood from the first seat part to maintain the seating function of the first seat part, and is laid down toward the first seat part to disable the seating function of the first seat part. The second viewing chair includes a second seat part and a second backrest part which is stood from the second seat part to maintain the seating function of the second seat part, and is laid down toward the second seat part to disable the seating function of the second seat part.

An adjustable rotary rocking chair having a chair frame assembly A, an adjustment mechanism B, and a support tube assembly C, wherein the adjustment mechanism B is detachably connected with the chair frame assembly A and is connected with the support tube assembly C in an insertion manner. The adjustable rotary rocking chair can swing and rotate, has higher flexibility and adaptability due to the fact that the height of the rocking chair and the height of the support tubes can be automatically adjusted by users, is portable through a folding design, and can be used indoors and outdoors.