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 chair includes, a seat, a backrest separated from the seat, and an upper support frame to which the backrest is attached at a position higher than the seat. In the chair, the upper support frame includes a left side portin and a right side portions both extending forward at left and right sides of the seated person and a rear portion that continuously and integrally connects the left side portion and the right side portion. The left side portion and the right side portion are connected to side support bodies arranged on left and right sides of the seat to be tiltable, and the backrest is connected to the upper support frame to be tiltable rearward.

A chair includes, a seat, a backrest separated from the seat, and an upper support frame to which the backrest is attached at a position higher than the seat. In the chair, the upper support frame includes a left side portin and a right side portions both extending forward at left and right sides of the seated person and a rear portion that continuously and integrally connects the left side portion and the right side portion. The left side portion and the right side portion are connected to side support bodies arranged on left and right sides of the seat to be tiltable, and the backrest is connected to the upper support frame to be tiltable rearward.

The present invention relates to support apparatus for supporting at least a portion of a gluteal region of a user while the user is seated in a seating apparatus comprising a seating surface, a back support surface and a transition region at the intersection of the seating surface and the back support surface. The support apparatus a support member structured to support at least a portion of the gluteal region of the user. The support apparatus further comprises a support element structured to position the support member at the transition region of seating apparatus such that the support member extends between the seating surface and the back support surface of the seating apparatus.

The present invention relates to support apparatus for supporting at least a portion of a gluteal region of a user while the user is seated in a seating apparatus comprising a seating surface, a back support surface and a transition region at the intersection of the seating surface and the back support surface. The support apparatus a support member structured to support at least a portion of the gluteal region of the user. The support apparatus further comprises a support element structured to position the support member at the transition region of seating apparatus such that the support member extends between the seating surface and the back support surface of the seating apparatus.

A seating configuration is described. The seating configuration includes a seat. The seat includes a feature to retain a user in a specific position on the seat. The seating configuration includes a first back support. The first back support is positioned adjacent a posterior pelvic area of the user. The seating configuration includes a second back support. The second back support is positioned adjacent to the thoracic area of the user. The seat, the first back support, and the second back support together can be configured to create a natural alignment of a spinal column of the user.

A seating configuration is described. The seating configuration includes a seat. The seat includes a feature to retain a user in a specific position on the seat. The seating configuration includes a first back support. The first back support is positioned adjacent a posterior pelvic area of the user. The seating configuration includes a second back support. The second back support is positioned adjacent to the thoracic area of the user. The seat, the first back support, and the second back support together can be configured to create a natural alignment of a spinal column of the user.

An orthopedic lounge chair includes a substantially flat support surface that has a length, a width, a front side, and a back side and defines a back support section, a seat section foldably joined to the back support section at a first fold junction, and a leg support section foldably joined to the seat section at a second fold junction, a first bolster support coupled to and rising away from the front side of the back support section, the first bolster support extending longitudinally at least a majority of the width of the support surface, a second bolster support coupled to and rising away from the front side of the seat support section, the second bolster support extending longitudinally at least a majority of the width of the support surface, and a third bolster support coupled to and rising away from the front side of the leg support section, the third bolster support extending longitudinally a majority of the width of the support surface, wherein the first bolster, the second bolster, and the third bolster are not located on the first fold junction or the second fold junction of the lounge chair.

The structure for adjusting a support force of a lumbar pillow includes: a backrest bracket, a lumbar pillow, an elastic support, and an adjustment mechanism; wherein a top of the lumbar pillow is flexibly connected to a front side of the backrest bracket; one end of the elastic support is connected to a back of the lumbar pillow, and the other end of the elastic support is provided with a slider, the slider being provided with an internally threaded hole; the adjustment mechanism includes a lead screw; and in response to the lead screw rotating with respect to the backrest bracket, the slider slides upward and downward along the vertical direction of the backrest bracket to change a support angle of the elastic support for the lumbar pillow, such that a magnitude of the support force of the elastic support to the lumbar pillow is adjusted.

The structure for adjusting a support force of a lumbar pillow includes: a backrest bracket, a lumbar pillow, an elastic support, and an adjustment mechanism; wherein a top of the lumbar pillow is flexibly connected to a front side of the backrest bracket; one end of the elastic support is connected to a back of the lumbar pillow, and the other end of the elastic support is provided with a slider, the slider being provided with an internally threaded hole; the adjustment mechanism includes a lead screw; and in response to the lead screw rotating with respect to the backrest bracket, the slider slides upward and downward along the vertical direction of the backrest bracket to change a support angle of the elastic support for the lumbar pillow, such that a magnitude of the support force of the elastic support to the lumbar pillow is adjusted.