A platform leveling apparatus with a platform attached to a frame, two and only two linear actuators, and one and only one heim joint. The upper ends of the linear actuators are rotatably attached to the front frame member, and the heim joint is connected to the rear frame member. The lower end of the heim joint is connected to an upper end of a heim joint support, and the lower end of the heim joint support is connected to a rear base support by front and/or rear heim joint braces. The rear base support is oriented parallel to the rear frame member when the heim joint is at a centered position, and the rear base support is positioned below a front edge of the rear frame member. The lower ends of the linear actuators are rotatably connected to a first fixed surface.

The disclosure discloses a sofa backrest connection structure, including a first member and a second member, the first member includes a first base plate, two guide rails symmetrically arranged on the first base plate, and a limiting part arranged on the first base plate, and the limiting part is provided with a clamping protrusion; the second member includes a second base plate and a first horizontal plate connected to the second base plate, the second base plate includes an insertion part, and the insertion part is provided with a clamping hole matched with the clamping protrusion; after the insertion part is slidably inserted into and fitted with the two guide rails, the clamping protrusion is clamped in the clamping hole; and the first horizontal plate is used for being connected with a sofa seat frame, and the first base plate is used for being connected with a sofa backrest.

The disclosure discloses a sofa backrest connection structure, including a first member and a second member, the first member includes a first base plate, two guide rails symmetrically arranged on the first base plate, and a limiting part arranged on the first base plate, and the limiting part is provided with a clamping protrusion; the second member includes a second base plate and a first horizontal plate connected to the second base plate, the second base plate includes an insertion part, and the insertion part is provided with a clamping hole matched with the clamping protrusion; after the insertion part is slidably inserted into and fitted with the two guide rails, the clamping protrusion is clamped in the clamping hole; and the first horizontal plate is used for being connected with a sofa seat frame, and the first base plate is used for being connected with a sofa backrest.

A furniture spring system includes a lid configured to provide a seating surface. The lid includes a frame having two opposing frame members and a retention member associated with at least one of the two opposing frame members. The furniture spring system further includes a slat extending between the two opposing frame members. The slat includes a plurality of slat portions adjustably coupled to each other, such that a total length of the slat is adjustable.

A furniture spring system includes a lid configured to provide a seating surface. The lid includes a frame having two opposing frame members and a retention member associated with at least one of the two opposing frame members. The furniture spring system further includes a slat extending between the two opposing frame members. The slat includes a plurality of slat portions adjustably coupled to each other, such that a total length of the slat is adjustable.

A convertible lounge sofa system for seating, lounging, and working having a sofa seat bottom having a dual armrest/headrest positioned on one end, sofa seat bottom is configurable thereto a side facing chaise lounge seat having a back support segment, a center segment, a seat pan segment, and a lower leg support segment, and a sofa seat back configured to be opened, with deployable working surface, a storage feature, a power/data feature, and a lighting feature, and, thus, functions to enable seating configurations that utilize reduced floor space with smaller foot prints, and enable multi-person seating as in 1-2 or more and then conversion into a single person lounge or work seating by rotating 90 degrees.

A convertible lounge sofa system for seating, lounging, and working having a sofa seat bottom having a dual armrest/headrest positioned on one end, sofa seat bottom is configurable thereto a side facing chaise lounge seat having a back support segment, a center segment, a seat pan segment, and a lower leg support segment, and a sofa seat back configured to be opened, with deployable working surface, a storage feature, a power/data feature, and a lighting feature, and, thus, functions to enable seating configurations that utilize reduced floor space with smaller foot prints, and enable multi-person seating as in 1-2 or more and then conversion into a single person lounge or work seating by rotating 90 degrees.

A collapsible storage unit with wheels comprises front, rear, left and right wall panels and, optionally, a bottom panel. The left and right wall panels are foldable inwardly to create a collapsed storage unit that is relatively flat. In another embodiment, the front and rear wall panels are foldable in a similar manner. The collapsible storage unit further comprises removable support beams, and in a disclosed embodiment, an optional removable support rod, extending between the front and rear wall panels. Wheels are affixed to the support beams such that the collapsible storage unit may be readily moved across multiple types of surfaces. A handle may be attached to or formed in a wall panel to provide easier grip and movement of the collapsible storage unit.

The present disclosure provides a multifunctional cup holder for installation on a sofa and a sofa thereof. The cup holder includes: a base configured to attach to a sofa; a cup body; a flange disposed at an upper end of the cup body; and a control assembly disposed on the flange. A lower end of the cup body is attached to the base. The flange is detachable from the upper end of the cup body, and the flange extends radially inward towards a center of the cup body. The control assembly is removable from the flange and is configured to control operations of the multifunctional cup holder or adjustments of the sofa.

The present disclosure provides a multifunctional cup holder for installation on a sofa and a sofa thereof. The cup holder includes: a base configured to attach to a sofa; a cup body; a flange disposed at an upper end of the cup body; and a control assembly disposed on the flange. A lower end of the cup body is attached to the base. The flange is detachable from the upper end of the cup body, and the flange extends radially inward towards a center of the cup body. The control assembly is removable from the flange and is configured to control operations of the multifunctional cup holder or adjustments of the sofa.