The invention discloses a sofa seat frame, a sofa base assembly, a sofa and a sofa production and assembly process, the sofa seat frame comprises two cross beams arranged at intervals and two longitudinal beams connecting the two cross beams, wherein a plurality of supporting elastic pieces are arranged between the two cross beams; and each longitudinal beam comprises a first supporting plate for supporting a seat cushion and a first side plate arranged at one side of the lower part of the first supporting plate and used for being detachably connected with sofa fabric on the seat cushion. In the sofa seat frame provided by the invention, when the seat cushion is placed on the supporting elastic pieces, the first supporting plates can give a certain supporting force to the seat cushion, so as to improve the sitting comfort of users.

A collapsible and portable reclining chair includes a leg assembly, a seat assembly defining a seat support and a back support, and an independently movable leg rest support. Such a chair can be folded and unfolded between a set-up condition of the chair for use, and a collapsed and folded condition of the chair for transport and/or storage. In use, the seat assembly can be shifted between an upright position and a reclined position where the back support angularly pivots backwards. In use, the leg rest support can be pivotally shifted from a lowered position to an upright position relative to the seating assembly—operating similar to a conventional LA-Z-BOY recliner using a handle disposed on a side of the chair frame that is moved by the user to effectuate movement of the leg rest support independent of any reclining adjustment of the seat assembly.

The present disclosure provides a movable chair support structure including a movable mechanism, a fixing support structure and a chair support structure. The movable mechanism includes a transmission component and a movable component. The chair support structure includes a chair support portion, which has a length of 500 mm to 530 mm. When the movable chair support structure is disposed on the ground, the chair support portion is inclined relative to a direction parallel to the ground. The chair support portion is pivotally connected to the movable component. The movable component is pivotally connected to the fixing support structure. The transmission component is independently pivotally connected to the chair support portion and the movable component, respectively. The transmission component rotates relative to the chair support structure and drives the movable component to move, so as to adjust a position of the chair support structure relative to the fixing support structure.

The present application relates to an unfolding device of sofa, including a base. A side plate is provided above the base, and a connecting rod assembly is connected between the side plate and the base; the side plate is provided with a mounting assembly for connecting to a sitting portion; a footrest assembly and a backrest connecting member is mounted on and rotatably connected with the side plate; the base is provided with a driving assembly, configured for driving the footrest assembly to rotate and the side plate to move towards a front of the unfolding device.

A simplified, compact, recliner mechanism is provided which can be adapted to many types of recliner design. A front linkage assembly and a rear linkage assembly provide the desired movement of the seat and back when moving from the TV position to the fully reclined position, obviating the need for a track and roller design. Moreover, a front pivot link and a rear pivot link are provided and oriented in a manner that allows the desired forward seat movement as the recliner moves from the closed position to the TV position. The geometries of the front linkage assembly, the rear linkage assembly, the front pivot link and the rear pivot link allow a slim profile design allowing great flexibility in the design of the recliner.

A simplified, compact, recliner mechanism is provided which can be adapted to many types of recliner design. A front linkage assembly and a rear linkage assembly provide the desired movement of the seat and back when moving from the TV position to the fully reclined position, obviating the need for a track and roller design. Moreover, a front pivot link and a rear pivot link are provided and oriented in a manner that allows the desired forward seat movement as the recliner moves from the closed position to the TV position. The geometries of the front linkage assembly, the rear linkage assembly, the front pivot link and the rear pivot link allow a slim profile design allowing great flexibility in the design of the recliner.

An armchair includes a base, a backrest pivotally connected to the base by a first rotating shaft, an armrest connected to the base and an elastic assembly fixed on the armrest. The backrest and the elastic assembly are pivotally connected by a second rotating shaft. The elastic assembly is configured to provide elastic force when the backrest swings around the first rotating shaft. The elastic assembly arranged between the backrest and the armrest permits the backrest to be able to swing relative to the base. In use, the elastic assembly controls the swing amplitude of the backrest according to the pressure exerted by the user's back on the backrest. When the user reclines backward, the elastic assembly acts as a cushion to support the backrest to slowly swing backward due to the elastic force. When the user rises, the elastic force of the elastic assembly urges the backrest to reset.

An armchair includes a base, a backrest pivotally connected to the base by a first rotating shaft, an armrest connected to the base and an elastic assembly fixed on the armrest. The backrest and the elastic assembly are pivotally connected by a second rotating shaft. The elastic assembly is configured to provide elastic force when the backrest swings around the first rotating shaft. The elastic assembly arranged between the backrest and the armrest permits the backrest to be able to swing relative to the base. In use, the elastic assembly controls the swing amplitude of the backrest according to the pressure exerted by the user's back on the backrest. When the user reclines backward, the elastic assembly acts as a cushion to support the backrest to slowly swing backward due to the elastic force. When the user rises, the elastic force of the elastic assembly urges the backrest to reset.

A structurally improved manual sofa stretching device includes a base. A functional frame is arranged on the base. The functional frame includes a leg structure, a seat structure and a back structure. The leg structure is connected to the seat structure, and the seat structure is connected to the back structure. The seat structure includes a mounting side plate, and the mounting side plate is arranged on the base. The leg structure includes a third foot rod, a fourth foot rod, a first extension link rod, a second extension link rod, a third extension link rod, a fourth extension link rod, a first Z-shaped linkage rod, a second Z-shaped linkage rod, a first footrest, a second footrest and a small footrest.

A structurally improved manual sofa stretching device includes a base. A functional frame is arranged on the base. The functional frame includes a leg structure, a seat structure and a back structure. The leg structure is connected to the seat structure, and the seat structure is connected to the back structure. The seat structure includes a mounting side plate, and the mounting side plate is arranged on the base. The leg structure includes a third foot rod, a fourth foot rod, a first extension link rod, a second extension link rod, a third extension link rod, a fourth extension link rod, a first Z-shaped linkage rod, a second Z-shaped linkage rod, a first footrest, a second footrest and a small footrest.