A self-locking mechanism and a folding sofa are provided. The self-locking mechanism includes a support member, a locking member, a drive member and a switch member. The support member has a first end and a second end opposite to each other. The locking member has a first connection portion and a locking portion, and the first connection portion of the locking member is pivotally connected to the first end of the support member. One end of the drive member is pivotally connected to the first connection portion of the locking member. The switch member has a second connection portion and a switch portion, where the second connection portion of the switch member is pivotally connected to the second end of the support member and the other end of the drive member.

Embodiments provide a foldable sofa bed. In the embodiments, the foldable sofa bed includes a foldable bed frame consisting of a first folding frame and a second folding frame.

A convertible sofa can move between a storage/transport position and a fully expanded position. The sofa has a center section that is connected between left and right sections with actuators. The actuators are connected to sensors and a controller to move the sofa between its positions and prevent movement if components are not properly positioned. The center section has foldable seat backs that can fit under the left and right sections when the actuators are retracted and be hinged to be moved into a raised position to become backrests when the actuators are extended. The controller is connected to a slide-out to prevent the slide-out from retracting if the sofa is not in the storage/transport position.

A convertible sofa can move between a storage/transport position and a fully expanded position. The sofa has a center section that is connected between left and right sections with actuators. The actuators are connected to sensors and a controller to move the sofa between its positions and prevent movement if components are not properly positioned. The center section has foldable seat backs that can fit under the left and right sections when the actuators are retracted and be hinged to be moved into a raised position to become backrests when the actuators are extended. The controller is connected to a slide-out to prevent the slide-out from retracting if the sofa is not in the storage/transport position.

The invention relates to a folding framework for a piece of folding furniture such as a sofa bed, as well as a piece of folding furniture comprising this framework. The framework included a substantially rectangular head support mattress frame; a substantially rectangular upper body support mattress frame; a substantially rectangular lower body support mattress frame; a first hinge fixedly connected to the head support mattress frame; an elongated base beam provided in a longitudinal axis of the framework in the unfolded state; a head support coupling; a body support coupling; a front lever coupling; a rear lever coupling; a synchronization coupling; a second hinge; a pull lever; a locking coupling; a lever coupling; a foot section; and, a foot synchronization coupling.

Embodiments provide a foldable sofa bed. In the embodiments, the foldable sofa bed includes a sofa frame, a foldable bed frame and at least one folding support assembly; the foldable bed frame comprises a first folding frame and a second folding frame, and the at least one folding support assembly is mounted at a location where the first folding frame and the second folding frame are connected; each side of the sofa frame is provided with a rotary connector configured for connecting the first folding frame, and the first folding frame is capable to be unfolded towards a front of the sofa frame, to easily convert the sofa into a bed; the foldable bed frame is in a folded state; the foldable bed frame is in a folded state, the second folding frame is provided over the first folding frame by the folding support assembly.

Embodiments of the present disclosure provide a detachable modular sofa. In at least one embodiment, the detachable modular sofa includes a recliner and a sofa detachably connected to the recliner. The recliner includes a recliner backrest, a recliner side, a recliner bottom and a recliner forepart; between the recliner bottom and the recliner side, a first bottom adjusting bracket is provided. The sofa includes a sofa base and a lift assembly. The lift assembly includes a lift base and a lift bottom, and between the lift base and the lift bottom, a second bottom adjusting bracket is mounted.

Embodiments of the present disclosure provide a detachable modular sofa. In at least one embodiment, the detachable modular sofa includes a recliner and a sofa detachably connected to the recliner. The recliner includes a recliner backrest, a recliner side, a recliner bottom and a recliner forepart; between the recliner bottom and the recliner side, a first bottom adjusting bracket is provided. The sofa includes a sofa base and a lift assembly. The lift assembly includes a lift base and a lift bottom, and between the lift base and the lift bottom, a second bottom adjusting bracket is mounted.