Linkage mechanism and a folding sofa bed that includes same

Abstract

Aspects of this disclosure provide a linkage mechanism and a folding sofa bed that includes the linkage mechanism, including a linkage mechanism, a front frame, a middle frame, an outer frame, a front cushion, an inner cushion, an outer cushion, armrest cushions, and a covering cushion. The linkage mechanism features a simple and innovative structure that remains stable during operation. By utilizing sliding wheels that move back and forth within a sliding rail with a defined track, the operation of the linkage mechanism is easily completed with minimal effort.

Dependencies are inferred from the claim text.