Patent ID: 6896331

Claim:
A seat structure comprising: a seat portion; a backrest portion adjustable in inclination angle; and a bridging member covering up a flexion portion between said seat portion and said backrest portion for bridging said seat portion and said backrest portion smoothly on a top side of said seat portion and said backrest portion; wherein said backrest portion can be selectively inclined so that said seat structure has a form of a chair, and selectively reclined so that said seat structure has a form of a bed, respectively by adjusting an inclination angle of said backrest portion; wherein said flexion portion comprises a pivotable hinge joint that hingedly interconnects said seat portion and said backrest portion, wherein said hinge joint includes a convex protrusion that protrudes upwardly above said top side of at least one of said seat portion and said backrest portion, and wherein said bridging member is flexible and smoothly covers said convex protrusion.