Patent ID: 8641124

Claim:
A foldable tonneau cover of a pick-up truck, comprising: at least two frame sections having a plurality frame members and a cover portion, wherein the cover portion is a rigid metal plate, and each of the frame members is formed with an installation slot, a C-shaped insertion groove and a linear installation groove; and a plurality of hinges pivotally connecting two of the adjacent frame sections, and each of the hinges comprising: two pivotal members, each of which is connected to the frame members of the frame section and has at least one first through hole; a base member having at least two second through holes, each of which is corresponding to the first through hole of each of the pivotal members; and two detachable screwing assemblies, each of which has a bolt member and a nut member, wherein the bolt member has a thread rod, the nut member has a thread hole provided with a tight fitting member inserted therein, and the thread rod of the bolt member is screw-connected to the thread hole of the nut member and tightly fitted with the tight fitting member in the thread hole.