Patent ID: 7936559

Claim:
A wide-angle double-hinge structure comprising: a) a coupling plate having a first retaining hole and a second retaining hole; b) a resistant hinge having a sleeve and a fastening axle, the sleeve is movable relative to the fastening axle, the fastening axle is connected to the first retaining hole of the coupling plate; and c) a cam hinge having a stem, an anchor plate, a first element, a second element, and a spring, the stem having a screw thread section and a polygonal section, the stem is inserted through the second retaining hole, the anchor plate, the first element, the second element, and the spring, a nut is connected to the screw thread section of the stem, the first element has a first cam action surface and a latch stub, the anchor plate has an anchor hole, the latch stub of the first element being inserted into the anchor hole of the anchor plate and fixing the first element relative to the anchor plate, the second element has a second cam action surface, the spring pressing the first cam action surface against the second cam action surface, wherein the coupling plate and the second element rotating concurrently with the polygonal section of the stem.