Patent ID: 7237304

Claim:
A hinge assembly for joining a body and a cover of a foldable electronic device, the hinge assembly comprising: a central shaft, comprising an outer screw thread at a second end thereof; a turning element, comprising a first central hole and a holding pin, an inner screw thread formed at an inner surface of the turning element in the first central hole; a first elastic means; a blocking element, defining a first through hole and a second through hole; and a button, comprising a supporting pin; wherein the central shaft extends through the first central hole of the turning element, the first elastic element, and the first through hole of the blocking element in that order, the outer screw thread of the central shaft engages with the inner screw thread of the turning element, a first end of the first elastic means is supported by the blocking element, a second end of the first elastic means is supported by the turning element, and the holding pin of the turning element is received in the second through hole of the blocking element and corresponds to the supporting pin of the button.