Patent ID: 7913357

Claim:
A hinge positioning structure comprising: a pair of first leaves; a pivot shaft rotatably engaged to the pair of first leaves; a pair of pivot shaft grippers tightly sleeved on the pivot shaft, and each pivot shaft gripper comprising a first end engaged with each of the first leaves respectively so that the end of each pivot shaft gripper is fixed relative to each of the first leaves, such that the pivot shaft is locked with the first leaves, and a pair of second leaves fixed relative to the pivot shaft; the pair of pivot shaft grippers being relaxedly sleeved on the pivot shaft by an external force for releasing the pivot shaft and the first leaves and allowing the pivot shaft to rotate relative to the first leaves, wherein each of the second leaves is a sheet defining an engaging hole, the pivot shaft has two engaging protrusions formed at two ends thereof, a size and a shape of the engaging protrusions are corresponding to that of the engaging holes of the second leaves, and each of the two engaging protrusions is engaged in the engaging hole of each of the second leaves respectively, such that the second leaves are non-rotatable relative to the pivot shaft.