Patent ID: 8015666

Claim:
A hinge assembly, comprising: a pivot shaft comprising a first end and a second end opposite to the first end; a fixing module non-rotatably sleeved on the pivot shaft adjacent to the first end, comprising a first magnet and a first friction member sleeved on the pivot shaft; a rotatable module rotatably sleeved on the pivot shaft adjacent to the second end, the rotatable module comprising a second magnet and a second friction member sleeved on the pivot shaft and abutting the first friction member, wherein a polarity of the second magnet faces an opposite polarity of the first magnet such that the first and second magnets create an attracting force, and the rotatable module is pushed to tightly contact the fixing module by the attracting force such that a friction is created between the rotatable module and the fixing module to hold the rotatable module; and a fixing member fixed at the second end of the pivot shaft to prevent the rotatable module from detaching from the pivot shaft.