Patent ID: 8861211

Claim:
A pivot structure, comprising; a gear mechanism having at least one connecting board and a gear set, wherein the gear set comprises a first gear, a plurality of transmitting gears, and an end gear, wherein the first gear, the transmitting gears, and the end gear are engaged in sequence; a first pivot assembly having a first shaft passing through the connecting board and the first gear; and a second pivot assembly having a second shaft passing through the connecting board and the end gear, a bottom stand disposed on the first shaft; a stand disposed on the second shaft; wherein the transmitting gears comprise a first transmitting gear, and the first gear has an A-shaped teeth portion departed from the first transmitting gear when the stand is rotated between 0 degree and a first middle angle relative to the bottom stand, and the A-shaped teeth portion drives the first transmitting gears to rotate the end gear, wherein the connecting board is rotated about the second shaft of the second pivot assembly when the stand is rotated between the first middle angle and a second middle angle relative to the bottom stand, and the A-shaped teeth portion departs from the first transmitting gear when the stand is rotated between the second middle angle and 180 degrees relative to the bottom stand.