Patent ID: 7933118

Claim:
An expansion unit for an electronic device adapted to be detachably assembled to the electronic device, wherein the electronic device comprises a device connector on one side thereof, the expansion unit for the electronic device comprising: a base; a pivoting mechanism located on one side of the base and comprising a shaft and a bearing fitting therewith, wherein the shaft is rotated about a rotation axis relative to a bearing on the electronic device; and an expansion unit connector disposed in the shaft and rotated along with the shaft relative to the bearing fitting, and being detachably and electrically connected to the device connector along a movement axis that is substantially parallel to the rotation axis and further comprising another shaft disposed on another side of the base for fitting the bearing disposed on another side of the electronic device; wherein when the expansion unit connector is connected to the device connector, the position of the electronic device relative to the base is adjusted by the pivoting mechanism.