Patent ID: 7315100

Claim:
A motor, adapted to be used in a fan, comprising: a stator, comprising a stator base with an opening, a first magnetic structure disposed at a bottom of the opening or a protrusion protruding from a sidewall of the opening, and a second magnetic structure disposed at a portion of the stator base encircling the opening; a rotor coupled to the stator, comprising a hub, a shaft, a third magnetic structure disposed at the hub, encircling one end of the shaft and corresponding to the first magnetic structure, and a fourth magnetic structure disposed at the hub without contacting the second magnetic structure; a housing, surrounding to stator and the rotor; and a fifth magnetic structure disposed at the other end of the shaft protruding from the other side of the hub; and a sixth magnetic structure disposed at the housing above and not touching the fifth magnetic structure; wherein magnetic attraction is generated between the first and the third magnetic structures; and magnetic attraction is generated between the second and the fourth magnetic structures.