Three-phase driven stator structure and fan using same

A fan using a three-phase driven stator structure comprising:

• a frame having a bottom, a shaft barrel upward extended from the bottom, a bearing provided in the shaft barrel;
• a rotor having a hub, a plurality of blades extended radially outward from an outer circumferential surface of the hub, a magnetic element disposed below the hub, and a shaft vertically extended downward from a center of a lower inner side of the hub correspondingly inserted into the bearing in the shaft barrel to be rotatably connected to the shaft barrel of the frame;
• and
• a three-phase driven stator including:
• a plurality of laminated substrates disposed on the bottom of the frame and located around an outer side of the shaft barrel, each of which is provided with a tracing layer, a plurality of through holes, and a plurality of electrical connection vias;
• the tracing layer consisting of a plurality of induction coils, which are respectively arranged around an outer side of one of the through holes, and the induction coils on one substrate being extended through the electrical connection vias to electrically connect to the tracing layer on an adjacent substrate;
• and each of the through holes having a metal rod inserted therein.