Patent ID: 7061155

Claim:
A rotor capable of dissipating heat and resisting foreign objects, comprising: a hub, having a closed wall and a hub wall extending downward from the closed wall and the closed wall at least having a first through hole; a shield case, being disposed in the hub, having an upper wall and a circumferential wall extending downward from the upper wall and the upper wall at least having a second through hole; characterized in that the closed wall of the hub is attached with at least a wedge shaped projection disposed at the inner side thereof near an intersection of the closed wall and the hub wall and the hub wall is attached with at least an elongated plate shaped projection at the inner side thereof and extending from the middle thereof to the intersection such that the wedge shaped projection contacts with the upper wall of the shield case and the elongated plate shaped projection contacts with the circumferential wall of the shield case to form a gap between the hub and the shield case; and the first through hole and the second through hole are arranged to misalign from each other.