Patent ID: 7695256

Claim:
A miniature fan comprising: a base including a compartment, with a shaft tube being mounted in the compartment, with the base further including an opening in a top side thereof and an air outlet in a lateral side thereof, with the opening and the air outlet being in communication with the compartment; a stator mounted in the compartment of the base; a rotor including a hub and a shaft mounted to the hub, with the shaft rotatably extending through the shaft tube of the base in an axial direction, with a plurality of blades formed on, extending radially outward of and circumferentially spaced on an outer periphery of the hub, with each of the plurality of blades including a bottom edge extending radially outward of the hub; a magnetically sealing ring including first and second engaging faces spaced in the axial direction, with the first engaging face being coupled to the bottom edge of each of the plurality of blades, with the magnetically sealing ring further including a positioning hole through which the outer periphery of the hub extends; and a permanent magnet coupled to the second engaging face of the magnetically sealing ring and aligned with the stator.