Patent ID: 6926498

Claim:
A fan wheel assembly comprising: a hub having a storage portion and a plurality of blades arranged around a circumference of said hub, an axis shaft is disposed in a center of said storage portion; and a metal case with a magnetic part is located in said storage portion of said hub; a plurality of blocking chunks are located on an end of said storage portion of said hub, at least one hook is disposed at a predetermined position in the end of said storage portion of said hub, and a plurality of ribs are disposed inside said storage portion of said hub; and said metal case has a penetrated hole with a stopper in one end of said penetrated hole, a recess is located between said stopper and said magnetic part; whereby, when said metal case is disposed in said storage portion, said hook in said end of said storage portion of said hub hooking in said recess between said magnetic part and said stopper and positioning said metal case with said blocking chunks and ribs, said metal case is firmly attached in said storage portion.