Patent ID: 8770925

Claim:
A fan module comprising: a fan; and an air duct comprising a mounting bracket mounted to the fan, and a plurality of guiding plates rotatably mounted to the mounting bracket; wherein each guiding plate comprises a latching piece mounted to the guiding plate, and the mounting bracket defines a plurality of groups of positioning holes, with each group of positioning holes corresponding to the latching piece of each guiding plate, and the latching piece is selectively positioned by one of the corresponding group of positioning holes; wherein the mounting bracket comprises two first lateral plates parallel to each other, and two second lateral plates substantially perpendicularly connected between corresponding ends of the first lateral plates, the second lateral plates each define a plurality of pivot holes adjacent to the fan, two pivot pins extend from two opposite ends of a top side of each guiding plate to be respectively and rotatably mounted in corresponding two of the pivot holes of the second lateral plates; wherein the positioning holes are defined in one of the second lateral plates, the latching piece is mounted to an end of each guiding plate, adjacent to the corresponding one of the groups of positioning holes, a positioning pin extends from the latching piece to be selectively positioned in one of the positioning holes of the corresponding group; and wherein each latching piece is elastic, an operation portion is formed at an extremity of the latching piece, a positioning portion is formed at a center of the latching piece, the positioning pin extends from the positioning portion.