A fan assembly mechanism is disclosed for mounting a fan member on a wall mounting
surface of a casing, including the fan member having a flat mounting surface and
a space for receiving at least one fan; at least one fastening member formed on
the flat mounting surface; and an elastic fastener having its one side fixed on
the fan member and at least one latching portion protruded out of the flat mounting
surface. The fan assembly mechanism allows the fastening member to engage a corresponding
hole on the wall mounting surface of the casing, and the latching portion to engage
another hole on the casing, so as to assemble the fan member to the casing.