Fan device

Abstract

A fan device includes a protective net and a fan. The protective net has a mounting plate. The fan comprises a base, a coil assembly, a blade assembly and a permanent magnet. The base is provided on the mounting plate of the protective net. The coil assembly is provided on the base. The blade assembly is provided rotatably on the base. The permanent magnet is provided in the blade assembly adjacent to the coil assembly. Via the above arrangement, since the fan is connected to the protective net with the fan being disposed on the protective net, a frame can be omitted to reduce the material cost. Further, when being mounted to a housing of an electronic device, the present invention can be assembled or disassembled very easily.

1 . A fan device, comprising:
 a protective net having a mounting plate; and   a fan comprising a base, a coil assembly, a blade assembly and a permanent magnet, the base being fixed on the mounting plate of the protective net, the coil assembly being provided on the base, the blade assembly being provided rotatably on the base, the permanent magnet being provided in the blade assembly adjacent to the coil assembly.   
     
     
         2 . The fan device according to  claim 1 , wherein the protective net has a plurality of fixing supports. 
     
     
         3 . The fan device according to  claim 1 , wherein the protective net has a net body, and the mounting plate is provided on the net body. 
     
     
         4 . The fan device according to  claim 1 , wherein the base of the fan is fixed on the mounting plate of the protective net by means of screws. 
     
     
         5 . The fan device according to  claim 4 , wherein the mounting plate is provided thereon with a plurality of first fixing holes, the base is provided thereon with a plurality of second fixing holes, a plurality of screws penetrate the first fixing holes and the second fixing holes. 
     
     
         6 . The fan device according to  claim 1 , wherein the base of the fan is clamped to the mounting plate of the protective net. 
     
     
         7 . The fan device according to  claim 1 , wherein the base of the fan is integrally formed with the mounting plate of the protective net. 
     
     
         8 . The fan device according to  claim 1 , wherein the base is provided with a bearing seat, the interior of the bearing seat is provided with a bearing, the blade assembly has a hub whose outer edge is provided with a plurality of blades, the interior of the hub is provided with a spindle, the spindle penetrates the bearing, the permanent magnet is provided in the hub, and the hub covers the coil assembly. 
     
     
         9 . The fan device according to  claim 1 , wherein the fan has a circuit board, the circuit board is provided on the base, and the coil assembly is electrically connected with the circuit board. 
     
     
         10 . The fan device according to  claim 1 , wherein the rim of the protective net extends to form a guard, and the guard has a plurality of rods surrounding the fan. 
     
     
         11 . The fan device according to  claim 1 , wherein an outer edge of the protective net extends to form an air-guiding device, and the air-guiding device has a plurality of air-guiding pieces surrounding the fan.