Patent ID: 11901798
Assignee: NEW MOTECH CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 0:
1. A fan motor comprising:
a fan 10 comprising a fan body 11 having a circular plate shape, a plurality of fan blades 12 formed in an upper portion of the fan body 11, a central protruding part 13 protruding upwardly from a central portion of the fan body 11, a shaft fixing part 14 formed in an inner side of the central protruding part 13, a shaft 15 coupled and fixed to the shaft fixing part 14 to rotate when the fan body 11 rotates, and a magnet receiving part 16 formed in a central lower portion of the fan body 11;
a ring plate magnet 20 coupled to the magnet receiving part 16;
a motor bracket 30 having a PCB bracket coupling part 31 formed in a center;
a PCB bracket 40 comprising a body 41 having a cup shape, a bearing insertion part 42 having a cylinder shape, protruding upwardly from a center of the body 41, a through-hole 44 formed inside the bearing insertion part 42, into which a bearing 45 is inserted, and the bearing 45 inserted and fixed to the through-hole 44; and
a coil-PCB assembly 50 comprising a coil cover 51, a pair of D-type coils 52 installed in the coil cover 51, and a PCB 53 located in a lower portion of the coil cover 51 and installed in the body 41,
wherein the ring plate magnet 20 installed in a lower portion of the fan body 11 is located in an upper portion of the pair of D-type coils 52 to face therewith,
wherein the fan 10 is formed by an insert injection molding with the shaft 15 and the ring plate magnet 20 located in a mold, whereby the ring plate magnet 20 is directly coupled to the magnet receiving part 16,
wherein a plurality of fixing holes 20A are formed in the ring plate magnet 20,
wherein a plurality of fixing projections 16A formed in the magnet receiving part 16 is coupled to the plurality of fixing holes 20A.