Patent ID: 7969050

Claim:
A housing for an external rotor, comprising: a side wall ( 1 ); an end cover ( 2 ) directly connected to said side wall ( 1 ); a cavity ( 3 ) formed between said side wall ( 1 ) and said end cover ( 2 ); a plurality of wind wheels ( 8 ); a plurality of air inlets ( 9 ), each of said air inlets ( 9 ) disposed one between adjacent wind wheels ( 8 ); a base ( 5 ) disposed at the center of said end cover ( 2 ) and connected to said side wall ( 1 ) via said wind wheels ( 8 ); and a center hole ( 7 ) disposed at the center of said base ( 5 ), said center hole ( 7 ) for forming connection to a drive shaft of the external rotor; wherein said side wall ( 1 ), said wind wheel ( 8 ), and said base ( 5 ) are integrally formed by injection molding; a plurality of cross-shaped supporting ribs ( 19 ) is disposed at the bottom of said wind wheel ( 8 ); and said wind wheels ( 8 ) are connected to each other via a plurality of supporting ribs ( 15 ).