Patent ID: 6072261
Filing Date: 2000-06-06
Classification: H02K

Abstract:
An improved motor construction, comprising:a hollow stator base having a substantially cylindrical hub including a central hole; anda hollow stator including a set of silicon steel sheets and a central bore through which said hub is inserted upon assembly of the motor,wherein said hub comprises:a plurality of first upright ribs and a plurality of second upright ribs, a number of said first upright ribs being equal to a number of said second upright ribs and said first and second upright ribs being alternately arranged in a circumferential direction; anda substantially cylindrical lower portion connected to the lower end of each said upright rib, respective pairs of adjacent first and second upright ribs being spaced slightly apart from each other, each said first upright rib having an outwardly extending engaging portion formed on an upper outer surface thereof and each said second upright rib having an outer step portion formed on an outer surface thereof, wherein said set of silicon steel sheets is engaged by and axially held between said outwardly extending engaging portions of said first upright ribs and said outer step portions of said second upright ribs so as to position said stator axially relative to said stator base.