Patent ID: 9054571
Filing Date: 2015-06-09
Classification: B21D,H02K,Y10T

Abstract:
1. A method of manufacturing a rotor for an electric motor, comprising: producing a generally flat metal strip that includes (i) a plate having a first longitudinal end and a second longitudinal end, and (ii) a plurality of protrusions extending from the plate, bending a first section of the plate relative to a second section of the plate along a first imaginary line extending between the first longitudinal end and the second longitudinal end, the second section having the plurality of protrusions extending therefrom in a first direction, bending a third section of the plate relative to the first section along a second imaginary line extending between the first longitudinal end and the second longitudinal end such that the third section extends in a second direction opposite the first direction, rolling the plate about an imaginary axis such that the plurality of protrusions extend inwardly toward the imaginary axis, joining the first longitudinal end of the plate with the second longitudinal end of the plate, and attaching a hub to the plurality of protrusions, the hub being configured to receive a drive shaft of the electric motor.