Patent ID: 6922004
Filing Date: 2005-07-26
Classification: H02K

Abstract:
1. An assembly comprising: an axial flux electric motor comprising a stator and a rotor, said stator and said rotor axially displaced from each other; a rotor shaft coupled to said rotor, said rotor shaft including a shoulder portion; a rotor support bearing for rotationally supporting said rotor shaft; a driveline support for supporting a hub rotatably attached to a housing by a bearing, said hub supporting a wheel; a case attached to said housing configured to support said stator and a speed reduction transmission; said speed reduction transmission comprising a sun element, at least two planetary elements and an outer ring element attached to said case; wherein said rotor shaft is coupled to said hub through said speed reduction transmission; wherein said rotor shaft, said speed reduction transmission, and said hub are supported solely by said rotor support bearing, said driveline support bearing and said outer ring element of the case; and wherein said shoulder portion of said rotor shaft abuts an end of said rotor support bearing such that a desired air gap is maintained between said rotor and said stator.