Patent ID: 8047720
Filing Date: 2011-11-01
Classification: F16C,H02K

Abstract:
1. A bearing structure of an electric motor for a vehicle comprising: an oil take-up disk provided in an oil supply chamber having an oil sump at a lower side and rotating together with a rotor shaft, the oil take-up disk taking up lubricating oil stored in the oil sump to supply said lubricating oil into a bearing provided on the rotor shaft for lubrication of said bearing; an annular first oil return chamber provided on a bearing cover provided on an apparatus outside side surface for storing lubricating oil leaking through a gap between said bearing cover and said rotor shaft; an annular second oil return chamber provided on an outer periphery side of said first oil return chamber and communicated with said first oil return chamber via a hole communicated with said first oil return chamber, said second oil return chamber and said oil supply chamber being communicated with each other via an oil return hole; and a pipe extending from said oil return hole to said oil take up disk.