Wheel assembly with integral electric motor
US7622836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2008 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Jul 7, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2007/0092
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The subject invention provides a wheel assembly (20) having a spindle (26) for attachment to a vehicle along a rotational axis (R). An electric motor (22) is disposed radially about the spindle (26) and includes a stationary stator (34) and a rotor (36) rotatable about the rotational axis (R) relative to the stator (34). A rotor support (40) is disposed about the spindle (26) and includes a collar (42) rotatably supported by at least one rotor support bearing (46) on the spindle (26). The rotor support (40) includes a flange (44) disposed within a predetermined axial distance (D) and extending radially outward from the collar (42) to support the rotor (36). A planetary gear system (62) interconnects the rotor support (40) and a wheel drive (52) for reducing rotational speed of the rotor (36) and increasing the torque of the wheel assembly (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.