Patent ID: 8136761
Filing Date: 2012-03-20
Classification: B64C,Y02T

Abstract:
1. A self-propelled wheel apparatus of an aircraft, comprising: a motor; a wave gear drive for reducing speed of an output rotation of the motor; an aircraft wheel that is driven by the reduced-speed output rotation exerted from the wave gear drive; and a one-way clutch for transmitting only the reduced-speed output rotation in a reverse direction of the aircraft from the wave gear drive to the aircraft wheel, wherein the motor, the wave gear drive, the one-way clutch and an axle of the aircraft wheel are arranged coaxially in this order along an axial direction thereof, wherein the wave gear drive has an annular rigid internally toothed gear fixed to an internal peripheral surface of an apparatus housing, a cup-shaped flexible externally toothed gear disposed coaxially on an internal side of the internally toothed gear, and a wave generator having an elliptical outline fitted coaxially into an internal side of the externally toothed gear, and an output shaft of the motor is coaxially linked and fixed to the wave generator, and an output shaft formed in a center of a cup bottom portion of the flexible externally toothed gear is coaxially linked to the wheel axle via the one-way clutch.