US Patent 7673715 Geared motor for electric wheelchair

A geared motor for driving an electric wheelchair, which can realize features such as light weight, compact size, low noise, and low vibration at the same time, as well as high performance at low cost. In a driving device of an electric wheelchair for driving a wheel shaft by the power of a motor, the motor is disposed in such a manner that a motor shaft thereof is orthogonal to the wheel shaft. A hypoid speed reduction mechanism having a hypoid pinion and a hypoid gear intervenes between the motor shaft and the wheel shaft.