Patent ID: 7990004

Claim:
A reduction drive device, comprising: an electric motor attached to a casing and capable of outputting torque; a reduction mechanism supported by the casing, to reduce the speed of and transmit the rotational output of the electric motor; a distribution mechanism supported by the casing, to distribute the rotational output reduced by the reduction mechanism to a pair of output shafts; internal functional parts of the electric motor partly overlapping the distribution mechanism when seen in a rotation radius direction; the reduction mechanism having a rotary shaft disposed between the electric motor and the distribution mechanism, and first and second reduction mechanisms formed between the electric motor and the rotary shaft and between the rotary shaft and the distribution mechanism, respectively; the internal functional parts of the electric motor including a rotor including a rotor core and a stator; and the rotary shaft of the reduction mechanism partly overlapping at least the rotor core of the electric motor in the rotation radius direction.