A motor device including a pair of motor units and a driven member meshed
with rotary gears of the pair of motor units to drive the driven member,
the motor units each including a rotary magnet that is cylindrical and
magnetized so as to have different magnetic poles in turn along the
circumferential direction, a rotary gear having a plurality of teeth, the
rotary gear rotating about the rotation axis of the rotary magnet together
with the rotary magnet, and a stator member having a plurality of outer
magnetic poles that are arranged on the outer periphery of the rotary
magnet and an inner magnetic pole that is arranged on the inner periphery
of the rotary magnet and is opposed to the outer magnetic poles, the
plural outer magnetic poles and the inner magnetic pole being excited by a
coil.
