Patent ID: 8092195

Claim:
An electric motor comprising: a stator portion; a rotor portion arranged to rotate about a center axis; and a bearing mechanism arranged to rotatably support the rotor portion relative to the stator portion; wherein the rotor portion includes: a rotor holder having a substantially cylindrical shape with a closed end; and a field magnet fixed to an inner circumference of the rotor holder; the stator portion includes: a stator disposed inside of the rotor holder and arranged to generate a torque between the field magnet and the stator, the stator including a stator core, an insulator, and coils; a base portion located below the rotor holder, the stator core being fixed to the base portion either directly or indirectly; and a magnetic member located between the field magnet and the base portion and arranged to generate a magnetic attractive force between the field magnet and the magnetic member; and the magnetic member includes: a substantially cylindrical portion into which a lower end portion of the insulator of the stator is inserted, the lower end portion being a portion of an outer portion of the insulator and opposing the base portion; a flat portion having a substantially annular shape which expands outwardly in a radial direction from a lower edge of the substantially cylindrical portion and opposes a lower edge of the field magnet; and the magnetic member is made of a single piece of material and the substantially cylindrical portion is arranged to extend in an axial direction perpendicular or substantially perpendicular to a direction in which the flat portion extends.