Patent ID: 7939985

Claim:
An electric motor comprising: a stator unit including an annular armature; and a substantially columnar rotor unit located in the armature; wherein the rotor unit includes a rotor core having a plurality of magnet holding holes arranged along an outer surface of the rotor core and extending along a central axis of the armature, a plurality of field magnets located in respective ones of the magnet holding holes, and a first end plate arranged on a first axial end surface of the rotor core such that the first end plate at least partially covers openings of the magnet holding holes on the first axial end surface; the rotor core has a plurality of end plate fixing holes arranged on the first axial end surface; the first end plate has a body and a plurality of bent portions protruding from the body toward the rotor core; the first end plate is fixed to the first axial end surface by the bent portions being arranged in respective ones of the end plate fixing holes such that cut surfaces of the bent portions contact inner surfaces of the end plate fixing holes; the end plate fixing holes have a substantially circumferentially elongated shape; and each of the bent portions includes a plurality of slanting portions and a single planar portion.