Patent ID: 7906883
Filing Date: 2011-03-15
Classification: H02K

Abstract:
1. An axial gap motor comprising: a rotor rotatable about a rotational axis; and a stator disposed to confront the rotor from at least one side thereof in a rotational axis direction, wherein the rotor comprises: a rotor frame having a plurality of ribs disposed at predetermined intervals in a circumferential direction and extending in a radial direction from the rotational axis, a ring member provided at an inside diameter end of the ribs, and a rim portion provided at an outside diameter end of the ribs; main magnet portions magnetized in the rotational axis direction, each main magnet portion being disposed individually between a pair of ribs adjacent to each other in the circumferential direction; and a protecting portion formed by a tapered inner surface of the rim portion and a tapered outer surface of the ring member, wherein the tapered inner surface is inclined in a manner to gradually reduce an inside diameter of the rim portion, and the tapered out surface is inclined in a manner to gradually increase an outer diameter of the ring member.