Motor

A motor comprising:

• a rotor rotatable about a central axis as a rotation axis;
• and
• a stator located on at least one side in an axial direction of the rotor;
• wherein
• the rotor includes
• a plurality of side magnets whose magnetization direction is a circumferential direction, the plurality of side magnets being arranged in the circumferential direction, and
• a plurality of core pieces arranged between the side magnets in the circumferential direction;
• the core piece includes
• a core piece main body that is in close contact with side surfaces of the side magnets on a pair of side surfaces facing both sides in the circumferential direction, and
• an extended tooth portion located on one side in the axial direction of the core piece main body;
• and
• the extended tooth portion protrudes to one side in the axial direction with respect to an axial surface of the side magnet, and has a larger width dimension in the circumferential direction than a width dimension in the circumferential direction of the core piece main body, wherein in the extended tooth portion, the width dimension in the circumferential direction is continuously increased toward a radially outer side.

A motor comprising:

• a rotor rotatable about a central axis as a rotation axis;
• and
• a stator located on at least one side in an axial direction of the rotor;
• wherein
• the rotor includes
• a plurality of side magnets whose magnetization direction is a circumferential direction, the plurality of side magnets being arranged in the circumferential direction, and
• a plurality of core pieces arranged between the side magnets in the circumferential direction;
• the core piece includes
• a core piece main body that is in close contact with side surfaces of the side magnets on a pair of side surfaces facing both sides in the circumferential direction, and
• an extended tooth portion located on one side in the axial direction of the core piece main body;
• and
• the extended tooth portion protrudes to one side in the axial direction with respect to an axial surface of the side magnet, and has a larger width dimension in the circumferential direction than a width dimension in the circumferential direction of the core piece main body, wherein in the extended tooth portion, the width dimension in the circumferential direction is continuously increased toward one side in the axial direction.