Patent ID: 8067870

Claim:
An outer rotor type motor comprising: a stator and a rotor that is rotatably arranged on an outer peripheral side of the stator so as to face the stator, wherein the rotor comprises a cylindrical rotor frame that is opened at one axial end thereof, and a hollow cylindrical magnet having a substantially uniform thickness and attached to an inner surface of the rotor frame, wherein the inner surface of the rotor frame has a predetermined inner diameter, wherein the magnet has a cylindrical joining portion being in contact with the inner surface of the rotor frame, and a cylindrical protruding portion that protrudes out from the open end of the rotor frame in such a manner that the cylindrical protruding portion tapers out towards its protruding end, and wherein an outer diameter of the protruding portion of the magnet is larger at its protruding end than the inner diameter of the open end of the rotor frame, and the joining portion of the magnet is in contact with at least part of the inner surface of the rotor frame along a range extensive from the open end of the rotor frame towards the other end thereof.