Patent ID: 7737587

Claim:
A motor comprising: a stator portion including an armature; a rotor portion including a field magnet which generates, along with the armature, a torque centered about a central axis; a bearing mechanism rotatably supporting the rotor portion with respect to the stator portion centered about the central axis; a busbar unit arranged at one axial side of the motor to connect the armature to an external power source; and a housing accommodating therein the stator portion, the rotor portion, the bearing mechanism, and the busbar unit; wherein the armature includes: a plurality of teeth arranged in a circumferential direction centered about the central axis; an insulator arranged to cover a surface of each tooth; and a plurality of coils defined by a wire wound around corresponding teeth via the insulator; the busbar unit includes: a relay arranged to operate a control drive current conducted to the armature from the external power source; a plurality of first busbars arranged to connect the coils and the external power source; a plurality of second busbars arranged to connect the coils and the relay; and a busbar holder arranged to retain the first busbars and the second busbars in a non-contact manner between the first busbars and the second busbars; each first busbar includes at least one first terminal at which one end of each wire forming the coils is connected; each second busbar includes at least one second terminal at which another end of each wire forming the coils is connected; and the busbar holder has a substantially annular shape or a substantially arcuate shape centered about the central axis and is made of an insulating material.