A commutating pole 14 provided on a core 10 of the brush motor 41 according to the second example includes a commutating pole column 15 and a commutating pole blade 16. As illustrated in FIG. 8, the commutating pole column 15 is a portion extending radially outward of the rotor 6. In addition, the commutating pole blade 16 is a portion having a curved surface shape (an arc surface shape or a shape similar thereto), expanded in the circumferential direction of the rotor 6 from an outer end of the commutating pole column 15, and is arranged so as to face the magnet magnetic pole 5 in a non-contact manner. Note that the commutating pole 14 does not have the coil 7, and an electric wire of the coil 7 is not wound around the commutating pole 14. In addition, the commutating pole blade 16 can be omitted, and the commutating pole 14 having the same shape as that of the first example may be formed.
FIG. 9 is a view illustrating a magnet angle θM and a blade angle θW of the brush motor 41. In the brush motor 41 of the second example as well, the blade angle θW is preferably set to the magnitude of the magnet angle θM or more (θW≥θM). As a result, the magnet magnetic flux is easily picked up by the teeth 11, and the magnetic flux is effectively utilized.
