Patent ID: 8604662

Claim:
A windshield wiper motor comprising: a motor yoke by which an armature shaft is rotatably supported; a four-pole magnet fixed on an inner surface of the motor yoke; an armature core having a plurality of coil-wound portions each arranged in a rotational direction and fixed to the armature shaft; a commutator having a plurality of commutator bars each arranged in the rotational direction and fixed to the armature shaft; a winding wound around the coil-wound portions of the armature core and electrically connected with the commutator bars; a first brush slidingly contacted with the commutator; a second brush slidingly contacted with the commutator, wherein the second brush is shifted from the first brush by 90 degrees, and wherein the second brush supplies a driving current to the winding; a third brush slidingly contacted with the commutator; and a brush holder in which the first brush and the second brush are stored, wherein the brush holder includes a pair of flat portions opposite to each other and a pair of joint portions between the flat portions, wherein the first brush and the second brush are arranged in a vicinity of one of the joint portions, wherein a first opposite brush is arranged away from the first brush by 180 degrees, wherein a second opposite brush is arranged away from the second brush by 180 degrees and away from the first opposite brush by 90 degrees in a vicinity of the other of the joint portions, and wherein the third brush is arranged on the other side of the pair of joint portions, and a third opposite brush is arranged away from the third brush by 180 degrees.