Patent ID: 6927523

Claim:
A brush device including a brush, a brush holder and a spring, the brush being constituted of a brush arm portion and a brush base portion, the brush arm portion being made of carbon, formed in substantially arc shape and including a sliding face that provides electric conduction with contacting a commutator, the brush base portion being attached so as to rotate around a supporting shaft, the brush being installed on the brush holder in such a manner that the sliding face thereof contacts the commutator with its rotation around the supporting shaft, the spring pressing the brush against the commutator, wherein a guide portion is formed at part of said brush base portion and a recess portion is formed at said brush holder, in said recess portion, one end portion of a winding portion of said coil-shape spring is held at said brush base portion and the other end portion thereof is held at said brush holder, said coil-shape spring is disposed such that its longitudinal direction conforms to a direction of the face of the brush holder, and said coil-shape spring and said brush are disposed on a substantially identical face having a state where said winding portion of the spring is placed along a shape of at least part of said guide portion and said recess portion.