To provide a contact structure which can be easily mounted on a small motor and can reduce wear powder, and to improve the service life of a contact of a brush motor in a wide range from high-speed operation to low-speed operation.

A structure for holding a lubricant is provided on the rear surface of a contact of a contact brush, so that the lubricant can be continuously supplied between a contact brush and an commutator to prevent the generation of wear powders. Accordingly, the driving service life of the small-diameter brush motor is improved, thereby achieving the eco-friendly structure.