To provide a very inexpensive brush structure of a minimum space, which is constituted by using a wire material for a brush and is worked by an NC vender, in order to constitute the brush at low cost without degrading performance, while solving the problem that an expensive precise metal mold is used for pressing with a progressive die in manufacturing the brush of the micro motor, a certain brush width is required so that a pressing metal mold is not damaged and efficiency of the micro motor is deteriorated since space of a bush structure part is large.

The brush of the micro motor is constituted of only a very thin wire material.