To enable mechanization and automation in production and to improve productivity and reliability by providing a movable electric part to be insert- molded when a flange, a support part, and a brush holding part are formed.

For a brush holder 13, a brush storage part 13a and a lead wire storage chamber 13b adjacent thereto are formed, a brush 13 is so constituted as to slide in contact with slip rings 30a and 30b by means of pressing force of a brush spring 7. A lead wire 17a of the brush 17 is led in the horizontal direction from the side face of the brush 17 and connected to a respective terminal 15 through the inside of the lead wire storage chamber 13b. Each terminal 15 is provided with a V-letter shaped cut-in, and the lead wire 17a is pushed into the V-letter shaped cut-in and welded in another process. A cover 18 covering the terminal 15 connecting the wire 17a is provided with a protrusion, and the protrusion is engaged with a engaging part provided at each terminal 15 to prevent fall out on use when the cover 18 covers the terminal 15.