MANUFACTURE OF MOTOR HAVING HALL ELEMENT

PURPOSE:To facilitate correct positioning by fitting projections on the side of a motor body into arched slots made with the center thereof at the axial core of a rotor on a board having an electric circuit and Hall elements and turning the board. CONSTITUTION:A motor 10 comprises a main body 12 having stators 14, and a rotor 16. Three projections 18 are formed every 120 deg. on the periphery of one end face of the main body 12. A printed board 20 is equipped with an electric circuit and three Hall elements 28 installed between the stators 14 and the rotor 16. The printed board 20 has an opening 22 to project the rotor 16 at the center and three arched slots 24 made with the center thereof at the shaft of the rotor and the projections 18 installed on the main body 12 are put into the slots 24. The printed board 20 is turned in the direction of the circumference along the slots 24 for positioning to satisfy the specification of the motor 10 and soldered to the projections 18. Thereby motors of no operation loss are made easily and the printed board can be versatilely used.