| 摘要 |
PURPOSE:To reduce the thickness and the size of a brushless motor by securing a coil to a substrate by resin molding to dispose in a through hole formed at the substrate. CONSTITUTION:A stator is formed of a printed board 9 and a coil 2 molded with the board 9, a rotor is formed of a yoke 4, a magnet 3 and the yoke 7 at the lower end of a rotational shaft 6, thereby constructing a brushless motor. In this case, the coil 2 is integrally molded with the board 9 fixedly to a through hole 11 of a predetermined shape formed at the board 9 by resin molding 8. Thus, the thickness d3 of the board 9 is contained in the thickness of the coil 2, the entire thickness of the motor is reduced to increase the torque. |
