| 摘要 |
PURPOSE:To increase the durability and to remove a noise by forming a brushless motor of a stator having a coil wound on a magnetic unit, and a rotor having a magnet of specific pole direction opposed to one surface of the coil. CONSTITUTION:A brushless motor is constructed by engaging the roller bearing 21 of a rotor 15 with the guide slot 20 of a rail 10c at both sides of an annular stator 8. A coil 11 is wound on the magnetic unit 10 of the stator 8, and a magnet 13 having a pole direction in the direction crossing the current direction X of the coil 11 oppositely to one surface 11a of the coil 11 is provided on a high magnetic permeable unit 18 of the rotor 15. Thus, the upper surface 11a of the coil 11 is placed in a closed magnetic path 17, the coil 11 is affected by a force in Y0 direction, and the rotor 15 is movably driven in the direction of an arrow Y by the force of the reaction. |
