| 摘要 |
PURPOSE:To simplify the structure and to improve the operation efficiency, by employing only one position detecting element comprising a Hole element or a coil and integrating the entire control circuit including the detection element thereafter assembling the integrated circuit into a motor body. CONSTITUTION:A steel board serviceable as a magnetic path is sticked onto a substrate 2, then a fan type armature coil 6 is sticked thereon. Armature coils 10a-10c are arranged on the magnetic disc 7 serviceable as a magnetic path. A tube 3 is planted on the substrate 2 and a rotor shaft 1 is supported rotatably by a bearing 1a. Power conduction control circuits for the armature coils 10a-10c are integrated and mounted on the projecting section 2a of the substrate 2 as shown at 29a in the drawing. Central section of a soft steel disk 4 is secured to the rotary shaft 1 and an annular field magnet rotor 5 is sticked onto the rear face. A Hole element 11a is contained in a part of IC 29a and mounted between adjoining armature coils 10a, 10b while facing with a position detecting magnet rotor 8. By such arrangement, the size of motor is reduced and the operational efficiency is improved. |
