| 摘要 |
PURPOSE:To eliminate the inclination of a cylindrical coil and to obviate the overflow of an adhesive from the bonded surface by providing a supporting surface having an outer diameter substantially equal to the inner diameter of a coil on the outer periphery of a supporting base for supporting the coil and a recess. CONSTITUTION:A stator 2 is secured to a yoke 3. A permanent magnet 5 is mounted on the stator 2. A rotor 1 formed on a rotational shaft 4 is composed of a substantially disc-shaped supporting base 6 secured to the shaft 4, a cylindrical coil 9 and a commutator 7. The base 6 has a circular recess 21 to be engated with the lower part of the commutator 7 on the upper surface and a hole formed on the bottom of the surface 21, the upper peripheral surface has a plurality of projections 23, and a plurality of recesses 24 at an interval in a circumferential direction on the outer periphery. The outer diameter of the base 6 on the outer periphery having no recesses 24 are substantially equal to the inner diameter of the coil 9. The base 6 is bonded fixedly with adhesive to the coil 9. |
