| 摘要 |
PURPOSE:To eliminate the fluctuation of a bobbin with respect to a magnetic path piece by contacting or pressing in contact the collar of the bobbin with a bearing unit through a rib-shaped projection formed on either one of the bearing units for supporting the shaft of a rotor, at the side of the bobbin. CONSTITUTION:A rib-shaped projections 11a are formed on both positions near upper and lower positions of an inserting hole 10 at one end of the outer periphery of a collar 9 which constructs a synthetic resin bobbin 7. Bearing units 13a, 13b are associated with the shaft 5 of a rotor after the bobbin 7 is inserted fully to a magnetic path piece in a stator core 1. In this case, the end of the projection 11a is contacted or pressed in contact with the sides of units 13a, 13b at the side of the bobbin 7. In this manner, the bobbin can be secured without fluctuation. |
