| 摘要 |
PURPOSE:To get rid of leakage current and to improve torque characteristic a tilting factor by loading insulating materials to conductor insertion holes or conductors provided to rotor cores. CONSTITUTION:Conductors 5... are inserted into conductor insertion holes 78... of rotor cores 2 and 3, and synthetic resin is filled and injected into a space section between the conductor insertion holes 78... and the conductors 5.... At that time, insulating tubes 79... are inserted into the conductor insertion holes 78... of the rotor cores 2 and 3 or an insulation coating varnish is applied. When the synthetic resin is filled and injected after inserting the conductors 5... into the conductor insertion holes 78..., the action of insulation upon the conductor insertion holes 78... and the conductors 5... becomes stronger. Accordingly, the leakage current of the conductors 5... is eliminated, and an oxidation state caused by aeration can be prevented to improve durability. |
