| 摘要 |
PURPOSE:To allow to cool a connecting conductor stud and an interconnection bar by providing duplicated structure inside of a connecting conductor coupling between a central hole conductor of a rotor axis and a field coil. CONSTITUTION:A connecting conductor stud 6 connecting an intermediate connection bar 13 of a field coil 7 with a central hole conductor 4 is inserted via an insulator cylinder 14 into a hole of an axis. At the axial center of the stud 6, a cooling hole 6a, wherein an insulator hole 17 is inserted through a gap thereof is provided. At the lower end of the hole 17, a ventilation hole 17a which communicates with the gap is provided. An insulator cap 12 has a ventilation hole 12a. The stud 6 and a nut 15b also have ventilation holes 6a and 6c and furthermore the bar 13 has a ventilation hole 13a. |
