| 摘要 |
In the present invention, at least three axial through holes arranged so as to be circumferentially equidistant are provided to a laminated steel rotor plate and rotor end plates, the laminated steel rotor plate and the rotor end plates being fixed to each other with three rivets passed through the axial through holes. A balance weight comprising a laminated metal plate on one side is fixed to a rotor end plate on one side by two rivets of the three rivets, and a balance weight comprising a laminated metal plate on the other side is integrated by swaging to form protrusions, and is fixed to the rotor end plate on the other side by the remaining one rivet, and is positioned relative to the rotor end plate of the other side by the protrusion being fitted to recesses or through holes provided to the rotor end plate of the other side. |
