ROTOR WITH END RING AND ELECTRIC MOTOR

摘要

An electric motor for high speed operation use and a rotor which enables use of common parts with electric motors for low speed operation use and which thereby enables reduction of the manufacturing costs. The rotor is provided with a shaft, a rotor core which is fastened to the shaft at the outside in the radial direction and has a first end face at one end in the axial direction and a second end face at the other end in the axial direction, a plurality of conductors which are arranged at the rotor core, and a pair of end rings which are respectively arranged adjoining the first end face and the second end face and which short-circuit the plurality of conductors with each other. The shaft has an outer circumference, while the end rings have outer circumferences which are arranged concentrically with respect to the outer circumference of the shaft.

主权项

1. A rotor of an electric motor, comprising:
a shaft; a rotor core fixed radially outside of the shaft and having a first end face at one end in the axial direction and a second end face at the other end in the axial direction; a plurality of conductors arranged at the rotor core, each of the plurality of conductors extending from the first end face to the second end face; and a pair of end rings, one of which is arranged adjacent to the first end face, and the other of which is arranged adjacent to the second end face, the end rings short-circuiting the plurality of conductors with each other, wherein the shaft has an outer circumference centered about an axis of rotation, the end ring has an outer circumference arranged concentrically with respect to the outer circumference of the shaft.