Reduced Weight Rotor Having Structural Integrity

摘要

A reduced weight rotor design for use in an electric motor where the reduced weight rotor maintains its structural integrity. The reduced weight rotor includes a center hub, an outer ring having lobed portions extending inwardly towards the hub and located adjacent to each location of a magnetic pole pairing, and spokes connecting the hub to the outer ring where the spokes are arranged in a number of pairs equal to the total number of the magnetic pole pairings and wherein each spoke of a given pair does not cross each other spoke of the given pair but does cross a spoke of an adjacent pair thereby forming a one cross spoke pattern.

主权项

1. A reduced weight rotor for a permanent magnet electric motor, the reduced weight rotor comprising:
a hub; an outer ring configured to hold multiple magnetic pole pairings around a periphery of the outer ring, the outer ring having one lobed portion located adjacent to each one of the multiple magnetic pole pairings, each lobed portion extending inwardly toward the hub; and multiple pairs of spokes, a total number of the multiple pairs of spokes being equal to a total number of the multiple magnetic pole pairings, wherein each individual pair of the multiple pair of spokes is configured such that,
each spoke of the individual pair is connected at one end to one of the outer ring lobed portions not connected to any other spoke and at another end to the hub thereby forming a generally tangential line to the hub, and whereina counterclockwise spoke of the individual pair and a clockwise spoke of the individual pair do not cross, whilethe counterclockwise spoke of the individual pair and a clockwise spoke of another pair of the multiple pair of spokes located counterclockwise to the individual pair do cross,thereby forming a one cross spoke pattern of the multiple pair of spokes.