Motor with rotor having hollow part

  • Inventors:
  • Assignees: Sekio Miyazaki
  • Publication Date: October 02, 1981
  • Publication Number: JP-S56125942-A


PURPOSE:To increase the torque as well as to prevent the defect due to iron loss for the subject motor by a method wherein a hollow section is provided between the outer circumference of the rotor shaft and the outer circumference of the rotor, the outside diameter of the rotor is enlarged and the working radius of the magnetic force generated on the outer circumference is increased. CONSTITUTION:The rotor is hollowed by employing a wheel bushing method in between the rotor outside circumference 3 and the shaft 1 and the outside diameter of the rotor is enlarged. Through this procedure, the working radius of electromagnetic force is increased to the maximum extent, the torque generated at the axis of the rotor is increased by the principle lever the circular path functioning is smoothly performed and an inertia is generated at the outer circumference due to having hollow space in the center of the rotor, thereby enabling to reduce the power consumption at the time of on-load operation.




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    US-5283469-AFebruary 01, 1994General Electric CompanyImpact start assist for an electric motor