Patent ID: 7415756
Filing Date: 2008-08-26
Classification: F04B,F04C,F25B,H01F,H02K,Y10T

Abstract:
1. A method of assembling a rotor, comprising: providing a magnetizing jig for use in magnetizing magnets for insertion into magnet slots of an iron core portion of a motor rotor having a rotary axis, said magnetizing jig comprising inserting the pre-magnetization magnets into said magnet-receiving slots of said magnetizing jig body of said magnetizing jig; providing a magnetizing coil wound about an outer circumference of said magnetizing jig body; magnetizing the pre-magnetization magnets by supplying electricity to the magnetizing coil wound about the outer circumference of the magnetizing jig body to cause the magnets in said magnet-receiving slots of said magnetizing jig body to become magnetized magnets; fitting said magnetizing jig body to the upper end-face of the rotor such that said center axis of the magnetizing jig body is aligned with the rotary axis of the rotor and said magnet-receiving slots of said magnetizing jig body align respectively with the magnet slots of the iron core portion of the rotor; and inserting magnet push-out pins into the magnet push-out holes and operating the magnet push-out pins to push the magnetized magnets out of said magnet-receiving slots into the magnet slots of the iron core portion of the rotor.