Patent ID: 11962196
Assignee: HYUNDAI KEFICO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A rotor for a motor, comprising:
a magnet coupled to a shaft to surround an outer surface of the shaft and having opposite-polar magnetic portions circumferentially alternately arranged;
a first fixed ring fixed to the shaft to surround an outer surface of the shaft, disposed in contact with an upper portion of the magnet, and having a first coupling portion at a lower end being in contact with a top of the magnet to prevent rotation relative to the magnet; and
a second fixed ring fixed to the shaft to surround the outer surface of the shaft, disposed in contact with a lower portion of the magnet, and having a second coupling portion at an upper end being in contact with a bottom of the magnet to prevent rotation relative to the magnet,
wherein a protrusion protruding from the first fixed ring or the second fixed ring and a support recessed inside the first fixed ring or the second fixed ring are alternately disposed at each of the first coupling portion and the second coupling portion,
the protrusion of the first coupling portion is positioned to circumferentially correspond to the support of the second coupling portion, and
the support of the first coupling portion is positioned to circumferentially correspond to the protrusion of the second coupling portion.