FIELD: electrical engineering.
SUBSTANCE: invention relates to the electrical equipment. Rotor comprises permanent magnet (13), which is arranged around rotor shaft (11), retaining ring (14), which is pressed around outer side of permanent magnet (13) from one end of rotor shaft (11) so as to keep permanent magnet (13) tightly to rotor shaft (11), and end plate (12), which is provided adjacent to permanent magnet (13) in axial direction of rotor shaft (11) and directs pressed retaining ring (14), while maintaining flat contact with its inner circular surface, towards permanent magnet (13), while forcing retaining ring (14) to expand when retaining ring (14) moves from one end of rotor shaft (11) to the other end of rotor shaft (11).
EFFECT: minimization of concentration of mechanical stress in retaining ring at press fit, at that maintaining electric characteristics at simple configuration.
9 cl, 15 dwg
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