| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor for an AC generator which reduces uncomfortable noise by forming a multidegree free vibration system of claw magnetic poles, reinforcing substances to which magnets are stuck, and suppressing resonance of the claw magnetic poles for securing supporting intensity for the magnets. SOLUTION: The rotor is provided with a plurality of reinforcing substances 32, and a plurality of magnets 31 are stuck to both wing portions 32b of respective reinforcing substances 32 and arranged on both circumferential sides of the claw magnetic poles 22b, 23b. The reinforcing substances 32 are composed of tabular fitting portions 32a and wing portions 32b formed on both sides of the fitting portions 32a and being approximately U-shaped. The fitting portions 32a are counterposed to the internal peripheral wall surfaces of the magnetic poles 22b, 23b, and the wing portions 32b are arranged so as to be on both circumferential sides of the magnetic poles 22b, 23b. Circumferential center parts of the fitting portions 32b are stuck with resin 40 to the internal peripheral wall surfaces of the magnetic poles 22b, 23b, and a multidegree free vibration system of the magnetic poles 22b, 23b and the reinforcing substances 32 to which the magnets 31 are stuck is formed.
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