MOTOR

PROBLEM TO BE SOLVED: To provide a reliable motor of which the thermal stress caused by temperature change of a permanent magnet rotor is reduced, and releasing of bonding on the inner peripheral surface of the permanent magnet at a low temperature and cracking from the magnet surface end at a high...

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Bibliographic Details
Main Authors HARAGA KOSUKE, KAWASAKI TAKAFUMI
Format Patent
LanguageEnglish
Published 27.10.2005
Edition7
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:PROBLEM TO BE SOLVED: To provide a reliable motor of which the thermal stress caused by temperature change of a permanent magnet rotor is reduced, and releasing of bonding on the inner peripheral surface of the permanent magnet at a low temperature and cracking from the magnet surface end at a high temperature are prevented. SOLUTION: A through hole 4 for injecting an adhesive that penetrates an outer peripheral surface 1a is provided from the end surface 1b of the yoke 1 of the rotor. The outlet 4a of the through hole on the outer peripheral surface of the yoke is displaced from an end surface 2b of the permanent magnet toward the inside of the magnet, while the permanent magnet 2 is bonded to a prescribed position. An adhesive layer 3 is formed of the adhesive injected through the through hole inlet of the yoke end surface. The cylindrical permanent magnet 2 is bonded by the adhesive layer 3 to the outer peripheral surface 1a of the yoke 1 of the rotor, and the adhesive layer 3 is provided except for the end region 2a of the permanent magnet. COPYRIGHT: (C)2006,JPO&NCIPI
Bibliography:Application Number: JP20050077151