Structure for attaching a permanent magnet to a rotating shaft

Details Structure for attaching a permanent magnet to a rotating shaft Structure for attaching a permanent magnet to a rotating shaft

1976-03-25

1977-11-29

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 43, 310261, H02K 2108

Patent

active

040607453

ABSTRACT:
In order to minimize stresses on a circular rotatable permanent magnet attached to a shaft in a dynamoelectric machine, the shaft of the machine is provided with a circular support portion having an outer supporting surface and a shoulder at one end wherein a shouldered ring secured to the support portion cooperates with the shoulder on the support member to axially retain the magnet on the shaft. Rotational slippage of the magnet on the shaft is prevented by a pin which is engaged with both the magnet and the shouldered ring or, alternatively, by a key inserted between the support portion and the magnet. A flexible material is interposed between the supporting surface and the magnet in order to reduce vibration and motion of the magnet on the shaft.

REFERENCES:
patent: 2190956 (1940-02-01), Tognola
patent: 2269651 (1942-01-01), Crocker
patent: 2719931 (1955-10-01), Kober
patent: 3121814 (1964-02-01), Kober
patent: 3320453 (1967-05-01), Kober
patent: 3979821 (1976-09-01), Noodleman

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