Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-08-25
1991-11-05
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310216, 310262, H02K 2112, H02K 100, H02K 122
Patent
active
050633180
ABSTRACT:
The problem of preloading a rotor assembly (14) in a dynamoelectric machine (10) of the permanent magnet type is solved by providing a hub (20) having a plurality of outwardly opening, annularly spaced slots (22, 24). The slots are outwardly converging and separated by outwardly diverging partition portions (26) of the hub. A plurality of outwardly converging permanent magnets (30) respectively are disposed in the slots. A containment shell (32) surrounds the hub. Wedges (36) are inserted between the base of each permanent magnet and the bottom (24) of its respective slot for loading the permanent magnets radially outwardly toward the containment shell and against the sides of the slots, thereby to place the partition portions of the hub under tension in a static condition of the rotor assembly.
REFERENCES:
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patent: 4417168 (1983-11-01), Miller et al.
patent: 4464596 (1984-08-01), Miller et al.
patent: 4588914 (1986-05-01), Heyne
LaBalle C.
Stephan Steven L.
Sundstrand Corporation
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