Permanent-magnet type dynamoelectric machine rotor

Details Permanent-magnet type dynamoelectric machine rotor Permanent-magnet type dynamoelectric machine rotor

1991-02-20

1992-08-18

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310261, 310262, H02K 2112, H02K 122, H02K 127, H02K 128

Patent

active

051402106

ABSTRACT:
A rotor for a permanent magnet-type dynamoelectric machine comprises a rotor shaft and a rotor magnet assembly including a plurality of permanent magnet segments each having a chamferred axially-extending outer side edges defining, together with the chamferred outer side edge of the adjacent magnet segment, a plurality of axial recesses when the magnet segments are mounted around the rotary shaft. The machine rotor further comprises a nonmagnetic support tube member for contacting and supporting the outer circumferential surface of each of the permanent magnet segments of the rotor magnet assembly, the support tube member having a plurality of inwardly extending projections for contacting and supporting the chamferred side surfaces of the magnet segments. The nonmagnetic support tube member may comprise a pair of metallic cup-shaped member having a substantially tubular members disposed around the rotor magnet assembly and a radially extending end plate member attached to the rotary shaft. Two cup-shaped members may be arranged in an opposing relationship so as to accommodate the rotor magnet assembly therein.

REFERENCES:
patent: 4543506 (1985-09-01), Kawada et al.
patent: 4591749 (1986-05-01), Gauthier et al.
patent: 4639627 (1987-01-01), Takekoshi et al.
patent: 4678954 (1987-07-01), Takeda et al.
patent: 4697114 (1987-09-01), Amemiya et al.
patent: 4742259 (1988-05-01), Schaefer et al.
patent: 4855630 (1989-08-01), Cole

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