Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1994-10-14
1996-04-16
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 45, 310 91, 310237, 310248, 310262, H02K 304
Patent
active
055085776
ABSTRACT:
The provision of an electric rotating machine which can reduce the mechanical and thermal loads applied thereto. Coil arms and coil trunks are provided in roughly parallel orientation to the end faces of an armature core only through insulating rings and insulating spacers. Metal brush is disposed on coil arms, whereby the overall length of the armature can be remarkably shortened. In addition, a commutator, conventionally necessary, can be eliminated, whereby the length of the production process for the armature can be reduced. Moreover, in an arrangement where projections of the upper coil arm are fit in holes of the insulating spacer, as the displacement of the upper coil arm towards the outer periphery is regulated, the length of the axial protrusions of the upper coil arm from the end face of the armature core can be minimized. In addition, as extension portions and of the coil trunks are strongly pressed against and fixed to the side of armature core by fixing members, the resistance to the centrifugal force can be remarkably improved. Furthermore, as the extension portion of the lower coil arm is fit in a recessed part of the insulating spacer, the displacement of the lower coil arm in the axial direction towards the outer periphery can be prevented. Accordingly, the electric rotating machine according to the present invention can withstand more than two times as high a rotational speed as that of the conventional structure.
REFERENCES:
patent: 3209187 (1965-09-01), Angele
patent: 4591750 (1986-05-01), Major et al.
patent: 4833769 (1989-05-01), Tomite et al.
patent: 5130596 (1992-07-01), Umeki
patent: 5443553 (1995-08-01), Shiga et al.
Hayashi Nobuyuki
Murata Mitsuhiro
Niimi Masami
Ohmi Masanori
Shiga Tsutomu
Nippondenso Co. Ltd.
Skudy R.
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