Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-11-20
2000-01-25
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310271, H02K 346
Patent
active
060182091
ABSTRACT:
An upper coil bar and lower coil bar are disposed in slots of an armature core. The upper coil bars have upper coil-end sections which extend radially from the outer periphery of the armature core and together form a commutator surface with which a brush member is in contact. The upper coil-end sections and coil-end sections of the lower coil bars are retained by a fixing cap fixed between a shaft of the rotary electric machine and the upper coil-end sections, and also by a spacer disposed between the upper coil-end sections and the lower coil-end sections so that the commutator surface can be maintained smooth even under conditions of thermal expansion or high-speed operation.
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Katoh Masahiro
Niimi Masami
Shiga Tsutomu
Nippondenso Co. Ltd.
Ramirez Nestor
Tamai Karl I. E.
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