Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-01-29
1999-03-23
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310206, 310207, 310179, 310260, H02K 304
Patent
active
058864440
ABSTRACT:
The present invention is characterized in that a rotary machine attempts to lower the resistance of each coil and realize improvement of efficiency and miniaturization of a motor by shortening the end portion of a coil to be inserted into a stator, and the constitution thereof is that the coil end portion of a stator coil has a shape that a conductor raised and looped back from a slot provided in the core on the rotor side is closer to the end face of the aforementioned core than a conductor raised and looped back in the aforementioned slot on the opposite side of the rotor, and the aforementioned constitution has a stator coil having a loopback shape passing a location other than above the adjacent slot surface.
The present invention is also a method for manufacturing a rotary machine characterized in that the coil end portion of a stator coil is held horizontally by a holding member, and the holding member is rotated by finely moving the rotational center from the rotor side to the opposite side of the rotor with the slot insertion portion provided in the core restricted, and the aforementioned coil end portion is formed in the loopback shape.
REFERENCES:
patent: 2135315 (1938-11-01), Walters et al.
patent: 2138292 (1938-11-01), Casale
Enomoto Yuji
Hiramatsu Hiromichi
Taneda Yukinori
Yamamoto Noriaki
Hitachi , Ltd.
Ramirez Nestor
Williams Timothy A.
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