Miniature rotary electric machine

Details Miniature rotary electric machine Miniature rotary electric machine

1979-07-09

1982-04-06

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310154, H02K 122

Patent

active

043238068

ABSTRACT:
The present invention relates to a miniature rotary electric machine and more particularly to a coreless type of rotary electric machine. The coreless rotary electric machine includes a rotor coil formed as a coil body in a form of cup with its one end being open. The coil body has, on its circumference, a coil part wound with a predetermined inclination. An end connection wire part is provided to make a connection between adjacent windings only at the one side end of the inclined coil part so that each two adjacent windings of the inclined coil part are connected each other successively by the end connection wire part. According to a feature of the present invention, the inclined coil part and the end connection wire part are formed by coil assembly portions each comprising a plural number of groups of windings turned at the same position in layers with the same number of turns. The coil assembly portions form together a coil assembly of large winding capacity.

REFERENCES:
patent: 4103196 (1978-07-01), Saito et al.

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