Coils of coreless motor and method of manufacturing the same

Electrical generator or motor structure – Dynamoelectric – Rotary

Patent

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Details

310154, 310268, H02K 300

Patent

active

044764090

ABSTRACT:
A coil for use in a coreless motor comprises a flat disc shaped portion in which a coil wire extends between two peripheral points which are spaced 180.degree., coil turns of the coil being successively displaced in a peripheral direction, and a cylindrical portion in which the wire is disposed to interconnect portions thereof at the peripheral edge.
The coil is manufactured by a winding machine having a winding head including a first disc and a freely rotatable second disc. The second disc has a diameter slightly larger than that of the first disc and acts as a guide. Each turn of the coil is wound across the upper surface of the winding head and about the same for about 180.degree.. Adjacent turns are successively displaced a little in the peripheral direction. After winding, the coil is shaped into a cup shaped configuration.

REFERENCES:
patent: 2503752 (1950-11-01), Malchus
patent: 2550663 (1951-05-01), Bechberger
patent: 3191081 (1965-06-01), Faulhaber
patent: 4093882 (1978-06-01), Furuta
patent: 4320319 (1982-03-01), Takahashi
patent: 4327304 (1982-04-01), Aoki

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