Brushless D.C. motor

Details Brushless D.C. motor Brushless D.C. motor

1980-01-14

1982-11-02

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310157, 310268, 310 90, H02K 104

Patent

active

043575501

ABSTRACT:
The invention relates to a collectorless D.C. motor with a horizontal air gap, particularly a low-speed motor for the direct drive of recording and/or reproducing devices. As per invention, the rotor axle is supported within an axial bore of the motor housing, with the motor housing made of plastic. The stator winding and the magnetic return structure are fixedly arranged on the motor housing which is also provided with bores for attaching the motor on installing it into the device. Obviating of machining sequences, simplification of assembly and direct support of the rotor axle in the motor housing all contribute to a reduction in manufacturing cost.

REFERENCES:
patent: 3354332 (1967-11-01), Bonnefoy
patent: 3678314 (1972-07-01), Carter
patent: 3932069 (1976-01-01), Giardini et al.
patent: 4072874 (1978-02-01), Arnold, Jr.
patent: 4079277 (1978-03-01), Osanai
patent: 4208784 (1980-06-01), Kince

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