Brushless DC motor structure

Electrical generator or motor structure – Dynamoelectric – Rotary

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Details

310128, 310259, 310 67R, 310216, 310156, 310254, 310 42, 310179, 310261, H02K 124, H02K 1500, H02K 118, H02K 112, H02K 100

Patent

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061571121

ABSTRACT:
A brushless DC motor, having a rotor with a cylindrical rotor magnet supported rotationally by a shaft held by bearings mounted on a substantially planar base plate, and a stator supported by the base plate, and including a plurality of radially spaced salient poles holding stator coils formed by windings of magnet wire. Opposing surfaces of the rotor and each salient pole are defined by a first surface of a magnetic core of the salient pole, which is received in a bobbin, and a second surface of the magnetic core orthogonal to the first surface, and the rotor magnet has permanent magnet poles forming a first surface opposing the first surface of the magnetic core, and a second surface opposing the second surface of the magnetic core. A tip of each magnetic core is received through a hole formed in the base plate.

REFERENCES:
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patent: 3859548 (1975-01-01), Morley et al.
patent: 4529900 (1985-07-01), Uzuka
patent: 4639648 (1987-01-01), Sakamoto
patent: 4851731 (1989-07-01), Saotome et al.
patent: 5214337 (1993-05-01), Ishibashi
patent: 5402028 (1995-03-01), Koeber et al.
patent: 5493161 (1996-02-01), Uno et al.
patent: 5701047 (1997-12-01), Johnson

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