Brushless coreless DC motor

Details Brushless coreless DC motor Brushless coreless DC motor

1989-07-24

1990-11-27

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68R, 310268, 310DIG3, 318254, H02K 1100, H02P 600, H02P 602

Patent

active

049738690

ABSTRACT:
The present invention relates to a disc type brushless coreless DC motor which includes a rotor and stator. The DC motor includes a position-detecting sensor installed and secured below an effective coil part of an armature coil, and a single screw having a rounded head is installed at the position 1/5 of a magnetic pole width .+-.n.pi./2 apart from the position-detecting sensor along a clockwise (or counter clockwise) direction when the rotating direction of the rotor is counter clockwise (or clockwise), thereby permitting the achievement of easy production, low cost, and especially light weight, and, further, larger starting torque with a lower starting voltage in the DC motor.

REFERENCES:
patent: 4620139 (1986-10-01), Egami et al.
patent: 4704566 (1987-11-01), Hirano et al.
patent: 4724350 (1988-02-01), Shiraki et al.
patent: 4728833 (1988-03-01), Shiraki et al.
patent: 4733119 (1988-03-01), Shiraki et al.
patent: 4757222 (1988-07-01), Shiraki et al.

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