Magnetic flux shield and enhancer for brushless motors

Details Magnetic flux shield and enhancer for brushless motors Magnetic flux shield and enhancer for brushless motors

1985-09-27

1987-01-20

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68R, 310268, H02K 1100

Patent

active

046381970

ABSTRACT:
A magnetic flux shield and enhancer for brushless motors, with a plurality of clips having orthogonal legs in flux-conducting relationship to the rotor and permanent magnets of the motor. The permanent magnets are affixed to an inner circumferential surface of the rotor. Each of the clips receives a Hall sensor for activation by the magnets as they pass by. A first leg of the clip is configured so as to concentrate the flux from the magnets to an associated Hall sensor, while shielding the Hall sensor from flux emanating from the stator assembly of the motor. A second leg of the clip, connected to the first leg, provides a path for the flux through the rotor for return to the magnet from which it originated.

REFERENCES:
patent: 3548224 (1970-12-01), Dittrich et al.
patent: 4115715 (1978-09-01), Muller et al.
patent: 4286184 (1981-08-01), Kogler
patent: 4574211 (1986-03-01), Muller et al.

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