Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1988-04-13
1990-01-02
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310156, 310181, 310268, 310DIG6, 318138, 318254, H02K 1100
Patent
active
048915378
ABSTRACT:
A 1-phase energized disk-type brushless motor or fan motor comprises a single position detecting element located at a position on a printed circuit board corresponding to one of magnetically active conductor portions of one of stator coils of the stator armature. The magnetically active conductor portions include a width substantially equal to the width of each pole of the magnet rotor. A cogging generating magnetic member or plate having a width substantially equal to the pole width is located on the printed circuit board such that it is spaced by about three fourths of the pole width from one of the conductor portions of one of the stator coils so that the magnet rotor may stop with one pole thereof just opposed to the magnetic member, thereby assuring self-starting of the motor and uniform turning torque over the entire rotation of the motor.
REFERENCES:
patent: 3840761 (1974-10-01), Muller
patent: 4115715 (1978-09-01), Muller
patent: 4554473 (1985-11-01), Muller
patent: 4620139 (1986-10-01), Egami
patent: 4642496 (1987-02-01), Kerviel
patent: 4704566 (1987-11-01), Hirano
patent: 4724350 (1988-02-01), Shiraki
patent: 4725752 (1988-02-01), Shiraki
patent: 4733119 (1988-03-01), Shiraki
patent: 4757222 (1988-07-01), Shiraki
Miyao Osami
Shiraki Manabu
Shicoh Engineering Co. Ltd.
Skudy R.
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