Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1994-04-13
1995-11-21
LaBalle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310254, H02K 1100, H02K 114
Patent
active
054690056
ABSTRACT:
A brushless motor comprises a rotor, a driving magnet which is rotated integrally with the rotor and a stator core disposed so as to oppose the driving magnet and being wound therearound with a coil. The stator core has salient poles with umbrella portions except for notched portions thereof. A magnetic sensor is disposed in the vicinity of the stator core in a first notched portion prepared by partly removing two corresponding adjacent salient-pole umbrella portions of the stator core for detecting a magnetic pole of the driving magnet. A second notched portion is formed by partly removing two corresponding adjacent salient-pole umbrella portions in a zone of the whole circumferential area of the stator core. The second notched portion is magnetically balanced with the first notched portion.
REFERENCES:
patent: 5194771 (1993-03-01), Otsuki et al.
Asama Kiichi
Ashibe Hiroo
LaBalle Clayton E.
Sankyo Seiki Mfg. Co. Ltd.
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