Motor structure

Details Motor structure Motor structure

1996-07-05

2000-01-11

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310190, 310254, 310256, 310257, H02K 106, H02K 112, H02K 2114

Patent

active

06013965&

ABSTRACT:
This invention is to provide a low-cost structure that a cogging torque and a torque ripple are small and a stable rotation is provided in a radial gap type motor.
A portion that stator pole teeth 37 to become interpoles are provided between stator poles 38 and a plurality of stator pole teeth 37 are not continuously provided between the partial stator poles 38 is provided. As a result, in this invention, a magnetic attraction force between the stator pole teeth 38 and the rotating pole 9 of a rotor 6 is stronger in the case that the pole teeth 37 are provided than in the case that the pole teeth 37 are not provided.
Accordingly, the rotational shaft 12 of the rotor 6 is supported at three points of points P, Q and R of the bearing cylinder 4, and a rotary force is received at the point P as a center. As a consequence, the rotational shaft 12 is rotated with less contact friction with the bearing cylinder 4.

REFERENCES:
patent: 4166226 (1979-08-01), Estkowski
patent: 4394595 (1983-07-01), Weaver
patent: 4755698 (1988-07-01), Frister et al.
patent: 4975607 (1990-12-01), Hara et al.
patent: 5008573 (1991-04-01), Beppu et al.
patent: 5057725 (1991-10-01), Kasai et al.
patent: 5107159 (1992-04-01), Kordik
patent: 5331245 (1994-07-01), Burgbacher et al.
European International Search Report, Mar. 14, 1995.

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