Brushless motor structure enabling accurate relative positioning

Details Brushless motor structure enabling accurate relative positioning Brushless motor structure enabling accurate relative positioning

1988-03-25

1989-06-13

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 43, 310156, 310184, 310268, 384129, 384420, H02K 516

Patent

active

048395510

ABSTRACT:
A brushless motor is disclosed having a plurality of stator coils disposed circumferentially around a rotatable shaft and a rotor magnet supported to a yoke fixed to the rotatable shaft and opposed to the stator coils. A radial bearing, for radially supporting the shaft, is supported at the center of a coil supporting member supporting the plurality of stator coils. The coil supporting member is formed integral with the radial bearing and is fixed to a casing having a thrust bearing at its center for axially supporting the shaft. Thus, the relative positional accuracy between the stator coil, thrust bearing, and radial bearing can be made high resulting in a stable rotating speed.

REFERENCES:
patent: 2615069 (1952-10-01), Gallagher
patent: 3845339 (1974-10-01), Merkle
patent: 3912956 (1975-10-01), Muller
patent: 4007390 (1977-02-01), Muller
patent: 4174484 (1979-11-01), Schmider
patent: 4517480 (1985-05-01), Muller
patent: 4649306 (1987-03-01), Yamashita
patent: 4757222 (1988-07-01), Shiraki

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