Motor bearing arrangement and electric motor using the same

Details Motor bearing arrangement and electric motor using the same Motor bearing arrangement and electric motor using the same

1998-05-14

1999-12-14

Enad, Elvin

Electrical generator or motor structure

Dynamoelectric

Rotary

310 68R, 310268, 310 67R, H02K 516

Patent

active

060021888

ABSTRACT:
In a bearing arrangement including a thrust bearing and a radial bearing, the thrust bearing includes a first thrust plate which is fixedly secured to a stator plate, and the radial bearing is integrally attached to the first thrust plate of the thrust bearing. Because the radial bearing is directly attached to the first thrust plate of the thrust bearing, the perpendicularity of the radial bearing with respect to the thrust support surface can be easily ensured. Also, the first thrust plate normally consists of a highly rigid member, and this also contributes in the favorable perpendicularity of the radial bearing with respect to the thrust support surface. This bearing arrangement is useful in a spindle motor for turning a floppy disk in a floppy disk drive.

REFERENCES:
patent: 4820949 (1989-04-01), Mizobuchi et al.
patent: 5252871 (1993-10-01), Inoue
patent: 5861687 (1999-01-01), Iwanaga et al.

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