Motor for driving magnetic disk

Details Motor for driving magnetic disk Motor for driving magnetic disk

1998-09-24

2000-10-24

Ponomarenko, Nick

Electrical generator or motor structure

Dynamoelectric

Rotary

310 67R, H02K 524

Patent

active

061371963

ABSTRACT:
A motor for driving a magnetic disk characterized by that it has a noise cutoff layer 121 for noise blocking interposed between the inner side of the stator 116 and the center shaft and the stator 116 is positioned in a fixing portion and adhesively attached thereto. The noise cutoff layer 121 is provided either by an air gap or a substance filled therein which transmits noise less than the laminated core of the center shaft and the stator. Further, the substance filled in the noise cutoff layer 121 may be a porous substance. Still further, a noise blank sheet 123 may be interposed between the stator 116 and the flange 100 on which the stator is fixed.

REFERENCES:
patent: 4647803 (1987-03-01), Von Der Heide et al.
patent: 4760299 (1988-07-01), Dickie et al.
patent: 5177650 (1993-01-01), Jabari et al.
patent: 5241229 (1993-08-01), Katakura et al.
patent: 5334895 (1994-08-01), Morioka et al.
patent: 5365388 (1994-11-01), Maughan et al.

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