Spindle motor for magnetic disk devices

Details Spindle motor for magnetic disk devices Spindle motor for magnetic disk devices

1992-08-28

1994-08-02

Voeltz, Emanuel T.

Electrical generator or motor structure

Dynamoelectric

Rotary

310267, 360 9807, H02K 1100, H02K 127, G11B 1704

Patent

active

053348966

ABSTRACT:
The invention provides a spindle motor for magnetic disk devices capable of coping with small magnetic disks, in which the leaking magnetic flux in the motor section does not adversely affect the magnetic head. The spindle motor consists of a stator, a magnetic disk mounting hub axially supported on a frame of the stator, a bowl-like rotor yoke protruding from the base of the hub in the radial direction and covering the top and circumference of the stator, and a rotor magnet fitted over the inner circumference of the rotor yoke in a position opposite to the magnetic pole of the stator. A clearance space comprising is provided between a mounting seat of the magnetic disk and the top of the rotor yoke. The outer diameter of the hub base is also smaller than the information-recording region of the magnetic disk, and the rotor yoke is fitted as a magnetic body on the hub, which is made from the same material as the substrate of the magnetic disk.

REFERENCES:
patent: 4779165 (1988-10-01), Elsaesser et al.
patent: 4788464 (1988-11-01), Nishikawa et al.
patent: 4874976 (1989-10-01), Ohsawa et al.
patent: 4949000 (1990-08-01), Petersen
patent: 4965476 (1990-10-01), Lin
patent: 5008573 (1991-04-01), Beppu et al.
patent: 5038240 (1991-08-01), Isomura
patent: 5047677 (1991-09-01), Mineta et al.
patent: 5157295 (1992-10-01), Stefansky et al.

Affiliated with

Also associated with

Rating

Spindle motor for magnetic disk devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spindle motor for magnetic disk devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spindle motor for magnetic disk devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-66966