Motor structure with magnetic interference shield

Details Motor structure with magnetic interference shield Motor structure with magnetic interference shield

1990-03-15

1991-05-14

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 85, 360 9807, H02K 1100, H02K 2124, G11B 512

Patent

active

050158937

ABSTRACT:
A motor structure for driving discs includes a motor having a frame wall and a hollow holding cylinder extending generally perpendicular from the frame wall, a rotor shaft coaxially disposed in the hollow holding cylinder, and bearings mounted on the hollow holding cylinder for rotatably supporting the rotor shaft. The holding cylinder has an outer part, and a coil is mounted on the outer part. A cup-shaped rotor is mounted on the rotor shaft, the cup-shaped rotor having an end wall, a first cylinder portion extending coaxially from the end wall, and a second cylindrical portion juxtaposed to the first cylindrical portion. The first cylindrical portion has a diameter which is less than the diameter of the second cylindrical portion, the coil being generally axially aligned with and being disposed radially inwardly of the second cylindrical portion. A magnet is mounted on the second cylindrical portion radially outwardly of the coil, and a shield is mounted on the rotor and extends radially inwardly of the first cylindrical portion for shielding the discs from the magnetic field of the motor.

REFERENCES:
patent: 4629919 (1986-12-01), Merkle
patent: 4647803 (1987-03-01), von der Heide et al.
patent: 4661735 (1987-04-01), Miki et al.
patent: 4672250 (1987-06-01), Seitz
patent: 4943781 (1990-07-01), Shiozawa

Affiliated with

Also associated with

Rating

Motor structure with magnetic interference shield does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor structure with magnetic interference shield, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor structure with magnetic interference shield will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1650656