Laminated rotor for permanent magnet brushless motors

Details Laminated rotor for permanent magnet brushless motors Laminated rotor for permanent magnet brushless motors

1998-12-30

2000-06-13

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, 310217, 310 42, H02K 122, H02K 2112, H02K 106, H02K 1500

Patent

active

060753064

ABSTRACT:
A rotor is comprised of laminations forced on a shaft that has two staking rails, which penetrate the laminations and create two holding points. The two staking rails are positioned on the shaft at an angle to force the lamination toward the center of the shaft and force it hard against a flat on the shaft. This assembly provides for "zero" rotational movement without additional steps in the manufacturing process. An additional feature of the assembly is that the flat on the shaft relates to flats on the rotor to which the permanent magnets are attached, and a flat on the shaft for mounting an encoder, which flats are all in the same plane. This allows the motor to be easily aligned, which is a requirement to properly phase motor rotation to motor commutation.

REFERENCES:
patent: 902720 (1908-11-01), Euker
patent: 3477125 (1969-11-01), Schwartz
patent: 4777397 (1988-10-01), Parshall
patent: 4833353 (1989-05-01), Hansen
patent: 5013957 (1991-05-01), Wrobel

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