Rotor assembly for electric stepping motor

Details Rotor assembly for electric stepping motor Rotor assembly for electric stepping motor

1980-01-04

1982-03-02

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 49R, 310 83, 310261, H02K 1500

Patent

active

043180175

ABSTRACT:
A rotor assembly for a stepping motor is provided by locating one flat side of a brittle annular rotor disc against an annular alignment surface on a hub and mounting the hub with aligned rotor disc thereon on a central shaft carrying an annular clamping washer. The clamping washer includes an inner peripheral portion which is clamped between first and second abutment surfaces on the shaft and hub and a resilient outer peripheral portion which bears axially against the other flat side of the rotor disc with a spring-like bias to clamp the disc in prealigned position on the hub. Required alignment of the brittle rotor disc is thereby achieved while minimizing the danger of breakage and also reducing the number of rotor components and assembly steps.

REFERENCES:
patent: 4035676 (1977-07-01), Adair
patent: 4060745 (1977-11-01), Linscott, Jr.
patent: 4067101 (1978-01-01), Ono
patent: 4079279 (1978-03-01), Oudet et al.

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