Stepper motor

Details Stepper motor Stepper motor

H - Electricity

02

K

310/57

H02K 37/00 (2006.01) H02K 1/14 (2006.01) H02K 21/14 (2006.01) H02K 37/14 (2006.01)

Patent

CA 1162967

STEPPER MOTOR Abstract of the Disclosure A stepper motor including a pair of annular stator plates each having a plurality of poles surrounding a central opening, the plates being fixed to each other in back-to-back relation, and a pair of annular stator cups each having a plurality of poles surrounding a central opening and a peripheral side wall. The stator cups are arranged over opposite faces of the joined- together stator plates with the poles of each stator cup inter- leaved with the poles of its respective stator plate. The peri- pheral edges of the stator plates are separated from each other to define a gap between them, and the free edges of the stator cup side walls are bent into the gap to mechanically join each stator cup to its respective stator plate. Each stator plate car- ries positioning means, such as a radially-projecting tab, and each stator cup carries cooperable positioning means, such as a notch in its side wall for snugly accommodating a tab, for in- suring accurate angular location of each stator cup with respect to the stator plates.

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