BLDC motor assembly

Details BLDC motor assembly BLDC motor assembly

2007-05-09

2010-12-07

Trinh, Minh (Department: 3729)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06800R, C310S089000, C310S254100, C029S596000

Reexamination Certificate

active

07847457

ABSTRACT:
A BLDC electric motor assembly (24) includes a rotor (42) having a plurality of magnet segments (50) securely retained thereabout by an annular ring (68) which is shrunk in situ in an electromagnetic forming operation. The magnet segments (50) are formed with tongues (62, 64) on their upper and lower ends (56, 58). One tongue (64) seats in a retaining pocket (48) molded on the rotor shaft (40), whereas the other tongue (62) provides a ledge into which the ring (68) seats. After the magnet forming operation, wherein the ring (68) is shrunk, the outer surface of the ring (68) is flush with the outer surfaces (54) of the magnet segments (50).

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