| 摘要 |
A method includes the steps of 1) providing a ring-shaped permanent magnet having radially inner and outer surfaces and opposite first and second side surfaces; 2) overmolding a casing material about the magnet to yield a magnet assembly, the casing material comprising a material that contracts as it cools from a molten state and that includes a portion located along the radially outer surface and the first side surface; and 3) mounting the assembly about a rotor shaft.
|
