Patent ID: 6376956
Filing Date: 2002-04-23
Classification: H02K

Abstract:
A pole arrangement of a motor including a yoke, a plurality of permanent-magnet main poles disposed annularly at equal intervals on the inner periphery of said yoke, a plurality of magnet holders holding auxiliary poles therein disposed between adjacent two of said main poles, whereineach said magnet holder comprises resilient stopper means having side plates for pressing said main poles in circumferentially outer directions and a base plate connecting said side plates at a radially outer periphery thereof, each said auxiliary pole is held inside said resilient stopper means, and each said magnet holder further comprises a first stopper member supporting said auxiliary pole at axially opposite ends thereof, a second stopper member supporting said main poles at axially opposite ends thereof, an L-bend member at an edge of said side plates and a third stopper member resiliently pressing said auxiliary poles against said L-bend member at said radially outer periphery thereof.