Patent ID: 9118237
Filing Date: 2015-08-25
Classification: H02K

Abstract:
1. A mover for a linear motor, comprising: an armature having a plurality of teeth arranged along a line and wound with coils; a main-pole magnet array arranged at a side of the armature at which the teeth exist, the main-pole magnet array including a plurality of main-pole magnets with different polarities alternately arranged along an arranging direction of the teeth; and auxiliary-pole magnets each of which is arranged adjacent to one of two opposite ends of the main-pole magnet array, wherein each of the auxiliary-pole magnets is arranged in a spaced-apart relationship with a main-pole magnet positioned closest thereto, wherein the main-pole magnets and the auxiliary-pole magnets are permanent magnets, wherein each pair of the main-pole magnets is arranged at a tip end surface of each of the teeth, wherein adjoining pairs of the main-pole magnets are arranged with a first gap therebetween, wherein each of the auxiliary-pole magnets and the main-pole magnet positioned closest thereto are arranged with a second gap therebetween, and wherein the second gap is greater than the first gap.