Patent ID: 6960858

Claim:
A motor employing a permanent magnet, the motor comprising: a mover comprising a common permanent magnet placed along a direction of movement of the motor, an N pole magnetic yoke and an S pole magnetic yoke provided on both sides of and sandwiching the common permanent magnet, a plurality of N magnetic poles and S magnetic poles magnetically coupled to the magnetic yokes and placed to be perpendicular to the direction of movement of the motor and such that an N pole and an S pole are alternately placed, an auxiliary magnet provided between the N magnetic pole and an adjacent S magnetic pole, and an AC winding wound on the plurality of N magnetic poles and S magnetic poles; and a stator which is installed to form a predetermined gap between the stator and the mover, and having a plurality of projection and depression sections on a surface opposing the mover, wherein the N magnetic pole of the mover is formed such that its width increases as the distance from the stator increases on a side of the N pole magnetic yoke; and the S magnetic pole of the mover is formed such that its width increases as the distance from the stator increases on a side of the S pole magnetic yoke.