LINEAR MOTOR

摘要

A linear motor includes a mover movable in a first direction and a stator. A yoke includes a pair of back yokes provided opposite to each other so as to sandwich the mover in a second direction perpendicular to the first direction. A plurality of field magnets are provided on an inner lateral surface of each of the pair of back yokes in the first direction. A pair of auxiliary magnets are provided (i) on end lateral surfaces of the back yokes and (ii) in the vicinity of the field magnets at the extreme end provided in the back yoke. A magnetic member is provided to surround the pair of auxiliary magnets.

主权项

1. A linear motor comprising:
a mover, the mover being movable along a first axis; a stator; a pair of back yokes provided in one of either the mover or the stator, inner lateral surfaces of the back yokes opposing each other along a second axis perpendicular to the first axis, wherein the other of either the mover or the stator is sandwiched between the pair of back yokes; a plurality of field magnets arranged on the inner lateral surfaces of the back yokes, along the first axis; a magnetic member magnetically coupling the pair of back yokes endwise; and one or more auxiliary magnets each being provided either inside the magnetic member or in contact with the magnetic member.