LINEAR MOTOR ACTUATOR

PROBLEM TO BE SOLVED: To provide a linear motor actuator which is small in sectional area and is lightweight, high in rigidity, compact, and large in thrust. SOLUTION: This linear actuator is equipped with a track member 16 which is a tubular track member 16 where a mobile block shifts in a hollow part and has such sectional form that it has an opening 15 narrower than the width of the mobile block 40 at its tubular one part and has a guide (a rolling groove 14 or the like) for guiding the mobile block 40 in the axial direction of the tube inner face, the above mobile block 40 which shifts in the axial direction of the tube within the track member 16, being guided by the guide (rolling groove 14 or the like), a first columnar or prismatic magnet 18 which exists inside the track member 16 and generates magnetic force, and a second magnet (an armature 46 or the like) which exists on the side of the mobile block 40 and is shaped to surround the first magnet 18. COPYRIGHT: (C)2007,JPO&INPIT