| 摘要 |
<p>A conductive housing (20) has stationary coil units (16,18) energized to move the movable armatures (12,14) between three axial positions. The stationary magnetic guide section (28) is associated with the magnetic guide section (30) provided in the movable armatures. The guide sections are formed with projections along the longitudinal axis of motion. The projections are designed to form an air gap. A permanent magnet unit is assigned such that permanent magnet flux is guided across the air gap.</p> |
