| 摘要 |
<p>The invention relates to an electromagnetic actuator comprising a coil (1), a magnetic actuation element (3) which is mounted in the coil, at least one ring (6) which is made from a magnetic material and which is disposed around the coil and at least one permanent magnet (5) which is joined to one end of the ring and which is disposed opposite one part of the external surface of the coil (1), said permanent magnet having a magnetisation field that extends along an axial direction of the coil (1). Moreover, the magnetic actuation element is mounted to slide in a non-magnetic guide element (2) that extends in the coil and one end of the ring is disposed opposite the magnet which is separated from the non-magnetic guide element by a non-magnetic space.</p> |
