| 摘要 |
<p>The present invention relates to a linear actuator in which ㄷ-shaped or C-shaped iron core is arranged in a stator of a multi-stage structure such that portions of the iron core is overlapped with each other, thus enabling the bi-directional operation of a plunger by a conversion of an electrical input without a mechanical structure, i.e. a spring, and increasing the stroke distance of the plunger. Further, current is sequentially applied to the coil of the stator having a multi-stage structure, thus continuously moving the plunger at a predetermined distance.</p> |
