| 摘要 |
PURPOSE:To reduce the size and weight of an actuator by integrating a pen holder ahd a drive unit, thereby performing high speed operation of a pen. CONSTITUTION:A coil holder 12 is mounted at the inside of a bearing holder 13, a movable piece mounted with a pen is integrally provided, and a coil 14 is mounted in the holder 13. In the above structure, when energized, a thrust is generated at the coil 14, the movable unit is dropped along a shaft 15 if it is larger than the reaction of a spring material 19. Thus, a drive unit and a pen holder can be integrated, thereby reducing the size and weight to decrease the load of X-motor and Y-motor of a plotter. |
