| 摘要 |
PURPOSE: To provide a grip type linear actuator in which strong grip force is generated uniformly by a grip part. CONSTITUTION: Arms 11 which magnify displacement and transmit to a grip parts 12 are connected with both ends of a piezoelectric element A through elastic hinges h12. The grip parts are equipped with an elastic direction adjustment part 12b for adjusting the direction of a grip face 12a. The piezoelectric element A is connected with the installation part 16 of a piezoelectric element B through an elastic connection part 13. In automatic adjustment, the grip parts are moved by switching on the piezoelectric element A so that the elastic direction adjustment parts 12b is brought into contact with the surface of a moving body. When there is a difference in the grip force between the two grip parts, the elastic connection part 13 is deflected so that the arms 11 and the piezoelectric element A are moved horizontally to make the grip force of the two grip parts equal. In this grip condition, when the piezoelectric element B is switched on or off, the moving body is moved vertically with the grip parts by the force generated from the piezoelectric element B or the shrinking force of a flat spring 17. |
