GRIPPER MECHANISM AND MOVEMENT MECHANISM

摘要

A gripper mechanism and a movement mechanism which utilize an electromagnetic actuator which can secure a sufficient thrust force at least at a certain level over a wide range of displacement. The movement mechanism includes a pair of electromagnetic actuators disposed inside a pair of rails and an intermediate actuator provided between the electromagnetic actuators. The electromagnetic actuators function as a gripper mechanism to be gripped by the rails. The electromagnetic actuators each include a displacement amplification mechanism including a magnetic body, and coils provided in the displacement amplification mechanism. A magnetic flux is generated in the magnetic body by passing an electric current through the coils so as to displace the displacement amplification points of the displacement amplification mechanism.

主权项

1. A gripper mechanism comprising an electromagnetic actuator provided in a guide, said electromagnetic actuator comprising a displacement amplification mechanism including a magnetic body having at least one displacement amplification point and a thrust generating portion, and a coil, provided in the displacement amplification mechanism, for generating a magnetic flux in the magnetic body, wherein a magnetic flux is generated in the magnetic body by passing an electric current through the coil, thereby generating a thrust force in the thrust generating portion, and the displacement amplification point is displaced by the thrust force so that the displacement amplification point is brought into contact with or separated from the guide.