PIEZOELECTRIC DRIVE DEVICE, FINGER ASSIST DEVICE AND ROBOT

摘要

PROBLEM TO BE SOLVED: To prevent a driving device and a driven section from being locked even when a control device is stuck.SOLUTION: A finger assist device comprises: a driving section having a piezoelectric material; a driven section capable of being brought into contact with the driving section; and a movable section capable of being brought into contact with the driving section. The movable section has a first state and a second state. Pressing force from the driving section to the driven section in the first state less than pressing force from the driving section to the driven section in the second state.SELECTED DRAWING: Figure 10