| 摘要 |
PURPOSE:To perform a precise treating work regardless of length and curved state by providing a treating work part, a rapid deforming piezoelectric actuator for generating the driving force of the treating work part, and a tubular body for guiding the rapid deforming piezoelectric actuator. CONSTITUTION:In a treating tool 21, the top end part of a flexible tube 22 as a tubular body is formed of a hard tube 23. A treating arm 24 as a treating work working part capable of opening and closing is exposed to the top end part. The treating arm 24 is connected to an expanding and contracting mechanism part 25 expanded and contracted in pantagraph type, and one end thereof is pivotally supported by the hard tube 23. The arm 24 is closed at the time of expanding the extending and contracting mechanism part 25, and opened at the time of contracting. A rapid deforming piezoelectric actuator 26 is concentrically received in the hard tube 23, and the treating arm 24 is connected to the piezoelectric actuator 26 through the expanding and contracting mechanism part 25. The piezoelectric actuator 26 has a moving body 27, piezoelectric element 28 and inertial body 29 mutually fastened, and the moving body 27 is held on a base by frictional force. |
