PROBLEM TO BE SOLVED: To provide an actuator accurately performing a stepping motion in a simple mechanism without using electromagnetic force.SOLUTION: The actuator includes a driven member and three or more drive members. When a first drive member is pressed, the top portion of the first drive member moves until it matches with the valley portion of the driven member while a first slide surface and a first slide-mating surface are in contact with each other. Accordingly, the driven member performs a rotational movement by the amount produced by dividing the interval between the top portions adjacent to each other by the number of constituting drive members.COPYRIGHT: (C)2012,JPO&INPIT【課題】簡単な機構で、電磁気力を使用せずに高精度にステップ動作を行うことができるアクチュエータを提供する。【解決手段】アクチュエータは従動部材と3つ以上の駆動部材により構成される。第1駆動部材が押圧されると第1スライド面と第1被スライド面が接触しながら、第1駆動部材の頂部は従動部材の谷部と一致するまで動作する。それに伴い、従動部材は回転運動を行い、隣り合う頂部の間隔の構成される駆動部材の数で割った量だけ回転運動を行う。【選択図】図2
