Artificial hand

摘要

An artificial hand is constructed to sufficiently rotate the fingers as a unit using a smaller small-sized motor by decreasing the magnitude of the radius of rotation of its rotating motion. The artificial hand has a support part for rotatably supporting the fingers; a conversion device for converting a rotating output of a driving device to a linear motion; and a finger opening-and-closing operation part for converting a linear motion of the conversion device to an opening-and-closing operation of the fingers. A holding part rotatably holds the support part above or at an upper part of the driving device; and another driving device is arranged in a terminal device held by a wrist part. A rotating output of another driving device is converted to a rotational motion of the support part; and a rotating mechanism rotates the fingers and driving device as a unit around the holding part.