| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrically operated artificial arm which is highly quiet by reducing operation noise and can be lightweight. <P>SOLUTION: A polymer actuator 50 which is formed of a polymeric material, and linearly reciprocates by being elastically deformed by voltage application and restoring to an original shape in response to stop of the voltage application is used as a drive source for rotating a first finger portion 35 and a second finger portion 42 supported by an artificial arm body 10. A power transmitting portion 60 is provided which converts the linear reciprocating movement into rotation movement and transmits the converted movement to the finger portions 35, 42. A link mechanism 70 having a plurality of levers including both the finger portions 35, 42 is provided on a power transmission path from the polymer actuator 50 to both the finger portions 35, 42 through the power transmitting portion 60. At least any one of the levers is made to function as a leverage having a fulcrum, a point of effort and a point of action. The displacement magnitude to be input to the levers through the point of effort is amplified and output through the point of action. <P>COPYRIGHT: (C)2013,JPO&INPIT |
