| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drive device having a power feeding part capable of performing power feed to a driven body while making a motor as a drive source without using an exclusive component such as a contact point. <P>SOLUTION: A resonant piezoelectric motor to rotationally drive the driven body such as a drum is composed so as to have a piezoelectric element 40 in which a pair of electrodes 32, 41 for driving are provided on both faces, a conductive finger tip 31 which is mounted to the side face of the piezoelectric element 40, and a supporting means to hold the piezoelectric element 40 so as to be capable of oscillating. A driving force to rotate the driven body is generated by the conductive finger tip 31 by electrostriction occurring in the piezoelectric element 40 corresponding to driving signals to the electrodes 32, 41 for driving. Further, a conductive part 42 which is connected to the conductive finger tip 31 is provided at the side of the piezoelectric element 40. When the conductive finger tip 31 comes into contact with the conductive part of the driven body, this conductive part and a conductive part 42 are connected via the conductive finger tip 31. As a result, the power feed is performed to the driven body side. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
