| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a simple and small driving device. <P>SOLUTION: A driving device 10 includes a weight 20, a piezoelectric element 30, a rod 40, and a driven member 50. The weight 20 is elastically fixed to a fixing wall 91. One end of the piezoelectric element 30 along the extension direction is fixed to the weight 20. The rod 40 is fixed to the other end of the piezoelectric element 30 along the extension direction. An end part of the rod 40, which is located at the opposite side of an end part fixed to the piezoelectric element 30, is inserted into a hole for holding of a holding wall 92. The driven member 50 is frictionally engaged with the rod 40. A through hole 22 is formed at the weight 20. The position and the shape of the through hole 22 is designed so that a secondary harmonic wave of a driving voltage signal, which is applied to the piezoelectric element 30, matches a secondary resonance frequency of a vibration system 11. <P>COPYRIGHT: (C)2013,JPO&INPIT |
