| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary type actuator which is driven by an inertia force generated by deformation of a piezoelectric element, a linear motion mechanism using the same, and an electronic apparatus. <P>SOLUTION: One ends of bimorphs 1a, 1b composed of a piezoelectric element are fixed to projecting parts 3a, 3b provided to the side surface of a cylindrical rotor 3. Additional masses 2a, 2b are fixed to the other ends of the bimorphs 1a, 1b. In a bimorph element 1, piezoelectric elements 6a, 6b which are polarized are overlapped and jointed in the tangential direction orthogonal to the radial direction of the rotor 3. A voltage is applied between the joint surface and the other surface, so that one piezoelectric element expands while one piezoelectric element contracts, bending the bimorph element 1. Under the deformation, the bimorph element 1 generates a large inertia force in one direction, to drive the rotor 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
