| 摘要 |
PURPOSE:To avoid the lowering of the efficiency of oscillation, by combining circular reciprocating oscillation and linear reciprocating oscillation with each other, and by arranging a plurality of piezoelectric oscillators for generating the kinematic locus of a curve closed-circuit at the tip sections of the oscillators, on both the sides of a moving unit. CONSTITUTION:On both the upper and lower surfaces of a moving unit 1, frictional members 7 are bonded, and in the shape of the moving unit 1 inserted into the U shaped base unit 8 of a linear motor, a plurality of piezoelectric oscillators 9 are bonded and arranged in the unit 8. In the piezoelectric oscillators 9, oscillator tip sections 11 for driving the moving unit 1 frictionally are formed on oscillation units oscillated and driven by a piezoelectric unit 12. The piezoelectric unit 12 consists of a first piezoelectric element 12a generating a circular reciprocating oscillation at the tip sections 11 and a second piezoelectric element 12b generating a linear reciprocating oscillation at the sections 11, and is provided with an electrode 13 and a lead wire 14. As a result, when periodic voltage is applied respectively to the piezoelectric elements 12a, 12b, then the tip sections 11 are moved forming the locus of a curve closed-circuit, and the moving unit 1 is driven. |
