| 摘要 |
PURPOSE:To efficiently convert oscillation to a mechanical driving force, by forming square or U-shaped oscillating unit, and by permitting both the confronted sides to resonate together. CONSTITUTION:A piezoelectric driving device includes a U-shaped metallic oscillating unit 2 having a pair of confronted sides with square-formed cross sections, and on the two adjacent surfaces, piezoelectric elements are fitted to form piezoelectric element sections 4. When specified high-frequency voltage is applied to the element sections 4, then the confronted sides 3 are provided with the oscillator 1 of resonating bending-oscillation, its power-supply device 5, permanent magnets 7, and the contact member 6 of a magnetic unit, and the contact member 6 or the oscillator 1 is driven. As a result, the resonance of the oscillating unit 2 is performed so that the base end section 2a of the two continuous confronted sides 3 may be in a non-oscillation state, and so from setting the base end section 2a to be a bearing section, oscillation is not to be prevented. |
