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    • 10. 发明专利
    • The piezoelectric actuator and the driving device
    • 空值
    • JP4484502B2
    • 2010-06-16
    • JP2003401926
    • 2003-12-01
    • 太平洋セメント株式会社有限会社熊本テクノロジー
    • 昇 宮田光二 小坂雅幸 渡邉
    • H01L41/083H02N2/00H01L41/187H01L41/22H01L41/27
    • PROBLEM TO BE SOLVED: To provide a piezoelectric actuator capable of enhancing a resonant frequency of primary deflective oscillation, and to provide a driving device using the same. SOLUTION: The piezoelectric actuator is provided with an expansion/contraction displacement part, in which a first piezoelectric substance and a first plane electrode are alternately laminated and the first piezoelectric substance is polarized in a first direction vertical to the surface of the first plane electrode, and a shear displacement part, which is connected to the expansion/contraction displacement part in the first direction and in which a second piezoelectric substance and a second plane electrode are alternately laminated and the second piezoelectric substance is polarized in a second direction parallel to the second plane electrode. The length of the piezoelectric actuator in the first direction is made as L 1 mm and that of in the second direction as L 2 mm. When constants derived on the basis of the length and resonant frequency of the actual measurement regarding a rectangular piezoelectric actuator made of the same material as the piezoelectric actuator are made as a, b, and c, L 1 and L 2 satisfy the relational expression of 40 1 b × L 2 c . COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种能够提高初级偏转振荡的谐振频率的压电致动器,并提供使用该压电致动器的驱动装置。 解决方案:压电致动器设置有膨胀/收缩位移部分,其中第一压电物质和第一平面电极交替层叠,并且第一压电物质沿垂直于第一压电物体的表面的第一方向极化 平面电极和剪切位移部分,其在第一方向上连接到膨胀/收缩位移部分,并且其中第二压电材料和第二平面电极交替层叠,并且第二压电材料沿第二方向平行地极化 到第二平面电极。 第一方向的压电致动器的长度为L 1 mm,第二方向的长度为L 2 mm。 当基于由与压电致动器相同的材料构成的矩形压电致动器的实际测量的长度和谐振频率导出的常数被制成a,b和c,L 1 和 L 2 满足关系表达式40 1 b ×L 2 / SP>。 版权所有(C)2005,JPO&NCIPI