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    • 3. 发明申请
    • PIEZOELECTRIC MOTOR, LIQUID EJECTING APPARATUS, AND CLOCK
    • 压电电机,液体喷射装置和时钟
    • US20100245517A1
    • 2010-09-30
    • US12732045
    • 2010-03-25
    • Osamu MiyazawaYasuharu HashimotoAkihito MatsumotoAkira Matsuzawa
    • Osamu MiyazawaYasuharu HashimotoAkihito MatsumotoAkira Matsuzawa
    • B41J29/38H02N2/12
    • B41J13/03B41J2/14201B41J11/42B41J23/00G04C3/00G04C3/12H01L41/08H01L41/0913H02N2/004H02N2/0055H02N2/021H02N2/026H02N2/103H02N2/123
    • A piezoelectric motor includes a piezoelectric element having a piezoelectric layer, and a first and a second electrodes, the first electrode provided on one surface side of the piezoelectric layer, and the second electrode provided on the other surface side of the piezoelectric layer; a piezoelectric actuator having a vibrating member anchored to the first electrode of the piezoelectric element; and a rotational shaft with which the vibrating member makes contact and is rotated thereby. The piezoelectric layer includes a vertical vibration excitation region, provided toward the center of the piezoelectric layer in the widthwise direction, that elicits vertical vibrations, and two groups of bending vibration excitation regions, one group disposed on either side of the vertical vibration excitation region so that two opposing diagonal pairs are formed; and the polarization direction of the vertical vibration excitation region and one of the groups of the bending vibration excitation regions in the piezoelectric layer is inverted relative to the other group of the bending vibration excitation regions.
    • 压电电动机包括具有压电层的压电元件和第一和第二电极,设置在压电层的一个表面侧的第一电极和设置在压电层另一表面侧的第二电极; 压电致动器,其具有锚定到所述压电元件的第一电极的振动构件; 以及旋转轴,振动构件与其接触并由此旋转。 压电层包括沿宽度方向朝向压电层的中心设置的垂直振动激励区域,其引起垂直振动,以及两组弯曲振动激励区域,一组设置在垂直振动激励区域的两侧,因此 形成两个相对的对角线对; 并且垂直振动激励区域的偏振方向和压电层中的弯曲振动激励区域中的一个组相对于另一组弯曲振动激励区域反转。