公开(公告)号：US20110241486A1

公开(公告)日：2011-10-06

申请号：US13065892

申请日：2011-03-31

申请人： Akihiro Iino ,  Yukio Akiyama ,  Satoshi Sakai ,  Takuo Oosaki ,  Masakazu Hirabayashi ,  Masatomo Moriko

发明人： Akihiro Iino ,  Yukio Akiyama ,  Satoshi Sakai ,  Takuo Oosaki ,  Masakazu Hirabayashi ,  Masatomo Moriko

IPC分类号： H02N2/12

CPC分类号： H02N2/12 ,  G04C3/12 ,  H02N2/166

摘要： An ultrasonic motor which exhibits stable performances by suppressing irregularities of magnitudes of two standing waves excited by a piezoelectric element is provided. The ultrasonic motor is provided with a piezoelectric element which includes: a plurality of divided electrodes which are mounted on one surface and are equidistantly arranged in the circumferential direction; an inner peripheral electrode which is arranged on an inner peripheral side of the divided electrodes; an outer peripheral electrode which is arranged on an outer peripheral side of the divided electrodes; a plurality of inner peripheral short-circuiting electrodes which are mounted on every other divided electrode out of the divided electrodes and on the inner peripheral electrode so as to make every other divided electrode short-circuited with the inner peripheral electrode in the radial direction of the piezoelectric element; a plurality of outer peripheral short-circuiting electrodes which are mounted on the divided electrodes which are not short-circuited with the inner peripheral electrodes out of the divided electrodes and on the outer peripheral electrode so as to make the divided electrodes which are not short-circuited with the inner peripheral electrode short-circuited with the outer peripheral electrode in the radial direction of the piezoelectric element.

摘要翻译： 提供了通过抑制由压电元件激发的两个驻波的大小的不规则性而表现出稳定的性能的超声波马达。 超声波马达设置有压电元件，该压电元件包括​​：多个分隔电极，其安装在一个表面上并沿圆周方向等距布置; 配置在分割电极的内周侧的内周电极; 外周电极，其设置在所述分割电极的外周侧; 多个内周短路电极，分别安装在分割电极之间的每隔一个分割电极和内周电极上，以使每隔一个分隔电极与内周电极沿径向方向短路 压电元件 多个外周短路电极，其安装在分割电极上，其与分隔电极之间的内周电极没有短路，并且在外周电极上，使得不短路的分割电极， 与外周电极在压电元件的径向方向上与外周电极短路的内周电极环绕。

公开(公告)号：US08604667B2

公开(公告)日：2013-12-10

申请号：US13065892

申请日：2011-03-31

申请人： Akihiro Iino ,  Yukio Akiyama ,  Satoshi Sakai ,  Takuo Oosaki ,  Masakazu Hirabayashi ,  Masatomo Moriko

发明人： Akihiro Iino ,  Yukio Akiyama ,  Satoshi Sakai ,  Takuo Oosaki ,  Masakazu Hirabayashi ,  Masatomo Moriko

IPC分类号： H02N2/12

CPC分类号： H02N2/12 ,  G04C3/12 ,  H02N2/166

摘要： An ultrasonic motor exhibits stable performances by suppressing irregularities of magnitudes of two standing waves excited by a piezoelectric element. A plurality of divided electrodes are mounted on one surface of the piezoelectric element and are equidistantly arranged in the circumferential and radial directions and have equal polarized areas. Alternate ones of the divided electrodes are short-circuited in the radial direction by inner electrodes arranged on the inner peripheral side of the divided electrodes, and the other alternate ones of the divided electrodes are short-circuited in the radial direction by outer electrodes arranged on the outer peripheral side of the divided electrodes.

摘要翻译： 通过抑制由压电元件激发的两个驻波的大小的不规则性，超声波马达表现出稳定的性能。 多个分割电极安装在压电元件的一个表面上，并且在周向和径向方向上等距布置并且具有相等的偏振面积。 分开的电极中的另一个通过设置在分隔电极的内周侧上的内电极沿径向方向短路，并且另外的分开的电极中的另一个分开的电极在径向方向上被布置在其上的外部电极短路 分割电极的外周侧。