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    • 3. 发明授权
    • Vibration element and vibration wave driving apparatus
    • 振动元件和振动波驱动装置
    • US06930436B2
    • 2005-08-16
    • US10044936
    • 2002-01-15
    • Takayuki TsukimotoYutaka MaruyamaKiyoshi Nitto
    • Takayuki TsukimotoYutaka MaruyamaKiyoshi Nitto
    • H02N2/00H01L41/09H02N2/10H02N2/12H02N2/16H01L41/08
    • H02N2/106H02N2/0015
    • The present invention relates to a vibration wave driving apparatus including a vibration element having an electro-mechanical energy conversion element that is disposed between a first elastic member and a second elastic member, characterized in that the vibration element can have a plurality of vibration modes which are different in relative displacement ratio between respective ends of the vibration element. Specifically, a third elastic member is disposed between the first elastic member and the second elastic member, and the vibration element is allowed to have two portions which are different in dynamic stiffness from each other and are arranged in the axial direction thereof with the third elastic member interposed therebetween. According to this structure, the length of the vibration wave driving apparatus in the axial direction can be reduced and internal loss of vibration energy can be suppressed to be small.
    • 振动波驱动装置技术领域本发明涉及一种振动波驱动装置,其特征在于,具有振动元件,所述振动元件具有设置在第一弹性构件和第二弹性构件之间的机电能量转换元件,其特征在于,所述振动元件可以具有多个振动模式, 在振动元件的各端之间的相对位移比不同。 具体而言,在第一弹性部件和第二弹性部件之间配置有第三弹性部件,并且使振动部件具有动力刚度不同的两部分,并且沿其轴向配置有第三弹性部件 构件之间。 根据该结构,可以减小振动波驱动装置在轴向上的长度,并且可以将振动能的内部损失抑制得较小。
    • 7. 发明申请
    • Stacked type piezoelectric element and vibration wave motor
    • 堆叠型压电元件和振动波电机
    • US20070001556A1
    • 2007-01-04
    • US11474988
    • 2006-06-27
    • Kiyoshi NittoYutaka Maruyama
    • Kiyoshi NittoYutaka Maruyama
    • H01L41/083
    • H01L41/0835H01L41/0471H02N2/106
    • Provided is a stacked type piezoelectric element including a surface electrode layer as a first layer and a piezoelectric layer as a second layer. A third layer to an N-th layer thereof are formed by alternately arranging piezoelectric layers and piezoelectric layers. A surface of the piezoelectric layer is provided with four-way split inner electrodes S+, B+, A−, and B−. A surface of the piezoelectric layer is provided with four-way split inner electrodes AG+, BG+, AG−, and BG−. A surface of the piezoelectric layer is provided with four-way split inner electrodes of A+, B+, A−, and B−. The piezoelectric layers are formed such that only the inner electrode S+ serving as a sensor phase and the inner electrodes A+ and AG+ being arranged in the same phase as the inner electrode S+ are exposed to an outside of the piezoelectric layer.
    • 提供一种层叠型压电元件,其包括作为第一层的表面电极层和作为第二层的压电层。 通过交替排列压电层和压电层,形成第三层至第N层。 压电层的表面设有四路分离的内部电极S +,B +,A-和B-。 压电层的表面设有四路分离内电极AG +,BG +,AG-和BG-。 压电层的表面设置有A +,B +,A-和B-的四路分离内电极。 形成压电层,使得只有作为传感器相的内部电极S +和内部电极A +和AG +被布置在与内部电极S +相同的相位内才露出到压电层的外部。