公开(公告)号：US06992424B2

公开(公告)日：2006-01-31

申请号：US10467742

申请日：2002-02-07

申请人： Yukinori Sasaki ,  Tetsuro Shimamura ,  Tetsuo Kawasaki ,  Kazunari Nishihara ,  Tetsuya Furihata ,  Kuniaki Matsushita ,  Katsunori Moritoki ,  Katsu Takeda

发明人： Yukinori Sasaki ,  Tetsuro Shimamura ,  Tetsuo Kawasaki ,  Kazunari Nishihara ,  Tetsuya Furihata ,  Kuniaki Matsushita ,  Katsunori Moritoki ,  Katsu Takeda

IPC分类号： H01L41/08

CPC分类号： H03H9/177 ,  H03H9/02031 ,  H03H9/02157 ,  H03H9/562 ,  H03H9/581

摘要： A piezoelectric vibrator which uses lithium tantalate as a piezoelectric material and of which main vibration is thickness shear vibration. The thickness direction of the vibrator forms angle of 0°±5° to the X-axis of a single crystal. The longitudinal direction of vibrator lies, with the X-axis used as a rotation axis, in direction n +57°±2° clockwise from the Y-axis of the single crystal. A ratio L/H of the length L of the vibrator to the thickness H is not less than 15. A ratio Le/H of the length Le of the exciting electrode to the thickness H of the vibrator element portion is 3–6. Accordingly, a vibrator having improved temperature characteristics and a large Q is realized.

摘要翻译： 一种使用钽酸锂作为压电材料并且主要振动是厚度剪切振动的压电振动器。 振动器的厚度方向与单晶的X轴形成0°±5°的角度。 振动器的纵向方向以X轴用作旋转轴线，从单晶Y轴顺时针方向n + 57°±2°。 振动器的长度L与厚度H的比L / H不小于15.激励电极的长度Le与振动元件部分的厚度H之比Le / H为3-6。 因此，实现了具有改善的温度特性和大的Q的振动器。

公开(公告)号：US4829209A

公开(公告)日：1989-05-09

申请号：US126105

申请日：1987-11-20

申请人： Osamu Kawasaki ,  Ritsuo Inaba ,  Akira Tokushima ,  Katsu Takeda

发明人： Osamu Kawasaki ,  Ritsuo Inaba ,  Akira Tokushima ,  Katsu Takeda

IPC分类号： H01L41/09 ,  H02N2/00 ,  H02N2/16

CPC分类号： H02N2/166

摘要： In an ultrasonic motor wherein an elastic travelling wave is excited in a vibrating stator comprising a piezoelectric element and an elastic element thereby to drive and a rotor which is disposed to touch the vibrating stator with pressure by friction forces, an ultrasonic motor having high efficiency is obtained. In the present invention, the above-mentioned vibrating stator is substantially disk-type, electrodes being provided to the piezoelectric element are disposed in a form of two sets of concentric circles having different phases with respect to each other in a circumferential direction in which the vibration is travelling, and have a constitution which excites the vibrating stator by flexural vibration modes of second order or higher in a radial direction and of third order or higher in the circumferential direction, and also, are designed so that at least mechanical impedances seen from each electrode become equal. By superimposing standing waves of the flexural vibration which are excited by those two sets of electrodes, the flexural vibration is made to travel in the circumferential direction, thereby to obtain a driving force.

公开(公告)号：US09100755B2

公开(公告)日：2015-08-04

申请号：US13061762

申请日：2009-09-17

申请人： Katsu Takeda ,  Masaki Tada ,  Masashi Minakuchi ,  Fumiyasu Konno

发明人： Katsu Takeda ,  Masaki Tada ,  Masashi Minakuchi ,  Fumiyasu Konno

IPC分类号： H04B3/00 ,  H04R25/00 ,  H04R17/10

CPC分类号： H04R17/10 ,  H04R2217/03

摘要： In a sound reproducing apparatus, part of a frequency band where mode-coupled vibration can be excited is regarded as a carrier frequency. A frequency of mode coupling, with a low rate of change in vibration displacement with respect to the frequency, is regarded as a carrier signal so that a signal in an audible band which is outputted from an audible band signal source can be demodulated and reproduced with stable sound pressure in a broad frequency band.

摘要翻译： 在声音再现装置中，可以激励模式耦合振动的频带的一部分被认为是载波频率。 将振动位移相对于频率的低变化率的模式耦合的频率视为载波信号，使得从可听频带信号源输出的可听频带中的信号可以被解调和再现， 在宽频带内稳定的声压。

公开(公告)号：US20130163795A1

公开(公告)日：2013-06-27

申请号：US13820441

申请日：2011-07-12

申请人： Katsu Takeda ,  Fumiyasu Konno ,  Susumu Fukushima ,  Rihito Shoji

发明人： Katsu Takeda ,  Fumiyasu Konno ,  Susumu Fukushima ,  Rihito Shoji

IPC分类号： H04R5/02

CPC分类号： H04R5/02 ,  H04R1/26 ,  H04R1/323 ,  H04R2217/03 ,  H04R2499/15 ,  H04S2400/01

摘要： Provided is a sound reproduction device including a loudspeaker and a superdirective speaker. The loudspeaker is configured so that a sound pressure of audible sound produced therefrom decreases as the sound travels farther away from the loudspeaker. The superdirective speaker is configured so that a sound pressure of audible sound produced therefrom has a peak at a predetermined distance from the superdirective speaker, and is configured to use an ultrasonic wave as a carrier wave. The loudspeaker and the superdirective speaker are positioned such that a loudspeaker sound field of the audible sound produced from the loudspeaker and a superdirective speaker sound field of the audible sound produced from the superdirective speaker overlap with each other at a position of a listener.

摘要翻译： 提供了包括扬声器和超向量扬声器的声音再现装置。 扬声器被配置为使得由其产生的可听见的声音的声压随着声音越来越远离扬声器而减小。 超声波扬声器被配置为使得从其产生的可听见的声音的声压在距离超声向扬声器预定距离处具有峰值，并且被配置为使用超声波作为载波。 扬声器和超向扬声器被定位成使得从扬声器产生的可听见的声音的扬声器声场和从超声向扬声器产生的可听见的声音的超声向扬声器声场在收听者的位置彼此重叠。

公开(公告)号：US07370396B2

公开(公告)日：2008-05-13

申请号：US11564142

申请日：2006-11-28

申请人： Akihiko Namba ,  Keiji Onishi ,  Katsu Takeda

发明人： Akihiko Namba ,  Keiji Onishi ,  Katsu Takeda

IPC分类号： H01L41/22 ,  H01L41/00

CPC分类号： H03H9/564 ,  B41J2002/14266 ,  H03H3/04 ,  H03H9/173 ,  H03H9/174 ,  H03H9/175 ,  H03H2003/0435 ,  H03H2003/0478 ,  Y10T29/42 ,  Y10T29/49005 ,  Y10T29/49128 ,  Y10T29/4913 ,  Y10T29/49135

摘要： An electronic component includes a substrate; a piezoelectric material layer supported directly or indirectly by the substrate; a first electrode arranged on a surface of the piezoelectric material layer on an opposite side of the substrate; and a second electrode arranged on a surface of the piezoelectric material layer on the substrate side. The piezoelectric material layer is sandwiched between the first electrode and the second electrode. The first electrode has a smaller surface area than the piezoelectric material layer. A portion where the piezoelectric material layer is exposed from the first electrode includes a portion that is thinner than a thickness of the piezoelectric material layer between the first electrode and the second electrode. Thus, it is possible to configure a resonator with a higher frequency than its ordinary resonance, and it is easy to achieve an adjustment of the resonance frequency of the resonator, as well as improving the yield of the component and enabling the configuration of an electronic component that includes a plurality of resonators of different frequencies.

摘要翻译： 电子部件包括基板; 由衬底直接或间接支撑的压电材料层; 布置在所述压电材料层的与所述基板相反的一侧的表面上的第一电极; 以及设置在基板侧的压电体层的表面上的第二电极。 压电材料层夹在第一电极和第二电极之间。 第一电极具有比压电材料层更小的表面积。 压电材料层从第一电极露出的部分包括比第一电极和第二电极之间的压电材料层的厚度薄的部分。 因此，可以构成具有比其普通谐振更高的频率的谐振器，并且容易实现谐振器的谐振频率的调节，以及提高元件的产量并且能够构造电子 分量，其包括多个不同频率的谐振器。

公开(公告)号：US06227051B1

公开(公告)日：2001-05-08

申请号：US09532027

申请日：2000-03-21

申请人： Tetsuro Otsuchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Osamu Kawasaki ,  Junichi Kato ,  Kouji Kawakita ,  Hiroshi Kagata

发明人： Tetsuro Otsuchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Osamu Kawasaki ,  Junichi Kato ,  Kouji Kawakita ,  Hiroshi Kagata

IPC分类号： G01P1509

CPC分类号： G01P15/0922 ,  G01P21/00

摘要： An acceleration sensor has a piezoelectric element which includes a piezoelectric member layer in which a plurality of piezoelectric members are stacked and electrodes which are disposed in major opposed surfaces of the piezoelectric member layer; and a support member for supporting the piezoelectric element, wherein some piezoelectric members of the piezoelectric member layer are polarized. The electrodes are disposed in both surfaces of the polarized piezoelectric members. Capacitors which are formed by the polarized piezoelectric members and the electrodes in both surfaces of the polarized piezoelectric members are connected parallel to each other.

摘要翻译： 一种加速度传感器具有压电元件，该压电元件包括​​堆叠有多个压电元件的压电元件层和设置在该压电元件层主要相对表面的电极; 以及用于支撑压电元件的支撑构件，其中压电构件层的一些压电构件被极化。 电极设置在极化压电部件的两个表面。 由极化压电部件形成的电容器和极化压电部件的两面的电极彼此平行地连接。

公开(公告)号：US6050144A

公开(公告)日：2000-04-18

申请号：US89660

申请日：1998-06-03

申请人： Tetsuro Otsuchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Osamu Kawasaki ,  Junichi Kato ,  Kouji Kawakita ,  Hiroshi Kagata

发明人： Tetsuro Otsuchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Osamu Kawasaki ,  Junichi Kato ,  Kouji Kawakita ,  Hiroshi Kagata

IPC分类号： G01P15/09 ,  G01P21/00

CPC分类号： G01P15/0922 ,  G01P21/00

摘要： An acceleration sensor has a piezoelectric element which includes a piezoelectric member layer in which a plurality of piezoelectric members are stacked and electrodes which are disposed in major opposed surfaces of the piezoelectric member layer; and a support member for supporting the piezoelectric element, wherein some piezoelectric members of the piezoelectric member layer are polarized, the electrodes are disposed in the both surfaces of the polarized piezoelectric members, capacitors which are formed by the polarized piezoelectric members and the electrodes in the both surfaces of the polarized piezoelectric members are connected parallel to each other.

摘要翻译： 加速度传感器具有压电元件，该压电元件包括​​堆叠有多个压电元件的压电元件层和设置在该压电元件层的主要相对表面的电极; 以及用于支撑所述压电元件的支撑构件，其中所述压电构件层的一些压电构件被极化，所述电极设置在所述极化压电构件的两个表面中，所述极化压电构件形成的电容器和所述极化压电构件中的电极 极化压电元件的两个表面彼此平行地连接。

公开(公告)号：US5448129A

公开(公告)日：1995-09-05

申请号：US261245

申请日：1994-06-14

申请人： Masanori Sumihara ,  Katsu Takeda ,  Takahiro Nishikura ,  Osamu Kawasaki

发明人： Masanori Sumihara ,  Katsu Takeda ,  Takahiro Nishikura ,  Osamu Kawasaki

IPC分类号： H01L41/09 ,  H02N2/16 ,  H02N2/00

CPC分类号： H02N2/163 ,  H02N2/0065 ,  H02N2/007

摘要： An ultrasonic motor which achieves uniform contact between the vibrating body and the moving body and features high output transfer efficiency and high reliability, and by which the manufacturing process for the moving body thereof can be simplified and the moving body made lighter.By comprising the moving body of a carbon fiber reinforced resin composite material reinforced by at least carbon fiber, and constructing the moving body with a both-side supported or single-side supported beam construction, elasticity according to the pressure of the ultrasonic motor can be imparted in the direction of pressure of the moving body. Thus, the undulations in the contact surface of the vibrating body and the moving body can be absorbed and stable, uniform contact can be assured, and long-term maintenance of a stable friction condition can be achieved.

摘要翻译： 一种实现振动体与移动体均匀接触的超声波马达，具有输出转印效率高，可靠性高，可以简化移动体的制造工序，使移动体变轻。 通过将由至少碳纤维增强的碳纤维增强树脂复合材料的移动体构成，并且通过双侧支撑或单侧支撑梁结构构造移动体，根据超声波马达的压力可以具有弹性 在移动体的压力方向上施加。 因此，振动体和移动体的接触面的波动可以被吸收稳定，可以保证均匀的接触，并且可以实现稳定的摩擦条件的长期维持。