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    Ultrasonic transducer and ultrasonic flowmeter
    2.
    发明授权
    Ultrasonic transducer and ultrasonic flowmeter 有权
    超声波换能器和超声波流量计

    公开(公告)号：US07061163B2

    公开(公告)日：2006-06-13

    申请号：US10473752

    申请日：2003-01-27

    申请人： Hidetomo Nagahara ,  Masahiko Hashimoto ,  Masaaki Suzuki ,  Kazuhiko Hashimoto ,  Takashi Hashida ,  Seigo Shiraishi ,  Norihisa Takahara

    发明人： Hidetomo Nagahara ,  Masahiko Hashimoto ,  Masaaki Suzuki ,  Kazuhiko Hashimoto ,  Takashi Hashida ,  Seigo Shiraishi ,  Norihisa Takahara

    IPC分类号： H01L41/08

    CPC分类号： G10K11/02 ,  G01F1/662

    摘要： An ultrasonic transducer according to the present invention includes: a piezoelectric body 4 to set up ultrasonic vibrations; an acoustic matching layer 3 made of a material with a density of 50 kg/m3 to 1,000 kg/m3 and an acoustic impedance of 2.5×103 kg/m2/s to 1.0×106 kg/m2/s; a lower acoustic matching layer 9 provided between the piezoelectric body 4 and the acoustic matching layer 3; and a structure supporting member 6 that supports the lower acoustic matching layer 9 and the piezoelectric body 4 thereon and shields the piezoelectric body 4 from a fluid that propagates the ultrasonic vibrations. The ultrasonic transducer includes a protective portion, which contacts with at least a portion of a side surface of the acoustic matching layer 4. This protective portion is defined by a portion of the lower acoustic matching layer 9 and forms an integral part of the lower acoustic matching layer 9.

    摘要翻译： 根据本发明的超声波换能器包括：压电体4，用于设置超声波振动; 由密度为50kg / m 3至1,000kg / m 3的材料制成的声匹配层3和2.5×10 3的声阻抗， / SUP> kg / m 2 / s至1.0×10 6 kg / m 2 / s; 设置在压电体4和声匹配层3之间的下声匹配层9; 以及在其上支撑下声匹配层9和压电体4的结构支撑构件6，其将压电体4与传播超声波振动的流体进行屏蔽。 超声波换能器包括与声匹配层4的侧表面的至少一部分接触的保护部分。 该保护部分由下声匹配层9的一部分限定，并形成下声匹配层9的整体部分。

    Acoustic matching member, ultrasound transducer, ultrasonic flowmeter and method for manufacturing the same
    3.
    发明授权
    Acoustic matching member, ultrasound transducer, ultrasonic flowmeter and method for manufacturing the same 有权
    声匹配构件，超声波换能器，超声波流量计及其制造方法

    公开(公告)号：US06788620B2

    公开(公告)日：2004-09-07

    申请号：US10434516

    申请日：2003-05-07

    申请人： Seigo Shiraishi ,  Norihisa Takahara ,  Masaaki Suzuki ,  Kazuhiko Hashimoto ,  Takashi Hashida ,  Hidetomo Nagahara ,  Masahiko Hashimoto

    发明人： Seigo Shiraishi ,  Norihisa Takahara ,  Masaaki Suzuki ,  Kazuhiko Hashimoto ,  Takashi Hashida ,  Hidetomo Nagahara ,  Masahiko Hashimoto

    IPC分类号： H04R100

    CPC分类号： G10K11/02 ,  Y10T29/42 ,  Y10T29/49005 ,  Y10T29/49007 ,  Y10T29/4913 ,  Y10T29/49155 ,  Y10T29/49165

    摘要： An acoustic matching member that is incorporated into an ultrasonic transducer for transmitting and receiving ultrasonic waves, includes: at least two layers including a first layer and a second layer that have different acoustic impedance values from each other. The first layer is made of a composite material of a porous member and a filing material supported by void portions of the porous member, the second layer is made of the filling material or the porous member, and the first layer and the second layer are present in this stated order. A piezoelectric member is disposed on a side of the first layer of the acoustic matching member to form an ultrasonic transducer or an ultrasonic flowmeter. The acoustic matching member does not have independent intermediate layers between the layers, so that delamination hardly occurs and the difficulty in the designing associated with the presence of intermediate layers can be avoided.

    摘要翻译： 包括在用于发送和接收超声波的超声波换能器中的声匹配构件包括：包括彼此具有不同声阻抗值的第一层和第二层的至少两层。 第一层由多孔构件的复合材料和由多孔构件的空隙部分支撑的填充材料制成，第二层由填充材料或多孔构件制成，并且第一层和第二层存在 按照这个命令。 压电构件设置在声匹配构件的第一层的一侧，以形成超声波换能器或超声波流量计。 声匹配构件在层之间不具有独立的中间层，使得几乎不发生分层，并且可以避免与中间层的存在相关的设计的困难。

    Method of producing a piezocomposite
    6.
    发明授权
    Method of producing a piezocomposite 有权
    压电复合材料的制造方法

    公开(公告)号：US07424771B2

    公开(公告)日：2008-09-16

    申请号：US11042377

    申请日：2005-01-24

    申请人： Seigo Shiraishi ,  Norihisa Takahara ,  Emiko Igaki ,  Hidetomo Nagahara ,  Koetsu Saito

    发明人： Seigo Shiraishi ,  Norihisa Takahara ,  Emiko Igaki ,  Hidetomo Nagahara ,  Koetsu Saito

    IPC分类号： H01L41/083

    CPC分类号： B06B1/0629 ,  H01L41/183 ,  H01L41/37 ,  Y10T29/42 ,  Y10T29/49194 ,  Y10T29/49798

    摘要： A method of preparing a composite sheet unit includes arranging a plurality of sintered piezoelectric thin wires in a uniform direction on a surface of a resin layer is prepared. A plurality of the same are laminated and integrated so that the sintered piezoelectric thin wires are positioned between the resin layers. Here, a curing resin may be impregnated therein so as to form resin-impregnated-cured portions. Then, the lamination is cut in a direction crossing a lengthwise direction of the sintered piezoelectric thin wires, so that a piezocomposite is obtained. Cut surfaces may be ground. By so doing, it is possible to provide a highly reliable piezocomposite having a fine structure at low cost, and to provide an ultrasonic probe for ultrasonic diagnostic equipment, as well as ultrasonic diagnostic equipment using the same.

    摘要翻译： 制备复合片材单元的方法包括在树脂层的表面上沿均匀的方向布置多个烧结的压电细线。 将其多个层叠并整合，使得烧结的压电细线位于树脂层之间。 这里可以浸渍固化树脂以形成树脂浸渍固化部分。 然后，在与烧结的压电细线的长度方向交叉的方向上切割层压体，从而得到压电复合体。 切割面可能被磨碎。 通过这样做，可以以低成本提供具有精细结构的高度可靠的压电复合材料，并且提供用于超声诊断设备的超声波探头以及使用其的超声波诊断设备。

    Ultrasonic sensor
    10.
    发明申请
    Ultrasonic sensor 有权
    超声波传感器

    公开(公告)号：US20050139013A1

    公开(公告)日：2005-06-30

    申请号：US10510348

    申请日：2003-04-28

    申请人： Masahiko Hashimoto ,  Hidetomo Nagahara ,  Masaaki Suzuki

    发明人： Masahiko Hashimoto ,  Hidetomo Nagahara ,  Masaaki Suzuki

    IPC分类号： G01F1/66 ,  G10K11/02 ,  H04R1/44 ,  H04R17/00 ,  G01N24/00

    CPC分类号： G01F1/662 ,  G01N2291/02836 ,  G10K11/02 ,  H04R1/44

    摘要： There are provided an ultrasonic transducer that performs transmission and/or reception of an ultrasonic wave and a propagation medium portion that forms a propagation path of the ultrasonic wave. A density ρ1 and an acoustic velocity C1 of the propagation medium portion and a density ρ2 and a sound velocity C2 of a fluid that stuffs a circumjacent space are appropriately set, and a propagation loss of the ultrasonic wave into the fluid is reduced to almost zero by refracting the ultrasonic wave at an appropriate angle.

    摘要翻译： 提供了一种执行发送和/或接收超声波的超声波换能器和形成超声波的传播路径的传播介质部分。 传播介质部分的密度r H 1 N 1和声速C 1 N 2和声速C 2 适当地设定填充周围空间的流体的，并且通过以适当的角度折射超声波将超声波传播到流体中的传播损耗几乎为零。