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    • 1. 发明授权
    • Piezoelectric acoustic component
    • 压电声部件
    • US06445108B1
    • 2002-09-03
    • US09501381
    • 2000-02-09
    • Tetsuo TakeshimaTakeshi KishimotoMuneyuki DaidaiAkihiro NomuraMasayuki Fujino
    • Tetsuo TakeshimaTakeshi KishimotoMuneyuki DaidaiAkihiro NomuraMasayuki Fujino
    • H04R1700
    • H04R31/003B06B1/0603G10K9/121G10K9/122H04R1/06H04R17/00H04R2307/023
    • A piezoelectric acoustic component includes a diaphragm having a substantially rectangular piezoelectric plate including front and back surfaces, an electrode disposed on the front surface, a substantially rectangular metal plate bonded to the back surface of the substantially rectangular piezoelectric plate directly or via an electrode disposed on the back surface of the substantially rectangular piezoelectric plate, an insulating cap having an upper wall, four side walls extending from the upper, a pair of support members arranged to support the diaphragm at the inside of the two of four sides walls opposed to each other, and a plate shaped substrate having a first electrode section and a second electrode section. The diaphragm is disposed the insulating cap. Two of four side edges of the diaphragm are opposed to each other and fixed to the pair of support members. A gap is formed between the other two of four side edges of the diaphragm and the cap and is sealed by elastic sealing material. An acoustic space is provided between the diaphragm and the upper wall of the insulating cap. An opening edge of the four side walls of the insulating cap is bonded to the substrate. The metal plate is electrically connected to the first electrode section. The electrode disposed on the front surface of the substantially rectangular piezoelectric plate is electrically connected to the second electrode section.
    • 压电声部件包括具有前表面和后表面的基本为矩形的压电板的隔膜,设置在前表面上的电极,大致矩形的金属板,直接或者经由设置在基本上矩形的压电板的背面上的电极 基本为矩形的压电板的背面,具有上壁的绝缘盖,从上部延伸的四个侧壁,一对支撑构件,其布置成将隔膜支撑在彼此相对的四个侧壁中的两个的两侧的内侧 以及具有第一电极部和第二电极部的板状基板。 隔膜设置绝缘帽。 隔膜的四个侧边缘中的两个彼此相对并固定到一对支撑构件。 在隔膜和盖的四个侧边缘中的另外两个之间形成间隙,并且通过弹性密封材料密封。 在隔膜和绝缘盖的上壁之间提供声学空间。 绝缘盖的四个侧壁的开口边缘与基板结合。 金属板电连接到第一电极部分。 设置在大致矩形的压电板的前表面上的电极与第二电极部电连接。
    • 2. 发明授权
    • Piezoelectric electroacoustic transducer and manufacturing method of the same
    • US07020295B2
    • 2006-03-28
    • US10192493
    • 2002-07-11
    • Kazuaki HamadaMasayuki Fujino
    • Kazuaki HamadaMasayuki Fujino
    • H04R25/00
    • B06B1/0603
    • A piezoelectric electroacoustic transducer includes a substantially rectangular piezoelectric diaphragm having electrodes and flexurally vibrating in response to application of an alternating signal between the electrodes, a resin case having a supporting member disposed inside sidewalls of the case for supporting the diaphragm, terminals insert-molded in the case so as to have internal connections exposed in the supporting member and external connections exposed on the external surface of the case, a conductive adhesive for electrically connecting the electrodes of the diaphragm to the internal connections of the terminals, an elastic sealant for sealing a gap between the external periphery of the diaphragm and the internal periphery of the case, and a lid plate for closing an opening of the case. The terminals are pressed terminals, which are made by punching a metallic plate so that a flash-producing surface is to be the lower surface, and flashes on both respective side-edges of the internal connections are embedded inside the supporting member of the case so that the top surfaces of the internal connections are flush with the surface of the supporting member, and the external connections of the terminals are bent toward the bottom surface of the case via the side surfaces thereof.