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    • 3. 发明授权
    • Hearing aid with large diaphragm microphone element including a printed circuit board
    • 助听器大型隔膜话筒元件包括印刷电路板
    • US07003127B1
    • 2006-02-21
    • US09477700
    • 2000-01-06
    • Walter P. SjursenDerek D. MahoneyJohn M. MargicinFrederick J. FritzJohn G. AcetiDavid A. PrevesPonnusamy Palanisamy
    • Walter P. SjursenDerek D. MahoneyJohn M. MargicinFrederick J. FritzJohn G. AcetiDavid A. PrevesPonnusamy Palanisamy
    • H04R25/00
    • H04R19/016H04R25/00H04R25/60H04R25/604H04R25/65
    • A disposable-type hearing aid uses a relatively large single diaphragm or a large single diaphragm subdivided into a plurality of smaller active diaphragm areas obtained using a grate-like back support plate with ridges which contact and divide the diaphragm into the several smaller active diaphragm areas. The diaphragm and a backplate are enclosed in a metal housing and are disposed proximal and parallel to a shell-like hearing aid enclosure having sound inlets. The metal housing is closed at an end opposite the sound inlets by a printed circuit board (PCB) forming an acoustical seal for a back volume of the microphone. The PCB also carries substantially all the electronic components for the hearing aid thereon. The PCB has a ground plane in contact with the housing whereby the PCB also acts as an EMI shield. An electrical connection is formed in various ways between the back support plate and the PCB during assembly of the metal housing and components with the PCB. Mass production of disposable hearing aids with large diaphragms and relatively low noise levels is thus possible using this invention.
    • 一次性助听器使用相对较大的单个隔膜或大的单个膜片,其被细分为多个较小的活动隔膜区域,该区域使用格栅状的后支撑板,其具有将隔膜接触并分隔成若干更小的活动隔膜区域 。 隔膜和背板封装在金属外壳中,并且靠近并平行于具有声音入口的壳状助听器外壳。 通过形成用于麦克风的后部体积的声学密封的印刷电路板(PCB),金属外壳在与入口相对的端部封闭。 PCB还基本上承载所有用于助听器的电子部件。 PCB具有与壳体接触的接地平面,由此PCB还用作EMI屏蔽。 在金属外壳和部件与PCB的组装期间,在后支撑板和PCB之间以各种方式形成电连接。 因此,使用本发明可大量生产具有大膜片的一次性助听器和相对低的噪音水平。