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    • 71. 发明授权
    • Contactless buzzer
    • 非接触蜂鸣器
    • US4149153A
    • 1979-04-10
    • US694309
    • 1976-06-09
    • Youjiro ShigemoriYoshio Mitumori
    • Youjiro ShigemoriYoshio Mitumori
    • G10K1/067G10K9/13G08B3/10
    • G10K9/13G10K1/067
    • This invention relates to a contactless buzzer unit wherein audible signals are delivered by mechanical blows of a resonator membrane by an electromagnetically driven vibrator fed from an electronic circuit with oscillating voltage pulses. A base section is provided by an electromagnetic drive unit having an iron core and a drive coil fixedly mounted on a base plate, while a casing section is provided by an audio-signaling unit including the resonator membrane, a spacer and a vibrator assembled together and attached to a case member. Both these sections are assembled together and to the case member molded with plastic material into one piece which is provided with stud posts extending from two precisely formed and mutually parallel planes formed on the case member and serving for the assembly of these sections as guiding, positioning and fixing means.
    • 本发明涉及一种非接触式蜂鸣器单元,其中通过由具有振荡电压脉冲的电子电路馈送的电磁驱动振动器通过谐振器膜的机械吹送传送可听见的信号。 基座部分由具有铁芯和固定地安装在基板上的驱动线圈的电磁驱动单元提供,而壳体部分由包括谐振膜,间隔器和组装在一起的振动器的音频信号单元提供, 附在案件上。 这两个部分组装在一起,并与塑料材料一起模制成壳体部件,该壳体部件设置有从形成在壳体部件上的两个精确形成和相互平行的平面延伸的螺柱,用于将这些部分组装成导向,定位 和固定装置。