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    • 8. 发明授权
    • Earphone
    • 耳机
    • US08891799B2
    • 2014-11-18
    • US12478765
    • 2009-06-04
    • Takashi FujikuraKazunori Ishizaka
    • Takashi FujikuraKazunori Ishizaka
    • H04R25/00H04R1/10
    • H04R1/1091
    • An earphone includes a cylindrical portion having an opening in one end and an audio output unit which outputs sound from one face. The audio output unit is fixed to the cylindrical portion such that another face is in contact with an end face of the one end of the cylindrical portion. The audio output unit and the cylindrical portion are insertable at least partially in the external auditory canal of a human being. The earphone further includes a thin-wall part provided in the cylindrical portion and a ring, made of a material of a greater specific gravity than the cylindrical portion, which is fixed to the inner surface. The ring is fixed in a position such that the ring overlaps in the axial direction of the cylindrical portion with respect to the thin-wall part.
    • 耳机包括在一端具有开口的圆柱形部分和从一个面输出声音的音频输出单元。 音频输出单元固定到圆柱形部分,使得另一个面与圆柱形部分的一端的端面接触。 音频输出单元和圆柱形部分至少部分地可插入人的外耳道中。 耳机还包括设置在圆筒形部分中的薄壁部分和由比固定在内表面上的比圆柱形部分更大比重的材料制成的环。 环被固定在使得环相对于薄壁部在圆筒部的轴向上重叠的位置。