公开(公告)号：US06484844B2

公开(公告)日：2002-11-26

申请号：US09791864

申请日：2001-02-26

申请人： Shigeru Sugiyama ,  Hajime Kitamura ,  Naohiro Fujinami ,  Masami Kushida ,  Hisashi Kubota

发明人： Shigeru Sugiyama ,  Hajime Kitamura ,  Naohiro Fujinami ,  Masami Kushida ,  Hisashi Kubota

IPC分类号： H04R906

CPC分类号： H04R9/04

摘要： By forming a flange portion (16a1) protruding inward in the radial direction at an upper end portion (16a) of a voice coil (16), a coiling sectional shape of the voice coil (16) is set to a L-shape. And, the upper end portion (16a) of this voice coil (16), is bonded and fixed to a central flat portion (12b) of a diaphragm (12). Hereby, by only increasing slightly the weight of the usual voice coil having an I-shaped coiling section, the large bonding area can be obtained between the voice coil (16) and the diaphragm (12), so that separation of the voice coil (16) can be prevented. Further, since other portions of the voice coil (16) than the upper end portion (16a) thereof have the usual coil thickness, it is not necessary to expand the width of a cylindrical magnetic gap G in a magnetic circuit unit (18), whereby it is prevented that electroacoustic conversion efficiency of a speaker (10) lowers.

摘要翻译： 通过形成在音圈（16）的上端部（16a）沿径向向内突出的凸缘部（16a1），将音圈（16）的卷绕截面形状设定为L字形。 并且，该音圈（16）的上端部分（16a）被接合并固定在隔膜（12）的中央平坦部分（12b）上。 因此，通过仅轻微地增加具有I形卷绕部分的通常音圈的重量，可以在音圈（16）和隔膜（12）之间获得大的接合面积，使得音圈 16）。 此外，由于音圈（16）的其他部分比其上端部分（16a）具有通常的线圈厚度，所以不需要在磁路单元（18）中扩大圆柱形磁隙G的宽度， 从而防止扬声器（10）的电声转换效率降低。