| 摘要 |
A loudspeaker diaphragm 104 affixed with a coil 103 includes an edge portion located outside of a portion affixed with the coil 103 and a center portion located inside of the portion affixed with the coil 103. The center portion is provided thereon with ribs 202. With these ribs 202, the height of the center portion can be limited to the height of the ribs 202. Therefore, it is possible to save a space of a loudspeaker where the loudspeaker diaphragm is placed, thereby slimming down the loudspeaker. Furthermore, with these ribs, the rigidity of the center portion can be improved without using a conventional solution of forming, for example, a dome shape on the center portion.
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