Patent ID: 8620017
Filing Date: 2013-12-31
Classification: H04R

Abstract:
1. A speaker comprising: a magnet; an inner-magnet-type magnetic circuit provided with a yoke that is formed in a substantially flat plate and is disposed on one pole of said magnet; a voice coil disposed close to an end of said magnet; and a diaphragm supporting said voice coil in place close to the end of said magnet while allowing the voice coil to vibrate, wherein said diaphragm includes: said magnetic circuit includes a space formed in the outer periphery side of said diaphragm with respect to said coil; the space is formed by at least said magnet and said yoke disposed at the outer periphery side of said diaphragm with respect to said magnet, and said vibrating section extends from a lower end portion of said voice coil toward the outer periphery of said diaphragm and passes through the space.