Patent ID: 9485582
Filing Date: 2016-11-01
CPC Classification: H04R

Claim Text:
1. A speaker comprising: a diaphragm; an edge, which has an inner circumferential portion connected to an outer circumferential portion of the diaphragm, and is made of an annular elastic deformation member; a frame, which is connected to an outer circumferential portion of the edge, and supports the diaphragm through the edge; a magnetic circuit, which displaces the diaphragm in a first direction that is a sound emission direction and in a second direction that is an opposite direction to the sound emission direction, and vibrates the diaphragm, and at least one rib, which is provided on a back side of the edge and in a region between the inner circumferential portion and outer circumferential portion of the edge, the back side being a side facing the second direction, the at least one rib protruding in the second direction from the back side, and the at least one rib being configured to limit a stroke of the diaphragm in the second direction when the diaphragm is displaced in the second direction.