Patent ID: 8213671
Filing Date: 2012-07-03
Classification: H04R

Abstract:
1. A speaker comprising: a vibrating element; a drive unit vibrating the vibrating element; and a frame supporting said vibrating element and said drive unit, wherein said vibrating element comprises a front face region and a connecting region connecting said front face region to said drive unit, said front face region has a convex-shaped cross-sectional portion and an annular concave-shaped cross-sectional portion arranged outside said convex-shaped cross-sectional portion, said convex-shaped cross-sectional portion and said concave-shaped cross-sectional portion form a continuously curved face, said front face region is supported by said connecting region at a position outside said concave-shaped cross-sectional portion, a part of said front face region supported by said connecting region forms said continuously curved face inclined in a direction toward said connecting region supporting said front face region from an outer periphery portion of said front face region, and a distance between said concave-shaped cross-sectional portion and said convex-shaped cross-sectional portion in a radial direction of said vibrating element is larger than a distance between said concave-shaped cross-sectional portion and said convex-shaped cross-sectional portion in a vibrating direction of said vibrating element.