Patent ID: 7577270
Filing Date: 2009-08-18
Classification: H04R

Abstract:
1. A dome-shaped diaphragm of a speaker comprising: a dome part which is formed in a dome-like shape and is convex forward in an oscillating direction that is a forward direction of sound travel when emitted from the speaker; a neck part connected to an outer periphery of the dome part for fixing a voice coil bobbin thereto; and an edge including a roll part which is formed in a curved shape, convex forward in the oscillating direction, and continued to the neck part at an inner peripheral edge thereof, and a flange part which is provided at an outer peripheral edge of the roll part to be fixed to a speaker frame; wherein the neck part is provided with a curved portion which is convex backward in the oscillating direction, and an outer periphery of the curved portion is continued to an inner periphery of the roll part, and wherein an inner periphery of the curved portion is connected to an outer face of the voice coil bobbin.