Patent ID: 6513623
Filing Date: 2003-02-04
Classification: H04R

Abstract:
A speaker comprising:a diaphragm; a magnetic circuit unit defining a cylindrical magnetic gap; a voice coil having a first portion fixed to the diaphragm and a second portion placed in the cylindrical magnetic gap; and a frame for supporting the outer periphery of the diaphragm, wherein the frame comprises an annular ring formed along with the shape of the outer periphery of the diaphragm and a mounting portion extending radially outward from the magnetic circuit unit; and the ring and the mounting portion are caulked-jointed to each other with the diaphragm clamped therebetween, wherein a caulking portion is formed on a lower surface of the ring, so that an annular flat portion of the mounting portion fits between the lower surface and the caulking portion of the ring.