Patent ID: 6626262
Filing Date: 2003-09-30
Classification: H04R

Abstract:
A waterproof speaker comprising a yoke inside which a ring-shaped magnet that defines a through hole is retained, a center pole retained inside the yoke and protruding through the through hole of the magnet, a top plate defined with a center opening securely attached on a periphery of the yoke, wherein the center pole protrudes through the center opening of the top plate, a frame mounted on a front surface of the top plate, a cone-shaped diaphragm having a middle through-hole that mounts a bobbin and is enclosed by a cap, wherein the diaphragm has a rim portion attached to a forward end portion of the frame via an edge portion, wherein the bobbin is attached at a middle portion of the diaphragm and extending through the center opening of the top plate, a voice coil mounted around an outer periphery of the bobbin, wherein the improvement comprises:a waterproof damper adapted to be supported by the frame and defined with a hole adapted to allow extension of the bobbin, the waterproof damper is formed of two layers, wherein a first layer of the two layers is made of a cloth material and a second layer is made of a thin rubber slice, wherein thickness ratio of the first layer to the second layer is about 4:1.