Patent ID: 7292695

Claim:
A bone conductive speaker comprising a yoke ( 2 ), a magnet ( 3 ) disposed in a central area of said yoke, and a voice coil ( 4 ) wound on, and encircling, said magnet ( 3 ), wherein: said yoke ( 2 ) has its peripheral area divided into a plurality of upright portions; of said upright portions, each of a pair of first ones ( 5 ) oppositely disposed from each other is provided with a first engaging means in its upper surface; a pair of second engaging means each corresponding to said first engaging means are provided in a vibrating plate ( 7 ); said vibrating plate ( 7 ) is mounted on a lid portion ( 1 b ) of a housing ( 1 ) in a manner such that said vibrating plate ( 7 ) is disposed on said upright portions of said yoke ( 2 ) and fixedly mounted by means of said second engaging means in a manner such that said vibrating plate ( 7 ) floats in said housing ( 1 ), and further wherein: said first engaging means provided in said upper surface or said upright portion of said yoke is constructed of a concave portion or a convex portion; and, said second engaging means provided in said vibrating plate is constructed of a convex portion or a concave portion, which said convex portion or said concave portion of said vibrating plate correspond to said concave portion or said convex portion of said first engaging means of said yoke, respectively.