ELECTROMAGNETIC TRANSDUCER FOR GENERATING VIBRATIONS FOR SOUND AND/OR WORDS BONE CONDUCTION

摘要

An electromagnetic transducer for generating vibrations for sounds and/or words bone conduction which comprises a magnetic yoke comprising a ferromagnetic material base plate (2), a magnetic pole (3), a voice coil (4) positioned around the magnetic pole (3), a pair of permanent magnets (5) positioned outside the voice coil (4) and a vibrating diaphragm (8) of ferromagnetic material supported by the non-ferromagnetic support (7). Advantageously, such support (7) is supported by the base plate (2) by fastening brackets (8) that engage portions of the support (7) that project beyond the base plate (2) and exceed opposite ends of the base plate (2).