SOUND GENERATOR FOR AN ANTI-NOISE SYSTEM FOR INFLUENCING EXHAUST NOISE AND/OR INTAKE NOISE OF A MOTOR VEHICLE

摘要

A sound generator 103 for an anti-noise system for influencing sound waves propagating in exhaust systems or intake systems of vehicles driven by an internal combustion engine includes a loudspeaker basket 123, a membrane 122 supported by the loudspeaker basket 123, a permanent magnet 121 supported by the loudspeaker basket 123, a voice coil 126 supported by a voice coil carrier 125 and a membrane stop 150. The voice coil 126 is located within a constant magnetic field generated by the permanent magnet 121. The voice coil carrier 125 is supported by the membrane 122. The membrane stop 150 is located on the loudspeaker basket 123 adjacent to the membrane 122. The membrane stop 150 includes a projection 151 extending towards the membrane 122. An anti-noise system using the sound generator and a vehicle using the anti-noise system are also provided.

主权项

1. A sound generator for an anti-noise system for influencing sound waves propagating through an intake system or an exhaust system of vehicles driven by an internal combustion engine, the sound generator comprising:
a loudspeaker basket; a membrane supported by the loudspeaker basket; a permanent magnet supported by the loudspeaker basket; a voice coil carrier supported by the membrane; a voice coil supported by the voice coil carrier, the voice coil being disposed in a constant magnetic field created by the permanent magnet; and a membrane stop, wherein: the membrane stop is located on the loudspeaker basket adjacent to the membrane; and the membrane stop comprises a projection extending towards the membrane.