Patent ID: 6678388
Filing Date: 2004-01-13
Classification: H04R

Abstract:
An electroacoustic transducer comprising:a base member made of magnetic material; a magnetic core made of magnetic material and provided erectly on the base member; a diaphragm made of magnetic material and supported with a gap between the diaphragm and a forward end of the magnetic core; a magnet constituting a magnetic circuit together with the base member, the magnetic core and the diaphragm to provide a magnetostatic field; a coil disposed around the magnetic core for applying an oscillating magnetic field to the magnetic circuit; a coil bobbin interposed between the magnetic core and the coil and molded integrally with the base member, for holding the coil; a housing member for receiving the base member, the magnetic core, the diaphragm, the magnet, the coil and the coil bobbin; a filler applied to an external surface side of the base member; and a terminal for supplying an electric current from an outside, wherein the terminal has a protrusion portion protruding to an internal surface side of the base member, and an end of the coil is connected to the protrusion portion of the terminal.