Patent ID: 6704430
Filing Date: 2004-03-09
Classification: H04R,H05K

Abstract:
An electroacoustic transducer adapted to be mounted on a printed circuit board comprising:a casing; a terminal plate fixed to the casing at a position away from a casing surface opposite the printed circuit board; and a coil spring for making electrical connections between the terminal plate and a conductive portion of the printed circuit board when the electroacoustic transducer is mounted on the printed circuit board; wherein, a cylindrical recess is formed on the casing so as to extend from the casing surface to the terminal plate; the coil spring has a coil length longer than that of the cylindrical recess by a predetermined dimension, and a coil diameter smaller than the inner diameter of the cylindrical recess by a predetermined dimension; the coil spring is accommodated and supported in the cylindrical recess while it is fixed to neither the terminal plate nor the casing; and the coil spring is horizontally shifted until the coil portion hits against a wall of the cylindrical recess when horizontal displacement occurs in the coil spring.