Patent ID: 6690809
Filing Date: 2004-02-10
Classification: H04R

Abstract:
A microspeaker comprising:a case comprising an assembled upper case and an assembled lower case; the assembled lower case having a lower case portion, a yoke made of a magnetic material and secured to the lower case portion, a permanent magnet secured to the yoke, and a pair of terminal plates secured to the underside of the lower case portion; the assembled upper case having an upper case portion with an annular peripheral wall, a vibrating plate secured to the upper case portion, a voice coil secured to an underside of the vibrating plate, and a protector plate secured to the peripheral wall; and means for securing the assembled upper case to the assembled lower case; the voice coil having a pair of ends outwardly extended from the coil, each of the ends being secured to an underside of the vibrating plate, passed through a groove formed in the peripheral wall of the upper case, and through a peripheral wall of the lower case, and connected to one said terminal plate.