Patent ID: 7583812

Claim:
An electro-acoustic converter comprising: a magnetic circuit; a frame bonded to the magnetic circuit; a diaphragm bonded to a circumferential edge of the frame; a voice coil attached to the diaphragm in a manner that a part thereof is located in a magnetic gap of the magnetic circuit; a terminal made of a sheet metal having spring property and electrical conductivity, a part of the terminal being fixed to the frame and electrically connected to the voice coil, the terminal having a bent portion and a contact portion for connection to an external circuit; and a stopper having adjacent portions that protrude from a surface of the frame where the contact portion of the terminal protrudes, a portion of the terminal being disposed between the adjacent portions of the stopper wherein the stopper is configured to restrict bending of the sheet metal constituting the terminal within a threshold value of reversibility of a material of the metal.