Patent ID: 6714655
Filing Date: 2004-03-30
Classification: H04R

Abstract:
A speaker, comprising:a frame; a magnetic circuit fixed to the frame; a diaphragm fixed to the frame so as to be capable of vibrating in a predetermined direction; a driving force transmitting member connected to the diaphragm; and a first damper and a second damper for supporting the driving force transmitting member, wherein the magnetic circuit is positioned between a first plane and a second plane, the first plane being parallel to the diaphragm and defined as a plane with which at least a portion of the magnetic circuit is in contact, and the second plane being parallel to the diaphragm and defined as a plane with which at least a portion of the magnetic circuit is in contact, the driving force transmitting member has a region in which a voice coil is formed, the driving force transmitting member is structured so as to transmit to the diaphragm, a driving force, in the predetermined direction, caused by an effect of an electric current flowing through the voice coil and a magnetic flux generated from the magnetic circuit; one end of the first damper is connected to the driving force transmitting member at a first damper position between the first and second planes, and an other end of the first damper is connected to the frame at another first damper position between the first and second planes, and one end of the second damper is connected to the driving force transmitting member at a second damper position between the first and second planes, and an other end of the second damper is connected to the frame at another second damper position between the first and second planes.