LOUDSPEAKER AND MOBILE DEVICE INCORPORATING SAME

摘要

In the present invention, a loudspeaker is provided with a diaphragm, a voice coil body, and a magnetic circuit. A first face of the diaphragm is the surface of a concavity configured from a thin-wall part and a thick-wall part formed around the thin-wall part. The voice coil body has a bobbin and a voice coil. The bobbin has a first end connected to the thin-wall part on the first face of the diaphragm and a second end formed on the other side of the first end. The magnetic circuit has an inside part, an outside part, and a magnetic gap. Part of the inside part having a first face is disposed inside the bobbin from the second end of the bobbin, and the first face of the inside part and the first face of the outside part are disposed inside the concavity so that the voice coil is disposed inside the magnetic gap.