| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology of further enhancing the drive efficiency of a loudspeaker having low distortion. SOLUTION: A loudspeaker comprises a frame 5; a magnetic circuit 1 supported by the frame 5; a voice coil body 2 disposed movably, with respect to a magnetic gap 8 provided in the magnetic circuit 1; a diaphragm 3, of which the outer circumferential part is connected to the frame 5 via a first edge 4 and the inner circumferential part is connected to the voice coil body 2; a damper 10 which is provided on a side of the magnetic circuit 1, rather than at the diaphragm 3 and of which the inner circumferential part is connected to the voice coil body 2; and a second edge 11a, connecting the outer circumferential part of the damper 10 to the frame 5. The second edge 11a protrudes on a side of the diaphragm 3 or on the opposite side thereof, and a third edge 11c, having a protruding structure at least opposite to the protruding direction of the second edge 11a is overlapped on the second edge 11a. COPYRIGHT: (C)2007,JPO&INPIT
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