| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a drive element of a diaphragm for a speaker in which a vibration amount of the diaphragm can be increased with respect to an operation amount of a voice coil without increasing a thickness in the radiating direction of a sound, and to provide the speaker using that drive element. <P>SOLUTION: The speaker 11 comprises an arcuate main drive element 10 made of a resilient material, a drive section X including a magnetic circuit 16 composed of a yoke, a magnet and a plate, and a voice coil 18 and a damper 17 arranged on the periphery of the magnetic circuit 16, a frame 20 attached with the drive section X, and a diaphragm 21 secured to the frame 20 wherein the main drive element 10 is coupled, with a bobbin 19 and secured, at one end thereof and on the upper surface at the central part thereof, the central part of the vibration cone 21 is fixed. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
