| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve a workability in assembling a beam part of an acoustic transducer. <P>SOLUTION: An acoustic transducer is provided with a drive unit 2 including a pair of magnets 6,6, a york 5 having the pair of magnets attached therein, a coil 7 to which driving current is supplied, an armature 9 having a vibration part 14 which oscillates when driving current is supplied to the coil and arranged between the pair of magnets penetrating through the coil; and a diaphragm unit 3 including a holding frame 20 having an opening, a resin film 21 attached on the holding frame in a state of covering the opening of the holding frame, a diaphragm 22 being held inside the holding frame in a state attached to the resin film, and a beam part 23, which is formed integrally with the diaphragm and whose tip is connected to the vibration part of the armature, to transmit oscillation of the vibration part to the diaphragm. <P>COPYRIGHT: (C)2012,JPO&INPIT |
