| 摘要 |
<P>PROBLEM TO BE SOLVED: To facilitate adjustment of a position of a vibration part with respect to a pair of magnets and a coil, and to enhance positional accuracy. <P>SOLUTION: An acoustic transducer comprises: a driving unit 2 which has the pair of magnets 6 and 6 arranged so as to face each other, a yoke 5 on which the pair of magnets are attached, a coil 7 to which a driving current is supplied, and an armature 9 in which the vibration part 14 that vibrates when the driving current is supplied to the coil, penetrates the coil to be arranged between the pair of magnets, and is fixed to the yoke; and a diaphragm unit 3 that has a holding frame 20 having an opening, a resin film 21 stuck to the holding frame in a state of covering the opening of the holding frame, a diaphragm 22 held inside the holding frame in a state of being stuck to the resin film, and a beam part 23 of which the both ends are respectively connected to the diaphragm and the vibration part of the armature so as to transmit vibration of the vibration part to the diaphragm; and a coil attachment part 12 provided in the armature, which has the coil mounted thereon and is located in a state that is parallel to the vibration part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
