公开(公告)号：EP2941015A4

公开(公告)日：2016-08-17

申请号：EP13867808

申请日：2013-12-21

申请人： KYOCERA CORP

发明人： MIYAZATO KENTAROU ,  FUKUOKA SHUICHI ,  KUSHIMA NORIYUKI ,  HIRAYAMA TAKESHI ,  TAKAHASHI TOORU ,  MURAHASHI MASATO

IPC分类号： H04R7/04 ,  H04R7/18 ,  H04R17/00

CPC分类号： H04R17/00 ,  H04R7/04 ,  H04R7/18

公开(公告)号：EP2884765A4

公开(公告)日：2016-03-02

申请号：EP13827226

申请日：2013-05-31

申请人： KYOCERA CORP

发明人： FUKUOKA SHUICHI ,  KUSHIMA NORIYUKI ,  HIRAYAMA TAKESHI ,  TAKAHASHI TOORU ,  MAKINO YUTAKA ,  ISHIHARA ATSUSHI ,  NINOMIYA HIROSHI ,  YAMAKAWA KENJI ,  MIYAZATO KENTAROU

IPC分类号： H04R7/04 ,  B06B1/06 ,  G10K11/00 ,  H01L41/083 ,  H01L41/09 ,  H04R1/28 ,  H04R17/00

CPC分类号： H04R17/00 ,  B06B1/0611 ,  G10K11/002 ,  H04R1/00 ,  H04R7/04 ,  H04R2400/11

摘要： An object is to provide an acoustic generator with excellent sound pressure frequency characteristics. To achieve such an object, an acoustic generator (1) according to one embodiment includes a piezoelectric element (exciter) (5), a vibrating body (3a), a frame (support) (2), and a damper (8). The piezoelectric element (5) receives an input of an electrical signal and is caused to vibrate. The piezoelectric element (5) is mounted on the vibrating body (3a), and the vibrating body (3a) is caused to vibrate by the vibration of the piezoelectric element (5). The frame (2) supports the vibrating body (3a). The damper (8) is provided contacting with both of a pair of two adjacent portions with different stiffnesses in a plan view.