ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC APPARATUS

Title:

ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC APPARATUS

Document Type and Number:

WIPO Patent Application WO/2014/024551

Kind Code:

A1

Abstract:

This invention addresses the problem of obtaining an acoustic generator having satisfactory sound pressure frequency characteristics. In order to resolve this problem, this acoustic generator (1) is provided with a piezoelectric element (exciter) (5), a vibrating body (3a), a frame body (support body) (2), and a damper (8). The piezoelectric element (5) vibrates upon having an electric signal inputted thereto. The piezoelectric element (5) is mounted on the vibrating body (3a), and the vibration of the piezoelectric element (5) causes the vibrating body (3a) to vibrate. The frame body (2) supports the vibrating body (3a). The damper (8) is provided so as to be in contact with both sections in a pair of sections that are adjacent to each other in a plan view and that have mutually different rigidities.

Inventors:

FUKUOKA SHUICHI (JP)
KUSHIMA NORIYUKI (JP)
HIRAYAMA TAKESHI (JP)
TAKAHASHI TOORU (JP)
MAKINO YUTAKA (JP)
ISHIHARA ATSUSHI (JP)
NINOMIYA HIROSHI (JP)
YAMAKAWA KENJI (JP)
MIYAZATO KENTAROU (JP)

Application Number:

PCT/JP2013/065293

Publication Date:

February 13, 2014

Filing Date:

May 31, 2013

Export Citation:

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Assignee:

KYOCERA CORP (JP)

International Classes:

H04R7/04; H01L41/083; H01L41/09; H04R1/28; H04R17/00

Domestic Patent References:

WO2009110575A1

2009-09-11

Foreign References:

JPH0165595U	1989-04-26
JP2009130663A	2009-06-11

Other References: