PIEZOELECTRIC TYPE ELECTROACOUSTIC TRANSDUCER AND ELECTRONIC APPARATUS

• Main Authors: SUGII DAISUKE, ONISHI YASUHARU, KOMODA MOTOYOSHI, KURODA ATSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 18.12.2014
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

PROBLEM TO BE SOLVED: To provide a small piezoelectric type electroacoustic transducer which achieves high sound quality and has an impact stability, and to provide an electronic apparatus.SOLUTION: A piezoelectric type electroacoustic transducer includes: a metal plate 12 having a groove part 12a on a main surface; a first elastic member 13 buried in the groove part; a piezoelectric film 14 joined to the metal plate and the first elastic member on the main surface of the metal plate; a frame 10 having a through slot 10a; and a second elastic member 11 which is joined to the metal plate and a wall surface of the through slot. The first elastic member is disposed at a position that is overlapped with at least an end part of the piezoelectric film when viewed from the upper side of the main surface of the metal plate. 【課題】小型かつ高音質で衝撃安定性を有する圧電型電気音響変換器及び電子機器を提供すること。【解決手段】主面に溝部１２ａを有する金属板１２と、前記溝部に埋め込まれた第１弾性部材１３と、前記金属板の前記主面上にて前記金属板及び前記第１弾性部材に接合された圧電体膜１４と、貫通口１０ａを有するフレーム１０と、前記金属板と接合するとともに前記貫通口の壁面と接合する第２弾性部材１１と、を備え、前記第１弾性部材は、前記金属板の前記主面の上側から見て、少なくとも前記圧電体膜の端部と重なる位置に配設される。【選択図】図１