Title:
圧電発音部品、及びその製造方法
Document Type and Number:
Japanese Patent JP6521417
Kind Code:
B2
Abstract:
A piezoelectric sounding component includes a diaphragm that includes a metal plate and a piezoelectric body formed on the metal plate. A casing includes a bottom wall and side walls defining an open sound chamber. The casing also includes a supporting portion on which the diaphragm is supported to cover the open end of the chamber. A terminal is formed on the casing and serves to apply voltage to the diaphragm. An elastic adhesive fixes the diaphragm to the supporting portion and a conductive adhesive is formed on the elastic adhesive and electrically connects the terminal and the diaphragm. An elastic sealing material forms a frame-like sealing portion that seals a gap between outer peripheral edges of the diaphragm and an inner surfaces of the casing. The elastic sealing material also used to cover at least part of an exposed surface of the piezoelectric body to form a protective portion that protects the surface of the piezoelectric body. The protective portion contacts the sealing portion.
Inventors:
Yamada Kazuchika
Yamauchi Masakazu
Yokoi Takeyuki
Yamauchi Masakazu
Yokoi Takeyuki
Application Number:
JP2018516200A
Publication Date:
May 29, 2019
Filing Date:
May 22, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
G10K9/122; G10K9/22; H04R7/04; H04R17/00; H04R31/00
Domestic Patent References:
| JP2004015767A | ||||
| JP2007251516A |
Foreign References:
| WO2016067707A1 | ||||
| WO2011105046A1 | ||||
| WO2007097077A1 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Mutsumi Sato
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Mutsumi Sato