| 摘要 |
PURPOSE:To obtain the sound producing body which is decreased in the number of parts and the man-hours for assembly, is highly in mass productivity and is substantially free from the failure, crack, etc., of a piezoelectric vibrator. CONSTITUTION:An external body 1 is constituted of a resin molding which has internally cavities 11, 12 and has holes 13, 14 connecting from the inside of the cavities 11, 12 to the outside in the respective thick parts facing each other. The piezoelectric vibrator 2 is joined onto a diaphragm 3. This diaphragm 3 is disposed within the cavities 11, 12 of the external body 1 and its periphery is embedded and supported into the thick parts of the external body 1. The cavities 11, 12 are bisected in the directions where the holes 13, 14 exist. |
