PIEZOELECTRIC SOUNDER AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To obtain a piezoelectric sounder where its terminal metallic fixture can be fitted to a case without decreasing the volume of a chamber formed between a piezoelectric vibrating element and a bottom wall of the case. SOLUTION: First and second terminal metallic fixtures 17, 19 are placed so that 2nd connection parts 17e, 19e are curved along an imaginary plane orthogonal to an upper face 13a of a bottom wall 13. Middle parts 17c, 19c of the first and second terminal metallic fixtures 17, 19 are imbedded in the wall bottom 13 so as to be placed lower than the upper face 13a of the bottom wall 13 of the case.