| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic vibrator in which output sound pressure is enhanced while suppressing generation of unnecessary noise vibration components or deterioration in durability due to deformation fatigue of a member. SOLUTION: First and second piezoelectric vibrators are arranged to be laminated on the substantially same axis through an intermediate supporting member while spaced apart from each other, the substantially annular intermediate supporting member is arranged on the outer edge of the first piezoelectric vibrator arranged on the underside, the second piezoelectric vibrator is bonded fixedly to the upper portion of the intermediate supporting member, and the first piezoelectric vibrator is secured by a column at the substantially central part of a diaphragm. COPYRIGHT: (C)2008,JPO&INPIT
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