ULTRASONIC WAVE VIBRATOR

摘要

PROBLEM TO BE SOLVED: To provide an ultrasonic wave vibrator that can oscillate an ultrasonic wave with an isotropic directivity and easily be manufactured at a low cost. SOLUTION: A piezoelectric element 8 is placed on an inner face of an enclosed face 1a of a case body 1 whose one end face is open and the other end face is closed in this ultrasonic wave vibrator. The ultrasonic wave vibrator A generates an ultrasonic wave in the enclosed face 1a with an isotropic directivity. The case body 1 consists of a metallic case 2 formed with a metal- made plate 13 and of a resin case 3 made of a synthetic resin material.