Patent ID: 7339291
Filing Date: 2008-03-04
Classification: B06B

Abstract:
1. An ultrasonic vibration device comprising: an ultrasonic transducer; and an electromagnetic coil disposed to surround the ultrasonic transducer and configured to vibrate the ultrasonic transducer by controlling a size of a magnetic field to be applied, wherein the ultrasonic transducer comprising: a magnetostrictive rod of a columnar shape made of a magnetostrictive member; a vibration plate made of a plate member having a larger diameter than a diameter of the magnetostrictive rod, the vibration plate being adhered and fixed to an end surface in an axial direction of the magnetostrictive rod, the single electromagnetic coil is provided with the multiple ultrasonic transducers, and the multiple ultrasonic transducers are arranged in a circumferential direction of the electromagnetic coil.