Ultrasonic vibration apparatus

Abstract

An ultrasonic vibration apparatus includes a vibrator including at least two vibration elements, at least three electrode portions, a bridging portion and an anti-vibration portion. The vibration elements are configured to generate ultrasonic vibration. The vibration elements and the electrode portions are alternately arranged side by side in a vibrating direction. The electrode portions include at least two first electrode portions and at least one second electrode portion alternately arranged in the vibrating direction. The vibrator integrally vibrates ultrasonically in the vibrating direction when the driving voltage is applied to the first and second electrode portions. The bridging portion couples and electrically connects the first electrode portions with each other. The anti-vibration portion is configured to suppress vibration of the bridging portion in any other direction-except the vibration direction and configured to cover the entire vibrator including the bridging portion.

1 . (canceled) 
     
     
         2 . An ultrasonic vibration apparatus comprising:
 a vibrator, wherein the vibrator includes:   at least two vibration elements configured to generate ultrasonic vibration when a driving voltage is applied to the vibration elements;   at least three electrode portions wherein the vibration elements and the electrode portions are alternately arranged side by side in a vibrating direction, the at least three electrode portions include at least two first electrode portions and at least one second electrode portion alternately arranged in the vibrating direction, the vibrator integrally vibrates ultrasonically in the vibrating direction when the driving voltage is applied to the first electrode portions and the second electrode portion;   a bridging portion coupling and electrically connecting the two first electrode portions of the at least two first electrode portions with each others; and   an anti-vibration portion configured to suppress vibration of the bridging portion in any other direction except the vibrating direction and configured to cover the entire vibrator including the bridging portion.   
     
     
         3 . The ultrasonic vibration apparatus according to  claim 2 , wherein the anti-vibration portion includes a tubular fitted-outside member. 
     
     
         4 . The ultrasonic vibration apparatus according to  claim 3 , wherein the fitted-outside member includes a heat-shrinkable tube. 
     
     
         5 . The ultrasonic vibration apparatus according to  claim 2 , further comprising a housing portion housing the vibrator,
 wherein the anti-vibration portion includes an anti-vibration liquid filled into the housing portion.   
     
     
         6 . The ultrasonic vibration apparatus according to  claim 5 , wherein the anti-vibration liquid includes silicone oil.