PROBLEM TO BE SOLVED: To provide an ultrasonic atomization device capable of always stable atomization by allowing a vibration plate to abut and support on the upper end surface whole surface of a liquid absorption material by uniform pressing force with a simple structure.SOLUTION: An ultrasonic atomization device is formed in a structure that having a liquid storage container 3 having a liquid absorption material 4 in a case body 1, and an annular ring-shaped holder 6 for fixing a vibration plate 5a and a piezoelectric vibrator 5b is arranged on the lid body 2 side of the case body 1, and a boss 17 provided in an arm piece 16 projected in the annular ring-shaped holder 6, is vertically movably loosely fitted in a vertically long guide hole 20 projected in a bearing piece 19 suspended from the lid body 2 side, and rash action in the circumferential direction of the annular ring-shaped holder 6 is suppressed, and an under surface of the vibration plate 5a is always allowed to abut and support on the upper end surface whole surface of the liquid absorption material 4 by uniform pressing force by dead weight of the annular ring-shaped holder 6.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】 簡単な構造によって振動板を吸液材の上端面全面に均一な押圧力でもって当接、支持させて常に安定した霧化を可能にすることができる超音波霧化装置を提供する。【解決手段】 ケース体1内に吸液材4を有する液体収容容器3を備える一方、振動板5aと圧電振動子5bとを固着している円環状ホルダー6をケース体1の蓋体2側に配して、円環状ホルダー6に突設している腕片16に設けたボス17を蓋体2側から垂設した軸受片19に穿設している縦長のガイド孔20に上下動自在に遊嵌させて、円環状ホルダー6の周方向の妄動を抑止すると共に上記振動板5aの下面を常時,円環状ホルダー6の自重によって上記吸液材4の上端面全面に均一な押圧力でもって当接、支持させた構造としている。【選択図】 図1
