| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a nozzle prevented from being dissected when a valve body is opened, and a fluid discharge device provided with the nozzle.SOLUTION: A nozzle 9 includes a cylindrical body 91, and a plurality of petal-like valve bodies 92 which are arranged equally at a tip part of the cylindrical body 91, and opened and closed according to the internal pressure in the cylindrical body 91. The valve bodies 92 are in a diamond shape in side view, and connect with one another at adjacent vertices to be valley-folded along diagonals in a longer direction of the cylindrical body 91 respectively. End faces 922 corresponding to tip part sides of half bodies 921 of diamond shapes of the valve bodies 92 abut on end faces 922 of adjacent valve bodies 92, so that the four valve bodies 92 are closed. A rib 923 extending in a peripheral direction of the cylindrical body 91 is provided at base end parts (border parts) of end faces 922, 922 of two adjacent valve bodies 92. The rib 923 is in a channel shape in plan view, and arranged on the end faces 922, 922 with the inside of the channel shape directed to the center of the cylindrical body 91.</p> |
