STRUCTURE OF MOUTHPIECE IN FLUID DISCHARGING MECHANISM

摘要

PROBLEM TO BE SOLVED: To prevent a fluid discharged from a mouthpiece of a fluid discharge mechanism from being left in the mouthpiece. SOLUTION: A discharging hole for a fluid 10 is located at the lowest part of a mouthpiece 1 provided with concave shaped grooves 7 which guide a shutter 2. The discharging hole 10 is placed at the front side of the lower end part of the grooves 7 and is opened and closed by the shutter 2, and discharges the fluid while opening. The depth of the discharging hole 10 is gradually shortened from the upper part to the lower part at the end part of the front surface of the mouthpiece 1, and a tapered surface is formed in such a shape that the lower end part of the edge 10a of the discharging hole 10 is cut.