| 摘要 |
PROBLEM TO BE SOLVED: To abate the impact noise caused by a trigger-type liquid delivery apparatus to thereby improve the feeling in trigger operation. SOLUTION: This trigger-type liquid delivery apparatus is equipped with a cylinder which comprises an outer cylinder having an opening at its one end and a bottom wall at the other end and an inner cylinder having the same axis as the outer cylinder and attached integrally to the bottom wall; a piston which is slidable between the outer and inner cylinders in the direction of the axis of the outer cylinder; and an elastic member which is placed in between the piston and the inner cylinder and keeps the relative positions of them constant when the piston is unloaded. A liquid in a container is jetted from a nozzle head section by repeating the collision of the position by its sliding against the bottom wall followed by the returning action of the piston to the initial position caused by the recovery power of the elastic member. In this apparatus, a buffer member for reducing the impact noise due to the collision of the position with the bottom wall is attached to the piston or the bottom wall.
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