| 摘要 |
PURPOSE:To make a released substance into a fine bubble state and prevent leakage of the content liquid by a method wherein the piston chamber of a piston mechanism is arranged integrally with a cover, the piston chamber forms a flow passage through an inflow port from a container arranged to a cylinder part, and a flow passage is made to communicated with the injection nozzle of an injection head part. CONSTITUTION:When a press button type injection head part 2 is pressed against the force of a spring, a piston part 4 is lowered in a manner to be guided by a cylinder part 3 of a piston mechanism 4, and the volume of a piston chamber 19 comprising the cylinder part 3 and the piston part 4 is reduced. A content in the piston chamber is raised through a through-hole formed in the central part of the piston 4 part. However, in this case, the content is brought into contact with air sucked through a peripheral edge part 13 of a piston head part an on-off valve 12 for intake air and forms a bubble-like substance for injection. This constitution causes injection of a released substance through an injection nozzle 22 to the outside in a fine bubble state. |
