| 摘要 |
PROBLEM TO BE SOLVED: To certainly prevent water from invading a container body, in a structure wherein an operation jet part is scarwed and secured to the inner surface of a guide cylinder in the push-down state of the operation jet part, by providing a spiral ridge extending from an upper end part of the inner surface of the hide cylinder downward for securing the operation jet part so as. SOLUTION: A pump 1 equipped with a fixed suction part 2 sucking up liquid in a container body and an operation jet part 3 jetting the liquid in the suction part 2 top the outside jets the liquid in the fixed suction part 2 from a nozzle hole of a head 21 through a stem 19 by the vertical movement of the operation jet part 3. At this time, the operation jet part 3 is engaged in a pushed-down state by screwing a spiral ridge 27 provided on the inner surface of a guide cylinder 8 with a spiral ridge 28 provided on the outer periphery of a vertical cylinder of the head 21 and, in this push-sown state, the spiral ridge 27 securing the operation jet part 3 screwed on the guide cylinder 8 is provided so as to extend from the upper end part of the inner surface of the guide cylinder 8 downwardly. By this constitution, when the operation jet part 3 is in an upward protruding state, the invasion of water from a gap between the guide cylinder 8 and the outer surface of the stem 19 is prevented. |
