| 摘要 |
PROBLEM TO BE SOLVED: To improve the work efficiency at the time of building up of a quantitative jetting mechanism, prevent an attaching error from generating, and also, increase a jetting amount at one time. SOLUTION: This jetting mechanism comprises respective constituent elements, a stem 2 having a hole part 5, which is urged upward, an internal sheath-shaped part 13 equipped with a quantitative chamber 10 and a stem guiding function, an external cylindrical part 12 which forms a space part 15 for the passing of a content, with the internal sheath-shaped part 13, a base part 17 for holding which holds the internal sheath-shaped part 13 and the external cylindrical part 12 and communicates between the space part 15 and the inside of the container, and a packing 4 which communicates between the space part 15 and the quantitative chamber 10 and at the same closes the hole part 5 under a non-used state by interlocking with the stem 2, and seals an area between the space part 15 and the quantitative chamber 10, and at the same time, communicates between the quantitative chamber 10 and a passage 2b for jetting by opening the hole part 5, under a used state. Then, the overall shapes of respective constituent elements are formed so as to become symmetrical concerning the central axis in the longitudinal direction respectively. Also, the internal sheathshaped part 13 and the external cylindrical part 12 are formed by a single article, and the quantitative chamber 10 is provided lower than the lower end 11a of a spring. |
