| 摘要 |
PROBLEM TO BE SOLVED: To surely execute switching of communication and block by a valve body, arrange the valve body easily, and enhance molding property.SOLUTION: A communication cylinder 17 for communicating an injection hole 12 and a container body 1 is extended downward, on a top wall part 11 of a cap body 13. The communication cylinder 17 comprises therein: a valve body 22 disposed to vertically move freely, by self weight; a valve seat part 23 projecting from a lower end part of the communication cylinder 17, toward inside of a radial direction, and on which the valve body 22 seats; and a cylindrical state regulation cylinder 24 disposed between the injection hole 12 and the valve seat part 23, in which the valve body 22 can enter from a lower side. The regulation cylinder 24 comprises a contact hole 29 for communicating the inside of the regulation cylinder 24 and the injection hole 12, and an inner peripheral face of the regulation cylinder 24 gradually extends to inside of the radial direction as going to an upper side from a lower side, and in an inner peripheral face of the communication cylinder 17, respective parts being continuous from both sides of a vertical direction to the valve seat part 23, gradually extend to inside of the radial direction along the vertical direction as going to the valve seat part 23 side.SELECTED DRAWING: Figure 1 |
