| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a cap in which a valve body is smoothly moved, and air receiver is hardly generated, and which is easily used. <P>SOLUTION: The valve body 76 can be smoothly rolled by making a rolling face 78 on which the valve body 76 is rolled, into a straightly extended stepless face. In addition, air receiver is not generated in a flow path body 74 by avoiding a step difference on a butt face between a flow path 74B facing the rolling face 78 and a flow path 44A of a discharging cylinder 44. Therefore, even at the early stage of discharging, a balloon caused by air receiver is hardly formed at the apex part of the discharging cylinder 44. In addition, by making the valve body 76 into a sphere, and providing a flat packing 72 for holding the valve body 76 in an inlet opening of the flow path body 74, a liquid leakproof performance is improved to result in no leakage. In addition, as a flow path 66A of a small cylinder part 66 is closed, air is prevented from entering into a container 56 to prevent a liquid from being oxidized. <P>COPYRIGHT: (C)2004,JPO |
