| 摘要 |
PURPOSE:To provide a cap mounting structure which does not allow the opening of a cap without following a fixed procedure, provided that the closing thereof is impossible when the cap is opened once. CONSTITUTION:A ring 3 is interposed free to turn between a mouth part 2 of a container 1 and a cap 4 while a one-way rotation means comprising wedge- shaped protrusions 8 and 13 is provided between the mouth part 2 and the ring 3. A protruded thread 28 of the cap is fitted into a groove 17 of the ring 3. It is so arranged that the cap turns together with the ring 3 when the cap 4 is turned in one way and the cap 4 is slipped upward at a position where it is shifted in the opposite direction to the ring 3. |
