| 摘要 |
PURPOSE: To provide an automatic opening and closing device of a paste container having a simple structure and high reliability in use. CONSTITUTION: A dispensing duct 4 of a compressible tubular container 1 has two openings 11, 12 forming an intersection aperture 13, a piston 17 slides in a first portion 11, and closes the intersection aperture 13 when at rest, and the intersection aperture 13 is opened when the container 1 is squeezed for forcing the paste to the first portion 11. The piston 17 is connected to the elastic arms 8, 9 supporting a plate element 7 covering an outlet orifice 6 distributing the paste, through a rod 18. The movement of the piston 17 opens the outlet orifice 6, and accumulates the energy in the arms 8, 9 for automatically returning the outlet orifice 6 to its closed position. |
