| 摘要 |
A bottle cap assembly includes a mount, a hose unit connected to the mount, a mouthpiece unit and a dust cap. A lug is connected to the mount and the dust cap is pivotably connected to the lug. A tubular portion is located in the mount and has two spiral ribs. The mouthpiece unit includes a rotatable member, a seal ring and a mouthpiece. The rotatable member is engaged within the tubular portion and has spiral grooves with which the spiral ribs are engaged. The rotatable member has a knob and has a passage is defined therethrough. The seal member seals the mouthpiece unit when the rotatable member is located at the lowest position. When the knob is rotated, the spiral grooves moved upward along with the spiral rib and the passage is separated from the seal member to open the mouthpiece unit. |
