| 摘要 |
The invention discloses an unequal expansion bottle stopper which comprises a cover plate and an elastic plunger body, wherein the cover plate is connected with the elastic plunger body; a driving disc is arranged inside the inner cavity of the elastic plunger body; four support arms are arranged on the driving disc at equal interval peripherally; the top pressing parts of the support arms longitudinally encircle the circumferential wall inside the elastic plunger body and are connected with the circumferential wall inside the elastic plunger body in a propping manner; positioning guide pins fixed on the cover plate are connected with arc-shaped guide holes in the support arms and the driving disc in a penetration manner; a rotating handle passes through a locking hole and is inserted into a shaft hole of a rotating shaft of the driving disc; the driving disc can be driven to rotate by rotating the rotating handle, then the support arms are radially expanded and withdrawn, at the same time, the diameter of the elastic plunger body is also correspondingly increased or decreased, and rotation of the driving disc can be locked after the locking disc moves downwards to be meshed with the locking hole. The bottle stopper can be radially unequally expanded and withdrawn, and according to bottle bodies of different opening diameters, the bottle stopper can be adjusted to be applicable to the bottle openings, and thus the bottle openings can be sealed. |
